diff --git a/.bingo/Variables.mk b/.bingo/Variables.mk index 9c12d9e..06252f2 100644 --- a/.bingo/Variables.mk +++ b/.bingo/Variables.mk @@ -1,4 +1,4 @@ -# Auto generated binary variables helper managed by https://github.com/bwplotka/bingo v0.8. DO NOT EDIT. +# Auto generated binary variables helper managed by https://github.com/bwplotka/bingo v0.9. DO NOT EDIT. # All tools are designed to be build inside $GOBIN. BINGO_DIR := $(dir $(lastword $(MAKEFILE_LIST))) GOPATH ?= $(shell go env GOPATH) @@ -7,16 +7,22 @@ GO ?= $(shell which go) # Below generated variables ensure that every time a tool under each variable is invoked, the correct version # will be used; reinstalling only if needed. -# For example for goimports variable: +# For example for buf variable: # # In your main Makefile (for non array binaries): # #include .bingo/Variables.mk # Assuming -dir was set to .bingo . # -#command: $(GOIMPORTS) -# @echo "Running goimports" -# @$(GOIMPORTS) +#command: $(BUF) +# @echo "Running buf" +# @$(BUF) # +BUF := $(GOBIN)/buf-v1.39.0 +$(BUF): $(BINGO_DIR)/buf.mod + @# Install binary/ries using Go 1.14+ build command. This is using bwplotka/bingo-controlled, separate go module with pinned dependencies. + @echo "(re)installing $(GOBIN)/buf-v1.39.0" + @cd $(BINGO_DIR) && GOWORK=off $(GO) build -mod=mod -modfile=buf.mod -o=$(GOBIN)/buf-v1.39.0 "github.com/bufbuild/buf/cmd/buf" + GOIMPORTS := $(GOBIN)/goimports-v0.9.3 $(GOIMPORTS): $(BINGO_DIR)/goimports.mod @# Install binary/ries using Go 1.14+ build command. This is using bwplotka/bingo-controlled, separate go module with pinned dependencies. diff --git a/.bingo/buf.mod b/.bingo/buf.mod new file mode 100644 index 0000000..d533ffe --- /dev/null +++ b/.bingo/buf.mod @@ -0,0 +1,5 @@ +module _ // Auto generated by https://github.com/bwplotka/bingo. DO NOT EDIT + +go 1.22.6 + +require github.com/bufbuild/buf v1.39.0 // cmd/buf diff --git a/.bingo/buf.sum b/.bingo/buf.sum new file mode 100644 index 0000000..9fb95b6 --- /dev/null +++ b/.bingo/buf.sum @@ -0,0 +1,336 @@ +buf.build/gen/go/bufbuild/protovalidate/protocolbuffers/go v1.34.2-20240717164558-a6c49f84cc0f.2 h1:SZRVx928rbYZ6hEKUIN+vtGDkl7uotABRWGY4OAg5gM= +buf.build/gen/go/bufbuild/protovalidate/protocolbuffers/go v1.34.2-20240717164558-a6c49f84cc0f.2/go.mod h1:ylS4c28ACSI59oJrOdW4pHS4n0Hw4TgSPHn8rpHl4Yw= +buf.build/gen/go/bufbuild/registry/connectrpc/go v1.16.2-20240821192916-45ba72cdd479.1 h1:QaJ6UkpvlGo4dBXR41vLRfPiKungbg7brjmbBC/k6Ig= +buf.build/gen/go/bufbuild/registry/connectrpc/go v1.16.2-20240821192916-45ba72cdd479.1/go.mod h1:oQsMFNU3YzxxjRS6O68UkcF/A+pXdXqQNcUfQEBTWcw= +buf.build/gen/go/bufbuild/registry/protocolbuffers/go v1.34.2-20240821192916-45ba72cdd479.2 h1:C3CTZTucEUm7i0O2tAM8GSlg23GnQYcljX1b1Jcpsro= +buf.build/gen/go/bufbuild/registry/protocolbuffers/go 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h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= +honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= diff --git a/.bingo/variables.env b/.bingo/variables.env index 7d2f9f5..ffff895 100644 --- a/.bingo/variables.env +++ b/.bingo/variables.env @@ -1,4 +1,4 @@ -# Auto generated binary variables helper managed by https://github.com/bwplotka/bingo v0.8. DO NOT EDIT. +# Auto generated binary variables helper managed by https://github.com/bwplotka/bingo v0.9. DO NOT EDIT. # All tools are designed to be build inside $GOBIN. # Those variables will work only until 'bingo get' was invoked, or if tools were installed via Makefile's Variables.mk. GOBIN=${GOBIN:=$(go env GOBIN)} @@ -8,5 +8,7 @@ if [ -z "$GOBIN" ]; then fi +BUF="${GOBIN}/buf-v1.39.0" + GOIMPORTS="${GOBIN}/goimports-v0.9.3" diff --git a/Makefile b/Makefile index 2af8c52..848b478 100644 --- a/Makefile +++ b/Makefile @@ -48,5 +48,15 @@ generate-go-collector-test-files: go mod tidy .PHONY: fmt -fmt: common-format +fmt: common-format $(GOIMPORTS) $(GOIMPORTS) -local github.com/prometheus/client_golang -w . + +.PHONY: proto +proto: ## Regenerate Go from remote write proto. +proto: $(BUF) + @echo ">> regenerating Prometheus Remote Write proto" + @cd api/prometheus/v1/genproto && $(BUF) generate + @cd api/prometheus/v1 && find genproto/ -type f -exec sed -i '' 's/protohelpers "github.com\/planetscale\/vtprotobuf\/protohelpers"/protohelpers "github.com\/prometheus\/client_golang\/internal\/github.com\/planetscale\/vtprotobuf\/protohelpers"/g' {} \; + # For some reasons buf generates this unused import, kill it manually for now and reformat. + @cd api/prometheus/v1 && find genproto/ -type f -exec sed -i '' 's/_ "github.com\/gogo\/protobuf\/gogoproto"//g' {} \; + @cd api/prometheus/v1 && go fmt ./genproto/... diff --git a/api/client.go b/api/client.go index afcf122..ddbfea0 100644 --- a/api/client.go +++ b/api/client.go @@ -18,6 +18,7 @@ import ( "bytes" "context" "errors" + "io" "net" "net/http" "net/url" @@ -133,7 +134,8 @@ func (c *httpClient) Do(ctx context.Context, req *http.Request) (*http.Response, resp, err := c.client.Do(req) defer func() { if resp != nil { - resp.Body.Close() + _, _ = io.Copy(io.Discard, resp.Body) + _ = resp.Body.Close() } }() @@ -145,6 +147,7 @@ func (c *httpClient) Do(ctx context.Context, req *http.Request) (*http.Response, done := make(chan struct{}) go func() { var buf bytes.Buffer + // TODO(bwplotka): Add LimitReader for too long err messages (e.g. limit by 1KB) _, err = buf.ReadFrom(resp.Body) body = buf.Bytes() close(done) diff --git a/api/prometheus/v1/remote/genproto/buf.gen.yaml b/api/prometheus/v1/remote/genproto/buf.gen.yaml new file mode 100644 index 0000000..63e34a0 --- /dev/null +++ b/api/prometheus/v1/remote/genproto/buf.gen.yaml @@ -0,0 +1,21 @@ +# buf.gen.yaml +version: v2 + +plugins: +- remote: buf.build/protocolbuffers/go:v1.31.0 + out: . + opt: + - Mio/prometheus/write/v2/types.proto=./v2 + +# vtproto for efficiency utilities like pooling etc. +# https://buf.build/community/planetscale-vtprotobuf?version=v0.6.0 +- remote: buf.build/community/planetscale-vtprotobuf:v0.6.0 + out: . + opt: + - Mio/prometheus/write/v2/types.proto=./v2 + - features=marshal+unmarshal+size + +inputs: +- module: buf.build/prometheus/prometheus:5b212ab78fb7460e831cf7ff2d83e385 + types: + - "io.prometheus.write.v2.Request" diff --git a/api/prometheus/v1/remote/genproto/v2/symbols.go b/api/prometheus/v1/remote/genproto/v2/symbols.go new file mode 100644 index 0000000..5e74946 --- /dev/null +++ b/api/prometheus/v1/remote/genproto/v2/symbols.go @@ -0,0 +1,97 @@ +// Copyright (c) Bartłomiej Płotka @bwplotka +// Licensed under the Apache License 2.0. + +// Copyright 2024 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// https://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Copyright 2024 Prometheus Team +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package writev2 + +// SymbolsTable implements table for easy symbol use. +type SymbolsTable struct { + strings []string + symbolsMap map[string]uint32 +} + +// NewSymbolTable returns a symbol table. +func NewSymbolTable() SymbolsTable { + return SymbolsTable{ + // Empty string is required as a first element. + symbolsMap: map[string]uint32{"": 0}, + strings: []string{""}, + } +} + +// Symbolize adds (if not added before) a string to the symbols table, +// while returning its reference number. +func (t *SymbolsTable) Symbolize(str string) uint32 { + if ref, ok := t.symbolsMap[str]; ok { + return ref + } + ref := uint32(len(t.strings)) + t.strings = append(t.strings, str) + t.symbolsMap[str] = ref + return ref +} + +// SymbolizeLabels symbolize Prometheus labels. +func (t *SymbolsTable) SymbolizeLabels(lbls []string, buf []uint32) []uint32 { + result := buf[:0] + for i := 0; i < len(lbls); i += 2 { + off := t.Symbolize(lbls[i]) + result = append(result, off) + off = t.Symbolize(lbls[i+1]) + result = append(result, off) + } + return result +} + +// Symbols returns computes symbols table to put in e.g. Request.Symbols. +// As per spec, order does not matter. +func (t *SymbolsTable) Symbols() []string { + return t.strings +} + +// Reset clears symbols table. +func (t *SymbolsTable) Reset() { + // NOTE: Make sure to keep empty symbol. + t.strings = t.strings[:1] + for k := range t.symbolsMap { + if k == "" { + continue + } + delete(t.symbolsMap, k) + } +} + +// DesymbolizeLabels decodes label references, with given symbols to labels. +func DesymbolizeLabels(labelRefs []uint32, symbols, buf []string) []string { + result := buf[:0] + for i := 0; i < len(labelRefs); i += 2 { + result = append(result, symbols[labelRefs[i]], symbols[labelRefs[i+1]]) + } + return result +} diff --git a/api/prometheus/v1/remote/genproto/v2/symbols_test.go b/api/prometheus/v1/remote/genproto/v2/symbols_test.go new file mode 100644 index 0000000..161cdbd --- /dev/null +++ b/api/prometheus/v1/remote/genproto/v2/symbols_test.go @@ -0,0 +1,80 @@ +// Copyright (c) Bartłomiej Płotka @bwplotka +// Licensed under the Apache License 2.0. + +// Copyright 2024 Google LLC +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// https://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Copyright 2024 Prometheus Team +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package writev2 + +import ( + "testing" + + "github.com/google/go-cmp/cmp" +) + +func requireEqual(t testing.TB, expected, got any) { + if diff := cmp.Diff(expected, got); diff != "" { + t.Fatal(diff) + } +} + +func TestSymbolsTable(t *testing.T) { + s := NewSymbolTable() + requireEqual(t, []string{""}, s.Symbols()) + requireEqual(t, uint32(0), s.Symbolize("")) + requireEqual(t, []string{""}, s.Symbols()) + + requireEqual(t, uint32(1), s.Symbolize("abc")) + requireEqual(t, []string{"", "abc"}, s.Symbols()) + + requireEqual(t, uint32(2), s.Symbolize("__name__")) + requireEqual(t, []string{"", "abc", "__name__"}, s.Symbols()) + + requireEqual(t, uint32(3), s.Symbolize("foo")) + requireEqual(t, []string{"", "abc", "__name__", "foo"}, s.Symbols()) + + s.Reset() + requireEqual(t, []string{""}, s.Symbols()) + requireEqual(t, uint32(0), s.Symbolize("")) + + requireEqual(t, uint32(1), s.Symbolize("__name__")) + requireEqual(t, []string{"", "__name__"}, s.Symbols()) + + requireEqual(t, uint32(2), s.Symbolize("abc")) + requireEqual(t, []string{"", "__name__", "abc"}, s.Symbols()) + + ls := []string{"__name__", "qwer", "zxcv", "1234"} + encoded := s.SymbolizeLabels(ls, nil) + requireEqual(t, []uint32{1, 3, 4, 5}, encoded) + decoded := DesymbolizeLabels(encoded, s.Symbols(), nil) + requireEqual(t, ls, decoded) + + // Different buf. + ls = []string{"__name__", "qwer", "zxcv2222", "1234"} + encoded = s.SymbolizeLabels(ls, []uint32{1, 3, 4, 5}) + requireEqual(t, []uint32{1, 3, 6, 5}, encoded) +} diff --git a/api/prometheus/v1/remote/genproto/v2/types.pb.go b/api/prometheus/v1/remote/genproto/v2/types.pb.go new file mode 100644 index 0000000..767a555 --- /dev/null +++ b/api/prometheus/v1/remote/genproto/v2/types.pb.go @@ -0,0 +1,1183 @@ +// Copyright 2024 Prometheus Team +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// NOTE: This file is also available on https://buf.build/prometheus/prometheus/docs/main:io.prometheus.write.v2 + +// Code generated by protoc-gen-go. DO NOT EDIT. +// versions: +// protoc-gen-go v1.31.0 +// protoc (unknown) +// source: io/prometheus/write/v2/types.proto + +package writev2 + +import ( + reflect "reflect" + sync "sync" + + protoreflect "google.golang.org/protobuf/reflect/protoreflect" + protoimpl "google.golang.org/protobuf/runtime/protoimpl" +) + +const ( + // Verify that this generated code is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion) + // Verify that runtime/protoimpl is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20) +) + +type Metadata_MetricType int32 + +const ( + Metadata_METRIC_TYPE_UNSPECIFIED Metadata_MetricType = 0 + Metadata_METRIC_TYPE_COUNTER Metadata_MetricType = 1 + Metadata_METRIC_TYPE_GAUGE Metadata_MetricType = 2 + Metadata_METRIC_TYPE_HISTOGRAM Metadata_MetricType = 3 + Metadata_METRIC_TYPE_GAUGEHISTOGRAM Metadata_MetricType = 4 + Metadata_METRIC_TYPE_SUMMARY Metadata_MetricType = 5 + Metadata_METRIC_TYPE_INFO Metadata_MetricType = 6 + Metadata_METRIC_TYPE_STATESET Metadata_MetricType = 7 +) + +// Enum value maps for Metadata_MetricType. +var ( + Metadata_MetricType_name = map[int32]string{ + 0: "METRIC_TYPE_UNSPECIFIED", + 1: "METRIC_TYPE_COUNTER", + 2: "METRIC_TYPE_GAUGE", + 3: "METRIC_TYPE_HISTOGRAM", + 4: "METRIC_TYPE_GAUGEHISTOGRAM", + 5: "METRIC_TYPE_SUMMARY", + 6: "METRIC_TYPE_INFO", + 7: "METRIC_TYPE_STATESET", + } + Metadata_MetricType_value = map[string]int32{ + "METRIC_TYPE_UNSPECIFIED": 0, + "METRIC_TYPE_COUNTER": 1, + "METRIC_TYPE_GAUGE": 2, + "METRIC_TYPE_HISTOGRAM": 3, + "METRIC_TYPE_GAUGEHISTOGRAM": 4, + "METRIC_TYPE_SUMMARY": 5, + "METRIC_TYPE_INFO": 6, + "METRIC_TYPE_STATESET": 7, + } +) + +func (x Metadata_MetricType) Enum() *Metadata_MetricType { + p := new(Metadata_MetricType) + *p = x + return p +} + +func (x Metadata_MetricType) String() string { + return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x)) +} + +func (Metadata_MetricType) Descriptor() protoreflect.EnumDescriptor { + return file_io_prometheus_write_v2_types_proto_enumTypes[0].Descriptor() +} + +func (Metadata_MetricType) Type() protoreflect.EnumType { + return &file_io_prometheus_write_v2_types_proto_enumTypes[0] +} + +func (x Metadata_MetricType) Number() protoreflect.EnumNumber { + return protoreflect.EnumNumber(x) +} + +// Deprecated: Use Metadata_MetricType.Descriptor instead. +func (Metadata_MetricType) EnumDescriptor() ([]byte, []int) { + return file_io_prometheus_write_v2_types_proto_rawDescGZIP(), []int{4, 0} +} + +type Histogram_ResetHint int32 + +const ( + Histogram_RESET_HINT_UNSPECIFIED Histogram_ResetHint = 0 // Need to test for a counter reset explicitly. + Histogram_RESET_HINT_YES Histogram_ResetHint = 1 // This is the 1st histogram after a counter reset. + Histogram_RESET_HINT_NO Histogram_ResetHint = 2 // There was no counter reset between this and the previous Histogram. + Histogram_RESET_HINT_GAUGE Histogram_ResetHint = 3 // This is a gauge histogram where counter resets don't happen. +) + +// Enum value maps for Histogram_ResetHint. +var ( + Histogram_ResetHint_name = map[int32]string{ + 0: "RESET_HINT_UNSPECIFIED", + 1: "RESET_HINT_YES", + 2: "RESET_HINT_NO", + 3: "RESET_HINT_GAUGE", + } + Histogram_ResetHint_value = map[string]int32{ + "RESET_HINT_UNSPECIFIED": 0, + "RESET_HINT_YES": 1, + "RESET_HINT_NO": 2, + "RESET_HINT_GAUGE": 3, + } +) + +func (x Histogram_ResetHint) Enum() *Histogram_ResetHint { + p := new(Histogram_ResetHint) + *p = x + return p +} + +func (x Histogram_ResetHint) String() string { + return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x)) +} + +func (Histogram_ResetHint) Descriptor() protoreflect.EnumDescriptor { + return file_io_prometheus_write_v2_types_proto_enumTypes[1].Descriptor() +} + +func (Histogram_ResetHint) Type() protoreflect.EnumType { + return &file_io_prometheus_write_v2_types_proto_enumTypes[1] +} + +func (x Histogram_ResetHint) Number() protoreflect.EnumNumber { + return protoreflect.EnumNumber(x) +} + +// Deprecated: Use Histogram_ResetHint.Descriptor instead. +func (Histogram_ResetHint) EnumDescriptor() ([]byte, []int) { + return file_io_prometheus_write_v2_types_proto_rawDescGZIP(), []int{5, 0} +} + +// Request represents a request to write the given timeseries to a remote destination. +// This message was introduced in the Remote Write 2.0 specification: +// https://prometheus.io/docs/concepts/remote_write_spec_2_0/ +// +// The canonical Content-Type request header value for this message is +// "application/x-protobuf;proto=io.prometheus.write.v2.Request" +// +// NOTE: gogoproto options might change in future for this file, they +// are not part of the spec proto (they only modify the generated Go code, not +// the serialized message). See: https://github.com/prometheus/prometheus/issues/11908 +type Request struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // symbols contains a de-duplicated array of string elements used for various + // items in a Request message, like labels and metadata items. For the sender's convenience + // around empty values for optional fields like unit_ref, symbols array MUST start with + // empty string. + // + // To decode each of the symbolized strings, referenced, by "ref(s)" suffix, you + // need to lookup the actual string by index from symbols array. The order of + // strings is up to the sender. The receiver should not assume any particular encoding. + Symbols []string `protobuf:"bytes,4,rep,name=symbols,proto3" json:"symbols,omitempty"` + // timeseries represents an array of distinct series with 0 or more samples. + Timeseries []*TimeSeries `protobuf:"bytes,5,rep,name=timeseries,proto3" json:"timeseries,omitempty"` +} + +func (x *Request) Reset() { + *x = Request{} + if protoimpl.UnsafeEnabled { + mi := &file_io_prometheus_write_v2_types_proto_msgTypes[0] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Request) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Request) ProtoMessage() {} + +func (x *Request) ProtoReflect() protoreflect.Message { + mi := &file_io_prometheus_write_v2_types_proto_msgTypes[0] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Request.ProtoReflect.Descriptor instead. +func (*Request) Descriptor() ([]byte, []int) { + return file_io_prometheus_write_v2_types_proto_rawDescGZIP(), []int{0} +} + +func (x *Request) GetSymbols() []string { + if x != nil { + return x.Symbols + } + return nil +} + +func (x *Request) GetTimeseries() []*TimeSeries { + if x != nil { + return x.Timeseries + } + return nil +} + +// TimeSeries represents a single series. +type TimeSeries struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // labels_refs is a list of label name-value pair references, encoded + // as indices to the Request.symbols array. This list's length is always + // a multiple of two, and the underlying labels should be sorted lexicographically. + // + // Note that there might be multiple TimeSeries objects in the same + // Requests with the same labels e.g. for different exemplars, metadata + // or created timestamp. + LabelsRefs []uint32 `protobuf:"varint,1,rep,packed,name=labels_refs,json=labelsRefs,proto3" json:"labels_refs,omitempty"` + // Timeseries messages can either specify samples or (native) histogram samples + // (histogram field), but not both. For a typical sender (real-time metric + // streaming), in healthy cases, there will be only one sample or histogram. + // + // Samples and histograms are sorted by timestamp (older first). + Samples []*Sample `protobuf:"bytes,2,rep,name=samples,proto3" json:"samples,omitempty"` + Histograms []*Histogram `protobuf:"bytes,3,rep,name=histograms,proto3" json:"histograms,omitempty"` + // exemplars represents an optional set of exemplars attached to this series' samples. + Exemplars []*Exemplar `protobuf:"bytes,4,rep,name=exemplars,proto3" json:"exemplars,omitempty"` + // metadata represents the metadata associated with the given series' samples. + Metadata *Metadata `protobuf:"bytes,5,opt,name=metadata,proto3" json:"metadata,omitempty"` + // created_timestamp represents an optional created timestamp associated with + // this series' samples in ms format, typically for counter or histogram type + // metrics. Created timestamp represents the time when the counter started + // counting (sometimes referred to as start timestamp), which can increase + // the accuracy of query results. + // + // Note that some receivers might require this and in return fail to + // ingest such samples within the Request. + // + // For Go, see github.com/prometheus/prometheus/model/timestamp/timestamp.go + // for conversion from/to time.Time to Prometheus timestamp. + // + // Note that the "optional" keyword is omitted due to + // https://cloud.google.com/apis/design/design_patterns.md#optional_primitive_fields + // Zero value means value not set. If you need to use exactly zero value for + // the timestamp, use 1 millisecond before or after. + CreatedTimestamp int64 `protobuf:"varint,6,opt,name=created_timestamp,json=createdTimestamp,proto3" json:"created_timestamp,omitempty"` +} + +func (x *TimeSeries) Reset() { + *x = TimeSeries{} + if protoimpl.UnsafeEnabled { + mi := &file_io_prometheus_write_v2_types_proto_msgTypes[1] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *TimeSeries) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*TimeSeries) ProtoMessage() {} + +func (x *TimeSeries) ProtoReflect() protoreflect.Message { + mi := &file_io_prometheus_write_v2_types_proto_msgTypes[1] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use TimeSeries.ProtoReflect.Descriptor instead. +func (*TimeSeries) Descriptor() ([]byte, []int) { + return file_io_prometheus_write_v2_types_proto_rawDescGZIP(), []int{1} +} + +func (x *TimeSeries) GetLabelsRefs() []uint32 { + if x != nil { + return x.LabelsRefs + } + return nil +} + +func (x *TimeSeries) GetSamples() []*Sample { + if x != nil { + return x.Samples + } + return nil +} + +func (x *TimeSeries) GetHistograms() []*Histogram { + if x != nil { + return x.Histograms + } + return nil +} + +func (x *TimeSeries) GetExemplars() []*Exemplar { + if x != nil { + return x.Exemplars + } + return nil +} + +func (x *TimeSeries) GetMetadata() *Metadata { + if x != nil { + return x.Metadata + } + return nil +} + +func (x *TimeSeries) GetCreatedTimestamp() int64 { + if x != nil { + return x.CreatedTimestamp + } + return 0 +} + +// Exemplar is an additional information attached to some series' samples. +// It is typically used to attach an example trace or request ID associated with +// the metric changes. +type Exemplar struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // labels_refs is an optional list of label name-value pair references, encoded + // as indices to the Request.symbols array. This list's len is always + // a multiple of 2, and the underlying labels should be sorted lexicographically. + // If the exemplar references a trace it should use the `trace_id` label name, as a best practice. + LabelsRefs []uint32 `protobuf:"varint,1,rep,packed,name=labels_refs,json=labelsRefs,proto3" json:"labels_refs,omitempty"` + // value represents an exact example value. This can be useful when the exemplar + // is attached to a histogram, which only gives an estimated value through buckets. + Value float64 `protobuf:"fixed64,2,opt,name=value,proto3" json:"value,omitempty"` + // timestamp represents the timestamp of the exemplar in ms. + // + // For Go, see github.com/prometheus/prometheus/model/timestamp/timestamp.go + // for conversion from/to time.Time to Prometheus timestamp. + Timestamp int64 `protobuf:"varint,3,opt,name=timestamp,proto3" json:"timestamp,omitempty"` +} + +func (x *Exemplar) Reset() { + *x = Exemplar{} + if protoimpl.UnsafeEnabled { + mi := &file_io_prometheus_write_v2_types_proto_msgTypes[2] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Exemplar) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Exemplar) ProtoMessage() {} + +func (x *Exemplar) ProtoReflect() protoreflect.Message { + mi := &file_io_prometheus_write_v2_types_proto_msgTypes[2] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Exemplar.ProtoReflect.Descriptor instead. +func (*Exemplar) Descriptor() ([]byte, []int) { + return file_io_prometheus_write_v2_types_proto_rawDescGZIP(), []int{2} +} + +func (x *Exemplar) GetLabelsRefs() []uint32 { + if x != nil { + return x.LabelsRefs + } + return nil +} + +func (x *Exemplar) GetValue() float64 { + if x != nil { + return x.Value + } + return 0 +} + +func (x *Exemplar) GetTimestamp() int64 { + if x != nil { + return x.Timestamp + } + return 0 +} + +// Sample represents series sample. +type Sample struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // value of the sample. + Value float64 `protobuf:"fixed64,1,opt,name=value,proto3" json:"value,omitempty"` + // timestamp represents timestamp of the sample in ms. + // + // For Go, see github.com/prometheus/prometheus/model/timestamp/timestamp.go + // for conversion from/to time.Time to Prometheus timestamp. + Timestamp int64 `protobuf:"varint,2,opt,name=timestamp,proto3" json:"timestamp,omitempty"` +} + +func (x *Sample) Reset() { + *x = Sample{} + if protoimpl.UnsafeEnabled { + mi := &file_io_prometheus_write_v2_types_proto_msgTypes[3] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Sample) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Sample) ProtoMessage() {} + +func (x *Sample) ProtoReflect() protoreflect.Message { + mi := &file_io_prometheus_write_v2_types_proto_msgTypes[3] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Sample.ProtoReflect.Descriptor instead. +func (*Sample) Descriptor() ([]byte, []int) { + return file_io_prometheus_write_v2_types_proto_rawDescGZIP(), []int{3} +} + +func (x *Sample) GetValue() float64 { + if x != nil { + return x.Value + } + return 0 +} + +func (x *Sample) GetTimestamp() int64 { + if x != nil { + return x.Timestamp + } + return 0 +} + +// Metadata represents the metadata associated with the given series' samples. +type Metadata struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Type Metadata_MetricType `protobuf:"varint,1,opt,name=type,proto3,enum=io.prometheus.write.v2.Metadata_MetricType" json:"type,omitempty"` + // help_ref is a reference to the Request.symbols array representing help + // text for the metric. Help is optional, reference should point to an empty string in + // such a case. + HelpRef uint32 `protobuf:"varint,3,opt,name=help_ref,json=helpRef,proto3" json:"help_ref,omitempty"` + // unit_ref is a reference to the Request.symbols array representing a unit + // for the metric. Unit is optional, reference should point to an empty string in + // such a case. + UnitRef uint32 `protobuf:"varint,4,opt,name=unit_ref,json=unitRef,proto3" json:"unit_ref,omitempty"` +} + +func (x *Metadata) Reset() { + *x = Metadata{} + if protoimpl.UnsafeEnabled { + mi := &file_io_prometheus_write_v2_types_proto_msgTypes[4] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Metadata) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Metadata) ProtoMessage() {} + +func (x *Metadata) ProtoReflect() protoreflect.Message { + mi := &file_io_prometheus_write_v2_types_proto_msgTypes[4] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Metadata.ProtoReflect.Descriptor instead. +func (*Metadata) Descriptor() ([]byte, []int) { + return file_io_prometheus_write_v2_types_proto_rawDescGZIP(), []int{4} +} + +func (x *Metadata) GetType() Metadata_MetricType { + if x != nil { + return x.Type + } + return Metadata_METRIC_TYPE_UNSPECIFIED +} + +func (x *Metadata) GetHelpRef() uint32 { + if x != nil { + return x.HelpRef + } + return 0 +} + +func (x *Metadata) GetUnitRef() uint32 { + if x != nil { + return x.UnitRef + } + return 0 +} + +// A native histogram, also known as a sparse histogram. +// Original design doc: +// https://docs.google.com/document/d/1cLNv3aufPZb3fNfaJgdaRBZsInZKKIHo9E6HinJVbpM/edit +// The appendix of this design doc also explains the concept of float +// histograms. This Histogram message can represent both, the usual +// integer histogram as well as a float histogram. +type Histogram struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + // Types that are assignable to Count: + // + // *Histogram_CountInt + // *Histogram_CountFloat + Count isHistogram_Count `protobuf_oneof:"count"` + Sum float64 `protobuf:"fixed64,3,opt,name=sum,proto3" json:"sum,omitempty"` // Sum of observations in the histogram. + // The schema defines the bucket schema. Currently, valid numbers + // are -53 and numbers in range of -4 <= n <= 8. More valid numbers might be + // added in future for new bucketing layouts. + // + // The schema equal to -53 means custom buckets. See + // custom_values field description for more details. + // + // Values between -4 and 8 represent base-2 bucket schema, where 1 + // is a bucket boundary in each case, and then each power of two is + // divided into 2^n (n is schema value) logarithmic buckets. Or in other words, + // each bucket boundary is the previous boundary times 2^(2^-n). + Schema int32 `protobuf:"zigzag32,4,opt,name=schema,proto3" json:"schema,omitempty"` + ZeroThreshold float64 `protobuf:"fixed64,5,opt,name=zero_threshold,json=zeroThreshold,proto3" json:"zero_threshold,omitempty"` // Breadth of the zero bucket. + // Types that are assignable to ZeroCount: + // + // *Histogram_ZeroCountInt + // *Histogram_ZeroCountFloat + ZeroCount isHistogram_ZeroCount `protobuf_oneof:"zero_count"` + // Negative Buckets. + NegativeSpans []*BucketSpan `protobuf:"bytes,8,rep,name=negative_spans,json=negativeSpans,proto3" json:"negative_spans,omitempty"` + // Use either "negative_deltas" or "negative_counts", the former for + // regular histograms with integer counts, the latter for + // float histograms. + NegativeDeltas []int64 `protobuf:"zigzag64,9,rep,packed,name=negative_deltas,json=negativeDeltas,proto3" json:"negative_deltas,omitempty"` // Count delta of each bucket compared to previous one (or to zero for 1st bucket). + NegativeCounts []float64 `protobuf:"fixed64,10,rep,packed,name=negative_counts,json=negativeCounts,proto3" json:"negative_counts,omitempty"` // Absolute count of each bucket. + // Positive Buckets. + // + // In case of custom buckets (-53 schema value) the positive buckets are interpreted as follows: + // * The span offset+length points to an the index of the custom_values array + // or +Inf if pointing to the len of the array. + // * The counts and deltas have the same meaning as for exponential histograms. + PositiveSpans []*BucketSpan `protobuf:"bytes,11,rep,name=positive_spans,json=positiveSpans,proto3" json:"positive_spans,omitempty"` + // Use either "positive_deltas" or "positive_counts", the former for + // regular histograms with integer counts, the latter for + // float histograms. + PositiveDeltas []int64 `protobuf:"zigzag64,12,rep,packed,name=positive_deltas,json=positiveDeltas,proto3" json:"positive_deltas,omitempty"` // Count delta of each bucket compared to previous one (or to zero for 1st bucket). + PositiveCounts []float64 `protobuf:"fixed64,13,rep,packed,name=positive_counts,json=positiveCounts,proto3" json:"positive_counts,omitempty"` // Absolute count of each bucket. + ResetHint Histogram_ResetHint `protobuf:"varint,14,opt,name=reset_hint,json=resetHint,proto3,enum=io.prometheus.write.v2.Histogram_ResetHint" json:"reset_hint,omitempty"` + // timestamp represents timestamp of the sample in ms. + // + // For Go, see github.com/prometheus/prometheus/model/timestamp/timestamp.go + // for conversion from/to time.Time to Prometheus timestamp. + Timestamp int64 `protobuf:"varint,15,opt,name=timestamp,proto3" json:"timestamp,omitempty"` + // custom_values is an additional field used by non-exponential bucketing layouts. + // + // For custom buckets (-53 schema value) custom_values specify monotonically + // increasing upper inclusive boundaries for the bucket counts with arbitrary + // widths for this histogram. In other words, custom_values represents custom, + // explicit bucketing that could have been converted from the classic histograms. + // + // Those bounds are then referenced by spans in positive_spans with corresponding positive + // counts of deltas (refer to positive_spans for more details). This way we can + // have encode sparse histograms with custom bucketing (many buckets are often + // not used). + // + // Note that for custom bounds, even negative observations are placed in the positive + // counts to simplify the implementation and avoid ambiguity of where to place + // an underflow bucket, e.g. (-2, 1]. Therefore negative buckets and + // the zero bucket are unused, if the schema indicates custom bucketing. + // + // For each upper boundary the previous boundary represent the lower exclusive + // boundary for that bucket. The first element is the upper inclusive boundary + // for the first bucket, which implicitly has a lower inclusive bound of -Inf. + // This is similar to "le" label semantics on classic histograms. You may add a + // bucket with an upper bound of 0 to make sure that you really have no negative + // observations, but in practice, native histogram rendering will show both with + // or without first upper boundary 0 and no negative counts as the same case. + // + // The last element is not only the upper inclusive bound of the last regular + // bucket, but implicitly the lower exclusive bound of the +Inf bucket. + CustomValues []float64 `protobuf:"fixed64,16,rep,packed,name=custom_values,json=customValues,proto3" json:"custom_values,omitempty"` +} + +func (x *Histogram) Reset() { + *x = Histogram{} + if protoimpl.UnsafeEnabled { + mi := &file_io_prometheus_write_v2_types_proto_msgTypes[5] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *Histogram) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*Histogram) ProtoMessage() {} + +func (x *Histogram) ProtoReflect() protoreflect.Message { + mi := &file_io_prometheus_write_v2_types_proto_msgTypes[5] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use Histogram.ProtoReflect.Descriptor instead. +func (*Histogram) Descriptor() ([]byte, []int) { + return file_io_prometheus_write_v2_types_proto_rawDescGZIP(), []int{5} +} + +func (m *Histogram) GetCount() isHistogram_Count { + if m != nil { + return m.Count + } + return nil +} + +func (x *Histogram) GetCountInt() uint64 { + if x, ok := x.GetCount().(*Histogram_CountInt); ok { + return x.CountInt + } + return 0 +} + +func (x *Histogram) GetCountFloat() float64 { + if x, ok := x.GetCount().(*Histogram_CountFloat); ok { + return x.CountFloat + } + return 0 +} + +func (x *Histogram) GetSum() float64 { + if x != nil { + return x.Sum + } + return 0 +} + +func (x *Histogram) GetSchema() int32 { + if x != nil { + return x.Schema + } + return 0 +} + +func (x *Histogram) GetZeroThreshold() float64 { + if x != nil { + return x.ZeroThreshold + } + return 0 +} + +func (m *Histogram) GetZeroCount() isHistogram_ZeroCount { + if m != nil { + return m.ZeroCount + } + return nil +} + +func (x *Histogram) GetZeroCountInt() uint64 { + if x, ok := x.GetZeroCount().(*Histogram_ZeroCountInt); ok { + return x.ZeroCountInt + } + return 0 +} + +func (x *Histogram) GetZeroCountFloat() float64 { + if x, ok := x.GetZeroCount().(*Histogram_ZeroCountFloat); ok { + return x.ZeroCountFloat + } + return 0 +} + +func (x *Histogram) GetNegativeSpans() []*BucketSpan { + if x != nil { + return x.NegativeSpans + } + return nil +} + +func (x *Histogram) GetNegativeDeltas() []int64 { + if x != nil { + return x.NegativeDeltas + } + return nil +} + +func (x *Histogram) GetNegativeCounts() []float64 { + if x != nil { + return x.NegativeCounts + } + return nil +} + +func (x *Histogram) GetPositiveSpans() []*BucketSpan { + if x != nil { + return x.PositiveSpans + } + return nil +} + +func (x *Histogram) GetPositiveDeltas() []int64 { + if x != nil { + return x.PositiveDeltas + } + return nil +} + +func (x *Histogram) GetPositiveCounts() []float64 { + if x != nil { + return x.PositiveCounts + } + return nil +} + +func (x *Histogram) GetResetHint() Histogram_ResetHint { + if x != nil { + return x.ResetHint + } + return Histogram_RESET_HINT_UNSPECIFIED +} + +func (x *Histogram) GetTimestamp() int64 { + if x != nil { + return x.Timestamp + } + return 0 +} + +func (x *Histogram) GetCustomValues() []float64 { + if x != nil { + return x.CustomValues + } + return nil +} + +type isHistogram_Count interface { + isHistogram_Count() +} + +type Histogram_CountInt struct { + CountInt uint64 `protobuf:"varint,1,opt,name=count_int,json=countInt,proto3,oneof"` +} + +type Histogram_CountFloat struct { + CountFloat float64 `protobuf:"fixed64,2,opt,name=count_float,json=countFloat,proto3,oneof"` +} + +func (*Histogram_CountInt) isHistogram_Count() {} + +func (*Histogram_CountFloat) isHistogram_Count() {} + +type isHistogram_ZeroCount interface { + isHistogram_ZeroCount() +} + +type Histogram_ZeroCountInt struct { + ZeroCountInt uint64 `protobuf:"varint,6,opt,name=zero_count_int,json=zeroCountInt,proto3,oneof"` +} + +type Histogram_ZeroCountFloat struct { + ZeroCountFloat float64 `protobuf:"fixed64,7,opt,name=zero_count_float,json=zeroCountFloat,proto3,oneof"` +} + +func (*Histogram_ZeroCountInt) isHistogram_ZeroCount() {} + +func (*Histogram_ZeroCountFloat) isHistogram_ZeroCount() {} + +// A BucketSpan defines a number of consecutive buckets with their +// offset. Logically, it would be more straightforward to include the +// bucket counts in the Span. However, the protobuf representation is +// more compact in the way the data is structured here (with all the +// buckets in a single array separate from the Spans). +type BucketSpan struct { + state protoimpl.MessageState + sizeCache protoimpl.SizeCache + unknownFields protoimpl.UnknownFields + + Offset int32 `protobuf:"zigzag32,1,opt,name=offset,proto3" json:"offset,omitempty"` // Gap to previous span, or starting point for 1st span (which can be negative). + Length uint32 `protobuf:"varint,2,opt,name=length,proto3" json:"length,omitempty"` // Length of consecutive buckets. +} + +func (x *BucketSpan) Reset() { + *x = BucketSpan{} + if protoimpl.UnsafeEnabled { + mi := &file_io_prometheus_write_v2_types_proto_msgTypes[6] + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + ms.StoreMessageInfo(mi) + } +} + +func (x *BucketSpan) String() string { + return protoimpl.X.MessageStringOf(x) +} + +func (*BucketSpan) ProtoMessage() {} + +func (x *BucketSpan) ProtoReflect() protoreflect.Message { + mi := &file_io_prometheus_write_v2_types_proto_msgTypes[6] + if protoimpl.UnsafeEnabled && x != nil { + ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x)) + if ms.LoadMessageInfo() == nil { + ms.StoreMessageInfo(mi) + } + return ms + } + return mi.MessageOf(x) +} + +// Deprecated: Use BucketSpan.ProtoReflect.Descriptor instead. +func (*BucketSpan) Descriptor() ([]byte, []int) { + return file_io_prometheus_write_v2_types_proto_rawDescGZIP(), []int{6} +} + +func (x *BucketSpan) GetOffset() int32 { + if x != nil { + return x.Offset + } + return 0 +} + +func (x *BucketSpan) GetLength() uint32 { + if x != nil { + return x.Length + } + return 0 +} + +var File_io_prometheus_write_v2_types_proto protoreflect.FileDescriptor + +var file_io_prometheus_write_v2_types_proto_rawDesc = []byte{ + 0x0a, 0x22, 0x69, 0x6f, 0x2f, 0x70, 0x72, 0x6f, 0x6d, 0x65, 0x74, 0x68, 0x65, 0x75, 0x73, 0x2f, + 0x77, 0x72, 0x69, 0x74, 0x65, 0x2f, 0x76, 0x32, 0x2f, 0x74, 0x79, 0x70, 0x65, 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io.prometheus.write.v2.Histogram.ResetHint + (*Request)(nil), // 2: io.prometheus.write.v2.Request + (*TimeSeries)(nil), // 3: io.prometheus.write.v2.TimeSeries + (*Exemplar)(nil), // 4: io.prometheus.write.v2.Exemplar + (*Sample)(nil), // 5: io.prometheus.write.v2.Sample + (*Metadata)(nil), // 6: io.prometheus.write.v2.Metadata + (*Histogram)(nil), // 7: io.prometheus.write.v2.Histogram + (*BucketSpan)(nil), // 8: io.prometheus.write.v2.BucketSpan +} +var file_io_prometheus_write_v2_types_proto_depIdxs = []int32{ + 3, // 0: io.prometheus.write.v2.Request.timeseries:type_name -> io.prometheus.write.v2.TimeSeries + 5, // 1: io.prometheus.write.v2.TimeSeries.samples:type_name -> io.prometheus.write.v2.Sample + 7, // 2: io.prometheus.write.v2.TimeSeries.histograms:type_name -> io.prometheus.write.v2.Histogram + 4, // 3: io.prometheus.write.v2.TimeSeries.exemplars:type_name -> io.prometheus.write.v2.Exemplar + 6, // 4: io.prometheus.write.v2.TimeSeries.metadata:type_name -> io.prometheus.write.v2.Metadata + 0, // 5: io.prometheus.write.v2.Metadata.type:type_name -> io.prometheus.write.v2.Metadata.MetricType + 8, // 6: io.prometheus.write.v2.Histogram.negative_spans:type_name -> io.prometheus.write.v2.BucketSpan + 8, // 7: io.prometheus.write.v2.Histogram.positive_spans:type_name -> io.prometheus.write.v2.BucketSpan + 1, // 8: io.prometheus.write.v2.Histogram.reset_hint:type_name -> io.prometheus.write.v2.Histogram.ResetHint + 9, // [9:9] is the sub-list for method output_type + 9, // [9:9] is the sub-list for method input_type + 9, // [9:9] is the sub-list for extension type_name + 9, // [9:9] is the sub-list for extension extendee + 0, // [0:9] is the sub-list for field type_name +} + +func init() { file_io_prometheus_write_v2_types_proto_init() } +func file_io_prometheus_write_v2_types_proto_init() { + if File_io_prometheus_write_v2_types_proto != nil { + return + } + if !protoimpl.UnsafeEnabled { + file_io_prometheus_write_v2_types_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Request); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_io_prometheus_write_v2_types_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*TimeSeries); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_io_prometheus_write_v2_types_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Exemplar); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_io_prometheus_write_v2_types_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Sample); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_io_prometheus_write_v2_types_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Metadata); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_io_prometheus_write_v2_types_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*Histogram); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + file_io_prometheus_write_v2_types_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} { + switch v := v.(*BucketSpan); i { + case 0: + return &v.state + case 1: + return &v.sizeCache + case 2: + return &v.unknownFields + default: + return nil + } + } + } + file_io_prometheus_write_v2_types_proto_msgTypes[5].OneofWrappers = []interface{}{ + (*Histogram_CountInt)(nil), + (*Histogram_CountFloat)(nil), + (*Histogram_ZeroCountInt)(nil), + (*Histogram_ZeroCountFloat)(nil), + } + type x struct{} + out := protoimpl.TypeBuilder{ + File: protoimpl.DescBuilder{ + GoPackagePath: reflect.TypeOf(x{}).PkgPath(), + RawDescriptor: file_io_prometheus_write_v2_types_proto_rawDesc, + NumEnums: 2, + NumMessages: 7, + NumExtensions: 0, + NumServices: 0, + }, + GoTypes: file_io_prometheus_write_v2_types_proto_goTypes, + DependencyIndexes: file_io_prometheus_write_v2_types_proto_depIdxs, + EnumInfos: file_io_prometheus_write_v2_types_proto_enumTypes, + MessageInfos: file_io_prometheus_write_v2_types_proto_msgTypes, + }.Build() + File_io_prometheus_write_v2_types_proto = out.File + file_io_prometheus_write_v2_types_proto_rawDesc = nil + file_io_prometheus_write_v2_types_proto_goTypes = nil + file_io_prometheus_write_v2_types_proto_depIdxs = nil +} diff --git a/api/prometheus/v1/remote/genproto/v2/types_vtproto.pb.go b/api/prometheus/v1/remote/genproto/v2/types_vtproto.pb.go new file mode 100644 index 0000000..6ab17a2 --- /dev/null +++ b/api/prometheus/v1/remote/genproto/v2/types_vtproto.pb.go @@ -0,0 +1,2265 @@ +// Code generated by protoc-gen-go-vtproto. DO NOT EDIT. +// protoc-gen-go-vtproto version: v0.6.0 +// source: io/prometheus/write/v2/types.proto + +package writev2 + +import ( + binary "encoding/binary" + fmt "fmt" + io "io" + math "math" + + protoimpl "google.golang.org/protobuf/runtime/protoimpl" + + protohelpers "github.com/prometheus/client_golang/internal/github.com/planetscale/vtprotobuf/protohelpers" +) + +const ( + // Verify that this generated code is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion) + // Verify that runtime/protoimpl is sufficiently up-to-date. + _ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20) +) + +func (m *Request) MarshalVT() (dAtA []byte, err error) { + if m == nil { + return nil, nil + } + size := m.SizeVT() + dAtA = make([]byte, size) + n, err := m.MarshalToSizedBufferVT(dAtA[:size]) + if err != nil { + return nil, err + } + return dAtA[:n], nil +} + +func (m *Request) MarshalToVT(dAtA []byte) (int, error) { + size := m.SizeVT() + return m.MarshalToSizedBufferVT(dAtA[:size]) +} + +func (m *Request) MarshalToSizedBufferVT(dAtA []byte) (int, error) { + if m == nil { + return 0, nil + } + i := len(dAtA) + _ = i + var l int + _ = l + if m.unknownFields != nil { + i -= len(m.unknownFields) + copy(dAtA[i:], m.unknownFields) + } + if len(m.Timeseries) > 0 { + for iNdEx := len(m.Timeseries) - 1; iNdEx >= 0; iNdEx-- { + size, err := m.Timeseries[iNdEx].MarshalToSizedBufferVT(dAtA[:i]) + if err != nil { + return 0, err + } + i -= size + i = protohelpers.EncodeVarint(dAtA, i, uint64(size)) + i-- + dAtA[i] = 0x2a + } + } + if len(m.Symbols) > 0 { + for iNdEx := len(m.Symbols) - 1; iNdEx >= 0; iNdEx-- { + i -= len(m.Symbols[iNdEx]) + copy(dAtA[i:], m.Symbols[iNdEx]) + i = protohelpers.EncodeVarint(dAtA, i, uint64(len(m.Symbols[iNdEx]))) + i-- + dAtA[i] = 0x22 + } + } + return len(dAtA) - i, nil +} + +func (m *TimeSeries) MarshalVT() (dAtA []byte, err error) { + if m == nil { + return nil, nil + } + size := m.SizeVT() + dAtA = make([]byte, size) + n, err := m.MarshalToSizedBufferVT(dAtA[:size]) + if err != nil { + return nil, err + } + return dAtA[:n], nil +} + +func (m *TimeSeries) MarshalToVT(dAtA []byte) (int, error) { + size := m.SizeVT() + return m.MarshalToSizedBufferVT(dAtA[:size]) +} + +func (m *TimeSeries) MarshalToSizedBufferVT(dAtA []byte) (int, error) { + if m == nil { + return 0, nil + } + i := len(dAtA) + _ = i + var l int + _ = l + if m.unknownFields != nil { + i -= len(m.unknownFields) + copy(dAtA[i:], m.unknownFields) + } + if m.CreatedTimestamp != 0 { + i = protohelpers.EncodeVarint(dAtA, i, uint64(m.CreatedTimestamp)) + i-- + dAtA[i] = 0x30 + } + if m.Metadata != nil { + size, err := m.Metadata.MarshalToSizedBufferVT(dAtA[:i]) + if err != nil { + return 0, err + } + i -= size + i = protohelpers.EncodeVarint(dAtA, i, uint64(size)) + i-- + dAtA[i] = 0x2a + } + if len(m.Exemplars) > 0 { + for iNdEx := len(m.Exemplars) - 1; iNdEx >= 0; iNdEx-- { + size, err := m.Exemplars[iNdEx].MarshalToSizedBufferVT(dAtA[:i]) + if err != nil { + return 0, err + } + i -= size + i = protohelpers.EncodeVarint(dAtA, i, uint64(size)) + i-- + dAtA[i] = 0x22 + } + } + if len(m.Histograms) > 0 { + for iNdEx := len(m.Histograms) - 1; iNdEx >= 0; iNdEx-- { + size, err := m.Histograms[iNdEx].MarshalToSizedBufferVT(dAtA[:i]) + if err != nil { + return 0, err + } + i -= size + i = protohelpers.EncodeVarint(dAtA, i, uint64(size)) + i-- + dAtA[i] = 0x1a + } + } + if len(m.Samples) > 0 { + for iNdEx := len(m.Samples) - 1; iNdEx >= 0; iNdEx-- { + size, err := m.Samples[iNdEx].MarshalToSizedBufferVT(dAtA[:i]) + if err != nil { + return 0, err + } + i -= size + i = protohelpers.EncodeVarint(dAtA, i, uint64(size)) + i-- + dAtA[i] = 0x12 + } + } + if len(m.LabelsRefs) > 0 { + var pksize2 int + for _, num := range m.LabelsRefs { + pksize2 += protohelpers.SizeOfVarint(uint64(num)) + } + i -= pksize2 + j1 := i + for _, num := range m.LabelsRefs { + for num >= 1<<7 { + dAtA[j1] = uint8(uint64(num)&0x7f | 0x80) + num >>= 7 + j1++ + } + dAtA[j1] = uint8(num) + j1++ + } + i = protohelpers.EncodeVarint(dAtA, i, uint64(pksize2)) + i-- + dAtA[i] = 0xa + } + return len(dAtA) - i, nil +} + +func (m *Exemplar) MarshalVT() (dAtA []byte, err error) { + if m == nil { + return nil, nil + } + size := m.SizeVT() + dAtA = make([]byte, size) + n, err := m.MarshalToSizedBufferVT(dAtA[:size]) + if err != nil { + return nil, err + } + return dAtA[:n], nil +} + +func (m *Exemplar) MarshalToVT(dAtA []byte) (int, error) { + size := m.SizeVT() + return m.MarshalToSizedBufferVT(dAtA[:size]) +} + +func (m *Exemplar) MarshalToSizedBufferVT(dAtA []byte) (int, error) { + if m == nil { + return 0, nil + } + i := len(dAtA) + _ = i + var l int + _ = l + if m.unknownFields != nil { + i -= len(m.unknownFields) + copy(dAtA[i:], m.unknownFields) + } + if m.Timestamp != 0 { + i = protohelpers.EncodeVarint(dAtA, i, uint64(m.Timestamp)) + i-- + dAtA[i] = 0x18 + } + if m.Value != 0 { + i -= 8 + binary.LittleEndian.PutUint64(dAtA[i:], uint64(math.Float64bits(float64(m.Value)))) + i-- + dAtA[i] = 0x11 + } + if len(m.LabelsRefs) > 0 { + var pksize2 int + for _, num := range m.LabelsRefs { + pksize2 += protohelpers.SizeOfVarint(uint64(num)) + } + i -= pksize2 + j1 := i + for _, num := range m.LabelsRefs { + for num >= 1<<7 { + dAtA[j1] = uint8(uint64(num)&0x7f | 0x80) + num >>= 7 + j1++ + } + dAtA[j1] = uint8(num) + j1++ + } + i = protohelpers.EncodeVarint(dAtA, i, uint64(pksize2)) + i-- + dAtA[i] = 0xa + } + return len(dAtA) - i, nil +} + +func (m *Sample) MarshalVT() (dAtA []byte, err error) { + if m == nil { + return nil, nil + } + size := m.SizeVT() + dAtA = make([]byte, size) + n, err := m.MarshalToSizedBufferVT(dAtA[:size]) + if err != nil { + return nil, err + } + return dAtA[:n], nil +} + +func (m *Sample) MarshalToVT(dAtA []byte) (int, error) { + size := m.SizeVT() + return m.MarshalToSizedBufferVT(dAtA[:size]) +} + +func (m *Sample) MarshalToSizedBufferVT(dAtA []byte) (int, error) { + if m == nil { + return 0, nil + } + i := len(dAtA) + _ = i + var l int + _ = l + if m.unknownFields != nil { + i -= len(m.unknownFields) + copy(dAtA[i:], m.unknownFields) + } + if m.Timestamp != 0 { + i = protohelpers.EncodeVarint(dAtA, i, uint64(m.Timestamp)) + i-- + dAtA[i] = 0x10 + } + if m.Value != 0 { + i -= 8 + binary.LittleEndian.PutUint64(dAtA[i:], uint64(math.Float64bits(float64(m.Value)))) + i-- + dAtA[i] = 0x9 + } + return len(dAtA) - i, nil +} + +func (m *Metadata) MarshalVT() (dAtA []byte, err error) { + if m == nil { + return nil, nil + } + size := m.SizeVT() + dAtA = make([]byte, size) + n, err := m.MarshalToSizedBufferVT(dAtA[:size]) + if err != nil { + return nil, err + } + return dAtA[:n], nil +} + +func (m *Metadata) MarshalToVT(dAtA []byte) (int, error) { + size := m.SizeVT() + return m.MarshalToSizedBufferVT(dAtA[:size]) +} + +func (m *Metadata) MarshalToSizedBufferVT(dAtA []byte) (int, error) { + if m == nil { + return 0, nil + } + i := len(dAtA) + _ = i + var l int + _ = l + if m.unknownFields != nil { + i -= len(m.unknownFields) + copy(dAtA[i:], m.unknownFields) + } + if m.UnitRef != 0 { + i = protohelpers.EncodeVarint(dAtA, i, uint64(m.UnitRef)) + i-- + dAtA[i] = 0x20 + } + if m.HelpRef != 0 { + i = protohelpers.EncodeVarint(dAtA, i, uint64(m.HelpRef)) + i-- + dAtA[i] = 0x18 + } + if m.Type != 0 { + i = protohelpers.EncodeVarint(dAtA, i, uint64(m.Type)) + i-- + dAtA[i] = 0x8 + } + return len(dAtA) - i, nil +} + +func (m *Histogram) MarshalVT() (dAtA []byte, err error) { + if m == nil { + return nil, nil + } + size := m.SizeVT() + dAtA = make([]byte, size) + n, err := m.MarshalToSizedBufferVT(dAtA[:size]) + if err != nil { + return nil, err + } + return dAtA[:n], nil +} + +func (m *Histogram) MarshalToVT(dAtA []byte) (int, error) { + size := m.SizeVT() + return m.MarshalToSizedBufferVT(dAtA[:size]) +} + +func (m *Histogram) MarshalToSizedBufferVT(dAtA []byte) (int, error) { + if m == nil { + return 0, nil + } + i := len(dAtA) + _ = i + var l int + _ = l + if m.unknownFields != nil { + i -= len(m.unknownFields) + copy(dAtA[i:], m.unknownFields) + } + if vtmsg, ok := m.ZeroCount.(interface { + MarshalToSizedBufferVT([]byte) (int, error) + }); ok { + size, err := vtmsg.MarshalToSizedBufferVT(dAtA[:i]) + if err != nil { + return 0, err + } + i -= size + } + if vtmsg, ok := m.Count.(interface { + MarshalToSizedBufferVT([]byte) (int, error) + }); ok { + size, err := vtmsg.MarshalToSizedBufferVT(dAtA[:i]) + if err != nil { + return 0, err + } + i -= size + } + if len(m.CustomValues) > 0 { + for iNdEx := len(m.CustomValues) - 1; iNdEx >= 0; iNdEx-- { + f1 := math.Float64bits(float64(m.CustomValues[iNdEx])) + i -= 8 + binary.LittleEndian.PutUint64(dAtA[i:], uint64(f1)) + } + i = protohelpers.EncodeVarint(dAtA, i, uint64(len(m.CustomValues)*8)) + i-- + dAtA[i] = 0x1 + i-- + dAtA[i] = 0x82 + } + if m.Timestamp != 0 { + i = protohelpers.EncodeVarint(dAtA, i, uint64(m.Timestamp)) + i-- + dAtA[i] = 0x78 + } + if m.ResetHint != 0 { + i = protohelpers.EncodeVarint(dAtA, i, uint64(m.ResetHint)) + i-- + dAtA[i] = 0x70 + } + if len(m.PositiveCounts) > 0 { + for iNdEx := len(m.PositiveCounts) - 1; iNdEx >= 0; iNdEx-- { + f2 := math.Float64bits(float64(m.PositiveCounts[iNdEx])) + i -= 8 + binary.LittleEndian.PutUint64(dAtA[i:], uint64(f2)) + } + i = protohelpers.EncodeVarint(dAtA, i, uint64(len(m.PositiveCounts)*8)) + i-- + dAtA[i] = 0x6a + } + if len(m.PositiveDeltas) > 0 { + var pksize4 int + for _, num := range m.PositiveDeltas { + pksize4 += protohelpers.SizeOfZigzag(uint64(num)) + } + i -= pksize4 + j3 := i + for _, num := range m.PositiveDeltas { + x5 := (uint64(num) << 1) ^ uint64((num >> 63)) + for x5 >= 1<<7 { + dAtA[j3] = uint8(uint64(x5)&0x7f | 0x80) + j3++ + x5 >>= 7 + } + dAtA[j3] = uint8(x5) + j3++ + } + i = protohelpers.EncodeVarint(dAtA, i, uint64(pksize4)) + i-- + dAtA[i] = 0x62 + } + if len(m.PositiveSpans) > 0 { + for iNdEx := len(m.PositiveSpans) - 1; iNdEx >= 0; iNdEx-- { + size, err := m.PositiveSpans[iNdEx].MarshalToSizedBufferVT(dAtA[:i]) + if err != nil { + return 0, err + } + i -= size + i = protohelpers.EncodeVarint(dAtA, i, uint64(size)) + i-- + dAtA[i] = 0x5a + } + } + if len(m.NegativeCounts) > 0 { + for iNdEx := len(m.NegativeCounts) - 1; iNdEx >= 0; iNdEx-- { + f6 := math.Float64bits(float64(m.NegativeCounts[iNdEx])) + i -= 8 + binary.LittleEndian.PutUint64(dAtA[i:], uint64(f6)) + } + i = protohelpers.EncodeVarint(dAtA, i, uint64(len(m.NegativeCounts)*8)) + i-- + dAtA[i] = 0x52 + } + if len(m.NegativeDeltas) > 0 { + var pksize8 int + for _, num := range m.NegativeDeltas { + pksize8 += protohelpers.SizeOfZigzag(uint64(num)) + } + i -= pksize8 + j7 := i + for _, num := range m.NegativeDeltas { + x9 := (uint64(num) << 1) ^ uint64((num >> 63)) + for x9 >= 1<<7 { + dAtA[j7] = uint8(uint64(x9)&0x7f | 0x80) + j7++ + x9 >>= 7 + } + dAtA[j7] = uint8(x9) + j7++ + } + i = protohelpers.EncodeVarint(dAtA, i, uint64(pksize8)) + i-- + dAtA[i] = 0x4a + } + if len(m.NegativeSpans) > 0 { + for iNdEx := len(m.NegativeSpans) - 1; iNdEx >= 0; iNdEx-- { + size, err := m.NegativeSpans[iNdEx].MarshalToSizedBufferVT(dAtA[:i]) + if err != nil { + return 0, err + } + i -= size + i = protohelpers.EncodeVarint(dAtA, i, uint64(size)) + i-- + dAtA[i] = 0x42 + } + } + if m.ZeroThreshold != 0 { + i -= 8 + binary.LittleEndian.PutUint64(dAtA[i:], uint64(math.Float64bits(float64(m.ZeroThreshold)))) + i-- + dAtA[i] = 0x29 + } + if m.Schema != 0 { + i = protohelpers.EncodeVarint(dAtA, i, uint64((uint32(m.Schema)<<1)^uint32((m.Schema>>31)))) + i-- + dAtA[i] = 0x20 + } + if m.Sum != 0 { + i -= 8 + binary.LittleEndian.PutUint64(dAtA[i:], uint64(math.Float64bits(float64(m.Sum)))) + i-- + dAtA[i] = 0x19 + } + return len(dAtA) - i, nil +} + +func (m *Histogram_CountInt) MarshalToVT(dAtA []byte) (int, error) { + size := m.SizeVT() + return m.MarshalToSizedBufferVT(dAtA[:size]) +} + +func (m *Histogram_CountInt) MarshalToSizedBufferVT(dAtA []byte) (int, error) { + i := len(dAtA) + i = protohelpers.EncodeVarint(dAtA, i, uint64(m.CountInt)) + i-- + dAtA[i] = 0x8 + return len(dAtA) - i, nil +} +func (m *Histogram_CountFloat) MarshalToVT(dAtA []byte) (int, error) { + size := m.SizeVT() + return m.MarshalToSizedBufferVT(dAtA[:size]) +} + +func (m *Histogram_CountFloat) MarshalToSizedBufferVT(dAtA []byte) (int, error) { + i := len(dAtA) + i -= 8 + binary.LittleEndian.PutUint64(dAtA[i:], uint64(math.Float64bits(float64(m.CountFloat)))) + i-- + dAtA[i] = 0x11 + return len(dAtA) - i, nil +} +func (m *Histogram_ZeroCountInt) MarshalToVT(dAtA []byte) (int, error) { + size := m.SizeVT() + return m.MarshalToSizedBufferVT(dAtA[:size]) +} + +func (m *Histogram_ZeroCountInt) MarshalToSizedBufferVT(dAtA []byte) (int, error) { + i := len(dAtA) + i = protohelpers.EncodeVarint(dAtA, i, uint64(m.ZeroCountInt)) + i-- + dAtA[i] = 0x30 + return len(dAtA) - i, nil +} +func (m *Histogram_ZeroCountFloat) MarshalToVT(dAtA []byte) (int, error) { + size := m.SizeVT() + return m.MarshalToSizedBufferVT(dAtA[:size]) +} + +func (m *Histogram_ZeroCountFloat) MarshalToSizedBufferVT(dAtA []byte) (int, error) { + i := len(dAtA) + i -= 8 + binary.LittleEndian.PutUint64(dAtA[i:], uint64(math.Float64bits(float64(m.ZeroCountFloat)))) + i-- + dAtA[i] = 0x39 + return len(dAtA) - i, nil +} +func (m *BucketSpan) MarshalVT() (dAtA []byte, err error) { + if m == nil { + return nil, nil + } + size := m.SizeVT() + dAtA = make([]byte, size) + n, err := m.MarshalToSizedBufferVT(dAtA[:size]) + if err != nil { + return nil, err + } + return dAtA[:n], nil +} + +func (m *BucketSpan) MarshalToVT(dAtA []byte) (int, error) { + size := m.SizeVT() + return m.MarshalToSizedBufferVT(dAtA[:size]) +} + +func (m *BucketSpan) MarshalToSizedBufferVT(dAtA []byte) (int, error) { + if m == nil { + return 0, nil + } + i := len(dAtA) + _ = i + var l int + _ = l + if m.unknownFields != nil { + i -= len(m.unknownFields) + copy(dAtA[i:], m.unknownFields) + } + if m.Length != 0 { + i = protohelpers.EncodeVarint(dAtA, i, uint64(m.Length)) + i-- + dAtA[i] = 0x10 + } + if m.Offset != 0 { + i = protohelpers.EncodeVarint(dAtA, i, uint64((uint32(m.Offset)<<1)^uint32((m.Offset>>31)))) + i-- + dAtA[i] = 0x8 + } + return len(dAtA) - i, nil +} + +func (m *Request) SizeVT() (n int) { + if m == nil { + return 0 + } + var l int + _ = l + if len(m.Symbols) > 0 { + for _, s := range m.Symbols { + l = len(s) + n += 1 + l + protohelpers.SizeOfVarint(uint64(l)) + } + } + if len(m.Timeseries) > 0 { + for _, e := range m.Timeseries { + l = e.SizeVT() + n += 1 + l + protohelpers.SizeOfVarint(uint64(l)) + } + } + n += len(m.unknownFields) + return n +} + +func (m *TimeSeries) SizeVT() (n int) { + if m == nil { + return 0 + } + var l int + _ = l + if len(m.LabelsRefs) > 0 { + l = 0 + for _, e := range m.LabelsRefs { + l += protohelpers.SizeOfVarint(uint64(e)) + } + n += 1 + protohelpers.SizeOfVarint(uint64(l)) + l + } + if len(m.Samples) > 0 { + for _, e := range m.Samples { + l = e.SizeVT() + n += 1 + l + protohelpers.SizeOfVarint(uint64(l)) + } + } + if len(m.Histograms) > 0 { + for _, e := range m.Histograms { + l = e.SizeVT() + n += 1 + l + protohelpers.SizeOfVarint(uint64(l)) + } + } + if len(m.Exemplars) > 0 { + for _, e := range m.Exemplars { + l = e.SizeVT() + n += 1 + l + protohelpers.SizeOfVarint(uint64(l)) + } + } + if m.Metadata != nil { + l = m.Metadata.SizeVT() + n += 1 + l + protohelpers.SizeOfVarint(uint64(l)) + } + if m.CreatedTimestamp != 0 { + n += 1 + protohelpers.SizeOfVarint(uint64(m.CreatedTimestamp)) + } + n += len(m.unknownFields) + return n +} + +func (m *Exemplar) SizeVT() (n int) { + if m == nil { + return 0 + } + var l int + _ = l + if len(m.LabelsRefs) > 0 { + l = 0 + for _, e := range m.LabelsRefs { + l += protohelpers.SizeOfVarint(uint64(e)) + } + n += 1 + protohelpers.SizeOfVarint(uint64(l)) + l + } + if m.Value != 0 { + n += 9 + } + if m.Timestamp != 0 { + n += 1 + protohelpers.SizeOfVarint(uint64(m.Timestamp)) + } + n += len(m.unknownFields) + return n +} + +func (m *Sample) SizeVT() (n int) { + if m == nil { + return 0 + } + var l int + _ = l + if m.Value != 0 { + n += 9 + } + if m.Timestamp != 0 { + n += 1 + protohelpers.SizeOfVarint(uint64(m.Timestamp)) + } + n += len(m.unknownFields) + return n +} + +func (m *Metadata) SizeVT() (n int) { + if m == nil { + return 0 + } + var l int + _ = l + if m.Type != 0 { + n += 1 + protohelpers.SizeOfVarint(uint64(m.Type)) + } + if m.HelpRef != 0 { + n += 1 + protohelpers.SizeOfVarint(uint64(m.HelpRef)) + } + if m.UnitRef != 0 { + n += 1 + protohelpers.SizeOfVarint(uint64(m.UnitRef)) + } + n += len(m.unknownFields) + return n +} + +func (m *Histogram) SizeVT() (n int) { + if m == nil { + return 0 + } + var l int + _ = l + if vtmsg, ok := m.Count.(interface{ SizeVT() int }); ok { + n += vtmsg.SizeVT() + } + if m.Sum != 0 { + n += 9 + } + if m.Schema != 0 { + n += 1 + protohelpers.SizeOfZigzag(uint64(m.Schema)) + } + if m.ZeroThreshold != 0 { + n += 9 + } + if vtmsg, ok := m.ZeroCount.(interface{ SizeVT() int }); ok { + n += vtmsg.SizeVT() + } + if len(m.NegativeSpans) > 0 { + for _, e := range m.NegativeSpans { + l = e.SizeVT() + n += 1 + l + protohelpers.SizeOfVarint(uint64(l)) + } + } + if len(m.NegativeDeltas) > 0 { + l = 0 + for _, e := range m.NegativeDeltas { + l += protohelpers.SizeOfZigzag(uint64(e)) + } + n += 1 + protohelpers.SizeOfVarint(uint64(l)) + l + } + if len(m.NegativeCounts) > 0 { + n += 1 + protohelpers.SizeOfVarint(uint64(len(m.NegativeCounts)*8)) + len(m.NegativeCounts)*8 + } + if len(m.PositiveSpans) > 0 { + for _, e := range m.PositiveSpans { + l = e.SizeVT() + n += 1 + l + protohelpers.SizeOfVarint(uint64(l)) + } + } + if len(m.PositiveDeltas) > 0 { + l = 0 + for _, e := range m.PositiveDeltas { + l += protohelpers.SizeOfZigzag(uint64(e)) + } + n += 1 + protohelpers.SizeOfVarint(uint64(l)) + l + } + if len(m.PositiveCounts) > 0 { + n += 1 + protohelpers.SizeOfVarint(uint64(len(m.PositiveCounts)*8)) + len(m.PositiveCounts)*8 + } + if m.ResetHint != 0 { + n += 1 + protohelpers.SizeOfVarint(uint64(m.ResetHint)) + } + if m.Timestamp != 0 { + n += 1 + protohelpers.SizeOfVarint(uint64(m.Timestamp)) + } + if len(m.CustomValues) > 0 { + n += 2 + protohelpers.SizeOfVarint(uint64(len(m.CustomValues)*8)) + len(m.CustomValues)*8 + } + n += len(m.unknownFields) + return n +} + +func (m *Histogram_CountInt) SizeVT() (n int) { + if m == nil { + return 0 + } + var l int + _ = l + n += 1 + protohelpers.SizeOfVarint(uint64(m.CountInt)) + return n +} +func (m *Histogram_CountFloat) SizeVT() (n int) { + if m == nil { + return 0 + } + var l int + _ = l + n += 9 + return n +} +func (m *Histogram_ZeroCountInt) SizeVT() (n int) { + if m == nil { + return 0 + } + var l int + _ = l + n += 1 + protohelpers.SizeOfVarint(uint64(m.ZeroCountInt)) + return n +} +func (m *Histogram_ZeroCountFloat) SizeVT() (n int) { + if m == nil { + return 0 + } + var l int + _ = l + n += 9 + return n +} +func (m *BucketSpan) SizeVT() (n int) { + if m == nil { + return 0 + } + var l int + _ = l + if m.Offset != 0 { + n += 1 + protohelpers.SizeOfZigzag(uint64(m.Offset)) + } + if m.Length != 0 { + n += 1 + protohelpers.SizeOfVarint(uint64(m.Length)) + } + n += len(m.unknownFields) + return n +} + +func (m *Request) UnmarshalVT(dAtA []byte) error { + l := len(dAtA) + iNdEx := 0 + for iNdEx < l { + preIndex := iNdEx + var wire uint64 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + wire |= uint64(b&0x7F) << shift + if b < 0x80 { + break + } + } + fieldNum := int32(wire >> 3) + wireType := int(wire & 0x7) + if wireType == 4 { + return fmt.Errorf("proto: Request: wiretype end group for non-group") + } + if fieldNum <= 0 { + return fmt.Errorf("proto: Request: illegal tag %d (wire type %d)", fieldNum, wire) + } + switch fieldNum { + case 4: + if wireType != 2 { + return fmt.Errorf("proto: wrong wireType = %d for field Symbols", wireType) + } + var stringLen uint64 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + stringLen |= uint64(b&0x7F) << shift + if b < 0x80 { + break + } + } + intStringLen := int(stringLen) + if intStringLen < 0 { + return protohelpers.ErrInvalidLength + } + postIndex := iNdEx + intStringLen + if postIndex < 0 { + return protohelpers.ErrInvalidLength + } + if postIndex > l { + return io.ErrUnexpectedEOF + } + m.Symbols = append(m.Symbols, string(dAtA[iNdEx:postIndex])) + iNdEx = postIndex + case 5: + if wireType != 2 { + return fmt.Errorf("proto: wrong wireType = %d for field Timeseries", wireType) + } + var msglen int + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + msglen |= int(b&0x7F) << shift + if b < 0x80 { + break + } + } + if msglen < 0 { + return protohelpers.ErrInvalidLength + } + postIndex := iNdEx + msglen + if postIndex < 0 { + return protohelpers.ErrInvalidLength + } + if postIndex > l { + return io.ErrUnexpectedEOF + } + m.Timeseries = append(m.Timeseries, &TimeSeries{}) + if err := m.Timeseries[len(m.Timeseries)-1].UnmarshalVT(dAtA[iNdEx:postIndex]); err != nil { + return err + } + iNdEx = postIndex + default: + iNdEx = preIndex + skippy, err := protohelpers.Skip(dAtA[iNdEx:]) + if err != nil { + return err + } + if (skippy < 0) || (iNdEx+skippy) < 0 { + return protohelpers.ErrInvalidLength + } + if (iNdEx + skippy) > l { + return io.ErrUnexpectedEOF + } + m.unknownFields = append(m.unknownFields, dAtA[iNdEx:iNdEx+skippy]...) + iNdEx += skippy + } + } + + if iNdEx > l { + return io.ErrUnexpectedEOF + } + return nil +} +func (m *TimeSeries) UnmarshalVT(dAtA []byte) error { + l := len(dAtA) + iNdEx := 0 + for iNdEx < l { + preIndex := iNdEx + var wire uint64 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + wire |= uint64(b&0x7F) << shift + if b < 0x80 { + break + } + } + fieldNum := int32(wire >> 3) + wireType := int(wire & 0x7) + if wireType == 4 { + return fmt.Errorf("proto: TimeSeries: wiretype end group for non-group") + } + if fieldNum <= 0 { + return fmt.Errorf("proto: TimeSeries: illegal tag %d (wire type %d)", fieldNum, wire) + } + switch fieldNum { + case 1: + if wireType == 0 { + var v uint32 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + v |= uint32(b&0x7F) << shift + if b < 0x80 { + break + } + } + m.LabelsRefs = append(m.LabelsRefs, v) + } else if wireType == 2 { + var packedLen int + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + packedLen |= int(b&0x7F) << shift + if b < 0x80 { + break + } + } + if packedLen < 0 { + return protohelpers.ErrInvalidLength + } + postIndex := iNdEx + packedLen + if postIndex < 0 { + return protohelpers.ErrInvalidLength + } + if postIndex > l { + return io.ErrUnexpectedEOF + } + var elementCount int + var count int + for _, integer := range dAtA[iNdEx:postIndex] { + if integer < 128 { + count++ + } + } + elementCount = count + if elementCount != 0 && len(m.LabelsRefs) == 0 { + m.LabelsRefs = make([]uint32, 0, elementCount) + } + for iNdEx < postIndex { + var v uint32 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + v |= uint32(b&0x7F) << shift + if b < 0x80 { + break + } + } + m.LabelsRefs = append(m.LabelsRefs, v) + } + } else { + return fmt.Errorf("proto: wrong wireType = %d for field LabelsRefs", wireType) + } + case 2: + if wireType != 2 { + return fmt.Errorf("proto: wrong wireType = %d for field Samples", wireType) + } + var msglen int + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + msglen |= int(b&0x7F) << shift + if b < 0x80 { + break + } + } + if msglen < 0 { + return protohelpers.ErrInvalidLength + } + postIndex := iNdEx + msglen + if postIndex < 0 { + return protohelpers.ErrInvalidLength + } + if postIndex > l { + return io.ErrUnexpectedEOF + } + m.Samples = append(m.Samples, &Sample{}) + if err := m.Samples[len(m.Samples)-1].UnmarshalVT(dAtA[iNdEx:postIndex]); err != nil { + return err + } + iNdEx = postIndex + case 3: + if wireType != 2 { + return fmt.Errorf("proto: wrong wireType = %d for field Histograms", wireType) + } + var msglen int + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + msglen |= int(b&0x7F) << shift + if b < 0x80 { + break + } + } + if msglen < 0 { + return protohelpers.ErrInvalidLength + } + postIndex := iNdEx + msglen + if postIndex < 0 { + return protohelpers.ErrInvalidLength + } + if postIndex > l { + return io.ErrUnexpectedEOF + } + m.Histograms = append(m.Histograms, &Histogram{}) + if err := m.Histograms[len(m.Histograms)-1].UnmarshalVT(dAtA[iNdEx:postIndex]); err != nil { + return err + } + iNdEx = postIndex + case 4: + if wireType != 2 { + return fmt.Errorf("proto: wrong wireType = %d for field Exemplars", wireType) + } + var msglen int + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + msglen |= int(b&0x7F) << shift + if b < 0x80 { + break + } + } + if msglen < 0 { + return protohelpers.ErrInvalidLength + } + postIndex := iNdEx + msglen + if postIndex < 0 { + return protohelpers.ErrInvalidLength + } + if postIndex > l { + return io.ErrUnexpectedEOF + } + m.Exemplars = append(m.Exemplars, &Exemplar{}) + if err := m.Exemplars[len(m.Exemplars)-1].UnmarshalVT(dAtA[iNdEx:postIndex]); err != nil { + return err + } + iNdEx = postIndex + case 5: + if wireType != 2 { + return fmt.Errorf("proto: wrong wireType = %d for field Metadata", wireType) + } + var msglen int + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + msglen |= int(b&0x7F) << shift + if b < 0x80 { + break + } + } + if msglen < 0 { + return protohelpers.ErrInvalidLength + } + postIndex := iNdEx + msglen + if postIndex < 0 { + return protohelpers.ErrInvalidLength + } + if postIndex > l { + return io.ErrUnexpectedEOF + } + if m.Metadata == nil { + m.Metadata = &Metadata{} + } + if err := m.Metadata.UnmarshalVT(dAtA[iNdEx:postIndex]); err != nil { + return err + } + iNdEx = postIndex + case 6: + if wireType != 0 { + return fmt.Errorf("proto: wrong wireType = %d for field CreatedTimestamp", wireType) + } + m.CreatedTimestamp = 0 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + m.CreatedTimestamp |= int64(b&0x7F) << shift + if b < 0x80 { + break + } + } + default: + iNdEx = preIndex + skippy, err := protohelpers.Skip(dAtA[iNdEx:]) + if err != nil { + return err + } + if (skippy < 0) || (iNdEx+skippy) < 0 { + return protohelpers.ErrInvalidLength + } + if (iNdEx + skippy) > l { + return io.ErrUnexpectedEOF + } + m.unknownFields = append(m.unknownFields, dAtA[iNdEx:iNdEx+skippy]...) + iNdEx += skippy + } + } + + if iNdEx > l { + return io.ErrUnexpectedEOF + } + return nil +} +func (m *Exemplar) UnmarshalVT(dAtA []byte) error { + l := len(dAtA) + iNdEx := 0 + for iNdEx < l { + preIndex := iNdEx + var wire uint64 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + wire |= uint64(b&0x7F) << shift + if b < 0x80 { + break + } + } + fieldNum := int32(wire >> 3) + wireType := int(wire & 0x7) + if wireType == 4 { + return fmt.Errorf("proto: Exemplar: wiretype end group for non-group") + } + if fieldNum <= 0 { + return fmt.Errorf("proto: Exemplar: illegal tag %d (wire type %d)", fieldNum, wire) + } + switch fieldNum { + case 1: + if wireType == 0 { + var v uint32 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + v |= uint32(b&0x7F) << shift + if b < 0x80 { + break + } + } + m.LabelsRefs = append(m.LabelsRefs, v) + } else if wireType == 2 { + var packedLen int + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + packedLen |= int(b&0x7F) << shift + if b < 0x80 { + break + } + } + if packedLen < 0 { + return protohelpers.ErrInvalidLength + } + postIndex := iNdEx + packedLen + if postIndex < 0 { + return protohelpers.ErrInvalidLength + } + if postIndex > l { + return io.ErrUnexpectedEOF + } + var elementCount int + var count int + for _, integer := range dAtA[iNdEx:postIndex] { + if integer < 128 { + count++ + } + } + elementCount = count + if elementCount != 0 && len(m.LabelsRefs) == 0 { + m.LabelsRefs = make([]uint32, 0, elementCount) + } + for iNdEx < postIndex { + var v uint32 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + v |= uint32(b&0x7F) << shift + if b < 0x80 { + break + } + } + m.LabelsRefs = append(m.LabelsRefs, v) + } + } else { + return fmt.Errorf("proto: wrong wireType = %d for field LabelsRefs", wireType) + } + case 2: + if wireType != 1 { + return fmt.Errorf("proto: wrong wireType = %d for field Value", wireType) + } + var v uint64 + if (iNdEx + 8) > l { + return io.ErrUnexpectedEOF + } + v = uint64(binary.LittleEndian.Uint64(dAtA[iNdEx:])) + iNdEx += 8 + m.Value = float64(math.Float64frombits(v)) + case 3: + if wireType != 0 { + return fmt.Errorf("proto: wrong wireType = %d for field Timestamp", wireType) + } + m.Timestamp = 0 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + m.Timestamp |= int64(b&0x7F) << shift + if b < 0x80 { + break + } + } + default: + iNdEx = preIndex + skippy, err := protohelpers.Skip(dAtA[iNdEx:]) + if err != nil { + return err + } + if (skippy < 0) || (iNdEx+skippy) < 0 { + return protohelpers.ErrInvalidLength + } + if (iNdEx + skippy) > l { + return io.ErrUnexpectedEOF + } + m.unknownFields = append(m.unknownFields, dAtA[iNdEx:iNdEx+skippy]...) + iNdEx += skippy + } + } + + if iNdEx > l { + return io.ErrUnexpectedEOF + } + return nil +} +func (m *Sample) UnmarshalVT(dAtA []byte) error { + l := len(dAtA) + iNdEx := 0 + for iNdEx < l { + preIndex := iNdEx + var wire uint64 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + wire |= uint64(b&0x7F) << shift + if b < 0x80 { + break + } + } + fieldNum := int32(wire >> 3) + wireType := int(wire & 0x7) + if wireType == 4 { + return fmt.Errorf("proto: Sample: wiretype end group for non-group") + } + if fieldNum <= 0 { + return fmt.Errorf("proto: Sample: illegal tag %d (wire type %d)", fieldNum, wire) + } + switch fieldNum { + case 1: + if wireType != 1 { + return fmt.Errorf("proto: wrong wireType = %d for field Value", wireType) + } + var v uint64 + if (iNdEx + 8) > l { + return io.ErrUnexpectedEOF + } + v = uint64(binary.LittleEndian.Uint64(dAtA[iNdEx:])) + iNdEx += 8 + m.Value = float64(math.Float64frombits(v)) + case 2: + if wireType != 0 { + return fmt.Errorf("proto: wrong wireType = %d for field Timestamp", wireType) + } + m.Timestamp = 0 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + m.Timestamp |= int64(b&0x7F) << shift + if b < 0x80 { + break + } + } + default: + iNdEx = preIndex + skippy, err := protohelpers.Skip(dAtA[iNdEx:]) + if err != nil { + return err + } + if (skippy < 0) || (iNdEx+skippy) < 0 { + return protohelpers.ErrInvalidLength + } + if (iNdEx + skippy) > l { + return io.ErrUnexpectedEOF + } + m.unknownFields = append(m.unknownFields, dAtA[iNdEx:iNdEx+skippy]...) + iNdEx += skippy + } + } + + if iNdEx > l { + return io.ErrUnexpectedEOF + } + return nil +} +func (m *Metadata) UnmarshalVT(dAtA []byte) error { + l := len(dAtA) + iNdEx := 0 + for iNdEx < l { + preIndex := iNdEx + var wire uint64 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + wire |= uint64(b&0x7F) << shift + if b < 0x80 { + break + } + } + fieldNum := int32(wire >> 3) + wireType := int(wire & 0x7) + if wireType == 4 { + return fmt.Errorf("proto: Metadata: wiretype end group for non-group") + } + if fieldNum <= 0 { + return fmt.Errorf("proto: Metadata: illegal tag %d (wire type %d)", fieldNum, wire) + } + switch fieldNum { + case 1: + if wireType != 0 { + return fmt.Errorf("proto: wrong wireType = %d for field Type", wireType) + } + m.Type = 0 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + m.Type |= Metadata_MetricType(b&0x7F) << shift + if b < 0x80 { + break + } + } + case 3: + if wireType != 0 { + return fmt.Errorf("proto: wrong wireType = %d for field HelpRef", wireType) + } + m.HelpRef = 0 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + m.HelpRef |= uint32(b&0x7F) << shift + if b < 0x80 { + break + } + } + case 4: + if wireType != 0 { + return fmt.Errorf("proto: wrong wireType = %d for field UnitRef", wireType) + } + m.UnitRef = 0 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + m.UnitRef |= uint32(b&0x7F) << shift + if b < 0x80 { + break + } + } + default: + iNdEx = preIndex + skippy, err := protohelpers.Skip(dAtA[iNdEx:]) + if err != nil { + return err + } + if (skippy < 0) || (iNdEx+skippy) < 0 { + return protohelpers.ErrInvalidLength + } + if (iNdEx + skippy) > l { + return io.ErrUnexpectedEOF + } + m.unknownFields = append(m.unknownFields, dAtA[iNdEx:iNdEx+skippy]...) + iNdEx += skippy + } + } + + if iNdEx > l { + return io.ErrUnexpectedEOF + } + return nil +} +func (m *Histogram) UnmarshalVT(dAtA []byte) error { + l := len(dAtA) + iNdEx := 0 + for iNdEx < l { + preIndex := iNdEx + var wire uint64 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + wire |= uint64(b&0x7F) << shift + if b < 0x80 { + break + } + } + fieldNum := int32(wire >> 3) + wireType := int(wire & 0x7) + if wireType == 4 { + return fmt.Errorf("proto: Histogram: wiretype end group for non-group") + } + if fieldNum <= 0 { + return fmt.Errorf("proto: Histogram: illegal tag %d (wire type %d)", fieldNum, wire) + } + switch fieldNum { + case 1: + if wireType != 0 { + return fmt.Errorf("proto: wrong wireType = %d for field CountInt", wireType) + } + var v uint64 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + v |= uint64(b&0x7F) << shift + if b < 0x80 { + break + } + } + m.Count = &Histogram_CountInt{CountInt: v} + case 2: + if wireType != 1 { + return fmt.Errorf("proto: wrong wireType = %d for field CountFloat", wireType) + } + var v uint64 + if (iNdEx + 8) > l { + return io.ErrUnexpectedEOF + } + v = uint64(binary.LittleEndian.Uint64(dAtA[iNdEx:])) + iNdEx += 8 + m.Count = &Histogram_CountFloat{CountFloat: float64(math.Float64frombits(v))} + case 3: + if wireType != 1 { + return fmt.Errorf("proto: wrong wireType = %d for field Sum", wireType) + } + var v uint64 + if (iNdEx + 8) > l { + return io.ErrUnexpectedEOF + } + v = uint64(binary.LittleEndian.Uint64(dAtA[iNdEx:])) + iNdEx += 8 + m.Sum = float64(math.Float64frombits(v)) + case 4: + if wireType != 0 { + return fmt.Errorf("proto: wrong wireType = %d for field Schema", wireType) + } + var v int32 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + v |= int32(b&0x7F) << shift + if b < 0x80 { + break + } + } + v = int32((uint32(v) >> 1) ^ uint32(((v&1)<<31)>>31)) + m.Schema = v + case 5: + if wireType != 1 { + return fmt.Errorf("proto: wrong wireType = %d for field ZeroThreshold", wireType) + } + var v uint64 + if (iNdEx + 8) > l { + return io.ErrUnexpectedEOF + } + v = uint64(binary.LittleEndian.Uint64(dAtA[iNdEx:])) + iNdEx += 8 + m.ZeroThreshold = float64(math.Float64frombits(v)) + case 6: + if wireType != 0 { + return fmt.Errorf("proto: wrong wireType = %d for field ZeroCountInt", wireType) + } + var v uint64 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + v |= uint64(b&0x7F) << shift + if b < 0x80 { + break + } + } + m.ZeroCount = &Histogram_ZeroCountInt{ZeroCountInt: v} + case 7: + if wireType != 1 { + return fmt.Errorf("proto: wrong wireType = %d for field ZeroCountFloat", wireType) + } + var v uint64 + if (iNdEx + 8) > l { + return io.ErrUnexpectedEOF + } + v = uint64(binary.LittleEndian.Uint64(dAtA[iNdEx:])) + iNdEx += 8 + m.ZeroCount = &Histogram_ZeroCountFloat{ZeroCountFloat: float64(math.Float64frombits(v))} + case 8: + if wireType != 2 { + return fmt.Errorf("proto: wrong wireType = %d for field NegativeSpans", wireType) + } + var msglen int + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + msglen |= int(b&0x7F) << shift + if b < 0x80 { + break + } + } + if msglen < 0 { + return protohelpers.ErrInvalidLength + } + postIndex := iNdEx + msglen + if postIndex < 0 { + return protohelpers.ErrInvalidLength + } + if postIndex > l { + return io.ErrUnexpectedEOF + } + m.NegativeSpans = append(m.NegativeSpans, &BucketSpan{}) + if err := m.NegativeSpans[len(m.NegativeSpans)-1].UnmarshalVT(dAtA[iNdEx:postIndex]); err != nil { + return err + } + iNdEx = postIndex + case 9: + if wireType == 0 { + var v uint64 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + v |= uint64(b&0x7F) << shift + if b < 0x80 { + break + } + } + v = (v >> 1) ^ uint64((int64(v&1)<<63)>>63) + m.NegativeDeltas = append(m.NegativeDeltas, int64(v)) + } else if wireType == 2 { + var packedLen int + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + packedLen |= int(b&0x7F) << shift + if b < 0x80 { + break + } + } + if packedLen < 0 { + return protohelpers.ErrInvalidLength + } + postIndex := iNdEx + packedLen + if postIndex < 0 { + return protohelpers.ErrInvalidLength + } + if postIndex > l { + return io.ErrUnexpectedEOF + } + var elementCount int + var count int + for _, integer := range dAtA[iNdEx:postIndex] { + if integer < 128 { + count++ + } + } + elementCount = count + if elementCount != 0 && len(m.NegativeDeltas) == 0 { + m.NegativeDeltas = make([]int64, 0, elementCount) + } + for iNdEx < postIndex { + var v uint64 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + v |= uint64(b&0x7F) << shift + if b < 0x80 { + break + } + } + v = (v >> 1) ^ uint64((int64(v&1)<<63)>>63) + m.NegativeDeltas = append(m.NegativeDeltas, int64(v)) + } + } else { + return fmt.Errorf("proto: wrong wireType = %d for field NegativeDeltas", wireType) + } + case 10: + if wireType == 1 { + var v uint64 + if (iNdEx + 8) > l { + return io.ErrUnexpectedEOF + } + v = uint64(binary.LittleEndian.Uint64(dAtA[iNdEx:])) + iNdEx += 8 + v2 := float64(math.Float64frombits(v)) + m.NegativeCounts = append(m.NegativeCounts, v2) + } else if wireType == 2 { + var packedLen int + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + packedLen |= int(b&0x7F) << shift + if b < 0x80 { + break + } + } + if packedLen < 0 { + return protohelpers.ErrInvalidLength + } + postIndex := iNdEx + packedLen + if postIndex < 0 { + return protohelpers.ErrInvalidLength + } + if postIndex > l { + return io.ErrUnexpectedEOF + } + var elementCount int + elementCount = packedLen / 8 + if elementCount != 0 && len(m.NegativeCounts) == 0 { + m.NegativeCounts = make([]float64, 0, elementCount) + } + for iNdEx < postIndex { + var v uint64 + if (iNdEx + 8) > l { + return io.ErrUnexpectedEOF + } + v = uint64(binary.LittleEndian.Uint64(dAtA[iNdEx:])) + iNdEx += 8 + v2 := float64(math.Float64frombits(v)) + m.NegativeCounts = append(m.NegativeCounts, v2) + } + } else { + return fmt.Errorf("proto: wrong wireType = %d for field NegativeCounts", wireType) + } + case 11: + if wireType != 2 { + return fmt.Errorf("proto: wrong wireType = %d for field PositiveSpans", wireType) + } + var msglen int + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + msglen |= int(b&0x7F) << shift + if b < 0x80 { + break + } + } + if msglen < 0 { + return protohelpers.ErrInvalidLength + } + postIndex := iNdEx + msglen + if postIndex < 0 { + return protohelpers.ErrInvalidLength + } + if postIndex > l { + return io.ErrUnexpectedEOF + } + m.PositiveSpans = append(m.PositiveSpans, &BucketSpan{}) + if err := m.PositiveSpans[len(m.PositiveSpans)-1].UnmarshalVT(dAtA[iNdEx:postIndex]); err != nil { + return err + } + iNdEx = postIndex + case 12: + if wireType == 0 { + var v uint64 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + v |= uint64(b&0x7F) << shift + if b < 0x80 { + break + } + } + v = (v >> 1) ^ uint64((int64(v&1)<<63)>>63) + m.PositiveDeltas = append(m.PositiveDeltas, int64(v)) + } else if wireType == 2 { + var packedLen int + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + packedLen |= int(b&0x7F) << shift + if b < 0x80 { + break + } + } + if packedLen < 0 { + return protohelpers.ErrInvalidLength + } + postIndex := iNdEx + packedLen + if postIndex < 0 { + return protohelpers.ErrInvalidLength + } + if postIndex > l { + return io.ErrUnexpectedEOF + } + var elementCount int + var count int + for _, integer := range dAtA[iNdEx:postIndex] { + if integer < 128 { + count++ + } + } + elementCount = count + if elementCount != 0 && len(m.PositiveDeltas) == 0 { + m.PositiveDeltas = make([]int64, 0, elementCount) + } + for iNdEx < postIndex { + var v uint64 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + v |= uint64(b&0x7F) << shift + if b < 0x80 { + break + } + } + v = (v >> 1) ^ uint64((int64(v&1)<<63)>>63) + m.PositiveDeltas = append(m.PositiveDeltas, int64(v)) + } + } else { + return fmt.Errorf("proto: wrong wireType = %d for field PositiveDeltas", wireType) + } + case 13: + if wireType == 1 { + var v uint64 + if (iNdEx + 8) > l { + return io.ErrUnexpectedEOF + } + v = uint64(binary.LittleEndian.Uint64(dAtA[iNdEx:])) + iNdEx += 8 + v2 := float64(math.Float64frombits(v)) + m.PositiveCounts = append(m.PositiveCounts, v2) + } else if wireType == 2 { + var packedLen int + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + packedLen |= int(b&0x7F) << shift + if b < 0x80 { + break + } + } + if packedLen < 0 { + return protohelpers.ErrInvalidLength + } + postIndex := iNdEx + packedLen + if postIndex < 0 { + return protohelpers.ErrInvalidLength + } + if postIndex > l { + return io.ErrUnexpectedEOF + } + var elementCount int + elementCount = packedLen / 8 + if elementCount != 0 && len(m.PositiveCounts) == 0 { + m.PositiveCounts = make([]float64, 0, elementCount) + } + for iNdEx < postIndex { + var v uint64 + if (iNdEx + 8) > l { + return io.ErrUnexpectedEOF + } + v = uint64(binary.LittleEndian.Uint64(dAtA[iNdEx:])) + iNdEx += 8 + v2 := float64(math.Float64frombits(v)) + m.PositiveCounts = append(m.PositiveCounts, v2) + } + } else { + return fmt.Errorf("proto: wrong wireType = %d for field PositiveCounts", wireType) + } + case 14: + if wireType != 0 { + return fmt.Errorf("proto: wrong wireType = %d for field ResetHint", wireType) + } + m.ResetHint = 0 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + m.ResetHint |= Histogram_ResetHint(b&0x7F) << shift + if b < 0x80 { + break + } + } + case 15: + if wireType != 0 { + return fmt.Errorf("proto: wrong wireType = %d for field Timestamp", wireType) + } + m.Timestamp = 0 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + m.Timestamp |= int64(b&0x7F) << shift + if b < 0x80 { + break + } + } + case 16: + if wireType == 1 { + var v uint64 + if (iNdEx + 8) > l { + return io.ErrUnexpectedEOF + } + v = uint64(binary.LittleEndian.Uint64(dAtA[iNdEx:])) + iNdEx += 8 + v2 := float64(math.Float64frombits(v)) + m.CustomValues = append(m.CustomValues, v2) + } else if wireType == 2 { + var packedLen int + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + packedLen |= int(b&0x7F) << shift + if b < 0x80 { + break + } + } + if packedLen < 0 { + return protohelpers.ErrInvalidLength + } + postIndex := iNdEx + packedLen + if postIndex < 0 { + return protohelpers.ErrInvalidLength + } + if postIndex > l { + return io.ErrUnexpectedEOF + } + var elementCount int + elementCount = packedLen / 8 + if elementCount != 0 && len(m.CustomValues) == 0 { + m.CustomValues = make([]float64, 0, elementCount) + } + for iNdEx < postIndex { + var v uint64 + if (iNdEx + 8) > l { + return io.ErrUnexpectedEOF + } + v = uint64(binary.LittleEndian.Uint64(dAtA[iNdEx:])) + iNdEx += 8 + v2 := float64(math.Float64frombits(v)) + m.CustomValues = append(m.CustomValues, v2) + } + } else { + return fmt.Errorf("proto: wrong wireType = %d for field CustomValues", wireType) + } + default: + iNdEx = preIndex + skippy, err := protohelpers.Skip(dAtA[iNdEx:]) + if err != nil { + return err + } + if (skippy < 0) || (iNdEx+skippy) < 0 { + return protohelpers.ErrInvalidLength + } + if (iNdEx + skippy) > l { + return io.ErrUnexpectedEOF + } + m.unknownFields = append(m.unknownFields, dAtA[iNdEx:iNdEx+skippy]...) + iNdEx += skippy + } + } + + if iNdEx > l { + return io.ErrUnexpectedEOF + } + return nil +} +func (m *BucketSpan) UnmarshalVT(dAtA []byte) error { + l := len(dAtA) + iNdEx := 0 + for iNdEx < l { + preIndex := iNdEx + var wire uint64 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + wire |= uint64(b&0x7F) << shift + if b < 0x80 { + break + } + } + fieldNum := int32(wire >> 3) + wireType := int(wire & 0x7) + if wireType == 4 { + return fmt.Errorf("proto: BucketSpan: wiretype end group for non-group") + } + if fieldNum <= 0 { + return fmt.Errorf("proto: BucketSpan: illegal tag %d (wire type %d)", fieldNum, wire) + } + switch fieldNum { + case 1: + if wireType != 0 { + return fmt.Errorf("proto: wrong wireType = %d for field Offset", wireType) + } + var v int32 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + v |= int32(b&0x7F) << shift + if b < 0x80 { + break + } + } + v = int32((uint32(v) >> 1) ^ uint32(((v&1)<<31)>>31)) + m.Offset = v + case 2: + if wireType != 0 { + return fmt.Errorf("proto: wrong wireType = %d for field Length", wireType) + } + m.Length = 0 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return protohelpers.ErrIntOverflow + } + if iNdEx >= l { + return io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + m.Length |= uint32(b&0x7F) << shift + if b < 0x80 { + break + } + } + default: + iNdEx = preIndex + skippy, err := protohelpers.Skip(dAtA[iNdEx:]) + if err != nil { + return err + } + if (skippy < 0) || (iNdEx+skippy) < 0 { + return protohelpers.ErrInvalidLength + } + if (iNdEx + skippy) > l { + return io.ErrUnexpectedEOF + } + m.unknownFields = append(m.unknownFields, dAtA[iNdEx:iNdEx+skippy]...) + iNdEx += skippy + } + } + + if iNdEx > l { + return io.ErrUnexpectedEOF + } + return nil +} diff --git a/api/prometheus/v1/remote/remote_api.go b/api/prometheus/v1/remote/remote_api.go new file mode 100644 index 0000000..ed4671b --- /dev/null +++ b/api/prometheus/v1/remote/remote_api.go @@ -0,0 +1,376 @@ +// Copyright 2024 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package remote implements bindings for Prometheus Remote APIs. +package remote + +import ( + "bytes" + "context" + "errors" + "fmt" + "io" + "log/slog" + "net/http" + "strconv" + "strings" + "time" + + "github.com/klauspost/compress/snappy" + "google.golang.org/protobuf/proto" + + "github.com/prometheus/client_golang/api" + "github.com/prometheus/client_golang/internal/github.com/efficientgo/core/backoff" +) + +// API is a client for Prometheus Remote Protocols. +// NOTE(bwplotka): Only https://prometheus.io/docs/specs/remote_write_spec_2_0/ is currently implemented, +// read protocols to be implemented if there will be a demand. +type API struct { + client api.Client + opts apiOpts + + reqBuf, comprBuf []byte +} + +// APIOption represents a remote API option. +type APIOption func(o *apiOpts) error + +// TODO(bwplotka): Add "too old sample" handling one day. +type apiOpts struct { + logger *slog.Logger + backoff backoff.Config + compression Compression + retryOnRateLimit bool +} + +var defaultAPIOpts = &apiOpts{ + backoff: backoff.Config{ + Min: 1 * time.Second, + Max: 10 * time.Second, + MaxRetries: 10, + }, + // Hardcoded for now. + retryOnRateLimit: true, + compression: SnappyBlockCompression, +} + +// WithAPILogger returns APIOption that allows providing slog logger. +// By default, nothing is logged. +func WithAPILogger(logger *slog.Logger) APIOption { + return func(o *apiOpts) error { + o.logger = logger + return nil + } +} + +type nopSlogHandler struct{} + +func (n nopSlogHandler) Enabled(context.Context, slog.Level) bool { return false } +func (n nopSlogHandler) Handle(context.Context, slog.Record) error { return nil } +func (n nopSlogHandler) WithAttrs([]slog.Attr) slog.Handler { return n } +func (n nopSlogHandler) WithGroup(string) slog.Handler { return n } + +// NewAPI returns a new API for the clients of Remote Write Protocol. +// +// It is not safe to use the returned API from multiple goroutines, create a +// separate *API for each goroutine. +func NewAPI(c api.Client, opts ...APIOption) (*API, error) { + o := *defaultAPIOpts + for _, opt := range opts { + if err := opt(&o); err != nil { + return nil, err + } + } + + if o.logger == nil { + o.logger = slog.New(nopSlogHandler{}) + } + + return &API{ + client: c, + opts: o, + }, nil +} + +type retryableError struct { + error + retryAfter time.Duration +} + +func (r retryableError) RetryAfter() time.Duration { + return r.retryAfter +} + +type vtProtoEnabled interface { + SizeVT() int + MarshalToSizedBufferVT(dAtA []byte) (int, error) +} + +// Write writes given, non-empty, protobuf message to a remote storage. +// The https://github.com/planetscale/vtprotobuf methods will be used if your msg +// supports those (e.g. SizeVT() and MarshalToSizedBufferVT(...)), for efficiency. +func (r *API) Write(ctx context.Context, msg proto.Message) (_ WriteResponseStats, err error) { + // Detect content-type. + cType := WriteProtoFullName(proto.MessageName(msg)) + if err := cType.Validate(); err != nil { + return WriteResponseStats{}, err + } + + // Encode the payload. + if emsg, ok := msg.(vtProtoEnabled); ok { + // Use optimized vtprotobuf if supported. + size := emsg.SizeVT() + if len(r.reqBuf) < size { + r.reqBuf = make([]byte, size) + } + if _, err := emsg.MarshalToSizedBufferVT(r.reqBuf[:size]); err != nil { + return WriteResponseStats{}, fmt.Errorf("encoding request %w", err) + } + } else { + // Generic proto. + r.reqBuf = r.reqBuf[:0] + r.reqBuf, err = (proto.MarshalOptions{}).MarshalAppend(r.reqBuf, msg) + if err != nil { + return WriteResponseStats{}, fmt.Errorf("encoding request %w", err) + } + } + + payload, err := compressPayload(&r.comprBuf, r.opts.compression, r.reqBuf) + if err != nil { + return WriteResponseStats{}, fmt.Errorf("compressing %w", err) + } + + // Since we retry writes we need to track the total amount of accepted data + // across the various attempts. + accumulatedStats := WriteResponseStats{} + + b := backoff.New(ctx, r.opts.backoff) + for { + rs, err := r.attemptWrite(ctx, r.opts.compression, cType, payload, b.NumRetries()) + accumulatedStats = accumulatedStats.Add(rs) + if err == nil { + // Check the case mentioned in PRW 2.0. + // https://prometheus.io/docs/specs/remote_write_spec_2_0/#required-written-response-headers. + if cType == WriteProtoFullNameV2 && !accumulatedStats.Confirmed && accumulatedStats.NoDataWritten() { + // TODO(bwplotka): Allow users to disable this check or provide their stats for us to know if it's empty. + return accumulatedStats, fmt.Errorf("sent v2 request; "+ + "got 2xx, but PRW 2.0 response header statistics indicate %v samples, %v histograms "+ + "and %v exemplars were accepted; assumining failure e.g. the target only supports "+ + "PRW 1.0 prometheus.WriteRequest, but does not check the Content-Type header correctly", + accumulatedStats.Samples, accumulatedStats.Histograms, accumulatedStats.Exemplars, + ) + } + // Success! + // TODO(bwplotka): Debug log with retry summary? + return accumulatedStats, nil + } + + var retryableErr retryableError + if !errors.As(err, &retryableErr) { + // TODO(bwplotka): More context in the error e.g. about retries. + return accumulatedStats, err + } + + if !b.Ongoing() { + // TODO(bwplotka): More context in the error e.g. about retries. + return accumulatedStats, err + } + + backoffDelay := b.NextDelay() + retryableErr.RetryAfter() + r.opts.logger.Error("failed to send remote write request; retrying after backoff", "err", err, "backoff", backoffDelay) + select { + case <-ctx.Done(): + // TODO(bwplotka): More context in the error e.g. about retries. + return WriteResponseStats{}, ctx.Err() + case <-time.After(backoffDelay): + // Retry. + } + } +} + +func compressPayload(tmpbuf *[]byte, enc Compression, inp []byte) (compressed []byte, _ error) { + switch enc { + case SnappyBlockCompression: + compressed = snappy.Encode(*tmpbuf, inp) + if n := snappy.MaxEncodedLen(len(inp)); n > len(*tmpbuf) { + // grow the buffer for the next time. + *tmpbuf = make([]byte, n) + } + return compressed, nil + default: + return compressed, fmt.Errorf("unknown compression scheme [%v]", enc) + } +} + +func (r *API) attemptWrite(ctx context.Context, compr Compression, proto WriteProtoFullName, payload []byte, attempt int) (WriteResponseStats, error) { + u := r.client.URL("api/v1/write", nil) + req, err := http.NewRequest(http.MethodPost, u.String(), bytes.NewReader(payload)) + if err != nil { + // Errors from NewRequest are from unparsable URLs, so are not + // recoverable. + return WriteResponseStats{}, err + } + + req.Header.Add("Content-Encoding", string(compr)) + req.Header.Set("Content-Type", contentTypeHeader(proto)) + if proto == WriteProtoFullNameV1 { + // Compatibility mode for 1.0. + req.Header.Set(versionHeader, version1HeaderValue) + } else { + req.Header.Set(versionHeader, version20HeaderValue) + } + + if attempt > 0 { + req.Header.Set("Retry-Attempt", strconv.Itoa(attempt)) + } + + resp, body, err := r.client.Do(ctx, req) + if err != nil { + // Errors from Client.Do are likely network errors, so recoverable. + return WriteResponseStats{}, retryableError{err, 0} + } + + rs, err := parseWriteResponseStats(resp) + if err != nil { + r.opts.logger.Warn("parsing rw write statistics failed; partial or no stats", "err", err) + } + + if resp.StatusCode/100 == 2 { + return rs, nil + } + + err = fmt.Errorf("server returned HTTP status %s: %s", resp.Status, body) + if resp.StatusCode/100 == 5 || + (r.opts.retryOnRateLimit && resp.StatusCode == http.StatusTooManyRequests) { + return rs, retryableError{err, retryAfterDuration(resp.Header.Get("Retry-After"))} + } + return rs, err +} + +// retryAfterDuration returns the duration for the Retry-After header. In case of any errors, it +// returns 0 as if the header was never supplied. +func retryAfterDuration(t string) time.Duration { + parsedDuration, err := time.Parse(http.TimeFormat, t) + if err == nil { + return time.Until(parsedDuration) + } + // The duration can be in seconds. + d, err := strconv.Atoi(t) + if err != nil { + return 0 + } + return time.Duration(d) * time.Second +} + +// writeStorage represents the storage for RemoteWriteHandler. +// This interface is intentionally private due its experimental state. +type writeStorage interface { + Store(ctx context.Context, proto WriteProtoFullName, serializedRequest []byte) (_ WriteResponseStats, code int, _ error) +} + +type handler struct { + logger *slog.Logger + store writeStorage +} + +// NewRemoteWriteHandler returns HTTP handler that receives Remote Write 2.0 +// protocol https://prometheus.io/docs/specs/remote_write_spec_2_0/. +func NewRemoteWriteHandler(logger *slog.Logger, store writeStorage) http.Handler { + return &handler{logger: logger, store: store} +} + +func parseProtoMsg(contentType string) (WriteProtoFullName, error) { + contentType = strings.TrimSpace(contentType) + + parts := strings.Split(contentType, ";") + if parts[0] != appProtoContentType { + return "", fmt.Errorf("expected %v as the first (media) part, got %v content-type", appProtoContentType, contentType) + } + // Parse potential https://www.rfc-editor.org/rfc/rfc9110#parameter + for _, p := range parts[1:] { + pair := strings.Split(p, "=") + if len(pair) != 2 { + return "", fmt.Errorf("as per https://www.rfc-editor.org/rfc/rfc9110#parameter expected parameters to be key-values, got %v in %v content-type", p, contentType) + } + if pair[0] == "proto" { + ret := WriteProtoFullName(pair[1]) + if err := ret.Validate(); err != nil { + return "", fmt.Errorf("got %v content type; %w", contentType, err) + } + return ret, nil + } + } + // No "proto=" parameter, assuming v1. + return WriteProtoFullNameV1, nil +} + +func (h *handler) ServeHTTP(w http.ResponseWriter, r *http.Request) { + contentType := r.Header.Get("Content-Type") + if contentType == "" { + // Don't break yolo 1.0 clients if not needed. + // We could give http.StatusUnsupportedMediaType, but let's assume 1.0 message by default. + contentType = appProtoContentType + } + + msgType, err := parseProtoMsg(contentType) + if err != nil { + h.logger.Error("Error decoding remote write request", "err", err) + http.Error(w, err.Error(), http.StatusUnsupportedMediaType) + return + } + + enc := r.Header.Get("Content-Encoding") + if enc == "" { + // Don't break yolo 1.0 clients if not needed. This is similar to what we did + // before 2.0: https://github.com/prometheus/prometheus/blob/d78253319daa62c8f28ed47e40bafcad2dd8b586/storage/remote/write_handler.go#L62 + // We could give http.StatusUnsupportedMediaType, but let's assume snappy by default. + } else if enc != string(SnappyBlockCompression) { + err := fmt.Errorf("%v encoding (compression) is not accepted by this server; only %v is acceptable", enc, SnappyBlockCompression) + h.logger.Error("Error decoding remote write request", "err", err) + http.Error(w, err.Error(), http.StatusUnsupportedMediaType) + } + + // Read the request body. + body, err := io.ReadAll(r.Body) + if err != nil { + h.logger.Error("Error decoding remote write request", "err", err.Error()) + http.Error(w, err.Error(), http.StatusBadRequest) + return + } + + decompressed, err := snappy.Decode(nil, body) + if err != nil { + // TODO(bwplotka): Add more context to responded error? + h.logger.Error("Error decompressing remote write request", "err", err.Error()) + http.Error(w, err.Error(), http.StatusBadRequest) + return + } + + stats, code, storeErr := h.store.Store(r.Context(), msgType, decompressed) + + // Set required X-Prometheus-Remote-Write-Written-* response headers, in all cases. + stats.SetHeaders(w) + + if storeErr != nil { + if code == 0 { + code = http.StatusInternalServerError + } + if code/5 == 100 { // 5xx + h.logger.Error("Error while remote writing the v2 request", "err", storeErr.Error()) + } + http.Error(w, storeErr.Error(), code) + return + } + w.WriteHeader(http.StatusNoContent) +} diff --git a/api/prometheus/v1/remote/remote_api_test.go b/api/prometheus/v1/remote/remote_api_test.go new file mode 100644 index 0000000..0ceb519 --- /dev/null +++ b/api/prometheus/v1/remote/remote_api_test.go @@ -0,0 +1,157 @@ +// Copyright 2024 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package remote + +import ( + "context" + "log/slog" + "net/http" + "net/http/httptest" + "testing" + "time" + + "github.com/google/go-cmp/cmp" + "github.com/prometheus/common/model" + "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/testing/protocmp" + + "github.com/prometheus/client_golang/api" + writev2 "github.com/prometheus/client_golang/api/prometheus/v1/remote/genproto/v2" +) + +func TestRetryAfterDuration(t *testing.T) { + tc := []struct { + name string + tInput string + expected model.Duration + }{ + { + name: "seconds", + tInput: "120", + expected: model.Duration(time.Second * 120), + }, + { + name: "date-time default", + tInput: time.RFC1123, // Expected layout is http.TimeFormat, hence an error. + expected: 0, + }, + { + name: "retry-after not provided", + tInput: "", // Expected layout is http.TimeFormat, hence an error. + expected: 0, + }, + } + for _, c := range tc { + if got := retryAfterDuration(c.tInput); got != time.Duration(c.expected) { + t.Fatal("expected", c.expected, "got", got) + } + } +} + +type mockStorage struct { + v2Reqs []*writev2.Request + protos []WriteProtoFullName + + mockCode *int + mockErr error +} + +func (m *mockStorage) Store(_ context.Context, msgFullName WriteProtoFullName, serializedRequest []byte) (w WriteResponseStats, code int, _ error) { + if m.mockErr != nil { + return w, *m.mockCode, m.mockErr + } + + // This test expects v2 only. + r := &writev2.Request{} + if err := proto.Unmarshal(serializedRequest, r); err != nil { + return WriteResponseStats{}, http.StatusInternalServerError, err + } + m.v2Reqs = append(m.v2Reqs, r) + m.protos = append(m.protos, msgFullName) + return stats(r), http.StatusOK, nil +} + +func testV2() *writev2.Request { + s := writev2.NewSymbolTable() + return &writev2.Request{ + Timeseries: []*writev2.TimeSeries{ + { + Metadata: &writev2.Metadata{ + Type: writev2.Metadata_METRIC_TYPE_COUNTER, + HelpRef: s.Symbolize("My lovely counter"), + }, + LabelsRefs: s.SymbolizeLabels([]string{"__name__", "metric1", "foo", "bar1"}, nil), + Samples: []*writev2.Sample{ + {Value: 1.1, Timestamp: 1214141}, + {Value: 1.5, Timestamp: 1214180}, + }, + }, + { + Metadata: &writev2.Metadata{ + Type: writev2.Metadata_METRIC_TYPE_COUNTER, + HelpRef: s.Symbolize("My lovely counter"), + }, + LabelsRefs: s.SymbolizeLabels([]string{"__name__", "metric1", "foo", "bar2"}, nil), + Samples: []*writev2.Sample{ + {Value: 1231311, Timestamp: 1214141}, + {Value: 1310001, Timestamp: 1214180}, + }, + }, + }, + } +} + +func stats(req *writev2.Request) (s WriteResponseStats) { + s.Confirmed = true + for _, ts := range req.Timeseries { + s.Samples += len(ts.Samples) + s.Histograms += len(ts.Histograms) + s.Exemplars += len(ts.Exemplars) + } + return s +} + +func TestRemoteAPI_Write_WithHandler(t *testing.T) { + tLogger := slog.Default() + mStore := &mockStorage{} + srv := httptest.NewServer(NewRemoteWriteHandler(tLogger, mStore)) + t.Cleanup(srv.Close) + + cl, err := api.NewClient(api.Config{ + Address: srv.URL, + RoundTripper: srv.Client().Transport, + }) + if err != nil { + t.Fatal(err) + } + client, err := NewAPI(cl, WithAPILogger(tLogger)) + if err != nil { + t.Fatal(err) + } + + req := testV2() + s, err := client.Write(context.Background(), req) + if err != nil { + t.Fatal(err) + } + if diff := cmp.Diff(stats(req), s); diff != "" { + t.Fatal("unexpected stats", diff) + } + if len(mStore.v2Reqs) != 1 { + t.Fatal("expected 1 request stored, got", mStore.v2Reqs) + } + if diff := cmp.Diff(req, mStore.v2Reqs[0], protocmp.Transform()); diff != "" { + t.Fatal("unexpected request received", diff) + } +} diff --git a/api/prometheus/v1/remote/remote_headers.go b/api/prometheus/v1/remote/remote_headers.go new file mode 100644 index 0000000..e734495 --- /dev/null +++ b/api/prometheus/v1/remote/remote_headers.go @@ -0,0 +1,178 @@ +// Copyright 2024 The Prometheus Authors +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package remote + +import ( + "errors" + "fmt" + "net/http" + "strconv" + "strings" + + "google.golang.org/protobuf/reflect/protoreflect" +) + +const ( + versionHeader = "X-Prometheus-Remote-Write-Version" + version1HeaderValue = "0.1.0" + version20HeaderValue = "2.0.0" + appProtoContentType = "application/x-protobuf" +) + +// Compression represents the encoding. Currently remote storage supports only +// one, but we experiment with more, thus leaving the compression scaffolding +// for now. +type Compression string + +const ( + // SnappyBlockCompression represents https://github.com/google/snappy/blob/2c94e11145f0b7b184b831577c93e5a41c4c0346/format_description.txt + SnappyBlockCompression Compression = "snappy" +) + +// WriteProtoFullName represents the fully qualified name of the protobuf message +// to use in Remote write 1.0 and 2.0 protocols. +// See https://prometheus.io/docs/specs/remote_write_spec_2_0/#protocol. +type WriteProtoFullName protoreflect.FullName + +const ( + // WriteProtoFullNameV1 represents the `prometheus.WriteRequest` protobuf + // message introduced in the https://prometheus.io/docs/specs/remote_write_spec/. + // DEPRECATED: Use WriteProtoFullNameV2 instead. + WriteProtoFullNameV1 WriteProtoFullName = "prometheus.WriteRequest" + // WriteProtoFullNameV2 represents the `io.prometheus.write.v2.Request` protobuf + // message introduced in https://prometheus.io/docs/specs/remote_write_spec_2_0/ + WriteProtoFullNameV2 WriteProtoFullName = "io.prometheus.write.v2.Request" +) + +// Validate returns error if the given reference for the protobuf message is not supported. +func (n WriteProtoFullName) Validate() error { + switch n { + case WriteProtoFullNameV1, WriteProtoFullNameV2: + return nil + default: + return fmt.Errorf("unknown remote write protobuf message %v, supported: %v", n, protoMsgs{WriteProtoFullNameV1, WriteProtoFullNameV2}.String()) + } +} + +type protoMsgs []WriteProtoFullName + +func (m protoMsgs) Strings() []string { + ret := make([]string, 0, len(m)) + for _, typ := range m { + ret = append(ret, string(typ)) + } + return ret +} + +func (m protoMsgs) String() string { + return strings.Join(m.Strings(), ", ") +} + +var contentTypeHeaders = map[WriteProtoFullName]string{ + WriteProtoFullNameV1: appProtoContentType, // Also application/x-protobuf;proto=prometheus.WriteRequest but simplified for compatibility with 1.x spec. + WriteProtoFullNameV2: appProtoContentType + ";proto=io.prometheus.write.v2.Request", +} + +// ContentTypeHeader returns content type header value for the given proto message +// or empty string for unknown proto message. +func contentTypeHeader(m WriteProtoFullName) string { + return contentTypeHeaders[m] +} + +const ( + writtenSamplesHeader = "X-Prometheus-Remote-Write-Samples-Written" + writtenHistogramsHeader = "X-Prometheus-Remote-Write-Histograms-Written" + writtenExemplarsHeader = "X-Prometheus-Remote-Write-Exemplars-Written" +) + +// WriteResponseStats represents the response, remote write statistics. +type WriteResponseStats struct { + // Samples represents X-Prometheus-Remote-Write-Written-Samples + Samples int + // Histograms represents X-Prometheus-Remote-Write-Written-Histograms + Histograms int + // Exemplars represents X-Prometheus-Remote-Write-Written-Exemplars + Exemplars int + + // Confirmed means we can trust those statistics from the point of view + // of the PRW 2.0 spec. When parsed from headers, it means we got at least one + // response header from the Receiver to confirm those numbers, meaning it must + // be at least 2.0 Receiver. See ParseWriteResponseStats for details. + Confirmed bool +} + +// NoDataWritten returns true if statistics indicate no data was written. +func (s WriteResponseStats) NoDataWritten() bool { + return (s.Samples + s.Histograms + s.Exemplars) == 0 +} + +// AllSamples returns both float and histogram sample numbers. +func (s WriteResponseStats) AllSamples() int { + return s.Samples + s.Histograms +} + +// Add returns the sum of this WriteResponseStats plus the given WriteResponseStats. +func (s WriteResponseStats) Add(rs WriteResponseStats) WriteResponseStats { + s.Confirmed = rs.Confirmed + s.Samples += rs.Samples + s.Histograms += rs.Histograms + s.Exemplars += rs.Exemplars + return s +} + +// SetHeaders sets response headers in a given response writer. +// Make sure to use it before http.ResponseWriter.WriteHeader and .Write. +func (s WriteResponseStats) SetHeaders(w http.ResponseWriter) { + h := w.Header() + h.Set(writtenSamplesHeader, strconv.Itoa(s.Samples)) + h.Set(writtenHistogramsHeader, strconv.Itoa(s.Histograms)) + h.Set(writtenExemplarsHeader, strconv.Itoa(s.Exemplars)) +} + +// parseWriteResponseStats returns WriteResponseStats parsed from the response headers. +// +// As per 2.0 spec, missing header means 0. However, abrupt HTTP errors, 1.0 Receivers +// or buggy 2.0 Receivers might result in no response headers specified and that +// might NOT necessarily mean nothing was written. To represent that we set +// s.Confirmed = true only when see at least on response header. +// +// Error is returned when any of the header fails to parse as int64. +func parseWriteResponseStats(r *http.Response) (s WriteResponseStats, err error) { + var ( + errs []error + h = r.Header + ) + if v := h.Get(writtenSamplesHeader); v != "" { // Empty means zero. + s.Confirmed = true + if s.Samples, err = strconv.Atoi(v); err != nil { + s.Samples = 0 + errs = append(errs, err) + } + } + if v := h.Get(writtenHistogramsHeader); v != "" { // Empty means zero. + s.Confirmed = true + if s.Histograms, err = strconv.Atoi(v); err != nil { + s.Histograms = 0 + errs = append(errs, err) + } + } + if v := h.Get(writtenExemplarsHeader); v != "" { // Empty means zero. + s.Confirmed = true + if s.Exemplars, err = strconv.Atoi(v); err != nil { + s.Exemplars = 0 + errs = append(errs, err) + } + } + return s, errors.Join(errs...) +} diff --git a/internal/github.com/efficientgo/core/backoff/backoff.go b/internal/github.com/efficientgo/core/backoff/backoff.go new file mode 100644 index 0000000..53b8390 --- /dev/null +++ b/internal/github.com/efficientgo/core/backoff/backoff.go @@ -0,0 +1,114 @@ +// Copyright (c) The EfficientGo Authors. +// Licensed under the Apache License 2.0. + +// Initially copied from Cortex project. + +// Package backoff implements backoff timers which increases wait time on every retry, incredibly useful +// in distributed system timeout functionalities. +package backoff + +import ( + "context" + "fmt" + "math/rand" + "time" +) + +// Config configures a Backoff. +type Config struct { + Min time.Duration `yaml:"min_period"` // Start backoff at this level + Max time.Duration `yaml:"max_period"` // Increase exponentially to this level + MaxRetries int `yaml:"max_retries"` // Give up after this many; zero means infinite retries +} + +// Backoff implements exponential backoff with randomized wait times. +type Backoff struct { + cfg Config + ctx context.Context + numRetries int + nextDelayMin time.Duration + nextDelayMax time.Duration +} + +// New creates a Backoff object. Pass a Context that can also terminate the operation. +func New(ctx context.Context, cfg Config) *Backoff { + return &Backoff{ + cfg: cfg, + ctx: ctx, + nextDelayMin: cfg.Min, + nextDelayMax: doubleDuration(cfg.Min, cfg.Max), + } +} + +// Reset the Backoff back to its initial condition. +func (b *Backoff) Reset() { + b.numRetries = 0 + b.nextDelayMin = b.cfg.Min + b.nextDelayMax = doubleDuration(b.cfg.Min, b.cfg.Max) +} + +// Ongoing returns true if caller should keep going. +func (b *Backoff) Ongoing() bool { + // Stop if Context has errored or max retry count is exceeded. + return b.ctx.Err() == nil && (b.cfg.MaxRetries == 0 || b.numRetries < b.cfg.MaxRetries) +} + +// Err returns the reason for terminating the backoff, or nil if it didn't terminate. +func (b *Backoff) Err() error { + if b.ctx.Err() != nil { + return b.ctx.Err() + } + if b.cfg.MaxRetries != 0 && b.numRetries >= b.cfg.MaxRetries { + return fmt.Errorf("terminated after %d retries", b.numRetries) + } + return nil +} + +// NumRetries returns the number of retries so far. +func (b *Backoff) NumRetries() int { + return b.numRetries +} + +// Wait sleeps for the backoff time then increases the retry count and backoff time. +// Returns immediately if Context is terminated. +func (b *Backoff) Wait() { + // Increase the number of retries and get the next delay. + sleepTime := b.NextDelay() + + if b.Ongoing() { + select { + case <-b.ctx.Done(): + case <-time.After(sleepTime): + } + } +} + +func (b *Backoff) NextDelay() time.Duration { + b.numRetries++ + + // Handle the edge case the min and max have the same value + // (or due to some misconfig max is < min). + if b.nextDelayMin >= b.nextDelayMax { + return b.nextDelayMin + } + + // Add a jitter within the next exponential backoff range. + sleepTime := b.nextDelayMin + time.Duration(rand.Int63n(int64(b.nextDelayMax-b.nextDelayMin))) + + // Apply the exponential backoff to calculate the next jitter + // range, unless we've already reached the max. + if b.nextDelayMax < b.cfg.Max { + b.nextDelayMin = doubleDuration(b.nextDelayMin, b.cfg.Max) + b.nextDelayMax = doubleDuration(b.nextDelayMax, b.cfg.Max) + } + + return sleepTime +} + +func doubleDuration(value, maxValue time.Duration) time.Duration { + value = value * 2 + if value <= maxValue { + return value + } + return maxValue +} diff --git a/internal/github.com/efficientgo/core/backoff/backoff_test.go b/internal/github.com/efficientgo/core/backoff/backoff_test.go new file mode 100644 index 0000000..e7a5310 --- /dev/null +++ b/internal/github.com/efficientgo/core/backoff/backoff_test.go @@ -0,0 +1,108 @@ +// Copyright (c) The EfficientGo Authors. +// Licensed under the Apache License 2.0. + +// Initially copied from Cortex project. + +package backoff + +import ( + "context" + "testing" + "time" +) + +func TestBackoff_NextDelay(t *testing.T) { + t.Parallel() + + tests := map[string]struct { + minBackoff time.Duration + maxBackoff time.Duration + expectedRanges [][]time.Duration + }{ + "exponential backoff with jitter honoring min and max": { + minBackoff: 100 * time.Millisecond, + maxBackoff: 10 * time.Second, + expectedRanges: [][]time.Duration{ + {100 * time.Millisecond, 200 * time.Millisecond}, + {200 * time.Millisecond, 400 * time.Millisecond}, + {400 * time.Millisecond, 800 * time.Millisecond}, + {800 * time.Millisecond, 1600 * time.Millisecond}, + {1600 * time.Millisecond, 3200 * time.Millisecond}, + {3200 * time.Millisecond, 6400 * time.Millisecond}, + {6400 * time.Millisecond, 10000 * time.Millisecond}, + {6400 * time.Millisecond, 10000 * time.Millisecond}, + }, + }, + "exponential backoff with max equal to the end of a range": { + minBackoff: 100 * time.Millisecond, + maxBackoff: 800 * time.Millisecond, + expectedRanges: [][]time.Duration{ + {100 * time.Millisecond, 200 * time.Millisecond}, + {200 * time.Millisecond, 400 * time.Millisecond}, + {400 * time.Millisecond, 800 * time.Millisecond}, + {400 * time.Millisecond, 800 * time.Millisecond}, + }, + }, + "exponential backoff with max equal to the end of a range + 1": { + minBackoff: 100 * time.Millisecond, + maxBackoff: 801 * time.Millisecond, + expectedRanges: [][]time.Duration{ + {100 * time.Millisecond, 200 * time.Millisecond}, + {200 * time.Millisecond, 400 * time.Millisecond}, + {400 * time.Millisecond, 800 * time.Millisecond}, + {800 * time.Millisecond, 801 * time.Millisecond}, + {800 * time.Millisecond, 801 * time.Millisecond}, + }, + }, + "exponential backoff with max equal to the end of a range - 1": { + minBackoff: 100 * time.Millisecond, + maxBackoff: 799 * time.Millisecond, + expectedRanges: [][]time.Duration{ + {100 * time.Millisecond, 200 * time.Millisecond}, + {200 * time.Millisecond, 400 * time.Millisecond}, + {400 * time.Millisecond, 799 * time.Millisecond}, + {400 * time.Millisecond, 799 * time.Millisecond}, + }, + }, + "min backoff is equal to max": { + minBackoff: 100 * time.Millisecond, + maxBackoff: 100 * time.Millisecond, + expectedRanges: [][]time.Duration{ + {100 * time.Millisecond, 100 * time.Millisecond}, + {100 * time.Millisecond, 100 * time.Millisecond}, + {100 * time.Millisecond, 100 * time.Millisecond}, + }, + }, + "min backoff is greater then max": { + minBackoff: 200 * time.Millisecond, + maxBackoff: 100 * time.Millisecond, + expectedRanges: [][]time.Duration{ + {200 * time.Millisecond, 200 * time.Millisecond}, + {200 * time.Millisecond, 200 * time.Millisecond}, + {200 * time.Millisecond, 200 * time.Millisecond}, + }, + }, + } + + for testName, testData := range tests { + testData := testData + + t.Run(testName, func(t *testing.T) { + t.Parallel() + + b := New(context.Background(), Config{ + Min: testData.minBackoff, + Max: testData.maxBackoff, + MaxRetries: len(testData.expectedRanges), + }) + + for _, expectedRange := range testData.expectedRanges { + delay := b.NextDelay() + + if delay < expectedRange[0] || delay > expectedRange[1] { + t.Errorf("%d expected to be within %d and %d", delay, expectedRange[0], expectedRange[1]) + } + } + }) + } +} diff --git a/internal/github.com/planetscale/vtprotobuf/protohelpers/protohelpers.go b/internal/github.com/planetscale/vtprotobuf/protohelpers/protohelpers.go new file mode 100644 index 0000000..95cc9f4 --- /dev/null +++ b/internal/github.com/planetscale/vtprotobuf/protohelpers/protohelpers.go @@ -0,0 +1,124 @@ +// Copyright (c) 2022 PlanetScale Inc. All rights reserved. + +// Package protohelpers provides helper functions for encoding and decoding protobuf messages. +// The spec can be found at https://protobuf.dev/programming-guides/encoding/. +package protohelpers + +import ( + "fmt" + "io" + "math/bits" +) + +var ( + // ErrInvalidLength is returned when decoding a negative length. + ErrInvalidLength = fmt.Errorf("proto: negative length found during unmarshaling") + // ErrIntOverflow is returned when decoding a varint representation of an integer that overflows 64 bits. + ErrIntOverflow = fmt.Errorf("proto: integer overflow") + // ErrUnexpectedEndOfGroup is returned when decoding a group end without a corresponding group start. + ErrUnexpectedEndOfGroup = fmt.Errorf("proto: unexpected end of group") +) + +// EncodeVarint encodes a uint64 into a varint-encoded byte slice and returns the offset of the encoded value. +// The provided offset is the offset after the last byte of the encoded value. +func EncodeVarint(dAtA []byte, offset int, v uint64) int { + offset -= SizeOfVarint(v) + base := offset + for v >= 1<<7 { + dAtA[offset] = uint8(v&0x7f | 0x80) + v >>= 7 + offset++ + } + dAtA[offset] = uint8(v) + return base +} + +// SizeOfVarint returns the size of the varint-encoded value. +func SizeOfVarint(x uint64) (n int) { + return (bits.Len64(x|1) + 6) / 7 +} + +// SizeOfZigzag returns the size of the zigzag-encoded value. +func SizeOfZigzag(x uint64) (n int) { + return SizeOfVarint((x << 1) ^ uint64(int64(x)>>63)) +} + +// Skip the first record of the byte slice and return the offset of the next record. +func Skip(dAtA []byte) (n int, err error) { + l := len(dAtA) + iNdEx := 0 + depth := 0 + for iNdEx < l { + var wire uint64 + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return 0, ErrIntOverflow + } + if iNdEx >= l { + return 0, io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + wire |= (uint64(b) & 0x7F) << shift + if b < 0x80 { + break + } + } + wireType := int(wire & 0x7) + switch wireType { + case 0: + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return 0, ErrIntOverflow + } + if iNdEx >= l { + return 0, io.ErrUnexpectedEOF + } + iNdEx++ + if dAtA[iNdEx-1] < 0x80 { + break + } + } + case 1: + iNdEx += 8 + case 2: + var length int + for shift := uint(0); ; shift += 7 { + if shift >= 64 { + return 0, ErrIntOverflow + } + if iNdEx >= l { + return 0, io.ErrUnexpectedEOF + } + b := dAtA[iNdEx] + iNdEx++ + length |= (int(b) & 0x7F) << shift + if b < 0x80 { + break + } + } + if length < 0 { + return 0, ErrInvalidLength + } + iNdEx += length + case 3: + depth++ + case 4: + if depth == 0 { + return 0, ErrUnexpectedEndOfGroup + } + depth-- + case 5: + iNdEx += 4 + default: + return 0, fmt.Errorf("proto: illegal wireType %d", wireType) + } + if iNdEx < 0 { + return 0, ErrInvalidLength + } + if depth == 0 { + return iNdEx, nil + } + } + return 0, io.ErrUnexpectedEOF +}