From 3998a677f90d93348cf4f079f68f7c0e1392cfc5 Mon Sep 17 00:00:00 2001 From: Dean Coakley Date: Tue, 4 May 2021 14:58:41 +0100 Subject: [PATCH 1/9] Improve description of MaxAge in summary docs (#864) * Improve description of MaxAge in summary docs Signed-off-by: Dean Coakley --- prometheus/summary.go | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/prometheus/summary.go b/prometheus/summary.go index fb5ce22..50e48ba 100644 --- a/prometheus/summary.go +++ b/prometheus/summary.go @@ -121,7 +121,9 @@ type SummaryOpts struct { Objectives map[float64]float64 // MaxAge defines the duration for which an observation stays relevant - // for the summary. Must be positive. The default value is DefMaxAge. + // for the summary. Only applies to pre-calculated quantiles, does not + // apply to _sum and _count. Must be positive. The default value is + // DefMaxAge. MaxAge time.Duration // AgeBuckets is the number of buckets used to exclude observations that From e07445a773a125833f4f78f511bedc26de39f157 Mon Sep 17 00:00:00 2001 From: Mitsuo Heijo Date: Sun, 25 Apr 2021 02:57:18 +0900 Subject: [PATCH 2/9] Add new collectors package Signed-off-by: Mitsuo Heijo --- prometheus/collectors/collectors.go | 16 +++++ prometheus/collectors/expvar_collector.go | 57 ++++++++++++++++++ prometheus/collectors/go_collector.go | 69 ++++++++++++++++++++++ prometheus/collectors/process_collector.go | 56 ++++++++++++++++++ prometheus/expvar_collector.go | 39 +----------- prometheus/go_collector.go | 47 ++------------- prometheus/process_collector.go | 12 +--- 7 files changed, 210 insertions(+), 86 deletions(-) create mode 100644 prometheus/collectors/collectors.go create mode 100644 prometheus/collectors/expvar_collector.go create mode 100644 prometheus/collectors/go_collector.go create mode 100644 prometheus/collectors/process_collector.go diff --git a/prometheus/collectors/collectors.go b/prometheus/collectors/collectors.go new file mode 100644 index 0000000..c4d0f5c --- /dev/null +++ b/prometheus/collectors/collectors.go @@ -0,0 +1,16 @@ +// Copyright 2021 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 collectors provides implementations of prometheus.Collector to +// conveniently collect process and Go-related metrics. +package collectors diff --git a/prometheus/collectors/expvar_collector.go b/prometheus/collectors/expvar_collector.go new file mode 100644 index 0000000..3aa8d05 --- /dev/null +++ b/prometheus/collectors/expvar_collector.go @@ -0,0 +1,57 @@ +// Copyright 2021 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 collectors + +import "github.com/prometheus/client_golang/prometheus" + +// NewExpvarCollector returns a newly allocated expvar Collector. +// +// An expvar Collector collects metrics from the expvar interface. It provides a +// quick way to expose numeric values that are already exported via expvar as +// Prometheus metrics. Note that the data models of expvar and Prometheus are +// fundamentally different, and that the expvar Collector is inherently slower +// than native Prometheus metrics. Thus, the expvar Collector is probably great +// for experiments and prototying, but you should seriously consider a more +// direct implementation of Prometheus metrics for monitoring production +// systems. +// +// The exports map has the following meaning: +// +// The keys in the map correspond to expvar keys, i.e. for every expvar key you +// want to export as Prometheus metric, you need an entry in the exports +// map. The descriptor mapped to each key describes how to export the expvar +// value. It defines the name and the help string of the Prometheus metric +// proxying the expvar value. The type will always be Untyped. +// +// For descriptors without variable labels, the expvar value must be a number or +// a bool. The number is then directly exported as the Prometheus sample +// value. (For a bool, 'false' translates to 0 and 'true' to 1). Expvar values +// that are not numbers or bools are silently ignored. +// +// If the descriptor has one variable label, the expvar value must be an expvar +// map. The keys in the expvar map become the various values of the one +// Prometheus label. The values in the expvar map must be numbers or bools again +// as above. +// +// For descriptors with more than one variable label, the expvar must be a +// nested expvar map, i.e. where the values of the topmost map are maps again +// etc. until a depth is reached that corresponds to the number of labels. The +// leaves of that structure must be numbers or bools as above to serve as the +// sample values. +// +// Anything that does not fit into the scheme above is silently ignored. +func NewExpvarCollector(exports map[string]*prometheus.Desc) prometheus.Collector { + //nolint:staticcheck // Ignore SA1019 until v2. + return prometheus.NewExpvarCollector(exports) +} diff --git a/prometheus/collectors/go_collector.go b/prometheus/collectors/go_collector.go new file mode 100644 index 0000000..edaa4e5 --- /dev/null +++ b/prometheus/collectors/go_collector.go @@ -0,0 +1,69 @@ +// Copyright 2021 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 collectors + +import "github.com/prometheus/client_golang/prometheus" + +// NewGoCollector returns a collector that exports metrics about the current Go +// process. This includes memory stats. To collect those, runtime.ReadMemStats +// is called. This requires to “stop the world”, which usually only happens for +// garbage collection (GC). Take the following implications into account when +// deciding whether to use the Go collector: +// +// 1. The performance impact of stopping the world is the more relevant the more +// frequently metrics are collected. However, with Go1.9 or later the +// stop-the-world time per metrics collection is very short (~25µs) so that the +// performance impact will only matter in rare cases. However, with older Go +// versions, the stop-the-world duration depends on the heap size and can be +// quite significant (~1.7 ms/GiB as per +// https://go-review.googlesource.com/c/go/+/34937). +// +// 2. During an ongoing GC, nothing else can stop the world. Therefore, if the +// metrics collection happens to coincide with GC, it will only complete after +// GC has finished. Usually, GC is fast enough to not cause problems. However, +// with a very large heap, GC might take multiple seconds, which is enough to +// cause scrape timeouts in common setups. To avoid this problem, the Go +// collector will use the memstats from a previous collection if +// runtime.ReadMemStats takes more than 1s. However, if there are no previously +// collected memstats, or their collection is more than 5m ago, the collection +// will block until runtime.ReadMemStats succeeds. +// +// NOTE: The problem is solved in Go 1.15, see +// https://github.com/golang/go/issues/19812 for the related Go issue. +func NewGoCollector() prometheus.Collector { + //nolint:staticcheck // Ignore SA1019 until v2. + return prometheus.NewGoCollector() +} + +// NewBuildInfoCollector returns a collector collecting a single metric +// "go_build_info" with the constant value 1 and three labels "path", "version", +// and "checksum". Their label values contain the main module path, version, and +// checksum, respectively. The labels will only have meaningful values if the +// binary is built with Go module support and from source code retrieved from +// the source repository (rather than the local file system). This is usually +// accomplished by building from outside of GOPATH, specifying the full address +// of the main package, e.g. "GO111MODULE=on go run +// github.com/prometheus/client_golang/examples/random". If built without Go +// module support, all label values will be "unknown". If built with Go module +// support but using the source code from the local file system, the "path" will +// be set appropriately, but "checksum" will be empty and "version" will be +// "(devel)". +// +// This collector uses only the build information for the main module. See +// https://github.com/povilasv/prommod for an example of a collector for the +// module dependencies. +func NewBuildInfoCollector() prometheus.Collector { + //nolint:staticcheck // Ignore SA1019 until v2. + return prometheus.NewBuildInfoCollector() +} diff --git a/prometheus/collectors/process_collector.go b/prometheus/collectors/process_collector.go new file mode 100644 index 0000000..24558f5 --- /dev/null +++ b/prometheus/collectors/process_collector.go @@ -0,0 +1,56 @@ +// Copyright 2021 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 collectors + +import "github.com/prometheus/client_golang/prometheus" + +// ProcessCollectorOpts defines the behavior of a process metrics collector +// created with NewProcessCollector. +type ProcessCollectorOpts struct { + // PidFn returns the PID of the process the collector collects metrics + // for. It is called upon each collection. By default, the PID of the + // current process is used, as determined on construction time by + // calling os.Getpid(). + PidFn func() (int, error) + // If non-empty, each of the collected metrics is prefixed by the + // provided string and an underscore ("_"). + Namespace string + // If true, any error encountered during collection is reported as an + // invalid metric (see NewInvalidMetric). Otherwise, errors are ignored + // and the collected metrics will be incomplete. (Possibly, no metrics + // will be collected at all.) While that's usually not desired, it is + // appropriate for the common "mix-in" of process metrics, where process + // metrics are nice to have, but failing to collect them should not + // disrupt the collection of the remaining metrics. + ReportErrors bool +} + +// NewProcessCollector returns a collector which exports the current state of +// process metrics including CPU, memory and file descriptor usage as well as +// the process start time. The detailed behavior is defined by the provided +// ProcessCollectorOpts. The zero value of ProcessCollectorOpts creates a +// collector for the current process with an empty namespace string and no error +// reporting. +// +// The collector only works on operating systems with a Linux-style proc +// filesystem and on Microsoft Windows. On other operating systems, it will not +// collect any metrics. +func NewProcessCollector(opts ProcessCollectorOpts) prometheus.Collector { + //nolint:staticcheck // Ignore SA1019 until v2. + return prometheus.NewProcessCollector(prometheus.ProcessCollectorOpts{ + PidFn: opts.PidFn, + Namespace: opts.Namespace, + ReportErrors: opts.ReportErrors, + }) +} diff --git a/prometheus/expvar_collector.go b/prometheus/expvar_collector.go index 18a99d5..c41ab37 100644 --- a/prometheus/expvar_collector.go +++ b/prometheus/expvar_collector.go @@ -22,43 +22,10 @@ type expvarCollector struct { exports map[string]*Desc } -// NewExpvarCollector returns a newly allocated expvar Collector that still has -// to be registered with a Prometheus registry. +// NewExpvarCollector is the obsolete version of collectors.NewExpvarCollector. +// See there for documentation. // -// An expvar Collector collects metrics from the expvar interface. It provides a -// quick way to expose numeric values that are already exported via expvar as -// Prometheus metrics. Note that the data models of expvar and Prometheus are -// fundamentally different, and that the expvar Collector is inherently slower -// than native Prometheus metrics. Thus, the expvar Collector is probably great -// for experiments and prototying, but you should seriously consider a more -// direct implementation of Prometheus metrics for monitoring production -// systems. -// -// The exports map has the following meaning: -// -// The keys in the map correspond to expvar keys, i.e. for every expvar key you -// want to export as Prometheus metric, you need an entry in the exports -// map. The descriptor mapped to each key describes how to export the expvar -// value. It defines the name and the help string of the Prometheus metric -// proxying the expvar value. The type will always be Untyped. -// -// For descriptors without variable labels, the expvar value must be a number or -// a bool. The number is then directly exported as the Prometheus sample -// value. (For a bool, 'false' translates to 0 and 'true' to 1). Expvar values -// that are not numbers or bools are silently ignored. -// -// If the descriptor has one variable label, the expvar value must be an expvar -// map. The keys in the expvar map become the various values of the one -// Prometheus label. The values in the expvar map must be numbers or bools again -// as above. -// -// For descriptors with more than one variable label, the expvar must be a -// nested expvar map, i.e. where the values of the topmost map are maps again -// etc. until a depth is reached that corresponds to the number of labels. The -// leaves of that structure must be numbers or bools as above to serve as the -// sample values. -// -// Anything that does not fit into the scheme above is silently ignored. +// Deprecated: Use collectors.NewExpvarCollector instead. func NewExpvarCollector(exports map[string]*Desc) Collector { return &expvarCollector{ exports: exports, diff --git a/prometheus/go_collector.go b/prometheus/go_collector.go index db43ca5..a96ed1c 100644 --- a/prometheus/go_collector.go +++ b/prometheus/go_collector.go @@ -36,32 +36,10 @@ type goCollector struct { msMaxAge time.Duration // Maximum allowed age of old memstats. } -// NewGoCollector returns a collector that exports metrics about the current Go -// process. This includes memory stats. To collect those, runtime.ReadMemStats -// is called. This requires to “stop the world”, which usually only happens for -// garbage collection (GC). Take the following implications into account when -// deciding whether to use the Go collector: +// NewGoCollector is the obsolete version of collectors.NewGoCollector. +// See there for documentation. // -// 1. The performance impact of stopping the world is the more relevant the more -// frequently metrics are collected. However, with Go1.9 or later the -// stop-the-world time per metrics collection is very short (~25µs) so that the -// performance impact will only matter in rare cases. However, with older Go -// versions, the stop-the-world duration depends on the heap size and can be -// quite significant (~1.7 ms/GiB as per -// https://go-review.googlesource.com/c/go/+/34937). -// -// 2. During an ongoing GC, nothing else can stop the world. Therefore, if the -// metrics collection happens to coincide with GC, it will only complete after -// GC has finished. Usually, GC is fast enough to not cause problems. However, -// with a very large heap, GC might take multiple seconds, which is enough to -// cause scrape timeouts in common setups. To avoid this problem, the Go -// collector will use the memstats from a previous collection if -// runtime.ReadMemStats takes more than 1s. However, if there are no previously -// collected memstats, or their collection is more than 5m ago, the collection -// will block until runtime.ReadMemStats succeeds. -// -// NOTE: The problem is solved in Go 1.15, see -// https://github.com/golang/go/issues/19812 for the related Go issue. +// Deprecated: Use collectors.NewGoCollector instead. func NewGoCollector() Collector { return &goCollector{ goroutinesDesc: NewDesc( @@ -366,23 +344,10 @@ type memStatsMetrics []struct { valType ValueType } -// NewBuildInfoCollector returns a collector collecting a single metric -// "go_build_info" with the constant value 1 and three labels "path", "version", -// and "checksum". Their label values contain the main module path, version, and -// checksum, respectively. The labels will only have meaningful values if the -// binary is built with Go module support and from source code retrieved from -// the source repository (rather than the local file system). This is usually -// accomplished by building from outside of GOPATH, specifying the full address -// of the main package, e.g. "GO111MODULE=on go run -// github.com/prometheus/client_golang/examples/random". If built without Go -// module support, all label values will be "unknown". If built with Go module -// support but using the source code from the local file system, the "path" will -// be set appropriately, but "checksum" will be empty and "version" will be -// "(devel)". +// NewBuildInfoCollector is the obsolete version of collectors.NewBuildInfoCollector. +// See there for documentation. // -// This collector uses only the build information for the main module. See -// https://github.com/povilasv/prommod for an example of a collector for the -// module dependencies. +// Deprecated: Use collectors.NewBuildInfoCollector instead. func NewBuildInfoCollector() Collector { path, version, sum := "unknown", "unknown", "unknown" if bi, ok := debug.ReadBuildInfo(); ok { diff --git a/prometheus/process_collector.go b/prometheus/process_collector.go index c46702d..5bfe0ff 100644 --- a/prometheus/process_collector.go +++ b/prometheus/process_collector.go @@ -54,16 +54,10 @@ type ProcessCollectorOpts struct { ReportErrors bool } -// NewProcessCollector returns a collector which exports the current state of -// process metrics including CPU, memory and file descriptor usage as well as -// the process start time. The detailed behavior is defined by the provided -// ProcessCollectorOpts. The zero value of ProcessCollectorOpts creates a -// collector for the current process with an empty namespace string and no error -// reporting. +// NewProcessCollector is the obsolete version of collectors.NewProcessCollector. +// See there for documentation. // -// The collector only works on operating systems with a Linux-style proc -// filesystem and on Microsoft Windows. On other operating systems, it will not -// collect any metrics. +// Deprecated: Use collectors.NewProcessCollector instead. func NewProcessCollector(opts ProcessCollectorOpts) Collector { ns := "" if len(opts.Namespace) > 0 { From a66da1df4a7e12cb9f84cf5ae3c7adec4539ed27 Mon Sep 17 00:00:00 2001 From: Mitsuo Heijo <25817501+johejo@users.noreply.github.com> Date: Fri, 21 May 2021 05:22:17 +0900 Subject: [PATCH 3/9] Add collector for database/sql#DBStats (#866) * Add collector for database/sql#DBStats Signed-off-by: Mitsuo Heijo --- prometheus/collectors/dbstats_collector.go | 102 ++++++++++++++++++ .../collectors/dbstats_collector_go115.go | 43 ++++++++ .../collectors/dbstats_collector_pre_go115.go | 41 +++++++ .../collectors/dbstats_collector_test.go | 97 +++++++++++++++++ 4 files changed, 283 insertions(+) create mode 100644 prometheus/collectors/dbstats_collector.go create mode 100644 prometheus/collectors/dbstats_collector_go115.go create mode 100644 prometheus/collectors/dbstats_collector_pre_go115.go create mode 100644 prometheus/collectors/dbstats_collector_test.go diff --git a/prometheus/collectors/dbstats_collector.go b/prometheus/collectors/dbstats_collector.go new file mode 100644 index 0000000..d7a37eb --- /dev/null +++ b/prometheus/collectors/dbstats_collector.go @@ -0,0 +1,102 @@ +// Copyright 2021 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 collectors + +import ( + "database/sql" + + "github.com/prometheus/client_golang/prometheus" +) + +type dbStatsCollector struct { + db *sql.DB + + maxOpenConnections *prometheus.Desc + + openConnections *prometheus.Desc + inUseConnections *prometheus.Desc + idleConnections *prometheus.Desc + + waitCount *prometheus.Desc + waitDuration *prometheus.Desc + maxIdleClosed *prometheus.Desc + maxIdleTimeClosed *prometheus.Desc + maxLifetimeClosed *prometheus.Desc +} + +// NewDBStatsCollector returns a collector that exports metrics about the given *sql.DB. +// See https://golang.org/pkg/database/sql/#DBStats for more information on stats. +func NewDBStatsCollector(db *sql.DB, dbName string) prometheus.Collector { + fqName := func(name string) string { + return "go_sql_" + name + } + return &dbStatsCollector{ + db: db, + maxOpenConnections: prometheus.NewDesc( + fqName("max_open_connections"), + "Maximum number of open connections to the database.", + nil, prometheus.Labels{"db_name": dbName}, + ), + openConnections: prometheus.NewDesc( + fqName("open_connections"), + "The number of established connections both in use and idle.", + nil, prometheus.Labels{"db_name": dbName}, + ), + inUseConnections: prometheus.NewDesc( + fqName("in_use_connections"), + "The number of connections currently in use.", + nil, prometheus.Labels{"db_name": dbName}, + ), + idleConnections: prometheus.NewDesc( + fqName("idle_connections"), + "The number of idle connections.", + nil, prometheus.Labels{"db_name": dbName}, + ), + waitCount: prometheus.NewDesc( + fqName("wait_count_total"), + "The total number of connections waited for.", + nil, prometheus.Labels{"db_name": dbName}, + ), + waitDuration: prometheus.NewDesc( + fqName("wait_duration_seconds_total"), + "The total time blocked waiting for a new connection.", + nil, prometheus.Labels{"db_name": dbName}, + ), + maxIdleClosed: prometheus.NewDesc( + fqName("max_idle_closed_total"), + "The total number of connections closed due to SetMaxIdleConns.", + nil, prometheus.Labels{"db_name": dbName}, + ), + maxIdleTimeClosed: prometheus.NewDesc( + fqName("max_idle_time_closed_total"), + "The total number of connections closed due to SetConnMaxIdleTime.", + nil, prometheus.Labels{"db_name": dbName}, + ), + maxLifetimeClosed: prometheus.NewDesc( + fqName("max_lifetime_closed_total"), + "The total number of connections closed due to SetConnMaxLifetime.", + nil, prometheus.Labels{"db_name": dbName}, + ), + } +} + +// Describe implements Collector. +func (c *dbStatsCollector) Describe(ch chan<- *prometheus.Desc) { + c.describe(ch) +} + +// Collect implements Collector. +func (c *dbStatsCollector) Collect(ch chan<- prometheus.Metric) { + c.collect(ch) +} diff --git a/prometheus/collectors/dbstats_collector_go115.go b/prometheus/collectors/dbstats_collector_go115.go new file mode 100644 index 0000000..c5324c6 --- /dev/null +++ b/prometheus/collectors/dbstats_collector_go115.go @@ -0,0 +1,43 @@ +// Copyright 2021 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. + +// +build go1.15 + +package collectors + +import "github.com/prometheus/client_golang/prometheus" + +func (c *dbStatsCollector) describe(ch chan<- *prometheus.Desc) { + ch <- c.maxOpenConnections + ch <- c.openConnections + ch <- c.inUseConnections + ch <- c.idleConnections + ch <- c.waitCount + ch <- c.waitDuration + ch <- c.maxIdleClosed + ch <- c.maxIdleTimeClosed + ch <- c.maxLifetimeClosed +} + +func (c *dbStatsCollector) collect(ch chan<- prometheus.Metric) { + stats := c.db.Stats() + ch <- prometheus.MustNewConstMetric(c.maxOpenConnections, prometheus.GaugeValue, float64(stats.MaxOpenConnections)) + ch <- prometheus.MustNewConstMetric(c.openConnections, prometheus.GaugeValue, float64(stats.OpenConnections)) + ch <- prometheus.MustNewConstMetric(c.inUseConnections, prometheus.GaugeValue, float64(stats.InUse)) + ch <- prometheus.MustNewConstMetric(c.idleConnections, prometheus.GaugeValue, float64(stats.Idle)) + ch <- prometheus.MustNewConstMetric(c.waitCount, prometheus.CounterValue, float64(stats.WaitCount)) + ch <- prometheus.MustNewConstMetric(c.waitDuration, prometheus.CounterValue, stats.WaitDuration.Seconds()) + ch <- prometheus.MustNewConstMetric(c.maxIdleClosed, prometheus.CounterValue, float64(stats.MaxIdleClosed)) + ch <- prometheus.MustNewConstMetric(c.maxIdleTimeClosed, prometheus.CounterValue, float64(stats.MaxIdleTimeClosed)) + ch <- prometheus.MustNewConstMetric(c.maxLifetimeClosed, prometheus.CounterValue, float64(stats.MaxLifetimeClosed)) +} diff --git a/prometheus/collectors/dbstats_collector_pre_go115.go b/prometheus/collectors/dbstats_collector_pre_go115.go new file mode 100644 index 0000000..8eb5153 --- /dev/null +++ b/prometheus/collectors/dbstats_collector_pre_go115.go @@ -0,0 +1,41 @@ +// Copyright 2021 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. + +// +build !go1.15 + +package collectors + +import "github.com/prometheus/client_golang/prometheus" + +func (c *dbStatsCollector) describe(ch chan<- *prometheus.Desc) { + ch <- c.maxOpenConnections + ch <- c.openConnections + ch <- c.inUseConnections + ch <- c.idleConnections + ch <- c.waitCount + ch <- c.waitDuration + ch <- c.maxIdleClosed + ch <- c.maxLifetimeClosed +} + +func (c *dbStatsCollector) collect(ch chan<- prometheus.Metric) { + stats := c.db.Stats() + ch <- prometheus.MustNewConstMetric(c.maxOpenConnections, prometheus.GaugeValue, float64(stats.MaxOpenConnections)) + ch <- prometheus.MustNewConstMetric(c.openConnections, prometheus.GaugeValue, float64(stats.OpenConnections)) + ch <- prometheus.MustNewConstMetric(c.inUseConnections, prometheus.GaugeValue, float64(stats.InUse)) + ch <- prometheus.MustNewConstMetric(c.idleConnections, prometheus.GaugeValue, float64(stats.Idle)) + ch <- prometheus.MustNewConstMetric(c.waitCount, prometheus.CounterValue, float64(stats.WaitCount)) + ch <- prometheus.MustNewConstMetric(c.waitDuration, prometheus.CounterValue, stats.WaitDuration.Seconds()) + ch <- prometheus.MustNewConstMetric(c.maxIdleClosed, prometheus.CounterValue, float64(stats.MaxIdleClosed)) + ch <- prometheus.MustNewConstMetric(c.maxLifetimeClosed, prometheus.CounterValue, float64(stats.MaxLifetimeClosed)) +} diff --git a/prometheus/collectors/dbstats_collector_test.go b/prometheus/collectors/dbstats_collector_test.go new file mode 100644 index 0000000..4cfdda5 --- /dev/null +++ b/prometheus/collectors/dbstats_collector_test.go @@ -0,0 +1,97 @@ +// Copyright 2021 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 collectors + +import ( + "database/sql" + "runtime" + "testing" + + "github.com/prometheus/client_golang/prometheus" +) + +func TestDBStatsCollector(t *testing.T) { + reg := prometheus.NewRegistry() + { + db := new(sql.DB) + if err := reg.Register(NewDBStatsCollector(db, "db_A")); err != nil { + t.Fatal(err) + } + } + { + db := new(sql.DB) + if err := reg.Register(NewDBStatsCollector(db, "db_B")); err != nil { + t.Fatal(err) + } + } + + mfs, err := reg.Gather() + if err != nil { + t.Fatal(err) + } + + names := []string{ + "go_sql_max_open_connections", + "go_sql_open_connections", + "go_sql_in_use_connections", + "go_sql_idle_connections", + "go_sql_wait_count_total", + "go_sql_wait_duration_seconds_total", + "go_sql_max_idle_closed_total", + "go_sql_max_lifetime_closed_total", + } + if runtime.Version() >= "go1.15" { + names = append(names, "go_sql_max_idle_time_closed_total") + } + type result struct { + found bool + } + results := make(map[string]result) + for _, name := range names { + results[name] = result{found: false} + } + for _, mf := range mfs { + m := mf.GetMetric() + if len(m) != 2 { + t.Errorf("expected 2 metrics bug got %d", len(m)) + } + labelA := m[0].GetLabel()[0] + if name := labelA.GetName(); name != "db_name" { + t.Errorf("expected to get label \"db_name\" but got %s", name) + } + if value := labelA.GetValue(); value != "db_A" { + t.Errorf("expected to get value \"db_A\" but got %s", value) + } + labelB := m[1].GetLabel()[0] + if name := labelB.GetName(); name != "db_name" { + t.Errorf("expected to get label \"db_name\" but got %s", name) + } + if value := labelB.GetValue(); value != "db_B" { + t.Errorf("expected to get value \"db_B\" but got %s", value) + } + + for _, name := range names { + if name == mf.GetName() { + results[name] = result{found: true} + break + } + } + } + + for name, result := range results { + if !result.found { + t.Errorf("%s not found", name) + } + } +} From 81a9556c8b4ffac3dd75f7aedf720b3ae73e1276 Mon Sep 17 00:00:00 2001 From: beorn7 Date: Thu, 20 May 2021 22:31:53 +0200 Subject: [PATCH 4/9] Make dbStatsCollector more DRY Signed-off-by: beorn7 --- prometheus/collectors/dbstats_collector.go | 21 ++++++++++++-- .../collectors/dbstats_collector_go115.go | 27 +++++------------ .../collectors/dbstats_collector_pre_go115.go | 29 +++++-------------- 3 files changed, 33 insertions(+), 44 deletions(-) diff --git a/prometheus/collectors/dbstats_collector.go b/prometheus/collectors/dbstats_collector.go index d7a37eb..e09f149 100644 --- a/prometheus/collectors/dbstats_collector.go +++ b/prometheus/collectors/dbstats_collector.go @@ -93,10 +93,27 @@ func NewDBStatsCollector(db *sql.DB, dbName string) prometheus.Collector { // Describe implements Collector. func (c *dbStatsCollector) Describe(ch chan<- *prometheus.Desc) { - c.describe(ch) + ch <- c.maxOpenConnections + ch <- c.openConnections + ch <- c.inUseConnections + ch <- c.idleConnections + ch <- c.waitCount + ch <- c.waitDuration + ch <- c.maxIdleClosed + ch <- c.maxLifetimeClosed + c.describeNewInGo115(ch) } // Collect implements Collector. func (c *dbStatsCollector) Collect(ch chan<- prometheus.Metric) { - c.collect(ch) + stats := c.db.Stats() + ch <- prometheus.MustNewConstMetric(c.maxOpenConnections, prometheus.GaugeValue, float64(stats.MaxOpenConnections)) + ch <- prometheus.MustNewConstMetric(c.openConnections, prometheus.GaugeValue, float64(stats.OpenConnections)) + ch <- prometheus.MustNewConstMetric(c.inUseConnections, prometheus.GaugeValue, float64(stats.InUse)) + ch <- prometheus.MustNewConstMetric(c.idleConnections, prometheus.GaugeValue, float64(stats.Idle)) + ch <- prometheus.MustNewConstMetric(c.waitCount, prometheus.CounterValue, float64(stats.WaitCount)) + ch <- prometheus.MustNewConstMetric(c.waitDuration, prometheus.CounterValue, stats.WaitDuration.Seconds()) + ch <- prometheus.MustNewConstMetric(c.maxIdleClosed, prometheus.CounterValue, float64(stats.MaxIdleClosed)) + ch <- prometheus.MustNewConstMetric(c.maxLifetimeClosed, prometheus.CounterValue, float64(stats.MaxLifetimeClosed)) + c.collectNewInGo115(ch, stats) } diff --git a/prometheus/collectors/dbstats_collector_go115.go b/prometheus/collectors/dbstats_collector_go115.go index c5324c6..a6e6268 100644 --- a/prometheus/collectors/dbstats_collector_go115.go +++ b/prometheus/collectors/dbstats_collector_go115.go @@ -15,29 +15,16 @@ package collectors -import "github.com/prometheus/client_golang/prometheus" +import ( + "database/sql" -func (c *dbStatsCollector) describe(ch chan<- *prometheus.Desc) { - ch <- c.maxOpenConnections - ch <- c.openConnections - ch <- c.inUseConnections - ch <- c.idleConnections - ch <- c.waitCount - ch <- c.waitDuration - ch <- c.maxIdleClosed + "github.com/prometheus/client_golang/prometheus" +) + +func (c *dbStatsCollector) describeNewInGo115(ch chan<- *prometheus.Desc) { ch <- c.maxIdleTimeClosed - ch <- c.maxLifetimeClosed } -func (c *dbStatsCollector) collect(ch chan<- prometheus.Metric) { - stats := c.db.Stats() - ch <- prometheus.MustNewConstMetric(c.maxOpenConnections, prometheus.GaugeValue, float64(stats.MaxOpenConnections)) - ch <- prometheus.MustNewConstMetric(c.openConnections, prometheus.GaugeValue, float64(stats.OpenConnections)) - ch <- prometheus.MustNewConstMetric(c.inUseConnections, prometheus.GaugeValue, float64(stats.InUse)) - ch <- prometheus.MustNewConstMetric(c.idleConnections, prometheus.GaugeValue, float64(stats.Idle)) - ch <- prometheus.MustNewConstMetric(c.waitCount, prometheus.CounterValue, float64(stats.WaitCount)) - ch <- prometheus.MustNewConstMetric(c.waitDuration, prometheus.CounterValue, stats.WaitDuration.Seconds()) - ch <- prometheus.MustNewConstMetric(c.maxIdleClosed, prometheus.CounterValue, float64(stats.MaxIdleClosed)) +func (c *dbStatsCollector) collectNewInGo115(ch chan<- prometheus.Metric, stats sql.DBStats) { ch <- prometheus.MustNewConstMetric(c.maxIdleTimeClosed, prometheus.CounterValue, float64(stats.MaxIdleTimeClosed)) - ch <- prometheus.MustNewConstMetric(c.maxLifetimeClosed, prometheus.CounterValue, float64(stats.MaxLifetimeClosed)) } diff --git a/prometheus/collectors/dbstats_collector_pre_go115.go b/prometheus/collectors/dbstats_collector_pre_go115.go index 8eb5153..0568aff 100644 --- a/prometheus/collectors/dbstats_collector_pre_go115.go +++ b/prometheus/collectors/dbstats_collector_pre_go115.go @@ -15,27 +15,12 @@ package collectors -import "github.com/prometheus/client_golang/prometheus" +import ( + "database/sql" -func (c *dbStatsCollector) describe(ch chan<- *prometheus.Desc) { - ch <- c.maxOpenConnections - ch <- c.openConnections - ch <- c.inUseConnections - ch <- c.idleConnections - ch <- c.waitCount - ch <- c.waitDuration - ch <- c.maxIdleClosed - ch <- c.maxLifetimeClosed -} + "github.com/prometheus/client_golang/prometheus" +) -func (c *dbStatsCollector) collect(ch chan<- prometheus.Metric) { - stats := c.db.Stats() - ch <- prometheus.MustNewConstMetric(c.maxOpenConnections, prometheus.GaugeValue, float64(stats.MaxOpenConnections)) - ch <- prometheus.MustNewConstMetric(c.openConnections, prometheus.GaugeValue, float64(stats.OpenConnections)) - ch <- prometheus.MustNewConstMetric(c.inUseConnections, prometheus.GaugeValue, float64(stats.InUse)) - ch <- prometheus.MustNewConstMetric(c.idleConnections, prometheus.GaugeValue, float64(stats.Idle)) - ch <- prometheus.MustNewConstMetric(c.waitCount, prometheus.CounterValue, float64(stats.WaitCount)) - ch <- prometheus.MustNewConstMetric(c.waitDuration, prometheus.CounterValue, stats.WaitDuration.Seconds()) - ch <- prometheus.MustNewConstMetric(c.maxIdleClosed, prometheus.CounterValue, float64(stats.MaxIdleClosed)) - ch <- prometheus.MustNewConstMetric(c.maxLifetimeClosed, prometheus.CounterValue, float64(stats.MaxLifetimeClosed)) -} +func (c *dbStatsCollector) describeNewInGo115(ch chan<- *prometheus.Desc) {} + +func (c *dbStatsCollector) collectNewInGo115(ch chan<- prometheus.Metric, stats sql.DBStats) {} From f34145a85eaff9d42ff629a2975e8118ab41773c Mon Sep 17 00:00:00 2001 From: beorn7 Date: Wed, 26 May 2021 23:41:30 +0200 Subject: [PATCH 5/9] Document implications of negative observations Signed-off-by: beorn7 --- prometheus/histogram.go | 7 ++++++- prometheus/summary.go | 7 ++++++- 2 files changed, 12 insertions(+), 2 deletions(-) diff --git a/prometheus/histogram.go b/prometheus/histogram.go index 3346fa1..8425640 100644 --- a/prometheus/histogram.go +++ b/prometheus/histogram.go @@ -47,7 +47,12 @@ type Histogram interface { Metric Collector - // Observe adds a single observation to the histogram. + // Observe adds a single observation to the histogram. Observations are + // usually positive or zero. Negative observations are accepted but + // prevent current versions of Prometheus from properly detecting + // counter resets in the sum of observations. See + // https://prometheus.io/docs/practices/histograms/#count-and-sum-of-observations + // for details. Observe(float64) } diff --git a/prometheus/summary.go b/prometheus/summary.go index 50e48ba..c5fa8ed 100644 --- a/prometheus/summary.go +++ b/prometheus/summary.go @@ -55,7 +55,12 @@ type Summary interface { Metric Collector - // Observe adds a single observation to the summary. + // Observe adds a single observation to the summary. Observations are + // usually positive or zero. Negative observations are accepted but + // prevent current versions of Prometheus from properly detecting + // counter resets in the sum of observations. See + // https://prometheus.io/docs/practices/histograms/#count-and-sum-of-observations + // for details. Observe(float64) } From 11aba26a91c3ea0581eef96f8ec9fc5cdce204f9 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20Rabenstein?= Date: Tue, 1 Jun 2021 15:13:09 +0200 Subject: [PATCH 6/9] Change maintainers from @beorn7 to @bwplotka/@kakkoyun (#873) Lazy consensus was already established among prometheus-team. This change will be announced on prometheus-developers@ once it is merged. Signed-off-by: beorn7 --- MAINTAINERS.md | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/MAINTAINERS.md b/MAINTAINERS.md index 3fb44f5..f0cddd0 100644 --- a/MAINTAINERS.md +++ b/MAINTAINERS.md @@ -1 +1,2 @@ -* Björn Rabenstein @beorn7 +* Bartłomiej Płotka @bwplotka +* Kemal Akkoyun @kakkoyun From 68cd1e9262e2fe03a79c9a8bab6737f04995e8a5 Mon Sep 17 00:00:00 2001 From: SuperQ Date: Thu, 3 Jun 2021 13:01:53 +0200 Subject: [PATCH 7/9] Update Go modules Update all modules to the latest versions. This starts to reduce the indirect dependencies on go-kit/kit in favor of go-kit/log. Signed-off-by: SuperQ --- go.mod | 8 +- go.sum | 289 +++------------------------------------------------------ 2 files changed, 18 insertions(+), 279 deletions(-) diff --git a/go.mod b/go.mod index 65ec5a7..a42a23d 100644 --- a/go.mod +++ b/go.mod @@ -4,11 +4,13 @@ require ( github.com/beorn7/perks v1.0.1 github.com/cespare/xxhash/v2 v2.1.1 github.com/golang/protobuf v1.4.3 - github.com/json-iterator/go v1.1.10 + github.com/json-iterator/go v1.1.11 github.com/prometheus/client_model v0.2.0 - github.com/prometheus/common v0.18.0 + github.com/prometheus/common v0.26.0 github.com/prometheus/procfs v0.6.0 - golang.org/x/sys v0.0.0-20210309074719-68d13333faf2 + golang.org/x/sys v0.0.0-20210603081109-ebe580a85c40 + golang.org/x/text v0.3.2 // indirect + google.golang.org/protobuf v1.26.0-rc.1 // indirect ) go 1.13 diff --git a/go.sum b/go.sum index 853e0d5..c803e24 100644 --- a/go.sum +++ b/go.sum @@ -1,77 +1,26 @@ -cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= -github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= -github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0= -github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo= -github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI= -github.com/VividCortex/gohistogram v1.0.0/go.mod h1:Pf5mBqqDxYaXu3hDrrU+w6nw50o/4+TcAqDqk/vUH7g= -github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5/go.mod h1:SkGFH1ia65gfNATL8TAiHDNxPzPdmEL5uirI2Uyuz6c= github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc= github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod 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gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU= gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= -honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= -honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= -honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= -honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg= -sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o= -sourcegraph.com/sourcegraph/appdash v0.0.0-20190731080439-ebfcffb1b5c0/go.mod h1:hI742Nqp5OhwiqlzhgfbWU4mW4yO10fP+LoT9WOswdU= From 8184d76b3b0bd3b01ed903690431ccb6826bf3e0 Mon Sep 17 00:00:00 2001 From: Kemal Akkoyun Date: Mon, 7 Jun 2021 14:32:16 +0200 Subject: [PATCH 8/9] Cut v1.11.0 (#877) Signed-off-by: Kemal Akkoyun --- CHANGELOG.md | 9 ++++++++- VERSION | 2 +- 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/CHANGELOG.md b/CHANGELOG.md index 790b9cb..98f75a0 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -1,3 +1,10 @@ +## 1.11.0 / 2021-06-07 + +* [ENHANCEMENT] API client: Add newer fields to Rules API #855 +* [ENHANCEMENT] API client: Add missing fields to Targets API #856 +* [FEATURE] API client: Add exemplars API support #861 +* [CHANGE] Add new collectors package #862 + ## 1.10.0 / 2021-03-18 * [CHANGE] Minimum required Go version is now 1.13. @@ -126,7 +133,7 @@ _This release removes all previously deprecated features, resulting in the break ## 0.9.2 / 2018-12-06 * [FEATURE] Support for Go modules. #501 * [FEATURE] `Timer.ObserveDuration` returns observed duration. #509 -* [ENHANCEMENT] Improved doc comments and error messages. #504 +* [ENHANCEMENT] Improved doc comments and error messages. #504 * [BUGFIX] Fix race condition during metrics gathering. #512 * [BUGFIX] Fix testutil metric comparison for Histograms and empty labels. #494 #498 diff --git a/VERSION b/VERSION index 81c871d..1cac385 100644 --- a/VERSION +++ b/VERSION @@ -1 +1 @@ -1.10.0 +1.11.0 From 64a9c512d48bb8126f99ab0d741c23e7941d78d4 Mon Sep 17 00:00:00 2001 From: Kemal Akkoyun Date: Mon, 7 Jun 2021 18:41:09 +0200 Subject: [PATCH 9/9] Address minor issues on Changelog Signed-off-by: Kemal Akkoyun --- CHANGELOG.md | 29 ++++++++++++++++++++++++----- 1 file changed, 24 insertions(+), 5 deletions(-) diff --git a/CHANGELOG.md b/CHANGELOG.md index 98f75a0..b5d774d 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -1,9 +1,13 @@ ## 1.11.0 / 2021-06-07 -* [ENHANCEMENT] API client: Add newer fields to Rules API #855 -* [ENHANCEMENT] API client: Add missing fields to Targets API #856 -* [FEATURE] API client: Add exemplars API support #861 -* [CHANGE] Add new collectors package #862 +* [CHANGE] Add new collectors package. #862 +* [CHANGE] `prometheus.NewExpvarCollector` is deprecated, use `collectors.NewExpvarCollector` instead. #862 +* [CHANGE] `prometheus.NewGoCollector` is deprecated, use `collectors.NewGoCollector` instead. #862 +* [CHANGE] `prometheus.NewBuildInfoCollector` is deprecated, use `collectors.NewBuildInfoCollector` instead. #862 +* [FEATURE] Add new collector for database/sql#DBStats. #866 +* [FEATURE] API client: Add exemplars API support. #861 +* [ENHANCEMENT] API client: Add newer fields to Rules API. #855 +* [ENHANCEMENT] API client: Add missing fields to Targets API. #856 ## 1.10.0 / 2021-03-18 @@ -21,7 +25,7 @@ * [CHANGE] API client: Use `time.Time` rather than `string` for timestamps in `RuntimeinfoResult`. #777 * [FEATURE] Export `MetricVec` to facilitate implementation of vectors of custom `Metric` types. #803 -* [FEATURE API client: Support `/status/tsdb` endpoint. #773 +* [FEATURE] API client: Support `/status/tsdb` endpoint. #773 * [ENHANCEMENT] API client: Enable GET fallback on status code 501. #802 * [ENHANCEMENT] Remove `Metric` references after reslicing to free up more memory. #784 @@ -101,6 +105,7 @@ _This release removes all previously deprecated features, resulting in the break * [BUGFIX] Make `AlreadyRegisteredError` usable for wrapped registries. #607 ## 0.9.4 / 2019-06-07 + * [CHANGE] API client: Switch to alert values as strings. #585 * [FEATURE] Add a collector for Go module build information. #595 * [FEATURE] promhttp: Add an counter for internal errors during HTTP exposition. #594 @@ -110,6 +115,7 @@ _This release removes all previously deprecated features, resulting in the break * [BUGFIX] Reduce test flakiness. #573 ## 0.9.3 / 2019-05-16 + * [CHANGE] Required Go version is now 1.9+. #561 * [FEATURE] API client: Add POST with get fallback for Query/QueryRange. #557 * [FEATURE] API client: Add alerts endpoint. #552 @@ -131,6 +137,7 @@ _This release removes all previously deprecated features, resulting in the break * [BUGFIX] API client: Deal with discovered labels properly. #529 ## 0.9.2 / 2018-12-06 + * [FEATURE] Support for Go modules. #501 * [FEATURE] `Timer.ObserveDuration` returns observed duration. #509 * [ENHANCEMENT] Improved doc comments and error messages. #504 @@ -139,6 +146,7 @@ _This release removes all previously deprecated features, resulting in the break #498 ## 0.9.1 / 2018-11-03 + * [FEATURE] Add `WriteToTextfile` function to facilitate the creation of *.prom files for the textfile collector of the node exporter. #489 * [ENHANCEMENT] More descriptive error messages for inconsistent label @@ -151,6 +159,7 @@ _This release removes all previously deprecated features, resulting in the break #479 ## 0.9.0 / 2018-10-15 + * [CHANGE] Go1.6 is no longer supported. * [CHANGE] More refinements of the `Registry` consistency checks: Duplicated labels are now detected, but inconsistent label dimensions are now allowed. @@ -203,6 +212,7 @@ _This release removes all previously deprecated features, resulting in the break responses. #476 #414 ## 0.8.0 / 2016-08-17 + * [CHANGE] Registry is doing more consistency checks. This might break existing setups that used to export inconsistent metrics. * [CHANGE] Pushing to Pushgateway moved to package `push` and changed to allow @@ -226,6 +236,7 @@ _This release removes all previously deprecated features, resulting in the break * [BUGFIX] Handle collisions in MetricVec. ## 0.7.0 / 2015-07-27 + * [CHANGE] Rename ExporterLabelPrefix to ExportedLabelPrefix. * [BUGFIX] Closed gaps in metric consistency check. * [BUGFIX] Validate LabelName/LabelSet on JSON unmarshaling. @@ -236,12 +247,14 @@ _This release removes all previously deprecated features, resulting in the break * [ENHANCEMENT] Change responseWriterDelegator.written to int64. ## 0.6.0 / 2015-06-01 + * [CHANGE] Rename process_goroutines to go_goroutines. * [ENHANCEMENT] Validate label names during YAML decoding. * [ENHANCEMENT] Add LabelName regular expression. * [BUGFIX] Ensure alignment of struct members for 32-bit systems. ## 0.5.0 / 2015-05-06 + * [BUGFIX] Removed a weakness in the fingerprinting aka signature code. This makes fingerprinting slower and more allocation-heavy, but the weakness was too severe to be tolerated. @@ -260,6 +273,7 @@ _This release removes all previously deprecated features, resulting in the break * [CHANGE] A number of new reserved labels and prefixes. ## 0.4.0 / 2015-04-08 + * [CHANGE] Return NaN when Summaries have no observations yet. * [BUGFIX] Properly handle Summary decay upon Write(). * [BUGFIX] Fix the documentation link to the consumption library. @@ -269,16 +283,19 @@ _This release removes all previously deprecated features, resulting in the break * [MAINTENANCE] Adjusted to changes in matttproud/golang_protobuf_extensions. ## 0.3.2 / 2015-03-11 + * [BUGFIX] Fixed the receiver type of COWMetric.Set(). This method is only used by the Prometheus server internally. * [CLEANUP] Added licenses of vendored code left out by godep. ## 0.3.1 / 2015-03-04 + * [ENHANCEMENT] Switched fingerprinting functions from own free list to sync.Pool. * [CHANGE] Makefile uses Go 1.4.2 now (only relevant for examples and tests). ## 0.3.0 / 2015-03-03 + * [CHANGE] Changed the fingerprinting for metrics. THIS WILL INVALIDATE ALL PERSISTED FINGERPRINTS. IF YOU COMPILE THE PROMETHEUS SERVER WITH THIS VERSION, YOU HAVE TO WIPE THE PREVIOUSLY CREATED STORAGE. @@ -293,6 +310,7 @@ _This release removes all previously deprecated features, resulting in the break require fewer allocations than the ones currently used by the server. ## 0.2.0 / 2015-02-23 + * [FEATURE] Introduce new Histagram metric type. * [CHANGE] Ignore process collector errors for now (better error handling pending). @@ -309,5 +327,6 @@ _This release removes all previously deprecated features, resulting in the break * [CLEANUP] Updated vendoring of beorn7/perks. ## 0.1.0 / 2015-02-02 + * [CLEANUP] Introduced semantic versioning and changelog. From now on, changes will be reported in this file.