diff --git a/prometheus/doc.go b/prometheus/doc.go index 1e0d578..01977de 100644 --- a/prometheus/doc.go +++ b/prometheus/doc.go @@ -183,7 +183,6 @@ // method can then expose the gathered metrics in some way. Usually, the metrics // are served via HTTP on the /metrics endpoint. That's happening in the example // above. The tools to expose metrics via HTTP are in the promhttp sub-package. -// (The top-level functions in the prometheus package are deprecated.) // // Pushing to the Pushgateway // diff --git a/prometheus/examples_test.go b/prometheus/examples_test.go index 91fef3d..bdb567e 100644 --- a/prometheus/examples_test.go +++ b/prometheus/examples_test.go @@ -28,6 +28,7 @@ import ( dto "github.com/prometheus/client_model/go" "github.com/prometheus/client_golang/prometheus" + "github.com/prometheus/client_golang/prometheus/promhttp" ) func ExampleGauge() { @@ -117,25 +118,6 @@ func ExampleCounterVec() { httpReqs.Delete(prometheus.Labels{"method": "GET", "code": "200"}) } -func ExampleInstrumentHandler() { - // Handle the "/doc" endpoint with the standard http.FileServer handler. - // By wrapping the handler with InstrumentHandler, request count, - // request and response sizes, and request latency are automatically - // exported to Prometheus, partitioned by HTTP status code and method - // and by the handler name (here "fileserver"). - http.Handle("/doc", prometheus.InstrumentHandler( - "fileserver", http.FileServer(http.Dir("/usr/share/doc")), - )) - // The Prometheus handler still has to be registered to handle the - // "/metrics" endpoint. The handler returned by prometheus.Handler() is - // already instrumented - with "prometheus" as the handler name. In this - // example, we want the handler name to be "metrics", so we instrument - // the uninstrumented Prometheus handler ourselves. - http.Handle("/metrics", prometheus.InstrumentHandler( - "metrics", prometheus.UninstrumentedHandler(), - )) -} - func ExampleRegister() { // Imagine you have a worker pool and want to count the tasks completed. taskCounter := prometheus.NewCounter(prometheus.CounterOpts{ @@ -151,7 +133,7 @@ func ExampleRegister() { } // Don't forget to tell the HTTP server about the Prometheus handler. // (In a real program, you still need to start the HTTP server...) - http.Handle("/metrics", prometheus.Handler()) + http.Handle("/metrics", promhttp.Handler()) // Now you can start workers and give every one of them a pointer to // taskCounter and let it increment it whenever it completes a task. diff --git a/prometheus/histogram_test.go b/prometheus/histogram_test.go index 9546b87..306eee9 100644 --- a/prometheus/histogram_test.go +++ b/prometheus/histogram_test.go @@ -231,13 +231,6 @@ func TestHistogramVecConcurrency(t *testing.T) { rand.Seed(42) - objectives := make([]float64, 0, len(DefObjectives)) - for qu := range DefObjectives { - - objectives = append(objectives, qu) - } - sort.Float64s(objectives) - it := func(n uint32) bool { mutations := int(n%1e4 + 1e4) concLevel := int(n%7 + 1) diff --git a/prometheus/http.go b/prometheus/http.go deleted file mode 100644 index 19a3e8f..0000000 --- a/prometheus/http.go +++ /dev/null @@ -1,505 +0,0 @@ -// Copyright 2014 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 prometheus - -import ( - "bufio" - "compress/gzip" - "io" - "net" - "net/http" - "strconv" - "strings" - "sync" - "time" - - "github.com/prometheus/common/expfmt" -) - -// TODO(beorn7): Remove this whole file. It is a partial mirror of -// promhttp/http.go (to avoid circular import chains) where everything HTTP -// related should live. The functions here are just for avoiding -// breakage. Everything is deprecated. - -const ( - contentTypeHeader = "Content-Type" - contentEncodingHeader = "Content-Encoding" - acceptEncodingHeader = "Accept-Encoding" -) - -var gzipPool = sync.Pool{ - New: func() interface{} { - return gzip.NewWriter(nil) - }, -} - -// Handler returns an HTTP handler for the DefaultGatherer. It is -// already instrumented with InstrumentHandler (using "prometheus" as handler -// name). -// -// Deprecated: Please note the issues described in the doc comment of -// InstrumentHandler. You might want to consider using promhttp.Handler instead. -func Handler() http.Handler { - return InstrumentHandler("prometheus", UninstrumentedHandler()) -} - -// UninstrumentedHandler returns an HTTP handler for the DefaultGatherer. -// -// Deprecated: Use promhttp.HandlerFor(DefaultGatherer, promhttp.HandlerOpts{}) -// instead. See there for further documentation. -func UninstrumentedHandler() http.Handler { - return http.HandlerFunc(func(rsp http.ResponseWriter, req *http.Request) { - mfs, err := DefaultGatherer.Gather() - if err != nil { - httpError(rsp, err) - return - } - - contentType := expfmt.Negotiate(req.Header) - header := rsp.Header() - header.Set(contentTypeHeader, string(contentType)) - - w := io.Writer(rsp) - if gzipAccepted(req.Header) { - header.Set(contentEncodingHeader, "gzip") - gz := gzipPool.Get().(*gzip.Writer) - defer gzipPool.Put(gz) - - gz.Reset(w) - defer gz.Close() - - w = gz - } - - enc := expfmt.NewEncoder(w, contentType) - - for _, mf := range mfs { - if err := enc.Encode(mf); err != nil { - httpError(rsp, err) - return - } - } - }) -} - -var instLabels = []string{"method", "code"} - -type nower interface { - Now() time.Time -} - -type nowFunc func() time.Time - -func (n nowFunc) Now() time.Time { - return n() -} - -var now nower = nowFunc(func() time.Time { - return time.Now() -}) - -// InstrumentHandler wraps the given HTTP handler for instrumentation. It -// registers four metric collectors (if not already done) and reports HTTP -// metrics to the (newly or already) registered collectors: http_requests_total -// (CounterVec), http_request_duration_microseconds (Summary), -// http_request_size_bytes (Summary), http_response_size_bytes (Summary). Each -// has a constant label named "handler" with the provided handlerName as -// value. http_requests_total is a metric vector partitioned by HTTP method -// (label name "method") and HTTP status code (label name "code"). -// -// Deprecated: InstrumentHandler has several issues. Use the tooling provided in -// package promhttp instead. The issues are the following: (1) It uses Summaries -// rather than Histograms. Summaries are not useful if aggregation across -// multiple instances is required. (2) It uses microseconds as unit, which is -// deprecated and should be replaced by seconds. (3) The size of the request is -// calculated in a separate goroutine. Since this calculator requires access to -// the request header, it creates a race with any writes to the header performed -// during request handling. httputil.ReverseProxy is a prominent example for a -// handler performing such writes. (4) It has additional issues with HTTP/2, cf. -// https://github.com/prometheus/client_golang/issues/272. -func InstrumentHandler(handlerName string, handler http.Handler) http.HandlerFunc { - return InstrumentHandlerFunc(handlerName, handler.ServeHTTP) -} - -// InstrumentHandlerFunc wraps the given function for instrumentation. It -// otherwise works in the same way as InstrumentHandler (and shares the same -// issues). -// -// Deprecated: InstrumentHandlerFunc is deprecated for the same reasons as -// InstrumentHandler is. Use the tooling provided in package promhttp instead. -func InstrumentHandlerFunc(handlerName string, handlerFunc func(http.ResponseWriter, *http.Request)) http.HandlerFunc { - return InstrumentHandlerFuncWithOpts( - SummaryOpts{ - Subsystem: "http", - ConstLabels: Labels{"handler": handlerName}, - Objectives: map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001}, - }, - handlerFunc, - ) -} - -// InstrumentHandlerWithOpts works like InstrumentHandler (and shares the same -// issues) but provides more flexibility (at the cost of a more complex call -// syntax). As InstrumentHandler, this function registers four metric -// collectors, but it uses the provided SummaryOpts to create them. However, the -// fields "Name" and "Help" in the SummaryOpts are ignored. "Name" is replaced -// by "requests_total", "request_duration_microseconds", "request_size_bytes", -// and "response_size_bytes", respectively. "Help" is replaced by an appropriate -// help string. The names of the variable labels of the http_requests_total -// CounterVec are "method" (get, post, etc.), and "code" (HTTP status code). -// -// If InstrumentHandlerWithOpts is called as follows, it mimics exactly the -// behavior of InstrumentHandler: -// -// prometheus.InstrumentHandlerWithOpts( -// prometheus.SummaryOpts{ -// Subsystem: "http", -// ConstLabels: prometheus.Labels{"handler": handlerName}, -// }, -// handler, -// ) -// -// Technical detail: "requests_total" is a CounterVec, not a SummaryVec, so it -// cannot use SummaryOpts. Instead, a CounterOpts struct is created internally, -// and all its fields are set to the equally named fields in the provided -// SummaryOpts. -// -// Deprecated: InstrumentHandlerWithOpts is deprecated for the same reasons as -// InstrumentHandler is. Use the tooling provided in package promhttp instead. -func InstrumentHandlerWithOpts(opts SummaryOpts, handler http.Handler) http.HandlerFunc { - return InstrumentHandlerFuncWithOpts(opts, handler.ServeHTTP) -} - -// InstrumentHandlerFuncWithOpts works like InstrumentHandlerFunc (and shares -// the same issues) but provides more flexibility (at the cost of a more complex -// call syntax). See InstrumentHandlerWithOpts for details how the provided -// SummaryOpts are used. -// -// Deprecated: InstrumentHandlerFuncWithOpts is deprecated for the same reasons -// as InstrumentHandler is. Use the tooling provided in package promhttp instead. -func InstrumentHandlerFuncWithOpts(opts SummaryOpts, handlerFunc func(http.ResponseWriter, *http.Request)) http.HandlerFunc { - reqCnt := NewCounterVec( - CounterOpts{ - Namespace: opts.Namespace, - Subsystem: opts.Subsystem, - Name: "requests_total", - Help: "Total number of HTTP requests made.", - ConstLabels: opts.ConstLabels, - }, - instLabels, - ) - if err := Register(reqCnt); err != nil { - if are, ok := err.(AlreadyRegisteredError); ok { - reqCnt = are.ExistingCollector.(*CounterVec) - } else { - panic(err) - } - } - - opts.Name = "request_duration_microseconds" - opts.Help = "The HTTP request latencies in microseconds." - reqDur := NewSummary(opts) - if err := Register(reqDur); err != nil { - if are, ok := err.(AlreadyRegisteredError); ok { - reqDur = are.ExistingCollector.(Summary) - } else { - panic(err) - } - } - - opts.Name = "request_size_bytes" - opts.Help = "The HTTP request sizes in bytes." - reqSz := NewSummary(opts) - if err := Register(reqSz); err != nil { - if are, ok := err.(AlreadyRegisteredError); ok { - reqSz = are.ExistingCollector.(Summary) - } else { - panic(err) - } - } - - opts.Name = "response_size_bytes" - opts.Help = "The HTTP response sizes in bytes." - resSz := NewSummary(opts) - if err := Register(resSz); err != nil { - if are, ok := err.(AlreadyRegisteredError); ok { - resSz = are.ExistingCollector.(Summary) - } else { - panic(err) - } - } - - return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { - now := time.Now() - - delegate := &responseWriterDelegator{ResponseWriter: w} - out := computeApproximateRequestSize(r) - - _, cn := w.(http.CloseNotifier) - _, fl := w.(http.Flusher) - _, hj := w.(http.Hijacker) - _, rf := w.(io.ReaderFrom) - var rw http.ResponseWriter - if cn && fl && hj && rf { - rw = &fancyResponseWriterDelegator{delegate} - } else { - rw = delegate - } - handlerFunc(rw, r) - - elapsed := float64(time.Since(now)) / float64(time.Microsecond) - - method := sanitizeMethod(r.Method) - code := sanitizeCode(delegate.status) - reqCnt.WithLabelValues(method, code).Inc() - reqDur.Observe(elapsed) - resSz.Observe(float64(delegate.written)) - reqSz.Observe(float64(<-out)) - }) -} - -func computeApproximateRequestSize(r *http.Request) <-chan int { - // Get URL length in current goroutine for avoiding a race condition. - // HandlerFunc that runs in parallel may modify the URL. - s := 0 - if r.URL != nil { - s += len(r.URL.String()) - } - - out := make(chan int, 1) - - go func() { - s += len(r.Method) - s += len(r.Proto) - for name, values := range r.Header { - s += len(name) - for _, value := range values { - s += len(value) - } - } - s += len(r.Host) - - // N.B. r.Form and r.MultipartForm are assumed to be included in r.URL. - - if r.ContentLength != -1 { - s += int(r.ContentLength) - } - out <- s - close(out) - }() - - return out -} - -type responseWriterDelegator struct { - http.ResponseWriter - - status int - written int64 - wroteHeader bool -} - -func (r *responseWriterDelegator) WriteHeader(code int) { - r.status = code - r.wroteHeader = true - r.ResponseWriter.WriteHeader(code) -} - -func (r *responseWriterDelegator) Write(b []byte) (int, error) { - if !r.wroteHeader { - r.WriteHeader(http.StatusOK) - } - n, err := r.ResponseWriter.Write(b) - r.written += int64(n) - return n, err -} - -type fancyResponseWriterDelegator struct { - *responseWriterDelegator -} - -func (f *fancyResponseWriterDelegator) CloseNotify() <-chan bool { - //lint:ignore SA1019 http.CloseNotifier is deprecated but we don't want to - //remove support from client_golang yet. - return f.ResponseWriter.(http.CloseNotifier).CloseNotify() -} - -func (f *fancyResponseWriterDelegator) Flush() { - f.ResponseWriter.(http.Flusher).Flush() -} - -func (f *fancyResponseWriterDelegator) Hijack() (net.Conn, *bufio.ReadWriter, error) { - return f.ResponseWriter.(http.Hijacker).Hijack() -} - -func (f *fancyResponseWriterDelegator) ReadFrom(r io.Reader) (int64, error) { - if !f.wroteHeader { - f.WriteHeader(http.StatusOK) - } - n, err := f.ResponseWriter.(io.ReaderFrom).ReadFrom(r) - f.written += n - return n, err -} - -func sanitizeMethod(m string) string { - switch m { - case "GET", "get": - return "get" - case "PUT", "put": - return "put" - case "HEAD", "head": - return "head" - case "POST", "post": - return "post" - case "DELETE", "delete": - return "delete" - case "CONNECT", "connect": - return "connect" - case "OPTIONS", "options": - return "options" - case "NOTIFY", "notify": - return "notify" - default: - return strings.ToLower(m) - } -} - -func sanitizeCode(s int) string { - switch s { - case 100: - return "100" - case 101: - return "101" - - case 200: - return "200" - case 201: - return "201" - case 202: - return "202" - case 203: - return "203" - case 204: - return "204" - case 205: - return "205" - case 206: - return "206" - - case 300: - return "300" - case 301: - return "301" - case 302: - return "302" - case 304: - return "304" - case 305: - return "305" - case 307: - return "307" - - case 400: - return "400" - case 401: - return "401" - case 402: - return "402" - case 403: - return "403" - case 404: - return "404" - case 405: - return "405" - case 406: - return "406" - case 407: - return "407" - case 408: - return "408" - case 409: - return "409" - case 410: - return "410" - case 411: - return "411" - case 412: - return "412" - case 413: - return "413" - case 414: - return "414" - case 415: - return "415" - case 416: - return "416" - case 417: - return "417" - case 418: - return "418" - - case 500: - return "500" - case 501: - return "501" - case 502: - return "502" - case 503: - return "503" - case 504: - return "504" - case 505: - return "505" - - case 428: - return "428" - case 429: - return "429" - case 431: - return "431" - case 511: - return "511" - - default: - return strconv.Itoa(s) - } -} - -// gzipAccepted returns whether the client will accept gzip-encoded content. -func gzipAccepted(header http.Header) bool { - a := header.Get(acceptEncodingHeader) - parts := strings.Split(a, ",") - for _, part := range parts { - part = strings.TrimSpace(part) - if part == "gzip" || strings.HasPrefix(part, "gzip;") { - return true - } - } - return false -} - -// httpError removes any content-encoding header and then calls http.Error with -// the provided error and http.StatusInternalServerErrer. Error contents is -// supposed to be uncompressed plain text. However, same as with a plain -// http.Error, any header settings will be void if the header has already been -// sent. The error message will still be written to the writer, but it will -// probably be of limited use. -func httpError(rsp http.ResponseWriter, err error) { - rsp.Header().Del(contentEncodingHeader) - http.Error( - rsp, - "An error has occurred while serving metrics:\n\n"+err.Error(), - http.StatusInternalServerError, - ) -} diff --git a/prometheus/http_test.go b/prometheus/http_test.go deleted file mode 100644 index dd89ccf..0000000 --- a/prometheus/http_test.go +++ /dev/null @@ -1,164 +0,0 @@ -// Copyright 2014 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 prometheus - -import ( - "net/http" - "net/http/httptest" - "testing" - "time" - - dto "github.com/prometheus/client_model/go" -) - -type respBody string - -func (b respBody) ServeHTTP(w http.ResponseWriter, r *http.Request) { - w.WriteHeader(http.StatusTeapot) - w.Write([]byte(b)) -} - -func nowSeries(t ...time.Time) nower { - return nowFunc(func() time.Time { - defer func() { - t = t[1:] - }() - - return t[0] - }) -} - -func TestInstrumentHandler(t *testing.T) { - defer func(n nower) { - now = n.(nower) - }(now) - - instant := time.Now() - end := instant.Add(30 * time.Second) - now = nowSeries(instant, end) - body := respBody("Howdy there!") - - hndlr := InstrumentHandler("test-handler", body) - - opts := SummaryOpts{ - Subsystem: "http", - ConstLabels: Labels{"handler": "test-handler"}, - Objectives: map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001}, - } - - reqCnt := NewCounterVec( - CounterOpts{ - Namespace: opts.Namespace, - Subsystem: opts.Subsystem, - Name: "requests_total", - Help: "Total number of HTTP requests made.", - ConstLabels: opts.ConstLabels, - }, - instLabels, - ) - err := Register(reqCnt) - if err == nil { - t.Fatal("expected reqCnt to be registered already") - } - if are, ok := err.(AlreadyRegisteredError); ok { - reqCnt = are.ExistingCollector.(*CounterVec) - } else { - t.Fatal("unexpected registration error:", err) - } - - opts.Name = "request_duration_microseconds" - opts.Help = "The HTTP request latencies in microseconds." - reqDur := NewSummary(opts) - err = Register(reqDur) - if err == nil { - t.Fatal("expected reqDur to be registered already") - } - if are, ok := err.(AlreadyRegisteredError); ok { - reqDur = are.ExistingCollector.(Summary) - } else { - t.Fatal("unexpected registration error:", err) - } - - opts.Name = "request_size_bytes" - opts.Help = "The HTTP request sizes in bytes." - reqSz := NewSummary(opts) - err = Register(reqSz) - if err == nil { - t.Fatal("expected reqSz to be registered already") - } - if _, ok := err.(AlreadyRegisteredError); !ok { - t.Fatal("unexpected registration error:", err) - } - - opts.Name = "response_size_bytes" - opts.Help = "The HTTP response sizes in bytes." - resSz := NewSummary(opts) - err = Register(resSz) - if err == nil { - t.Fatal("expected resSz to be registered already") - } - if _, ok := err.(AlreadyRegisteredError); !ok { - t.Fatal("unexpected registration error:", err) - } - - reqCnt.Reset() - - resp := httptest.NewRecorder() - req := &http.Request{ - Method: "GET", - } - - hndlr.ServeHTTP(resp, req) - - if resp.Code != http.StatusTeapot { - t.Fatalf("expected status %d, got %d", http.StatusTeapot, resp.Code) - } - if resp.Body.String() != "Howdy there!" { - t.Fatalf("expected body %s, got %s", "Howdy there!", resp.Body.String()) - } - - out := &dto.Metric{} - reqDur.Write(out) - if want, got := "test-handler", out.Label[0].GetValue(); want != got { - t.Errorf("want label value %q in reqDur, got %q", want, got) - } - if want, got := uint64(1), out.Summary.GetSampleCount(); want != got { - t.Errorf("want sample count %d in reqDur, got %d", want, got) - } - - out.Reset() - if want, got := 1, len(reqCnt.metricMap.metrics); want != got { - t.Errorf("want %d children in reqCnt, got %d", want, got) - } - cnt, err := reqCnt.GetMetricWithLabelValues("get", "418") - if err != nil { - t.Fatal(err) - } - cnt.Write(out) - if want, got := "418", out.Label[0].GetValue(); want != got { - t.Errorf("want label value %q in reqCnt, got %q", want, got) - } - if want, got := "test-handler", out.Label[1].GetValue(); want != got { - t.Errorf("want label value %q in reqCnt, got %q", want, got) - } - if want, got := "get", out.Label[2].GetValue(); want != got { - t.Errorf("want label value %q in reqCnt, got %q", want, got) - } - if out.Counter == nil { - t.Fatal("expected non-nil counter in reqCnt") - } - if want, got := 1., out.Counter.GetValue(); want != got { - t.Errorf("want reqCnt of %f, got %f", want, got) - } -} diff --git a/prometheus/push/deprecated.go b/prometheus/push/deprecated.go deleted file mode 100644 index 3d62b57..0000000 --- a/prometheus/push/deprecated.go +++ /dev/null @@ -1,172 +0,0 @@ -// Copyright 2018 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 push - -// This file contains only deprecated code. Remove after v0.9 is released. - -import ( - "bytes" - "fmt" - "io/ioutil" - "net/http" - "net/url" - "os" - "strings" - - "github.com/prometheus/common/expfmt" - "github.com/prometheus/common/model" - - "github.com/prometheus/client_golang/prometheus" -) - -// FromGatherer triggers a metric collection by the provided Gatherer (which is -// usually implemented by a prometheus.Registry) and pushes all gathered metrics -// to the Pushgateway specified by url, using the provided job name and the -// (optional) further grouping labels (the grouping map may be nil). See the -// Pushgateway documentation for detailed implications of the job and other -// grouping labels. Neither the job name nor any grouping label value may -// contain a "/". The metrics pushed must not contain a job label of their own -// nor any of the grouping labels. -// -// You can use just host:port or ip:port as url, in which case 'http://' is -// added automatically. You can also include the schema in the URL. However, do -// not include the '/metrics/jobs/...' part. -// -// Note that all previously pushed metrics with the same job and other grouping -// labels will be replaced with the metrics pushed by this call. (It uses HTTP -// method 'PUT' to push to the Pushgateway.) -// -// Deprecated: Please use a Pusher created with New instead. -func FromGatherer(job string, grouping map[string]string, url string, g prometheus.Gatherer) error { - return push(job, grouping, url, g, "PUT") -} - -// AddFromGatherer works like FromGatherer, but only previously pushed metrics -// with the same name (and the same job and other grouping labels) will be -// replaced. (It uses HTTP method 'POST' to push to the Pushgateway.) -// -// Deprecated: Please use a Pusher created with New instead. -func AddFromGatherer(job string, grouping map[string]string, url string, g prometheus.Gatherer) error { - return push(job, grouping, url, g, "POST") -} - -func push(job string, grouping map[string]string, pushURL string, g prometheus.Gatherer, method string) error { - if !strings.Contains(pushURL, "://") { - pushURL = "http://" + pushURL - } - if strings.HasSuffix(pushURL, "/") { - pushURL = pushURL[:len(pushURL)-1] - } - - if strings.Contains(job, "/") { - return fmt.Errorf("job contains '/': %s", job) - } - urlComponents := []string{url.QueryEscape(job)} - for ln, lv := range grouping { - if !model.LabelName(ln).IsValid() { - return fmt.Errorf("grouping label has invalid name: %s", ln) - } - if strings.Contains(lv, "/") { - return fmt.Errorf("value of grouping label %s contains '/': %s", ln, lv) - } - urlComponents = append(urlComponents, ln, lv) - } - pushURL = fmt.Sprintf("%s/metrics/job/%s", pushURL, strings.Join(urlComponents, "/")) - - mfs, err := g.Gather() - if err != nil { - return err - } - buf := &bytes.Buffer{} - enc := expfmt.NewEncoder(buf, expfmt.FmtProtoDelim) - // Check for pre-existing grouping labels: - for _, mf := range mfs { - for _, m := range mf.GetMetric() { - for _, l := range m.GetLabel() { - if l.GetName() == "job" { - return fmt.Errorf("pushed metric %s (%s) already contains a job label", mf.GetName(), m) - } - if _, ok := grouping[l.GetName()]; ok { - return fmt.Errorf( - "pushed metric %s (%s) already contains grouping label %s", - mf.GetName(), m, l.GetName(), - ) - } - } - } - enc.Encode(mf) - } - req, err := http.NewRequest(method, pushURL, buf) - if err != nil { - return err - } - req.Header.Set(contentTypeHeader, string(expfmt.FmtProtoDelim)) - resp, err := http.DefaultClient.Do(req) - if err != nil { - return err - } - defer resp.Body.Close() - if resp.StatusCode != 202 { - body, _ := ioutil.ReadAll(resp.Body) // Ignore any further error as this is for an error message only. - return fmt.Errorf("unexpected status code %d while pushing to %s: %s", resp.StatusCode, pushURL, body) - } - return nil -} - -// Collectors works like FromGatherer, but it does not use a Gatherer. Instead, -// it collects from the provided collectors directly. It is a convenient way to -// push only a few metrics. -// -// Deprecated: Please use a Pusher created with New instead. -func Collectors(job string, grouping map[string]string, url string, collectors ...prometheus.Collector) error { - return pushCollectors(job, grouping, url, "PUT", collectors...) -} - -// AddCollectors works like AddFromGatherer, but it does not use a Gatherer. -// Instead, it collects from the provided collectors directly. It is a -// convenient way to push only a few metrics. -// -// Deprecated: Please use a Pusher created with New instead. -func AddCollectors(job string, grouping map[string]string, url string, collectors ...prometheus.Collector) error { - return pushCollectors(job, grouping, url, "POST", collectors...) -} - -func pushCollectors(job string, grouping map[string]string, url, method string, collectors ...prometheus.Collector) error { - r := prometheus.NewRegistry() - for _, collector := range collectors { - if err := r.Register(collector); err != nil { - return err - } - } - return push(job, grouping, url, r, method) -} - -// HostnameGroupingKey returns a label map with the only entry -// {instance=""}. This can be conveniently used as the grouping -// parameter if metrics should be pushed with the hostname as label. The -// returned map is created upon each call so that the caller is free to add more -// labels to the map. -// -// Deprecated: Usually, metrics pushed to the Pushgateway should not be -// host-centric. (You would use https://github.com/prometheus/node_exporter in -// that case.) If you have the need to add the hostname to the grouping key, you -// are probably doing something wrong. See -// https://prometheus.io/docs/practices/pushing/ for details. -func HostnameGroupingKey() map[string]string { - hostname, err := os.Hostname() - if err != nil { - return map[string]string{"instance": "unknown"} - } - return map[string]string{"instance": hostname} -} diff --git a/prometheus/registry_test.go b/prometheus/registry_test.go index 48112ba..3324c7c 100644 --- a/prometheus/registry_test.go +++ b/prometheus/registry_test.go @@ -259,8 +259,9 @@ collected metric "name" { label: label: label: 0.001 { t.Errorf("got sample sum %f for label %c, want %f", got, 'A'+i, want) } - for j, wantQ := range objectives { - ε := DefObjectives[wantQ] + for j, wantQ := range objSlice { + ε := objMap[wantQ] gotQ := *m.Summary.Quantile[j].Quantile gotV := *m.Summary.Quantile[j].Value min, max := getBounds(allVars[i], wantQ, ε)