diff --git a/go.mod b/go.mod index 717ee8ef..7fa5042e 100644 --- a/go.mod +++ b/go.mod @@ -2,11 +2,9 @@ module github.com/prometheus/node_exporter require ( github.com/beevik/ntp v0.2.0 - github.com/beorn7/perks v1.0.0 // indirect github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e github.com/ema/qdisc v0.0.0-20180104102928-b307c22d3ce7 github.com/godbus/dbus v0.0.0-20190402143921-271e53dc4968 - github.com/golang/protobuf v1.3.1 // indirect github.com/google/go-cmp v0.3.0 // indirect github.com/hodgesds/perf-utils v0.0.7 github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect @@ -15,14 +13,13 @@ require ( github.com/mdlayher/genetlink v0.0.0-20181016160152-e97704c1b795 // indirect github.com/mdlayher/netlink v0.0.0-20181210160939-e069752bc835 // indirect github.com/mdlayher/wifi v0.0.0-20180727163819-efdf3f4195d9 - github.com/prometheus/client_golang v0.9.2 + github.com/prometheus/client_golang v1.0.0 github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90 - github.com/prometheus/common v0.3.0 + github.com/prometheus/common v0.4.1 github.com/prometheus/procfs v0.0.2 github.com/siebenmann/go-kstat v0.0.0-20160321171754-d34789b79745 github.com/sirupsen/logrus v1.4.2 // indirect github.com/soundcloud/go-runit v0.0.0-20150630195641-06ad41a06c4a - github.com/stretchr/testify v1.3.0 // indirect go.uber.org/atomic v1.3.2 // indirect go.uber.org/multierr v1.1.0 // indirect golang.org/x/net v0.0.0-20190503192946-f4e77d36d62c // indirect diff --git a/go.sum b/go.sum index e96c2ecf..d7b9a330 100644 --- a/go.sum +++ b/go.sum @@ -30,6 +30,7 @@ github.com/google/go-cmp v0.3.0 h1:crn/baboCvb5fXaQ0IJ1SGTsTVrWpDsCWC8EGETZijY= github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU= github.com/hodgesds/perf-utils v0.0.7 h1:V/5aRKeXn/membOpFdzAgd+fFvmtvTYD6moDuZ7K7SM= github.com/hodgesds/perf-utils v0.0.7/go.mod h1:F6TfvsbtrF88i++hou29dTXlI2sfsJv+gRZDtmTJkAs= +github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU= github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w= github.com/konsorten/go-windows-terminal-sequences v1.0.1 h1:mweAR1A6xJ3oS2pRaGiHgQ4OO8tzTaLawm8vnODuwDk= github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ= @@ -48,23 +49,23 @@ github.com/mdlayher/netlink v0.0.0-20181210160939-e069752bc835 h1:WpZONc7LNdfPrl github.com/mdlayher/netlink v0.0.0-20181210160939-e069752bc835/go.mod h1:a3TlQHkJH2m32RF224Z7LhD5N4mpyR8eUbCoYHywrwg= github.com/mdlayher/wifi v0.0.0-20180727163819-efdf3f4195d9 h1:ag57ienknXLMhoSbkYvaZLF9Taxu9GtBHUJ4jP5ER8s= github.com/mdlayher/wifi v0.0.0-20180727163819-efdf3f4195d9/go.mod h1:Evt/EIne46u9PtQbeTx2NTcqURpr5K4SvKtGmBuDPN8= +github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q= +github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0= github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U= github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0= github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= github.com/prometheus/client_golang v0.9.1 h1:K47Rk0v/fkEfwfQet2KWhscE0cJzjgCCDBG2KHZoVno= github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw= -github.com/prometheus/client_golang v0.9.2 h1:awm861/B8OKDd2I/6o1dy3ra4BamzKhYOiGItCeZ740= -github.com/prometheus/client_golang v0.9.2/go.mod h1:OsXs2jCmiKlQ1lTBmv21f2mNfw4xf/QclQDMrYNZzcM= +github.com/prometheus/client_golang v1.0.0 h1:vrDKnkGzuGvhNAL56c7DBz29ZL+KxnoR0x7enabFceM= +github.com/prometheus/client_golang v1.0.0/go.mod h1:db9x61etRT2tGnBNRi70OPL5FsnadC4Ky3P0J6CfImo= github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910 h1:idejC8f05m9MGOsuEi1ATq9shN03HrxNkD/luQvxCv8= github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo= github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90 h1:S/YWwWx/RA8rT8tKFRuGUZhuA90OyIBpPCXkcbwU8DE= github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA= -github.com/prometheus/common v0.0.0-20181126121408-4724e9255275/go.mod h1:daVV7qP5qjZbuso7PdcryaAu0sAZbrN9i7WWcTMWvro= -github.com/prometheus/common v0.3.0 h1:taZ4h8Tkxv2kNyoSctBvfXEHmBmxrwmIidZTIaHons4= -github.com/prometheus/common v0.3.0/go.mod h1:TNfzLD0ON7rHzMJeJkieUDPYmFC7Snx/y86RQel1bk4= +github.com/prometheus/common v0.4.1 h1:K0MGApIoQvMw27RTdJkPbr3JZ7DNbtxQNyi5STVM6Kw= +github.com/prometheus/common v0.4.1/go.mod h1:TNfzLD0ON7rHzMJeJkieUDPYmFC7Snx/y86RQel1bk4= github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk= -github.com/prometheus/procfs v0.0.0-20181204211112-1dc9a6cbc91a/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk= github.com/prometheus/procfs v0.0.2 h1:6LJUbpNm42llc4HRCuvApCSWB/WfhuNo9K98Q9sNGfs= github.com/prometheus/procfs v0.0.2/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA= github.com/siebenmann/go-kstat v0.0.0-20160321171754-d34789b79745 h1:IuH7WumZNax0D+rEqmy2TyhKCzrtMGqbZO0b8rO00JA= @@ -87,7 +88,6 @@ go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/ golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4= golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= -golang.org/x/net v0.0.0-20181201002055-351d144fa1fc/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4= golang.org/x/net v0.0.0-20190503192946-f4e77d36d62c h1:uOCk1iQW6Vc18bnC13MfzScl+wdKBmM9Y9kU7Z83/lw= golang.org/x/net v0.0.0-20190503192946-f4e77d36d62c/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= golang.org/x/sync v0.0.0-20181108010431-42b317875d0f h1:Bl/8QSvNqXvPGPGXa2z5xUTmV7VDcZyvRZ+QQXkXTZQ= diff --git a/vendor/github.com/prometheus/client_golang/prometheus/build_info.go b/vendor/github.com/prometheus/client_golang/prometheus/build_info.go new file mode 100644 index 00000000..288f0e85 --- /dev/null +++ b/vendor/github.com/prometheus/client_golang/prometheus/build_info.go @@ -0,0 +1,29 @@ +// Copyright 2019 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 go1.12 + +package prometheus + +import "runtime/debug" + +// readBuildInfo is a wrapper around debug.ReadBuildInfo for Go 1.12+. +func readBuildInfo() (path, version, sum string) { + path, version, sum = "unknown", "unknown", "unknown" + if bi, ok := debug.ReadBuildInfo(); ok { + path = bi.Main.Path + version = bi.Main.Version + sum = bi.Main.Sum + } + return +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/build_info_pre_1.12.go b/vendor/github.com/prometheus/client_golang/prometheus/build_info_pre_1.12.go new file mode 100644 index 00000000..6609e287 --- /dev/null +++ b/vendor/github.com/prometheus/client_golang/prometheus/build_info_pre_1.12.go @@ -0,0 +1,22 @@ +// Copyright 2019 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 !go1.12 + +package prometheus + +// readBuildInfo is a wrapper around debug.ReadBuildInfo for Go versions before +// 1.12. Remove this whole file once the minimum supported Go version is 1.12. +func readBuildInfo() (path, version, sum string) { + return "unknown", "unknown", "unknown" +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/collector.go b/vendor/github.com/prometheus/client_golang/prometheus/collector.go index c0d70b2f..1e839650 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/collector.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/collector.go @@ -79,7 +79,7 @@ type Collector interface { // of the Describe method. If a Collector sometimes collects no metrics at all // (for example vectors like CounterVec, GaugeVec, etc., which only collect // metrics after a metric with a fully specified label set has been accessed), -// it might even get registered as an unchecked Collecter (cf. the Register +// it might even get registered as an unchecked Collector (cf. the Register // method of the Registerer interface). Hence, only use this shortcut // implementation of Describe if you are certain to fulfill the contract. // diff --git a/vendor/github.com/prometheus/client_golang/prometheus/doc.go b/vendor/github.com/prometheus/client_golang/prometheus/doc.go index 5d9525de..01977de6 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/doc.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/doc.go @@ -122,13 +122,13 @@ // the Collect method. The Describe method has to return separate Desc // instances, representative of the “throw-away” metrics to be created later. // NewDesc comes in handy to create those Desc instances. Alternatively, you -// could return no Desc at all, which will marke the Collector “unchecked”. No -// checks are porformed at registration time, but metric consistency will still +// could return no Desc at all, which will mark the Collector “unchecked”. No +// checks are performed at registration time, but metric consistency will still // be ensured at scrape time, i.e. any inconsistencies will lead to scrape // errors. Thus, with unchecked Collectors, the responsibility to not collect // metrics that lead to inconsistencies in the total scrape result lies with the // implementer of the Collector. While this is not a desirable state, it is -// sometimes necessary. The typical use case is a situatios where the exact +// sometimes necessary. The typical use case is a situation where the exact // metrics to be returned by a Collector cannot be predicted at registration // time, but the implementer has sufficient knowledge of the whole system to // guarantee metric consistency. @@ -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/vendor/github.com/prometheus/client_golang/prometheus/go_collector.go b/vendor/github.com/prometheus/client_golang/prometheus/go_collector.go index ba3b9333..dc9247fe 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/go_collector.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/go_collector.go @@ -14,9 +14,9 @@ package prometheus import ( - "fmt" "runtime" "runtime/debug" + "sync" "time" ) @@ -26,16 +26,41 @@ type goCollector struct { gcDesc *Desc goInfoDesc *Desc - // metrics to describe and collect - metrics memStatsMetrics + // ms... are memstats related. + msLast *runtime.MemStats // Previously collected memstats. + msLastTimestamp time.Time + msMtx sync.Mutex // Protects msLast and msLastTimestamp. + msMetrics memStatsMetrics + msRead func(*runtime.MemStats) // For mocking in tests. + msMaxWait time.Duration // Wait time for fresh memstats. + msMaxAge time.Duration // Maximum allowed age of old memstats. } -// NewGoCollector returns a collector which exports metrics about the current Go +// NewGoCollector returns a collector that exports metrics about the current Go // process. This includes memory stats. To collect those, runtime.ReadMemStats -// is called. This causes a stop-the-world, which is very short with Go1.9+ -// (~25µs). 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 +// 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. (The problem might be solved +// in Go1.13, see https://github.com/golang/go/issues/19812 for the related Go +// issue.) func NewGoCollector() Collector { return &goCollector{ goroutinesDesc: NewDesc( @@ -54,7 +79,11 @@ func NewGoCollector() Collector { "go_info", "Information about the Go environment.", nil, Labels{"version": runtime.Version()}), - metrics: memStatsMetrics{ + msLast: &runtime.MemStats{}, + msRead: runtime.ReadMemStats, + msMaxWait: time.Second, + msMaxAge: 5 * time.Minute, + msMetrics: memStatsMetrics{ { desc: NewDesc( memstatNamespace("alloc_bytes"), @@ -253,7 +282,7 @@ func NewGoCollector() Collector { } func memstatNamespace(s string) string { - return fmt.Sprintf("go_memstats_%s", s) + return "go_memstats_" + s } // Describe returns all descriptions of the collector. @@ -262,13 +291,27 @@ func (c *goCollector) Describe(ch chan<- *Desc) { ch <- c.threadsDesc ch <- c.gcDesc ch <- c.goInfoDesc - for _, i := range c.metrics { + for _, i := range c.msMetrics { ch <- i.desc } } // Collect returns the current state of all metrics of the collector. func (c *goCollector) Collect(ch chan<- Metric) { + var ( + ms = &runtime.MemStats{} + done = make(chan struct{}) + ) + // Start reading memstats first as it might take a while. + go func() { + c.msRead(ms) + c.msMtx.Lock() + c.msLast = ms + c.msLastTimestamp = time.Now() + c.msMtx.Unlock() + close(done) + }() + ch <- MustNewConstMetric(c.goroutinesDesc, GaugeValue, float64(runtime.NumGoroutine())) n, _ := runtime.ThreadCreateProfile(nil) ch <- MustNewConstMetric(c.threadsDesc, GaugeValue, float64(n)) @@ -286,9 +329,31 @@ func (c *goCollector) Collect(ch chan<- Metric) { ch <- MustNewConstMetric(c.goInfoDesc, GaugeValue, 1) - ms := &runtime.MemStats{} - runtime.ReadMemStats(ms) - for _, i := range c.metrics { + timer := time.NewTimer(c.msMaxWait) + select { + case <-done: // Our own ReadMemStats succeeded in time. Use it. + timer.Stop() // Important for high collection frequencies to not pile up timers. + c.msCollect(ch, ms) + return + case <-timer.C: // Time out, use last memstats if possible. Continue below. + } + c.msMtx.Lock() + if time.Since(c.msLastTimestamp) < c.msMaxAge { + // Last memstats are recent enough. Collect from them under the lock. + c.msCollect(ch, c.msLast) + c.msMtx.Unlock() + return + } + // If we are here, the last memstats are too old or don't exist. We have + // to wait until our own ReadMemStats finally completes. For that to + // happen, we have to release the lock. + c.msMtx.Unlock() + <-done + c.msCollect(ch, ms) +} + +func (c *goCollector) msCollect(ch chan<- Metric, ms *runtime.MemStats) { + for _, i := range c.msMetrics { ch <- MustNewConstMetric(i.desc, i.valType, i.eval(ms)) } } @@ -299,3 +364,33 @@ type memStatsMetrics []struct { eval func(*runtime.MemStats) float64 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)". +// +// 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() Collector { + path, version, sum := readBuildInfo() + c := &selfCollector{MustNewConstMetric( + NewDesc( + "go_build_info", + "Build information about the main Go module.", + nil, Labels{"path": path, "version": version, "checksum": sum}, + ), + GaugeValue, 1)} + c.init(c.self) + return c +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/histogram.go b/vendor/github.com/prometheus/client_golang/prometheus/histogram.go index f88da707..d7ea67bd 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/histogram.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/histogram.go @@ -204,8 +204,8 @@ func newHistogram(desc *Desc, opts HistogramOpts, labelValues ...string) Histogr } } } - // Finally we know the final length of h.upperBounds and can make counts - // for both states: + // Finally we know the final length of h.upperBounds and can make buckets + // for both counts: h.counts[0].buckets = make([]uint64, len(h.upperBounds)) h.counts[1].buckets = make([]uint64, len(h.upperBounds)) @@ -224,18 +224,21 @@ type histogramCounts struct { } type histogram struct { - // countAndHotIdx is a complicated one. For lock-free yet atomic - // observations, we need to save the total count of observations again, - // combined with the index of the currently-hot counts struct, so that - // we can perform the operation on both values atomically. The least - // significant bit defines the hot counts struct. The remaining 63 bits - // represent the total count of observations. This happens under the - // assumption that the 63bit count will never overflow. Rationale: An - // observations takes about 30ns. Let's assume it could happen in - // 10ns. Overflowing the counter will then take at least (2^63)*10ns, - // which is about 3000 years. + // countAndHotIdx enables lock-free writes with use of atomic updates. + // The most significant bit is the hot index [0 or 1] of the count field + // below. Observe calls update the hot one. All remaining bits count the + // number of Observe calls. Observe starts by incrementing this counter, + // and finish by incrementing the count field in the respective + // histogramCounts, as a marker for completion. // - // This has to be first in the struct for 64bit alignment. See + // Calls of the Write method (which are non-mutating reads from the + // perspective of the histogram) swap the hot–cold under the writeMtx + // lock. A cooldown is awaited (while locked) by comparing the number of + // observations with the initiation count. Once they match, then the + // last observation on the now cool one has completed. All cool fields must + // be merged into the new hot before releasing writeMtx. + // + // Fields with atomic access first! See alignment constraint: // http://golang.org/pkg/sync/atomic/#pkg-note-BUG countAndHotIdx uint64 @@ -243,16 +246,14 @@ type histogram struct { desc *Desc writeMtx sync.Mutex // Only used in the Write method. - upperBounds []float64 - // Two counts, one is "hot" for lock-free observations, the other is // "cold" for writing out a dto.Metric. It has to be an array of // pointers to guarantee 64bit alignment of the histogramCounts, see // http://golang.org/pkg/sync/atomic/#pkg-note-BUG. counts [2]*histogramCounts - hotIdx int // Index of currently-hot counts. Only used within Write. - labelPairs []*dto.LabelPair + upperBounds []float64 + labelPairs []*dto.LabelPair } func (h *histogram) Desc() *Desc { @@ -271,11 +272,11 @@ func (h *histogram) Observe(v float64) { // 300 buckets: 154 ns/op linear - binary 61.6 ns/op i := sort.SearchFloat64s(h.upperBounds, v) - // We increment h.countAndHotIdx by 2 so that the counter in the upper - // 63 bits gets incremented by 1. At the same time, we get the new value + // We increment h.countAndHotIdx so that the counter in the lower + // 63 bits gets incremented. At the same time, we get the new value // back, which we can use to find the currently-hot counts. - n := atomic.AddUint64(&h.countAndHotIdx, 2) - hotCounts := h.counts[n%2] + n := atomic.AddUint64(&h.countAndHotIdx, 1) + hotCounts := h.counts[n>>63] if i < len(h.upperBounds) { atomic.AddUint64(&hotCounts.buckets[i], 1) @@ -293,72 +294,43 @@ func (h *histogram) Observe(v float64) { } func (h *histogram) Write(out *dto.Metric) error { - var ( - his = &dto.Histogram{} - buckets = make([]*dto.Bucket, len(h.upperBounds)) - hotCounts, coldCounts *histogramCounts - count uint64 - ) - - // For simplicity, we mutex the rest of this method. It is not in the - // hot path, i.e. Observe is called much more often than Write. The - // complication of making Write lock-free isn't worth it. + // For simplicity, we protect this whole method by a mutex. It is not in + // the hot path, i.e. Observe is called much more often than Write. The + // complication of making Write lock-free isn't worth it, if possible at + // all. h.writeMtx.Lock() defer h.writeMtx.Unlock() - // This is a bit arcane, which is why the following spells out this if - // clause in English: - // - // If the currently-hot counts struct is #0, we atomically increment - // h.countAndHotIdx by 1 so that from now on Observe will use the counts - // struct #1. Furthermore, the atomic increment gives us the new value, - // which, in its most significant 63 bits, tells us the count of - // observations done so far up to and including currently ongoing - // observations still using the counts struct just changed from hot to - // cold. To have a normal uint64 for the count, we bitshift by 1 and - // save the result in count. We also set h.hotIdx to 1 for the next - // Write call, and we will refer to counts #1 as hotCounts and to counts - // #0 as coldCounts. - // - // If the currently-hot counts struct is #1, we do the corresponding - // things the other way round. We have to _decrement_ h.countAndHotIdx - // (which is a bit arcane in itself, as we have to express -1 with an - // unsigned int...). - if h.hotIdx == 0 { - count = atomic.AddUint64(&h.countAndHotIdx, 1) >> 1 - h.hotIdx = 1 - hotCounts = h.counts[1] - coldCounts = h.counts[0] - } else { - count = atomic.AddUint64(&h.countAndHotIdx, ^uint64(0)) >> 1 // Decrement. - h.hotIdx = 0 - hotCounts = h.counts[0] - coldCounts = h.counts[1] - } + // Adding 1<<63 switches the hot index (from 0 to 1 or from 1 to 0) + // without touching the count bits. See the struct comments for a full + // description of the algorithm. + n := atomic.AddUint64(&h.countAndHotIdx, 1<<63) + // count is contained unchanged in the lower 63 bits. + count := n & ((1 << 63) - 1) + // The most significant bit tells us which counts is hot. The complement + // is thus the cold one. + hotCounts := h.counts[n>>63] + coldCounts := h.counts[(^n)>>63] - // Now we have to wait for the now-declared-cold counts to actually cool - // down, i.e. wait for all observations still using it to finish. That's - // the case once the count in the cold counts struct is the same as the - // one atomically retrieved from the upper 63bits of h.countAndHotIdx. - for { - if count == atomic.LoadUint64(&coldCounts.count) { - break - } + // Await cooldown. + for count != atomic.LoadUint64(&coldCounts.count) { runtime.Gosched() // Let observations get work done. } - his.SampleCount = proto.Uint64(count) - his.SampleSum = proto.Float64(math.Float64frombits(atomic.LoadUint64(&coldCounts.sumBits))) + his := &dto.Histogram{ + Bucket: make([]*dto.Bucket, len(h.upperBounds)), + SampleCount: proto.Uint64(count), + SampleSum: proto.Float64(math.Float64frombits(atomic.LoadUint64(&coldCounts.sumBits))), + } var cumCount uint64 for i, upperBound := range h.upperBounds { cumCount += atomic.LoadUint64(&coldCounts.buckets[i]) - buckets[i] = &dto.Bucket{ + his.Bucket[i] = &dto.Bucket{ CumulativeCount: proto.Uint64(cumCount), UpperBound: proto.Float64(upperBound), } } - his.Bucket = buckets out.Histogram = his out.Label = h.labelPairs diff --git a/vendor/github.com/prometheus/client_golang/prometheus/http.go b/vendor/github.com/prometheus/client_golang/prometheus/http.go deleted file mode 100644 index 9f0875bf..00000000 --- a/vendor/github.com/prometheus/client_golang/prometheus/http.go +++ /dev/null @@ -1,504 +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" - contentLengthHeader = "Content-Length" - 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 { - 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/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go b/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go index 55176d58..9b809794 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go @@ -16,8 +16,6 @@ package prometheus import ( "errors" "os" - - "github.com/prometheus/procfs" ) type processCollector struct { @@ -59,20 +57,9 @@ type ProcessCollectorOpts struct { // collector for the current process with an empty namespace string and no error // reporting. // -// Currently, the collector depends on a Linux-style proc filesystem and -// therefore only exports metrics for Linux. -// -// Note: An older version of this function had the following signature: -// -// NewProcessCollector(pid int, namespace string) Collector -// -// Most commonly, it was called as -// -// NewProcessCollector(os.Getpid(), "") -// -// The following call of the current version is equivalent to the above: -// -// NewProcessCollector(ProcessCollectorOpts{}) +// 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) Collector { ns := "" if len(opts.Namespace) > 0 { @@ -126,7 +113,7 @@ func NewProcessCollector(opts ProcessCollectorOpts) Collector { } // Set up process metric collection if supported by the runtime. - if _, err := procfs.NewStat(); err == nil { + if canCollectProcess() { c.collectFn = c.processCollect } else { c.collectFn = func(ch chan<- Metric) { @@ -153,46 +140,6 @@ func (c *processCollector) Collect(ch chan<- Metric) { c.collectFn(ch) } -func (c *processCollector) processCollect(ch chan<- Metric) { - pid, err := c.pidFn() - if err != nil { - c.reportError(ch, nil, err) - return - } - - p, err := procfs.NewProc(pid) - if err != nil { - c.reportError(ch, nil, err) - return - } - - if stat, err := p.NewStat(); err == nil { - ch <- MustNewConstMetric(c.cpuTotal, CounterValue, stat.CPUTime()) - ch <- MustNewConstMetric(c.vsize, GaugeValue, float64(stat.VirtualMemory())) - ch <- MustNewConstMetric(c.rss, GaugeValue, float64(stat.ResidentMemory())) - if startTime, err := stat.StartTime(); err == nil { - ch <- MustNewConstMetric(c.startTime, GaugeValue, startTime) - } else { - c.reportError(ch, c.startTime, err) - } - } else { - c.reportError(ch, nil, err) - } - - if fds, err := p.FileDescriptorsLen(); err == nil { - ch <- MustNewConstMetric(c.openFDs, GaugeValue, float64(fds)) - } else { - c.reportError(ch, c.openFDs, err) - } - - if limits, err := p.NewLimits(); err == nil { - ch <- MustNewConstMetric(c.maxFDs, GaugeValue, float64(limits.OpenFiles)) - ch <- MustNewConstMetric(c.maxVsize, GaugeValue, float64(limits.AddressSpace)) - } else { - c.reportError(ch, nil, err) - } -} - func (c *processCollector) reportError(ch chan<- Metric, desc *Desc, err error) { if !c.reportErrors { return diff --git a/vendor/github.com/prometheus/client_golang/prometheus/process_collector_other.go b/vendor/github.com/prometheus/client_golang/prometheus/process_collector_other.go new file mode 100644 index 00000000..3117461c --- /dev/null +++ b/vendor/github.com/prometheus/client_golang/prometheus/process_collector_other.go @@ -0,0 +1,65 @@ +// Copyright 2019 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 !windows + +package prometheus + +import ( + "github.com/prometheus/procfs" +) + +func canCollectProcess() bool { + _, err := procfs.NewDefaultFS() + return err == nil +} + +func (c *processCollector) processCollect(ch chan<- Metric) { + pid, err := c.pidFn() + if err != nil { + c.reportError(ch, nil, err) + return + } + + p, err := procfs.NewProc(pid) + if err != nil { + c.reportError(ch, nil, err) + return + } + + if stat, err := p.Stat(); err == nil { + ch <- MustNewConstMetric(c.cpuTotal, CounterValue, stat.CPUTime()) + ch <- MustNewConstMetric(c.vsize, GaugeValue, float64(stat.VirtualMemory())) + ch <- MustNewConstMetric(c.rss, GaugeValue, float64(stat.ResidentMemory())) + if startTime, err := stat.StartTime(); err == nil { + ch <- MustNewConstMetric(c.startTime, GaugeValue, startTime) + } else { + c.reportError(ch, c.startTime, err) + } + } else { + c.reportError(ch, nil, err) + } + + if fds, err := p.FileDescriptorsLen(); err == nil { + ch <- MustNewConstMetric(c.openFDs, GaugeValue, float64(fds)) + } else { + c.reportError(ch, c.openFDs, err) + } + + if limits, err := p.Limits(); err == nil { + ch <- MustNewConstMetric(c.maxFDs, GaugeValue, float64(limits.OpenFiles)) + ch <- MustNewConstMetric(c.maxVsize, GaugeValue, float64(limits.AddressSpace)) + } else { + c.reportError(ch, nil, err) + } +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/process_collector_windows.go b/vendor/github.com/prometheus/client_golang/prometheus/process_collector_windows.go new file mode 100644 index 00000000..e0b935d1 --- /dev/null +++ b/vendor/github.com/prometheus/client_golang/prometheus/process_collector_windows.go @@ -0,0 +1,112 @@ +// Copyright 2019 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 ( + "syscall" + "unsafe" + + "golang.org/x/sys/windows" +) + +func canCollectProcess() bool { + return true +} + +var ( + modpsapi = syscall.NewLazyDLL("psapi.dll") + modkernel32 = syscall.NewLazyDLL("kernel32.dll") + + procGetProcessMemoryInfo = modpsapi.NewProc("GetProcessMemoryInfo") + procGetProcessHandleCount = modkernel32.NewProc("GetProcessHandleCount") +) + +type processMemoryCounters struct { + // https://docs.microsoft.com/en-us/windows/desktop/api/psapi/ns-psapi-_process_memory_counters_ex + _ uint32 + PageFaultCount uint32 + PeakWorkingSetSize uint64 + WorkingSetSize uint64 + QuotaPeakPagedPoolUsage uint64 + QuotaPagedPoolUsage uint64 + QuotaPeakNonPagedPoolUsage uint64 + QuotaNonPagedPoolUsage uint64 + PagefileUsage uint64 + PeakPagefileUsage uint64 + PrivateUsage uint64 +} + +func getProcessMemoryInfo(handle windows.Handle) (processMemoryCounters, error) { + mem := processMemoryCounters{} + r1, _, err := procGetProcessMemoryInfo.Call( + uintptr(handle), + uintptr(unsafe.Pointer(&mem)), + uintptr(unsafe.Sizeof(mem)), + ) + if r1 != 1 { + return mem, err + } else { + return mem, nil + } +} + +func getProcessHandleCount(handle windows.Handle) (uint32, error) { + var count uint32 + r1, _, err := procGetProcessHandleCount.Call( + uintptr(handle), + uintptr(unsafe.Pointer(&count)), + ) + if r1 != 1 { + return 0, err + } else { + return count, nil + } +} + +func (c *processCollector) processCollect(ch chan<- Metric) { + h, err := windows.GetCurrentProcess() + if err != nil { + c.reportError(ch, nil, err) + return + } + + var startTime, exitTime, kernelTime, userTime windows.Filetime + err = windows.GetProcessTimes(h, &startTime, &exitTime, &kernelTime, &userTime) + if err != nil { + c.reportError(ch, nil, err) + return + } + ch <- MustNewConstMetric(c.startTime, GaugeValue, float64(startTime.Nanoseconds()/1e9)) + ch <- MustNewConstMetric(c.cpuTotal, CounterValue, fileTimeToSeconds(kernelTime)+fileTimeToSeconds(userTime)) + + mem, err := getProcessMemoryInfo(h) + if err != nil { + c.reportError(ch, nil, err) + return + } + ch <- MustNewConstMetric(c.vsize, GaugeValue, float64(mem.PrivateUsage)) + ch <- MustNewConstMetric(c.rss, GaugeValue, float64(mem.WorkingSetSize)) + + handles, err := getProcessHandleCount(h) + if err != nil { + c.reportError(ch, nil, err) + return + } + ch <- MustNewConstMetric(c.openFDs, GaugeValue, float64(handles)) + ch <- MustNewConstMetric(c.maxFDs, GaugeValue, float64(16*1024*1024)) // Windows has a hard-coded max limit, not per-process. +} + +func fileTimeToSeconds(ft windows.Filetime) float64 { + return float64(uint64(ft.HighDateTime)<<32+uint64(ft.LowDateTime)) / 1e7 +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator.go b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator.go index 67b56d37..fa535684 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator.go @@ -38,7 +38,6 @@ type delegator interface { type responseWriterDelegator struct { http.ResponseWriter - handler, method string status int written int64 wroteHeader bool @@ -75,8 +74,11 @@ type closeNotifierDelegator struct{ *responseWriterDelegator } type flusherDelegator struct{ *responseWriterDelegator } type hijackerDelegator struct{ *responseWriterDelegator } type readerFromDelegator struct{ *responseWriterDelegator } +type pusherDelegator struct{ *responseWriterDelegator } func (d closeNotifierDelegator) CloseNotify() <-chan bool { + //lint:ignore SA1019 http.CloseNotifier is deprecated but we don't want to + //remove support from client_golang yet. return d.ResponseWriter.(http.CloseNotifier).CloseNotify() } func (d flusherDelegator) Flush() { @@ -93,6 +95,9 @@ func (d readerFromDelegator) ReadFrom(re io.Reader) (int64, error) { d.written += n return n, err } +func (d pusherDelegator) Push(target string, opts *http.PushOptions) error { + return d.ResponseWriter.(http.Pusher).Push(target, opts) +} var pickDelegator = make([]func(*responseWriterDelegator) delegator, 32) @@ -196,4 +201,157 @@ func init() { http.CloseNotifier }{d, readerFromDelegator{d}, hijackerDelegator{d}, flusherDelegator{d}, closeNotifierDelegator{d}} } + pickDelegator[pusher] = func(d *responseWriterDelegator) delegator { // 16 + return pusherDelegator{d} + } + pickDelegator[pusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 17 + return struct { + *responseWriterDelegator + http.Pusher + http.CloseNotifier + }{d, pusherDelegator{d}, closeNotifierDelegator{d}} + } + pickDelegator[pusher+flusher] = func(d *responseWriterDelegator) delegator { // 18 + return struct { + *responseWriterDelegator + http.Pusher + http.Flusher + }{d, pusherDelegator{d}, flusherDelegator{d}} + } + pickDelegator[pusher+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 19 + return struct { + *responseWriterDelegator + http.Pusher + http.Flusher + http.CloseNotifier + }{d, pusherDelegator{d}, flusherDelegator{d}, closeNotifierDelegator{d}} + } + pickDelegator[pusher+hijacker] = func(d *responseWriterDelegator) delegator { // 20 + return struct { + *responseWriterDelegator + http.Pusher + http.Hijacker + }{d, pusherDelegator{d}, hijackerDelegator{d}} + } + pickDelegator[pusher+hijacker+closeNotifier] = func(d *responseWriterDelegator) delegator { // 21 + return struct { + *responseWriterDelegator + http.Pusher + http.Hijacker + http.CloseNotifier + }{d, pusherDelegator{d}, hijackerDelegator{d}, closeNotifierDelegator{d}} + } + pickDelegator[pusher+hijacker+flusher] = func(d *responseWriterDelegator) delegator { // 22 + return struct { + *responseWriterDelegator + http.Pusher + http.Hijacker + http.Flusher + }{d, pusherDelegator{d}, hijackerDelegator{d}, flusherDelegator{d}} + } + pickDelegator[pusher+hijacker+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { //23 + return struct { + *responseWriterDelegator + http.Pusher + http.Hijacker + http.Flusher + http.CloseNotifier + }{d, pusherDelegator{d}, hijackerDelegator{d}, flusherDelegator{d}, closeNotifierDelegator{d}} + } + pickDelegator[pusher+readerFrom] = func(d *responseWriterDelegator) delegator { // 24 + return struct { + *responseWriterDelegator + http.Pusher + io.ReaderFrom + }{d, pusherDelegator{d}, readerFromDelegator{d}} + } + pickDelegator[pusher+readerFrom+closeNotifier] = func(d *responseWriterDelegator) delegator { // 25 + return struct { + *responseWriterDelegator + http.Pusher + io.ReaderFrom + http.CloseNotifier + }{d, pusherDelegator{d}, readerFromDelegator{d}, closeNotifierDelegator{d}} + } + pickDelegator[pusher+readerFrom+flusher] = func(d *responseWriterDelegator) delegator { // 26 + return struct { + *responseWriterDelegator + http.Pusher + io.ReaderFrom + http.Flusher + }{d, pusherDelegator{d}, readerFromDelegator{d}, flusherDelegator{d}} + } + pickDelegator[pusher+readerFrom+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 27 + return struct { + *responseWriterDelegator + http.Pusher + io.ReaderFrom + http.Flusher + http.CloseNotifier + }{d, pusherDelegator{d}, readerFromDelegator{d}, flusherDelegator{d}, closeNotifierDelegator{d}} + } + pickDelegator[pusher+readerFrom+hijacker] = func(d *responseWriterDelegator) delegator { // 28 + return struct { + *responseWriterDelegator + http.Pusher + io.ReaderFrom + http.Hijacker + }{d, pusherDelegator{d}, readerFromDelegator{d}, hijackerDelegator{d}} + } + pickDelegator[pusher+readerFrom+hijacker+closeNotifier] = func(d *responseWriterDelegator) delegator { // 29 + return struct { + *responseWriterDelegator + http.Pusher + io.ReaderFrom + http.Hijacker + http.CloseNotifier + }{d, pusherDelegator{d}, readerFromDelegator{d}, hijackerDelegator{d}, closeNotifierDelegator{d}} + } + pickDelegator[pusher+readerFrom+hijacker+flusher] = func(d *responseWriterDelegator) delegator { // 30 + return struct { + *responseWriterDelegator + http.Pusher + io.ReaderFrom + http.Hijacker + http.Flusher + }{d, pusherDelegator{d}, readerFromDelegator{d}, hijackerDelegator{d}, flusherDelegator{d}} + } + pickDelegator[pusher+readerFrom+hijacker+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 31 + return struct { + *responseWriterDelegator + http.Pusher + io.ReaderFrom + http.Hijacker + http.Flusher + http.CloseNotifier + }{d, pusherDelegator{d}, readerFromDelegator{d}, hijackerDelegator{d}, flusherDelegator{d}, closeNotifierDelegator{d}} + } +} + +func newDelegator(w http.ResponseWriter, observeWriteHeaderFunc func(int)) delegator { + d := &responseWriterDelegator{ + ResponseWriter: w, + observeWriteHeader: observeWriteHeaderFunc, + } + + id := 0 + //lint:ignore SA1019 http.CloseNotifier is deprecated but we don't want to + //remove support from client_golang yet. + if _, ok := w.(http.CloseNotifier); ok { + id += closeNotifier + } + if _, ok := w.(http.Flusher); ok { + id += flusher + } + if _, ok := w.(http.Hijacker); ok { + id += hijacker + } + if _, ok := w.(io.ReaderFrom); ok { + id += readerFrom + } + if _, ok := w.(http.Pusher); ok { + id += pusher + } + + return pickDelegator[id](d) } diff --git a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator_1_8.go b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator_1_8.go deleted file mode 100644 index 31a70695..00000000 --- a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator_1_8.go +++ /dev/null @@ -1,181 +0,0 @@ -// Copyright 2017 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 go1.8 - -package promhttp - -import ( - "io" - "net/http" -) - -type pusherDelegator struct{ *responseWriterDelegator } - -func (d pusherDelegator) Push(target string, opts *http.PushOptions) error { - return d.ResponseWriter.(http.Pusher).Push(target, opts) -} - -func init() { - pickDelegator[pusher] = func(d *responseWriterDelegator) delegator { // 16 - return pusherDelegator{d} - } - pickDelegator[pusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 17 - return struct { - *responseWriterDelegator - http.Pusher - http.CloseNotifier - }{d, pusherDelegator{d}, closeNotifierDelegator{d}} - } - pickDelegator[pusher+flusher] = func(d *responseWriterDelegator) delegator { // 18 - return struct { - *responseWriterDelegator - http.Pusher - http.Flusher - }{d, pusherDelegator{d}, flusherDelegator{d}} - } - pickDelegator[pusher+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 19 - return struct { - *responseWriterDelegator - http.Pusher - http.Flusher - http.CloseNotifier - }{d, pusherDelegator{d}, flusherDelegator{d}, closeNotifierDelegator{d}} - } - pickDelegator[pusher+hijacker] = func(d *responseWriterDelegator) delegator { // 20 - return struct { - *responseWriterDelegator - http.Pusher - http.Hijacker - }{d, pusherDelegator{d}, hijackerDelegator{d}} - } - pickDelegator[pusher+hijacker+closeNotifier] = func(d *responseWriterDelegator) delegator { // 21 - return struct { - *responseWriterDelegator - http.Pusher - http.Hijacker - http.CloseNotifier - }{d, pusherDelegator{d}, hijackerDelegator{d}, closeNotifierDelegator{d}} - } - pickDelegator[pusher+hijacker+flusher] = func(d *responseWriterDelegator) delegator { // 22 - return struct { - *responseWriterDelegator - http.Pusher - http.Hijacker - http.Flusher - }{d, pusherDelegator{d}, hijackerDelegator{d}, flusherDelegator{d}} - } - pickDelegator[pusher+hijacker+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { //23 - return struct { - *responseWriterDelegator - http.Pusher - http.Hijacker - http.Flusher - http.CloseNotifier - }{d, pusherDelegator{d}, hijackerDelegator{d}, flusherDelegator{d}, closeNotifierDelegator{d}} - } - pickDelegator[pusher+readerFrom] = func(d *responseWriterDelegator) delegator { // 24 - return struct { - *responseWriterDelegator - http.Pusher - io.ReaderFrom - }{d, pusherDelegator{d}, readerFromDelegator{d}} - } - pickDelegator[pusher+readerFrom+closeNotifier] = func(d *responseWriterDelegator) delegator { // 25 - return struct { - *responseWriterDelegator - http.Pusher - io.ReaderFrom - http.CloseNotifier - }{d, pusherDelegator{d}, readerFromDelegator{d}, closeNotifierDelegator{d}} - } - pickDelegator[pusher+readerFrom+flusher] = func(d *responseWriterDelegator) delegator { // 26 - return struct { - *responseWriterDelegator - http.Pusher - io.ReaderFrom - http.Flusher - }{d, pusherDelegator{d}, readerFromDelegator{d}, flusherDelegator{d}} - } - pickDelegator[pusher+readerFrom+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 27 - return struct { - *responseWriterDelegator - http.Pusher - io.ReaderFrom - http.Flusher - http.CloseNotifier - }{d, pusherDelegator{d}, readerFromDelegator{d}, flusherDelegator{d}, closeNotifierDelegator{d}} - } - pickDelegator[pusher+readerFrom+hijacker] = func(d *responseWriterDelegator) delegator { // 28 - return struct { - *responseWriterDelegator - http.Pusher - io.ReaderFrom - http.Hijacker - }{d, pusherDelegator{d}, readerFromDelegator{d}, hijackerDelegator{d}} - } - pickDelegator[pusher+readerFrom+hijacker+closeNotifier] = func(d *responseWriterDelegator) delegator { // 29 - return struct { - *responseWriterDelegator - http.Pusher - io.ReaderFrom - http.Hijacker - http.CloseNotifier - }{d, pusherDelegator{d}, readerFromDelegator{d}, hijackerDelegator{d}, closeNotifierDelegator{d}} - } - pickDelegator[pusher+readerFrom+hijacker+flusher] = func(d *responseWriterDelegator) delegator { // 30 - return struct { - *responseWriterDelegator - http.Pusher - io.ReaderFrom - http.Hijacker - http.Flusher - }{d, pusherDelegator{d}, readerFromDelegator{d}, hijackerDelegator{d}, flusherDelegator{d}} - } - pickDelegator[pusher+readerFrom+hijacker+flusher+closeNotifier] = func(d *responseWriterDelegator) delegator { // 31 - return struct { - *responseWriterDelegator - http.Pusher - io.ReaderFrom - http.Hijacker - http.Flusher - http.CloseNotifier - }{d, pusherDelegator{d}, readerFromDelegator{d}, hijackerDelegator{d}, flusherDelegator{d}, closeNotifierDelegator{d}} - } -} - -func newDelegator(w http.ResponseWriter, observeWriteHeaderFunc func(int)) delegator { - d := &responseWriterDelegator{ - ResponseWriter: w, - observeWriteHeader: observeWriteHeaderFunc, - } - - id := 0 - if _, ok := w.(http.CloseNotifier); ok { - id += closeNotifier - } - if _, ok := w.(http.Flusher); ok { - id += flusher - } - if _, ok := w.(http.Hijacker); ok { - id += hijacker - } - if _, ok := w.(io.ReaderFrom); ok { - id += readerFrom - } - if _, ok := w.(http.Pusher); ok { - id += pusher - } - - return pickDelegator[id](d) -} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator_pre_1_8.go b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator_pre_1_8.go deleted file mode 100644 index 8bb9b8b6..00000000 --- a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator_pre_1_8.go +++ /dev/null @@ -1,44 +0,0 @@ -// Copyright 2017 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 !go1.8 - -package promhttp - -import ( - "io" - "net/http" -) - -func newDelegator(w http.ResponseWriter, observeWriteHeaderFunc func(int)) delegator { - d := &responseWriterDelegator{ - ResponseWriter: w, - observeWriteHeader: observeWriteHeaderFunc, - } - - id := 0 - if _, ok := w.(http.CloseNotifier); ok { - id += closeNotifier - } - if _, ok := w.(http.Flusher); ok { - id += flusher - } - if _, ok := w.(http.Hijacker); ok { - id += hijacker - } - if _, ok := w.(io.ReaderFrom); ok { - id += readerFrom - } - - return pickDelegator[id](d) -} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go index 668eb6b3..cea5a90f 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go @@ -47,7 +47,6 @@ import ( const ( contentTypeHeader = "Content-Type" - contentLengthHeader = "Content-Length" contentEncodingHeader = "Content-Encoding" acceptEncodingHeader = "Accept-Encoding" ) @@ -85,10 +84,32 @@ func Handler() http.Handler { // instrumentation. Use the InstrumentMetricHandler function to apply the same // kind of instrumentation as it is used by the Handler function. func HandlerFor(reg prometheus.Gatherer, opts HandlerOpts) http.Handler { - var inFlightSem chan struct{} + var ( + inFlightSem chan struct{} + errCnt = prometheus.NewCounterVec( + prometheus.CounterOpts{ + Name: "promhttp_metric_handler_errors_total", + Help: "Total number of internal errors encountered by the promhttp metric handler.", + }, + []string{"cause"}, + ) + ) + if opts.MaxRequestsInFlight > 0 { inFlightSem = make(chan struct{}, opts.MaxRequestsInFlight) } + if opts.Registry != nil { + // Initialize all possibilites that can occur below. + errCnt.WithLabelValues("gathering") + errCnt.WithLabelValues("encoding") + if err := opts.Registry.Register(errCnt); err != nil { + if are, ok := err.(prometheus.AlreadyRegisteredError); ok { + errCnt = are.ExistingCollector.(*prometheus.CounterVec) + } else { + panic(err) + } + } + } h := http.HandlerFunc(func(rsp http.ResponseWriter, req *http.Request) { if inFlightSem != nil { @@ -107,6 +128,7 @@ func HandlerFor(reg prometheus.Gatherer, opts HandlerOpts) http.Handler { if opts.ErrorLog != nil { opts.ErrorLog.Println("error gathering metrics:", err) } + errCnt.WithLabelValues("gathering").Inc() switch opts.ErrorHandling { case PanicOnError: panic(err) @@ -147,6 +169,7 @@ func HandlerFor(reg prometheus.Gatherer, opts HandlerOpts) http.Handler { if opts.ErrorLog != nil { opts.ErrorLog.Println("error encoding and sending metric family:", err) } + errCnt.WithLabelValues("encoding").Inc() switch opts.ErrorHandling { case PanicOnError: panic(err) @@ -237,9 +260,12 @@ const ( // Ignore errors and try to serve as many metrics as possible. However, // if no metrics can be served, serve an HTTP status code 500 and the // last error message in the body. Only use this in deliberate "best - // effort" metrics collection scenarios. It is recommended to at least - // log errors (by providing an ErrorLog in HandlerOpts) to not mask - // errors completely. + // effort" metrics collection scenarios. In this case, it is highly + // recommended to provide other means of detecting errors: By setting an + // ErrorLog in HandlerOpts, the errors are logged. By providing a + // Registry in HandlerOpts, the exposed metrics include an error counter + // "promhttp_metric_handler_errors_total", which can be used for + // alerts. ContinueOnError // Panic upon the first error encountered (useful for "crash only" apps). PanicOnError @@ -262,6 +288,18 @@ type HandlerOpts struct { // logged regardless of the configured ErrorHandling provided ErrorLog // is not nil. ErrorHandling HandlerErrorHandling + // If Registry is not nil, it is used to register a metric + // "promhttp_metric_handler_errors_total", partitioned by "cause". A + // failed registration causes a panic. Note that this error counter is + // different from the instrumentation you get from the various + // InstrumentHandler... helpers. It counts errors that don't necessarily + // result in a non-2xx HTTP status code. There are two typical cases: + // (1) Encoding errors that only happen after streaming of the HTTP body + // has already started (and the status code 200 has been sent). This + // should only happen with custom collectors. (2) Collection errors with + // no effect on the HTTP status code because ErrorHandling is set to + // ContinueOnError. + Registry prometheus.Registerer // If DisableCompression is true, the handler will never compress the // response, even if requested by the client. DisableCompression bool diff --git a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_client.go b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_client.go index 86fd5644..83c49b66 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_client.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_client.go @@ -14,7 +14,9 @@ package promhttp import ( + "crypto/tls" "net/http" + "net/http/httptrace" "time" "github.com/prometheus/client_golang/prometheus" @@ -95,3 +97,123 @@ func InstrumentRoundTripperDuration(obs prometheus.ObserverVec, next http.RoundT return resp, err }) } + +// InstrumentTrace is used to offer flexibility in instrumenting the available +// httptrace.ClientTrace hook functions. Each function is passed a float64 +// representing the time in seconds since the start of the http request. A user +// may choose to use separately buckets Histograms, or implement custom +// instance labels on a per function basis. +type InstrumentTrace struct { + GotConn func(float64) + PutIdleConn func(float64) + GotFirstResponseByte func(float64) + Got100Continue func(float64) + DNSStart func(float64) + DNSDone func(float64) + ConnectStart func(float64) + ConnectDone func(float64) + TLSHandshakeStart func(float64) + TLSHandshakeDone func(float64) + WroteHeaders func(float64) + Wait100Continue func(float64) + WroteRequest func(float64) +} + +// InstrumentRoundTripperTrace is a middleware that wraps the provided +// RoundTripper and reports times to hook functions provided in the +// InstrumentTrace struct. Hook functions that are not present in the provided +// InstrumentTrace struct are ignored. Times reported to the hook functions are +// time since the start of the request. Only with Go1.9+, those times are +// guaranteed to never be negative. (Earlier Go versions are not using a +// monotonic clock.) Note that partitioning of Histograms is expensive and +// should be used judiciously. +// +// For hook functions that receive an error as an argument, no observations are +// made in the event of a non-nil error value. +// +// See the example for ExampleInstrumentRoundTripperDuration for example usage. +func InstrumentRoundTripperTrace(it *InstrumentTrace, next http.RoundTripper) RoundTripperFunc { + return RoundTripperFunc(func(r *http.Request) (*http.Response, error) { + start := time.Now() + + trace := &httptrace.ClientTrace{ + GotConn: func(_ httptrace.GotConnInfo) { + if it.GotConn != nil { + it.GotConn(time.Since(start).Seconds()) + } + }, + PutIdleConn: func(err error) { + if err != nil { + return + } + if it.PutIdleConn != nil { + it.PutIdleConn(time.Since(start).Seconds()) + } + }, + DNSStart: func(_ httptrace.DNSStartInfo) { + if it.DNSStart != nil { + it.DNSStart(time.Since(start).Seconds()) + } + }, + DNSDone: func(_ httptrace.DNSDoneInfo) { + if it.DNSDone != nil { + it.DNSDone(time.Since(start).Seconds()) + } + }, + ConnectStart: func(_, _ string) { + if it.ConnectStart != nil { + it.ConnectStart(time.Since(start).Seconds()) + } + }, + ConnectDone: func(_, _ string, err error) { + if err != nil { + return + } + if it.ConnectDone != nil { + it.ConnectDone(time.Since(start).Seconds()) + } + }, + GotFirstResponseByte: func() { + if it.GotFirstResponseByte != nil { + it.GotFirstResponseByte(time.Since(start).Seconds()) + } + }, + Got100Continue: func() { + if it.Got100Continue != nil { + it.Got100Continue(time.Since(start).Seconds()) + } + }, + TLSHandshakeStart: func() { + if it.TLSHandshakeStart != nil { + it.TLSHandshakeStart(time.Since(start).Seconds()) + } + }, + TLSHandshakeDone: func(_ tls.ConnectionState, err error) { + if err != nil { + return + } + if it.TLSHandshakeDone != nil { + it.TLSHandshakeDone(time.Since(start).Seconds()) + } + }, + WroteHeaders: func() { + if it.WroteHeaders != nil { + it.WroteHeaders(time.Since(start).Seconds()) + } + }, + Wait100Continue: func() { + if it.Wait100Continue != nil { + it.Wait100Continue(time.Since(start).Seconds()) + } + }, + WroteRequest: func(_ httptrace.WroteRequestInfo) { + if it.WroteRequest != nil { + it.WroteRequest(time.Since(start).Seconds()) + } + }, + } + r = r.WithContext(httptrace.WithClientTrace(r.Context(), trace)) + + return next.RoundTrip(r) + }) +} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_client_1_8.go b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_client_1_8.go deleted file mode 100644 index a034d1ec..00000000 --- a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_client_1_8.go +++ /dev/null @@ -1,144 +0,0 @@ -// Copyright 2017 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 go1.8 - -package promhttp - -import ( - "context" - "crypto/tls" - "net/http" - "net/http/httptrace" - "time" -) - -// InstrumentTrace is used to offer flexibility in instrumenting the available -// httptrace.ClientTrace hook functions. Each function is passed a float64 -// representing the time in seconds since the start of the http request. A user -// may choose to use separately buckets Histograms, or implement custom -// instance labels on a per function basis. -type InstrumentTrace struct { - GotConn func(float64) - PutIdleConn func(float64) - GotFirstResponseByte func(float64) - Got100Continue func(float64) - DNSStart func(float64) - DNSDone func(float64) - ConnectStart func(float64) - ConnectDone func(float64) - TLSHandshakeStart func(float64) - TLSHandshakeDone func(float64) - WroteHeaders func(float64) - Wait100Continue func(float64) - WroteRequest func(float64) -} - -// InstrumentRoundTripperTrace is a middleware that wraps the provided -// RoundTripper and reports times to hook functions provided in the -// InstrumentTrace struct. Hook functions that are not present in the provided -// InstrumentTrace struct are ignored. Times reported to the hook functions are -// time since the start of the request. Only with Go1.9+, those times are -// guaranteed to never be negative. (Earlier Go versions are not using a -// monotonic clock.) Note that partitioning of Histograms is expensive and -// should be used judiciously. -// -// For hook functions that receive an error as an argument, no observations are -// made in the event of a non-nil error value. -// -// See the example for ExampleInstrumentRoundTripperDuration for example usage. -func InstrumentRoundTripperTrace(it *InstrumentTrace, next http.RoundTripper) RoundTripperFunc { - return RoundTripperFunc(func(r *http.Request) (*http.Response, error) { - start := time.Now() - - trace := &httptrace.ClientTrace{ - GotConn: func(_ httptrace.GotConnInfo) { - if it.GotConn != nil { - it.GotConn(time.Since(start).Seconds()) - } - }, - PutIdleConn: func(err error) { - if err != nil { - return - } - if it.PutIdleConn != nil { - it.PutIdleConn(time.Since(start).Seconds()) - } - }, - DNSStart: func(_ httptrace.DNSStartInfo) { - if it.DNSStart != nil { - it.DNSStart(time.Since(start).Seconds()) - } - }, - DNSDone: func(_ httptrace.DNSDoneInfo) { - if it.DNSDone != nil { - it.DNSDone(time.Since(start).Seconds()) - } - }, - ConnectStart: func(_, _ string) { - if it.ConnectStart != nil { - it.ConnectStart(time.Since(start).Seconds()) - } - }, - ConnectDone: func(_, _ string, err error) { - if err != nil { - return - } - if it.ConnectDone != nil { - it.ConnectDone(time.Since(start).Seconds()) - } - }, - GotFirstResponseByte: func() { - if it.GotFirstResponseByte != nil { - it.GotFirstResponseByte(time.Since(start).Seconds()) - } - }, - Got100Continue: func() { - if it.Got100Continue != nil { - it.Got100Continue(time.Since(start).Seconds()) - } - }, - TLSHandshakeStart: func() { - if it.TLSHandshakeStart != nil { - it.TLSHandshakeStart(time.Since(start).Seconds()) - } - }, - TLSHandshakeDone: func(_ tls.ConnectionState, err error) { - if err != nil { - return - } - if it.TLSHandshakeDone != nil { - it.TLSHandshakeDone(time.Since(start).Seconds()) - } - }, - WroteHeaders: func() { - if it.WroteHeaders != nil { - it.WroteHeaders(time.Since(start).Seconds()) - } - }, - Wait100Continue: func() { - if it.Wait100Continue != nil { - it.Wait100Continue(time.Since(start).Seconds()) - } - }, - WroteRequest: func(_ httptrace.WroteRequestInfo) { - if it.WroteRequest != nil { - it.WroteRequest(time.Since(start).Seconds()) - } - }, - } - r = r.WithContext(httptrace.WithClientTrace(context.Background(), trace)) - - return next.RoundTrip(r) - }) -} diff --git a/vendor/github.com/prometheus/client_golang/prometheus/registry.go b/vendor/github.com/prometheus/client_golang/prometheus/registry.go index b5e70b93..6c32516a 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/registry.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/registry.go @@ -325,9 +325,17 @@ func (r *Registry) Register(c Collector) error { return nil } if existing, exists := r.collectorsByID[collectorID]; exists { - return AlreadyRegisteredError{ - ExistingCollector: existing, - NewCollector: c, + switch e := existing.(type) { + case *wrappingCollector: + return AlreadyRegisteredError{ + ExistingCollector: e.unwrapRecursively(), + NewCollector: c, + } + default: + return AlreadyRegisteredError{ + ExistingCollector: e, + NewCollector: c, + } } } // If the collectorID is new, but at least one of the descs existed @@ -680,7 +688,7 @@ func processMetric( // Gatherers is a slice of Gatherer instances that implements the Gatherer // interface itself. Its Gather method calls Gather on all Gatherers in the // slice in order and returns the merged results. Errors returned from the -// Gather calles are all returned in a flattened MultiError. Duplicate and +// Gather calls are all returned in a flattened MultiError. Duplicate and // inconsistent Metrics are skipped (first occurrence in slice order wins) and // reported in the returned error. // diff --git a/vendor/github.com/prometheus/client_golang/prometheus/summary.go b/vendor/github.com/prometheus/client_golang/prometheus/summary.go index 2980614d..c970fdee 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/summary.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/summary.go @@ -16,8 +16,10 @@ package prometheus import ( "fmt" "math" + "runtime" "sort" "sync" + "sync/atomic" "time" "github.com/beorn7/perks/quantile" @@ -37,7 +39,7 @@ const quantileLabel = "quantile" // A typical use-case is the observation of request latencies. By default, a // Summary provides the median, the 90th and the 99th percentile of the latency // as rank estimations. However, the default behavior will change in the -// upcoming v0.10 of the library. There will be no rank estimations at all by +// upcoming v1.0.0 of the library. There will be no rank estimations at all by // default. For a sane transition, it is recommended to set the desired rank // estimations explicitly. // @@ -56,16 +58,8 @@ type Summary interface { Observe(float64) } -// DefObjectives are the default Summary quantile values. -// -// Deprecated: DefObjectives will not be used as the default objectives in -// v0.10 of the library. The default Summary will have no quantiles then. -var ( - DefObjectives = map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001} - - errQuantileLabelNotAllowed = fmt.Errorf( - "%q is not allowed as label name in summaries", quantileLabel, - ) +var errQuantileLabelNotAllowed = fmt.Errorf( + "%q is not allowed as label name in summaries", quantileLabel, ) // Default values for SummaryOpts. @@ -84,7 +78,7 @@ const ( // mandatory to set Name to a non-empty string. While all other fields are // optional and can safely be left at their zero value, it is recommended to set // a help string and to explicitly set the Objectives field to the desired value -// as the default value will change in the upcoming v0.10 of the library. +// as the default value will change in the upcoming v1.0.0 of the library. type SummaryOpts struct { // Namespace, Subsystem, and Name are components of the fully-qualified // name of the Summary (created by joining these components with @@ -121,13 +115,8 @@ type SummaryOpts struct { // Objectives defines the quantile rank estimates with their respective // absolute error. If Objectives[q] = e, then the value reported for q // will be the φ-quantile value for some φ between q-e and q+e. The - // default value is DefObjectives. It is used if Objectives is left at - // its zero value (i.e. nil). To create a Summary without Objectives, - // set it to an empty map (i.e. map[float64]float64{}). - // - // Deprecated: Note that the current value of DefObjectives is - // deprecated. It will be replaced by an empty map in v0.10 of the - // library. Please explicitly set Objectives to the desired value. + // default value is an empty map, resulting in a summary without + // quantiles. Objectives map[float64]float64 // MaxAge defines the duration for which an observation stays relevant @@ -151,7 +140,7 @@ type SummaryOpts struct { BufCap uint32 } -// Great fuck-up with the sliding-window decay algorithm... The Merge method of +// Problem with the sliding-window decay algorithm... The Merge method of // perk/quantile is actually not working as advertised - and it might be // unfixable, as the underlying algorithm is apparently not capable of merging // summaries in the first place. To avoid using Merge, we are currently adding @@ -196,7 +185,7 @@ func newSummary(desc *Desc, opts SummaryOpts, labelValues ...string) Summary { } if opts.Objectives == nil { - opts.Objectives = DefObjectives + opts.Objectives = map[float64]float64{} } if opts.MaxAge < 0 { @@ -214,6 +203,17 @@ func newSummary(desc *Desc, opts SummaryOpts, labelValues ...string) Summary { opts.BufCap = DefBufCap } + if len(opts.Objectives) == 0 { + // Use the lock-free implementation of a Summary without objectives. + s := &noObjectivesSummary{ + desc: desc, + labelPairs: makeLabelPairs(desc, labelValues), + counts: [2]*summaryCounts{&summaryCounts{}, &summaryCounts{}}, + } + s.init(s) // Init self-collection. + return s + } + s := &summary{ desc: desc, @@ -382,6 +382,116 @@ func (s *summary) swapBufs(now time.Time) { } } +type summaryCounts struct { + // sumBits contains the bits of the float64 representing the sum of all + // observations. sumBits and count have to go first in the struct to + // guarantee alignment for atomic operations. + // http://golang.org/pkg/sync/atomic/#pkg-note-BUG + sumBits uint64 + count uint64 +} + +type noObjectivesSummary struct { + // countAndHotIdx enables lock-free writes with use of atomic updates. + // The most significant bit is the hot index [0 or 1] of the count field + // below. Observe calls update the hot one. All remaining bits count the + // number of Observe calls. Observe starts by incrementing this counter, + // and finish by incrementing the count field in the respective + // summaryCounts, as a marker for completion. + // + // Calls of the Write method (which are non-mutating reads from the + // perspective of the summary) swap the hot–cold under the writeMtx + // lock. A cooldown is awaited (while locked) by comparing the number of + // observations with the initiation count. Once they match, then the + // last observation on the now cool one has completed. All cool fields must + // be merged into the new hot before releasing writeMtx. + + // Fields with atomic access first! See alignment constraint: + // http://golang.org/pkg/sync/atomic/#pkg-note-BUG + countAndHotIdx uint64 + + selfCollector + desc *Desc + writeMtx sync.Mutex // Only used in the Write method. + + // Two counts, one is "hot" for lock-free observations, the other is + // "cold" for writing out a dto.Metric. It has to be an array of + // pointers to guarantee 64bit alignment of the histogramCounts, see + // http://golang.org/pkg/sync/atomic/#pkg-note-BUG. + counts [2]*summaryCounts + + labelPairs []*dto.LabelPair +} + +func (s *noObjectivesSummary) Desc() *Desc { + return s.desc +} + +func (s *noObjectivesSummary) Observe(v float64) { + // We increment h.countAndHotIdx so that the counter in the lower + // 63 bits gets incremented. At the same time, we get the new value + // back, which we can use to find the currently-hot counts. + n := atomic.AddUint64(&s.countAndHotIdx, 1) + hotCounts := s.counts[n>>63] + + for { + oldBits := atomic.LoadUint64(&hotCounts.sumBits) + newBits := math.Float64bits(math.Float64frombits(oldBits) + v) + if atomic.CompareAndSwapUint64(&hotCounts.sumBits, oldBits, newBits) { + break + } + } + // Increment count last as we take it as a signal that the observation + // is complete. + atomic.AddUint64(&hotCounts.count, 1) +} + +func (s *noObjectivesSummary) Write(out *dto.Metric) error { + // For simplicity, we protect this whole method by a mutex. It is not in + // the hot path, i.e. Observe is called much more often than Write. The + // complication of making Write lock-free isn't worth it, if possible at + // all. + s.writeMtx.Lock() + defer s.writeMtx.Unlock() + + // Adding 1<<63 switches the hot index (from 0 to 1 or from 1 to 0) + // without touching the count bits. See the struct comments for a full + // description of the algorithm. + n := atomic.AddUint64(&s.countAndHotIdx, 1<<63) + // count is contained unchanged in the lower 63 bits. + count := n & ((1 << 63) - 1) + // The most significant bit tells us which counts is hot. The complement + // is thus the cold one. + hotCounts := s.counts[n>>63] + coldCounts := s.counts[(^n)>>63] + + // Await cooldown. + for count != atomic.LoadUint64(&coldCounts.count) { + runtime.Gosched() // Let observations get work done. + } + + sum := &dto.Summary{ + SampleCount: proto.Uint64(count), + SampleSum: proto.Float64(math.Float64frombits(atomic.LoadUint64(&coldCounts.sumBits))), + } + + out.Summary = sum + out.Label = s.labelPairs + + // Finally add all the cold counts to the new hot counts and reset the cold counts. + atomic.AddUint64(&hotCounts.count, count) + atomic.StoreUint64(&coldCounts.count, 0) + for { + oldBits := atomic.LoadUint64(&hotCounts.sumBits) + newBits := math.Float64bits(math.Float64frombits(oldBits) + sum.GetSampleSum()) + if atomic.CompareAndSwapUint64(&hotCounts.sumBits, oldBits, newBits) { + atomic.StoreUint64(&coldCounts.sumBits, 0) + break + } + } + return nil +} + type quantSort []*dto.Quantile func (s quantSort) Len() int { diff --git a/vendor/github.com/prometheus/client_golang/prometheus/wrap.go b/vendor/github.com/prometheus/client_golang/prometheus/wrap.go index 49159bf3..e303eef6 100644 --- a/vendor/github.com/prometheus/client_golang/prometheus/wrap.go +++ b/vendor/github.com/prometheus/client_golang/prometheus/wrap.go @@ -32,6 +32,12 @@ import ( // WrapRegistererWith provides a way to add fixed labels to a subset of // Collectors. It should not be used to add fixed labels to all metrics exposed. // +// Conflicts between Collectors registered through the original Registerer with +// Collectors registered through the wrapping Registerer will still be +// detected. Any AlreadyRegisteredError returned by the Register method of +// either Registerer will contain the ExistingCollector in the form it was +// provided to the respective registry. +// // The Collector example demonstrates a use of WrapRegistererWith. func WrapRegistererWith(labels Labels, reg Registerer) Registerer { return &wrappingRegisterer{ @@ -54,6 +60,12 @@ func WrapRegistererWith(labels Labels, reg Registerer) Registerer { // (see NewGoCollector) and the process collector (see NewProcessCollector). (In // fact, those metrics are already prefixed with “go_” or “process_”, // respectively.) +// +// Conflicts between Collectors registered through the original Registerer with +// Collectors registered through the wrapping Registerer will still be +// detected. Any AlreadyRegisteredError returned by the Register method of +// either Registerer will contain the ExistingCollector in the form it was +// provided to the respective registry. func WrapRegistererWithPrefix(prefix string, reg Registerer) Registerer { return &wrappingRegisterer{ wrappedRegisterer: reg, @@ -123,6 +135,15 @@ func (c *wrappingCollector) Describe(ch chan<- *Desc) { } } +func (c *wrappingCollector) unwrapRecursively() Collector { + switch wc := c.wrappedCollector.(type) { + case *wrappingCollector: + return wc.unwrapRecursively() + default: + return wc + } +} + type wrappingMetric struct { wrappedMetric Metric prefix string diff --git a/vendor/github.com/prometheus/common/model/time.go b/vendor/github.com/prometheus/common/model/time.go index 46259b1f..7b0064fd 100644 --- a/vendor/github.com/prometheus/common/model/time.go +++ b/vendor/github.com/prometheus/common/model/time.go @@ -150,7 +150,13 @@ func (t *Time) UnmarshalJSON(b []byte) error { return err } - *t = Time(v + va) + // If the value was something like -0.1 the negative is lost in the + // parsing because of the leading zero, this ensures that we capture it. + if len(p[0]) > 0 && p[0][0] == '-' && v+va > 0 { + *t = Time(v+va) * -1 + } else { + *t = Time(v + va) + } default: return fmt.Errorf("invalid time %q", string(b)) diff --git a/vendor/modules.txt b/vendor/modules.txt index 0227700a..4204734c 100644 --- a/vendor/modules.txt +++ b/vendor/modules.txt @@ -33,13 +33,13 @@ github.com/mdlayher/netlink/nlenc # github.com/mdlayher/wifi v0.0.0-20180727163819-efdf3f4195d9 github.com/mdlayher/wifi github.com/mdlayher/wifi/internal/nl80211 -# github.com/prometheus/client_golang v0.9.2 +# github.com/prometheus/client_golang v1.0.0 github.com/prometheus/client_golang/prometheus github.com/prometheus/client_golang/prometheus/promhttp github.com/prometheus/client_golang/prometheus/internal # github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90 github.com/prometheus/client_model/go -# github.com/prometheus/common v0.3.0 +# github.com/prometheus/common v0.4.1 github.com/prometheus/common/log github.com/prometheus/common/version github.com/prometheus/common/expfmt @@ -72,8 +72,8 @@ golang.org/x/net/internal/socket golang.org/x/sync/errgroup # golang.org/x/sys v0.0.0-20190610081024-1e42afee0f76 golang.org/x/sys/unix -golang.org/x/sys/windows/svc/eventlog golang.org/x/sys/windows +golang.org/x/sys/windows/svc/eventlog golang.org/x/sys/windows/registry # gopkg.in/alecthomas/kingpin.v2 v2.2.6 gopkg.in/alecthomas/kingpin.v2