diff options
Diffstat (limited to 'vendor/github.com/uber/jaeger-lib/metrics')
| -rw-r--r-- | vendor/github.com/uber/jaeger-lib/metrics/counter.go | 28 | ||||
| -rw-r--r-- | vendor/github.com/uber/jaeger-lib/metrics/factory.go | 78 | ||||
| -rw-r--r-- | vendor/github.com/uber/jaeger-lib/metrics/gauge.go | 28 | ||||
| -rw-r--r-- | vendor/github.com/uber/jaeger-lib/metrics/histogram.go | 28 | ||||
| -rw-r--r-- | vendor/github.com/uber/jaeger-lib/metrics/keys.go | 35 | ||||
| -rw-r--r-- | vendor/github.com/uber/jaeger-lib/metrics/metrics.go | 137 | ||||
| -rw-r--r-- | vendor/github.com/uber/jaeger-lib/metrics/stopwatch.go | 43 | ||||
| -rw-r--r-- | vendor/github.com/uber/jaeger-lib/metrics/timer.go | 33 |
8 files changed, 410 insertions, 0 deletions
diff --git a/vendor/github.com/uber/jaeger-lib/metrics/counter.go b/vendor/github.com/uber/jaeger-lib/metrics/counter.go new file mode 100644 index 000000000..2a6a43efd --- /dev/null +++ b/vendor/github.com/uber/jaeger-lib/metrics/counter.go @@ -0,0 +1,28 @@ +// Copyright (c) 2017 Uber Technologies, Inc. +// +// 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 metrics + +// Counter tracks the number of times an event has occurred +type Counter interface { + // Inc adds the given value to the counter. + Inc(int64) +} + +// NullCounter counter that does nothing +var NullCounter Counter = nullCounter{} + +type nullCounter struct{} + +func (nullCounter) Inc(int64) {} diff --git a/vendor/github.com/uber/jaeger-lib/metrics/factory.go b/vendor/github.com/uber/jaeger-lib/metrics/factory.go new file mode 100644 index 000000000..0ead061eb --- /dev/null +++ b/vendor/github.com/uber/jaeger-lib/metrics/factory.go @@ -0,0 +1,78 @@ +// Copyright (c) 2017 Uber Technologies, Inc. +// +// 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 metrics + +import ( + "time" +) + +// NSOptions defines the name and tags map associated with a factory namespace +type NSOptions struct { + Name string + Tags map[string]string +} + +// Options defines the information associated with a metric +type Options struct { + Name string + Tags map[string]string + Help string +} + +// TimerOptions defines the information associated with a metric +type TimerOptions struct { + Name string + Tags map[string]string + Help string + Buckets []time.Duration +} + +// HistogramOptions defines the information associated with a metric +type HistogramOptions struct { + Name string + Tags map[string]string + Help string + Buckets []float64 +} + +// Factory creates new metrics +type Factory interface { + Counter(metric Options) Counter + Timer(metric TimerOptions) Timer + Gauge(metric Options) Gauge + Histogram(metric HistogramOptions) Histogram + + // Namespace returns a nested metrics factory. + Namespace(scope NSOptions) Factory +} + +// NullFactory is a metrics factory that returns NullCounter, NullTimer, and NullGauge. +var NullFactory Factory = nullFactory{} + +type nullFactory struct{} + +func (nullFactory) Counter(options Options) Counter { + return NullCounter +} +func (nullFactory) Timer(options TimerOptions) Timer { + return NullTimer +} +func (nullFactory) Gauge(options Options) Gauge { + return NullGauge +} +func (nullFactory) Histogram(options HistogramOptions) Histogram { + return NullHistogram +} +func (nullFactory) Namespace(scope NSOptions) Factory { return NullFactory } diff --git a/vendor/github.com/uber/jaeger-lib/metrics/gauge.go b/vendor/github.com/uber/jaeger-lib/metrics/gauge.go new file mode 100644 index 000000000..3c606391a --- /dev/null +++ b/vendor/github.com/uber/jaeger-lib/metrics/gauge.go @@ -0,0 +1,28 @@ +// Copyright (c) 2017 Uber Technologies, Inc. +// +// 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 metrics + +// Gauge returns instantaneous measurements of something as an int64 value +type Gauge interface { + // Update the gauge to the value passed in. + Update(int64) +} + +// NullGauge gauge that does nothing +var NullGauge Gauge = nullGauge{} + +type nullGauge struct{} + +func (nullGauge) Update(int64) {} diff --git a/vendor/github.com/uber/jaeger-lib/metrics/histogram.go b/vendor/github.com/uber/jaeger-lib/metrics/histogram.go new file mode 100644 index 000000000..d3bd6174f --- /dev/null +++ b/vendor/github.com/uber/jaeger-lib/metrics/histogram.go @@ -0,0 +1,28 @@ +// Copyright (c) 2018 The Jaeger 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 metrics + +// Histogram that keeps track of a distribution of values. +type Histogram interface { + // Records the value passed in. + Record(float64) +} + +// NullHistogram that does nothing +var NullHistogram Histogram = nullHistogram{} + +type nullHistogram struct{} + +func (nullHistogram) Record(float64) {} diff --git a/vendor/github.com/uber/jaeger-lib/metrics/keys.go b/vendor/github.com/uber/jaeger-lib/metrics/keys.go new file mode 100644 index 000000000..c24445a10 --- /dev/null +++ b/vendor/github.com/uber/jaeger-lib/metrics/keys.go @@ -0,0 +1,35 @@ +// Copyright (c) 2017 Uber Technologies, Inc. +// +// 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 metrics + +import ( + "sort" +) + +// GetKey converts name+tags into a single string of the form +// "name|tag1=value1|...|tagN=valueN", where tag names are +// sorted alphabetically. +func GetKey(name string, tags map[string]string, tagsSep string, tagKVSep string) string { + keys := make([]string, 0, len(tags)) + for k := range tags { + keys = append(keys, k) + } + sort.Strings(keys) + key := name + for _, k := range keys { + key = key + tagsSep + k + tagKVSep + tags[k] + } + return key +} diff --git a/vendor/github.com/uber/jaeger-lib/metrics/metrics.go b/vendor/github.com/uber/jaeger-lib/metrics/metrics.go new file mode 100644 index 000000000..0c6396888 --- /dev/null +++ b/vendor/github.com/uber/jaeger-lib/metrics/metrics.go @@ -0,0 +1,137 @@ +// Copyright (c) 2017 Uber Technologies, Inc. +// +// 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 metrics + +import ( + "fmt" + "reflect" + "strconv" + "strings" +) + +// MustInit initializes the passed in metrics and initializes its fields using the passed in factory. +// +// It uses reflection to initialize a struct containing metrics fields +// by assigning new Counter/Gauge/Timer values with the metric name retrieved +// from the `metric` tag and stats tags retrieved from the `tags` tag. +// +// Note: all fields of the struct must be exported, have a `metric` tag, and be +// of type Counter or Gauge or Timer. +// +// Errors during Init lead to a panic. +func MustInit(metrics interface{}, factory Factory, globalTags map[string]string) { + if err := Init(metrics, factory, globalTags); err != nil { + panic(err.Error()) + } +} + +// Init does the same as Init, but returns an error instead of +// panicking. +func Init(m interface{}, factory Factory, globalTags map[string]string) error { + // Allow user to opt out of reporting metrics by passing in nil. + if factory == nil { + factory = NullFactory + } + + counterPtrType := reflect.TypeOf((*Counter)(nil)).Elem() + gaugePtrType := reflect.TypeOf((*Gauge)(nil)).Elem() + timerPtrType := reflect.TypeOf((*Timer)(nil)).Elem() + histogramPtrType := reflect.TypeOf((*Histogram)(nil)).Elem() + + v := reflect.ValueOf(m).Elem() + t := v.Type() + for i := 0; i < t.NumField(); i++ { + tags := make(map[string]string) + for k, v := range globalTags { + tags[k] = v + } + var buckets []float64 + field := t.Field(i) + metric := field.Tag.Get("metric") + if metric == "" { + return fmt.Errorf("Field %s is missing a tag 'metric'", field.Name) + } + if tagString := field.Tag.Get("tags"); tagString != "" { + tagPairs := strings.Split(tagString, ",") + for _, tagPair := range tagPairs { + tag := strings.Split(tagPair, "=") + if len(tag) != 2 { + return fmt.Errorf( + "Field [%s]: Tag [%s] is not of the form key=value in 'tags' string [%s]", + field.Name, tagPair, tagString) + } + tags[tag[0]] = tag[1] + } + } + if bucketString := field.Tag.Get("buckets"); bucketString != "" { + if field.Type.AssignableTo(timerPtrType) { + // TODO: Parse timer duration buckets + return fmt.Errorf( + "Field [%s]: Buckets are not currently initialized for timer metrics", + field.Name) + } else if field.Type.AssignableTo(histogramPtrType) { + bucketValues := strings.Split(bucketString, ",") + for _, bucket := range bucketValues { + b, err := strconv.ParseFloat(bucket, 64) + if err != nil { + return fmt.Errorf( + "Field [%s]: Bucket [%s] could not be converted to float64 in 'buckets' string [%s]", + field.Name, bucket, bucketString) + } + buckets = append(buckets, b) + } + } else { + return fmt.Errorf( + "Field [%s]: Buckets should only be defined for Timer and Histogram metric types", + field.Name) + } + } + help := field.Tag.Get("help") + var obj interface{} + if field.Type.AssignableTo(counterPtrType) { + obj = factory.Counter(Options{ + Name: metric, + Tags: tags, + Help: help, + }) + } else if field.Type.AssignableTo(gaugePtrType) { + obj = factory.Gauge(Options{ + Name: metric, + Tags: tags, + Help: help, + }) + } else if field.Type.AssignableTo(timerPtrType) { + // TODO: Add buckets once parsed (see TODO above) + obj = factory.Timer(TimerOptions{ + Name: metric, + Tags: tags, + Help: help, + }) + } else if field.Type.AssignableTo(histogramPtrType) { + obj = factory.Histogram(HistogramOptions{ + Name: metric, + Tags: tags, + Help: help, + Buckets: buckets, + }) + } else { + return fmt.Errorf( + "Field %s is not a pointer to timer, gauge, or counter", + field.Name) + } + v.Field(i).Set(reflect.ValueOf(obj)) + } + return nil +} diff --git a/vendor/github.com/uber/jaeger-lib/metrics/stopwatch.go b/vendor/github.com/uber/jaeger-lib/metrics/stopwatch.go new file mode 100644 index 000000000..4a8abdb53 --- /dev/null +++ b/vendor/github.com/uber/jaeger-lib/metrics/stopwatch.go @@ -0,0 +1,43 @@ +// Copyright (c) 2017 Uber Technologies, Inc. +// +// 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 metrics + +import ( + "time" +) + +// StartStopwatch begins recording the executing time of an event, returning +// a Stopwatch that should be used to stop the recording the time for +// that event. Multiple events can be occurring simultaneously each +// represented by different active Stopwatches +func StartStopwatch(timer Timer) Stopwatch { + return Stopwatch{t: timer, start: time.Now()} +} + +// A Stopwatch tracks the execution time of a specific event +type Stopwatch struct { + t Timer + start time.Time +} + +// Stop stops executing of the stopwatch and records the amount of elapsed time +func (s Stopwatch) Stop() { + s.t.Record(s.ElapsedTime()) +} + +// ElapsedTime returns the amount of elapsed time (in time.Duration) +func (s Stopwatch) ElapsedTime() time.Duration { + return time.Since(s.start) +} diff --git a/vendor/github.com/uber/jaeger-lib/metrics/timer.go b/vendor/github.com/uber/jaeger-lib/metrics/timer.go new file mode 100644 index 000000000..e18d222ab --- /dev/null +++ b/vendor/github.com/uber/jaeger-lib/metrics/timer.go @@ -0,0 +1,33 @@ +// Copyright (c) 2017 Uber Technologies, Inc. +// +// 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 metrics + +import ( + "time" +) + +// Timer accumulates observations about how long some operation took, +// and also maintains a historgam of percentiles. +type Timer interface { + // Records the time passed in. + Record(time.Duration) +} + +// NullTimer timer that does nothing +var NullTimer Timer = nullTimer{} + +type nullTimer struct{} + +func (nullTimer) Record(time.Duration) {} |