diff options
Diffstat (limited to 'vendor/github.com/uber/jaeger-lib/metrics/factory.go')
-rw-r--r-- | vendor/github.com/uber/jaeger-lib/metrics/factory.go | 78 |
1 files changed, 78 insertions, 0 deletions
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 } |