117 lines
4 KiB
Go
117 lines
4 KiB
Go
// Copyright (c) 2016 Uber Technologies, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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package jaeger
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import (
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"time"
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)
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// TracerOption is a function that sets some option on the tracer
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type TracerOption func(tracer *Tracer)
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// TracerOptions is a factory for all available TracerOption's
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var TracerOptions tracerOptions
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type tracerOptions struct{}
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// Metrics creates a TracerOption that initializes Metrics on the tracer,
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// which is used to emit statistics.
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func (tracerOptions) Metrics(m *Metrics) TracerOption {
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return func(tracer *Tracer) {
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tracer.metrics = *m
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}
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}
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// Logger creates a TracerOption that gives the tracer a Logger.
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func (tracerOptions) Logger(logger Logger) TracerOption {
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return func(tracer *Tracer) {
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tracer.logger = logger
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}
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}
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// TimeNow creates a TracerOption that gives the tracer a function
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// used to generate timestamps for spans.
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func (tracerOptions) TimeNow(timeNow func() time.Time) TracerOption {
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return func(tracer *Tracer) {
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tracer.timeNow = timeNow
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}
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}
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// RandomNumber creates a TracerOption that gives the tracer
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// a thread-safe random number generator function for generating trace IDs.
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func (tracerOptions) RandomNumber(randomNumber func() uint64) TracerOption {
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return func(tracer *Tracer) {
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tracer.randomNumber = randomNumber
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}
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}
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// PoolSpans creates a TracerOption that tells the tracer whether it should use
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// an object pool to minimize span allocations.
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// This should be used with care, only if the service is not running any async tasks
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// that can access parent spans after those spans have been finished.
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func (tracerOptions) PoolSpans(poolSpans bool) TracerOption {
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return func(tracer *Tracer) {
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tracer.options.poolSpans = poolSpans
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}
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}
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// Deprecated: HostIPv4 creates a TracerOption that identifies the current service/process.
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// If not set, the factory method will obtain the current IP address.
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// The TracerOption is deprecated; the tracer will attempt to automatically detect the IP.
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func (tracerOptions) HostIPv4(hostIPv4 uint32) TracerOption {
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return func(tracer *Tracer) {
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tracer.hostIPv4 = hostIPv4
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}
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}
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func (tracerOptions) Injector(format interface{}, injector Injector) TracerOption {
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return func(tracer *Tracer) {
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tracer.injectors[format] = injector
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}
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}
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func (tracerOptions) Extractor(format interface{}, extractor Extractor) TracerOption {
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return func(tracer *Tracer) {
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tracer.extractors[format] = extractor
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}
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}
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func (t tracerOptions) Observer(observer Observer) TracerOption {
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return t.ContribObserver(&oldObserver{obs: observer})
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}
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func (tracerOptions) ContribObserver(observer ContribObserver) TracerOption {
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return func(tracer *Tracer) {
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tracer.observer.append(observer)
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}
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}
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func (tracerOptions) ZipkinSharedRPCSpan(zipkinSharedRPCSpan bool) TracerOption {
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return func(tracer *Tracer) {
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tracer.options.zipkinSharedRPCSpan = zipkinSharedRPCSpan
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}
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}
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func (tracerOptions) Tag(key string, value interface{}) TracerOption {
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return func(tracer *Tracer) {
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tracer.tags = append(tracer.tags, Tag{key: key, value: value})
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}
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}
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