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span_handler_builder.go
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/
span_handler_builder.go
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// Copyright (c) 2019 The Jaeger Authors.
// 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 app
import (
"os"
"github.com/uber/jaeger-lib/metrics"
"go.uber.org/zap"
"github.com/jaegertracing/jaeger/cmd/collector/app/handler"
zs "github.com/jaegertracing/jaeger/cmd/collector/app/sanitizer/zipkin"
"github.com/jaegertracing/jaeger/model"
"github.com/jaegertracing/jaeger/storage/spanstore"
)
// SpanHandlerBuilder holds configuration required for handlers
type SpanHandlerBuilder struct {
SpanWriter spanstore.Writer
CollectorOpts CollectorOptions
Logger *zap.Logger
MetricsFactory metrics.Factory
}
// BuildHandlers builds span handlers (Zipkin, Jaeger)
func (b *SpanHandlerBuilder) BuildHandlers() (
handler.ZipkinSpansHandler,
handler.JaegerBatchesHandler,
*handler.GRPCHandler,
) {
hostname, _ := os.Hostname()
svcMetrics := b.metricsFactory()
hostMetrics := svcMetrics.Namespace(metrics.NSOptions{Tags: map[string]string{"host": hostname}})
spanProcessor := NewSpanProcessor(
b.SpanWriter,
Options.ServiceMetrics(svcMetrics),
Options.HostMetrics(hostMetrics),
Options.Logger(b.logger()),
Options.SpanFilter(defaultSpanFilter),
Options.NumWorkers(b.CollectorOpts.NumWorkers),
Options.QueueSize(b.CollectorOpts.QueueSize),
Options.CollectorTags(b.CollectorOpts.CollectorTags),
Options.DynQueueSizeWarmup(uint(b.CollectorOpts.QueueSize)), // same as queue size for now
Options.DynQueueSizeMemory(b.CollectorOpts.DynQueueSizeMemory),
)
return handler.NewZipkinSpanHandler(b.Logger, spanProcessor, zs.NewChainedSanitizer(zs.StandardSanitizers...)),
handler.NewJaegerSpanHandler(b.Logger, spanProcessor),
handler.NewGRPCHandler(b.Logger, spanProcessor)
}
func defaultSpanFilter(*model.Span) bool {
return true
}
func (b *SpanHandlerBuilder) logger() *zap.Logger {
if b.Logger == nil {
return zap.NewNop()
}
return b.Logger
}
func (b *SpanHandlerBuilder) metricsFactory() metrics.Factory {
if b.MetricsFactory == nil {
return metrics.NullFactory
}
return b.MetricsFactory
}