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span_handler_builder.go
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/
span_handler_builder.go
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// 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 builder
import (
"os"
"github.com/uber/jaeger-lib/metrics"
"go.uber.org/zap"
basicB "github.com/jaegertracing/jaeger/cmd/builder"
"github.com/jaegertracing/jaeger/cmd/collector/app"
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 {
logger *zap.Logger
metricsFactory metrics.Factory
collectorOpts *CollectorOptions
spanWriter spanstore.Writer
}
// NewSpanHandlerBuilder returns new SpanHandlerBuilder with configured span storage.
func NewSpanHandlerBuilder(cOpts *CollectorOptions, spanWriter spanstore.Writer, opts ...basicB.Option) (*SpanHandlerBuilder, error) {
options := basicB.ApplyOptions(opts...)
spanHb := &SpanHandlerBuilder{
collectorOpts: cOpts,
logger: options.Logger,
metricsFactory: options.MetricsFactory,
spanWriter: spanWriter,
}
return spanHb, nil
}
// BuildHandlers builds span handlers (Zipkin, Jaeger)
func (spanHb *SpanHandlerBuilder) BuildHandlers() (
app.ZipkinSpansHandler,
app.JaegerBatchesHandler,
*app.GRPCHandler,
) {
hostname, _ := os.Hostname()
hostMetrics := spanHb.metricsFactory.Namespace(metrics.NSOptions{Name: "", Tags: map[string]string{"host": hostname}})
spanProcessor := app.NewSpanProcessor(
spanHb.spanWriter,
app.Options.ServiceMetrics(spanHb.metricsFactory),
app.Options.HostMetrics(hostMetrics),
app.Options.Logger(spanHb.logger),
app.Options.SpanFilter(defaultSpanFilter),
app.Options.NumWorkers(spanHb.collectorOpts.NumWorkers),
app.Options.QueueSize(spanHb.collectorOpts.QueueSize),
)
return app.NewZipkinSpanHandler(spanHb.logger, spanProcessor, zs.NewChainedSanitizer(zs.StandardSanitizers...)),
app.NewJaegerSpanHandler(spanHb.logger, spanProcessor),
app.NewGRPCHandler(spanHb.logger, spanProcessor)
}
func defaultSpanFilter(*model.Span) bool {
return true
}