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span_handler.go
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/
span_handler.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 app
import (
"github.com/uber/tchannel-go/thrift"
"go.uber.org/zap"
zipkinS "github.com/jaegertracing/jaeger/cmd/collector/app/sanitizer/zipkin"
"github.com/jaegertracing/jaeger/model"
jConv "github.com/jaegertracing/jaeger/model/converter/thrift/jaeger"
"github.com/jaegertracing/jaeger/model/converter/thrift/zipkin"
"github.com/jaegertracing/jaeger/thrift-gen/jaeger"
"github.com/jaegertracing/jaeger/thrift-gen/zipkincore"
)
const (
// JaegerFormatType is for Jaeger Spans
JaegerFormatType = "jaeger"
// ZipkinFormatType is for zipkin Spans
ZipkinFormatType = "zipkin"
// UnknownFormatType is for spans that do not have a widely defined/well-known format type
UnknownFormatType = "unknown"
)
// ZipkinSpansHandler consumes and handles zipkin spans
type ZipkinSpansHandler interface {
// SubmitZipkinBatch records a batch of spans in Zipkin Thrift format
SubmitZipkinBatch(ctx thrift.Context, spans []*zipkincore.Span) ([]*zipkincore.Response, error)
}
// JaegerBatchesHandler consumes and handles Jaeger batches
type JaegerBatchesHandler interface {
// SubmitBatches records a batch of spans in Jaeger Thrift format
SubmitBatches(ctx thrift.Context, batches []*jaeger.Batch) ([]*jaeger.BatchSubmitResponse, error)
}
// SpanProcessor handles model spans
type SpanProcessor interface {
// ProcessSpans processes model spans and return with either a list of true/false success or an error
ProcessSpans(mSpans []*model.Span, spanFormat string) ([]bool, error)
}
type jaegerBatchesHandler struct {
logger *zap.Logger
modelProcessor SpanProcessor
}
// NewJaegerSpanHandler returns a JaegerBatchesHandler
func NewJaegerSpanHandler(logger *zap.Logger, modelProcessor SpanProcessor) JaegerBatchesHandler {
return &jaegerBatchesHandler{
logger: logger,
modelProcessor: modelProcessor,
}
}
func (jbh *jaegerBatchesHandler) SubmitBatches(ctx thrift.Context, batches []*jaeger.Batch) ([]*jaeger.BatchSubmitResponse, error) {
responses := make([]*jaeger.BatchSubmitResponse, 0, len(batches))
for _, batch := range batches {
mSpans := make([]*model.Span, 0, len(batch.Spans))
for _, span := range batch.Spans {
mSpan := jConv.ToDomainSpan(span, batch.Process)
mSpans = append(mSpans, mSpan)
}
oks, err := jbh.modelProcessor.ProcessSpans(mSpans, JaegerFormatType)
if err != nil {
jbh.logger.Error("Collector failed to process span batch", zap.Error(err))
return nil, err
}
batchOk := true
for _, ok := range oks {
if !ok {
batchOk = false
break
}
}
jbh.logger.Debug("Span batch processed by the collector.", zap.Bool("ok", batchOk))
res := &jaeger.BatchSubmitResponse{
Ok: batchOk,
}
responses = append(responses, res)
}
return responses, nil
}
type zipkinSpanHandler struct {
logger *zap.Logger
sanitizer zipkinS.Sanitizer
modelProcessor SpanProcessor
}
// NewZipkinSpanHandler returns a ZipkinSpansHandler
func NewZipkinSpanHandler(logger *zap.Logger, modelHandler SpanProcessor, sanitizer zipkinS.Sanitizer) ZipkinSpansHandler {
return &zipkinSpanHandler{
logger: logger,
modelProcessor: modelHandler,
sanitizer: sanitizer,
}
}
// SubmitZipkinBatch records a batch of spans already in Zipkin Thrift format.
func (h *zipkinSpanHandler) SubmitZipkinBatch(ctx thrift.Context, spans []*zipkincore.Span) ([]*zipkincore.Response, error) {
mSpans := make([]*model.Span, 0, len(spans))
for _, span := range spans {
sanitized := h.sanitizer.Sanitize(span)
mSpans = append(mSpans, convertZipkinToModel(sanitized, h.logger)...)
}
bools, err := h.modelProcessor.ProcessSpans(mSpans, ZipkinFormatType)
if err != nil {
h.logger.Error("Collector failed to process Zipkin span batch", zap.Error(err))
return nil, err
}
responses := make([]*zipkincore.Response, len(spans))
for i, ok := range bools {
res := zipkincore.NewResponse()
res.Ok = ok
responses[i] = res
}
h.logger.Debug("Zipkin span batch processed by the collector.", zap.Int("span-count", len(spans)))
return responses, nil
}
// ConvertZipkinToModel is a helper function that logs warnings during conversion
func convertZipkinToModel(zSpan *zipkincore.Span, logger *zap.Logger) []*model.Span {
mSpans, err := zipkin.ToDomainSpan(zSpan)
if err != nil {
logger.Warn("Warning while converting zipkin to domain span", zap.Error(err))
}
return mSpans
}