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annotation.go
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annotation.go
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// Copyright (c) 2017 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package zipkin
import (
"strings"
"github.com/uber/jaeger/thrift-gen/zipkincore"
)
// IsServerCore checks to see if an annotation is a core server annotation
func IsServerCore(anno string) bool {
return anno == zipkincore.SERVER_SEND || anno == zipkincore.SERVER_RECV
}
// IsClientCore checks to see if an annotation is a core client annotation
func IsClientCore(anno string) bool {
return anno == zipkincore.CLIENT_SEND || anno == zipkincore.CLIENT_RECV
}
// IsCore checks to see if an annotation is a core annotation
func IsCore(anno string) bool {
return IsServerCore(anno) || IsClientCore(anno)
}
// FindServiceName finds annotation in Zipkin span that represents emitting service name.
func FindServiceName(span *zipkincore.Span) string {
for _, anno := range span.Annotations {
endpoint := anno.GetHost()
if endpoint == nil {
continue
}
if IsCore(anno.Value) || strings.Index(anno.Value, "haproxy.") == 0 {
if endpoint.GetServiceName() != "" {
return endpoint.GetServiceName()
}
}
}
return ""
}