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grpc.go
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grpc.go
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// Copyright 2017, OpenCensus Authors
//
// 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 grpc contains OpenCensus stats and trace
// integrations with gRPC.
package grpc
import (
"golang.org/x/net/context"
"go.opencensus.io/plugin/grpc/grpcstats"
"go.opencensus.io/plugin/grpc/grpctrace"
"google.golang.org/grpc/stats"
)
// NewClientStatsHandler enables OpenCensus stats and trace
// for gRPC clients. If these features need to be indiviually turned
// on, see grpcstats and grpctrace packages.
func NewClientStatsHandler() stats.Handler {
return handler{
grpcstats.NewClientStatsHandler(),
grpctrace.NewClientStatsHandler(),
}
}
// NewServerStatsHandler enables OpenCensus stats and trace
// for gRPC servers. If these features need to be indiviually turned
// on, see grpcstats and grpctrace packages.
func NewServerStatsHandler() stats.Handler {
return handler{
grpcstats.NewServerStatsHandler(),
grpctrace.NewServerStatsHandler(),
}
}
type handler []stats.Handler
func (h handler) HandleConn(ctx context.Context, cs stats.ConnStats) {
for _, hh := range h {
hh.HandleConn(ctx, cs)
}
}
func (h handler) HandleRPC(ctx context.Context, rs stats.RPCStats) {
for _, hh := range h {
hh.HandleRPC(ctx, rs)
}
}
func (h handler) TagConn(ctx context.Context, cti *stats.ConnTagInfo) context.Context {
for _, hh := range h {
ctx = hh.TagConn(ctx, cti)
}
return ctx
}
func (h handler) TagRPC(ctx context.Context, rti *stats.RPCTagInfo) context.Context {
for _, hh := range h {
ctx = hh.TagRPC(ctx, rti)
}
return ctx
}