diff options
Diffstat (limited to 'vendor/go.opencensus.io/plugin/ocgrpc/client.go')
-rw-r--r-- | vendor/go.opencensus.io/plugin/ocgrpc/client.go | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/vendor/go.opencensus.io/plugin/ocgrpc/client.go b/vendor/go.opencensus.io/plugin/ocgrpc/client.go new file mode 100644 index 0000000..a6c466a --- /dev/null +++ b/vendor/go.opencensus.io/plugin/ocgrpc/client.go @@ -0,0 +1,56 @@ +// Copyright 2018, 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 ocgrpc + +import ( + "go.opencensus.io/trace" + "golang.org/x/net/context" + + "google.golang.org/grpc/stats" +) + +// ClientHandler implements a gRPC stats.Handler for recording OpenCensus stats and +// traces. Use with gRPC clients only. +type ClientHandler struct { + // StartOptions allows configuring the StartOptions used to create new spans. + // + // StartOptions.SpanKind will always be set to trace.SpanKindClient + // for spans started by this handler. + StartOptions trace.StartOptions +} + +// HandleConn exists to satisfy gRPC stats.Handler. +func (c *ClientHandler) HandleConn(ctx context.Context, cs stats.ConnStats) { + // no-op +} + +// TagConn exists to satisfy gRPC stats.Handler. +func (c *ClientHandler) TagConn(ctx context.Context, cti *stats.ConnTagInfo) context.Context { + // no-op + return ctx +} + +// HandleRPC implements per-RPC tracing and stats instrumentation. +func (c *ClientHandler) HandleRPC(ctx context.Context, rs stats.RPCStats) { + traceHandleRPC(ctx, rs) + statsHandleRPC(ctx, rs) +} + +// TagRPC implements per-RPC context management. +func (c *ClientHandler) TagRPC(ctx context.Context, rti *stats.RPCTagInfo) context.Context { + ctx = c.traceTagRPC(ctx, rti) + ctx = c.statsTagRPC(ctx, rti) + return ctx +} |