mirror of
https://github.com/fnproject/fn.git
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4084b727c0
* move mattes migrations to migratex * changes format of migrations to migratex format * updates test runner to use new interface (double checked this with printlns, the tests go fully down and then up, and work on pg/mysql) * remove mattes/migrate * update tests from deps * update readme * fix other file extensions
100 lines
3.5 KiB
Go
100 lines
3.5 KiB
Go
// Copyright 2017, OpenCensus Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package ocgrpc
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import (
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"strings"
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"google.golang.org/grpc/codes"
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"go.opencensus.io/trace"
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"go.opencensus.io/trace/propagation"
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"golang.org/x/net/context"
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"google.golang.org/grpc/metadata"
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"google.golang.org/grpc/stats"
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"google.golang.org/grpc/status"
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)
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const traceContextKey = "grpc-trace-bin"
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// TagRPC creates a new trace span for the client side of the RPC.
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//
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// It returns ctx with the new trace span added and a serialization of the
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// SpanContext added to the outgoing gRPC metadata.
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func (c *ClientHandler) traceTagRPC(ctx context.Context, rti *stats.RPCTagInfo) context.Context {
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name := "Sent" + strings.Replace(rti.FullMethodName, "/", ".", -1)
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ctx, _ = trace.StartSpan(ctx, name)
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traceContextBinary := propagation.Binary(trace.FromContext(ctx).SpanContext())
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if len(traceContextBinary) == 0 {
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return ctx
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}
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return metadata.AppendToOutgoingContext(ctx, traceContextKey, string(traceContextBinary))
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}
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// TagRPC creates a new trace span for the server side of the RPC.
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//
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// It checks the incoming gRPC metadata in ctx for a SpanContext, and if
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// it finds one, uses that SpanContext as the parent context of the new span.
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//
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// It returns ctx, with the new trace span added.
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func (s *ServerHandler) traceTagRPC(ctx context.Context, rti *stats.RPCTagInfo) context.Context {
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md, _ := metadata.FromIncomingContext(ctx)
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name := "Recv" + strings.Replace(rti.FullMethodName, "/", ".", -1)
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if s := md[traceContextKey]; len(s) > 0 {
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if parent, ok := propagation.FromBinary([]byte(s[0])); ok {
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span := trace.NewSpanWithRemoteParent(name, parent, trace.StartOptions{})
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return trace.WithSpan(ctx, span)
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}
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}
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// TODO(ramonza): should we ignore the in-process parent here?
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ctx, _ = trace.StartSpan(ctx, name)
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return ctx
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}
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// HandleRPC processes the RPC stats, adding information to the current trace span.
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func (c *ClientHandler) traceHandleRPC(ctx context.Context, rs stats.RPCStats) {
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handleRPC(ctx, rs)
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}
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// HandleRPC processes the RPC stats, adding information to the current trace span.
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func (s *ServerHandler) traceHandleRPC(ctx context.Context, rs stats.RPCStats) {
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handleRPC(ctx, rs)
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}
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func handleRPC(ctx context.Context, rs stats.RPCStats) {
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span := trace.FromContext(ctx)
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// TODO: compressed and uncompressed sizes are not populated in every message.
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switch rs := rs.(type) {
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case *stats.Begin:
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span.SetAttributes(
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trace.BoolAttribute("Client", rs.Client),
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trace.BoolAttribute("FailFast", rs.FailFast))
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case *stats.InPayload:
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span.AddMessageReceiveEvent(0 /* TODO: messageID */, int64(rs.Length), int64(rs.WireLength))
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case *stats.OutPayload:
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span.AddMessageSendEvent(0, int64(rs.Length), int64(rs.WireLength))
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case *stats.End:
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if rs.Error != nil {
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s, ok := status.FromError(rs.Error)
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if ok {
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span.SetStatus(trace.Status{Code: int32(s.Code()), Message: s.Message()})
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} else {
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span.SetStatus(trace.Status{Code: int32(codes.Internal), Message: rs.Error.Error()})
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}
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}
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span.End()
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}
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}
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