mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-23 08:56:31 +01:00
249 lines
7.3 KiB
Go
249 lines
7.3 KiB
Go
// 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 ocgrpc
|
|
|
|
import (
|
|
"context"
|
|
"strconv"
|
|
"strings"
|
|
"sync/atomic"
|
|
"time"
|
|
|
|
"go.opencensus.io/metric/metricdata"
|
|
ocstats "go.opencensus.io/stats"
|
|
"go.opencensus.io/stats/view"
|
|
"go.opencensus.io/tag"
|
|
"go.opencensus.io/trace"
|
|
"google.golang.org/grpc/codes"
|
|
"google.golang.org/grpc/grpclog"
|
|
"google.golang.org/grpc/stats"
|
|
"google.golang.org/grpc/status"
|
|
)
|
|
|
|
type grpcInstrumentationKey string
|
|
|
|
// rpcData holds the instrumentation RPC data that is needed between the start
|
|
// and end of an call. It holds the info that this package needs to keep track
|
|
// of between the various GRPC events.
|
|
type rpcData struct {
|
|
// reqCount and respCount has to be the first words
|
|
// in order to be 64-aligned on 32-bit architectures.
|
|
sentCount, sentBytes, recvCount, recvBytes int64 // access atomically
|
|
|
|
// startTime represents the time at which TagRPC was invoked at the
|
|
// beginning of an RPC. It is an appoximation of the time when the
|
|
// application code invoked GRPC code.
|
|
startTime time.Time
|
|
method string
|
|
}
|
|
|
|
// The following variables define the default hard-coded auxiliary data used by
|
|
// both the default GRPC client and GRPC server metrics.
|
|
var (
|
|
DefaultBytesDistribution = view.Distribution(1024, 2048, 4096, 16384, 65536, 262144, 1048576, 4194304, 16777216, 67108864, 268435456, 1073741824, 4294967296)
|
|
DefaultMillisecondsDistribution = view.Distribution(0.01, 0.05, 0.1, 0.3, 0.6, 0.8, 1, 2, 3, 4, 5, 6, 8, 10, 13, 16, 20, 25, 30, 40, 50, 65, 80, 100, 130, 160, 200, 250, 300, 400, 500, 650, 800, 1000, 2000, 5000, 10000, 20000, 50000, 100000)
|
|
DefaultMessageCountDistribution = view.Distribution(1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536)
|
|
)
|
|
|
|
// Server tags are applied to the context used to process each RPC, as well as
|
|
// the measures at the end of each RPC.
|
|
var (
|
|
KeyServerMethod = tag.MustNewKey("grpc_server_method")
|
|
KeyServerStatus = tag.MustNewKey("grpc_server_status")
|
|
)
|
|
|
|
// Client tags are applied to measures at the end of each RPC.
|
|
var (
|
|
KeyClientMethod = tag.MustNewKey("grpc_client_method")
|
|
KeyClientStatus = tag.MustNewKey("grpc_client_status")
|
|
)
|
|
|
|
var (
|
|
rpcDataKey = grpcInstrumentationKey("opencensus-rpcData")
|
|
)
|
|
|
|
func methodName(fullname string) string {
|
|
return strings.TrimLeft(fullname, "/")
|
|
}
|
|
|
|
// statsHandleRPC processes the RPC events.
|
|
func statsHandleRPC(ctx context.Context, s stats.RPCStats) {
|
|
switch st := s.(type) {
|
|
case *stats.OutHeader, *stats.InHeader, *stats.InTrailer, *stats.OutTrailer:
|
|
// do nothing for client
|
|
case *stats.Begin:
|
|
handleRPCBegin(ctx, st)
|
|
case *stats.OutPayload:
|
|
handleRPCOutPayload(ctx, st)
|
|
case *stats.InPayload:
|
|
handleRPCInPayload(ctx, st)
|
|
case *stats.End:
|
|
handleRPCEnd(ctx, st)
|
|
default:
|
|
grpclog.Infof("unexpected stats: %T", st)
|
|
}
|
|
}
|
|
|
|
func handleRPCBegin(ctx context.Context, s *stats.Begin) {
|
|
d, ok := ctx.Value(rpcDataKey).(*rpcData)
|
|
if !ok {
|
|
if grpclog.V(2) {
|
|
grpclog.Infoln("Failed to retrieve *rpcData from context.")
|
|
}
|
|
}
|
|
|
|
if s.IsClient() {
|
|
ocstats.RecordWithOptions(ctx,
|
|
ocstats.WithTags(tag.Upsert(KeyClientMethod, methodName(d.method))),
|
|
ocstats.WithMeasurements(ClientStartedRPCs.M(1)))
|
|
} else {
|
|
ocstats.RecordWithOptions(ctx,
|
|
ocstats.WithTags(tag.Upsert(KeyClientMethod, methodName(d.method))),
|
|
ocstats.WithMeasurements(ServerStartedRPCs.M(1)))
|
|
}
|
|
}
|
|
|
|
func handleRPCOutPayload(ctx context.Context, s *stats.OutPayload) {
|
|
d, ok := ctx.Value(rpcDataKey).(*rpcData)
|
|
if !ok {
|
|
if grpclog.V(2) {
|
|
grpclog.Infoln("Failed to retrieve *rpcData from context.")
|
|
}
|
|
return
|
|
}
|
|
|
|
atomic.AddInt64(&d.sentBytes, int64(s.Length))
|
|
atomic.AddInt64(&d.sentCount, 1)
|
|
}
|
|
|
|
func handleRPCInPayload(ctx context.Context, s *stats.InPayload) {
|
|
d, ok := ctx.Value(rpcDataKey).(*rpcData)
|
|
if !ok {
|
|
if grpclog.V(2) {
|
|
grpclog.Infoln("Failed to retrieve *rpcData from context.")
|
|
}
|
|
return
|
|
}
|
|
|
|
atomic.AddInt64(&d.recvBytes, int64(s.Length))
|
|
atomic.AddInt64(&d.recvCount, 1)
|
|
}
|
|
|
|
func handleRPCEnd(ctx context.Context, s *stats.End) {
|
|
d, ok := ctx.Value(rpcDataKey).(*rpcData)
|
|
if !ok {
|
|
if grpclog.V(2) {
|
|
grpclog.Infoln("Failed to retrieve *rpcData from context.")
|
|
}
|
|
return
|
|
}
|
|
|
|
elapsedTime := time.Since(d.startTime)
|
|
|
|
var st string
|
|
if s.Error != nil {
|
|
s, ok := status.FromError(s.Error)
|
|
if ok {
|
|
st = statusCodeToString(s)
|
|
}
|
|
} else {
|
|
st = "OK"
|
|
}
|
|
|
|
latencyMillis := float64(elapsedTime) / float64(time.Millisecond)
|
|
attachments := getSpanCtxAttachment(ctx)
|
|
if s.Client {
|
|
ocstats.RecordWithOptions(ctx,
|
|
ocstats.WithTags(
|
|
tag.Upsert(KeyClientMethod, methodName(d.method)),
|
|
tag.Upsert(KeyClientStatus, st)),
|
|
ocstats.WithAttachments(attachments),
|
|
ocstats.WithMeasurements(
|
|
ClientSentBytesPerRPC.M(atomic.LoadInt64(&d.sentBytes)),
|
|
ClientSentMessagesPerRPC.M(atomic.LoadInt64(&d.sentCount)),
|
|
ClientReceivedMessagesPerRPC.M(atomic.LoadInt64(&d.recvCount)),
|
|
ClientReceivedBytesPerRPC.M(atomic.LoadInt64(&d.recvBytes)),
|
|
ClientRoundtripLatency.M(latencyMillis)))
|
|
} else {
|
|
ocstats.RecordWithOptions(ctx,
|
|
ocstats.WithTags(
|
|
tag.Upsert(KeyServerStatus, st),
|
|
),
|
|
ocstats.WithAttachments(attachments),
|
|
ocstats.WithMeasurements(
|
|
ServerSentBytesPerRPC.M(atomic.LoadInt64(&d.sentBytes)),
|
|
ServerSentMessagesPerRPC.M(atomic.LoadInt64(&d.sentCount)),
|
|
ServerReceivedMessagesPerRPC.M(atomic.LoadInt64(&d.recvCount)),
|
|
ServerReceivedBytesPerRPC.M(atomic.LoadInt64(&d.recvBytes)),
|
|
ServerLatency.M(latencyMillis)))
|
|
}
|
|
}
|
|
|
|
func statusCodeToString(s *status.Status) string {
|
|
// see https://github.com/grpc/grpc/blob/master/doc/statuscodes.md
|
|
switch c := s.Code(); c {
|
|
case codes.OK:
|
|
return "OK"
|
|
case codes.Canceled:
|
|
return "CANCELLED"
|
|
case codes.Unknown:
|
|
return "UNKNOWN"
|
|
case codes.InvalidArgument:
|
|
return "INVALID_ARGUMENT"
|
|
case codes.DeadlineExceeded:
|
|
return "DEADLINE_EXCEEDED"
|
|
case codes.NotFound:
|
|
return "NOT_FOUND"
|
|
case codes.AlreadyExists:
|
|
return "ALREADY_EXISTS"
|
|
case codes.PermissionDenied:
|
|
return "PERMISSION_DENIED"
|
|
case codes.ResourceExhausted:
|
|
return "RESOURCE_EXHAUSTED"
|
|
case codes.FailedPrecondition:
|
|
return "FAILED_PRECONDITION"
|
|
case codes.Aborted:
|
|
return "ABORTED"
|
|
case codes.OutOfRange:
|
|
return "OUT_OF_RANGE"
|
|
case codes.Unimplemented:
|
|
return "UNIMPLEMENTED"
|
|
case codes.Internal:
|
|
return "INTERNAL"
|
|
case codes.Unavailable:
|
|
return "UNAVAILABLE"
|
|
case codes.DataLoss:
|
|
return "DATA_LOSS"
|
|
case codes.Unauthenticated:
|
|
return "UNAUTHENTICATED"
|
|
default:
|
|
return "CODE_" + strconv.FormatInt(int64(c), 10)
|
|
}
|
|
}
|
|
|
|
func getSpanCtxAttachment(ctx context.Context) metricdata.Attachments {
|
|
attachments := map[string]interface{}{}
|
|
span := trace.FromContext(ctx)
|
|
if span == nil {
|
|
return attachments
|
|
}
|
|
spanCtx := span.SpanContext()
|
|
if spanCtx.IsSampled() {
|
|
attachments[metricdata.AttachmentKeySpanContext] = spanCtx
|
|
}
|
|
return attachments
|
|
}
|