mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
78 lines
2.6 KiB
Go
78 lines
2.6 KiB
Go
// Copyright 2016 CoreOS, Inc.
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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 v3rpc
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import (
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"strings"
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"time"
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"github.com/coreos/etcd/etcdserver"
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"github.com/coreos/etcd/etcdserver/api/v3rpc/rpctypes"
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"github.com/coreos/etcd/pkg/types"
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"github.com/coreos/etcd/raft"
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"golang.org/x/net/context"
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"google.golang.org/grpc"
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"google.golang.org/grpc/metadata"
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)
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func newUnaryInterceptor(s *etcdserver.EtcdServer) grpc.UnaryServerInterceptor {
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return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (resp interface{}, err error) {
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md, ok := metadata.FromContext(ctx)
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if ok {
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if ks := md[rpctypes.MetadataRequireLeaderKey]; len(ks) > 0 && ks[0] == rpctypes.MetadataHasLeader {
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if s.Leader() == types.ID(raft.None) {
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return nil, rpctypes.ErrGRPCNoLeader
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}
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}
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}
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return metricsUnaryInterceptor(ctx, req, info, handler)
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}
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}
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func metricsUnaryInterceptor(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (resp interface{}, err error) {
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service, method := splitMethodName(info.FullMethod)
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receivedCounter.WithLabelValues(service, method).Inc()
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start := time.Now()
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resp, err = handler(ctx, req)
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if err != nil {
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failedCounter.WithLabelValues(service, method, grpc.Code(err).String()).Inc()
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}
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handlingDuration.WithLabelValues(service, method).Observe(time.Since(start).Seconds())
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return resp, err
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}
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func metricsStreamInterceptor(srv interface{}, ss grpc.ServerStream, info *grpc.StreamServerInfo, handler grpc.StreamHandler) error {
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service, method := splitMethodName(info.FullMethod)
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receivedCounter.WithLabelValues(service, method).Inc()
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err := handler(srv, ss)
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if err != nil {
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failedCounter.WithLabelValues(service, method, grpc.Code(err).String()).Inc()
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}
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return err
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}
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func splitMethodName(fullMethodName string) (string, string) {
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fullMethodName = strings.TrimPrefix(fullMethodName, "/") // remove leading slash
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if i := strings.Index(fullMethodName, "/"); i >= 0 {
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return fullMethodName[:i], fullMethodName[i+1:]
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}
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return "unknown", "unknown"
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}
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