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stats.go
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/
stats.go
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// Copyright © 2019 The Things Network Foundation, The Things Industries B.V.
//
// 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 rpcmiddleware
import (
"context"
"google.golang.org/grpc/stats"
)
// StatsHandlers is a slice of stats.Handler that implements stats.Handler.
// Calls are delegated to all handlers in order.
type StatsHandlers []stats.Handler
// TagRPC implements stats.Handler.
func (s StatsHandlers) TagRPC(ctx context.Context, info *stats.RPCTagInfo) context.Context {
for _, hdl := range s {
ctx = hdl.TagRPC(ctx, info)
}
return ctx
}
// HandleRPC implements stats.Handler.
func (s StatsHandlers) HandleRPC(ctx context.Context, stats stats.RPCStats) {
for _, hdl := range s {
hdl.HandleRPC(ctx, stats)
}
}
// TagConn implements stats.Handler.
func (s StatsHandlers) TagConn(ctx context.Context, info *stats.ConnTagInfo) context.Context {
for _, hdl := range s {
ctx = hdl.TagConn(ctx, info)
}
return ctx
}
// HandleConn implements stats.Handler.
func (s StatsHandlers) HandleConn(ctx context.Context, stats stats.ConnStats) {
for _, hdl := range s {
hdl.HandleConn(ctx, stats)
}
}