mirror of
https://github.com/rocky-linux/peridot.git
synced 2024-12-22 10:48:30 +00:00
102 lines
3.1 KiB
Go
102 lines
3.1 KiB
Go
// The MIT License
|
|
//
|
|
// Copyright (c) 2021 Temporal Technologies Inc. All rights reserved.
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to deal
|
|
// in the Software without restriction, including without limitation the rights
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
// copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in
|
|
// all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
// THE SOFTWARE.
|
|
|
|
package metrics
|
|
|
|
import (
|
|
"context"
|
|
"strings"
|
|
"time"
|
|
|
|
"google.golang.org/grpc"
|
|
)
|
|
|
|
// HandlerContextKey is the context key for a MetricHandler value.
|
|
type HandlerContextKey struct{}
|
|
|
|
// LongPollContextKey is the context key for a boolean stating whether the gRPC
|
|
// call is a long poll.
|
|
type LongPollContextKey struct{}
|
|
|
|
// NewGRPCInterceptor creates a new gRPC unary interceptor to record metrics.
|
|
func NewGRPCInterceptor(defaultHandler Handler, suffix string) grpc.UnaryClientInterceptor {
|
|
return func(
|
|
ctx context.Context,
|
|
method string,
|
|
req interface{},
|
|
reply interface{},
|
|
cc *grpc.ClientConn,
|
|
invoker grpc.UnaryInvoker,
|
|
opts ...grpc.CallOption,
|
|
) error {
|
|
handler, _ := ctx.Value(HandlerContextKey{}).(Handler)
|
|
if handler == nil {
|
|
handler = defaultHandler
|
|
}
|
|
longPoll, ok := ctx.Value(LongPollContextKey{}).(bool)
|
|
if !ok {
|
|
longPoll = false
|
|
}
|
|
|
|
// Only take method name after the last slash
|
|
operation := method[strings.LastIndex(method, "/")+1:]
|
|
handler = handler.WithTags(map[string]string{OperationTagName: operation})
|
|
|
|
// Capture time, record start, run, and record end
|
|
start := time.Now()
|
|
recordRequestStart(handler, longPoll, suffix)
|
|
err := invoker(ctx, method, req, reply, cc, opts...)
|
|
recordRequestEnd(handler, longPoll, suffix, start, err)
|
|
return err
|
|
}
|
|
}
|
|
|
|
func recordRequestStart(handler Handler, longPoll bool, suffix string) {
|
|
// Count request
|
|
metric := TemporalRequest
|
|
if longPoll {
|
|
metric = TemporalLongRequest
|
|
}
|
|
metric += suffix
|
|
handler.Counter(metric).Inc(1)
|
|
}
|
|
|
|
func recordRequestEnd(handler Handler, longPoll bool, suffix string, start time.Time, err error) {
|
|
// Record latency
|
|
timerMetric := TemporalRequestLatency
|
|
if longPoll {
|
|
timerMetric = TemporalLongRequestLatency
|
|
}
|
|
timerMetric += suffix
|
|
handler.Timer(timerMetric).Record(time.Since(start))
|
|
|
|
// Count failure
|
|
if err != nil {
|
|
failureMetric := TemporalRequestFailure
|
|
if longPoll {
|
|
failureMetric = TemporalLongRequestFailure
|
|
}
|
|
failureMetric += suffix
|
|
handler.Counter(failureMetric).Inc(1)
|
|
}
|
|
}
|