mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-11-21 14:44:00 +00:00
56 lines
2 KiB
Go
56 lines
2 KiB
Go
/*
|
|
*
|
|
* Copyright 2016 gRPC 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 tap defines the function handles which are executed on the transport
|
|
// layer of gRPC-Go and related information.
|
|
//
|
|
// Experimental
|
|
//
|
|
// Notice: This API is EXPERIMENTAL and may be changed or removed in a
|
|
// later release.
|
|
package tap
|
|
|
|
import (
|
|
"context"
|
|
)
|
|
|
|
// Info defines the relevant information needed by the handles.
|
|
type Info struct {
|
|
// FullMethodName is the string of grpc method (in the format of
|
|
// /package.service/method).
|
|
FullMethodName string
|
|
// TODO: More to be added.
|
|
}
|
|
|
|
// ServerInHandle defines the function which runs before a new stream is
|
|
// created on the server side. If it returns a non-nil error, the stream will
|
|
// not be created and an error will be returned to the client. If the error
|
|
// returned is a status error, that status code and message will be used,
|
|
// otherwise PermissionDenied will be the code and err.Error() will be the
|
|
// message.
|
|
//
|
|
// It's intended to be used in situations where you don't want to waste the
|
|
// resources to accept the new stream (e.g. rate-limiting). For other general
|
|
// usages, please use interceptors.
|
|
//
|
|
// Note that it is executed in the per-connection I/O goroutine(s) instead of
|
|
// per-RPC goroutine. Therefore, users should NOT have any
|
|
// blocking/time-consuming work in this handle. Otherwise all the RPCs would
|
|
// slow down. Also, for the same reason, this handle won't be called
|
|
// concurrently by gRPC.
|
|
type ServerInHandle func(ctx context.Context, info *Info) (context.Context, error)
|