DockerCLI/vendor/google.golang.org/grpc/tap/tap.go

/*
 *
 * Copyright 2016, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// Package tap defines the function handles which are executed on the transport
// layer of gRPC-Go and related information. Everything here is EXPERIMENTAL.
package tap

import (
	"golang.org/x/net/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 when a new stream is created
// on the server side. 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.
type ServerInHandle func(ctx context.Context, info *Info) (context.Context, error)