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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 mock
import (
"reflect"
"github.com/gogo/protobuf/proto"
"github.com/mesos/mesos-go/api/v0/messenger"
"github.com/mesos/mesos-go/api/v0/upid"
"github.com/stretchr/testify/mock"
"golang.org/x/net/context"
)
type message struct {
from *upid.UPID
msg proto.Message
}
// Messenger is a messenger that returns error on every operation.
type Messenger struct {
mock.Mock
messageQueue chan *message
handlers map[string]messenger.MessageHandler
stop chan struct{}
}
// NewMessenger returns a mocked messenger used for testing.
func NewMessenger() *Messenger {
return &Messenger{
messageQueue: make(chan *message, 1),
handlers: make(map[string]messenger.MessageHandler),
stop: make(chan struct{}),
}
}
// Install is a mocked implementation.
func (m *Messenger) Install(handler messenger.MessageHandler, msg proto.Message) error {
m.handlers[reflect.TypeOf(msg).Elem().Name()] = handler
return m.Called().Error(0)
}
// Send is a mocked implementation.
func (m *Messenger) Send(ctx context.Context, upid *upid.UPID, msg proto.Message) error {
return m.Called().Error(0)
}
func (m *Messenger) Route(ctx context.Context, upid *upid.UPID, msg proto.Message) error {
return m.Called().Error(0)
}
// Start is a mocked implementation.
func (m *Messenger) Start() error {
go m.recvLoop()
return m.Called().Error(0)
}
// Stop is a mocked implementation.
func (m *Messenger) Stop() error {
// don't close an already-closed channel
select {
case <-m.stop:
// noop
default:
close(m.stop)
}
return m.Called().Error(0)
}
// UPID is a mocked implementation.
func (m *Messenger) UPID() upid.UPID {
return m.Called().Get(0).(upid.UPID)
}
func (m *Messenger) recvLoop() {
for {
select {
case <-m.stop:
return
case msg := <-m.messageQueue:
name := reflect.TypeOf(msg.msg).Elem().Name()
m.handlers[name](msg.from, msg.msg)
}
}
}
// Recv receives a upid and a message, it will dispatch the message to its handler
// with the upid. This is for testing.
func (m *Messenger) Recv(from *upid.UPID, msg proto.Message) {
m.messageQueue <- &message{from, msg}
}
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