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// Copyright 2019 Aporeto Inc.
// 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 bahamut
import (
"time"
)
// PubSubOptPublish is the type of option that can use in PubSubClient.Publish.
type PubSubOptPublish func(interface{})
// PubSubOptSubscribe is the type of option that can use in PubSubClient.Subscribe.
type PubSubOptSubscribe func(interface{})
// A PubSubClient is a structure that provides a publish/subscribe mechanism.
type PubSubClient interface {
Publish(publication *Publication, opts ...PubSubOptPublish) error
Subscribe(pubs chan *Publication, errors chan error, topic string, opts ...PubSubOptSubscribe) func()
Connect() Waiter
Disconnect() error
}
// A Waiter is the interface returned by Server.Connect
// that you can use to wait for the connection.
type Waiter interface {
Wait(time.Duration) bool
}
// A connectionWaiter is the Waiter for the PubSub Server connection
type connectionWaiter struct {
ok chan bool
abort chan struct{}
}
// Wait waits at most for the given timeout for the connection.
func (w connectionWaiter) Wait(timeout time.Duration) bool {
select {
case status := <-w.ok:
return status
case <-time.After(timeout):
close(w.abort)
return false
}
}
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