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handler.go
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handler.go
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/*
* Copyright GoIIoT (https://github.com/goiiot)
*
* 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 libmqtt
// ConnHandler is the handler which tend to the Connect result
// server is the server address provided by user in client creation call
// code is the ConnResult code
// err is the error happened when connect to server, if a error happened,
// the code value will max byte value (255)
type ConnHandler func(server string, code ConnAckCode, err error)
// TopicHandler handles topic sub message
// topic is the client user provided topic
// code can be SubOkMaxQos0, SubOkMaxQos1, SubOkMaxQos2, SubFail
type TopicHandler func(topic string, qos QosLevel, msg []byte)
// PubHandler handles the error occurred when publish some message
// if err is not nil, that means a error occurred when sending pub msg
type PubHandler func(topic string, err error)
// SubHandler handles the error occurred when subscribe some topic
// if err is not nil, that means a error occurred when sending sub msg
type SubHandler func(topics []*Topic, err error)
// UnSubHandler handles the error occurred when publish some message
type UnSubHandler func(topic []string, err error)
// NetHandler handles the error occurred when net broken
type NetHandler func(server string, err error)
// PersistHandler handles err happened when persist process has trouble
type PersistHandler func(err error)