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Ensure last mqtt node turns off the lights before closing

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The mqtt-broker node disconnects when the last node using it
is closed. But that node-close was not waiting for the disconnect
to complete. This led to a race-condition where the using node
was recreated and started trying to use the broker node whilst it
was still disconnecting.
This commit is contained in:
Nick O'Leary 2015-12-22 23:25:29 +00:00
parent 86064651af
commit 62694da7e6
1 changed files with 17 additions and 9 deletions
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26
nodes/core/io/10-mqtt.js
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@ -45,6 +45,7 @@ module.exports = function(RED) {
this.brokerurl = "";
this.connected = false;
this.connecting = false;
this.closing = false;
this.options = {};
this.queue = [];
this.subscriptions = {};
@ -136,11 +137,17 @@ module.exports = function(RED) {
}
};
this.deregister = function(mqttNode){
this.deregister = function(mqttNode,done){
delete node.users[mqttNode.id];
if (Object.keys(node.users).length === 0) {
node.client.end();
if (node.closing) {
return done();
}
if (Object.keys(node.users).length === 0) {
if (node.client) {
return node.client.end(done);
}
}
done();
};
this.connect = function () {
@ -274,8 +281,9 @@ module.exports = function(RED) {
};
this.on('close', function(done) {
this.closing = true;
if (this.connected) {
this.client.on('close', function() {
this.client.once('close', function() {
done();
});
this.client.end();
@ -302,6 +310,7 @@ module.exports = function(RED) {
if (this.brokerConn) {
this.status({fill:"red",shape:"ring",text:"common.status.disconnected"});
if (this.topic) {
node.brokerConn.register(this);
this.brokerConn.subscribe(this.topic,2,function(topic,payload,packet) {
if (isUtf8(payload)) { payload = payload.toString(); }
var msg = {topic:topic,payload:payload, qos: packet.qos, retain: packet.retain};
@ -313,15 +322,14 @@ module.exports = function(RED) {
if (this.brokerConn.connected) {
node.status({fill:"green",shape:"dot",text:"common.status.connected"});
}
node.brokerConn.register(this);
}
else {
this.error(RED._("mqtt.errors.not-defined"));
}
this.on('close', function() {
this.on('close', function(done) {
if (node.brokerConn) {
node.brokerConn.unsubscribe(node.topic,node.id);
node.brokerConn.deregister(node);
node.brokerConn.deregister(node,done);
}
});
} else {
@ -365,8 +373,8 @@ module.exports = function(RED) {
node.status({fill:"green",shape:"dot",text:"common.status.connected"});
}
node.brokerConn.register(node);
this.on('close', function() {
node.brokerConn.deregister(node);
this.on('close', function(done) {
node.brokerConn.deregister(node,done);
});
} else {
this.error(RED._("mqtt.errors.missing-config"));