mirror of https://github.com/node-red/node-red.git
97 lines
3.1 KiB
JavaScript
97 lines
3.1 KiB
JavaScript
/**
|
|
* Copyright 2013 IBM Corp.
|
|
*
|
|
* 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.
|
|
**/
|
|
|
|
var RED = require("../../red/red");
|
|
var util = require("util");
|
|
var redis = require("redis");
|
|
|
|
var hashFieldRE = /^([^=]+)=(.*)$/;
|
|
|
|
var redisConnectionPool = function() {
|
|
var connections = {};
|
|
var obj = {
|
|
get: function(host,port) {
|
|
var id = host+":"+port;
|
|
if (!connections[id]) {
|
|
connections[id] = redis.createClient(port,host);
|
|
connections[id].on("error",function(err) {
|
|
util.log("[redis] "+err);
|
|
});
|
|
connections[id].on("connect",function() {
|
|
util.log("[redis] connected to "+host+":"+port);
|
|
});
|
|
connections[id]._id = id;
|
|
connections[id]._nodeCount = 0;
|
|
}
|
|
connections[id]._nodeCount += 1;
|
|
return connections[id];
|
|
},
|
|
close: function(connection) {
|
|
connection._nodeCount -= 1;
|
|
if (connection._nodeCount == 0) {
|
|
if (connection) {
|
|
clearTimeout(connection.retry_timer);
|
|
connection.end();
|
|
}
|
|
delete connections[connection._id];
|
|
}
|
|
}
|
|
};
|
|
return obj;
|
|
}();
|
|
|
|
|
|
function RedisOutNode(n) {
|
|
RED.nodes.createNode(this,n);
|
|
this.port = n.port||"6379";
|
|
this.hostname = n.hostname||"127.0.0.1";
|
|
this.key = n.key;
|
|
this.structtype = n.structtype;
|
|
|
|
this.client = redisConnectionPool.get(this.hostname,this.port);
|
|
|
|
this.on("input", function(msg) {
|
|
if (msg != null) {
|
|
var k = this.key || msg.topic;
|
|
if (k) {
|
|
if (this.structtype == "string") {
|
|
this.client.set(k,msg.payload);
|
|
} else if (this.structtype == "hash") {
|
|
var r = hashFieldRE.exec(msg.payload);
|
|
if (r) {
|
|
this.client.hset(k,r[1],r[2]);
|
|
} else {
|
|
this.warn("Invalid payload for redis hash");
|
|
}
|
|
} else if (this.structtype == "set") {
|
|
this.client.sadd(k,msg.payload);
|
|
} else if (this.structtype == "list") {
|
|
this.client.rpush(k,msg.payload);
|
|
}
|
|
} else {
|
|
this.warn("No key or topic set");
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
RED.nodes.registerType("redis out",RedisOutNode);
|
|
|
|
RedisOutNode.prototype.close = function() {
|
|
redisConnectionPool.close(this.client);
|
|
}
|
|
|