From 02c21c6e89f388e1b7c79c86750990eb471ddd0f Mon Sep 17 00:00:00 2001 From: dceejay Date: Sat, 13 Jun 2015 18:47:22 +0100 Subject: [PATCH] Add redis to node-red-nodes, fix lint etc --- storage/redis/65-redisout.html | 105 +++++++++++++++++++ storage/redis/65-redisout.js | 110 ++++++++++++++++++++ storage/redis/LICENSE | 177 +++++++++++++++++++++++++++++++++ storage/redis/README.md | 34 +++++++ storage/redis/package.json | 24 +++++ 5 files changed, 450 insertions(+) create mode 100644 storage/redis/65-redisout.html create mode 100644 storage/redis/65-redisout.js create mode 100644 storage/redis/LICENSE create mode 100644 storage/redis/README.md create mode 100644 storage/redis/package.json diff --git a/storage/redis/65-redisout.html b/storage/redis/65-redisout.html new file mode 100644 index 00000000..dc1f7b83 --- /dev/null +++ b/storage/redis/65-redisout.html @@ -0,0 +1,105 @@ + + + + + + + diff --git a/storage/redis/65-redisout.js b/storage/redis/65-redisout.js new file mode 100644 index 00000000..6d98be90 --- /dev/null +++ b/storage/redis/65-redisout.js @@ -0,0 +1,110 @@ +/** + * 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. + **/ + +module.exports = function(RED) { + "use strict"; + 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) { + RED.log.error(err); + }); + connections[id].on("connect",function() { + if (RED.settings.verbose) { RED.log.info("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); + + if (this.client.connected) { + this.status({fill:"green",shape:"dot",text:"connected"}); + } else { + this.status({fill:"red",shape:"ring",text:"disconnected"},true); + } + + var node = this; + this.client.on("end", function() { + node.status({fill:"red",shape:"ring",text:"disconnected"}); + }); + this.client.on("connect", function() { + node.status({fill:"green",shape:"dot",text:"connected"}); + }); + + this.on("input", function(msg) { + var k = this.key || msg.topic; + if (k) { + if (this.structtype == "string") { + this.client.set(k,RED.util.ensureString(msg.payload)); + } else if (this.structtype == "hash") { + if (typeof msg.payload == "object") { + this.client.hmset(k,msg.payload); + } else { + 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"); + } + }); + this.on("close", function() { + redisConnectionPool.close(node.client); + }); + } + RED.nodes.registerType("redis out",RedisOutNode); +} diff --git a/storage/redis/LICENSE b/storage/redis/LICENSE new file mode 100644 index 00000000..f433b1a5 --- /dev/null +++ b/storage/redis/LICENSE @@ -0,0 +1,177 @@ + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. 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For details see the Redis site. + + +Install +------- + +Run the following command in the root directory of your Node-RED install. +Usually this is `~/.node-red` . + + npm install node-red-node-redis + +Usage +----- + +Simple node to save data in a local Redis instance + +###Output + +A Redis output node. Options include **Hash**, **Set**, **List** and **String**. + +If **key** is blank, the **msg.topic** will be used as the key. + +If **type** is *hash*, **msg.payload** should be an *object* or *field=value* string. diff --git a/storage/redis/package.json b/storage/redis/package.json new file mode 100644 index 00000000..b1bab230 --- /dev/null +++ b/storage/redis/package.json @@ -0,0 +1,24 @@ +{ + "name" : "node-red-node-redis", + "version" : "0.0.1", + "description" : "A Node-RED node to save data to an Redis database", + "dependencies" : { + "redis" : "0.12.1" + }, + "repository" : { + "type":"git", + "url":"https://github.com/node-red/node-red-nodes/tree/master/storage/redis" + }, + "license": "Apache-2.0", + "keywords": [ "node-red", "redis" ], + "node-red" : { + "nodes" : { + "redis": "65-redisout.js" + } + }, + "author": { + "name": "Dave Conway-Jones", + "email": "ceejay@vnet.ibm.com", + "url": "http://nodered.org" + } +}