mirror of
https://github.com/node-red/node-red-nodes.git
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128 lines
5.3 KiB
JavaScript
128 lines
5.3 KiB
JavaScript
module.exports = function(RED) {
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"use strict";
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var reconnect = RED.settings.sqliteReconnectTime || 20000;
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var sqlite3 = require('sqlite3');
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function SqliteNodeDB(n) {
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RED.nodes.createNode(this,n);
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this.dbname = n.db;
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var node = this;
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node.doConnect = function() {
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node.db = new sqlite3.Database(node.dbname);
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node.db.on('open', function() {
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if (node.tick) { clearTimeout(node.tick); }
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node.log("opened "+node.dbname+" ok");
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});
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node.db.on('error', function(err) {
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node.error("failed to open "+node.dbname, err);
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node.tick = setTimeout(function() { node.doConnect(); }, reconnect);
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});
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}
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node.on('close', function (done) {
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if (node.tick) { clearTimeout(node.tick); }
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if (node.db) { node.db.close(done()); }
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else { done(); }
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});
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}
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RED.nodes.registerType("sqlitedb",SqliteNodeDB);
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function SqliteNodeIn(n) {
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RED.nodes.createNode(this,n);
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this.mydb = n.mydb;
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this.sqlquery = n.sqlquery||"msg.topic";
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this.sql = n.sql;
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this.mydbConfig = RED.nodes.getNode(this.mydb);
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var node = this;
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node.status({});
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if (this.mydbConfig) {
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this.mydbConfig.doConnect();
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var bind = [];
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node.on("input", function(msg) {
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if (this.sqlquery == "msg.topic"){
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if (typeof msg.topic === 'string') {
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bind = Array.isArray(msg.payload) ? msg.payload : [];
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node.mydbConfig.db.all(msg.topic, bind, function(err, row) {
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if (err) { node.error(err,msg); }
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else {
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msg.payload = row;
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node.send(msg);
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}
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});
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}
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else {
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node.error("msg.topic : the query is not defined as a string",msg);
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node.status({fill:"red",shape:"dot",text:"msg.topic error"});
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}
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}
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if (this.sqlquery == "batch") {
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if (typeof msg.topic === 'string') {
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node.mydbConfig.db.exec(msg.topic, function(err) {
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if (err) { node.error(err,msg);}
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else {
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msg.payload = [];
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node.send(msg);
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}
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});
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}
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else {
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node.error("msg.topic : the query is not defined as string", msg);
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node.status({fill:"red", shape:"dot",text:"msg.topic error"});
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}
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}
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if (this.sqlquery == "fixed"){
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if (typeof this.sql === 'string'){
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bind = Array.isArray(msg.payload) ? msg.payload : [];
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node.mydbConfig.db.all(this.sql, bind, function(err, row) {
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if (err) { node.error(err,msg); }
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else {
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msg.payload = row;
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node.send(msg);
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}
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});
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}
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else{
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if (this.sql === null || this.sql == ""){
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node.error("SQL statement config not set up",msg);
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node.status({fill:"red",shape:"dot",text:"SQL config not set up"});
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}
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}
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}
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if (this.sqlquery == "prepared"){
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if (typeof this.sql === 'string' && typeof msg.params !== "undefined" && typeof msg.params === "object"){
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node.mydbConfig.db.all(this.sql, msg.params, function(err, row) {
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if (err) { node.error(err,msg); }
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else {
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msg.payload = row;
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node.send(msg);
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}
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});
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}
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else{
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if (this.sql === null || this.sql == ""){
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node.error("Prepared statement config not set up",msg);
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node.status({fill:"red",shape:"dot",text:"Prepared statement not set up"});
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}
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if (typeof msg.params == "undefined"){
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node.error("msg.params not passed");
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node.status({fill:"red",shape:"dot",text:"msg.params not defined"});
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}
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else if (typeof msg.params != "object"){
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node.error("msg.params not an object");
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node.status({fill:"red",shape:"dot",text:"msg.params not an object"});
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}
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}
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}
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});
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}
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else {
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this.error("Sqlite database not configured");
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}
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}
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RED.nodes.registerType("sqlite",SqliteNodeIn);
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}
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