66 lines
2.1 KiB
JavaScript
66 lines
2.1 KiB
JavaScript
|
|
module.exports = function(RED) {
|
|
"use strict";
|
|
var reconnect = RED.settings.sqliteReconnectTime || 20000;
|
|
var sqlite3 = require('sqlite3');
|
|
|
|
function SqliteNodeDB(n) {
|
|
RED.nodes.createNode(this,n);
|
|
|
|
this.dbname = n.db;
|
|
var node = this;
|
|
|
|
node.doConnect = function() {
|
|
node.db = new sqlite3.Database(node.dbname);
|
|
node.db.on('open', function() {
|
|
if (node.tick) { clearTimeout(node.tick); }
|
|
node.log("opened "+node.dbname+" ok");
|
|
});
|
|
node.db.on('error', function(err) {
|
|
node.error("failed to open "+node.dbname, err);
|
|
node.tick = setTimeout(function() { node.doConnect(); }, reconnect);
|
|
});
|
|
}
|
|
|
|
node.on('close', function () {
|
|
if (node.tick) { clearTimeout(node.tick); }
|
|
if (node.db) { node.db.close(); }
|
|
});
|
|
}
|
|
RED.nodes.registerType("sqlitedb",SqliteNodeDB);
|
|
|
|
|
|
function SqliteNodeIn(n) {
|
|
RED.nodes.createNode(this,n);
|
|
this.mydb = n.mydb;
|
|
this.mydbConfig = RED.nodes.getNode(this.mydb);
|
|
|
|
if (this.mydbConfig) {
|
|
this.mydbConfig.doConnect();
|
|
var node = this;
|
|
node.on("input", function(msg) {
|
|
if (typeof msg.topic === 'string') {
|
|
//console.log("query:",msg.topic);
|
|
var bind = Array.isArray(msg.payload) ? msg.payload : [];
|
|
node.mydbConfig.db.all(msg.topic, bind, function(err, row) {
|
|
if (err) { node.error(err,msg); }
|
|
else {
|
|
msg.payload = row;
|
|
node.send(msg);
|
|
}
|
|
});
|
|
}
|
|
else {
|
|
if (typeof msg.topic !== 'string') {
|
|
node.error("msg.topic : the query is not defined as a string",msg);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
else {
|
|
this.error("Sqlite database not configured");
|
|
}
|
|
}
|
|
RED.nodes.registerType("sqlite",SqliteNodeIn);
|
|
}
|