55 lines
1.6 KiB
JavaScript
55 lines
1.6 KiB
JavaScript
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'use strict';
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var PSQL = require('cartodb-psql');
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var debug = require('./util/debug')('query-runner');
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function QueryRunner(userDatabaseMetadataService) {
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this.userDatabaseMetadataService = userDatabaseMetadataService;
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}
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module.exports = QueryRunner;
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function hasDBParams (dbparams) {
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return (dbparams.user && dbparams.host && dbparams.port && dbparams.dbname && dbparams.pass);
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}
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QueryRunner.prototype.run = function (job_id, sql, user, timeout, dbparams, callback) {
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if (hasDBParams(dbparams)) {
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return this._run(dbparams, job_id, sql, timeout, callback);
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}
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const dbConfigurationError = new Error('Batch Job DB misconfiguration');
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return callback(dbConfigurationError);
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};
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QueryRunner.prototype._run = function (dbparams, job_id, sql, timeout, callback) {
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var pg = new PSQL(dbparams);
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pg.query('SET statement_timeout=' + timeout, function (err) {
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if(err) {
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return callback(err);
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}
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// mark query to allow to users cancel their queries
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sql = '/* ' + job_id + ' */ ' + sql;
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debug('Running query [timeout=%d] %s', timeout, sql);
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pg.eventedQuery(sql, function (err, query) {
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if (err) {
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return callback(err);
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}
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query.on('error', callback);
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query.on('end', function (result) {
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// only if result is present then query is done sucessfully otherwise an error has happened
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// and it was handled by error listener
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if (result) {
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callback(null, result);
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}
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});
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});
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});
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};
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