93 lines
2.6 KiB
JavaScript
93 lines
2.6 KiB
JavaScript
'use strict';
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var errorCodes = require('../app/postgresql/error_codes').codeToCondition;
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var jobStatus = require('./job_status');
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function JobRunner(jobService, jobQueue, queryRunner, userDatabaseMetadataService) {
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this.jobService = jobService;
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this.jobQueue = jobQueue;
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this.queryRunner = queryRunner;
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this.userDatabaseMetadataService = userDatabaseMetadataService; // TODO: move to queryRunner
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}
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JobRunner.prototype.run = function (job_id, callback) {
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var self = this;
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self.jobService.get(job_id, function (err, job) {
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if (err) {
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return callback(err);
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}
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var query = job.getNextQuery();
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try {
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job.setStatus(jobStatus.RUNNING);
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} catch (err) {
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return callback(err);
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}
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self.jobService.save(job, function (err, job) {
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if (err) {
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return callback(err);
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}
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self._run(job, query, callback);
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});
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});
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};
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JobRunner.prototype._run = function (job, query, callback) {
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var self = this;
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// TODO: move to query
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self.userDatabaseMetadataService.getUserMetadata(job.data.user, function (err, userDatabaseMetadata) {
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if (err) {
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return callback(err);
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}
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self.queryRunner.run(job.data.job_id, query, userDatabaseMetadata, function (err /*, result */) {
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if (err) {
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// if query has been cancelled then it's going to get the current
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// job status saved by query_canceller
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if (errorCodes[err.code.toString()] === 'query_canceled') {
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return self.jobService.get(job.data.job_id, callback);
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}
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try {
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job.setStatus(jobStatus.FAILED);
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} catch (err) {
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return callback(err);
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}
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return self.jobService.save(job, callback);
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}
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try {
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job.setStatus(jobStatus.DONE);
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} catch (err) {
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return callback(err);
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}
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self.jobService.save(job, function (err, job) {
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if (err) {
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return callback(err);
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}
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if (job.isDone()) {
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return callback(null, job);
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}
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self.jobQueue.enqueue(job.data.job_id, userDatabaseMetadata.host, function (err) {
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if (err) {
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return callback(err);
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}
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callback(null, job);
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});
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});
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});
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});
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};
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module.exports = JobRunner;
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