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index.js
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index.js
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'use strict';
const jsonfile = require('jsonfile');
const TaskManager = require('./lib/task-manager');
const Tools = require('./lib/tools');
const log = Tools.log;
const path = require('path').posix;
path.sep = "/";
__dirname = __dirname.split(/\\/g).join('/');
// Setup environment variables
process.env["CLI"] = false;
// Package info
const npmConfig = jsonfile.readFileSync(path.join(__dirname, "./package.json"));
// Set package options
const packageOptions = jsonfile.readFileSync(path.join(__dirname, "./netl.config.json"));
log.setLogPath(path.normalize(packageOptions.logPath));
// Overwrite package options with user options (if there are user options)
var userOptions;
try {
userOptions = jsonfile.readFileSync(path.join(process.cwd(), "./netl.config.json"));
} catch (error) {
log.warn(`Error loading user-defined netl configuration options. Error reading path: ${path.join(process.cwd(), "./netl.config.json")}`);
userOptions = {};
};
if (userOptions.logPath) log.setLogPath(path.normalize(userOptions.logPath));
// Start standard library
const netl = TaskManager(packageOptions);
packageOptions.extractions
.concat((userOptions.extractions || []).map((p) => path.join(process.cwd(), p)))
.forEach((filePath) => {
netl.loadExtractionModule(require(filePath));
});
packageOptions.transformations
.concat((userOptions.transformations || []).map((p) => path.join(process.cwd(), p)))
.forEach((filePath) => {
netl.loadTransformationModule(require(filePath));
});
packageOptions.loads
.concat((userOptions.loads || []).map((p) => path.join(process.cwd(), p)))
.forEach((filePath) => {
netl.loadLoadModule(require(filePath));
});
packageOptions.functions
.concat((userOptions.functions || []).map((p) => path.join(process.cwd(), p)))
.forEach((filePath) => {
netl.loadFunctionModule(require(filePath));
});
/*
******************************************
******************************************
******************************************
****************** CLI *******************
******************************************
******************************************
******************************************
*/
const CLI = (function() {
var rl;
/**
* Loads a JSON file from taskPath
* Executes tasks from JSON configuration
* @param {string} taskPath
*/
function loadTask(taskPath) {
// Read Task configuration
try {
var configFile = jsonfile.readFileSync(taskPath);
} catch (error) {
log.error("Error loading task: reading config file:\n" + error);
log.console("Error loading task: reading config file:\n" + error);
return;
};
// Load all tasks in the config file
configFile.forEach(async(configuration, i, arr) => {
// Create task
log.info(`Creating new task : ${configuration.ID}`);
log.console(`Creating new task : ${configuration.ID} (logging to ${log.logPath})`);
// Wait for task completion
const taskResult = await netl.taskManager.doTask(configuration);
log.info(taskResult);
log.console(taskResult);
// Delete task
var killResult
try {
killResult = await netl.taskManager.killTask(configuration.ID);
} catch (error) {
killResult = "Error killing task: " + error;
};
log.info(killResult);
log.console(killResult);
});
};
/**
* Processes user input
* @param {string} input
*/
function handleInput(input) {
process.stdout.write("> ");
var inputs = input.split(' ');
var cmd = inputs[0].toUpperCase();
var cmd2;
var fPath;
switch (cmd) {
case 'LOAD':
cmd2 = (inputs[1]) ? inputs[1].toUpperCase() : null;
switch (cmd2) {
case 'FILE':
fPath = (inputs[2]) ? path.normalize(inputs[2]) : null;
if (fPath) {
loadTask(fPath);
break;
};
default:
log.console("Incorrect argument for 'LOAD': 'load file <path>'");
break;
};
break;
case 'SETLOG':
fPath = (inputs[1]) ? inputs[1] : null;
if (fPath) {
log.setLogPath(fPath);
break;
}
break
default:
log.console();
log.console("Unknown CMD. Available commands are:");
log.console('1. load file <file>');
log.console('2. setlog <file>');
};
};
/**
* Starts CLI
*/
function start() {
const readline = require('readline');
rl = readline.createInterface({
input: process.stdin,
output: process.stdout
}).on('line', (input) => {
handleInput(input);
});
};
/**
* Stops the CLI
*/
function stop() {
rl.close();
};
return {
start: start,
stop: stop,
loadTask: loadTask
};
})();
module.exports = (() => {
// Log start of app
log.info(`*** Started ${npmConfig.name} V${npmConfig.version} © ${npmConfig.copyright}`);
log.info(`Timestamps in UTC time`);
// Get process flags and arguments
var args = require('minimist')(process.argv.slice(2));
if (!args.task && !args.cli) throw new Error("Either CLI flag (--cli) or task argument (--task <path>) is required");
// Start the CLI or just run the specified task file(s)
if (args.cli) {
process.env["CLI"] = true;
console.log();
log.console(`> ---------------------\n> ${npmConfig.name} V${npmConfig.version} © ${npmConfig.copyright}\n> ---------------------\n`);
CLI.start();
} else {
args.task.split(",").forEach((taskFilePath) => {
CLI.loadTask(path.normalize(taskFilePath));
});
};
})();