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import * as colors from 'colors/safe';
import * as es from 'event-stream';
import * as fs from 'fs';
import { Tree } from 'jargs';
import * as path from 'path';
import * as WebSocket from 'ws';
import * as constants from './constants';
import {
Colors,
COLORS,
DEFAULT_ENV,
SOCKET_PORT,
UTF8,
} from './constants';
import * as logger from './logger';
import * as procfile from './procfile';
import router, { ACTIONS, Routes } from './router';
import {
getAvailablePort,
getConfigPath,
getDisplayName,
getEnvVariables,
getIn,
getProjectName,
getTimeNow,
handleShebang,
injectEnvVars,
loadWtfJson,
onClose,
PortError,
wrapDisplayName,
} from './utils';
const routes: Routes = {};
let ws: WebSocket;
export const applyRoutes = (routesToApply: Routes) => {
/* istanbul ignore else */
if (ws.readyState === WebSocket.OPEN) {
ws.send(JSON.stringify({type: ACTIONS.ADD_ROUTES, payload: routesToApply}));
}
};
export const addRoute = (processName: string, color: Colors, url: string, port: number) => {
routes[url] = {
processName,
url,
port,
color,
};
/* istanbul ignore else */
if (ws.readyState === WebSocket.OPEN) {
ws.send(JSON.stringify({type: ACTIONS.ADD_ROUTE, payload: {processName, color, url, port}}));
}
};
export const startProcessWithMaybePort = (
item: procfile.Command,
processName: string,
longestName: number,
env: string,
color: Colors,
tree: Tree,
envVariables: {[i: string]: string},
configEnvVariables: {[i: string]: string},
url?: string,
port?: number
) => {
const { time } = tree.flags;
const displayName = getDisplayName(processName, env);
logger.log(colors[color](`Starting ${displayName} process...`));
const environment: {[i: string]: string} = {
...envVariables,
...configEnvVariables,
...process.env,
PORT: process.env.PORT || '',
PYTHONUNBUFFERED: 'true',
};
if (url && port) {
environment.PORT = port.toString();
addRoute(displayName, color, url, port);
}
const resolvedCommand = handleShebang(item.command);
const commandOptions = injectEnvVars(item.options, environment);
const subProcess = childProcess.spawn(
resolvedCommand,
commandOptions,
{
cwd: process.cwd(),
shell: true,
env: environment,
stdio: 'pipe',
}
);
logger.log(colors[color](`Running ${resolvedCommand} ${commandOptions.join(' ')}`));
logger.log(colors[color](`PID: ${subProcess.pid}, Parent PID: ${process.pid}\n`));
const getPrefix = () => {
const timeNow = time ? getTimeNow() + ' ' : '';
return colors[color](wrapDisplayName(timeNow + displayName, longestName + timeNow.length));
};
const mapOutput = (message: any, cb: any) => {
cb(null, `${getPrefix()}${message}\n`);
};
subProcess.stdout
.pipe(es.split('\n'))
.pipe(es.map(mapOutput))
.pipe(process.stderr);
subProcess.stderr
.pipe(es.split('\n'))
.pipe(es.map(mapOutput))
.pipe(process.stderr);
subProcess.on('close', (code) => onClose(getPrefix(), code));
};
export const startProcess = (
item: procfile.Command,
processName: string,
longestName: number,
env: string,
color: Colors,
tree: Tree,
envVariables: {[i: string]: string},
configEnvVariables: {[i: string]: string},
url?: string
) => {
if (url) {
getAvailablePort((error: PortError | undefined, port?: number) => {
if (error) {
logger.log(error.message);
return process.exit(1);
}
startProcessWithMaybePort(
item,
processName,
longestName,
env,
color,
tree,
envVariables,
configEnvVariables,
url,
port
);
});
} else {
startProcessWithMaybePort(
item,
processName,
longestName,
env,
color,
tree,
envVariables,
configEnvVariables
);
}
};
export const startProcesses = (
procfileData: string,
wtfJson: constants.ConfigProject,
env: string,
tree: Tree,
envVariables: {[i: string]: string}
) => {
let { processes } = tree.args;
let { exclude } = tree.kwargs;
processes = Array.isArray(processes) ? processes : [];
exclude = Array.isArray(exclude) ? exclude : [];
const procfileConfig = procfile.parse(procfileData.toString());
let longestName: number = 0;
let index = 0;
for (const processName in procfileConfig) {
/* istanbul ignore else */
if (procfileConfig.hasOwnProperty(processName)) {
const displayName = getDisplayName(processName, env);
if (
(!processes.length || processes.indexOf(processName) >= 0) &&
(!longestName || displayName.length > longestName) &&
exclude.indexOf(processName) < 0
) {
longestName = displayName.length;
}
}
}
for (const processName in procfileConfig) {
/* istanbul ignore else */
if (exclude.indexOf(processName) < 0 && procfileConfig.hasOwnProperty(processName)) {
if ((!processes.length || processes.indexOf(processName) >= 0) && exclude.indexOf(processName) < 0) {
const item = procfileConfig[processName];
const url = getIn(wtfJson, ['routes', processName]);
const configEnvVariables = getIn(wtfJson, ['env', env]) || {};
startProcess(
item,
processName,
longestName,
env,
COLORS[index % (COLORS.length)],
tree,
envVariables,
configEnvVariables,
url
);
}
index += 1;
}
}
};
export const readWtfJsonAndEnv = (procfileData: string, tree: Tree) => {
const configPath = getConfigPath();
const projectName = getProjectName();
let { env } = tree.kwargs;
env = typeof env === 'string' ? env : DEFAULT_ENV;
const config = loadWtfJson(configPath, projectName, env);
const envPath = path.join(process.cwd(), 'etc/environments', env, 'env');
const envVariables = getEnvVariables(envPath);
startProcesses(procfileData, getIn(config, [projectName]) || {}, env, tree, envVariables);
};
export const startRouterCommunication = () => {
ws = new WebSocket(`ws://localhost:${SOCKET_PORT}`);
ws.on('open', () => {
applyRoutes(routes);
});
ws.on('close', () => {
router();
setTimeout(startRouterCommunication, 1000);
});
ws.on('message', (data) => {
logger.log(data.toString());
});
};
const start = (tree: Tree) => {
router();
startRouterCommunication();
process.stdout.setMaxListeners(20);
process.stderr.setMaxListeners(20);
let { env } = tree.kwargs;
env = typeof env === 'string' ? env : DEFAULT_ENV;
const procfilePath = path.join(process.cwd(), 'etc/environments', env, 'procfile');
if (!fs.existsSync(procfilePath)) {
logger.log(`No procfile found at ${procfilePath}`);
return process.exit(1);
}
const procfileContent = fs.readFileSync(procfilePath, UTF8);
readWtfJsonAndEnv(procfileContent, tree);
};
export default start;
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