Created
November 2, 2022 20:51
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Call bash commands from nodeJS and pipe the output to the console/terminal
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| // use `git-cli` to get the current commit | |
| function getCurrentCommit () { | |
| return shSync('git rev-parse HEAD').toString().trim() || ''; | |
| } | |
| async function build() { | |
| const currentCommit = getCurrentCommit(); | |
| console.log('We are at commit:', currentCommit); | |
| console.log('Building our docker image'); // could be any other bash script/command | |
| await sh('docker build -t my-image:1.0 .'); | |
| console.log('Finished building docker!'); | |
| } | |
| build(); |
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| const { spawn, spawnSync } = require('child_process'); | |
| const l = console.log; | |
| // execSync doesn't return the console output. | |
| // `shSync` will return the output once it is complete | |
| function shSync (command) { | |
| l('$', command); | |
| const child = spawnSync( | |
| 'bash', | |
| ['-c', command], | |
| { encoding: 'utf8' } | |
| ); | |
| if (child.stdout) { | |
| l(child.stdout); | |
| } | |
| if (child.stderr) { | |
| l(child.stderr); | |
| } | |
| const { status } = child; | |
| // l('script completed with code: ' + status); | |
| if (status !== 0) { | |
| const e = new Error(status); | |
| l('Script failed', { | |
| command, | |
| code: status, | |
| stack: e.stack | |
| }); | |
| process.exit(status); | |
| } | |
| return child.stdout; | |
| } | |
| // all output will be logged to console as it happens (unless `shSync`) | |
| // execSync does not display the output or errors. | |
| async function sh (command) { | |
| l('$', command); | |
| return new Promise((resolve, reject) => { | |
| const child = spawn( | |
| 'bash', | |
| ['-c', command], | |
| { encoding: 'utf8' } | |
| ); | |
| child.stdout.on('data', (data) => l(data.toString())); | |
| child.stderr.on('data', (data) => l(data.toString())); | |
| const e = new Error(); // we want the stack from the original call – not the callback | |
| child.on('close', (code) => { | |
| // l('script completed with code: ' + code); | |
| if (code === 0) { | |
| resolve(code); | |
| } else { | |
| l('Script failed', { | |
| command, | |
| code, | |
| stack: e.stack | |
| }); | |
| process.exit(code); | |
| } | |
| }); | |
| }); | |
| } | |
| module.exports = { | |
| sh, | |
| shSync | |
| }; |
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