temptmp - Temp Files & Directories For Node (Again)

temptmp is a module for generating unique temporary file/directory names and files, as well as automatic tracking and cleanup. Tracking and cleanup can optionally use a session identifier such that independent tracking can be used without conflict in long running processes.

temptmp is inspired by node-temp and node-tmp.

Compatability

temptmp is written using ES6 & therefore requires newer Node.js (think 6.x+) features.

Installation

npm install temptmp

Usage

Setup

Create a new session with createSession, optionally passing a sessionId. You may also enable tracking or explicitly use the createTrackedSession API. Note that at any time pauseTracking or resumeTracking can be called.

const temptmp = require('temptmp').createTrackedSession('my_session');

Create ~~temporary~~ temptmp stuff

The APIs path, open, and mkdir take an optional options object and a completion callback.

Options

• prefix (String): A prefix for the temporary file name. Defaults to ''
• suffix (String): A suffix for the temporary file name. Defaults to ''
• dir (String): Directory to create temporary file/directory. Defaults to os.tmpdir
• mode (Number): Mode for new file/directory. Defaults to 0600 for files and 0700 for directories.
• flags (Number): Creation flags for files. Defaults to (O_CREAT | O_TRUNC | O_RDWR | O_EXCL)

Cleanup

APIs

Get a Path

const temptmp = require('temptmp').createTrackedSession('my_session');

temptmp.path( (err, path) => {
  // path is present if !err
});

// though we asked for tracking, we didn't actually create any files

Create a File

// equiv to createTrackedSession('my_session')
const temptmp = require('temptmp').createSession('my_session', true);

temptmp.open( (err, tempFileInfo) => {
  // tempFileInfo.path and tempFileInfo.fd are avail if !err
});

// files created are auto-cleaned up at process exit since we asked for tracking

Create a Directory

//	note that we're not asking for tracking
const temptmp = require('temptmp').createSession('my_session');

temptmp.mkdir( { prefix : 'roffle', suffix : 'copter' }, (err, path) => {
  // path is present if !err
  // ...do stuff with path...
  // temptmp.cleanup(); // clean up tracked items in "my_session" only!
});

// we didn't ask for tracking; no additional cleanup here.

Other APIs

Remember that your temptmp object also has pauseTracking and resumeTracking to selectively track or omit particular files from tracking.

Contributing

Feel free to submit comments/feedback and PR requests. Note that I do not have intentions of supporting anything older than ES6. If you need this, fork away!

License

Released under the BSD 2-clause license:

Copyright (c) 2017, Bryan D. Ashby All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

• Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

• Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.