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@uppy/fs-tail-stream
Advanced tools
Readme
This is a fork of eugeneware/fs-tail-stream that fixes an encoding issue. Switch back to the original when https://github.com/eugeneware/fs-tail-stream/pull/2 is merged and released.
fs.createReadStream
that supports ongoing tailing of files
The built in fs.createReadStream
function stops streaming once the file has
come to an end.
If you want to tail the file so that it keeps streaming data when the file grows then you're out of luck.
This module adds a { tail: true }
option to the options which will keep
streaming data as data is added to the file, or until the .close()
method
is called on the read stream.
Because this module wraps the underlying fs.createReadStream
function all
the options work as expected.
This module is installed via npm:
$ npm install fs-tail-stream
var fst = require('fs-tail-stream');
var fs = require('fs');
var ws = fs.createWriteStream(tmpFile, { flags: 'a' });
// file with the text 'hello' in it
var tmpFile = '/tmp/my-temp-file.txt';
// same parameters as `fs.createReadStream`, but pass through `tail: true`
fst.createReadStream(tmpFile, { encoding: 'utf8', start: 80, tail: true })
.on('sync', function () {
// called when at the end of the file
var self = this;
// write some new data to the file
ws.write('world', 'utf8', function (err) {
// stop watching for files, and let the file stream end
// otherwise the file watching will be indefinite and the process
// won't' exit
self.close();
});
})
// will print out both the existing contents of the file, plus the
// newly added data
.on('data', console.log);
// prints out:
// hello
// world
FAQs
fs.createReadStream that supports ongoing tailing of files
The npm package @uppy/fs-tail-stream receives a total of 22 weekly downloads. As such, @uppy/fs-tail-stream popularity was classified as not popular.
We found that @uppy/fs-tail-stream demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 2 open source maintainers collaborating on the project.
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