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json-text-sequence
Advanced tools
Parse and generate RS-delimited JSON sequences according to draft-ietf-json-text-sequence
Parse and generate JSON text sequences as defined in RFC 7464.
JSON text sequences are nice for unambiguous JSON log files. They are resilient to many forms of damage such as truncation, multiple writers incorrectly configured to write to the same file, corrupted JSON, etc. An example sequence:
␞{"d":"2014-09-22T21:58:35.270Z","value":6}
␞{"d":"2014-09-22T21:59:15.117Z","value":12}
Where "␞" is the ASCII "Record Separator" character (U+001E), and "" is the ASCII "LINE FEED" character (U+000A), otherwise known as "\n".
To install:
npm install json-text-sequence
To parse the format, pipe an input source into a parser stream:
const parser = require('json-text-sequence').parser;
const fs = require('fs');
const p = new parser()
.on('data', obj => {
console.log('JSON:', obj);
})
.on('truncated', buf => {
console.log('Truncated:', buf);
})
.on('invalid', buf => {
console.log('Invalid:', buf);
})
.on('finish', () => {
console.log('DONE');
});
fs.createReadStream('example.log').pipe(p);
To generate the format, create a generator, pipe its output somewhere interesting, then write objects to the generator:
const generator = require('json-text-sequence').generator;
const fs = require('fs');
const g = new generator();
g.pipe(fs.createWriteStream('example.log'));
g.write({
d: new Date(),
count: 0
});
FAQs
Parse and generate RS-delimited JSON sequences according to draft-ietf-json-text-sequence
The npm package json-text-sequence receives a total of 51,938 weekly downloads. As such, json-text-sequence popularity was classified as popular.
We found that json-text-sequence demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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