query-logentries

query-logentries

Query logentries.com via their REST API. Returns only the raw log messages you passed to logEntries at the time of logging. Supports both callback and streaming and uses request-retry-stream internally to make requests in order to be more robust in case of network glitches.

Installation

npm install --save query-logentries

Usage

How to initialize and available options:

const queryLogentriesFactory = require('query-logentries');

// Required. Replace with your API KEY
const apiKey = '6971aef7-998f-4cb2-9613-ddb42b9697b8';

// Optional. Defaults to https://rest.logentries.com/query/logs
const queryUrl = 'https://rest.logentries.com/query/logs';

const queryLogentries = queryLogentriesFactory(apiKey, queryUrl);
const opts = {
	// Required. Set it to the id of the log in logEntries you wish
	// to query
	logId: '7d9ff278-3a6d-4c7a-8e65-df89fd3f5a96',

	// Required. Set it to any valid value or stringDate that can
	//be passed to a javascript Date object
	from: '2017-01-01T00:00:00.000',

	// Optional. If empty will default to now. Set it to any valid
	// value or stringDate that can be passed to a javascript Date
	// object
	to: '2017-01-02T23:59:59.999',

	// Optional. Default to 'where()'. The leql query you wish to
	// query with. Please ensure it is a valid leql query or you
	// get statusCode 400 errors from logEntries.
	query: 'where(method=GET)',

	// Optional. Defaults to 50. How many messages should be
	// retrieved per paging request made to logEntries
	perPage: 50,

	// Optional. Defaults to 30000 (30 seconds). How long should
	//the request wait before it times out
	timeout: 30000,

	// Optional. Defaults to 3000 (3 seconds). How long should
	// this module wait when checking if a query response is
	// finished on logEntries
	pollInterval: 3000
};

After initializing, using it with callback:

queryLogentries(opts, (err, messages) => {
	if (err) {
		return; //TODO handle err
	}
	console.log('messages', messages);
});

After initializing, using it with streaming:

const pump = require('pump');
const through2 = require('through2');
const fs = require('fs');

const logEntriesStream = queryLogentries(opts);
const toStringStream = through2.obj(function(message, enc, callback) {
	this.push(JSON.stringify(message) + '\n');
	callback();
});
const toFileStream = fs.createWriteStream('./result.txt');

pump(logEntriesStream, toStringStream, toFileStream, err => {
	if (err) {
		//TODO handle err
	}
});

License

MIT