Query logentries.com via their REST API
npm install 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.
npm install --save query-logentries
How to initialize and available options:
``javascript
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:
`javascript`
queryLogentries(opts, (err, messages) => {
if (err) {
return; //TODO handle err
}
console.log('messages', messages);
});
After initializing, using it with streaming:
`javascript
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
}
});
``