lambee/actions/fn-logs/aws.js

A tool to help developer work with AWS Lambda.

const AWS = require('aws-sdk')

/**
 * Make the call to AWS CloudWatch to get the logs.
 *
 * @param string fnName The name of the Lambda function.
 * @param number startTime The start of the time range, expressed as the number
 * of milliseconds after Jan 1, 1970 00:00:00 UTC. Events with a timestamp
 * before this time are not returned.
 * @param number endTime The end of the time range, expressed as the number of
 * milliseconds after Jan 1, 1970 00:00:00 UTC. Events with a timestamp later
 * than this time are not returned.
 */
async function getLogs(fnName, startTime, endTime, awsRegion, awsProfile, debug) {

    const cwlogs = new AWS.CloudWatchLogs({
        apiVersion: '2014-03-28',
        region: awsRegion,
        credentials: awsProfile ? new AWS.SharedIniFileCredentials({profile: awsProfile}) : undefined
    })

    debug && console.debug('AWS Config', cwlogs.config)

    const params = {
        logGroupName: `/aws/lambda/${fnName}`,
        startTime,
        endTime
    }
    debug && console.debug('filterLogEvents', params)

    return cwlogs.filterLogEvents(params).promise()

}

module.exports = {
    getLogs
}