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logs.js
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logs.js
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var Table = require('cli-table');
var moment = require('moment');
var hi = require('human-interval');
var filesize = require('filesize');
var colors = require('colors');
var async = require('async');
var getGroups = function(cwlogs, showStreams) {
cwlogs.describeLogGroups({}, function(err, data) {
if (err) throw err; // an error occurred
if(showStreams) {
var groups = [];
data.logGroups.forEach(function(group) {
groups.push(group.logGroupName);
});
return getStreams(cwlogs, groups);
}
var table = new Table({
head: ['Name', 'Created', 'Size']
});
data.logGroups.forEach(function(group) {
var name = group.logGroupName;
var created = moment(group.creationTime);
var size = filesize(group.storedBytes);
table.push([name, created.format('YYYY-MM-DD HH:MM:SS'), size]);
});
console.log(table.toString());
});
}
var getStreams = function(cwlogs, groups) {
if(!Array.isArray(groups)) {
groups = [groups];
}
var table = new Table({
head: ['No', 'Group Name', 'Name', 'Created', 'Size']
});
var count = 1;
async.eachSeries(groups, function(group, next) {
cwlogs.describeLogStreams({logGroupName: group}, function(err, data) {
if(err) {
return next(err);
}
data.logStreams.forEach(function(stream) {
var name = stream.logStreamName;
var created = moment(stream.creationTime);
var size = filesize(stream.storedBytes);
table.push([count, group, name, created.format('YYYY-MM-DD HH:MM:SS'), size]);
count = count + 1;
});
next();
});
}, function(err) {
if(err) throw err;
console.log( table.toString() );
});
}
var getLogs = function(cwlogs, groupName, argv, nextToken, runningCount) {
if(argv.limit === 0 ) {
console.log('Limit reached');
return console.log('Retrieved ' + runningCount + ' log entries');
}
var params = {
logGroupName: groupName,
interleaved: true
};
if(argv.limit != '*') {
var limit = parseInt(argv.limit);
if(limit <= 10000 && nextToken !== null) {
argv.limit = 0;
}
if(limit > 10000) {
argv.limit = (limit - 10000);
limit = 10000;
}
params.limit = limit;
}
var dateFormat = argv.format;
if(argv.since) {
var sinceTime = moment(argv.since, dateFormat).valueOf();
if(sinceTime > 0) {
params.startTime = sinceTime;
} else {
console.log('WARNING: Error parsing --since "' + argv.since + '" against format ' + dateFormat);
}
}
if(argv.until) {
var endTime = moment(argv.until, dateFormat).valueOf();
if(endTime > 0) {
params.endTime = end;
} else {
console.log('WARNING: Error parsing --until "' + argv.until + '" against format ' + dateFormat);
}
}
if(argv.past) {
var now = moment().valueOf();
try {
var offset = hi(argv.past);
} catch (e){
offset = false;
console.log("WARNING:".yellow + " " + "Error parsing --past " + " " + argv.past.red);
}
if(offset) {
params.endTime = now;
params.startTime = now - offset;
}
}
if(argv.filterStatus) {
params.filterPattern = '[..., status='+argv.filterStatus+', size, referrer, agent]';
}
if(nextToken) {
params.nextToken = nextToken;
}
if(!runningCount) {
runningCount = 0;
}
cwlogs.filterLogEvents(params, function(err, data) {
if(err) throw err;
data.events.forEach(function(event) {
console.log(event.message);
});
runningCount = runningCount + data.events.length;
if(data.nextToken) {
return getLogs(cwlogs, groupName, argv, data.nextToken, runningCount);
}
console.log('');
console.log('Retrieved ' + runningCount + ' log entries');
});
}
// Sort of the 'controller' isn't it.
module.exports = function(aws, region, argv) {
var cwlogs = new aws.CloudWatchLogs({ region: region });
if(argv.streams && argv.groupName) {
return getStreams(cwlogs, [argv.groupName]);
}
if(argv.groupName) {
return getLogs(cwlogs, argv.groupName, argv);
}
getGroups(cwlogs, argv.streams);
}