AWS CloudWatch Custom Metrics

You can send custom metrics to AWS CloudWatch like disk/memory usage

Features

• Send custom metrics to AWS CloudWatch
• Add new metrics what you need by metric plugins
• Configure different cron time for each metric plugin

Requirements

• PHP 5.5+
• aws/aws-sdk-php
• mtdowling/cron-expression

Usage

Basic usage

• Create php file like awscw-agent.php

<?php

use AWSCustomMetric\DI;
use AWSCustomMetric\Logger\DefaultLogger;
use AWSCustomMetric\Sender as CWSender;
use AWSCustomMetric\CommandRunner;

try {
$diObj = new DI();
$diObj->setCommandRunner(new CommandRunner());
//Optional
//$diObj->setLogger(new DefaultLogger());

// Create the Sender
$cwSender = new CWSender("AWS_KEY", "AWS_SECRET", "AWS_REGION", new CommandRunner());
$cwSender->setNamespace('Custom/System');
$cwSender->addPlugin([
    new DiskUsage($diObj),
    new MemoryUsage($diObj)
]);
$cwSender->run();
} catch (\Exception $e) {
    //Error handling
}

// ...

• Add to cron like :

*/10 * * * * /path/to/php /path/to/awscw-agent.php

Auto Discover InstanceId

For AWS EC2 instances, some meta-data can be obtained from system like instance-id :

/usr/bin/wget -q -O - http://169.254.169.254/latest/meta-data/instance-id

While creating Sender object, if you dont give instance-id param, class tries to find instance-id using above cmd.

Cron for Metric Plugins

Each metric plugin can be configured to run at specified time. Time can be defined at crontab format. For more info: https://github.com/mtdowling/cron-expression

<?php

use AWSCustomMetric\DI;
use AWSCustomMetric\Logger\DefaultLogger;
use AWSCustomMetric\Sender as CWSender;
use AWSCustomMetric\CommandRunner;

try {
$diObj = new DI();
$diObj->setCommandRunner(new CommandRunner());
//Optional
//$diObj->setLogger(new DefaultLogger());

//metric will be sent at every sender->run calls
$diskPlugin = new DiskUsage($diObj, 'Appname/System', '* * * * *');

//metric will be sent at every hour
$memoryPlugin = new MemoryUsage($diObj, 'Appname/System', '0 * * * *');

// Create the Sender
$cwSender = new CWSender("AWS_KEY", "AWS_SECRET", "AWS_REGION", new CommandRunner());
$cwSender->setNamespace('Custom/System');
$cwSender->addPlugin([$diskPlugin, $memoryPlugin]);
$cwSender->run();
} catch (\Exception $e) {
    //Error handling
}

// ...

Installation

You can use Composer to install :

composer require fustundag/awscw-custom-metrics

TODO

• NOT TESTED. 86% Coverage 100% Coverage
• MORE PLUGINS.

Contributing

You can contribute by forking the repo and creating pull requests. You can also create issues or feature requests.

Disclaimer

Your AWS CloudWatch usage my be charged. Please check CloudWatch pricing page : https://aws.amazon.com/cloudwatch/pricing/

License

This project is licensed under the MIT license. LICENSE file can be found in this repository.