Cronitor PHP Library

Cronitor provides end-to-end monitoring for background jobs, websites, APIs, and anything else that can send or receive an HTTP request. This library provides convenient access to the Cronitor API from applications written in PHP. See our API docs for detailed references on configuring monitors and sending telemetry pings.

In this guide:

• Installation
• Monitoring Background Jobs
• Sending Telemetry Events
• Configuring Monitors
• Package Configuration & Env Vars

Installation

composer require cronitor/cronitor-php

To use manually, you can include the init.php file from source.

require_once('/path/to/cronitor-php/init.php');

Monitoring Background Jobs

The $cronitor->job function will send telemetry events before calling your function and after it exits. If your function raises an exception a fail event will be sent (and the exception re-raised).

$cronitor = new Cronitor\Client('api_key_123');

$closureVar = time();
$cronitor->job('weekly-report-job', function() use ($closureVar){
  new WeeklyReportJob($closureVar)->run();
});

Sending Telemetry Events

If you want to send a heartbeat events, or want finer control over when/how telemetry events are sent for your jobs, you can create a Monitor instance and call the .ping method.

$cronitor = new Cronitor\Client('api_key_123');

$monitor = $cronitor->monitor('heartbeat-monitor');

$monitor->ping(); # a basic heartbeat event

# optional params can be passed as kwargs
# complete list - https://cronitor.io/docs/telemetry-api#parameters

$monitor->ping(['state' => 'run']); # a job/process has started

# a job/process has completed (include metrics for Cronitor to record)
$monitor->ping(['state' => 'complete', 'metrics' => ['count' => 1000, 'error_count' => 17]]);

Configuring Monitors

You can configure all of your monitors using a single YAML file. This can be version controlled and synced to Cronitor as part of a deployment or build process. For details on all of the attributes that can be set, see the Monitor API documentation.

# read config file and set credentials (if included).
$cronitor->readConfig('./cronitor.yaml');

# sync config file's monitors to Cronitor.
$cronitor->applyConfig();

# send config file's monitors to Cronitor to validate correctness.
# monitors will not be saved.
$cronitor->validateConfig();

# save config to local YAML file (defaults to cronitor.yaml)
$cronitor->generateConfig();

The cronitor.yaml file includes three top level keys jobs, checks, heartbeats. You can configure monitors under each key by declaring a monitor key and defining Monitor attributes

jobs:
  nightly-database-backup:
    schedule: 0 0 * * *
    notify:
      - devops-alert-pagerduty
    assertions:
      - metric.duration < 5 minutes

  send-welcome-email:
    schedule: every 10 minutes
    assertions:
      - metric.count > 0
      - metric.duration < 30 seconds

checks:
  cronitor-homepage:
    request:
      url: https://cronitor.io
      regions:
        - us-east-1
        - eu-central-1
        - ap-northeast-1
    assertions:
      - response.code = 200
      - response.time < 2s

  cronitor-telemetry-api:
    request:
      url: https://cronitor.link/ping
    assertions:
      - response.body contains ok
      - response.time < .25s

heartbeats:
  production-deploy:
    notify:
      alerts: ["deploys-slack"]
      events: true # send alert when the event occurs

You can also create and update monitors by calling $cronitor->monitors->put. For details on all of the attributes that can be set see the Monitor API [documentation)(https://cronitor.io/docs/monitor-api#attributes).

$cronitor->monitors->put([
  [
    'type' => 'job',
    'key' => 'send-customer-invoices',
    'schedule' => '0 0 * * *',
    'assertions' => [
        'metric.duration < 5 min'
    ],
    'notify' => ['devops-alerts-slack']
  ],
  [
    'type' => 'check',
    'key' => 'Cronitor Homepage',
    'schedule' => 'every 45 seconds',
    'request' => [
        'url' => 'https://cronitor.io'
    ]
    'assertions' => [
        'response.code = 200',
        'response.time < 1.5s',
        'response.json "open_orders" < 2000'
    ]
  ]
])

Pause, Reset, Delete

require 'cronitor'

$monitor = $cronitor->monitor('heartbeat-monitor');

$monitor->pause(24) # pause alerting for 24 hours
$monitor->unpause() # alias for ->pause(0)
$monitor->ok() # manually reset to a passing state alias for $monitor->ping({state: ok})
$monitor->delete() # destroy the monitor

Package Configuration

The package needs to be configured with your account's API key, which is available on the account settings page. You can also optionally specify an api_version and an environment. If not provided, your account default is used. These can also be supplied using the environment variables CRONITOR_API_KEY, CRONITOR_API_VERSION, CRONITOR_ENVIRONMENT.

$apiKey = 'apiKey123';
$apiVersion = '2020-10-01';
$environment = 'staging';
$cronitor = new Cronitor\Client($apiKey, $apiVersion, $environment);

Contributing

Pull requests and features are happily considered! By participating in this project you agree to abide by the Code of Conduct.

To contribute

Fork, then clone the repo:

git clone [email protected]:your-username/cronitor-php.git

Push to your fork and submit a pull request