khronos
Simple HTTP-based Job scheduling for the cloud.
Features
- Schedule of HTTP Requests
- Configure recurrency per request
- Log HTTP status code for every request made
- Query the database via REST API
- Postgresql, MySQL and SQLite supported. (mongodb will be supported soon)
How it works
Khronos use a rack app to schedule and query for scheduled tasks, and a worker process to execute them in the background.
At 'examples' directory you find two rackup files for these processes.
How to use
Create a scheduled task:
RestClient.post('http://localhost:3000/task', {
:context => 'test',
:at => 24.hours.from_now,
:task_url => "http://myapp.com/do-something-awesome",
:recurrency => 12.hours
})
# => "{\"active\":true,\"at\":\"2012-09-15T21:24:56-03:00\",\"context\":\"test\",\"id\":1,\"recurrency\":1,\"task_url\":\"http://myapp.com/do-something-awesome\"}"
Query for a scheduled task:
RestClient.get('http://localhost:3000/task', :params => { :context => 'test' })
# => "{\"active\":true,\"at\":\"2012-09-15T21:24:56-03:00\",\"context\":\"test\",\"id\":1,\"recurrency\":1,\"task_url\":\"http://myapp.com/do-something-awesome\"}"
Query for logs for tasks that already ran.
RestClient.get('http://localhost:3000/schedule/logs', :params => { :status_code => 500 })
# => "[{\"id\":3,\"schedule_id\":1,\"started_at\":\"2012-09-15T13:38:48-03:00\",\"status_code\":500},{\"id\":5,\"schedule_id\":2,\"started_at\":\"2012-09-15T13:38:48-03:00\",\"status_code\":500}]"
Note: these examples are using rest-client and activesupport.
Contributing
Feel free to fork and send pull requests with features and/or bug fixes.
License
Khronos is released under the MIT license. Please read the LICENSE file.