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Agents for Job Execution and Communication Tasks
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>>> config = '''
... controller(names=['core.sample'])
... scheduler(name='core')
... logger(name='default', standard=30)
... '''
>>> from cybertools.agent.main import setup
>>> master = setup(config)
Starting agent application...
Using controllers core.sample.
Crawler
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The agent uses Twisted's cooperative multitasking model.
Crawler is the base class for all derived crawlers like the filesystem crawler
and the mailcrawler. The SampleCrawler returns a deferred that already had a
callback being called, so it will return at once.
Returns a deferred that must be supplied with a callback method (and in
most cases also an errback method).
We create the sample crawler via the master's controller. The sample
controller provides a simple method for this purpose.
>>> controller = master.controllers[0]
>>> controller.createAgent('crawl.sample', 'crawler01')
In the next step we request the start of a job, again via the controller.
>>> controller.enterJob('sample', 'crawler01')
The job is not executed immediately - we have to hand over control to
the twisted reactor first.
>>> from cybertools.agent.tests import tester
>>> tester.iterate()
SampleCrawler is collecting.
Job 00001 completed; result: [];
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