mirror of https://github.com/scrapy/scrapy.git
60 lines
2.0 KiB
Python
60 lines
2.0 KiB
Python
"""Some debugging functions for working with the Scrapy engine"""
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from time import time # used in global tests code
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def get_engine_status(engine):
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"""Return a report of the current engine status"""
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global_tests = [
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"time()-engine.start_time",
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"engine.has_capacity()",
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"engine.downloader.is_idle()",
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"len(engine.downloader.slots)",
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"len(engine.downloader.active)",
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"engine.scraper.is_idle()",
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"len(engine.scraper.slots)",
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]
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spider_tests = [
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"engine.spider_is_idle(spider)",
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"engine.slots[spider].closing",
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"len(engine.slots[spider].inprogress)",
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"len(engine.slots[spider].scheduler.dqs or [])",
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"len(engine.slots[spider].scheduler.mqs)",
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"len(engine.scraper.slots[spider].queue)",
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"len(engine.scraper.slots[spider].active)",
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"engine.scraper.slots[spider].active_size",
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"engine.scraper.slots[spider].itemproc_size",
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"engine.scraper.slots[spider].needs_backout()",
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]
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status = {'global': [], 'spiders': {}}
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for test in global_tests:
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try:
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status['global'] += [(test, eval(test))]
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except Exception, e:
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status['global'] += [(test, "%s (exception)" % type(e).__name__)]
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for spider in engine.slots.keys():
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x = []
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for test in spider_tests:
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try:
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x += [(test, eval(test))]
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except Exception, e:
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x += [(test, "%s (exception)" % type(e).__name__)]
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status['spiders'][spider] = x
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return status
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def format_engine_status(engine=None):
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status = get_engine_status(engine)
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s = "Execution engine status\n\n"
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for test, result in status['global']:
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s += "%-47s : %s\n" % (test, result)
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s += "\n"
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for spider, tests in status['spiders'].items():
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s += "Spider: %s\n" % spider
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for test, result in tests:
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s += " %-50s : %s\n" % (test, result)
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return s
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def print_engine_status(engine):
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print format_engine_status(engine)
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