56 lines
1.9 KiB
Python
56 lines
1.9 KiB
Python
import logging
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from util.cloudwatch import get_queue
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logger = logging.getLogger(__name__)
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class NullReporter(object):
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def report(self, *args):
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pass
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class CloudWatchReporter(object):
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""" CloudWatchReporter reports work queue metrics to CloudWatch """
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def __init__(self, request_queue, namespace, need_capacity_name, build_percent_name):
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self._namespace = namespace
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self._need_capacity_name = need_capacity_name
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self._build_percent_name = build_percent_name
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self._put_metrics_queue = request_queue
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def _send_to_queue(self, *args, **kwargs):
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self._put_metrics_queue.put((args, kwargs))
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def report(self, currently_processing, running_count, total_count):
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logger.debug('Worker indicated %s running count and %s total count', running_count,
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total_count)
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need_capacity_count = total_count - running_count
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self._send_to_queue(self._namespace, self._need_capacity_name, need_capacity_count,
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unit='Count')
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building_percent = 100 if currently_processing else 0
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self._send_to_queue(self._namespace, self._build_percent_name, building_percent,
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unit='Percent')
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class QueueMetrics(object):
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"""
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QueueMetrics initializes a reporter for recording metrics of work queues.
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"""
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def __init__(self, app=None):
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self._app = app
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self._reporter = NullReporter()
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if app is not None:
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reporter_type = app.config.get('QUEUE_METRICS_TYPE', 'Null')
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if reporter_type == 'CloudWatch':
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namespace = app.config['QUEUE_METRICS_NAMESPACE']
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req_capacity_name = app.config['QUEUE_METRICS_CAPACITY_SHORTAGE_NAME']
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build_percent_name = app.config['QUEUE_METRICS_BUILD_PERCENT_NAME']
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request_queue = get_queue(app)
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self._reporter = CloudWatchReporter(request_queue, namespace, req_capacity_name,
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build_percent_name)
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def __getattr__(self, name):
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return getattr(self._reporter, name, None)
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