42 lines
1.4 KiB
Python
42 lines
1.4 KiB
Python
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from eventlet.zipkin import http
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from eventlet.zipkin import wsgi
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from eventlet.zipkin import greenthread
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from eventlet.zipkin import log
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from eventlet.zipkin import api
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from eventlet.zipkin.client import ZipkinClient
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def enable_trace_patch(host='127.0.0.1', port=9410,
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trace_app_log=False, sampling_rate=1.0):
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""" Apply monkey patch to trace your WSGI application.
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:param host: Scribe daemon IP address (default: '127.0.0.1')
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:param port: Scribe daemon port (default: 9410)
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:param trace_app_log: A Boolean indicating if the tracer will trace
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application log together or not. This facility assume that
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your application uses python standard logging library.
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(default: False)
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:param sampling_rate: A Float value (0.0~1.0) that indicates
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the tracing frequency. If you specify 1.0, all request
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are traced (and sent to Zipkin collecotr).
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If you specify 0.1, only 1/10 requests are traced. (default: 1.0)
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"""
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api.client = ZipkinClient(host, port)
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# monkey patch for adding tracing facility
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wsgi.patch(sampling_rate)
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http.patch()
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greenthread.patch()
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# monkey patch for capturing application log
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if trace_app_log:
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log.patch()
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def disable_trace_patch():
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http.unpatch()
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wsgi.unpatch()
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greenthread.unpatch()
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log.unpatch()
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api.client.close()
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