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"""Tool to generate mod_status-like output. |
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Usage: |
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import status |
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cherrypy.tools.status = status.StatusMonitor() |
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cherrypy.config.update({"tools.status.on": True}) |
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cherrypy.tree.mount(status.Root(), '/cpstatus') |
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""" |
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import threading |
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import time |
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import cherrypy |
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class ThreadStatus(object): |
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start = None |
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end = None |
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url = None |
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def last_req_time(self): |
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if self.end is None: |
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return 0 |
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return self.end - self.start |
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def idle_time(self): |
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if self.end is None: |
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return 0 |
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return time.time() - self.end |
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class StatusMonitor(cherrypy.Tool): |
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"""Register the status of each thread.""" |
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def __init__(self): |
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self._point = 'on_start_resource' |
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self._name = 'status' |
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self._priority = 50 |
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self.seen_threads = {} |
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def callable(self): |
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threadID = threading._get_ident() |
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ts = self.seen_threads.setdefault(threadID, ThreadStatus()) |
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ts.start = cherrypy.response.time |
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ts.url = cherrypy.url() |
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ts.end = None |
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def unregister(self): |
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"""Unregister the current thread.""" |
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threadID = threading._get_ident() |
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if threadID in self.seen_threads: |
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self.seen_threads[threadID].end = time.time() |
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def _setup(self): |
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cherrypy.Tool._setup(self) |
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cherrypy.request.hooks.attach('on_end_resource', self.unregister) |
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class Root(object): |
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def index(self): |
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threadstats = ["<tr><th>%s</th><td>%.4f</td><td>%.4f</td><td>%s</td></tr>" |
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% (id, ts.idle_time(), ts.last_req_time(), ts.url) |
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for id, ts in cherrypy.tools.status.seen_threads.items()] |
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return """ |
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<html> |
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<head> |
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<title>CherryPy Status</title> |
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</head> |
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<body> |
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<h1>CherryPy Status</h1> |
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<table> |
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<tr><th>Thread ID</th><th>Idle Time</th><th>Last Request Time</th><th>URL</th></tr> |
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%s |
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</table> |
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</body> |
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</html> |
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""" % '\n'.join(threadstats) |
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index.exposed = True |
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def delay(self, secs): |
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time.sleep(float(secs)) |
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return "OK" |
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delay.exposed = True |
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