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"""Tornado handlers for cluster web service.
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Authors:
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* Brian Granger
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"""
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#-----------------------------------------------------------------------------
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# Copyright (C) 2011 The IPython Development Team
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#
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# Distributed under the terms of the BSD License. The full license is in
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# the file COPYING, distributed as part of this software.
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#-----------------------------------------------------------------------------
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#-----------------------------------------------------------------------------
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# Imports
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#-----------------------------------------------------------------------------
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from tornado import web
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from zmq.utils import jsonapi
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from ..base.handlers import IPythonHandler
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#-----------------------------------------------------------------------------
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# Cluster handlers
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#-----------------------------------------------------------------------------
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class MainClusterHandler(IPythonHandler):
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@web.authenticated
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def get(self):
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self.finish(jsonapi.dumps(self.cluster_manager.list_profiles()))
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class ClusterProfileHandler(IPythonHandler):
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@web.authenticated
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def get(self, profile):
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self.finish(jsonapi.dumps(self.cluster_manager.profile_info(profile)))
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class ClusterActionHandler(IPythonHandler):
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@web.authenticated
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def post(self, profile, action):
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cm = self.cluster_manager
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if action == 'start':
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n = self.get_argument('n',default=None)
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if n is None:
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data = cm.start_cluster(profile)
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else:
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data = cm.start_cluster(profile, int(n))
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if action == 'stop':
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data = cm.stop_cluster(profile)
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self.finish(jsonapi.dumps(data))
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#-----------------------------------------------------------------------------
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# URL to handler mappings
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#-----------------------------------------------------------------------------
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_cluster_action_regex = r"(?P<action>start|stop)"
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_profile_regex = r"(?P<profile>[^\/]+)" # there is almost no text that is invalid
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default_handlers = [
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(r"/clusters", MainClusterHandler),
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(r"/clusters/%s/%s" % (_profile_regex, _cluster_action_regex), ClusterActionHandler),
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(r"/clusters/%s" % _profile_regex, ClusterProfileHandler),
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]
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