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from provisioningserver.enum import PSERV_FAULT
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# Presentation templates for various provisioning faults.
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PSERV_FAULT.NO_COBBLER: """
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The provisioning server was unable to reach the Cobbler service:
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Check pserv.log, and restart MaaS if needed.
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PSERV_FAULT.COBBLER_AUTH_FAILED: """
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The provisioning server failed to authenticate with the Cobbler
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service: %(fault_string)s.
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This may mean that Cobbler's authentication configuration has
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changed. Check /var/log/cobbler/ and pserv.log.
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PSERV_FAULT.COBBLER_AUTH_ERROR: """
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The Cobbler server no longer accepts the provisioning server's
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authentication token. This should not happen; it may indicate
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that the server is under unsustainable load.
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PSERV_FAULT.NO_SUCH_PROFILE: """
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System profile does not exist: %(fault_string)s.
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Has the maas-import-isos script been run? This will run
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automatically from time to time, but if it is failing, an
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administrator may need to run it manually.
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PSERV_FAULT.GENERIC_COBBLER_ERROR: """
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The provisioning service encountered a problem with the Cobbler
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server, fault code %(fault_code)s: %(fault_string)s
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If the error message is not clear, you may need to check the
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Cobbler logs in /var/log/cobbler/ or pserv.log.
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Unable to reach provisioning server (%(fault_string)s).
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Check pserv.log and your PSERV_URL setting, and restart MaaS if
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def present_user_friendly_fault(fault):
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"""Return a more user-friendly exception to represent `fault`.
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:param fault: An exception raised by, or received across, xmlrpc.
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:type fault: :class:`xmlrpclib.Fault`
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:return: A more user-friendly exception, if one can be produced.
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Otherwise, this returns None and the original exception should be
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re-raised. (This is left to the caller in order to minimize
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erosion of the backtrace).
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:rtype: :class:`MAASAPIException`, or None.
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'fault_code': fault.faultCode,
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'fault_string': fault.faultString,
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user_friendly_text = PRESENTATIONS.get(fault.faultCode)
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if user_friendly_text is None:
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return MAASAPIException(dedent(
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user_friendly_text.lstrip('\n') % params))
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class ProvisioningCaller:
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"""Wrapper for an XMLRPC call.
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Runs xmlrpc exceptions through `present_user_friendly_fault` for better
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presentation to the user.
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def __init__(self, method):
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def __call__(self, *args, **kwargs):
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return self.method(*args, **kwargs)
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except xmlrpclib.Fault as e:
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friendly_fault = present_user_friendly_fault(e)
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if friendly_fault is None:
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class ProvisioningProxy:
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"""Proxy for calling the provisioning service.
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This wraps an XMLRPC :class:`ServerProxy`, but translates exceptions
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coming in from, or across, the xmlrpc mechanism into more helpful ones
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def __init__(self, xmlrpc_proxy):
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self.proxy = xmlrpc_proxy
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def patch(self, method, replacement):
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setattr(self.proxy, method, replacement)
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def __getattr__(self, attribute_name):
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"""Return a wrapped version of the requested method."""
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attribute = getattr(self.proxy, attribute_name)
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if getattr(attribute, '__call__', None) is None:
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# This is a regular attribute. Return it as-is.
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# This attribute is callable. Wrap it in a caller.
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return ProvisioningCaller(attribute)
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def get_provisioning_api_proxy():
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"""Return a proxy to the Provisioning API.
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"USE_REAL_PSERV to False, on an installed MAAS. "
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"Don't do either.")
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return get_fake_provisioning_api_proxy()
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xmlrpc_proxy = get_fake_provisioning_api_proxy()
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return ProvisioningProxy(xmlrpc_proxy)
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def get_metadata_server_url():
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"""Return the URL where nodes can reach the metadata service."""
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return urljoin(Config.objects.get_config('maas_url'), "metadata/")
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maas_url = Config.objects.get_config('maas_url')
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if settings.FORCE_SCRIPT_NAME is None:
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path = "%s/metadata/" % settings.FORCE_SCRIPT_NAME
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return urljoin(maas_url, path)
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def compose_metadata(node):
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profile = select_profile_for_node(instance, papi)
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power_type = instance.get_effective_power_type()
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metadata = compose_metadata(instance)
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papi.add_node(instance.system_id, profile, power_type, metadata)
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except xmlrpclib.Fault as e:
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if e.faultCode == PSERV_FAULT.NO_SUCH_PROFILE:
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raise MissingProfileException(dedent("""
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System profile %s does not exist. Has the maas-import-isos
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script been run? This will run automatically from time to
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time, but if it is failing, an administrator may need to run
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""" % profile).lstrip('\n'))
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papi.add_node(instance.system_id, profile, power_type, metadata)
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def set_node_mac_addresses(node):
added
removed
src/maasserver/provisioning.py
