root / qa / rapi-workload.py @ 396c5dfb
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#!/usr/bin/python -u
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#
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# Copyright (C) 2013 Google Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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"""Script for providing a large amount of RAPI calls to Ganeti.
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"""
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# pylint: disable=C0103
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# due to invalid name
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import inspect |
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import sys |
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import types |
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import ganeti.constants as constants |
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from ganeti.rapi.client import GanetiApiError |
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import qa_config |
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import qa_node |
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import qa_rapi |
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# The purpose of this file is to provide a stable and extensive RAPI workload
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# that manipulates the cluster only using RAPI commands, with the assumption
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# that an empty cluster was set up beforehand. All the nodes that can be added
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# to the cluster should be a part of it, and no instances should be present.
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#
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# Its intended use is in RAPI compatibility tests, where different versions with
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# possibly vastly different QAs must be compared. Running the QA on both
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# versions of the cluster will produce RAPI calls, but there is no guarantee
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# that they will match, or that functions invoked in between will not change the
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# results.
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#
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# By using only RAPI functions, we are sure to be able to capture and log all
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# the changes in cluster state, and be able to compare them afterwards.
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#
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# The functionality of the QA is still used to generate a functioning,
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# RAPI-enabled cluster, and to set up a C{GanetiRapiClient} capable of issuing
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# commands to the cluster.
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#
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# Due to the fact that not all calls issued as a part of the workload might be
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# implemented in the different versions of Ganeti, the client does not halt or
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# produce a non-zero exit code upon encountering a RAPI error. Instead, it
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# reports it and moves on. Any utility comparing the requests should account for
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# this.
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def MockMethod(*_args, **_kwargs): |
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""" Absorbs all arguments, does nothing, returns None.
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"""
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return None |
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RAPI_USERNAME = "ganeti-qa"
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class GanetiRapiClientWrapper(object): |
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""" Creates and initializes a GanetiRapiClient, and acts as a wrapper invoking
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only the methods that the version of the client actually uses.
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"""
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def __init__(self): |
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self._client = qa_rapi.Setup(RAPI_USERNAME,
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qa_rapi.LookupRapiSecret(RAPI_USERNAME)) |
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self._method_invocations = {}
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def _RecordMethodInvocation(self, name, arg_dict): |
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""" Records the invocation of a C{GanetiRAPIClient} method, noting the
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argument and the method names.
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"""
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if name not in self._method_invocations: |
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self._method_invocations[name] = set() |
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for named_arg in arg_dict: |
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self._method_invocations[name].add(named_arg)
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def _InvokerCreator(self, fn, name): |
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""" Returns an invoker function that will invoke the given function
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with any arguments passed to the invoker at a later time, while
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catching any specific non-fatal errors we would like to know more
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about.
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@type fn arbitrary function
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@param fn The function to invoke later.
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@type name string
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@param name The name of the function, for debugging purposes.
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@rtype function
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"""
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def decoratedFn(*args, **kwargs): |
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result = None
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try:
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print "Using method %s" % name |
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self._RecordMethodInvocation(name, kwargs)
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result = fn(*args, **kwargs) |
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except GanetiApiError as e: |
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print "RAPI error while performing function %s : %s" % \ |
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(name, str(e))
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return result
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return decoratedFn
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def __getattr__(self, attr): |
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""" Fetches an attribute from the underlying client if necessary.
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"""
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# Assuming that this method exposes no public methods of its own,
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# and that any private methods are named according to the style
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# guide, this will stop infinite loops in attribute fetches.
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if attr.startswith("_"): |
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return self.__getattribute__(attr) |
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# We also want to expose non-methods
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if hasattr(self._client, attr) and \ |
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not isinstance(getattr(self._client, attr), types.MethodType): |
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return getattr(self._client, attr) |
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try:
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return self._InvokerCreator(self._client.__getattribute__(attr), attr) |
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except AttributeError: |
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print "Missing method %s; supplying mock method" % attr |
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return MockMethod
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def _OutputMethodInvocationDetails(self): |
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""" Attempts to output as much information as possible about the methods
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that have and have not been invoked, including which arguments have not
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been used.
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"""
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print "\nMethod usage:\n" |
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for method in [n for n in dir(self._client) |
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if not n.startswith('_') and |
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isinstance(self.__getattr__(n), types.FunctionType)]: |
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if method not in self._method_invocations: |
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print "Method unused: %s" % method |
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else:
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arg_spec, _, _, default_arg_spec = \ |
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inspect.getargspec(getattr(self._client, method)) |
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default_args = [] |
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if default_arg_spec is not None: |
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default_args = arg_spec[-len(default_arg_spec):]
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used_arg_set = self._method_invocations[method]
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unused_args = [arg for arg in default_args if arg not in used_arg_set] |
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if unused_args:
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print "Method %s used, but arguments unused: %s" % \ |
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(method, ", ".join(unused_args))
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def Finish(client, fn, *args, **kwargs): |
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""" When invoked with a job-starting RAPI client method, it passes along any
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additional arguments and waits until its completion.
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@type client C{GanetiRapiClientWrapper}
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@param client The client wrapper.
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@type fn function
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@param fn A client method returning a job id.
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"""
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possible_job_id = fn(*args, **kwargs) |
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try:
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# The job ids are returned as both ints and ints represented by strings.
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# This is a pythonic check to see if the content is an int.
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int(possible_job_id)
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except (ValueError, TypeError): |
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# As a rule of thumb, failures will return None, and other methods are
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# expected to return at least something
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if possible_job_id is not None: |
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print ("Finish called with a method not producing a job id, " |
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"returning %s" % possible_job_id)
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return possible_job_id
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success = client.WaitForJobCompletion(possible_job_id) |
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result = client.GetJobStatus(possible_job_id)["opresult"][0] |
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if success:
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return result
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else:
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print "Error encountered while performing operation: " |
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print result
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return None |
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def TestTags(client, get_fn, add_fn, delete_fn, *args): |
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""" Tests whether tagging works.
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@type client C{GanetiRapiClientWrapper}
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@param client The client wrapper.
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@type get_fn function
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@param get_fn A Get*Tags function of the client.
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@type add_fn function
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@param add_fn An Add*Tags function of the client.
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@type delete_fn function
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@param delete_fn A Delete*Tags function of the client.
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To allow this method to work for all tagging functions of the client, use
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named methods.
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"""
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get_fn(*args) |
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tags = ["tag1", "tag2", "tag3"] |
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Finish(client, add_fn, *args, tags=tags, dry_run=True)
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Finish(client, add_fn, *args, tags=tags) |
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get_fn(*args) |
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Finish(client, delete_fn, *args, tags=tags[:1], dry_run=True) |
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Finish(client, delete_fn, *args, tags=tags[:1])
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get_fn(*args) |
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Finish(client, delete_fn, *args, tags=tags[1:])
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get_fn(*args) |
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def TestGetters(client): |
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""" Tests the various get functions which only retrieve information about the
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cluster.
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@type client C{GanetiRapiClientWrapper}
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"""
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client.GetVersion() |
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client.GetFeatures() |
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client.GetOperatingSystems() |
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client.GetInfo() |
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client.GetClusterTags() |
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client.GetInstances() |
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client.GetInstances(bulk=True)
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client.GetJobs() |
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client.GetJobs(bulk=True)
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client.GetNodes() |
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client.GetNodes(bulk=True)
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client.GetNetworks() |
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client.GetNetworks(bulk=True)
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client.GetGroups() |
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client.GetGroups(bulk=True)
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def TestQueries(client, resource_name): |
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""" Finds out which fields are present for a given resource type, and attempts
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to retrieve their values for all present resources.
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@type client C{GanetiRapiClientWrapper}
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@param client A wrapped RAPI client.
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@type resource_name string
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@param resource_name The name of the resource to use.
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"""
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FIELDS_KEY = "fields"
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query_res = client.QueryFields(resource_name) |
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if query_res is None or FIELDS_KEY not in query_res or \ |
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len(query_res[FIELDS_KEY]) == 0: |
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return
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field_entries = query_res[FIELDS_KEY] |
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fields = map(lambda e: e["name"], field_entries) |
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client.Query(resource_name, fields) |
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def TestQueryFiltering(client, master_name): |
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""" Performs queries by playing around with the only guaranteed resource, the
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master node.
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@type client C{GanetiRapiClientWrapper}
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@param client A wrapped RAPI client.
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@type master_name string
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@param master_name The hostname of the master node.
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"""
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client.Query("node", ["name"], |
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["|",
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["=", "name", master_name], |
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[">", "dtotal", 0], |
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]) |
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client.Query("instance", ["name"], |
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["|",
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["=", "name", "NonexistentInstance"], |
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[">", "oper_ram", 0], |
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]) |
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def RemoveAllInstances(client): |
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""" Queries for a list of instances, then removes them all.
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@type client C{GanetiRapiClientWrapper}
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@param client A wrapped RAPI client.
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"""
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instances = client.GetInstances() |
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for inst in instances: |
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Finish(client, client.DeleteInstance, inst) |
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instances = client.GetInstances() |
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assert len(instances) == 0 |
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def TestSingleInstance(client, instance_name, alternate_name, node_one, |
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node_two): |
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""" Creates an instance, performs operations involving it, and then deletes
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it.
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@type client C{GanetiRapiClientWrapper}
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@param client A wrapped RAPI client.
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@type instance_name string
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@param instance_name The hostname to use.
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@type instance_name string
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@param instance_name Another valid hostname to use.
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@type node_one string
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@param node_one A node on which an instance can be added.
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@type node_two string
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@param node_two A node on which an instance can be added.
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"""
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# Check that a dry run works, use string with size and unit
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Finish(client, client.CreateInstance, |
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"create", instance_name, "plain", [{"size":"1gb"}], [], dry_run=True, |
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os="debian-image", pnode=node_one)
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# Another dry run, numeric size, should work, but still a dry run
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Finish(client, client.CreateInstance, |
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"create", instance_name, "plain", [{"size": "1000"}], [{}], |
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dry_run=True, os="debian-image", pnode=node_one) |
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# Create a smaller instance, and delete it immediately
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Finish(client, client.CreateInstance, |
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"create", instance_name, "plain", [{"size":800}], [{}], |
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os="debian-image", pnode=node_one)
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Finish(client, client.DeleteInstance, instance_name) |
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# Create one instance to use in further tests
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Finish(client, client.CreateInstance, |
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"create", instance_name, "plain", [{"size":1200}], [{}], |
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os="debian-image", pnode=node_one)
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client.GetInstance(instance_name) |
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Finish(client, client.GetInstanceInfo, instance_name) |
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Finish(client, client.GetInstanceInfo, instance_name, static=True)
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TestQueries(client, "instance")
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TestTags(client, client.GetInstanceTags, client.AddInstanceTags, |
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client.DeleteInstanceTags, instance_name) |
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Finish(client, client.GrowInstanceDisk, |
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instance_name, 0, 100, wait_for_sync=True) |
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Finish(client, client.RebootInstance, |
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instance_name, "soft", ignore_secondaries=True, dry_run=True, |
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reason="Hulk smash gently!")
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Finish(client, client.ShutdownInstance, |
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instance_name, dry_run=True, no_remember=False, |
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reason="Hulk smash hard!")
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Finish(client, client.StartupInstance, |
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instance_name, dry_run=True, no_remember=False, |
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reason="Not hard enough!")
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Finish(client, client.RebootInstance, |
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instance_name, "soft", ignore_secondaries=True, dry_run=False) |
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Finish(client, client.ShutdownInstance, |
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instance_name, dry_run=False, no_remember=False) |
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Finish(client, client.ModifyInstance, |
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instance_name, disk_template="drbd", remote_node=node_two)
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Finish(client, client.ModifyInstance, |
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instance_name, disk_template="plain")
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Finish(client, client.RenameInstance, |
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instance_name, alternate_name, ip_check=True, name_check=True) |
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Finish(client, client.RenameInstance, alternate_name, instance_name) |
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Finish(client, client.DeactivateInstanceDisks, instance_name) |
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Finish(client, client.ActivateInstanceDisks, instance_name) |
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# Note that the RecreateInstanceDisks command will always fail, as there is
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# no way to induce the necessary prerequisites (removal of LV) via RAPI.
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# Keeping it around allows us to at least know that it still exists.
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Finish(client, client.RecreateInstanceDisks, |
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instance_name, [0], [node_one])
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Finish(client, client.StartupInstance, |
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instance_name, dry_run=False, no_remember=False) |
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client.GetInstanceConsole(instance_name) |
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Finish(client, client.ReinstallInstance, |
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instance_name, os=None, no_startup=False, osparams={}) |
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Finish(client, client.DeleteInstance, instance_name, dry_run=True)
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Finish(client, client.DeleteInstance, instance_name) |
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def MarkUnmarkNode(client, node, state): |
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""" Given a certain node state, marks a node as being in that state, and then
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unmarks it.
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@type client C{GanetiRapiClientWrapper}
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@param client A wrapped RAPI client.
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@type node string
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@type state string
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"""
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# pylint: disable=W0142
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Finish(client, client.ModifyNode, node, **{state: True})
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Finish(client, client.ModifyNode, node, **{state: False})
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# pylint: enable=W0142
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def TestNodeOperations(client, non_master_node): |
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""" Tests various operations related to nodes only
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@type client C{GanetiRapiClientWrapper}
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@param client A wrapped RAPI client.
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@type non_master_node string
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@param non_master_node The name of a non-master node in the cluster.
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"""
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client.GetNode(non_master_node) |
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old_role = client.GetNodeRole(non_master_node) |
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# Should fail
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Finish(client, client.SetNodeRole, |
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non_master_node, "master", False, auto_promote=True) |
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Finish(client, client.SetNodeRole, |
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non_master_node, "regular", False, auto_promote=True) |
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Finish(client, client.SetNodeRole, |
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non_master_node, "master-candidate", False, auto_promote=True) |
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Finish(client, client.SetNodeRole, |
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non_master_node, "drained", False, auto_promote=True) |
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Finish(client, client.SetNodeRole, |
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non_master_node, old_role, False, auto_promote=True) |
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Finish(client, client.PowercycleNode, |
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non_master_node, force=False)
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storage_units_fields = [ |
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"name", "allocatable", "free", "node", "size", "type", "used", |
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] |
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for storage_type in constants.STS_REPORT: |
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storage_units = Finish(client, client.GetNodeStorageUnits, |
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non_master_node, storage_type, |
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",".join(storage_units_fields))
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if len(storage_units) > 0 and len(storage_units[0]) > 0: |
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# Name is the first entry of the first result, allocatable the other
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unit_name = storage_units[0][0] |
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Finish(client, client.ModifyNodeStorageUnits, |
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non_master_node, storage_type, unit_name, |
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allocatable=not storage_units[0][1]) |
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Finish(client, client.ModifyNodeStorageUnits, |
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non_master_node, storage_type, unit_name, |
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allocatable=storage_units[0][1]) |
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Finish(client, client.RepairNodeStorageUnits, |
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non_master_node, storage_type, unit_name) |
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MarkUnmarkNode(client, non_master_node, "drained")
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MarkUnmarkNode(client, non_master_node, "powered")
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MarkUnmarkNode(client, non_master_node, "offline")
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TestQueries(client, "node")
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|
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def TestGroupOperations(client, node, another_node): |
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""" Tests various operations related to groups only.
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|
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@type client C{GanetiRapiClientWrapper}
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@param client A Ganeti RAPI client to use.
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@type node string
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@param node The name of a node in the cluster.
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@type another_node string
|
517 |
@param another_node The name of another node in the cluster.
|
518 |
|
519 |
"""
|
520 |
|
521 |
DEFAULT_GROUP_NAME = constants.INITIAL_NODE_GROUP_NAME |
522 |
TEST_GROUP_NAME = "TestGroup"
|
523 |
ALTERNATE_GROUP_NAME = "RenamedTestGroup"
|
524 |
|
525 |
Finish(client, client.CreateGroup, |
526 |
TEST_GROUP_NAME, alloc_policy=constants.ALLOC_POLICY_PREFERRED, |
527 |
dry_run=True)
|
528 |
|
529 |
Finish(client, client.CreateGroup, |
530 |
TEST_GROUP_NAME, alloc_policy=constants.ALLOC_POLICY_PREFERRED) |
531 |
|
532 |
client.GetGroup(TEST_GROUP_NAME) |
533 |
|
534 |
TestQueries(client, "group")
|
535 |
|
536 |
TestTags(client, client.GetGroupTags, client.AddGroupTags, |
537 |
client.DeleteGroupTags, TEST_GROUP_NAME) |
538 |
|
539 |
Finish(client, client.ModifyGroup, |
540 |
TEST_GROUP_NAME, alloc_policy=constants.ALLOC_POLICY_PREFERRED, |
541 |
depends=None)
|
542 |
|
543 |
Finish(client, client.AssignGroupNodes, |
544 |
TEST_GROUP_NAME, [node, another_node], force=False, dry_run=True) |
545 |
|
546 |
Finish(client, client.AssignGroupNodes, |
547 |
TEST_GROUP_NAME, [another_node], force=False)
|
548 |
|
549 |
Finish(client, client.RenameGroup, |
550 |
TEST_GROUP_NAME, ALTERNATE_GROUP_NAME) |
551 |
|
552 |
Finish(client, client.RenameGroup, |
553 |
ALTERNATE_GROUP_NAME, TEST_GROUP_NAME) |
554 |
|
555 |
Finish(client, client.AssignGroupNodes, |
556 |
DEFAULT_GROUP_NAME, [another_node], force=False)
|
557 |
|
558 |
Finish(client, client.DeleteGroup, TEST_GROUP_NAME, dry_run=True)
|
559 |
|
560 |
Finish(client, client.DeleteGroup, TEST_GROUP_NAME) |
561 |
|
562 |
|
563 |
def TestNetworkConnectDisconnect(client, network_name, mode, link): |
564 |
""" Test connecting and disconnecting the network to a new node group.
|
565 |
|
566 |
@type network_name string
|
567 |
@param network_name The name of an existing and unconnected network.
|
568 |
@type mode string
|
569 |
@param mode The network mode.
|
570 |
@type link string
|
571 |
@param link The network link.
|
572 |
|
573 |
"""
|
574 |
# For testing the connect/disconnect calls, a group is needed
|
575 |
TEST_GROUP_NAME = "TestGroup"
|
576 |
Finish(client, client.CreateGroup, |
577 |
TEST_GROUP_NAME, alloc_policy=constants.ALLOC_POLICY_PREFERRED) |
578 |
|
579 |
Finish(client, client.ConnectNetwork, |
580 |
network_name, TEST_GROUP_NAME, mode, link, dry_run=True)
|
581 |
|
582 |
Finish(client, client.ConnectNetwork, |
583 |
network_name, TEST_GROUP_NAME, mode, link) |
584 |
|
585 |
Finish(client, client.DisconnectNetwork, |
586 |
network_name, TEST_GROUP_NAME, dry_run=True)
|
587 |
|
588 |
Finish(client, client.DisconnectNetwork, |
589 |
network_name, TEST_GROUP_NAME) |
590 |
|
591 |
# Clean up the group
|
592 |
Finish(client, client.DeleteGroup, TEST_GROUP_NAME) |
593 |
|
594 |
|
595 |
def TestNetworks(client): |
596 |
""" Add some networks of different sizes, using RFC5737 addresses like in the
|
597 |
QA.
|
598 |
|
599 |
"""
|
600 |
|
601 |
NETWORK_NAME = "SurelyCertainlyNonexistentNetwork"
|
602 |
|
603 |
Finish(client, client.CreateNetwork, |
604 |
NETWORK_NAME, "192.0.2.0/30", tags=[], dry_run=True) |
605 |
|
606 |
Finish(client, client.CreateNetwork, |
607 |
NETWORK_NAME, "192.0.2.0/30", tags=[])
|
608 |
|
609 |
client.GetNetwork(NETWORK_NAME) |
610 |
|
611 |
TestTags(client, client.GetNetworkTags, client.AddNetworkTags, |
612 |
client.DeleteNetworkTags, NETWORK_NAME) |
613 |
|
614 |
Finish(client, client.ModifyNetwork, |
615 |
NETWORK_NAME, mac_prefix=None)
|
616 |
|
617 |
TestQueries(client, "network")
|
618 |
|
619 |
default_nicparams = qa_config.get("default-nicparams", None) |
620 |
|
621 |
# The entry might not be present in the QA config
|
622 |
if default_nicparams is not None: |
623 |
mode = default_nicparams.get("mode", None) |
624 |
link = default_nicparams.get("link", None) |
625 |
if mode is not None and link is not None: |
626 |
TestNetworkConnectDisconnect(client, NETWORK_NAME, mode, link) |
627 |
|
628 |
# Clean up the network
|
629 |
Finish(client, client.DeleteNetwork, |
630 |
NETWORK_NAME, dry_run=True)
|
631 |
|
632 |
Finish(client, client.DeleteNetwork, NETWORK_NAME) |
633 |
|
634 |
|
635 |
def Workload(client): |
636 |
""" The actual RAPI workload used for tests.
|
637 |
|
638 |
@type client C{GanetiRapiClientWrapper}
|
639 |
@param client A wrapped RAPI client.
|
640 |
|
641 |
"""
|
642 |
|
643 |
# First just the simple information retrievals
|
644 |
TestGetters(client) |
645 |
|
646 |
# Then the only remaining function which is parameter-free
|
647 |
Finish(client, client.RedistributeConfig) |
648 |
|
649 |
TestTags(client, client.GetClusterTags, client.AddClusterTags, |
650 |
client.DeleteClusterTags) |
651 |
|
652 |
# Generously assume the master is present
|
653 |
node = qa_config.AcquireNode() |
654 |
TestTags(client, client.GetNodeTags, client.AddNodeTags, |
655 |
client.DeleteNodeTags, node.primary) |
656 |
node.Release() |
657 |
|
658 |
# Instance tests
|
659 |
|
660 |
# First remove all instances the QA might have created
|
661 |
RemoveAllInstances(client) |
662 |
|
663 |
nodes = qa_config.AcquireManyNodes(2)
|
664 |
instance_one = qa_config.AcquireInstance() |
665 |
instance_two = qa_config.AcquireInstance() |
666 |
TestSingleInstance(client, instance_one.name, instance_two.name, |
667 |
nodes[0].primary, nodes[1].primary) |
668 |
instance_two.Release() |
669 |
instance_one.Release() |
670 |
qa_config.ReleaseManyNodes(nodes) |
671 |
|
672 |
# Test all the queries which involve resources that do not have functions
|
673 |
# of their own
|
674 |
TestQueries(client, "lock")
|
675 |
TestQueries(client, "job")
|
676 |
TestQueries(client, "export")
|
677 |
|
678 |
node = qa_config.AcquireNode(exclude=qa_config.GetMasterNode()) |
679 |
TestNodeOperations(client, node.primary) |
680 |
TestQueryFiltering(client, node.primary) |
681 |
node.Release() |
682 |
|
683 |
nodes = qa_config.AcquireManyNodes(2)
|
684 |
TestGroupOperations(client, nodes[0].primary, nodes[1].primary) |
685 |
qa_config.ReleaseManyNodes(nodes) |
686 |
|
687 |
TestNetworks(client) |
688 |
|
689 |
|
690 |
def Usage(): |
691 |
sys.stderr.write("Usage:\n\trapi-workload.py qa-config-file")
|
692 |
|
693 |
|
694 |
def Main(): |
695 |
if len(sys.argv) < 2: |
696 |
Usage() |
697 |
|
698 |
qa_config.Load(sys.argv[1])
|
699 |
|
700 |
# Only the master will be present after a fresh QA cluster setup, so we have
|
701 |
# to invoke this to get all the other nodes.
|
702 |
qa_node.TestNodeAddAll() |
703 |
|
704 |
client = GanetiRapiClientWrapper() |
705 |
|
706 |
Workload(client) |
707 |
|
708 |
qa_node.TestNodeRemoveAll() |
709 |
|
710 |
# The method invoked has the naming of the protected method, and pylint does
|
711 |
# not like this. Disabling the warning is healthier than explicitly adding and
|
712 |
# maintaining an exception for this method in the wrapper.
|
713 |
# pylint: disable=W0212
|
714 |
client._OutputMethodInvocationDetails() |
715 |
# pylint: enable=W0212
|
716 |
|
717 |
if __name__ == "__main__": |
718 |
Main() |