root / snf-cyclades-app / synnefo / quotas / management / commands / enforce-resources-cyclades.py @ d14155e3
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# Copyright 2013 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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# 1. Redistributions of source code must retain the above
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# copyright notice, this list of conditions and the following
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# disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials
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# provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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import string |
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from optparse import make_option |
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from django.db import transaction |
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from synnefo.quotas import util |
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from synnefo.quotas import enforce |
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from synnefo.quotas import errors |
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from snf_django.management.commands import SynnefoCommand, CommandError |
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from snf_django.management.utils import pprint_table |
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DEFAULT_RESOURCES = ["cyclades.cpu",
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"cyclades.ram",
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"cyclades.floating_ip",
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] |
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class Command(SynnefoCommand): |
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help = """Check and fix quota violations for Cyclades resources.
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"""
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option_list = SynnefoCommand.option_list + ( |
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make_option("--users", dest="users", |
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help=("Enforce resources only for the specified list "
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"of users, e.g uuid1,uuid2")),
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make_option("--resources",
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help="Specify resources to check, default: %s" %
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",".join(DEFAULT_RESOURCES)),
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make_option("--fix",
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default=False,
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action="store_true",
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help="Fix violations"),
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make_option("--force",
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default=False,
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action="store_true",
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help=("Confirm actions that may permanently "
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"remove a vm")),
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) |
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def confirm(self): |
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self.stderr.write("Confirm? [y/N] ") |
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response = raw_input()
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if string.lower(response) not in ['y', 'yes']: |
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self.stdout.write("Aborted.\n") |
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exit()
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def get_handlers(self, resources): |
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def rem(v): |
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try:
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resources.remove(v) |
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return True |
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except ValueError: |
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return False |
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if resources is None: |
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resources = list(DEFAULT_RESOURCES)
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else:
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resources = resources.split(",")
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handlers = [h for h in enforce.RESOURCE_HANDLING if rem(h[0])] |
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if resources:
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m = "No such resource '%s'" % resources[0] |
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raise CommandError(m)
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return handlers
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@transaction.commit_on_success
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def handle(self, *args, **options): |
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write = self.stderr.write
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fix = options["fix"]
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force = options["force"]
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users = options['users']
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if users is not None: |
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users = users.split(',')
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handlers = self.get_handlers(options["resources"]) |
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try:
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qh_holdings = util.get_qh_users_holdings(users) |
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except errors.AstakosClientException as e: |
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raise CommandError(e)
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resources = set(h[0] for h in handlers) |
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dangerous = bool(resources.difference(DEFAULT_RESOURCES))
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actions = {} |
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overlimit = [] |
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viol_id = 0
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for resource, handle_resource, resource_type in handlers: |
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if resource_type not in actions: |
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actions[resource_type] = {} |
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actual_resources = enforce.get_actual_resources(resource_type, |
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users) |
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for user, user_quota in qh_holdings.iteritems(): |
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for source, source_quota in user_quota.iteritems(): |
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try:
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qh = util.transform_quotas(source_quota) |
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qh_value, qh_limit, qh_pending = qh[resource] |
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except KeyError: |
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write("Resource '%s' does not exist in Quotaholder"
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" for user '%s' and source '%s'!\n" %
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(resource, user, source)) |
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continue
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if qh_pending:
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write("Pending commission for user '%s', source '%s', "
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"resource '%s'. Skipping\n" %
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(user, source, resource)) |
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continue
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diff = qh_value - qh_limit |
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if diff > 0: |
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viol_id += 1
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overlimit.append((viol_id, user, source, resource, |
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qh_limit, qh_value)) |
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relevant_resources = actual_resources[user] |
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handle_resource(viol_id, resource, relevant_resources, |
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diff, actions) |
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if not overlimit: |
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write("No violations.\n")
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return
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headers = ("#", "User", "Source", "Resource", "Limit", "Usage") |
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pprint_table(self.stderr, overlimit, headers,
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options["output_format"], title="Violations") |
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if any(actions.values()): |
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write("\n")
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if fix:
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if dangerous and not force: |
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write("You are enforcing resources that may permanently "
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"remove a vm.\n")
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self.confirm()
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write("Applying actions. Please wait...\n")
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title = "Applied Actions" if fix else "Suggested Actions" |
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log = enforce.perform_actions(actions, fix=fix) |
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headers = ("Type", "ID", "State", "Action", "Violation") |
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if fix:
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headers += ("Result",)
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pprint_table(self.stderr, log, headers,
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options["output_format"], title=title)
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