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#!/usr/bin/env python

"""This tool verifies that all clients known to the server build
without failures"""

import sys
import fnmatch
import logging
import Bcfg2.Logger
import Bcfg2.Server.Core
from nose.core import TestProgram
from nose.suite import LazySuite
from unittest import TestCase

class ClientTest(TestCase):
    """
    A test case representing the build of all of the configuration for
    a single host.  Checks that none of the build config entities has
    had a failure when it is building.  Optionally ignores some config
    files that we know will cause errors (because they are private
    files we don't have access to, for instance)
    """
    __test__ = False # Do not collect

    def __init__(self, bcfg2_core, client, ignore=None):
        TestCase.__init__(self)
        self.bcfg2_core = bcfg2_core
        self.client = client
        if ignore is None:
            self.ignore = dict()
        else:
            self.ignore = ignore

    def ignore_entry(self, tag, name):
        if tag in self.ignore:
            if name in self.ignore[tag]:
                return True
            else:
                # try wildcard matching
                for pattern in self.ignore[tag]:
                    if fnmatch.fnmatch(name, pattern):
                        return True
        return False

    def runTest(self):
        config = self.bcfg2_core.BuildConfiguration(self.client)

        failures = []
        msg = ["Failures:"]
        for failure in config.xpath('//*[@failure]'):
            if not self.ignore_entry(failure.tag, failure.get('name')):
                failures.append(failure)
                msg.append("%s:%s: %s" % (failure.tag, failure.get("name"),
                                          failure.get("failure")))

        assert len(failures) == 0, "\n".join(msg)

    def __str__(self):
        return "ClientTest(%s)" % self.client

    id = __str__

def main():
    optinfo = dict(noseopts=Bcfg2.Options.TEST_NOSEOPTS,
                   test_ignore=Bcfg2.Options.TEST_IGNORE,
                   validate=Bcfg2.Options.CFG_VALIDATION)
    optinfo.update(Bcfg2.Options.CLI_COMMON_OPTIONS)
    optinfo.update(Bcfg2.Options.SERVER_COMMON_OPTIONS)
    setup = Bcfg2.Options.OptionParser(optinfo)
    setup.hm = \
        "bcfg2-test [options] [client] [client] [...]\nOptions:\n     %s" % \
        setup.buildHelpMessage()
    setup.parse(sys.argv[1:])

    if setup['verbose']:
        Bcfg2.Logger.setup_logging("bcfg2-test", to_syslog=False)

    core = Bcfg2.Server.Core.BaseCore(setup)

    ignore = dict()
    for entry in setup['test_ignore']:
        tag, name = entry.split(":")
        try:
            ignore[tag].append(name)
        except KeyError:
            ignore[tag] = [name]

    def run_tests():
        core.fam.handle_events_in_interval(0.1)

        if setup['args']:
            clients = setup['args']
        else:
            clients = core.metadata.clients

        for client in clients:
            logging.info("Building %s" % client)
            yield ClientTest(core, client, ignore)

    TestProgram(argv=sys.argv[0:1] + setup['noseopts'],
                suite=LazySuite(run_tests))

if __name__ == "__main__":
    sys.exit(main())