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# (c) 2012-2014, Michael DeHaan <michael.dehaan@gmail.com>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.

# Make coding more python3-ish
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type

class AggregateStats:
    ''' holds stats about per-host activity during playbook runs '''

    def __init__(self):

        self.processed = {}
        self.failures  = {}
        self.ok        = {}
        self.dark      = {}
        self.changed   = {}
        self.skipped   = {}

    def increment(self, what, host):
        ''' helper function to bump a statistic '''

        self.processed[host] = 1
        prev = (getattr(self, what)).get(host, 0)
        getattr(self, what)[host] = prev+1

    def summarize(self, host):
        ''' return information about a particular host '''

        return dict(
            ok          = self.ok.get(host, 0),
            failures    = self.failures.get(host, 0),
            unreachable = self.dark.get(host,0),
            changed     = self.changed.get(host, 0),
            skipped     = self.skipped.get(host, 0)
        )