################################### config.yml ###################################

--- !Deploy
global_configuration:
    ssh_private_key: ~/.ssh/id_rsa
    ssh_public_key: ~/.ssh/id_rsa.pub
    hosts_file: 172.17.42.1 solr.opendevmekong.net datapusher.opendevmekong.net data.opendevmekong.net www.opendevmekong.net
target:
    interface: eth0
    host: localhost
registry:
    prefix: registry-mekong.proteus-tech.com
    username: mekonguser
    password: mekongpass
    email: youremail@opendevmekong.net
postgresql:
    rebuild: true
    postgres_password: postgrespass
mysql:
    rebuild: true
    mysql_password: mysqlpass
solr:
    domain: solr.opendevmekong.net
    source: git@github.com:OpenDevelopmentMekong/odm-scripting.git
    branch: master
    path: ansible/roles/solr/files/solr/
    username: solruser
    password: solrpass
ckan:
    domain: data.opendevmekong.net
    admin_username: admin
    admin_password: password
    email_to: youremail@opendevmekong.net
    email_from: no-reply@opendevmekong.net
ckan_database:
    reinitial: true
    host: postgres://dbuser:dbpass@172.17.42.1:5432/ckan
ckan_database_write:
    reinitial: true
    host: postgres://dbwuser:dbwpass@172.17.42.1:5432/ckan_datastore
ckan_database_read:
    reinitial: true
    host: postgres://dbruser:dbrpass@172.17.42.1:5432/ckan_datastore
ckan_datapusher:
    datapusher_domain: datapusher.opendevmekong.net
    username: pusheruser
    password: pusherpass
    domain: data.opendevmekong.net
wordpress:
    domain: www.opendevmekong.net
    source: git@github.com:OpenDevelopmentMekong/WordPress.git
    branch: 4.0.1
wordpress_database:
    reinitial: true
    host: mysql://wpuser:wppass@172.17.42.1:3306/wordpress


################################### start.py ###################################
#!/usr/bin/env python

import os
import yaml

class Deploy(yaml.YAMLObject):
    yaml_loader = yaml.SafeLoader
    yaml_tag = u'!Deploy'

    @classmethod
    def from_yaml(cls, loader, node):
        obj = cls.from_yaml(loader, node)
        obj.check_variables()
        return obj
    def check_variables(self):
        print("test")
        print(os.path.expanduser(self.global_configuration['ssh_public_key']))
        print(os.path.isfile(os.path.normpath(self.global_configuration['ssh_public_key'])))

stream = open("config.yml", "r")
x = yaml.safe_load(stream)


################################### YAMLObject ###################################
class YAMLObject(object):
    """
    An object that can dump itself to a YAML stream
    and load itself from a YAML stream.
    """

    __metaclass__ = YAMLObjectMetaclass
    __slots__ = ()  # no direct instantiation, so allow immutable subclasses

    yaml_loader = Loader
    yaml_dumper = Dumper

    yaml_tag = None
    yaml_flow_style = None

    def from_yaml(cls, loader, node):
        """
        Convert a representation node to a Python object.
        """
        return loader.construct_yaml_object(node, cls)
    from_yaml = classmethod(from_yaml)

    def to_yaml(cls, dumper, data):
        """
        Convert a Python object to a representation node.
        """
        return dumper.represent_yaml_object(cls.yaml_tag, data, cls,
                flow_style=cls.yaml_flow_style)
    to_yaml = classmethod(to_yaml)