moonv4 cleanup

Change-Id: Icef927f3236d985ac13ff7376f6ce6314b2b39b0
Signed-off-by: WuKong <rebirthmonkey@gmail.com>

22 files changed, 2930 insertions, 0 deletions

diff --git a/python_moonutilities/Changelog b/python_moonutilities/Changelog
new file mode 100644
index 00000000..dd441427
--- /dev/null
+++ b/python_moonutilities/Changelog
@@ -0,0 +1,72 @@
+# Copyright 2015 Open Platform for NFV Project, Inc. and its contributors
+# This software is distributed under the terms and conditions of the 'Apache-2.0'
+# license which can be found in the file 'LICENSE' in this package distribution
+# or at 'http://www.apache.org/licenses/LICENSE-2.0'.
+
+
+CHANGES
+=======
+
+0.1.0
+-----
+- First version of the moon_utilities library.
+
+1.0.0
+-----
+- First public version of the moon_utilities library.
+
+1.0.1
+-----
+- Update setup.py to force the installation of requirements.
+
+1.0.2
+-----
+- Test PyPi upload
+
+1.1.0
+-----
+- Add functions to get configuration from Consul
+
+1.1.1
+-----
+- Add a missing requirements
+
+1.2.0
+-----
+- Add authentication features for interface
+
+1.3.0
+-----
+- Add cache functionality
+
+1.3.1
+-----
+- Delete Oslo config possibilities
+
+1.3.2
+-----
+- Delete Oslo logging and config
+
+1.3.3
+-----
+- Update the cache
+
+1.3.4
+-----
+- Fix a bug on the connection between interface and authz
+
+1.4.0
+-----
+- Add a waiting loop when the Keystone server is not currently available
+
+1.4.1
+-----
+- Cleanup moon_utilities code
+
+1.4.2
+-----
+- Update the name of the library (from moon_utilities)
+
+1.4.3
+-----
+- Fix a bug in MANIFEST.in
diff --git a/python_moonutilities/LICENSE b/python_moonutilities/LICENSE
new file mode 100644
index 00000000..d6456956
--- /dev/null
+++ b/python_moonutilities/LICENSE
@@ -0,0 +1,202 @@
+
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diff --git a/python_moonutilities/MANIFEST.in b/python_moonutilities/MANIFEST.in
new file mode 100644
index 00000000..2a5ac509
--- /dev/null
+++ b/python_moonutilities/MANIFEST.in
@@ -0,0 +1,10 @@
+# Copyright 2015 Open Platform for NFV Project, Inc. and its contributors
+# This software is distributed under the terms and conditions of the 'Apache-2.0'
+# license which can be found in the file 'LICENSE' in this package distribution
+# or at 'http://www.apache.org/licenses/LICENSE-2.0'.
+
+include README.md
+include LICENSE
+include Changelog
+include setup.py
+include requirements.txt
diff --git a/python_moonutilities/README.md b/python_moonutilities/README.md
new file mode 100644
index 00000000..8e21966a
--- /dev/null
+++ b/python_moonutilities/README.md
@@ -0,0 +1,33 @@
+# python-moonutilities Package
+This package contains the core module for the Moon project.
+It is designed to provide authorization feature to all OpenStack components.
+
+For any other information, refer to the parent project:
+
+    https://git.opnfv.org/moon
+
+python-moonutilities is a common Python lib for other Moon Python packages
+
+## Build
+### Build Python Package
+```bash
+cd ${MOON_HOME}/python_moonutilities
+python3 setup.py sdist bdist_wheel
+```
+
+### Push Python Package to PIP
+```bash
+cd ${MOON_HOME}/python_moonutilities
+gpg --detach-sign -u "${GPG_ID}" -a dist/python_moonutilities-X.Y.Z-py3-none-any.whl
+gpg --detach-sign -u "${GPG_ID}" -a dist/python_moonutilities-X.Y.Z.tar.gz
+twine upload dist/python_moonutilities-X.Y.Z-py3-none-any.whl dist/python_moonutilities-X.Y.Z-py3-none-any.whl.asc
+twine upload dist/python_moonutilities-X.Y.Z.tar.gz dist/python_moonutilities-X.Y.Z.tar.gz.asc
+```
+
+## Test
+### Python Unit Test
+launch Docker for Python unit tests
+```bash
+cd ${MOON_HOME}/python_moonutilities
+docker run --rm --volume $(pwd):/data wukongsun/moon_python_unit_test:latest
+```
diff --git a/python_moonutilities/python_moonutilities/__init__.py b/python_moonutilities/python_moonutilities/__init__.py
new file mode 100644
index 00000000..fb899fe2
--- /dev/null
+++ b/python_moonutilities/python_moonutilities/__init__.py
@@ -0,0 +1,6 @@
+# Copyright 2015 Open Platform for NFV Project, Inc. and its contributors
+# This software is distributed under the terms and conditions of the 'Apache-2.0'
+# license which can be found in the file 'LICENSE' in this package distribution
+# or at 'http://www.apache.org/licenses/LICENSE-2.0'.
+
+__version__ = "1.4.3"
diff --git a/python_moonutilities/python_moonutilities/api.py b/python_moonutilities/python_moonutilities/api.py
new file mode 100644
index 00000000..8e80c21d
--- /dev/null
+++ b/python_moonutilities/python_moonutilities/api.py
@@ -0,0 +1,28 @@
+# Copyright 2015 Open Platform for NFV Project, Inc. and its contributors
+# This software is distributed under the terms and conditions of the 'Apache-2.0'
+# license which can be found in the file 'LICENSE' in this package distribution
+# or at 'http://www.apache.org/licenses/LICENSE-2.0'.
+
+
+class APIList(object):
+
+    API_LIST = ()
+
+    def __init__(self, api_list):
+        self.API_LIST = api_list
+
+    def list_api(self, ctx):
+        api = dict()
+        for obj in self.API_LIST:
+            api[obj.__name__] = dict()
+            api[obj.__name__]["description"] = obj.__doc__.strip() if obj.__doc__ else ""
+            api[obj.__name__]["version"] = obj.__version__
+            api[obj.__name__]["commands"] = dict()
+            for cmd in filter(lambda x: not x.startswith("__"), dir(obj)):
+                doc = eval("obj.{}.__doc__".format(cmd))
+                if not doc:
+                    doc = ""
+                api[obj.__name__]["commands"][cmd] = doc.strip()
+        return api
+
+
diff --git a/python_moonutilities/python_moonutilities/auth.py b/python_moonutilities/python_moonutilities/auth.py
new file mode 100644
index 00000000..7656f4e7
--- /dev/null
+++ b/python_moonutilities/python_moonutilities/auth.py
@@ -0,0 +1,76 @@
+# Copyright 2015 Open Platform for NFV Project, Inc. and its contributors
+# This software is distributed under the terms and conditions of the 'Apache-2.0'
+# license which can be found in the file 'LICENSE' in this package distribution
+# or at 'http://www.apache.org/licenses/LICENSE-2.0'.
+
+import os
+import requests
+import time
+from functools import wraps
+from flask import request
+from oslo_log import log as logging
+from python_moonutilities import exceptions, configuration
+
+
+LOG = logging.getLogger(__name__)
+KEYSTONE_CONFIG = configuration.get_configuration("openstack/keystone")["openstack/keystone"]
+TOKENS = {}
+
+
+def check_token(token, url=None):
+    _verify = False
+    if KEYSTONE_CONFIG['certificate']:
+        _verify = KEYSTONE_CONFIG['certificate']
+    try:
+        os.environ.pop("http_proxy")
+        os.environ.pop("https_proxy")
+    except KeyError:
+        pass
+    if not url:
+        url = KEYSTONE_CONFIG['url']
+    headers = {
+        "Content-Type": "application/json",
+        'X-Subject-Token': token,
+        'X-Auth-Token': token,
+    }
+    if KEYSTONE_CONFIG['check_token'].lower() in ("false", "no", "n"):
+        # TODO (asteroide): must send the admin id
+        return "admin" if not token else token
+    if KEYSTONE_CONFIG['check_token'].lower() in ("yes", "y", "true"):
+        if token in TOKENS:
+            delta = time.mktime(TOKENS[token]["expires_at"]) - time.mktime(time.gmtime())
+            if delta > 0:
+                return TOKENS[token]["user"]
+            raise exceptions.KeystoneError
+        else:
+            req = requests.get("{}/auth/tokens".format(url), headers=headers, verify=_verify)
+            if req.status_code in (200, 201):
+                # Note (asteroide): the time stamps is not in ISO 8601, so it is necessary to delete
+                # characters after the dot
+                token_time = req.json().get("token").get("expires_at").split(".")
+                TOKENS[token] = dict()
+                TOKENS[token]["expires_at"] = time.strptime(token_time[0], "%Y-%m-%dT%H:%M:%S")
+                TOKENS[token]["user"] = req.json().get("token").get("user").get("id")
+                return TOKENS[token]["user"]
+            LOG.error("{} - {}".format(req.status_code, req.text))
+            raise exceptions.KeystoneError
+    elif KEYSTONE_CONFIG['check_token'].lower() == "strict":
+        req = requests.head("{}/auth/tokens".format(url), headers=headers, verify=_verify)
+        if req.status_code in (200, 201):
+            return token
+        LOG.error("{} - {}".format(req.status_code, req.text))
+        raise exceptions.KeystoneError
+    raise exceptions.KeystoneError
+
+
+def check_auth(function):
+    @wraps(function)
+    def wrapper(*args, **kwargs):
+        token = request.headers.get('X-Auth-Token')
+        token = check_token(token)
+        if not token:
+            raise exceptions.AuthException
+        user_id = kwargs.pop("user_id", token)
+        result = function(*args, **kwargs, user_id=user_id)
+        return result
+    return wrapper
diff --git a/python_moonutilities/python_moonutilities/cache.py b/python_moonutilities/python_moonutilities/cache.py
new file mode 100644
index 00000000..93e3daca
--- /dev/null
+++ b/python_moonutilities/python_moonutilities/cache.py
@@ -0,0 +1,543 @@
+import logging
+import time
+import requests
+from uuid import uuid4
+from python_moonutilities import configuration, exceptions
+
+LOG = logging.getLogger("moon.utilities.cache")
+
+
+class Cache(object):
+    # TODO (asteroide): set cache integer in CONF file
+    '''
+        [NOTE] Propose to define the following variables inside the init method
+        as defining them out side the init, will be treated as private static variables
+        and keep tracks with any changes done anywhere
+        for more info : you can check https://docs.python.org/3/tutorial/classes.html#class-and-instance-variables
+    '''
+    __UPDATE_INTERVAL = 10
+
+    __CONTAINERS = {}
+    __CONTAINERS_UPDATE = 0
+
+    __CONTAINER_CHAINING_UPDATE = 0
+    __CONTAINER_CHAINING = {}
+
+    __PDP = {}
+    __PDP_UPDATE = 0
+
+    __POLICIES = {}
+    __POLICIES_UPDATE = 0
+
+    __MODELS = {}
+    __MODELS_UPDATE = 0
+
+    __SUBJECTS = {}
+    __OBJECTS = {}
+    __ACTIONS = {}
+
+    __SUBJECT_ASSIGNMENTS = {}
+    __OBJECT_ASSIGNMENTS = {}
+    __ACTION_ASSIGNMENTS = {}
+
+    __SUBJECT_CATEGORIES = {}
+    __SUBJECT_CATEGORIES_UPDATE = 0
+    __OBJECT_CATEGORIES = {}
+    __OBJECT_CATEGORIES_UPDATE = 0
+    __ACTION_CATEGORIES = {}
+    __ACTION_CATEGORIES_UPDATE = 0
+
+    __META_RULES = {}
+    __META_RULES_UPDATE = 0
+
+    __RULES = {}
+    __RULES_UPDATE = 0
+
+    __AUTHZ_REQUESTS = {}
+
+    def __init__(self):
+        self.manager_url = "{}://{}:{}".format(
+            configuration.get_components()['manager'].get('protocol', 'http'),
+            configuration.get_components()['manager']['hostname'],
+            configuration.get_components()['manager']['port']
+        )
+        self.orchestrator_url = "{}://{}:{}".format(
+            configuration.get_components()['orchestrator'].get('protocol', 'http'),
+            configuration.get_components()['orchestrator']['hostname'],
+            configuration.get_components()['orchestrator']['port']
+        )
+
+    def update(self):
+        self.__update_container()
+        self.__update_pdp()
+        self.__update_policies()
+        self.__update_models()
+        for key, value in self.__PDP.items():
+            # LOG.info("Updating container_chaining with {}".format(value["keystone_project_id"]))
+            self.__update_container_chaining(value["keystone_project_id"])
+
+    @property
+    def authz_requests(self):
+        return self.__AUTHZ_REQUESTS
+
+    # perimeter functions
+
+    @property
+    def subjects(self):
+        return self.__SUBJECTS
+
+    def update_subjects(self, policy_id=None):
+        req = requests.get("{}/policies/{}/subjects".format(
+            self.manager_url, policy_id))
+        self.__SUBJECTS[policy_id] = req.json()['subjects']
+
+    def get_subject(self, policy_id, name):
+        try:
+            for _subject_id, _subject_dict in self.__SUBJECTS[policy_id].items():
+                if _subject_dict["name"] == name:
+                    return _subject_id
+        except KeyError:
+            pass
+        self.update_subjects(policy_id)
+        for _subject_id, _subject_dict in self.__SUBJECTS[policy_id].items():
+            if _subject_dict["name"] == name:
+                return _subject_id
+        raise exceptions.SubjectUnknown("Cannot find subject {}".format(name))
+
+    @property
+    def objects(self):
+        return self.__OBJECTS
+
+    def update_objects(self, policy_id=None):
+        req = requests.get("{}/policies/{}/objects".format(
+            self.manager_url, policy_id))
+        self.__OBJECTS[policy_id] = req.json()['objects']
+
+    def get_object(self, policy_id, name):
+        try:
+            for _object_id, _object_dict in self.__OBJECTS[policy_id].items():
+                if _object_dict["name"] == name:
+                    return _object_id
+        except KeyError:
+            pass
+        self.update_objects(policy_id)
+        for _object_id, _object_dict in self.__OBJECTS[policy_id].items():
+            if _object_dict["name"] == name:
+                return _object_id
+        raise exceptions.SubjectUnknown("Cannot find object {}".format(name))
+
+    @property
+    def actions(self):
+        return self.__ACTIONS
+
+    def update_actions(self, policy_id=None):
+        req = requests.get("{}/policies/{}/actions".format(
+            self.manager_url, policy_id))
+        self.__ACTIONS[policy_id] = req.json()['actions']
+
+    def get_action(self, policy_id, name):
+        try:
+            for _action_id, _action_dict in self.__ACTIONS[policy_id].items():
+                if _action_dict["name"] == name:
+                    return _action_id
+        except KeyError:
+            pass
+        self.update_actions(policy_id)
+        for _action_id, _action_dict in self.__ACTIONS[policy_id].items():
+            if _action_dict["name"] == name:
+                return _action_id
+        raise exceptions.SubjectUnknown("Cannot find action {}".format(name))
+
+    # meta_rule functions
+
+    @property
+    def meta_rules(self):
+        current_time = time.time()
+        if self.__META_RULES_UPDATE + self.__UPDATE_INTERVAL < current_time:
+            self.__update_meta_rules()
+        self.__META_RULES_UPDATE = current_time
+        return self.__META_RULES
+
+    def __update_meta_rules(self):
+        req = requests.get("{}/meta_rules".format(self.manager_url))
+        self.__META_RULES = req.json()['meta_rules']
+
+    # rule functions
+
+    @property
+    def rules(self):
+        current_time = time.time()
+        if self.__RULES_UPDATE + self.__UPDATE_INTERVAL < current_time:
+            self.__update_rules()
+        self.__RULES_UPDATE = current_time
+        return self.__RULES
+
+    def __update_rules(self):
+        for policy_id in self.__POLICIES:
+            LOG.info("Get {}".format("{}/policies/{}/rules".format(
+                self.manager_url, policy_id)))
+            req = requests.get("{}/policies/{}/rules".format(
+                self.manager_url, policy_id))
+            self.__RULES[policy_id] = req.json()['rules']
+        LOG.info("UPDATE RULES {}".format(self.__RULES))
+
+    # assignment functions
+
+    @property
+    def subject_assignments(self):
+        return self.__SUBJECT_ASSIGNMENTS
+
+    def update_subject_assignments(self, policy_id=None, perimeter_id=None):
+        if perimeter_id:
+            req = requests.get("{}/policies/{}/subject_assignments/{}".format(
+                self.manager_url, policy_id, perimeter_id))
+        else:
+            req = requests.get("{}/policies/{}/subject_assignments".format(
+                self.manager_url, policy_id))
+        if policy_id not in self.__SUBJECT_ASSIGNMENTS:
+            self.__SUBJECT_ASSIGNMENTS[policy_id] = {}
+        self.__SUBJECT_ASSIGNMENTS[policy_id].update(
+            req.json()['subject_assignments'])
+
+    def get_subject_assignments(self, policy_id, perimeter_id, category_id):
+        if policy_id not in self.subject_assignments:
+            self.update_subject_assignments(policy_id, perimeter_id)
+        ''' 
+            [NOTE] invalid condition for testing existence of policy_id
+            because update_subject_assignments function already add an empty object 
+            with the given policy_id and then assign the response to it
+            as mentioned in these lines of code (line 191,192)
+
+            Note: the same condition applied for the object,action assignment
+            line 234, 260
+        '''
+        if policy_id not in self.subject_assignments:
+            raise Exception("Cannot found the policy {}".format(policy_id))
+        for key, value in self.subject_assignments[policy_id].items():
+            if perimeter_id == value['subject_id'] and category_id == value['category_id']:
+                return value['assignments']
+        return []
+
+    @property
+    def object_assignments(self):
+        return self.__OBJECT_ASSIGNMENTS
+
+    def update_object_assignments(self, policy_id=None, perimeter_id=None):
+        if perimeter_id:
+            req = requests.get("{}/policies/{}/object_assignments/{}".format(
+                self.manager_url, policy_id, perimeter_id))
+        else:
+            req = requests.get("{}/policies/{}/object_assignments".format(
+                self.manager_url, policy_id))
+        if policy_id not in self.__OBJECT_ASSIGNMENTS:
+            self.__OBJECT_ASSIGNMENTS[policy_id] = {}
+        self.__OBJECT_ASSIGNMENTS[policy_id].update(
+            req.json()['object_assignments'])
+
+    def get_object_assignments(self, policy_id, perimeter_id, category_id):
+        if policy_id not in self.object_assignments:
+            self.update_object_assignments(policy_id, perimeter_id)
+        if policy_id not in self.object_assignments:
+            raise Exception("Cannot found the policy {}".format(policy_id))
+        for key, value in self.object_assignments[policy_id].items():
+            if perimeter_id == value['object_id'] and category_id == value['category_id']:
+                return value['assignments']
+        return []
+
+    @property
+    def action_assignments(self):
+        return self.__ACTION_ASSIGNMENTS
+
+    def update_action_assignments(self, policy_id=None, perimeter_id=None):
+        if perimeter_id:
+            req = requests.get("{}/policies/{}/action_assignments/{}".format(
+                self.manager_url, policy_id, perimeter_id))
+        else:
+            req = requests.get("{}/policies/{}/action_assignments".format(
+                self.manager_url, policy_id))
+        if policy_id not in self.__ACTION_ASSIGNMENTS:
+            self.__ACTION_ASSIGNMENTS[policy_id] = {}
+        self.__ACTION_ASSIGNMENTS[policy_id].update(
+            req.json()['action_assignments'])
+
+    def get_action_assignments(self, policy_id, perimeter_id, category_id):
+        if policy_id not in self.action_assignments:
+            self.update_action_assignments(policy_id, perimeter_id)
+        if policy_id not in self.action_assignments:
+            raise Exception("Cannot found the policy {}".format(policy_id))
+        for key, value in self.action_assignments[policy_id].items():
+            if perimeter_id == value['action_id'] and category_id == value['category_id']:
+                return value['assignments']
+        return []
+
+    # category functions
+
+    @property
+    def subject_categories(self):
+        current_time = time.time()
+        if self.__SUBJECT_CATEGORIES_UPDATE + self.__UPDATE_INTERVAL < current_time:
+            self.__update_subject_categories()
+        self.__SUBJECT_CATEGORIES_UPDATE = current_time
+        return self.__SUBJECT_CATEGORIES
+
+    def __update_subject_categories(self):
+        req = requests.get("{}/policies/subject_categories".format(
+            self.manager_url))
+        self.__SUBJECT_CATEGORIES.update(req.json()['subject_categories'])
+
+    @property
+    def object_categories(self):
+        current_time = time.time()
+        if self.__OBJECT_CATEGORIES_UPDATE + self.__UPDATE_INTERVAL < current_time:
+            self.__update_object_categories()
+        self.__OBJECT_CATEGORIES_UPDATE = current_time
+        return self.__OBJECT_CATEGORIES
+
+    def __update_object_categories(self):
+        req = requests.get("{}/policies/object_categories".format(
+            self.manager_url))
+        self.__OBJECT_CATEGORIES.update(req.json()['object_categories'])
+
+    @property
+    def action_categories(self):
+        current_time = time.time()
+        if self.__ACTION_CATEGORIES_UPDATE + self.__UPDATE_INTERVAL < current_time:
+            self.__update_action_categories()
+        self.__ACTION_CATEGORIES_UPDATE = current_time
+        return self.__ACTION_CATEGORIES
+
+    def __update_action_categories(self):
+        req = requests.get("{}/policies/action_categories".format(
+            self.manager_url))
+        self.__ACTION_CATEGORIES.update(req.json()['action_categories'])
+
+    # PDP functions
+
+    def __update_pdp(self):
+        req = requests.get("{}/pdp".format(self.manager_url))
+        pdp = req.json()
+        for _pdp in pdp["pdps"].values():
+            if _pdp['keystone_project_id'] not in self.__CONTAINER_CHAINING:
+                self.__CONTAINER_CHAINING[_pdp['keystone_project_id']] = {}
+                # Note (asteroide): force update of chaining
+                self.__update_container_chaining(_pdp['keystone_project_id'])
+        for key, value in pdp["pdps"].items():
+            self.__PDP[key] = value
+
+    @property
+    def pdp(self):
+        """Policy Decision Point
+        Example of content:
+        {
+            "pdp_id": {
+                "keystone_project_id": "keystone_project_id",
+                "name": "pdp1",
+                "description": "test",
+                "security_pipeline": [
+                    "policy_id"
+                ]
+            }
+        }
+
+        :return:
+        """
+        current_time = time.time()
+        if self.__PDP_UPDATE + self.__UPDATE_INTERVAL < current_time:
+            self.__update_pdp()
+        self.__PDP_UPDATE = current_time
+        return self.__PDP
+
+    # policy functions
+    def __update_policies(self):
+        req = requests.get("{}/policies".format(self.manager_url))
+        policies = req.json()
+        for key, value in policies["policies"].items():
+            self.__POLICIES[key] = value
+
+    @property
+    def policies(self):
+        current_time = time.time()
+        if self.__POLICIES_UPDATE + self.__UPDATE_INTERVAL < current_time:
+            self.__update_policies()
+        self.__POLICIES_UPDATE = current_time
+        return self.__POLICIES
+
+    # model functions
+
+    def __update_models(self):
+        req = requests.get("{}/models".format(self.manager_url))
+        models = req.json()
+        for key, value in models["models"].items():
+            self.__MODELS[key] = value
+
+    @property
+    def models(self):
+        current_time = time.time()
+        if self.__MODELS_UPDATE + self.__UPDATE_INTERVAL < current_time:
+            self.__update_models()
+        self.__MODELS_UPDATE = current_time
+        return self.__MODELS
+
+    # helper functions
+
+    def get_policy_from_meta_rules(self, meta_rule_id):
+        for pdp_key, pdp_value in self.pdp.items():
+            for policy_id in pdp_value["security_pipeline"]:
+                model_id = self.policies[policy_id]["model_id"]
+                if meta_rule_id in self.models[model_id]["meta_rules"]:
+                    return policy_id
+
+    def get_pdp_from_keystone_project(self, keystone_project_id):
+        for pdp_key, pdp_value in self.pdp.items():
+            if keystone_project_id == pdp_value["keystone_project_id"]:
+                return pdp_key
+
+    def get_keystone_project_id_from_policy_id(self, policy_id):
+        for pdp_key, pdp_value in self.pdp.items():
+            if policy_id in pdp_value["security_pipeline"]:
+                return pdp_value["keystone_project_id"]
+            # for policy_id in pdp_value["security_pipeline"]:
+            #     model_id = self.policies[policy_id]["model_id"]
+            #     if meta_rule_id in self.models[model_id]["meta_rules"]:
+            #         return pdp_value["keystone_project_id"]
+
+    def get_containers_from_keystone_project_id(self, keystone_project_id,
+                                                meta_rule_id=None):
+        for container_id, container_values in self.containers.items():
+            for container_value in container_values:
+                if 'keystone_project_id' not in container_value:
+                    continue
+                if container_value['keystone_project_id'] == keystone_project_id:
+                    if not meta_rule_id:
+                        yield container_id, container_value
+                    elif container_value.get('meta_rule_id') == meta_rule_id:
+                        yield container_id, container_value
+                        break
+
+    # containers functions
+
+    def __update_container(self):
+        req = requests.get("{}/pods".format(self.orchestrator_url))
+        pods = req.json()
+        for key, value in pods["pods"].items():
+            # if key not in self.__CONTAINERS:
+            self.__CONTAINERS[key] = value
+            # else:
+            #     for container in value:
+            #         self.__CONTAINERS[key].update(value)
+
+    def add_container(self, container_data):
+        """Add a new container in the cache
+
+        :param container_data: dictionary with information for the container
+        Example:
+        {
+            "name": name,
+            "hostname": name,
+            "port": {
+                "PrivatePort": tcp_port,
+                "Type": "tcp",
+                "IP": "0.0.0.0",
+                "PublicPort": tcp_port
+            },
+            "keystone_project_id": uuid,
+            "pdp_id": self.CACHE.get_pdp_from_keystone_project(uuid),
+            "meta_rule_id": meta_rule_id,
+            "container_name": container_name,
+            "plugin_name": plugin_name
+            "container_id": "container_id"
+        }
+
+        :return:
+        """
+        self.__CONTAINERS[uuid4().hex] = {
+            "keystone_project_id": container_data['keystone_project_id'],
+            "name": container_data['name'],
+            "container_id": container_data['container_id'],
+            "hostname": container_data['name'],
+            "policy_id": container_data['policy_id'],
+            "meta_rule_id": container_data['meta_rule_id'],
+            "port": [
+                {
+                    "PublicPort": container_data['port']["PublicPort"],
+                    "Type": container_data['port']["Type"],
+                    "IP": container_data['port']["IP"],
+                    "PrivatePort": container_data['port']["PrivatePort"]
+                }
+            ],
+            "genre": container_data['plugin_name']
+        }
+        self.__update_container_chaining(self.get_keystone_project_id_from_policy_id(container_data['policy_id']))
+
+    @property
+    def containers(self):
+        """Containers cache
+        example of content :
+        {
+            "policy_uuid1": "component_hostname1",
+            "policy_uuid2": "component_hostname2",
+        }
+        :return:
+        """
+        current_time = time.time()
+        if self.__CONTAINERS_UPDATE + self.__UPDATE_INTERVAL < current_time:
+            self.__update_container()
+        self.__CONTAINERS_UPDATE = current_time
+        return self.__CONTAINERS
+
+    @property
+    def container_chaining(self):
+        """Cache for mapping Keystone Project ID with meta_rule ID and container ID
+        Example of content:
+        {
+            "keystone_project_id": [
+                {
+                    "container_id": "container_id",
+                    "genre": "genre",
+                    "policy_id": "policy_id",
+                    "meta_rule_id": "meta_rule_id",
+                }
+            ]
+        }
+
+        :return:
+        """
+        current_time = time.time()
+        if self.__CONTAINER_CHAINING_UPDATE + self.__UPDATE_INTERVAL < current_time:
+            for key, value in self.pdp.items():
+                if not value["keystone_project_id"]:
+                    continue
+                self.__update_container_chaining(value["keystone_project_id"])
+        self.__CONTAINER_CHAINING_UPDATE = current_time
+        LOG.info(self.__CONTAINER_CHAINING_UPDATE)
+        return self.__CONTAINER_CHAINING
+
+    def __update_container_chaining(self, keystone_project_id):
+        container_ids = []
+        for pdp_id, pdp_value, in self.__PDP.items():
+            if pdp_value:
+                if pdp_value["keystone_project_id"] == keystone_project_id:
+                    for policy_id in pdp_value["security_pipeline"]:
+                        model_id = self.__POLICIES[policy_id]['model_id']
+                        for meta_rule_id in self.__MODELS[model_id]["meta_rules"]:
+                            for container_id, container_value in self.get_containers_from_keystone_project_id(
+                                keystone_project_id,
+                                meta_rule_id
+                            ):
+                                _raw = requests.get("{}/pods/{}".format(
+                                    self.orchestrator_url, container_value["name"])
+                                )
+                                LOG.debug("_raw={}".format(_raw.text))
+                                container_ids.append(
+                                    {
+                                        "container_id": container_value["name"],
+                                        "genre": container_value["genre"],
+                                        "policy_id": policy_id,
+                                        "meta_rule_id": meta_rule_id,
+                                        "hostname": container_value["name"],
+                                        "hostip": "127.0.0.1",
+                                        "port": container_value["port"],
+                                    }
+                                )
+        self.__CONTAINER_CHAINING[keystone_project_id] = container_ids
+
diff --git a/python_moonutilities/python_moonutilities/configuration.py b/python_moonutilities/python_moonutilities/configuration.py
new file mode 100644
index 00000000..f0ef74a6
--- /dev/null
+++ b/python_moonutilities/python_moonutilities/configuration.py
@@ -0,0 +1,114 @@
+# Copyright 2015 Open Platform for NFV Project, Inc. and its contributors
+# This software is distributed under the terms and conditions of the 'Apache-2.0'
+# license which can be found in the file 'LICENSE' in this package distribution
+# or at 'http://www.apache.org/licenses/LICENSE-2.0'.
+
+
+import base64
+import json
+import requests
+import logging
+import logging.config
+from python_moonutilities import exceptions
+
+LOG = logging.getLogger("moon.utilities")
+
+CONSUL_HOST = "consul"
+CONSUL_PORT = "8500"
+
+DATABASE = "database"
+KEYSTONE = "keystone"
+DOCKER = "docker"
+COMPONENTS = "components"
+
+
+def init_logging():
+    config = get_configuration("logging")
+    logging.config.dictConfig(config['logging'])
+
+
+def increment_port():
+    components_port_start = int(get_configuration("components_port_start")['components_port_start'])
+    components_port_start += 1
+    url = "http://{}:{}/v1/kv/components_port_start".format(CONSUL_HOST, CONSUL_PORT)
+    req = requests.put(url, json=str(components_port_start))
+    if req.status_code != 200:
+        LOG.info("url={}".format(url))
+        raise exceptions.ConsulError
+    return components_port_start
+
+
+def get_configuration(key):
+    url = "http://{}:{}/v1/kv/{}".format(CONSUL_HOST, CONSUL_PORT, key)
+    req = requests.get(url)
+    if req.status_code != 200:
+        LOG.error("url={}".format(url))
+        raise exceptions.ConsulComponentNotFound("error={}: {}".format(req.status_code, req.text))
+    data = req.json()
+    if len(data) == 1:
+        data = data[0]
+        return {data["Key"]: json.loads(base64.b64decode(data["Value"]).decode("utf-8"))}
+    else:
+        return [
+            {item["Key"]: json.loads(base64.b64decode(item["Value"]).decode("utf-8"))}
+            for item in data
+        ]
+
+
+def add_component(name, uuid, port=None, bind="127.0.0.1", keystone_id="", extra=None, container=None):
+    data = {
+        "hostname": name,
+        "keystone_id": keystone_id,
+        "bind": bind,
+        "port": port,
+        "extra": extra,
+        "container": container
+    }
+    req = requests.put(
+        "http://{}:{}/v1/kv/components/{}".format(CONSUL_HOST, CONSUL_PORT, uuid),
+        headers={"content-type": "application/json"},
+        json=data
+    )
+    if req.status_code != 200:
+        LOG.debug("url={}".format("http://{}:{}/v1/kv/components/{}".format(CONSUL_HOST, CONSUL_PORT, uuid)))
+        LOG.debug("data={}".format(data))
+        raise exceptions.ConsulError
+    LOG.info("Add component {}".format(req.text))
+    return get_configuration("components/"+uuid)
+
+
+def get_plugins():
+    url = "http://{}:{}/v1/kv/plugins?recurse=true".format(CONSUL_HOST, CONSUL_PORT)
+    req = requests.get(url)
+    if req.status_code != 200:
+        LOG.info("url={}".format(url))
+        raise exceptions.ConsulError
+    data = req.json()
+    if len(data) == 1:
+        data = data[0]
+        return {data["Key"].replace("plugins/", ""): json.loads(base64.b64decode(data["Value"]).decode("utf-8"))}
+    else:
+        return {
+            item["Key"].replace("plugins/", ""): json.loads(base64.b64decode(item["Value"]).decode("utf-8"))
+            for item in data
+        }
+
+
+def get_components():
+    url = "http://{}:{}/v1/kv/components?recurse=true".format(CONSUL_HOST, CONSUL_PORT)
+    req = requests.get(url)
+    if req.status_code != 200:
+        LOG.info("url={}".format(url))
+        raise exceptions.ConsulError
+    data = req.json()
+    if len(data) == 1:
+        data = data[0]
+        return {data["Key"].replace("components/", ""): json.loads(base64.b64decode(data["Value"]).decode("utf-8"))}
+    else:
+        return {
+            item["Key"].replace("components/", ""): json.loads(base64.b64decode(item["Value"]).decode("utf-8"))
+            for item in data
+        }
+
+
+init_logging()
diff --git a/python_moonutilities/python_moonutilities/exceptions.py b/python_moonutilities/python_moonutilities/exceptions.py
new file mode 100644
index 00000000..5bbab2be
--- /dev/null
+++ b/python_moonutilities/python_moonutilities/exceptions.py
@@ -0,0 +1,522 @@
+# Copyright 2015 Open Platform for NFV Project, Inc. and its contributors
+# This software is distributed under the terms and conditions of the 'Apache-2.0'
+# license which can be found in the file 'LICENSE' in this package distribution
+# or at 'http://www.apache.org/licenses/LICENSE-2.0'.
+
+from oslo_log import log as logging
+from werkzeug.exceptions import HTTPException
+
+LOG = logging.getLogger("moon.utilities.exceptions")
+_ = str
+
+
+class MoonErrorMetaClass(type):
+
+    def __init__(cls, name, bases, dct):
+        super(MoonErrorMetaClass, cls).__init__(name, bases, dct)
+        cls.hierarchy += "/"+str(name)
+
+
+class MoonError(HTTPException):
+    __metaclass__ = MoonErrorMetaClass
+    hierarchy = ""
+    description = _("There is an error requesting the Moon platform.")
+    code = 400
+    title = 'Moon Error'
+    logger = "ERROR"
+
+    def __init__(self, message="", status_code=None, payload=""):
+        if message:
+            self.description = message
+        if status_code:
+            self.code = status_code
+        self.payload = payload
+        super(MoonError, self).__init__()
+
+    def __str__(self):
+        return "{}: {}".format(self.code, self.title)
+
+    def __del__(self):
+        message = "{} ({}) {}".format(self.hierarchy, self.description, self.payload)
+        if self.logger == "ERROR":
+            try:
+                LOG.error(message)
+            except AttributeError:
+                LOG.error(message)
+        elif self.logger == "WARNING":
+            try:
+                LOG.warning(message)
+            except AttributeError:
+                LOG.warning(message)
+        elif self.logger == "CRITICAL":
+            try:
+                LOG.critical(message)
+            except AttributeError:
+                LOG.critical(message)
+        elif self.logger == "AUTHZ":
+            try:
+                LOG.authz(self.hierarchy)
+                LOG.error(message)
+            except AttributeError:
+                LOG.error(message)
+        else:
+            try:
+                LOG.info(message)
+            except AttributeError:
+                LOG.info(message)
+
+    # def to_dict(self):
+    #     rv = dict(self.payload or ())
+    #     rv['message'] = "{} ({})".format(self.hierarchy, self.description)
+    #     rv['title'] = self.title
+    #     rv['code'] = self.code
+    #     return rv
+
+
+# Exceptions for Tenant
+
+class TenantException(MoonError):
+    description = _("There is an error requesting this tenant.")
+    code = 400
+    title = 'Tenant Error'
+    logger = "ERROR"
+
+
+class TenantUnknown(TenantException):
+    description = _("The tenant is unknown.")
+    code = 400
+    title = 'Tenant Unknown'
+    logger = "ERROR"
+
+
+class TenantAddedNameExisting(TenantException):
+    description = _("The tenant name is existing.")
+    code = 400
+    title = 'Added Tenant Name Existing'
+    logger = "ERROR"
+
+
+class TenantNoIntraExtension(TenantException):
+    description = _("The tenant has not intra_extension.")
+    code = 400
+    title = 'Tenant No Intra_Extension'
+    logger = "ERROR"
+
+
+class TenantNoIntraAuthzExtension(TenantNoIntraExtension):
+    description = _("The tenant has not intra_admin_extension.")
+    code = 400
+    title = 'Tenant No Intra_Admin_Extension'
+    logger = "ERROR"
+
+# Exceptions for IntraExtension
+
+
+class IntraExtensionException(MoonError):
+    description = _("There is an error requesting this IntraExtension.")
+    code = 400
+    title = 'Extension Error'
+
+
+class IntraExtensionUnknown(IntraExtensionException):
+    description = _("The intra_extension is unknown.")
+    code = 400
+    title = 'Intra Extension Unknown'
+    logger = "Error"
+
+
+class ModelUnknown(MoonError):
+    description = _("The model is unknown.")
+    code = 400
+    title = 'Model Unknown'
+    logger = "Error"
+
+
+class ModelExisting(MoonError):
+    description = _("The model already exists.")
+    code = 409
+    title = 'Model Error'
+    logger = "Error"
+
+
+# Authz exceptions
+
+class AuthzException(MoonError):
+    description = _("There is an authorization error requesting this IntraExtension.")
+    code = 403
+    title = 'Authz Exception'
+    logger = "AUTHZ"
+
+
+# Auth exceptions
+
+class AuthException(MoonError):
+    description = _("There is an authentication error requesting this API. "
+                    "You must provide a valid token from Keystone.")
+    code = 401
+    title = 'Auth Exception'
+    logger = "AUTHZ"
+
+
+# Admin exceptions
+
+class AdminException(MoonError):
+    description = _("There is an error requesting this Authz IntraExtension.")
+    code = 400
+    title = 'Authz Exception'
+    logger = "AUTHZ"
+
+
+class AdminMetaData(AdminException):
+    code = 400
+    title = 'Metadata Exception'
+
+
+class AdminPerimeter(AdminException):
+    code = 400
+    title = 'Perimeter Exception'
+
+
+class AdminScope(AdminException):
+    code = 400
+    title = 'Scope Exception'
+
+
+class AdminAssignment(AdminException):
+    code = 400
+    title = 'Assignment Exception'
+
+
+class AdminMetaRule(AdminException):
+    code = 400
+    title = 'Aggregation Algorithm Exception'
+
+
+class AdminRule(AdminException):
+    code = 400
+    title = 'Rule Exception'
+
+
+class SubjectCategoryNameExisting(AdminMetaData):
+    description = _("The given subject category name already exists.")
+    code = 409
+    title = 'Subject Category Name Existing'
+    logger = "ERROR"
+
+
+class SubjectCategoryExisting(AdminMetaData):
+    description = _("The given subject category already exists.")
+    code = 409
+    title = 'Subject Category Existing'
+    logger = "ERROR"
+
+
+class ObjectCategoryNameExisting(AdminMetaData):
+    description = _("The given object category name already exists.")
+    code = 409
+    title = 'Object Category Name Existing'
+    logger = "ERROR"
+
+
+class ObjectCategoryExisting(AdminMetaData):
+    description = _("The given object category already exists.")
+    code = 409
+    title = 'Object Category Existing'
+    logger = "ERROR"
+
+
+class ActionCategoryNameExisting(AdminMetaData):
+    description = _("The given action category name already exists.")
+    code = 409
+    title = 'Action Category Name Existing'
+    logger = "ERROR"
+
+
+class ActionCategoryExisting(AdminMetaData):
+    description = _("The given action category already exists.")
+    code = 409
+    title = 'Action Category Existing'
+    logger = "ERROR"
+
+
+class SubjectCategoryUnknown(AdminMetaData):
+    description = _("The given subject category is unknown.")
+    code = 400
+    title = 'Subject Category Unknown'
+    logger = "ERROR"
+
+
+class ObjectCategoryUnknown(AdminMetaData):
+    description = _("The given object category is unknown.")
+    code = 400
+    title = 'Object Category Unknown'
+    logger = "ERROR"
+
+
+class ActionCategoryUnknown(AdminMetaData):
+    description = _("The given action category is unknown.")
+    code = 400
+    title = 'Action Category Unknown'
+    logger = "ERROR"
+
+
+class SubjectUnknown(AdminPerimeter):
+    description = _("The given subject is unknown.")
+    code = 400
+    title = 'Subject Unknown'
+    logger = "ERROR"
+
+
+class ObjectUnknown(AdminPerimeter):
+    description = _("The given object is unknown.")
+    code = 400
+    title = 'Object Unknown'
+    logger = "ERROR"
+
+
+class ActionUnknown(AdminPerimeter):
+    description = _("The given action is unknown.")
+    code = 400
+    title = 'Action Unknown'
+    logger = "ERROR"
+
+
+class SubjectNameExisting(AdminPerimeter):
+    description = _("The given subject name is existing.")
+    code = 400
+    title = 'Subject Name Existing'
+    logger = "ERROR"
+
+
+class ObjectNameExisting(AdminPerimeter):
+    description = _("The given object name is existing.")
+    code = 400
+    title = 'Object Name Existing'
+    logger = "ERROR"
+
+
+class ActionNameExisting(AdminPerimeter):
+    description = _("The given action name is existing.")
+    code = 400
+    title = 'Action Name Existing'
+    logger = "ERROR"
+
+
+class ObjectsWriteNoAuthorized(AdminPerimeter):
+    description = _("The modification on Objects is not authorized.")
+    code = 400
+    title = 'Objects Write No Authorized'
+    logger = "AUTHZ"
+
+
+class ActionsWriteNoAuthorized(AdminPerimeter):
+    description = _("The modification on Actions is not authorized.")
+    code = 400
+    title = 'Actions Write No Authorized'
+    logger = "AUTHZ"
+
+
+class SubjectScopeUnknown(AdminScope):
+    description = _("The given subject scope is unknown.")
+    code = 400
+    title = 'Subject Scope Unknown'
+    logger = "ERROR"
+
+
+class ObjectScopeUnknown(AdminScope):
+    description = _("The given object scope is unknown.")
+    code = 400
+    title = 'Object Scope Unknown'
+    logger = "ERROR"
+
+
+class ActionScopeUnknown(AdminScope):
+    description = _("The given action scope is unknown.")
+    code = 400
+    title = 'Action Scope Unknown'
+    logger = "ERROR"
+
+
+class SubjectScopeNameExisting(AdminScope):
+    description = _("The given subject scope name is existing.")
+    code = 400
+    title = 'Subject Scope Name Existing'
+    logger = "ERROR"
+
+
+class ObjectScopeNameExisting(AdminScope):
+    description = _("The given object scope name is existing.")
+    code = 400
+    title = 'Object Scope Name Existing'
+    logger = "ERROR"
+
+
+class ActionScopeNameExisting(AdminScope):
+    description = _("The given action scope name is existing.")
+    code = 400
+    title = 'Action Scope Name Existing'
+    logger = "ERROR"
+
+
+class SubjectAssignmentUnknown(AdminAssignment):
+    description = _("The given subject assignment value is unknown.")
+    code = 400
+    title = 'Subject Assignment Unknown'
+    logger = "ERROR"
+
+
+class ObjectAssignmentUnknown(AdminAssignment):
+    description = _("The given object assignment value is unknown.")
+    code = 400
+    title = 'Object Assignment Unknown'
+    logger = "ERROR"
+
+
+class ActionAssignmentUnknown(AdminAssignment):
+    description = _("The given action assignment value is unknown.")
+    code = 400
+    title = 'Action Assignment Unknown'
+    logger = "ERROR"
+
+
+class SubjectAssignmentExisting(AdminAssignment):
+    description = _("The given subject assignment value is existing.")
+    code = 400
+    title = 'Subject Assignment Existing'
+    logger = "ERROR"
+
+
+class ObjectAssignmentExisting(AdminAssignment):
+    description = _("The given object assignment value is existing.")
+    code = 400
+    title = 'Object Assignment Existing'
+    logger = "ERROR"
+
+
+class ActionAssignmentExisting(AdminAssignment):
+    description = _("The given action assignment value is existing.")
+    code = 400
+    title = 'Action Assignment Existing'
+    logger = "ERROR"
+
+
+class AggregationAlgorithmNotExisting(AdminMetaRule):
+    description = _("The given aggregation algorithm is not existing.")
+    code = 400
+    title = 'Aggregation Algorithm Not Existing'
+    logger = "ERROR"
+
+
+class AggregationAlgorithmUnknown(AdminMetaRule):
+    description = _("The given aggregation algorithm is unknown.")
+    code = 400
+    title = 'Aggregation Algorithm Unknown'
+    logger = "ERROR"
+
+
+class SubMetaRuleAlgorithmNotExisting(AdminMetaRule):
+    description = _("The given sub_meta_rule algorithm is unknown.")
+    code = 400
+    title = 'Sub_meta_rule Algorithm Unknown'
+    logger = "ERROR"
+
+
+class MetaRuleUnknown(AdminMetaRule):
+    description = _("The given sub meta rule is unknown.")
+    code = 400
+    title = 'Sub Meta Rule Unknown'
+    logger = "ERROR"
+
+
+class SubMetaRuleNameExisting(AdminMetaRule):
+    description = _("The sub meta rule name already exists.")
+    code = 400
+    title = 'Sub Meta Rule Name Existing'
+    logger = "ERROR"
+
+
+class MetaRuleExisting(AdminMetaRule):
+    description = _("The sub meta rule already exists.")
+    code = 400
+    title = 'Sub Meta Rule Existing'
+    logger = "ERROR"
+
+
+class RuleExisting(AdminRule):
+    description = _("The rule already exists.")
+    code = 400
+    title = 'Rule Existing'
+    logger = "ERROR"
+
+
+class RuleUnknown(AdminRule):
+    description = _("The rule for that request doesn't exist.")
+    code = 400
+    title = 'Rule Unknown'
+    logger = "ERROR"
+
+
+# Keystone exceptions
+
+
+class KeystoneError(MoonError):
+    description = _("There is an error connecting to Keystone.")
+    code = 400
+    title = 'Keystone error'
+    logger = "ERROR"
+
+
+class KeystoneProjectError(KeystoneError):
+    description = _("There is an error retrieving projects from the Keystone service.")
+    code = 400
+    title = 'Keystone project error'
+    logger = "ERROR"
+
+
+class KeystoneUserError(KeystoneError):
+    description = _("There is an error retrieving users from the Keystone service.")
+    code = 400
+    title = 'Keystone user error'
+    logger = "ERROR"
+
+
+class KeystoneUserConflict(KeystoneUserError):
+    description = _("A user with that name already exist.")
+    code = 400
+    title = 'Keystone user error'
+    logger = "ERROR"
+
+
+# Consul exceptions
+
+
+class ConsulError(MoonError):
+    description = _("There is an error connecting to Consul.")
+    code = 400
+    title = 'Consul error'
+    logger = "ERROR"
+
+
+class ConsulComponentNotFound(ConsulError):
+    description = _("The component do not exist in Consul database.")
+    code = 500
+    title = 'Consul error'
+    logger = "WARNING"
+
+
+# Containers exceptions
+
+
+class DockerError(MoonError):
+    description = _("There is an error with Docker.")
+    code = 400
+    title = 'Docker error'
+    logger = "ERROR"
+
+
+class ContainerMissing(DockerError):
+    description = _("Some containers are missing.")
+    code = 400
+    title = 'Container missing'
+    logger = "ERROR"
+
diff --git a/python_moonutilities/python_moonutilities/misc.py b/python_moonutilities/python_moonutilities/misc.py
new file mode 100644
index 00000000..b83523c3
--- /dev/null
+++ b/python_moonutilities/python_moonutilities/misc.py
@@ -0,0 +1,142 @@
+# Copyright 2015 Open Platform for NFV Project, Inc. and its contributors
+# This software is distributed under the terms and conditions of the 'Apache-2.0'
+# license which can be found in the file 'LICENSE' in this package distribution
+# or at 'http://www.apache.org/licenses/LICENSE-2.0'.
+
+
+import logging
+import random
+
+LOG = logging.getLogger(__name__)
+
+
+def get_uuid_from_name(name, elements, **kwargs):
+    for element in elements:
+        if type(elements[element]) is dict and elements[element].get('name') == name:
+            if kwargs:
+                for args in kwargs:
+                    if elements[element].get(args) != kwargs[args]:
+                        return
+                else:
+                    return element
+            else:
+                return element
+
+
+def get_name_from_uuid(uuid, elements, **kwargs):
+    for element in elements:
+        if element == uuid:
+            if kwargs:
+                for args in kwargs:
+                    if elements[element].get(args) != kwargs[args]:
+                        return
+                else:
+                    return elements[element].get('name')
+            else:
+                return elements[element].get('name')
+
+
+def get_random_name():
+    _list = (
+        "windy",
+        "vengeful",
+        "precious",
+        "vivacious",
+        "quiet",
+        "confused",
+        "exultant",
+        "impossible",
+        "thick",
+        "obsolete",
+        "piquant",
+        "fanatical",
+        "tame",
+        "perfect",
+        "animated",
+        "dark",
+        "stimulating",
+        "drunk",
+        "depressed",
+        "fumbling",
+        "like",
+        "undesirable",
+        "spurious",
+        "subsequent",
+        "spiteful",
+        "last",
+        "stale",
+        "hulking",
+        "giddy",
+        "minor",
+        "careful",
+        "possessive",
+        "gullible",
+        "fragile",
+        "divergent",
+        "ill-informed",
+        "false",
+        "jumpy",
+        "damaged",
+        "likeable",
+        "volatile",
+        "handsomely",
+        "wet",
+        "long-term",
+        "pretty",
+        "taboo",
+        "normal",
+        "magnificent",
+        "nutty",
+        "puzzling",
+        "small",
+        "kind",
+        "devilish",
+        "chubby",
+        "paltry",
+        "cultured",
+        "old",
+        "defective",
+        "hanging",
+        "innocent",
+        "jagged",
+        "economic",
+        "good",
+        "sulky",
+        "real",
+        "bent",
+        "shut",
+        "furry",
+        "terrific",
+        "hollow",
+        "terrible",
+        "mammoth",
+        "pleasant",
+        "scared",
+        "obnoxious",
+        "absorbing",
+        "imported",
+        "infamous",
+        "grieving",
+        "ill-fated",
+        "mighty",
+        "handy",
+        "comfortable",
+        "astonishing",
+        "brown",
+        "assorted",
+        "wrong",
+        "unsightly",
+        "spooky",
+        "delightful",
+        "acid",
+        "inconclusive",
+        "mere",
+        "careless",
+        "historical",
+        "flashy",
+        "squealing",
+        "quarrelsome",
+        "empty",
+        "long",
+    )
+    return random.choice(_list)
diff --git a/python_moonutilities/python_moonutilities/security_functions.py b/python_moonutilities/python_moonutilities/security_functions.py
new file mode 100644
index 00000000..6d9307fe
--- /dev/null
+++ b/python_moonutilities/python_moonutilities/security_functions.py
@@ -0,0 +1,531 @@
+# Copyright 2015 Open Platform for NFV Project, Inc. and its contributors
+# This software is distributed under the terms and conditions of the 'Apache-2.0'
+# license which can be found in the file 'LICENSE' in this package distribution
+# or at 'http://www.apache.org/licenses/LICENSE-2.0'.
+
+
+import copy
+import re
+import os
+import types
+import requests
+import time
+from functools import wraps
+from flask import request
+import logging
+from python_moonutilities import exceptions, configuration
+
+LOG = logging.getLogger("moon.utilities." + __name__)
+
+keystone_config = configuration.get_configuration("openstack/keystone")["openstack/keystone"]
+TOKENS = {}
+__targets = {}
+
+
+def filter_input(func_or_str):
+
+    def __filter(string):
+        if string and type(string) is str:
+            return "".join(re.findall("[\w\- +]*", string))
+        return string
+
+    def __filter_dict(arg):
+        result = dict()
+        for key in arg.keys():
+            if key == "email":
+                result["email"] = __filter_email(arg[key])
+            elif key == "password":
+                result["password"] = arg['password']
+            else:
+                result[key] = __filter(arg[key])
+        return result
+
+    def __filter_email(string):
+        if string and type(string) is str:
+            return "".join(re.findall("[\w@\._\- +]*", string))
+        return string
+
+    def wrapped(*args, **kwargs):
+        _args = []
+        for arg in args:
+            if isinstance(arg, str):
+                arg = __filter(arg)
+            elif isinstance(arg, list):
+                arg = [__filter(item) for item in arg]
+            elif isinstance(arg, tuple):
+                arg = (__filter(item) for item in arg)
+            elif isinstance(arg, dict):
+                arg = __filter_dict(arg)
+            _args.append(arg)
+        for arg in kwargs:
+            if type(kwargs[arg]) is str:
+                kwargs[arg] = __filter(kwargs[arg])
+            if isinstance(kwargs[arg], str):
+                kwargs[arg] = __filter(kwargs[arg])
+            elif isinstance(kwargs[arg], list):
+                kwargs[arg] = [__filter(item) for item in kwargs[arg]]
+            elif isinstance(kwargs[arg], tuple):
+                kwargs[arg] = (__filter(item) for item in kwargs[arg])
+            elif isinstance(kwargs[arg], dict):
+                kwargs[arg] = __filter_dict(kwargs[arg])
+        return func_or_str(*_args, **kwargs)
+
+    if isinstance(func_or_str, str):
+        return __filter(func_or_str)
+    if isinstance(func_or_str, list):
+        return [__filter(item) for item in func_or_str]
+    if isinstance(func_or_str, tuple):
+        return (__filter(item) for item in func_or_str)
+    if isinstance(func_or_str, dict):
+        return __filter_dict(func_or_str)
+    if isinstance(func_or_str, types.FunctionType):
+        return wrapped
+    return None
+
+
+def enforce(action_names, object_name, **extra):
+    """Fake version of the enforce decorator"""
+    def wrapper_func(func):
+        def wrapper_args(*args, **kwargs):
+            # LOG.info("kwargs={}".format(kwargs))
+            # kwargs['user_id'] = kwargs.pop('user_id', "admin")
+            # LOG.info("Calling enforce on {} with args={} kwargs={}".format(func.__name__, args, kwargs))
+            return func(*args, **kwargs)
+        return wrapper_args
+    return wrapper_func
+
+
+def login(user=None, password=None, domain=None, project=None, url=None):
+    start_time = time.time()
+    if not user:
+        user = keystone_config['user']
+    if not password:
+        password = keystone_config['password']
+    if not domain:
+        domain = keystone_config['domain']
+    if not project:
+        project = keystone_config['project']
+    if not url:
+        url = keystone_config['url']
+    headers = {
+        "Content-Type": "application/json"
+    }
+    data_auth = {
+        "auth": {
+            "identity": {
+                "methods": [
+                    "password"
+                ],
+                "password": {
+                    "user": {
+                        "domain": {
+                            "id": domain
+                        },
+                        "name": user,
+                        "password": password
+                    }
+                }
+            },
+            "scope": {
+                "project": {
+                    "domain": {
+                        "id": domain
+                    },
+                    "name": project
+                }
+            }
+        }
+    }
+
+    while True:
+        req = requests.post("{}/auth/tokens".format(url),
+                            json=data_auth, headers=headers,
+                            verify=keystone_config['certificate'])
+
+        if req.status_code in (200, 201, 204):
+            headers['X-Auth-Token'] = req.headers['X-Subject-Token']
+            return headers
+        LOG.warning("Waiting for Keystone...")
+        if time.time() - start_time == 100:
+            LOG.error(req.text)
+            raise exceptions.KeystoneError
+        time.sleep(5)
+
+
+def logout(headers, url=None):
+    if not url:
+        url = keystone_config['url']
+    headers['X-Subject-Token'] = headers['X-Auth-Token']
+    req = requests.delete("{}/auth/tokens".format(url), headers=headers, verify=keystone_config['certificate'])
+    if req.status_code in (200, 201, 204):
+        return
+    LOG.error(req.text)
+    raise exceptions.KeystoneError
+
+
+class Context:
+
+    def __init__(self, init_context, cache):
+        self.cache = cache
+        self.__keystone_project_id = init_context.get("project_id")
+        self.__pdp_id = None
+        self.__pdp_value = None
+        for _pdp_key, _pdp_value in self.cache.pdp.items():
+            if _pdp_value["keystone_project_id"] == self.__keystone_project_id:
+                self.__pdp_id = _pdp_key
+                self.__pdp_value = copy.deepcopy(_pdp_value)
+                break
+        if not self.__pdp_value:
+            raise exceptions.AuthzException(
+                "Cannot create context for authz "
+                "with Keystone project ID {}".format(
+                    self.__keystone_project_id
+            ))
+        self.__subject = init_context.get("subject_name")
+        self.__object = init_context.get("object_name")
+        self.__action = init_context.get("action_name")
+        self.__current_request = None
+        self.__request_id = init_context.get("req_id")
+        self.__cookie = init_context.get("cookie")
+        self.__manager_url = init_context.get("manager_url")
+        self.__interface_name = init_context.get("interface_name")
+        self.__index = -1
+        # self.__init_initial_request()
+        self.__headers = []
+        policies = self.cache.policies
+        models = self.cache.models
+        for policy_id in self.__pdp_value["security_pipeline"]:
+            model_id = policies[policy_id]["model_id"]
+            for meta_rule in models[model_id]["meta_rules"]:
+                self.__headers.append(meta_rule)
+        self.__meta_rules = self.cache.meta_rules
+        self.__pdp_set = {}
+        # self.__init_pdp_set()
+
+    def delete_cache(self):
+        self.cache = {}
+
+    def set_cache(self, cache):
+        self.cache = cache
+
+    def increment_index(self):
+        self.__index += 1
+        self.__init_current_request()
+        self.__init_pdp_set()
+
+    @property
+    def current_state(self):
+        return self.__pdp_set[self.__headers[self.__index]]['effect']
+
+    @current_state.setter
+    def current_state(self, state):
+        if state not in ("grant", "deny", "passed"):
+            state = "passed"
+        self.__pdp_set[self.__headers[self.__index]]['effect'] = state
+
+    @current_state.deleter
+    def current_state(self):
+        self.__pdp_set[self.__headers[self.__index]]['effect'] = "unset"
+
+    @property
+    def current_policy_id(self):
+        return self.__pdp_value["security_pipeline"][self.__index]
+
+    @current_policy_id.setter
+    def current_policy_id(self, value):
+        pass
+
+    @current_policy_id.deleter
+    def current_policy_id(self):
+        pass
+
+    def __init_current_request(self):
+        self.__subject = self.cache.get_subject(
+            self.__pdp_value["security_pipeline"][self.__index],
+            self.__subject)
+        self.__object = self.cache.get_object(
+            self.__pdp_value["security_pipeline"][self.__index],
+            self.__object)
+        self.__action = self.cache.get_action(
+            self.__pdp_value["security_pipeline"][self.__index],
+            self.__action)
+        self.__current_request = dict(self.initial_request)
+
+    def __init_pdp_set(self):
+        for header in self.__headers:
+            self.__pdp_set[header] = dict()
+            self.__pdp_set[header]["meta_rules"] = self.__meta_rules[header]
+            self.__pdp_set[header]["target"] = self.__add_target(header)
+            self.__pdp_set[header]["effect"] = "unset"
+        self.__pdp_set["effect"] = "deny"
+
+    # def update_target(self, context):
+    #     # result = dict()
+    #     current_request = context['current_request']
+    #     _subject = current_request.get("subject")
+    #     _object = current_request.get("object")
+    #     _action = current_request.get("action")
+    #     meta_rule_id = context['headers'][context['index']]
+    #     policy_id = self.cache.get_policy_from_meta_rules(meta_rule_id)
+    #     meta_rules = self.cache.meta_rules()
+    #     # for meta_rule_id in meta_rules:
+    #     for sub_cat in meta_rules[meta_rule_id]['subject_categories']:
+    #         if sub_cat not in context["pdp_set"][meta_rule_id]["target"]:
+    #             context["pdp_set"][meta_rule_id]["target"][sub_cat] = []
+    #         for assign in self.cache.get_subject_assignments(policy_id, _subject, sub_cat).values():
+    #             for assign in assign["assignments"]:
+    #                 if assign not in context["pdp_set"][meta_rule_id]["target"][sub_cat]:
+    #                     context["pdp_set"][meta_rule_id]["target"][sub_cat].append(assign)
+    #     for obj_cat in meta_rules[meta_rule_id]['object_categories']:
+    #         if obj_cat not in context["pdp_set"][meta_rule_id]["target"]:
+    #             context["pdp_set"][meta_rule_id]["target"][obj_cat] = []
+    #         for assign in self.cache.get_object_assignments(policy_id, _object, obj_cat).values():
+    #             for assign in assign["assignments"]:
+    #                 if assign not in context["pdp_set"][meta_rule_id]["target"][obj_cat]:
+    #                     context["pdp_set"][meta_rule_id]["target"][obj_cat].append(assign)
+    #     for act_cat in meta_rules[meta_rule_id]['action_categories']:
+    #         if act_cat not in context["pdp_set"][meta_rule_id]["target"]:
+    #             context["pdp_set"][meta_rule_id]["target"][act_cat] = []
+    #         for assign in self.cache.get_action_assignments(policy_id, _action, act_cat).values():
+    #             for assign in assign["assignments"]:
+    #                 if assign not in context["pdp_set"][meta_rule_id]["target"][act_cat]:
+    #                     context["pdp_set"][meta_rule_id]["target"][act_cat].append(assign)
+    #     # context["pdp_set"][meta_rule_id]["target"].update(result)
+
+    def __add_target(self, meta_rule_id):
+        """build target from meta_rule
+
+        Target is dict of categories as keys ; and the value of each category
+        will be a list of assignments
+
+        """
+        result = dict()
+        _subject = self.__current_request["subject"]
+        _object = self.__current_request["object"]
+        _action = self.__current_request["action"]
+        meta_rules = self.cache.meta_rules
+        policy_id = self.cache.get_policy_from_meta_rules(meta_rule_id)
+        for sub_cat in meta_rules[meta_rule_id]['subject_categories']:
+            if sub_cat not in result:
+                result[sub_cat] = []
+            result[sub_cat].extend(
+                self.cache.get_subject_assignments(policy_id, _subject, sub_cat))
+        for obj_cat in meta_rules[meta_rule_id]['object_categories']:
+            if obj_cat not in result:
+                result[obj_cat] = []
+            result[obj_cat].extend(
+                self.cache.get_object_assignments(policy_id, _object, obj_cat))
+        for act_cat in meta_rules[meta_rule_id]['action_categories']:
+            if act_cat not in result:
+                result[act_cat] = []
+            result[act_cat].extend(
+                self.cache.get_action_assignments(policy_id, _action, act_cat))
+        return result
+
+    def __repr__(self):
+        return """PDP ID: {id}
+current_request: {current_request}
+request_id: {request_id}
+index: {index}
+headers: {headers}
+pdp_set: {pdp_set}
+        """.format(
+            id=self.__pdp_id,
+            current_request=self.__current_request,
+            request_id=self.__request_id,
+            headers=self.__headers,
+            pdp_set=self.__pdp_set,
+            index=self.__index
+        )
+
+    def to_dict(self):
+        return {
+            "initial_request": copy.deepcopy(self.initial_request),
+            "current_request": copy.deepcopy(self.__current_request),
+            "headers": copy.deepcopy(self.__headers),
+            "index": copy.deepcopy(self.__index),
+            "pdp_set": copy.deepcopy(self.__pdp_set),
+            "request_id": copy.deepcopy(self.__request_id),
+            "manager_url": copy.deepcopy(self.__manager_url),
+            "interface_name": copy.deepcopy(self.__interface_name),
+        }
+
+    @property
+    def request_id(self):
+        return self.__request_id
+
+    @request_id.setter
+    def request_id(self, value):
+        raise Exception("You cannot update the request_id")
+
+    @request_id.deleter
+    def request_id(self):
+        raise Exception("You cannot update the request_id")
+
+    @property
+    def manager_url(self):
+        return self.__manager_url
+
+    @manager_url.setter
+    def manager_url(self, value):
+        raise Exception("You cannot update the manager_url")
+
+    @manager_url.deleter
+    def manager_url(self):
+        raise Exception("You cannot update the manager_url")
+
+    @property
+    def interface_name(self):
+        return self.__interface_name
+
+    @interface_name.setter
+    def interface_name(self, value):
+        raise Exception("You cannot update the interface_name")
+
+    @interface_name.deleter
+    def interface_name(self):
+        raise Exception("You cannot update the interface_name")
+
+    @property
+    def cookie(self):
+        return self.__cookie
+
+    @cookie.setter
+    def cookie(self, value):
+        raise Exception("You cannot update the cookie")
+
+    @cookie.deleter
+    def cookie(self):
+        raise Exception("You cannot delete the cookie")
+
+    @property
+    def initial_request(self):
+        return {
+            "subject": self.__subject,
+            "object": self.__object,
+            "action": self.__action,
+        }
+
+    @initial_request.setter
+    def initial_request(self, value):
+        raise Exception("You are not allowed to update the initial_request")
+
+    @initial_request.deleter
+    def initial_request(self):
+        raise Exception("You are not allowed to delete the initial_request")
+
+    @property
+    def current_request(self):
+        if not self.__current_request:
+            self.__current_request = copy.deepcopy(self.initial_request)
+        return self.__current_request
+
+    @current_request.setter
+    def current_request(self, value):
+        self.__current_request = copy.deepcopy(value)
+        # Note (asteroide): if the current request is modified,
+        # we must update the PDP Set.
+        self.__init_pdp_set()
+
+    @current_request.deleter
+    def current_request(self):
+        self.__current_request = {}
+        self.__pdp_set = {}
+
+    @property
+    def headers(self):
+        return self.__headers
+
+    @headers.setter
+    def headers(self, headers):
+        self.__headers = headers
+
+    @headers.deleter
+    def headers(self):
+        self.__headers = list()
+
+    @property
+    def index(self):
+        return self.__index
+
+    @index.setter
+    def index(self, index):
+        self.__index += 1
+
+    @index.deleter
+    def index(self):
+        self.__index = -1
+
+    @property
+    def pdp_set(self):
+        return self.__pdp_set
+
+    @pdp_set.setter
+    def pdp_set(self, value):
+        raise Exception("You are not allowed to modify the pdp_set")
+
+    @pdp_set.deleter
+    def pdp_set(self):
+        self.__pdp_set = {}
+
+
+def check_token(token, url=None):
+    _verify = False
+    if keystone_config['certificate']:
+        _verify = keystone_config['certificate']
+    try:
+        os.environ.pop("http_proxy")
+        os.environ.pop("https_proxy")
+    except KeyError:
+        pass
+    if not url:
+        url = keystone_config['url']
+    headers = {
+        "Content-Type": "application/json",
+        'X-Subject-Token': token,
+        'X-Auth-Token': token,
+    }
+    if not keystone_config['check_token']:
+        # TODO (asteroide): must send the admin id
+        return "admin" if not token else token
+    elif keystone_config['check_token'].lower() in ("false", "no", "n"):
+        # TODO (asteroide): must send the admin id
+        return "admin" if not token else token
+    if keystone_config['check_token'].lower() in ("yes", "y", "true"):
+        if token in TOKENS:
+            delta = time.mktime(TOKENS[token]["expires_at"]) - time.mktime(time.gmtime())
+            if delta > 0:
+                return TOKENS[token]["user"]
+            raise exceptions.KeystoneError
+        else:
+            req = requests.get("{}/auth/tokens".format(url), headers=headers, verify=_verify)
+            if req.status_code in (200, 201):
+                # Note (asteroide): the time stamps is not in ISO 8601, so it is necessary to delete
+                # characters after the dot
+                token_time = req.json().get("token").get("expires_at").split(".")
+                TOKENS[token] = dict()
+                TOKENS[token]["expires_at"] = time.strptime(token_time[0], "%Y-%m-%dT%H:%M:%S")
+                TOKENS[token]["user"] = req.json().get("token").get("user").get("id")
+                return TOKENS[token]["user"]
+            LOG.error("{} - {}".format(req.status_code, req.text))
+            raise exceptions.KeystoneError
+    elif keystone_config['check_token'].lower() == "strict":
+        req = requests.head("{}/auth/tokens".format(url), headers=headers, verify=_verify)
+        if req.status_code in (200, 201):
+            return token
+        LOG.error("{} - {}".format(req.status_code, req.text))
+        raise exceptions.KeystoneError
+    raise exceptions.KeystoneError
+
+
+def check_auth(function):
+    @wraps(function)
+    def wrapper(*args, **kwargs):
+        token = request.headers.get('X-Auth-Token')
+        token = check_token(token)
+        if not token:
+            raise exceptions.AuthException
+        user_id = kwargs.pop("user_id", token)
+        result = function(*args, **kwargs, user_id=user_id)
+        return result
+    return wrapper
diff --git a/python_moonutilities/requirements.txt b/python_moonutilities/requirements.txt
new file mode 100644
index 00000000..5b80e5f2
--- /dev/null
+++ b/python_moonutilities/requirements.txt
@@ -0,0 +1,3 @@
+werkzeug
+flask
+requests
\ No newline at end of file
diff --git a/python_moonutilities/setup.py b/python_moonutilities/setup.py
new file mode 100644
index 00000000..4a2eef5d
--- /dev/null
+++ b/python_moonutilities/setup.py
@@ -0,0 +1,42 @@
+# Copyright 2015 Open Platform for NFV Project, Inc. and its contributors
+# This software is distributed under the terms and conditions of the 'Apache-2.0'
+# license which can be found in the file 'LICENSE' in this package distribution
+# or at 'http://www.apache.org/licenses/LICENSE-2.0'.
+
+from setuptools import setup, find_packages
+import python_moonutilities
+
+with open('requirements.txt') as f:
+    required = f.read().splitlines()
+
+setup(
+
+    name='python-moonutilities',
+
+    version=python_moonutilities.__version__,
+
+    packages=find_packages(),
+
+    author='Thomas Duval',
+
+    author_email='thomas.duval@orange.com',
+
+    description='Some utilities for all the Moon components',
+
+    long_description=open('README.md').read(),
+
+    install_requires=required,
+
+    include_package_data=True,
+
+    url='https://git.opnfv.org/cgit/moon',
+
+    classifiers=[
+        'Programming Language :: Python :: 3',
+        'Development Status :: 1 - Planning',
+        'License :: OSI Approved',
+        'Natural Language :: English',
+        'Operating System :: OS Independent',
+    ],
+
+)
diff --git a/python_moonutilities/tests/unit_python/conftest.py b/python_moonutilities/tests/unit_python/conftest.py
new file mode 100644
index 00000000..7217586a
--- /dev/null
+++ b/python_moonutilities/tests/unit_python/conftest.py
@@ -0,0 +1,17 @@
+import pytest
+import requests_mock
+import mock_components
+import mock_keystone
+import mock_cache
+
+
+@pytest.fixture(autouse=True)
+def no_requests(monkeypatch):
+    """ Modify the response from Requests module
+    """
+    with requests_mock.Mocker(real_http=True) as m:
+        mock_components.register_components(m)
+        mock_keystone.register_keystone(m)
+        mock_cache.register_cache(m)
+        print("End registering URI")
+        yield m
\ No newline at end of file
diff --git a/python_moonutilities/tests/unit_python/mock_cache.py b/python_moonutilities/tests/unit_python/mock_cache.py
new file mode 100644
index 00000000..b2b287a9
--- /dev/null
+++ b/python_moonutilities/tests/unit_python/mock_cache.py
@@ -0,0 +1,321 @@
+from utilities import CONF
+
+pdp_mock = {
+    "pdp_id1": {
+        "name": "...",
+        "security_pipeline": ["policy_id_1", "policy_id_2"],
+        "keystone_project_id": "keystone_project_id1",
+        "description": "...",
+    },
+    "pdp_id12": {
+        "name": "...",
+        "security_pipeline": ["policy_id_1", "policy_id_2"],
+        "keystone_project_id": "keystone_project_id1",
+        "description": "...",
+    }
+}
+
+meta_rules_mock = {
+    "meta_rule_id1": {
+        "name": "meta_rule1",
+        "algorithm": "name of the meta rule algorithm",
+        "subject_categories": ["subject_category_id1",
+                               "subject_category_id2"],
+        "object_categories": ["object_category_id1"],
+        "action_categories": ["action_category_id1"]
+    },
+    "meta_rule_id2": {
+        "name": "name of the meta rules2",
+        "algorithm": "name of the meta rule algorithm",
+        "subject_categories": ["subject_category_id1",
+                               "subject_category_id2"],
+        "object_categories": ["object_category_id1"],
+        "action_categories": ["action_category_id1"]
+    }
+}
+
+policies_mock = {
+    "policy_id_1": {
+        "name": "test_policy1",
+        "model_id": "model_id_1",
+        "genre": "authz",
+        "description": "test",
+    },
+    "policy_id_2": {
+        "name": "test_policy2",
+        "model_id": "model_id_2",
+        "genre": "authz",
+        "description": "test",
+    }
+}
+
+subject_mock = {
+    "policy_id_1": {
+        "subject_id": {
+            "name": "subject_name",
+            "keystone_id": "keystone_project_id1",
+            "description": "a description"
+        }
+    },
+    "policy_id_2": {
+        "subject_id": {
+            "name": "subject_name",
+            "keystone_id": "keystone_project_id1",
+            "description": "a description"
+        }
+    }
+}
+
+subject_assignment_mock = {
+    "subject_id": {
+        "policy_id": "ID of the policy",
+        "subject_id": "ID of the subject",
+        "category_id": "ID of the category",
+        "assignments": [],
+    }
+}
+
+object_mock = {
+    "policy_id_1": {
+        "object_id": {
+            "name": "object_name",
+            "description": "a description"
+        }
+    },
+    "policy_id_2": {
+        "object_id": {
+            "name": "object_name",
+            "description": "a description"
+        }
+    }
+}
+
+object_assignment_mock = {
+    "object_id": {
+        "policy_id": "ID of the policy",
+        "object_id": "ID of the object",
+        "category_id": "ID of the category",
+        "assignments": [],
+    }
+}
+
+action_mock = {
+    "policy_id_1": {
+        "action_id": {
+            "name": "action_name",
+            "description": "a description"
+        }
+    },
+    "policy_id_2": {
+        "action_id": {
+            "name": "action_name",
+            "description": "a description"
+        }
+    }
+}
+
+action_assignment_mock = {
+    "action_id": {
+        "policy_id": "ID of the policy",
+        "action_id": "ID of the action",
+        "category_id": "ID of the category",
+        "assignments": [],
+    }
+}
+
+models_mock = {
+    "model_id_1": {
+        "name": "test_model",
+        "description": "test",
+        "meta_rules": ["meta_rule_id1"]
+    },
+    "model_id_2": {
+        "name": "test_model",
+        "description": "test",
+        "meta_rules": ["meta_rule_id2"]
+    },
+}
+
+rules_mock = {
+    "rules": {
+        "meta_rule_id": "meta_rule_id1",
+        "rule_id1": {
+            "rule": ["subject_data_id1",
+                     "object_data_id1",
+                     "action_data_id1"],
+            "instructions": (
+                {"decision": "grant"},
+                # "grant" to immediately exit,
+                # "continue" to wait for the result of next policy
+                # "deny" to deny the request
+            )
+        },
+        "rule_id2": {
+            "rule": ["subject_data_id2",
+                     "object_data_id2",
+                     "action_data_id2"],
+            "instructions": (
+                {
+                    "update": {
+                        "operation": "add",
+                        # operations may be "add" or "delete"
+                        "target": "rbac:role:admin"
+                        # add the role admin to the current user
+                    }
+                },
+                {"chain": {"name": "rbac"}}
+                # chain with the policy named rbac
+            )
+        }
+    }
+}
+
+
+def register_cache(m):
+    """ Modify the response from Requests module
+    """
+    register_pdp(m)
+    register_meta_rules(m)
+    register_policies(m)
+    register_models(m)
+    register_policy_subject(m, "policy_id_1")
+    register_policy_subject(m, "policy_id_2")
+    register_policy_object(m, "policy_id_1")
+    register_policy_object(m, "policy_id_2")
+    register_policy_action(m, "policy_id_1")
+    register_policy_action(m, "policy_id_2")
+    register_policy_subject_assignment(m, "policy_id_1", "subject_id")
+    # register_policy_subject_assignment_list(m1, "policy_id_1")
+    register_policy_subject_assignment(m, "policy_id_2", "subject_id")
+    # register_policy_subject_assignment_list(m1, "policy_id_2")
+    register_policy_object_assignment(m, "policy_id_1", "object_id")
+    # register_policy_object_assignment_list(m1, "policy_id_1")
+    register_policy_object_assignment(m, "policy_id_2", "object_id")
+    # register_policy_object_assignment_list(m1, "policy_id_2")
+    register_policy_action_assignment(m, "policy_id_1", "action_id")
+    # register_policy_action_assignment_list(m1, "policy_id_1")
+    register_policy_action_assignment(m, "policy_id_2", "action_id")
+    # register_policy_action_assignment_list(m1, "policy_id_2")
+    register_rules(m, "policy_id1")
+
+
+def register_pdp(m):
+    m.register_uri(
+        'GET', 'http://{}:{}/{}'.format(CONF['components']['manager']['hostname'],
+                                        CONF['components']['manager']['port'], 'pdp'),
+        json={'pdps': pdp_mock}
+    )
+
+
+def register_meta_rules(m):
+    m.register_uri(
+        'GET', 'http://{}:{}/{}'.format(CONF['components']['manager']['hostname'],
+                                        CONF['components']['manager']['port'], 'meta_rules'),
+        json={'meta_rules': meta_rules_mock}
+    )
+
+
+def register_policies(m):
+    m.register_uri(
+        'GET', 'http://{}:{}/{}'.format(CONF['components']['manager']['hostname'],
+                                        CONF['components']['manager']['port'], 'policies'),
+        json={'policies': policies_mock}
+    )
+
+
+def register_models(m):
+    m.register_uri(
+        'GET', 'http://{}:{}/{}'.format(CONF['components']['manager']['hostname'],
+                                        CONF['components']['manager']['port'], 'models'),
+        json={'models': models_mock}
+    )
+
+
+def register_policy_subject(m, policy_id):
+    m.register_uri(
+        'GET', 'http://{}:{}/{}/{}/subjects'.format(CONF['components']['manager']['hostname'],
+                                                    CONF['components']['manager']['port'], 'policies', policy_id),
+        json={'subjects': subject_mock[policy_id]}
+    )
+
+
+def register_policy_object(m, policy_id):
+    m.register_uri(
+        'GET', 'http://{}:{}/{}/{}/objects'.format(CONF['components']['manager']['hostname'],
+                                                   CONF['components']['manager']['port'], 'policies', policy_id),
+        json={'objects': object_mock[policy_id]}
+    )
+
+
+def register_policy_action(m, policy_id):
+    m.register_uri(
+        'GET', 'http://{}:{}/{}/{}/actions'.format(CONF['components']['manager']['hostname'],
+                                                   CONF['components']['manager']['port'], 'policies', policy_id),
+        json={'actions': action_mock[policy_id]}
+    )
+
+
+def register_policy_subject_assignment(m, policy_id, subj_id):
+    m.register_uri(
+        'GET', 'http://{}:{}/{}/{}/subject_assignments/{}'.format(CONF['components']['manager']['hostname'],
+                                                                  CONF['components']['manager']['port'], 'policies',
+                                                                  policy_id,
+                                                                  subj_id),
+        json={'subject_assignments': subject_assignment_mock}
+    )
+
+
+def register_policy_subject_assignment_list(m, policy_id):
+    m.register_uri(
+        'GET', 'http://{}:{}/{}/{}/subject_assignments'.format(CONF['components']['manager']['hostname'],
+                                                               CONF['components']['manager']['port'], 'policies',
+                                                               policy_id),
+        json={'subject_assignments': subject_assignment_mock}
+    )
+
+
+def register_policy_object_assignment(m, policy_id, obj_id):
+    m.register_uri(
+        'GET', 'http://{}:{}/{}/{}/object_assignments/{}'.format(CONF['components']['manager']['hostname'],
+                                                                 CONF['components']['manager']['port'], 'policies',
+                                                                 policy_id,
+                                                                 obj_id),
+        json={'object_assignments': object_assignment_mock}
+    )
+
+
+def register_policy_object_assignment_list(m, policy_id):
+    m.register_uri(
+        'GET', 'http://{}:{}/{}/{}/object_assignments'.format(CONF['components']['manager']['hostname'],
+                                                              CONF['components']['manager']['port'], 'policies',
+                                                              policy_id),
+        json={'object_assignments': object_assignment_mock}
+    )
+
+
+def register_policy_action_assignment(m, policy_id, action_id):
+    m.register_uri(
+        'GET', 'http://{}:{}/{}/{}/action_assignments/{}'.format(CONF['components']['manager']['hostname'],
+                                                                 CONF['components']['manager']['port'], 'policies',
+                                                                 policy_id,
+                                                                 action_id),
+        json={'action_assignments': action_assignment_mock}
+    )
+
+
+def register_policy_action_assignment_list(m, policy_id):
+    m.register_uri(
+        'GET', 'http://{}:{}/{}/{}/action_assignments'.format(CONF['components']['manager']['hostname'],
+                                                              CONF['components']['manager']['port'], 'policies',
+                                                              policy_id),
+        json={'action_assignments': action_assignment_mock}
+    )
+
+
+def register_rules(m, policy_id):
+    m.register_uri(
+        'GET', 'http://{}:{}/{}/{}/{}'.format(CONF['components']['manager']['hostname'],
+                                              CONF['components']['manager']['port'], 'policies',
+                                              policy_id, 'rules'),
+        json={'rules': rules_mock}
+    )
\ No newline at end of file
diff --git a/python_moonutilities/tests/unit_python/mock_components.py b/python_moonutilities/tests/unit_python/mock_components.py
new file mode 100644
index 00000000..a0319e1a
--- /dev/null
+++ b/python_moonutilities/tests/unit_python/mock_components.py
@@ -0,0 +1,27 @@
+import utilities
+
+COMPONENTS = (
+    "logging",
+    "openstack/keystone",
+    "database",
+    "slave",
+    "components/manager",
+    "components/orchestrator",
+    "components/interface",
+)
+
+
+def register_components(m):
+    for component in COMPONENTS:
+        m.register_uri(
+            'GET', 'http://consul:8500/v1/kv/{}'.format(component),
+            json=[{'Key': component, 'Value': utilities.get_b64_conf(component)}]
+        )
+
+    m.register_uri(
+        'GET', 'http://consul:8500/v1/kv/components?recurse=true',
+        json=[
+            {"Key": key, "Value": utilities.get_b64_conf(key)} for key in COMPONENTS
+            ],
+        # json={'Key': "components", 'Value': get_b64_conf("components")}
+    )
\ No newline at end of file
diff --git a/python_moonutilities/tests/unit_python/mock_keystone.py b/python_moonutilities/tests/unit_python/mock_keystone.py
new file mode 100644
index 00000000..c0b26b88
--- /dev/null
+++ b/python_moonutilities/tests/unit_python/mock_keystone.py
@@ -0,0 +1,23 @@
+def register_keystone(m):
+    m.register_uri(
+        'POST', 'http://keystone:5000/v3/auth/tokens',
+        headers={'X-Subject-Token': "111111111"}
+    )
+    m.register_uri(
+        'DELETE', 'http://keystone:5000/v3/auth/tokens',
+        headers={'X-Subject-Token': "111111111"}
+    )
+    m.register_uri(
+        'POST', 'http://keystone:5000/v3/users?name=testuser&domain_id=default',
+        json={"users": {}}
+    )
+    m.register_uri(
+        'GET', 'http://keystone:5000/v3/users?name=testuser&domain_id=default',
+        json={"users": {}}
+    )
+    m.register_uri(
+        'POST', 'http://keystone:5000/v3/users/',
+        json={"users": [{
+            "id": "1111111111111"
+        }]}
+    )
\ No newline at end of file
diff --git a/python_moonutilities/tests/unit_python/requirements.txt b/python_moonutilities/tests/unit_python/requirements.txt
new file mode 100644
index 00000000..3c1ad607
--- /dev/null
+++ b/python_moonutilities/tests/unit_python/requirements.txt
@@ -0,0 +1,2 @@
+pytest
+requests_mock
\ No newline at end of file
diff --git a/python_moonutilities/tests/unit_python/test_cache.py b/python_moonutilities/tests/unit_python/test_cache.py
new file mode 100644
index 00000000..c479395b
--- /dev/null
+++ b/python_moonutilities/tests/unit_python/test_cache.py
@@ -0,0 +1,75 @@
+import pytest
+
+
+def test_authz_request():
+    from python_moonutilities import cache
+    c = cache.Cache()
+    assert isinstance(c.authz_requests, dict)
+
+
+def test_get_subject_success():
+    from python_moonutilities import cache
+    cache_obj = cache.Cache()
+    policy_id = 'policy_id_1'
+    name = 'subject_name'
+    subject_id = cache_obj.get_subject(policy_id, name)
+    assert subject_id is not None
+
+
+def test_get_subject_failure():
+    from python_moonutilities import cache
+    cache_obj = cache.Cache()
+    policy_id = 'policy_id_1'
+    name = 'invalid name'
+    with pytest.raises(Exception) as exception_info:
+        cache_obj.get_subject(policy_id, name)
+    assert str(exception_info.value) == '400: Subject Unknown'
+
+
+def test_get_object_success():
+    from python_moonutilities import cache
+    cache_obj = cache.Cache()
+    policy_id = 'policy_id_1'
+    name = 'object_name'
+    object_id = cache_obj.get_object(policy_id, name)
+    assert object_id is not None
+
+
+def test_get_object_failure():
+    from python_moonutilities import cache
+    cache_obj = cache.Cache()
+    policy_id = 'policy_id_1'
+    name = 'invalid name'
+    with pytest.raises(Exception) as exception_info:
+        cache_obj.get_object(policy_id, name)
+    assert str(exception_info.value) == '400: Subject Unknown'
+
+
+def test_get_action_success():
+    from python_moonutilities import cache
+    cache_obj = cache.Cache()
+    policy_id = 'policy_id_1'
+    name = 'action_name'
+    action_id = cache_obj.get_action(policy_id, name)
+    assert action_id is not None
+
+
+def test_get_action_failure():
+    from python_moonutilities import cache
+    cache_obj = cache.Cache()
+    policy_id = 'policy_id_1'
+    name = 'invalid name'
+    with pytest.raises(Exception) as exception_info:
+        cache_obj.get_action(policy_id, name)
+    assert str(exception_info.value) == '400: Subject Unknown'
+
+
+def test_cache_manager():
+    from python_moonutilities import cache
+    cache_obj = cache.Cache()
+    assert cache_obj.pdp is not None
+    assert cache_obj.meta_rules is not None
+    assert len(cache_obj.meta_rules) == 2
+    assert cache_obj.policies is not None
+    assert len(cache_obj.policies) == 2
+    assert cache_obj.models is not None
\ No newline at end of file
diff --git a/python_moonutilities/tests/unit_python/test_configuration.py b/python_moonutilities/tests/unit_python/test_configuration.py
new file mode 100644
index 00000000..48699062
--- /dev/null
+++ b/python_moonutilities/tests/unit_python/test_configuration.py
@@ -0,0 +1,5 @@
+
+def test_get_components():
+    from python_moonutilities import configuration
+    assert isinstance(configuration.get_components(), dict)
+
diff --git a/python_moonutilities/tests/unit_python/utilities.py b/python_moonutilities/tests/unit_python/utilities.py
new file mode 100644
index 00000000..1d79d890
--- /dev/null
+++ b/python_moonutilities/tests/unit_python/utilities.py
@@ -0,0 +1,136 @@
+import base64
+import json
+
+
+CONF = {
+    "openstack": {
+        "keystone": {
+            "url": "http://keystone:5000/v3",
+            "user": "admin",
+            "check_token": False,
+            "password": "p4ssw0rd",
+            "domain": "default",
+            "certificate": False,
+            "project": "admin"
+        }
+    },
+    "components": {
+        "wrapper": {
+            "bind": "0.0.0.0",
+            "port": 8080,
+            "container": "wukongsun/moon_wrapper:v4.3",
+            "timeout": 5,
+            "hostname": "wrapper"
+        },
+        "manager": {
+            "bind": "0.0.0.0",
+            "port": 8082,
+            "container": "wukongsun/moon_manager:v4.3",
+            "hostname": "manager"
+        },
+        "port_start": 31001,
+        "orchestrator": {
+            "bind": "0.0.0.0",
+            "port": 8083,
+            "container": "wukongsun/moon_orchestrator:v4.3",
+            "hostname": "interface"
+        },
+        "interface": {
+            "bind": "0.0.0.0",
+            "port": 8080,
+            "container": "wukongsun/moon_interface:v4.3",
+            "hostname": "interface"
+        }
+    },
+    "plugins": {
+        "session": {
+            "port": 8082,
+            "container": "asteroide/session:latest"
+        },
+        "authz": {
+            "port": 8081,
+            "container": "wukongsun/moon_authz:v4.3"
+        }
+    },
+    "logging": {
+        "handlers": {
+            "file": {
+                "filename": "/tmp/moon.log",
+                "class": "logging.handlers.RotatingFileHandler",
+                "level": "DEBUG",
+                "formatter": "custom",
+                "backupCount": 3,
+                "maxBytes": 1048576
+            },
+            "console": {
+                "class": "logging.StreamHandler",
+                "formatter": "brief",
+                "level": "INFO",
+                "stream": "ext://sys.stdout"
+            }
+        },
+        "formatters": {
+            "brief": {
+                "format": "%(levelname)s %(name)s %(message)-30s"
+            },
+            "custom": {
+                "format": "%(asctime)-15s %(levelname)s %(name)s %(message)s"
+            }
+        },
+        "root": {
+            "handlers": [
+                "console"
+            ],
+            "level": "ERROR"
+        },
+        "version": 1,
+        "loggers": {
+            "moon": {
+                "handlers": [
+                    "console",
+                    "file"
+                ],
+                "propagate": False,
+                "level": "DEBUG"
+            }
+        }
+    },
+    "slave": {
+        "name": None,
+        "master": {
+            "url": None,
+            "login": None,
+            "password": None
+        }
+    },
+    "docker": {
+        "url": "tcp://172.88.88.1:2376",
+        "network": "moon"
+    },
+    "database": {
+        "url": "sqlite:///database.db",
+        # "url": "mysql+pymysql://moon:p4sswOrd1@db/moon",
+        "driver": "sql"
+    },
+    "messenger": {
+        "url": "rabbit://moon:p4sswOrd1@messenger:5672/moon"
+    }
+}
+
+
+def get_b64_conf(component=None):
+    if component == "components":
+        return base64.b64encode(
+            json.dumps(CONF["components"]).encode('utf-8')+b"\n").decode('utf-8')
+    elif component in CONF:
+        return base64.b64encode(
+            json.dumps(
+                CONF[component]).encode('utf-8')+b"\n").decode('utf-8')
+    elif not component:
+        return base64.b64encode(
+            json.dumps(CONF).encode('utf-8')+b"\n").decode('utf-8')
+    elif "/" in component:
+        key1, _, key2 = component.partition("/")
+        return base64.b64encode(
+            json.dumps(
+                CONF[key1][key2]).encode('utf-8')+b"\n").decode('utf-8')