diff --git a/descriptor-packages/tools/charm-generator/LICENSE b/descriptor-packages/tools/charm-generator/LICENSE
new file mode 100644
index 0000000..76d751a
--- /dev/null
+++ b/descriptor-packages/tools/charm-generator/LICENSE
@@ -0,0 +1,202 @@
+                                 Apache License
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+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+   1. Definitions.
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+   5. Submission of Contributions. Unless You explicitly state otherwise,
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+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
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+   Copyright 2019 Eduardo Sousa <esousa@whitestack.com>,
+                  Gianpietro Lavado <glavado@whitestack.com>
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/descriptor-packages/tools/charm-generator/README.md b/descriptor-packages/tools/charm-generator/README.md
new file mode 100644
index 0000000..fd8d7e0
--- /dev/null
+++ b/descriptor-packages/tools/charm-generator/README.md
@@ -0,0 +1,81 @@
+Charm Generator
+===============
+
+This tool was designed to help bootstrap the process of charm creation.
+It should help beginners to have a charm working in a matter of minutes.
+
+The charm generator takes as input an initialized charm and some scripts
+or description of HTTP requests and transforms it into a functional charm
+with all the metadata filled in.
+
+The main flow is the following:
+
+1) charm create <name of the charm>
+2) copy the scripts or the requests definition into a specific directory
+3) run the generator
+4) charm build
+
+What types of charms can be generated?
+--------------------------------------
+
+Currently, the Charm Generator only supports Ansible scripts.
+
+In the roadmap, the following charms are planned:
+
+* HTTP Requests
+* SOL002 Requests
+* Python Scripts
+
+How to run the Charm Generator?
+-------------------------------
+
+To run the Charm Generator, you should do the following steps:
+
+1) Download the OSM Devops git repository
+2) Install the requirements.txt
+3) Run the generator.py in the charm that you want to generate
+
+The only mandatory parameter is what type of charm you want to
+generate:
+
+* Ansible (--ansible)
+* HTTP Requests (--http) - not implemented
+* SOL002 Requests (--sol002) - not implemented
+* Python Scripts (--scripts) - not implemented
+
+There are some recommended parameters, such as:
+
+* Summary - summary of what the charm does (--summary)
+* Maintainer - the name and email of the maintainer (--maintainer)
+* Description - description of what the charm does (--description)
+* Company - company name to be include in the license headers (--company)
+* Email - email of the company/developer to be included in the license headers (--email)
+
+Specifics of the Ansible option
+-------------------------------
+
+In order to create an Ansible charm, you need to create a directory
+inside the charm and name it playbooks. Inside that directory, you 
+should put all the playbooks that are going to be executed in the charm.
+
+Note: the playbooks extension must be .yaml
+
+Your charm should look like this before running the generator:
+
+~~~
+.
+├── config.yaml
+├── icon.svg
+├── layer.yaml
+├── metadata.yaml
+├── playbooks
+│   ├── pb-1.yaml
+│   ├── playbook2.yaml
+│   └── playbook_3.yaml
+├── reactive
+│   └── testch.py
+├── README.ex
+└── tests
+    ├── 00-setup
+    └── 10-deploy
+~~~
\ No newline at end of file
diff --git a/descriptor-packages/tools/charm-generator/actions/__init__.py b/descriptor-packages/tools/charm-generator/actions/__init__.py
new file mode 100644
index 0000000..e584ee5
--- /dev/null
+++ b/descriptor-packages/tools/charm-generator/actions/__init__.py
@@ -0,0 +1,17 @@
+# Copyright 2019 Whitestack, LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: esousa@whitestack.com or glavado@whitestack.com
+##
diff --git a/descriptor-packages/tools/charm-generator/actions/templates/action.j2 b/descriptor-packages/tools/charm-generator/actions/templates/action.j2
new file mode 100644
index 0000000..c1727c6
--- /dev/null
+++ b/descriptor-packages/tools/charm-generator/actions/templates/action.j2
@@ -0,0 +1,56 @@
+#!/usr/bin/env python3
+{#-
+# Copyright 2019 Whitestack, LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: esousa@whitestack.com or glavado@whitestack.com
+-#}
+{%- if license is defined %}
+# Copyright {{ license.year }} {{ license.company }}
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: {{ license.email }}
+{%- endif %}
+
+import sys
+sys.path.append('lib')
+
+from charms.reactive import main
+from charms.reactive import set_state
+from charmhelpers.core.hookenv import action_fail, action_name
+
+"""
+`set_state` only works here because it's flushed to disk inside the `main()`
+loop. remove_state will need to be called inside the action method.
+"""
+set_state('actions.{}'.format(action_name()))
+
+try:
+    main()
+except Exception as e:
+    action_fail(repr(e))
+
diff --git a/descriptor-packages/tools/charm-generator/actions/templates/actions.yaml.j2 b/descriptor-packages/tools/charm-generator/actions/templates/actions.yaml.j2
new file mode 100644
index 0000000..e9f2961
--- /dev/null
+++ b/descriptor-packages/tools/charm-generator/actions/templates/actions.yaml.j2
@@ -0,0 +1,44 @@
+{#-
+# Copyright 2019 Whitestack, LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: esousa@whitestack.com or glavado@whitestack.com
+-#}
+{%- if license is defined -%}
+# Copyright {{ license.year }} {{ license.company }}
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: {{ license.email }}
+{% endif %}
+
+{%- for act in actions %}
+{{ act.action_name }}:
+    description: "Insert description for this playbook."
+    {#- TODO: Insert parameters -#}
+    {#- TODO: Insert required -#}
+{% endfor %}
+
diff --git a/descriptor-packages/tools/charm-generator/ansible-charm/__init__.py b/descriptor-packages/tools/charm-generator/ansible-charm/__init__.py
new file mode 100644
index 0000000..e584ee5
--- /dev/null
+++ b/descriptor-packages/tools/charm-generator/ansible-charm/__init__.py
@@ -0,0 +1,17 @@
+# Copyright 2019 Whitestack, LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: esousa@whitestack.com or glavado@whitestack.com
+##
diff --git a/descriptor-packages/tools/charm-generator/ansible-charm/templates/ansible_charm.py.j2 b/descriptor-packages/tools/charm-generator/ansible-charm/templates/ansible_charm.py.j2
new file mode 100644
index 0000000..d9e2f55
--- /dev/null
+++ b/descriptor-packages/tools/charm-generator/ansible-charm/templates/ansible_charm.py.j2
@@ -0,0 +1,84 @@
+{#-
+# Copyright 2019 Whitestack, LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: esousa@whitestack.com or glavado@whitestack.com
+-#}
+{%- if license is defined -%}
+# Copyright {{ license.year }} {{ license.company }}
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: {{ license.email }}
+{%- endif %}
+
+
+import sys
+import traceback
+
+from charmhelpers.core.hookenv import (
+    action_get,
+    action_fail,
+    action_set,
+    config,
+    status_set,
+)
+
+import charms.libansible
+
+from charms.reactive import (
+    remove_state as remove_flag,
+    set_state as set_flag,
+    when,
+)
+
+
+# Sets the status of the charm to show in OSM: configured
+@when('config.changed')
+def config_changed():
+    set_flag('{{ charm_name }}.configured')
+    status_set('active', 'ready!')
+    return
+
+
+# Edits ansible config files and executes ansible-playbook
+{% for pb in playbooks -%}
+@when('{{ charm_name }}.configured')
+@when('actions.{{ pb.action_name }}')
+def {{ pb.function_name }}():
+    try:
+        result = charms.libansible.execute_playbook('{{ pb.file }}')
+    except:
+        exc_type, exc_value, exc_traceback = sys.exc_info()
+        err = traceback.format_exception(exc_type, exc_value, exc_traceback)
+        action_fail('{{ pb.action_name }} failed: ' + str(err))
+    else:
+        action_set({'output': result})
+    finally:
+        remove_flag('actions.{{ pb.action_name }}')
+
+
+{% endfor -%}
\ No newline at end of file
diff --git a/descriptor-packages/tools/charm-generator/ansible-charm/templates/ansible_lib.py.j2 b/descriptor-packages/tools/charm-generator/ansible-charm/templates/ansible_lib.py.j2
new file mode 100644
index 0000000..109bae0
--- /dev/null
+++ b/descriptor-packages/tools/charm-generator/ansible-charm/templates/ansible_lib.py.j2
@@ -0,0 +1,93 @@
+{#-
+# Copyright 2019 Whitestack, LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: esousa@whitestack.com or glavado@whitestack.com
+-#}
+{%- if license is defined -%}
+# Copyright {{ license.year }} {{ license.company }}
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: {{ license.email }}
+{%- endif %}
+
+import fnmatch
+import os
+import yaml
+import subprocess
+
+from charmhelpers.core.hookenv import config
+
+
+def create_hosts(cfg, hosts):
+    inventory_path = '/etc/ansible/hosts'
+
+    with open(inventory_path, 'w') as f:
+        f.write('[{}]\n'.format(hosts))
+        h1 = '{0} ansible_connection=ssh ansible_ssh_user={1} ansible_ssh_pass={2} ' \
+             'ansible_python_interpreter=/usr/bin/python3\n'.format(cfg['ssh-hostname'], cfg['ssh-username'],
+                                                                    cfg['ssh-password'])
+        f.write(h1)
+
+
+def create_ansible_cfg():
+    ansible_config_path = '/etc/ansible/ansible.cfg'
+
+    with open(ansible_config_path, 'w') as f:
+        f.write('[defaults]\n')
+        f.write('host_key_checking = False\n')
+
+
+# Function to find the playbook path
+def find(pattern, path):
+    result = ''
+    for root, dirs, files in os.walk(path):
+        for name in files:
+            if fnmatch.fnmatch(name, pattern):
+                result = os.path.join(root, name)
+    return result
+
+
+def execute_playbook(playbook_file, vars=None):
+    playbook_path = find(playbook_file, '/var/lib/juju/agents/')
+
+    cfg = config()
+
+    with open(playbook_path, 'r') as f:
+        playbook_data = yaml.load(f)
+
+    hosts = 'all'
+    if 'hosts' in playbook_data[0].keys() and playbook_data[0]['hosts']:
+        hosts = playbook_data[0]['hosts']
+
+    create_ansible_cfg()
+    create_hosts(cfg, hosts)
+
+    call = ['ansible-playbook', playbook_path]
+    result = subprocess.check_output(call)
+
+    return result
diff --git a/descriptor-packages/tools/charm-generator/ansible-charm/templates/layer.yaml.j2 b/descriptor-packages/tools/charm-generator/ansible-charm/templates/layer.yaml.j2
new file mode 100644
index 0000000..3b0fa83
--- /dev/null
+++ b/descriptor-packages/tools/charm-generator/ansible-charm/templates/layer.yaml.j2
@@ -0,0 +1,49 @@
+{#-
+# Copyright 2019 Whitestack, LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: esousa@whitestack.com or glavado@whitestack.com
+-#}
+{%- if license is defined -%}
+# Copyright {{ license.year }} {{ license.company }}
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: {{ license.email }}
+{%- endif %}
+
+includes:
+{% for lr in layers -%}
+- "layer:{{ lr.name }}"
+{% endfor -%}
+options:
+{%- for lr in layers if lr.options is defined %}
+  {{ lr.name }}:
+    {%- for op in lr.options %}
+    {{ op.name }}: {{ op.value }}
+    {%- endfor -%}
+{% endfor %}
+
diff --git a/descriptor-packages/tools/charm-generator/generator.py b/descriptor-packages/tools/charm-generator/generator.py
new file mode 100644
index 0000000..22ce1cb
--- /dev/null
+++ b/descriptor-packages/tools/charm-generator/generator.py
@@ -0,0 +1,171 @@
+# Copyright 2019 Whitestack, LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: esousa@whitestack.com or glavado@whitestack.com
+##
+
+import argparse
+import logging
+import sys
+
+from datetime import datetime
+
+from generators.ansible_generator import AnsibleGenerator
+
+
+def configure_logger(args):
+    global logger
+    logger = logging.getLogger()
+
+    if args.verbose:
+        logger.setLevel(logging.DEBUG)
+    else:
+        logger.setLevel(logging.INFO)
+
+    handler = logging.StreamHandler(sys.stdout)
+
+    if args.verbose:
+        handler.setLevel(logging.DEBUG)
+    else:
+        handler.setLevel(logging.INFO)
+
+    formatter = logging.Formatter('[%(levelname)s] %(message)s')
+    handler.setFormatter(formatter)
+    logger.addHandler(handler)
+
+
+def verify_environment(args):
+    pass
+
+
+def input_processing():
+    parser = argparse.ArgumentParser(description='Charm generator for OSM VNFs')
+
+    # Setting logger from INFO to DEBUG
+    parser.add_argument('-v', '--verbose', required=False, action='store_true',
+                        help='increase output verbosity')
+
+    # Backend selection
+    backend_parser = parser.add_mutually_exclusive_group(required=True)
+
+    backend_parser.add_argument('--ansible', action='store_true',
+                                help='generate an Ansible charm')
+    backend_parser.add_argument('--http', action='store_true',
+                                help='generate a HTTP charm')
+    backend_parser.add_argument('--sol002', action='store_true',
+                                help='generate a SOL002 charm')
+    backend_parser.add_argument('--scripts', action='store_true',
+                                help='generate a Scripts charm')
+
+    # Metadata inputs
+    metadata_parser = parser.add_argument_group('metadata')
+
+    metadata_parser.add_argument('--summary', required=False, action='store',
+                                 help='summary to be included in the metadata.yaml')
+    metadata_parser.add_argument('--maintainer', required=False, action='store',
+                                 help='maintainer information to be included in the metadata.yaml')
+    metadata_parser.add_argument('--description', required=False, action='store',
+                                 help='description to be included in the metadata.yaml')
+
+    # License header inputs
+    license_header_group = parser.add_argument_group('license_header')
+
+    license_header_group.add_argument('--company', required=False, action='store',
+                                      help='company name to be included in the license headers')
+    license_header_group.add_argument('--email', required=False, action='store',
+                                      help='email to be included in the license headers')
+
+    return parser.parse_args()
+
+
+def process_args(args):
+    # Metadata information for metadata.yaml
+    metadata = {}
+
+    if args.summary:
+        metadata['summary'] = args.summary
+    if args.maintainer:
+        metadata['maintainer'] = args.maintainer
+    if args.description:
+        metadata['description'] = args.description
+
+    # Information for license headers
+    license = {
+        'year': datetime.now().year
+    }
+
+    if args.company:
+        license['company'] = args.company
+    if args.email:
+        license['email'] = args.email
+
+    # Options to configure the backends
+    options = {
+        'backend': None
+    }
+
+    if args.ansible:
+        options['backend'] = 'ansible'
+    elif args.http:
+        options['backend'] = 'http'
+    elif args.sol002:
+        options['backend'] = 'sol002'
+    elif args.scripts:
+        options['backend'] = 'scripts'
+
+    return metadata, license, options
+
+
+def main():
+    # getting the input from the user
+    args = input_processing()
+
+    # configure the logger
+    configure_logger(args)
+
+    logger.info('Starting generation process...')
+
+    # verify if the environment is correct and the args are valid
+    verify_environment(args)
+
+    # process data to input in generator
+    metadata, license, options = process_args(args)
+
+    logger.debug('Metadata: %s', metadata)
+    logger.debug('License: %s', license)
+    logger.debug('Options: %s', options)
+
+    if options['backend'] == 'ansible':
+        generator = AnsibleGenerator(metadata=metadata, license=license, options=options)
+    elif options['backend'] == 'http':
+        logger.error('HTTP backend not yet available. Available backends are: ansible')
+        sys.exit(-1)
+    elif options['backend'] == 'sol002':
+        logger.error('SOL002 backend not yet available. Available backends are: ansible')
+        sys.exit(-1)
+    elif options['backend'] == 'scripts':
+        logger.error('Scripts backend not yet available. Available backends are: ansible')
+        sys.exit(-1)
+    else:
+        logger.error('Undefined backend for generator. Available backends are: ansible')
+        sys.exit(-1)
+
+    generator.generate()
+
+    logger.info('Generation process complete.')
+
+
+if __name__ == "__main__":
+    main()
diff --git a/descriptor-packages/tools/charm-generator/generators/__init__.py b/descriptor-packages/tools/charm-generator/generators/__init__.py
new file mode 100644
index 0000000..e584ee5
--- /dev/null
+++ b/descriptor-packages/tools/charm-generator/generators/__init__.py
@@ -0,0 +1,17 @@
+# Copyright 2019 Whitestack, LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: esousa@whitestack.com or glavado@whitestack.com
+##
diff --git a/descriptor-packages/tools/charm-generator/generators/actions_generator.py b/descriptor-packages/tools/charm-generator/generators/actions_generator.py
new file mode 100644
index 0000000..832fd09
--- /dev/null
+++ b/descriptor-packages/tools/charm-generator/generators/actions_generator.py
@@ -0,0 +1,130 @@
+# Copyright 2019 Whitestack, LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: esousa@whitestack.com or glavado@whitestack.com
+##
+
+import functools
+import logging
+import os
+import stat
+
+from jinja2 import Environment, PackageLoader
+
+
+class ActionsGenerator:
+    LOGGER = logging.getLogger()
+    ENV = Environment(loader=PackageLoader('actions', 'templates'))
+
+    def __init__(self, metadata, actions, license=None, options=None):
+        """
+        Creates the object to generate the actions folder, actions files and actions.yaml.
+
+        Usage should be:
+
+        1) Create the object.
+        2) Run the generate method.
+
+        :param metadata: metadata information about the charm being generated.
+        :param actions: actions to be included in the charm.
+        :param license: information license to included in the charm being generated.
+        :param options: options to override the normal flow.
+        """
+        self.path = os.getcwd()
+        self.metadata = metadata
+        self.actions = actions
+        self.license = license
+        self.options = options
+
+    def generate(self):
+        """
+        Generates the actions folder, actions files and actions.yaml.
+        """
+        ActionsGenerator.LOGGER.info('Generating the actions...')
+
+        self._create_actions_folder()
+
+        for action in self.actions:
+            self._generate_action_file(action)
+
+        self._generate_actions_yaml_file()
+
+        ActionsGenerator.LOGGER.info('Generated the actions.')
+
+    def _create_actions_folder(self):
+        """
+        Creates the actions folder, where all the action files are placed.
+        These files are the entry point for the execution of the actions.
+        """
+        ActionsGenerator.LOGGER.debug('Creating the actions folder...')
+
+        actions_path = self.path + '/actions'
+
+        if not os.path.isdir(actions_path):
+            os.mkdir(actions_path)
+        else:
+            ActionsGenerator.LOGGER.warning('Actions folder already exists.')
+            return
+
+        ActionsGenerator.LOGGER.debug('Created actions folder.')
+
+    def _generate_action_file(self, action):
+        """
+        Generates the action file to act as entry point for a specific action.
+
+        Note: the action file is made executable during this function.
+
+        :param action: dictionary with information about the action
+        """
+        ActionsGenerator.LOGGER.debug('Creating action file: %s...', action['action_name'])
+
+        playbook_path = self.path + ('/actions/%s' % action['action_name'])
+        action_file_template = ActionsGenerator.ENV.get_template('action.j2')
+
+        with open(playbook_path, "w") as f:
+            f.write(action_file_template.render(license=self.license))
+            mode = os.fstat(f.fileno()).st_mode
+            mode |= stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH
+            os.fchmod(f.fileno(), stat.S_IMODE(mode))
+
+        ActionsGenerator.LOGGER.debug('Created action file: %s.', action['action_name'])
+
+    def _generate_actions_yaml_file(self):
+        """
+        Generates the actions.yaml file from a template.
+        It takes all the playbook information and fills in the templates.
+
+        Note: renames the old actions.yaml file with a .bkp extension, so the history is preserved.
+        """
+        ActionsGenerator.LOGGER.debug('Creating actions.yaml...')
+
+        actions_yaml_path = self.path + '/actions.yaml'
+        actions_template = ActionsGenerator.ENV.get_template('actions.yaml.j2')
+
+        if os.path.isfile(actions_yaml_path):
+            ids = [int(f.split('.')[-1]) for f in os.listdir(self.path) if f.startswith('actions.yaml.bkp')]
+
+            id = 0
+            if ids:
+                id = functools.reduce(lambda x, y: x if (x > y) else y, ids)
+                id += 1
+
+            backup_actions_yaml_path = self.path + ('/actions.yaml.bkp.%02d' % id)
+            os.rename(actions_yaml_path, backup_actions_yaml_path)
+
+        with open(actions_yaml_path, 'w') as f:
+            f.write(actions_template.render(actions=self.actions, license=self.license))
+
+        ActionsGenerator.LOGGER.debug('Created actions.yaml.')
diff --git a/descriptor-packages/tools/charm-generator/generators/ansible_generator.py b/descriptor-packages/tools/charm-generator/generators/ansible_generator.py
new file mode 100644
index 0000000..18f5a5a
--- /dev/null
+++ b/descriptor-packages/tools/charm-generator/generators/ansible_generator.py
@@ -0,0 +1,182 @@
+# Copyright 2019 Whitestack, LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: esousa@whitestack.com or glavado@whitestack.com
+##
+
+import functools
+import logging
+import os
+import sys
+
+from jinja2 import Environment, PackageLoader
+
+from generators.actions_generator import ActionsGenerator
+from generators.metadata_generator import MetadataGenerator
+
+
+class AnsibleGenerator:
+    LOGGER = logging.getLogger()
+    ENV = Environment(loader=PackageLoader('ansible-charm', 'templates'))
+
+    def __init__(self, metadata, license=None, options=None):
+        """
+        Creates the object to generate the ansible charm from templates.
+
+        Usage should be:
+
+        1) Create the object.
+        2) Run the generate method.
+
+        :param metadata: metadata information about the charm being generated.
+        :param license: information license to included in the charm being generated.
+        :param options: options to override the normal flow.
+        """
+        self.path = os.getcwd()
+        self.metadata = metadata
+        self.license = license
+        self.options = options
+        self.playbooks = AnsibleGenerator._fetch_all_playbooks(self.path)
+
+        playbooks_name = [playbook['file'] for playbook in self.playbooks]
+        AnsibleGenerator.LOGGER.debug('Playbooks found: %s', playbooks_name)
+
+        self.metadata_generator = MetadataGenerator(metadata=self.metadata, license=self.license, options=self.options)
+        self.actions_generator = ActionsGenerator(metadata=self.metadata, actions=self.playbooks, license=self.license,
+                                                  options=self.options)
+
+    def generate(self):
+        """
+        Generates the Ansible Charm using templates.
+        """
+        AnsibleGenerator.LOGGER.info('Generating the Ansible Charm...')
+
+        # Generating metadata.yaml
+        self.metadata_generator.generate()
+        self.metadata = self.metadata_generator.get_metadata()
+
+        # Generating actions
+        self.actions_generator.generate()
+
+        self._generate_ansible_lib()
+        self._generate_layer_yaml_file()
+        self._generate_reactive_file()
+
+        AnsibleGenerator.LOGGER.info('Generated the Ansible Charm.')
+
+    @staticmethod
+    def _fetch_all_playbooks(path):
+        """
+        Walks over the playbooks directory, fetches the playbook's name.
+        It takes the file name and normalizes it to be used in the ansible charm.
+
+        :param path: path of the root of the charm.
+        :return: a list of dictionaries with the information about the playbooks.
+        """
+        playbooks_path = path + '/playbooks'
+
+        if os.path.isdir(playbooks_path) and len(os.listdir(playbooks_path)) != 0:
+            filenames = os.listdir(playbooks_path)
+
+            result = []
+            for file in filenames:
+                info = {
+                    'action_name': file.replace('_', '-').replace('.yaml', ''),
+                    'function_name': file.replace('-', '_').replace('.yaml', ''),
+                    'file': file
+                }
+                result.append(info)
+
+            return result
+        else:
+            AnsibleGenerator.LOGGER.error('Playbooks directory should exist and be populated.')
+            sys.exit(-1)
+
+    def _generate_ansible_lib(self):
+        """
+        Generates the ansible lib file from a template.
+        """
+        AnsibleGenerator.LOGGER.debug('Creating ansible.py lib...')
+
+        lib_folder_path = self.path + '/lib/charms'
+        ansible_lib_path = lib_folder_path + '/libansible.py'
+
+        if not os.path.isdir(lib_folder_path):
+            os.makedirs(lib_folder_path)
+
+        ansible_lib_template = AnsibleGenerator.ENV.get_template('ansible_lib.py.j2')
+
+        with open(ansible_lib_path, 'w') as f:
+            f.write(ansible_lib_template.render(license=self.license))
+
+        AnsibleGenerator.LOGGER.debug('Created anisble.py lib.')
+
+    def _generate_layer_yaml_file(self):
+        """
+        Generates the layer.yaml file from a template.
+
+        Note: disables the venv environment.
+        """
+        AnsibleGenerator.LOGGER.debug('Creating layer.yaml...')
+
+        layer_yaml_path = self.path + '/layer.yaml'
+
+        layers = [{
+            'name': 'basic',
+            'options': [{
+                'name': 'use_venv',
+                'value': 'false'
+            }]}, {
+            'name': 'ansible-base'
+        }, {
+            'name': 'vnfproxy'
+        }]
+
+        layer_template = AnsibleGenerator.ENV.get_template('layer.yaml.j2')
+
+        with open(layer_yaml_path, 'w') as f:
+            f.write(layer_template.render(layers=layers, license=self.license))
+
+        AnsibleGenerator.LOGGER.debug('Created layer.yaml.')
+
+    def _generate_reactive_file(self):
+        """
+        Generates the Ansible reactive file from a template.
+        It takes all the playbook information and fills in the templates.
+
+        Note: renames the old charm file with a .bkp extension, so the history is preserved.
+        """
+        AnsibleGenerator.LOGGER.debug('Creating ansible charm: %s...', self.metadata['file'])
+
+        reactive_folder_path = self.path + '/reactive'
+        charm_file_path = reactive_folder_path + ('/%s' % self.metadata['file'])
+        ansible_charm_template = AnsibleGenerator.ENV.get_template('ansible_charm.py.j2')
+
+        ids = [int(f.split('.')[-1]) for f in os.listdir(reactive_folder_path)
+               if f.startswith('%s.bkp' % self.metadata['file'])]
+
+        id = 0
+        if ids:
+            id = functools.reduce(lambda x, y: x if (x > y) else y, ids)
+            id += 1
+
+        backup_charm_file_path = reactive_folder_path + ('/%s.bkp.%02d' % (self.metadata['file'], id))
+        os.rename(charm_file_path, backup_charm_file_path)
+
+        with open(charm_file_path, 'w') as f:
+            f.write(ansible_charm_template.render(charm_name=self.metadata['name'], playbooks=self.playbooks,
+                                                  license=self.license))
+
+        AnsibleGenerator.LOGGER.debug('Created ansible charm: %s.', self.metadata['file'])
diff --git a/descriptor-packages/tools/charm-generator/generators/metadata_generator.py b/descriptor-packages/tools/charm-generator/generators/metadata_generator.py
new file mode 100644
index 0000000..8b0d9b8
--- /dev/null
+++ b/descriptor-packages/tools/charm-generator/generators/metadata_generator.py
@@ -0,0 +1,152 @@
+# Copyright 2019 Whitestack, LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: esousa@whitestack.com or glavado@whitestack.com
+##
+
+import functools
+import logging
+import os
+import sys
+
+import yaml
+
+from jinja2 import Environment, PackageLoader
+
+
+class MetadataGenerator:
+    LOGGER = logging.getLogger()
+    ENV = Environment(loader=PackageLoader('metadata', 'templates'))
+
+    def __init__(self, metadata, license=None, options=None):
+        """
+        Creates the object to generate the metadata.yaml file from a template.
+
+        Usage should be:
+
+        1) Create the object.
+        2) Run the generate method.
+
+        :param metadata: metadata information about the charm being generated.
+        :param license: information license to included in the charm being generated.
+        :param options: options to override the normal flow.
+        """
+        self.path = os.getcwd()
+        self.metadata = metadata
+        self.license = license
+        self.options = options
+
+    def generate(self):
+        """
+        Generates the metadata.yaml using templates.
+        """
+        MetadataGenerator.LOGGER.info('Generating the metadata.yaml...')
+
+        standard_metadata = self._read_metadata_yaml()
+        self._update_metadata(standard_metadata)
+        self._rename_metadata_yaml_as_backup()
+        self._write_metadata_yaml()
+
+        MetadataGenerator.LOGGER.info('Generated the metadata.yaml.')
+
+    def get_metadata(self):
+        """
+        Gets the enhanced metadata.
+
+        :return: the enhanced metadata dictionary.
+        """
+        return self.metadata
+
+    def _read_metadata_yaml(self):
+        """
+        Reads the values from the old metadata.yaml and does a cleanup on undesired values.
+        """
+        MetadataGenerator.LOGGER.debug('Reading old metadata.yaml...')
+
+        metadata_yaml_path = self.path + '/metadata.yaml'
+
+        if not os.path.isfile(metadata_yaml_path):
+            MetadataGenerator.LOGGER.error('metadata.yaml must be present. Must be run in the root of the charm')
+            sys.exit(-1)
+
+        with open(metadata_yaml_path, 'r') as f:
+            metadata = yaml.load(f)
+
+        if 'tags' in metadata.keys():
+            del metadata['tags']
+        if 'provides' in metadata.keys():
+            del metadata['provides']
+        if 'requires' in metadata.keys():
+            del metadata['requires']
+        if 'peers' in metadata.keys():
+            del metadata['peers']
+
+        MetadataGenerator.LOGGER.debug('Read old metadata.yaml.')
+
+        return metadata
+
+    def _update_metadata(self, metadata):
+        """
+        Update internal metadata before writing the new metadata.yaml.
+
+        :param metadata: metadata values provided by the user.
+        """
+        MetadataGenerator.LOGGER.debug('Generating the Ansible Charm...')
+
+        if 'name' in metadata:
+            self.metadata['name'] = metadata['name']
+            self.metadata['file'] = '%s.py' % metadata['name'].replace('-', '_')
+
+        self.metadata['subordinate'] = False
+        self.metadata['tags'] = ['misc', 'osm', 'vnf']
+        self.metadata['series'] = ['xenial', 'trusty']
+
+        MetadataGenerator.LOGGER.debug('Generating the Ansible Charm...')
+
+    def _rename_metadata_yaml_as_backup(self):
+        """
+        Renames the metadata.yaml to metadata.yaml.bkp.*.
+        Preserves the history of the charm for the user.
+        """
+        MetadataGenerator.LOGGER.debug('Renaming the metadata.yaml to .bkp.*...')
+
+        metadata_yaml_path = self.path + '/metadata.yaml'
+
+        ids = [int(f.split('.')[-1]) for f in os.listdir(self.path)
+               if f.startswith('metadata.yaml.bkp')]
+
+        id = 0
+        if ids:
+            id = functools.reduce(lambda x, y: x if (x > y) else y, ids)
+            id += 1
+
+        backup_metadata_yaml_path = self.path + ('/metadata.yaml.bkp.%02d' % id)
+        os.rename(metadata_yaml_path, backup_metadata_yaml_path)
+
+        MetadataGenerator.LOGGER.debug('Renamed the metadata.yaml to .bkp.%02d.', id)
+
+    def _write_metadata_yaml(self):
+        """
+        Writes the enriched metadata to metadata.yaml.
+        """
+        MetadataGenerator.LOGGER.debug('Generating metadata.yaml...')
+
+        metadata_yaml_path = self.path + '/metadata.yaml'
+        metadata_yaml_template = MetadataGenerator.ENV.get_template('metadata.yaml.j2')
+
+        with open(metadata_yaml_path, 'w') as f:
+            f.write(metadata_yaml_template.render(metadata=self.metadata, license=self.license))
+
+        MetadataGenerator.LOGGER.debug('Generated metadata.yaml.')
diff --git a/descriptor-packages/tools/charm-generator/metadata/__init__.py b/descriptor-packages/tools/charm-generator/metadata/__init__.py
new file mode 100644
index 0000000..e584ee5
--- /dev/null
+++ b/descriptor-packages/tools/charm-generator/metadata/__init__.py
@@ -0,0 +1,17 @@
+# Copyright 2019 Whitestack, LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: esousa@whitestack.com or glavado@whitestack.com
+##
diff --git a/descriptor-packages/tools/charm-generator/metadata/templates/metadata.yaml.j2 b/descriptor-packages/tools/charm-generator/metadata/templates/metadata.yaml.j2
new file mode 100644
index 0000000..e189244
--- /dev/null
+++ b/descriptor-packages/tools/charm-generator/metadata/templates/metadata.yaml.j2
@@ -0,0 +1,50 @@
+{#-
+# Copyright 2019 Whitestack, LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: esousa@whitestack.com or glavado@whitestack.com
+-#}
+{%- if license is defined -%}
+# Copyright {{ license.year }} {{ license.company }}
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: {{ license.email }}
+{%- endif %}
+
+name: {{ metadata.name }}
+summary: {{ metadata.summary }}
+maintainer: {{ metadata.maintainer }}
+description: {{ metadata.description }}
+tags:
+{% for tag in metadata.tags -%}
+- {{ tag }}
+{% endfor -%}
+series:
+{% for serie in metadata.series -%}
+- {{ serie }}
+{% endfor -%}
+subordinate: {{ metadata.subordinate }}
diff --git a/descriptor-packages/tools/charm-generator/requirements.txt b/descriptor-packages/tools/charm-generator/requirements.txt
new file mode 100644
index 0000000..89ee2b0
--- /dev/null
+++ b/descriptor-packages/tools/charm-generator/requirements.txt
@@ -0,0 +1 @@
+Jinja2==2.10