Add a python virtualenv component

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## UNRELEASED
 
+### NEW COMPONENTS
+
+* Python VirtualEnv component ([GH-74](https://github.com/ystia/forge/issues/74))
+
 ### ENHANCEMENTS
 
 * Add a vault in secured full stack topology ([GH-67](https://github.com/ystia/forge/issues/67))

README.md

@@ -6,7 +6,7 @@ A set of public TOSCA Types and Topology templates used by the Ystia project
 
 ## Documentation
 
-See [our documentation for more details](https://github.com/ystia/forge/blob/develop/org/ystia/README.rst)
+See [our documentation for more details](https://github.com/ystia/forge/blob/develop/org/ystia/README.rst).
 
 ## Downloads
 

org/ystia/python/virtualenv/linux/ansible/playbooks/create.yaml

@@ -0,0 +1,57 @@
+
+#
+# Copyright 2019 Bull S.A.S. Atos Technologies - Bull, Rue Jean Jaures, B.P.68, 78340, Les Clayes-sous-Bois, France.
+#
+# 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.
+#
+
+- name: Install python requirements
+  hosts: all
+  become: true
+  vars:
+    pip_extra_args: ""
+  tasks:
+  - name: Install pip
+    easy_install:
+      name: pip
+      state: latest  
+
+  - name: Install 'virtualenv' package
+    pip:
+      name: virtualenv
+      state: latest
+
+  - name: Set virtualenv path
+    set_fact:
+      VIRTUAL_ENV_PATH: "/usr/local/py-env-{{NODE}}"
+
+  - name: Force installation of at least one package
+    set_fact:
+      PACKAGES: ["pip"]
+    when: PACKAGES  | length == 0
+
+  - name: Set alternate pip index url
+    set_fact:
+      pip_extra_args: "-i {{PIP_INDEX_URL}}"
+    when: PIP_INDEX_URL is defined and PIP_INDEX_URL  | length > 0
+
+  - name: Dumping packages to install
+    debug: 
+      var: PACKAGES
+
+  - name: Install python packages
+    pip:
+      name: "{{PACKAGES}}"
+      extra_args: "{{pip_extra_args}}"
+      virtualenv: "{{ VIRTUAL_ENV_PATH }}"
+      virtualenv_python: "python{{VERSION}}"

org/ystia/python/virtualenv/linux/ansible/playbooks/delete.yaml

@@ -0,0 +1,24 @@
+#
+# Copyright 2019 Bull S.A.S. Atos Technologies - Bull, Rue Jean Jaures, B.P.68, 78340, Les Clayes-sous-Bois, France.
+#
+# 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.
+#
+
+- name: Delete python virtualenv
+  hosts: all
+  become: true
+  tasks:
+  - name: "Delete {{VIRTUAL_ENV_PATH}}"
+    file:
+      path: "{{VIRTUAL_ENV_PATH}}"
+      state: absent  

org/ystia/python/virtualenv/linux/ansible/types.yml

@@ -0,0 +1,65 @@
+tosca_definitions_version: alien_dsl_2_0_0
+
+#
+# Ystia Forge
+# Copyright (C) 2018 Bull S. A. S. - Bull, Rue Jean Jaures, B.P.68, 78340, Les Clayes-sous-Bois, France.
+# Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
+#
+
+metadata:
+  template_name: org.ystia.python.virtualenv.linux.ansible
+  template_version: 2.2.0-SNAPSHOT
+  template_author: Ystia
+
+description: Python VirtualEnv for linux system
+
+imports:
+  - tosca-normative-types:1.0.0-ALIEN20
+  - yorc-types:1.0.0
+  - org.ystia.python.pub:2.2.0-SNAPSHOT
+
+
+node_types:
+  org.ystia.python.virtualenv.linux.ansible.nodes.Python:
+    derived_from: tosca.nodes.SoftwareComponent
+    description: Python in a virtualenv component for linux
+    tags:
+      icon: /images/python-logo.png
+    properties:
+      component_version:
+        type: version
+        description: The installed Python version should be the version of the python executable eg 3.5 for python3.5
+        default: 2.7
+      packages:
+        type: list
+        entry_schema:
+          type: string
+        description: Install additionnal package
+        required: false
+      pip_index_url:
+        type: string
+        description: >
+          allows to set a custom index url for pip.
+          This allows offline installations for instance.
+        default: ""
+        required: false
+    attributes:
+      virtualenv_path: { get_operation_output: [SELF, Standard, create, VIRTUAL_ENV_PATH] }
+    capabilities:
+      python_host:
+        type: org.ystia.python.pub.capabilities.PythonHosting
+        occurrences: [0,unbounded]
+    interfaces:
+      Standard:
+        create:
+          inputs:
+            VERSION: { get_property: [SELF, component_version] }
+            PACKAGES: { get_property: [SELF, packages] }
+            PIP_INDEX_URL: { get_property: [SELF, pip_index_url] }
+          implementation: playbooks/create.yaml
+        delete:
+          inputs:
+            VIRTUAL_ENV_PATH: { get_attribute: [SELF, virtualenv_path] }
+          implementation: playbooks/delete.yaml
+
+