Update role for new source build process

The variables heat_developer_mode and heat_venv_download
no longer carry any meaning. This review changes heat to
do the equivalent of what developer_mode was all the time,
meaning that it always builds the venv and never requires
the repo server, but it will use a repo server when available.

As part of this, we move the installation out of its own file
because it's now a single task to include the venv build role.
This is just to make it easier to follow the code.

Depends-On: https://review.openstack.org/648551
Change-Id: I4b66febefc77176a112486b0e9ee9b46e16cff05

defaults/main.yml

@@ -38,30 +38,17 @@ heat_install_method: "source"
 
 heat_git_repo: https://git.openstack.org/openstack/heat
 heat_git_install_branch: master
-heat_developer_mode: false
-heat_developer_constraints:
+heat_upper_constraints_url: "{{ requirements_git_url | default('https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt?h=' ~ requirements_git_install_branch | default('master')) }}"
+heat_git_constraints:
   - "git+{{ heat_git_repo }}@{{ heat_git_install_branch }}#egg=openstack-heat"
+  - "--constraint {{ heat_upper_constraints_url }}"
 
-# TODO(odyssey4me):
-# This can be simplified once all the roles are using
-# python_venv_build. We can then switch to using a
-# set of constraints in pip.conf inside the venv,
-# perhaps prepared by giving a giving a list of
-# constraints to the role.
-heat_pip_install_args: >-
-  {{ heat_developer_mode | ternary(pip_install_developer_constraints | default('--constraint /opt/developer-pip-constraints.txt'), '') }}
-  {{ (pip_install_upper_constraints is defined) | ternary('--constraint ' + pip_install_upper_constraints | default(''), '') }}
-  {{ pip_install_options | default('') }}
+heat_pip_install_args: "{{ pip_install_options | default('') }}"
 
 # Name of the virtual env to deploy into
 heat_venv_tag: "{{ venv_tag | default('untagged') }}"
 heat_bin: "{{ _heat_bin }}"
 
-# venv_download, even when true, will use the fallback method of building the
-# venv from scratch if the venv download fails.
-heat_venv_download: "{{ not heat_developer_mode | bool }}"
-heat_venv_download_url: http://127.0.0.1/venvs/untagged/ubuntu/heat.tgz
-
 heat_fatal_deprecations: False
 
 heat_clients_endpoint: internalURL

tasks/heat_install.yml

@@ -36,6 +36,19 @@
   retries: 5
   delay: 2
 
-- name: Install heat packages from PIP
-  include_tasks: heat_install_source.yml
+- name: Install the python venv
+  import_role:
+    name: "python_venv_build"
+  vars:
+    venv_build_constraints: "{{ heat_git_constraints }}"
+    venv_install_destination_path: "{{ heat_bin | dirname }}"
+    venv_install_distro_package_list: "{{ heat_distro_packages }}"
+    venv_pip_install_args: "{{ heat_pip_install_args }}"
+    venv_pip_packages: >-
+      {{ heat_pip_packages | union(heat_user_pip_packages) +
+         (heat_oslomsg_amqp1_enabled | bool) | ternary(heat_optional_oslomsg_amqp1_pip_packages, []) }}
+    venv_facts_when_changed:
+      - section: "heat"
+        option: "venv_tag"
+        value: "{{ heat_venv_tag }}"
   when: heat_install_method == 'source'

tasks/heat_install_source.yml

@@ -1,50 +0,0 @@
----
-# Copyright 2014, Rackspace US, Inc.
-#
-# 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.
-
-# TODO(odyssey4me):
-# This can be simplified once all the roles are using
-# python_venv_build. We can then switch to using a
-# set of constraints in pip.conf inside the venv,
-# perhaps prepared by giving a giving a list of
-# constraints to the role.
-- name: Create developer mode constraint file
-  copy:
-    dest: "/opt/developer-pip-constraints.txt"
-    content: |
-      {% for item in heat_developer_constraints %}
-      {{ item }}
-      {% endfor %}
-  when: heat_developer_mode | bool
-
-- name: Ensure remote wheel building is disabled in developer mode
-  set_fact:
-    venv_build_host: "{{ inventory_hostname }}"
-  when:
-    - heat_developer_mode | bool
-
-- name: Install the python venv
-  include_role:
-    name: "python_venv_build"
-  vars:
-    venv_install_destination_path: "{{ heat_bin | dirname }}"
-    venv_install_distro_package_list: "{{ heat_distro_packages }}"
-    venv_pip_install_args: "{{ heat_pip_install_args }}"
-    venv_pip_packages: >-
-      {{ heat_pip_packages | union(heat_user_pip_packages) +
-         (heat_oslomsg_amqp1_enabled | bool) | ternary(heat_optional_oslomsg_amqp1_pip_packages, []) }}
-    venv_facts_when_changed:
-      - section: "heat"
-        option: "venv_tag"
-        value: "{{ heat_venv_tag }}"