Update role for new source build process

The variables swift_developer_mode and swift_venv_download
no longer carry any meaning. This review changes swift 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 source build 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.

Change-Id: I9233e4daff0034339750477fd21d5cfa181afd83

defaults/main.yml

@@ -42,32 +42,18 @@ swift_git_install_branch: master
 swift_swift3_git_repo: https://git.openstack.org/openstack/swift3
 swift_swift3_git_install_branch: master
 
-# Developer mode settings
-swift_developer_mode: false
-swift_developer_constraints:
+swift_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')) }}"
+swift_git_constraints:
   - "git+{{ swift_git_repo }}@{{ swift_git_install_branch }}#egg=swift"
   - "git+{{ swift_swift3_git_repo }}@{{ swift_swift3_git_install_branch }}#egg=swift3"
+  - "--constraint {{ swift_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.
-swift_pip_install_args: >-
-  {{ swift_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('') }}
+swift_pip_install_args: "{{ pip_install_options | default('') }}"
 
 # Name of the virtual env to deploy into
 swift_venv_tag: "{{ venv_tag | default('untagged') }}"
 swift_bin: "{{ _swift_bin }}"
 
-# venv_download, even when true, will use the fallback method of building the
-# venv from scratch if the venv download fails.
-swift_venv_download: "{{ not swift_developer_mode | bool and not swift_pypy_enabled | bool }}"
-swift_venv_download_url: http://127.0.0.1/venvs/untagged/ubuntu/swift.tgz
-
 # Set the full path to the swift recon cron
 recon_cron_path: "{{ swift_bin }}/swift-recon-cron"
 

tasks/swift_install.yml

@@ -36,8 +36,19 @@
   retries: 5
   delay: 2
 
-- name: Install swift packages from PIP
-  include_tasks: swift_install_source.yml
+- name: Install the python venv
+  import_role:
+    name: "python_venv_build"
+  vars:
+    venv_build_constraints: "{{ swift_git_constraints }}"
+    venv_build_distro_package_list: "{{ swift_devel_distro_packages }}"
+    venv_install_destination_path: "{{ swift_bin | dirname }}"
+    venv_pip_install_args: "{{ swift_pip_install_args }}"
+    venv_pip_packages: "{{ swift_pip_packages }}"
+    venv_facts_when_changed:
+      - section: "swift"
+        option: "venv_tag"
+        value: "{{ swift_venv_tag }}"
   when: swift_install_method == 'source'
 
 - include_tasks: swift_pypy_setup.yml

tasks/swift_install_source.yml

@@ -1,50 +0,0 @@
----
-# Copyright 2018, SUSE Linux GmbH.
-#
-# 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 swift_developer_constraints %}
-      {{ item }}
-      {% endfor %}
-  when:
-    - swift_developer_mode | bool
-
-- name: Ensure remote wheel building is disabled in developer mode
-  set_fact:
-    venv_build_host: "{{ ansible_hostname }}"
-  when:
-    - swift_developer_mode | bool
-
-- name: Install the python venv
-  include_role:
-    name: "python_venv_build"
-    private: yes
-  vars:
-    venv_build_distro_package_list: "{{ swift_devel_distro_packages }}"
-    venv_install_destination_path: "{{ swift_bin | dirname }}"
-    venv_pip_install_args: "{{ swift_pip_install_args }}"
-    venv_pip_packages: "{{ swift_pip_packages }}"
-    venv_facts_when_changed:
-      - section: "swift"
-        option: "venv_tag"
-        value: "{{ swift_venv_tag }}"