Update role for new source build process

The variables glance_developer_mode and glance_venv_download
no longer carry any meaning. This review changes glance 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.

We also change include_tasks to import_tasks and include_role
to import_role so that the tags in the python_venv_build role
will work.

Depends-On: https://review.openstack.org/620339
Depends-On: https://review.openstack.org/637240
Depends-On: https://review.openstack.org/637503
Depends-On: https://review.openstack.org/644391
Change-Id: I1e5bd71b164676031fcde9890be43554e67048bf

defaults/main.yml

@@ -32,20 +32,12 @@ glance_pip_package_state: "latest"
 
 glance_git_repo: https://git.openstack.org/openstack/glance
 glance_git_install_branch: master
-glance_developer_mode: false
-glance_developer_constraints:
+glance_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')) }}"
+glance_git_constraints:
   - "git+{{ glance_git_repo }}@{{ glance_git_install_branch }}#egg=glance"
+  - "--constraint {{ glance_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.
-glance_pip_install_args: >-
-  {{ glance_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('') }}
+glance_pip_install_args: "{{ pip_install_options | default('') }}"
 
 # Name of the virtual env to deploy into
 glance_venv_tag: "{{ venv_tag | default('untagged') }}"
@@ -57,11 +49,6 @@ glance_bin: "{{ _glance_bin }}"
 #  glance_etc_dir: "/usr/local/etc/glance"
 glance_etc_dir: "/etc/glance"
 
-# venv_download, even when true, will use the fallback method of building the
-# venv from scratch if the venv download fails.
-glance_venv_download: "{{ not glance_developer_mode | bool }}"
-glance_venv_download_url: http://127.0.0.1/venvs/untagged/ubuntu/glance.tgz
-
 # Enable/Disable Ceilometer
 glance_ceilometer_enabled: False
 

tasks/glance_install.yml

@@ -127,8 +127,27 @@
   retries: 5
   delay: 2
 
-- name: Install glance packages from PIP
-  include_tasks: glance_install_source.yml
+- name: Install the python venv
+  import_role:
+    name: "python_venv_build"
+    private: yes
+  vars:
+    venv_build_constraints: "{{ glance_git_constraints }}"
+    venv_build_distro_package_list: "{{ glance_devel_distro_packages }}"
+    venv_install_destination_path: "{{ glance_bin | dirname }}"
+    venv_install_distro_package_list: "{{ glance_distro_packages }}"
+    venv_pip_install_args: "{{ glance_pip_install_args }}"
+    venv_pip_packages: >-
+      {{ glance_pip_packages |
+           union(glance_user_pip_packages) |
+             union(((glance_oslomsg_amqp1_enabled | bool) | ternary(glance_optional_oslomsg_amqp1_pip_packages, []))) }}
+    venv_facts_when_changed:
+      - section: "glance"
+        option: "need_service_restart"
+        value: True
+      - section: "glance"
+        option: "venv_tag"
+        value: "{{ glance_venv_tag }}"
   when: glance_install_method == 'source'
 
 - name: Record the need for a service restart

tasks/main.yml

@@ -40,11 +40,11 @@
   tags:
     - always
 
-- include_tasks: glance_install.yml
+- import_tasks: glance_install.yml
   tags:
     - glance-install
 
-- include_tasks: glance_post_install.yml
+- import_tasks: glance_post_install.yml
   tags:
     - glance-config