From 286871b9b59a652c89b8d4b911ce208c14d275b1 Mon Sep 17 00:00:00 2001
From: John M <mail@john.pub>
Date: Sun, 28 Nov 2021 04:31:06 +0000
Subject: [PATCH] Add self-build for Dimension

Add a self-build option for the Dimension Dockerfile.
 - This helps further support arm64 hosts (i.e. A1.Flex w/Oracle)
---
 docs/self-building.md                         |  1 +
 group_vars/matrix_servers                     |  2 ++
 roles/matrix-dimension/defaults/main.yml      |  8 ++++++-
 .../matrix-dimension/tasks/setup_install.yml  | 23 +++++++++++++++++++
 4 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/docs/self-building.md b/docs/self-building.md
index 82726bb78..9ff28e4c5 100644
--- a/docs/self-building.md
+++ b/docs/self-building.md
@@ -18,6 +18,7 @@ List of roles where self-building the Docker image is currently possible:
 - `matrix-registration`
 - `matrix-coturn`
 - `matrix-corporal`
+- `matrix-dimension`
 - `matrix-ma1sd`
 - `matrix-mailer`
 - `matrix-bridge-appservice-irc`
diff --git a/group_vars/matrix_servers b/group_vars/matrix_servers
index 7b2a74947..64ec0bd12 100755
--- a/group_vars/matrix_servers
+++ b/group_vars/matrix_servers
@@ -1045,6 +1045,8 @@ matrix_coturn_container_additional_volumes: |
 
 matrix_dimension_enabled: false
 
+matrix_dimension_container_image_self_build: "{{ matrix_architecture != 'amd64' }}"
+
 # Normally, matrix-nginx-proxy is enabled and nginx can reach Dimension over the container network.
 # If matrix-nginx-proxy is not enabled, or you otherwise have a need for it, you can expose
 # the Dimension HTTP port to the local host.
diff --git a/roles/matrix-dimension/defaults/main.yml b/roles/matrix-dimension/defaults/main.yml
index fc1f17a65..6e1ad512d 100644
--- a/roles/matrix-dimension/defaults/main.yml
+++ b/roles/matrix-dimension/defaults/main.yml
@@ -10,10 +10,16 @@ matrix_dimension_admins: []
 # Whether to allow Dimension widgets serve websites with invalid or self signed SSL certificates
 matrix_dimension_widgets_allow_self_signed_ssl_certificates: false
 
+matrix_dimension_container_image_self_build: false
+matrix_dimension_container_image_self_build_repo: "https://github.com/turt2live/matrix-dimension.git"
+matrix_dimension_container_image_self_build_branch: master
+
 matrix_dimension_base_path: "{{ matrix_base_data_path }}/dimension"
+matrix_dimension_docker_src_files_path: "{{ matrix_base_data_path }}/docker-src/dimension"
 
 matrix_dimension_version: latest
-matrix_dimension_docker_image: "{{ matrix_container_global_registry_prefix }}turt2live/matrix-dimension:{{ matrix_dimension_version }}"
+matrix_dimension_docker_image: "{{ matrix_dimension_docker_image_name_prefix }}turt2live/matrix-dimension:{{ matrix_dimension_version }}"
+matrix_dimension_docker_image_name_prefix: "{{ 'localhost/' if matrix_dimension_container_image_self_build else matrix_container_global_registry_prefix }}"
 matrix_dimension_docker_image_force_pull: "{{ matrix_dimension_docker_image.endswith(':latest') }}"
 
 # List of systemd services that matrix-dimension.service depends on.
diff --git a/roles/matrix-dimension/tasks/setup_install.yml b/roles/matrix-dimension/tasks/setup_install.yml
index 804be88d7..c75fc0b96 100644
--- a/roles/matrix-dimension/tasks/setup_install.yml
+++ b/roles/matrix-dimension/tasks/setup_install.yml
@@ -90,6 +90,29 @@
     source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
     force_source: "{{ matrix_dimension_docker_image_force_pull if ansible_version.major > 2 or ansible_version.minor >= 8 else omit }}"
     force: "{{ omit if ansible_version.major > 2 or ansible_version.minor >= 8 else matrix_dimension_docker_image_force_pull }}"
+  when: "not matrix_dimension_container_image_self_build|bool"
+  register: matrix_dimension_pull_results
+
+- name: Ensure dimension repository is present on self-build
+  git:
+    repo: "{{ matrix_dimension_container_image_self_build_repo }}"
+    dest: "{{ matrix_dimension_docker_src_files_path }}"
+    version: "{{ matrix_dimension_container_image_self_build_branch }}"
+    force: "yes"
+  when: "matrix_dimension_container_image_self_build|bool"
+  register: matrix_dimension_git_pull_results
+
+- name: Ensure Dimension Docker image is built
+  docker_image:
+    name: "{{ matrix_dimension_docker_image }}"
+    source: build
+    force_source: "{{ matrix_dimension_git_pull_results.changed if ansible_version.major > 2 or ansible_version.minor >= 8 else omit }}"
+    force: "{{ omit if ansible_version.major > 2 or ansible_version.minor >= 8 else matrix_dimension_git_pull_results.changed }}"
+    build:
+      dockerfile: Dockerfile
+      path: "{{ matrix_dimension_docker_src_files_path }}"
+      pull: yes
+  when: "matrix_dimension_container_image_self_build|bool"
 
 - name: Ensure matrix-dimension.service installed
   template: