From ca361af61633a3032c87b0d212c7ddf4bede341f Mon Sep 17 00:00:00 2001
From: Aaron Raimist <aaron@raim.ist>
Date: Sat, 15 May 2021 04:23:36 -0500
Subject: [PATCH] Add Hydrogen

---
 group_vars/matrix_servers                     |  27 ++++
 roles/matrix-base/defaults/main.yml           |   3 +
 .../tasks/init.yml                            |   2 +-
 .../tasks/init.yml                            |   2 +-
 .../tasks/init.yml                            |   2 +-
 .../tasks/init.yml                            |   2 +-
 .../tasks/init.yml                            |   2 +-
 .../tasks/init.yml                            |   2 +-
 .../tasks/init.yml                            |   2 +-
 .../tasks/init.yml                            |   2 +-
 .../tasks/init.yml                            |   2 +-
 roles/matrix-client-element/tasks/init.yml    |   2 +-
 .../matrix-client-hydrogen/defaults/main.yml  |  67 ++++++++++
 roles/matrix-client-hydrogen/tasks/init.yml   |  10 ++
 roles/matrix-client-hydrogen/tasks/main.yml   |  15 +++
 .../tasks/self_check.yml                      |  22 ++++
 roles/matrix-client-hydrogen/tasks/setup.yml  | 119 ++++++++++++++++++
 .../templates/config.json.j2                  |   3 +
 .../templates/nginx.conf.j2                   |  66 ++++++++++
 .../systemd/matrix-client-hydrogen.service.j2 |  40 ++++++
 roles/matrix-coturn/tasks/init.yml            |   2 +-
 roles/matrix-ma1sd/tasks/init.yml             |   2 +-
 roles/matrix-nginx-proxy/defaults/main.yml    |   7 ++
 .../tasks/setup_nginx_proxy.yml               |   7 ++
 .../conf.d/matrix-client-hydrogen.conf.j2     |  84 +++++++++++++
 roles/matrix-synapse/tasks/init.yml           |   2 +-
 setup.yml                                     |   1 +
 27 files changed, 484 insertions(+), 13 deletions(-)
 create mode 100644 roles/matrix-client-hydrogen/defaults/main.yml
 create mode 100644 roles/matrix-client-hydrogen/tasks/init.yml
 create mode 100644 roles/matrix-client-hydrogen/tasks/main.yml
 create mode 100644 roles/matrix-client-hydrogen/tasks/self_check.yml
 create mode 100644 roles/matrix-client-hydrogen/tasks/setup.yml
 create mode 100644 roles/matrix-client-hydrogen/templates/config.json.j2
 create mode 100644 roles/matrix-client-hydrogen/templates/nginx.conf.j2
 create mode 100644 roles/matrix-client-hydrogen/templates/systemd/matrix-client-hydrogen.service.j2
 create mode 100644 roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-client-hydrogen.conf.j2

diff --git a/group_vars/matrix_servers b/group_vars/matrix_servers
index 517e69224..f5ed72c7e 100755
--- a/group_vars/matrix_servers
+++ b/group_vars/matrix_servers
@@ -1242,6 +1242,8 @@ matrix_ssl_domains_to_obtain_certificates_for: |
     +
     ([matrix_nginx_proxy_proxy_riot_compat_redirect_hostname] if matrix_nginx_proxy_proxy_riot_compat_redirect_enabled else [])
     +
+    ([matrix_server_fqn_hydrogen] if matrix_client_hydrogen_enabled else [])
+    +
     ([matrix_server_fqn_dimension] if matrix_dimension_enabled else [])
     +
     ([matrix_server_fqn_bot_go_neb] if matrix_bot_go_neb_enabled else [])
@@ -1545,6 +1547,31 @@ matrix_client_element_jitsi_preferredDomain: "{{ matrix_server_fqn_jitsi if matr
 
 
 
+######################################################################
+#
+# matrix-client-hydrogen
+#
+######################################################################
+
+matrix_client_hydrogen_enabled: false
+
+# Normally, matrix-nginx-proxy is enabled and nginx can reach Hydrogen over the container network.
+# If matrix-nginx-proxy is not enabled, or you otherwise have a need for it, you can expose
+# the HTTP port to the local host.
+matrix_client_hydrogen_container_http_host_bind_port: "{{ '' if matrix_nginx_proxy_enabled else '127.0.0.1:8768' }}"
+
+matrix_client_hydrogen_default_hs_url: "{{ matrix_homeserver_url }}"
+
+matrix_client_hydrogen_self_check_validate_certificates: "{{ false if matrix_ssl_retrieval_method == 'self-signed' else true }}"
+
+######################################################################
+#
+# /matrix-client-hydrogen
+#
+######################################################################
+
+
+
 ######################################################################
 #
 # matrix-synapse
diff --git a/roles/matrix-base/defaults/main.yml b/roles/matrix-base/defaults/main.yml
index d1d3bf27e..ef30ad678 100644
--- a/roles/matrix-base/defaults/main.yml
+++ b/roles/matrix-base/defaults/main.yml
@@ -15,6 +15,9 @@ matrix_server_fqn_matrix: "matrix.{{ matrix_domain }}"
 # This and the Matrix FQN (see above) are expected to be on the same server.
 matrix_server_fqn_element: "element.{{ matrix_domain }}"
 
+# This is where you access the Hydrogen web client from (if enabled via matrix_client_hydrogen_enabled; disabled by default).
+matrix_server_fqn_hydrogen: "hydrogen.{{ matrix_domain }}"
+
 # This is where you access the Dimension.
 matrix_server_fqn_dimension: "dimension.{{ matrix_domain }}"
 
diff --git a/roles/matrix-bridge-mautrix-facebook/tasks/init.yml b/roles/matrix-bridge-mautrix-facebook/tasks/init.yml
index 9e1273163..97b370d9a 100644
--- a/roles/matrix-bridge-mautrix-facebook/tasks/init.yml
+++ b/roles/matrix-bridge-mautrix-facebook/tasks/init.yml
@@ -16,7 +16,7 @@
   when: matrix_mautrix_facebook_enabled|bool
 
 # ansible lower than 2.8, does not support docker_image build parameters
-# for self buildig it is explicitly needed, so we rather fail here
+# for self building it is explicitly needed, so we rather fail here
 - name: Fail if running on Ansible lower than 2.8 and trying self building
   fail:
     msg: "To self build Mautrix Facebook image, you should usa ansible 2.8 or higher. E.g. pip contains such packages."
diff --git a/roles/matrix-bridge-mautrix-hangouts/tasks/init.yml b/roles/matrix-bridge-mautrix-hangouts/tasks/init.yml
index 9209fa40f..9824891bf 100644
--- a/roles/matrix-bridge-mautrix-hangouts/tasks/init.yml
+++ b/roles/matrix-bridge-mautrix-hangouts/tasks/init.yml
@@ -62,7 +62,7 @@
   when: "matrix_mautrix_hangouts_enabled|bool and (matrix_nginx_proxy_enabled is not defined or matrix_nginx_proxy_enabled|bool == false)"
 
 # ansible lower than 2.8, does not support docker_image build parameters
-# for self buildig it is explicitly needed, so we rather fail here
+# for self building it is explicitly needed, so we rather fail here
 - name: Fail if running on Ansible lower than 2.8 and trying self building
   fail:
     msg: "To self build Mautrix Hangouts image, you should usa ansible 2.8 or higher. E.g. pip contains such packages."
diff --git a/roles/matrix-bridge-mautrix-instagram/tasks/init.yml b/roles/matrix-bridge-mautrix-instagram/tasks/init.yml
index 2b407358d..cd46d03d5 100644
--- a/roles/matrix-bridge-mautrix-instagram/tasks/init.yml
+++ b/roles/matrix-bridge-mautrix-instagram/tasks/init.yml
@@ -16,7 +16,7 @@
   when: matrix_mautrix_instagram_enabled|bool
 
 # ansible lower than 2.8, does not support docker_image build parameters
-# for self buildig it is explicitly needed, so we rather fail here
+# for self building it is explicitly needed, so we rather fail here
 - name: Fail if running on Ansible lower than 2.8 and trying self building
   fail:
     msg: "To self build Mautrix instagram image, you should usa ansible 2.8 or higher. E.g. pip contains such packages."
diff --git a/roles/matrix-bridge-mx-puppet-discord/tasks/init.yml b/roles/matrix-bridge-mx-puppet-discord/tasks/init.yml
index 4d8444e11..73f3507e9 100644
--- a/roles/matrix-bridge-mx-puppet-discord/tasks/init.yml
+++ b/roles/matrix-bridge-mx-puppet-discord/tasks/init.yml
@@ -16,7 +16,7 @@
   when: matrix_mx_puppet_discord_enabled|bool
 
 # ansible lower than 2.8, does not support docker_image build parameters
-# for self buildig it is explicitly needed, so we rather fail here
+# for self building it is explicitly needed, so we rather fail here
 - name: Fail if running on Ansible lower than 2.8 and trying self building
   fail:
     msg: "To self build Puppet Slack image, you should usa ansible 2.8 or higher. E.g. pip contains such packages."
diff --git a/roles/matrix-bridge-mx-puppet-groupme/tasks/init.yml b/roles/matrix-bridge-mx-puppet-groupme/tasks/init.yml
index 1f00e8a5a..f2657d2a6 100644
--- a/roles/matrix-bridge-mx-puppet-groupme/tasks/init.yml
+++ b/roles/matrix-bridge-mx-puppet-groupme/tasks/init.yml
@@ -16,7 +16,7 @@
   when: matrix_mx_puppet_groupme_enabled|bool
 
 # ansible lower than 2.8, does not support docker_image build parameters
-# for self buildig it is explicitly needed, so we rather fail here
+# for self building it is explicitly needed, so we rather fail here
 - name: Fail if running on Ansible lower than 2.8 and trying self building
   fail:
     msg: "To self build Puppet Slack image, you should usa ansible 2.8 or higher. E.g. pip contains such packages."
diff --git a/roles/matrix-bridge-mx-puppet-skype/tasks/init.yml b/roles/matrix-bridge-mx-puppet-skype/tasks/init.yml
index 605ea4928..75ced0a26 100644
--- a/roles/matrix-bridge-mx-puppet-skype/tasks/init.yml
+++ b/roles/matrix-bridge-mx-puppet-skype/tasks/init.yml
@@ -16,7 +16,7 @@
   when: matrix_mx_puppet_skype_enabled|bool
 
 # ansible lower than 2.8, does not support docker_image build parameters
-# for self buildig it is explicitly needed, so we rather fail here
+# for self building it is explicitly needed, so we rather fail here
 - name: Fail if running on Ansible lower than 2.8 and trying self building
   fail:
     msg: "To self build Puppet Skype image, you should usa ansible 2.8 or higher. E.g. pip contains such packages."
diff --git a/roles/matrix-bridge-mx-puppet-slack/tasks/init.yml b/roles/matrix-bridge-mx-puppet-slack/tasks/init.yml
index 16afef20b..68c305bbb 100644
--- a/roles/matrix-bridge-mx-puppet-slack/tasks/init.yml
+++ b/roles/matrix-bridge-mx-puppet-slack/tasks/init.yml
@@ -63,7 +63,7 @@
   when: "matrix_mx_puppet_slack_enabled|bool and matrix_nginx_proxy_enabled is not defined"
 
 # ansible lower than 2.8, does not support docker_image build parameters
-# for self buildig it is explicitly needed, so we rather fail here
+# for self building it is explicitly needed, so we rather fail here
 - name: Fail if running on Ansible lower than 2.8 and trying self building
   fail:
     msg: "To self build Puppet Slack image, you should usa ansible 2.8 or higher. E.g. pip contains such packages."
diff --git a/roles/matrix-bridge-mx-puppet-steam/tasks/init.yml b/roles/matrix-bridge-mx-puppet-steam/tasks/init.yml
index 9687944fc..4c71ef85c 100644
--- a/roles/matrix-bridge-mx-puppet-steam/tasks/init.yml
+++ b/roles/matrix-bridge-mx-puppet-steam/tasks/init.yml
@@ -16,7 +16,7 @@
   when: matrix_mx_puppet_steam_enabled|bool
 
 # ansible lower than 2.8, does not support docker_image build parameters
-# for self buildig it is explicitly needed, so we rather fail here
+# for self building it is explicitly needed, so we rather fail here
 - name: Fail if running on Ansible lower than 2.8 and trying self building
   fail:
     msg: "To self build Puppet Slack image, you should usa ansible 2.8 or higher. E.g. pip contains such packages."
diff --git a/roles/matrix-bridge-mx-puppet-twitter/tasks/init.yml b/roles/matrix-bridge-mx-puppet-twitter/tasks/init.yml
index 86f302379..a048a0025 100644
--- a/roles/matrix-bridge-mx-puppet-twitter/tasks/init.yml
+++ b/roles/matrix-bridge-mx-puppet-twitter/tasks/init.yml
@@ -63,7 +63,7 @@
   when: "matrix_mx_puppet_twitter_enabled|bool and matrix_nginx_proxy_enabled is not defined"
 
 # ansible lower than 2.8, does not support docker_image build parameters
-# for self buildig it is explicitly needed, so we rather fail here
+# for self building it is explicitly needed, so we rather fail here
 - name: Fail if running on Ansible lower than 2.8 and trying self building
   fail:
     msg: "To self build Puppet Twitter image, you should usa ansible 2.8 or higher. E.g. pip contains such packages."
diff --git a/roles/matrix-client-element/tasks/init.yml b/roles/matrix-client-element/tasks/init.yml
index a42e31437..0fb47a8b9 100644
--- a/roles/matrix-client-element/tasks/init.yml
+++ b/roles/matrix-client-element/tasks/init.yml
@@ -3,7 +3,7 @@
   when: matrix_client_element_enabled|bool
 
 # ansible lower than 2.8, does not support docker_image build parameters
-# for self buildig it is explicitly needed, so we rather fail here
+# for self building it is explicitly needed, so we rather fail here
 - name: Fail if running on Ansible lower than 2.8 and trying self building
   fail:
     msg: "To self build the Element image, you should usa ansible 2.8 or higher. E.g. pip contains such packages."
diff --git a/roles/matrix-client-hydrogen/defaults/main.yml b/roles/matrix-client-hydrogen/defaults/main.yml
new file mode 100644
index 000000000..cf6e9a0cf
--- /dev/null
+++ b/roles/matrix-client-hydrogen/defaults/main.yml
@@ -0,0 +1,67 @@
+matrix_client_hydrogen_enabled: true
+
+# as of 2021-05-15 the pre-built images were not working so self building is enabled by default
+matrix_client_hydrogen_container_image_self_build: true
+matrix_client_hydrogen_container_image_self_build_repo: "https://github.com/vector-im/hydrogen-web.git"
+
+matrix_client_hydrogen_version: v0.1.51
+matrix_client_hydrogen_docker_image: "{{ matrix_client_hydrogen_docker_image_name_prefix }}vectorim/hydrogen-web:{{ matrix_client_hydrogen_version }}"
+matrix_client_hydrogen_docker_image_name_prefix: "{{ 'localhost/' if matrix_client_hydrogen_container_image_self_build }}"
+matrix_client_hydrogen_docker_image_force_pull: "{{ matrix_client_hydrogen_docker_image.endswith(':latest') }}"
+
+matrix_client_hydrogen_data_path: "{{ matrix_base_data_path }}/client-hydrogen"
+matrix_client_hydrogen_docker_src_files_path: "{{ matrix_client_hydrogen_data_path }}/docker-src"
+
+# Controls whether the container exposes its HTTP port (tcp/8080 in the container).
+#
+# Takes an "<ip>:<port>" or "<port>" value (e.g. "127.0.0.1:8768"), or empty string to not expose.
+matrix_client_hydrogen_container_http_host_bind_port: ''
+
+# A list of extra arguments to pass to the container
+matrix_client_hydrogen_container_extra_arguments: []
+
+# List of systemd services that matrix-client-hydrogen.service depends on
+matrix_client_hydrogen_systemd_required_services_list: ['docker.service']
+
+# Controls whether the self-check feature should validate SSL certificates.
+matrix_client_hydrogen_self_check_validate_certificates: true
+
+# config.json
+matrix_client_hydrogen_default_hs_url: ""
+
+# Default Hydrogen configuration template which covers the generic use case.
+# You can customize it by controlling the various variables inside it.
+#
+# For a more advanced customization, you can extend the default (see `matrix_client_hydrogen_configuration_extension_json`)
+# or completely replace this variable with your own template.
+#
+# The side-effect of this lookup is that Ansible would even parse the JSON for us, returning a dict.
+# This is unlike what it does when looking up YAML template files (no automatic parsing there).
+matrix_client_hydrogen_configuration_default: "{{ lookup('template', 'templates/config.json.j2') }}"
+
+# Your custom JSON configuration for Hydrogen should go to `matrix_client_hydrogen_configuration_extension_json`.
+# This configuration extends the default starting configuration (`matrix_client_hydrogen_configuration_default`).
+#
+# You can override individual variables from the default configuration, or introduce new ones.
+#
+# If you need something more special, you can take full control by
+# completely redefining `matrix_client_hydrogen_configuration_default`.
+#
+# Example configuration extension follows:
+#
+# matrix_client_hydrogen_configuration_extension_json: |
+#  {
+#    "push": {
+#      "appId": "io.element.hydrogen.web",
+#      "gatewayUrl": "https://matrix.org",
+#      "applicationServerKey": "BC-gpSdVHEXhvHSHS0AzzWrQoukv2BE7KzpoPO_FfPacqOo3l1pdqz7rSgmB04pZCWaHPz7XRe6fjLaC-WPDopM"
+#    },
+#    "defaultHomeServer": "matrix.org"
+#  }
+matrix_client_hydrogen_configuration_extension_json: '{}'
+
+matrix_client_hydrogen_configuration_extension: "{{ matrix_client_hydrogen_configuration_extension_json|from_json if matrix_client_hydrogen_configuration_extension_json|from_json is mapping else {} }}"
+
+# Holds the final Hydrogen configuration (a combination of the default and its extension).
+# You most likely don't need to touch this variable. Instead, see `matrix_client_hydrogen_configuration_default`.
+matrix_client_hydrogen_configuration: "{{ matrix_client_hydrogen_configuration_default|combine(matrix_client_hydrogen_configuration_extension, recursive=True) }}"
diff --git a/roles/matrix-client-hydrogen/tasks/init.yml b/roles/matrix-client-hydrogen/tasks/init.yml
new file mode 100644
index 000000000..be72a9835
--- /dev/null
+++ b/roles/matrix-client-hydrogen/tasks/init.yml
@@ -0,0 +1,10 @@
+- set_fact:
+    matrix_systemd_services_list: "{{ matrix_systemd_services_list + ['matrix-client-hydrogen.service'] }}"
+  when: matrix_client_hydrogen_enabled|bool
+
+# ansible lower than 2.8, does not support docker_image build parameters
+# for self building it is explicitly needed, so we rather fail here
+- name: Fail if running on Ansible lower than 2.8 and trying self building
+  fail:
+    msg: "To self build the Hydrogen image, you should usa ansible 2.8 or higher. E.g. pip contains such packages."
+  when: "ansible_version.major == 2 and ansible_version.minor < 8 and matrix_client_hydrogen_container_image_self_build"
diff --git a/roles/matrix-client-hydrogen/tasks/main.yml b/roles/matrix-client-hydrogen/tasks/main.yml
new file mode 100644
index 000000000..6534db05d
--- /dev/null
+++ b/roles/matrix-client-hydrogen/tasks/main.yml
@@ -0,0 +1,15 @@
+- import_tasks: "{{ role_path }}/tasks/init.yml"
+  tags:
+    - always
+
+- import_tasks: "{{ role_path }}/tasks/validate_config.yml"
+  when: "run_setup|bool and matrix_client_hydrogen_enabled|bool"
+  tags:
+    - setup-all
+    - setup-client-hydrogen
+
+- import_tasks: "{{ role_path }}/tasks/setup.yml"
+  when: run_setup|bool
+  tags:
+    - setup-all
+    - setup-client-hydrogen
diff --git a/roles/matrix-client-hydrogen/tasks/self_check.yml b/roles/matrix-client-hydrogen/tasks/self_check.yml
new file mode 100644
index 000000000..c7407dcd5
--- /dev/null
+++ b/roles/matrix-client-hydrogen/tasks/self_check.yml
@@ -0,0 +1,22 @@
+---
+
+- set_fact:
+    matrix_client_hydrogen_url_endpoint_public: "https://{{ matrix_server_fqn_hydrogen }}"
+
+- name: Check Hydrogen
+  uri:
+    url: "{{ matrix_client_hydrogen_url_endpoint_public }}"
+    follow_redirects: none
+    validate_certs: "{{ matrix_client_hydrogen_self_check_validate_certificates }}"
+  register: matrix_client_hydrogen_self_check_result
+  check_mode: no
+  ignore_errors: true
+
+- name: Fail if Hydrogen not working
+  fail:
+    msg: "Failed checking Hydrogen is up at `{{ matrix_server_fqn_hydrogen }}` (checked endpoint: `{{ matrix_client_hydrogen_url_endpoint_public }}`). Is Hydrogen running? Is port 443 open in your firewall? Full error: {{ matrix_client_hydrogen_self_check_result }}"
+  when: "matrix_client_hydrogen_self_check_result.failed or 'json' not in matrix_client_hydrogen_self_check_result"
+
+- name: Report working Hydrogen
+  debug:
+    msg: "Hydrogen at `{{ matrix_server_fqn_hydrogen }}` is working (checked endpoint: `{{ matrix_client_hydrogen_url_endpoint_public }}`)"
diff --git a/roles/matrix-client-hydrogen/tasks/setup.yml b/roles/matrix-client-hydrogen/tasks/setup.yml
new file mode 100644
index 000000000..3d9eea44e
--- /dev/null
+++ b/roles/matrix-client-hydrogen/tasks/setup.yml
@@ -0,0 +1,119 @@
+---
+
+#
+# Tasks related to setting up Hydrogen
+#
+
+- name: Ensure Hydrogen paths exists
+  file:
+    path: "{{ item.path }}"
+    state: directory
+    mode: 0750
+    owner: "{{ matrix_user_username }}"
+    group: "{{ matrix_user_groupname }}"
+  with_items:
+    - { path: "{{ matrix_client_hydrogen_data_path }}", when: true }
+    - { path: "{{ matrix_client_hydrogen_docker_src_files_path }}", when: "{{ matrix_client_hydrogen_container_image_self_build }}" }
+  when: matrix_client_hydrogen_enabled|bool and item.when
+
+- name: Ensure Hydrogen Docker image is pulled
+  docker_image:
+   name: "{{ matrix_client_hydrogen_docker_image }}"
+   source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
+   force_source: "{{ matrix_client_hydrogen_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_client_hydrogen_docker_image_force_pull }}"
+  when: matrix_client_hydrogen_enabled|bool and not matrix_client_hydrogen_container_image_self_build
+
+- name: Ensure Hydrogen repository is present on self-build
+  git:
+    repo: "{{ matrix_client_hydrogen_container_image_self_build_repo }}"
+    dest: "{{ matrix_client_hydrogen_docker_src_files_path }}"
+    version: "{{ matrix_client_hydrogen_docker_image.split(':')[1] }}"
+    force: "yes"
+  register: matrix_client_hydrogen_git_pull_results
+  when: "matrix_client_hydrogen_enabled|bool and matrix_client_hydrogen_container_image_self_build|bool"
+
+- name: Ensure Hydrogen Docker image is built
+  docker_image:
+    name: "{{ matrix_client_hydrogen_docker_image }}"
+    source: build
+    force_source: "{{ matrix_client_hydrogen_git_pull_results.changed }}"
+    build:
+      dockerfile: Dockerfile
+      path: "{{ matrix_client_hydrogen_docker_src_files_path }}"
+      pull: yes
+  when: "matrix_client_hydrogen_enabled|bool and matrix_client_hydrogen_container_image_self_build|bool"
+
+- name: Ensure Hydrogen configuration installed
+  copy:
+    content: "{{ matrix_client_hydrogen_configuration|to_nice_json }}"
+    dest: "{{ matrix_client_hydrogen_data_path }}/config.json"
+    mode: 0644
+    owner: "{{ matrix_user_username }}"
+    group: "{{ matrix_user_groupname }}"
+  when: matrix_client_hydrogen_enabled|bool
+
+- name: Ensure Hydrogen config files installed
+  template:
+    src: "{{ item.src }}"
+    dest: "{{ matrix_client_hydrogen_data_path }}/{{ item.name }}"
+    mode: 0644
+    owner: "{{ matrix_user_username }}"
+    group: "{{ matrix_user_groupname }}"
+  with_items:
+    - {src: "{{ role_path }}/templates/nginx.conf.j2", name: "nginx.conf"}
+  when: "matrix_client_hydrogen_enabled|bool and item.src is not none"
+
+- name: Ensure matrix-client-hydrogen.service installed
+  template:
+    src: "{{ role_path }}/templates/systemd/matrix-client-hydrogen.service.j2"
+    dest: "{{ matrix_systemd_path }}/matrix-client-hydrogen.service"
+    mode: 0644
+  register: matrix_client_hydrogen_systemd_service_result
+  when: matrix_client_hydrogen_enabled|bool
+
+- name: Ensure systemd reloaded after matrix-client-hydrogen.service installation
+  service:
+    daemon_reload: yes
+  when: "matrix_client_hydrogen_enabled and matrix_client_hydrogen_systemd_service_result.changed"
+
+#
+# Tasks related to getting rid of Hydrogen (if it was previously enabled)
+#
+
+- name: Check existence of matrix-client-hydrogen.service
+  stat:
+    path: "{{ matrix_systemd_path }}/matrix-client-hydrogen.service"
+  register: matrix_client_hydrogen_service_stat
+  when: "not matrix_client_hydrogen_enabled|bool"
+
+- name: Ensure matrix-client-hydrogen is stopped
+  service:
+    name: matrix-client-hydrogen
+    state: stopped
+    daemon_reload: yes
+  register: stopping_result
+  when: "not matrix_client_hydrogen_enabled|bool and matrix_client_hydrogen_service_stat.stat.exists"
+
+- name: Ensure matrix-client-hydrogen.service doesn't exist
+  file:
+    path: "{{ matrix_systemd_path }}/matrix-client-hydrogen.service"
+    state: absent
+  when: "not matrix_client_hydrogen_enabled|bool and matrix_client_hydrogen_service_stat.stat.exists"
+
+- name: Ensure systemd reloaded after matrix-client-hydrogen.service removal
+  service:
+    daemon_reload: yes
+  when: "not matrix_client_hydrogen_enabled|bool and matrix_client_hydrogen_service_stat.stat.exists"
+
+- name: Ensure Hydrogen paths doesn't exist
+  file:
+    path: "{{ matrix_client_hydrogen_data_path }}"
+    state: absent
+  when: "not matrix_client_hydrogen_enabled|bool"
+
+- name: Ensure Hydrogen Docker image doesn't exist
+  docker_image:
+    name: "{{ matrix_client_hydrogen_docker_image }}"
+    state: absent
+  when: "not matrix_client_hydrogen_enabled|bool"
diff --git a/roles/matrix-client-hydrogen/templates/config.json.j2 b/roles/matrix-client-hydrogen/templates/config.json.j2
new file mode 100644
index 000000000..62a849b0f
--- /dev/null
+++ b/roles/matrix-client-hydrogen/templates/config.json.j2
@@ -0,0 +1,3 @@
+{
+	"defaultHomeServer": {{ matrix_client_hydrogen_default_hs_url|string|to_json }}
+}
diff --git a/roles/matrix-client-hydrogen/templates/nginx.conf.j2 b/roles/matrix-client-hydrogen/templates/nginx.conf.j2
new file mode 100644
index 000000000..fba16bbdc
--- /dev/null
+++ b/roles/matrix-client-hydrogen/templates/nginx.conf.j2
@@ -0,0 +1,66 @@
+#jinja2: lstrip_blocks: "True"
+# This is a custom nginx configuration file that we use in the container (instead of the default one),
+# because it allows us to run nginx with a non-root user.
+#
+# For this to work, the default vhost file (`/etc/nginx/conf.d/default.conf`) also needs to be removed.
+# (mounting `/dev/null` over `/etc/nginx/conf.d/default.conf` works well)
+#
+# The following changes have been done compared to a default nginx configuration file:
+# - default server port is changed (80 -> 8080), so that a non-root user can bind it
+# - various temp paths are changed to `/tmp`, so that a non-root user can write to them
+# - the `user` directive was removed, as we don't want nginx to switch users
+
+worker_processes 1;
+
+error_log /var/log/nginx/error.log warn;
+pid /tmp/nginx.pid;
+
+
+events {
+	worker_connections 1024;
+}
+
+
+http {
+	proxy_temp_path /tmp/proxy_temp;
+	client_body_temp_path /tmp/client_temp;
+	fastcgi_temp_path /tmp/fastcgi_temp;
+	uwsgi_temp_path /tmp/uwsgi_temp;
+	scgi_temp_path /tmp/scgi_temp;
+
+	include /etc/nginx/mime.types;
+	default_type application/octet-stream;
+
+	log_format main '$remote_addr - $remote_user [$time_local] "$request" '
+					'$status $body_bytes_sent "$http_referer" '
+					'"$http_user_agent" "$http_x_forwarded_for"';
+
+	access_log /var/log/nginx/access.log main;
+
+	sendfile on;
+	#tcp_nopush on;
+
+	keepalive_timeout 65;
+
+	#gzip on;
+
+	server {
+		listen 8080;
+		server_name localhost;
+
+		root /usr/share/nginx/html;
+
+		location / {
+			index index.html index.htm;
+		}
+
+		location ~* ^/(config(.+)?\.json$|(.+)\.html$|i18n) {
+			expires -1;
+		}
+
+		error_page 500 502 503 504 /50x.html;
+		location = /50x.html {
+			root /usr/share/nginx/html;
+		}
+	}
+}
diff --git a/roles/matrix-client-hydrogen/templates/systemd/matrix-client-hydrogen.service.j2 b/roles/matrix-client-hydrogen/templates/systemd/matrix-client-hydrogen.service.j2
new file mode 100644
index 000000000..227d105b7
--- /dev/null
+++ b/roles/matrix-client-hydrogen/templates/systemd/matrix-client-hydrogen.service.j2
@@ -0,0 +1,40 @@
+#jinja2: lstrip_blocks: "True"
+[Unit]
+Description=Matrix Hydrogen Client
+{% for service in matrix_client_hydrogen_systemd_required_services_list %}
+Requires={{ service }}
+After={{ service }}
+{% endfor %}
+DefaultDependencies=no
+
+[Service]
+Type=simple
+Environment="HOME={{ matrix_systemd_unit_home_path }}"
+ExecStartPre=-{{ matrix_host_command_sh }} -c '{{ matrix_host_command_docker }} kill matrix-client-hydrogen 2>/dev/null'
+ExecStartPre=-{{ matrix_host_command_sh }} -c '{{ matrix_host_command_docker }} rm matrix-client-hydrogen 2>/dev/null'
+
+ExecStart={{ matrix_host_command_docker }} run --rm --name matrix-client-hydrogen \
+			--log-driver=none \
+			--user={{ matrix_user_uid }}:{{ matrix_user_gid }} \
+			--cap-drop=ALL \
+			--read-only \
+			--network={{ matrix_docker_network }} \
+			{% if matrix_client_hydrogen_container_http_host_bind_port %}
+			-p {{ matrix_client_hydrogen_container_http_host_bind_port }}:8080 \
+			{% endif %}
+			--tmpfs=/tmp:rw,noexec,nosuid,size=10m \
+			--mount type=bind,src={{ matrix_client_hydrogen_data_path }}/nginx.conf,dst=/etc/nginx/nginx.conf,ro \
+			--mount type=bind,src={{ matrix_client_hydrogen_data_path }}/config.json,dst=/app/config.json,ro \
+			{% for arg in matrix_client_hydrogen_container_extra_arguments %}
+			{{ arg }} \
+			{% endfor %}
+			{{ matrix_client_hydrogen_docker_image }}
+
+ExecStop=-{{ matrix_host_command_sh }} -c '{{ matrix_host_command_docker }} kill matrix-client-hydrogen 2>/dev/null'
+ExecStop=-{{ matrix_host_command_sh }} -c '{{ matrix_host_command_docker }} rm matrix-client-hydrogen 2>/dev/null'
+Restart=always
+RestartSec=30
+SyslogIdentifier=matrix-client-hydrogen
+
+[Install]
+WantedBy=multi-user.target
diff --git a/roles/matrix-coturn/tasks/init.yml b/roles/matrix-coturn/tasks/init.yml
index be011b7fe..172701622 100644
--- a/roles/matrix-coturn/tasks/init.yml
+++ b/roles/matrix-coturn/tasks/init.yml
@@ -7,7 +7,7 @@
   when: "matrix_coturn_enabled|bool and matrix_coturn_tls_enabled|bool"
 
 # ansible lower than 2.8, does not support docker_image build parameters
-# for self buildig it is explicitly needed, so we rather fail here
+# for self building it is explicitly needed, so we rather fail here
 - name: Fail if running on Ansible lower than 2.8 and trying self building
   fail:
     msg: "To self build Coturn image, you should usa ansible 2.8 or higher. E.g. pip contains such packages."
diff --git a/roles/matrix-ma1sd/tasks/init.yml b/roles/matrix-ma1sd/tasks/init.yml
index 89283a1fb..64f2781ee 100644
--- a/roles/matrix-ma1sd/tasks/init.yml
+++ b/roles/matrix-ma1sd/tasks/init.yml
@@ -3,7 +3,7 @@
   when: matrix_ma1sd_enabled|bool
 
 # ansible lower than 2.8, does not support docker_image build parameters
-# for self buildig it is explicitly needed, so we rather fail here
+# for self building it is explicitly needed, so we rather fail here
 - name: Fail if running on Ansible lower than 2.8 and trying self building
   fail:
     msg: "To self build ma1sd image, you should usa ansible 2.8 or higher. E.g. pip contains such packages."
diff --git a/roles/matrix-nginx-proxy/defaults/main.yml b/roles/matrix-nginx-proxy/defaults/main.yml
index a7d9aeb28..97ba7539c 100644
--- a/roles/matrix-nginx-proxy/defaults/main.yml
+++ b/roles/matrix-nginx-proxy/defaults/main.yml
@@ -113,6 +113,10 @@ matrix_nginx_proxy_proxy_synapse_federation_api_addr_sans_container: "localhost:
 matrix_nginx_proxy_proxy_element_enabled: false
 matrix_nginx_proxy_proxy_element_hostname: "{{ matrix_server_fqn_element }}"
 
+# Controls whether proxying the Hydrogen domain should be done.
+matrix_nginx_proxy_proxy_hydrogen_enabled: false
+matrix_nginx_proxy_proxy_hydrogen_hostname: "{{ matrix_server_fqn_hydrogen }}"
+
 # Controls whether proxying the matrix domain should be done.
 matrix_nginx_proxy_proxy_matrix_enabled: false
 matrix_nginx_proxy_proxy_matrix_hostname: "{{ matrix_server_fqn_matrix }}"
@@ -251,6 +255,9 @@ matrix_nginx_proxy_proxy_riot_additional_server_configuration_blocks: []
 # A list of strings containing additional configuration blocks to add to Element's server configuration (matrix-client-element.conf).
 matrix_nginx_proxy_proxy_element_additional_server_configuration_blocks: []
 
+# A list of strings containing additional configuration blocks to add to Element's server configuration (matrix-client-element.conf).
+matrix_nginx_proxy_proxy_hydrogen_additional_server_configuration_blocks: []
+
 # A list of strings containing additional configuration blocks to add to Dimension's server configuration (matrix-dimension.conf).
 matrix_nginx_proxy_proxy_dimension_additional_server_configuration_blocks: []
 
diff --git a/roles/matrix-nginx-proxy/tasks/setup_nginx_proxy.yml b/roles/matrix-nginx-proxy/tasks/setup_nginx_proxy.yml
index 7534d28c6..660f277cd 100644
--- a/roles/matrix-nginx-proxy/tasks/setup_nginx_proxy.yml
+++ b/roles/matrix-nginx-proxy/tasks/setup_nginx_proxy.yml
@@ -72,6 +72,13 @@
     mode: 0644
   when: matrix_nginx_proxy_proxy_riot_compat_redirect_enabled|bool
 
+- name: Ensure Matrix nginx-proxy configuration for Hydrogen domain exists
+  template:
+    src: "{{ role_path }}/templates/nginx/conf.d/matrix-client-hydrogen.conf.j2"
+    dest: "{{ matrix_nginx_proxy_confd_path }}/matrix-client-hydrogen.conf"
+    mode: 0644
+  when: matrix_nginx_proxy_proxy_hydrogen_enabled|bool
+
 - name: Ensure Matrix nginx-proxy configuration for dimension domain exists
   template:
     src: "{{ role_path }}/templates/nginx/conf.d/matrix-dimension.conf.j2"
diff --git a/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-client-hydrogen.conf.j2 b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-client-hydrogen.conf.j2
new file mode 100644
index 000000000..9224dd862
--- /dev/null
+++ b/roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-client-hydrogen.conf.j2
@@ -0,0 +1,84 @@
+#jinja2: lstrip_blocks: "True"
+
+{% macro render_vhost_directives() %}
+	gzip on;
+	gzip_types text/plain application/json application/javascript text/css image/x-icon font/ttf image/gif;
+
+	add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
+	add_header X-Content-Type-Options nosniff;
+	add_header X-Frame-Options SAMEORIGIN;
+	{% if matrix_nginx_proxy_floc_optout_enabled %}
+		add_header Permissions-Policy interest-cohort=() always;
+	{% endif %}
+
+	{% for configuration_block in matrix_nginx_proxy_proxy_hydrogen_additional_server_configuration_blocks %}
+		{{- configuration_block }}
+	{% endfor %}
+
+	location / {
+		{% if matrix_nginx_proxy_enabled %}
+			{# Use the embedded DNS resolver in Docker containers to discover the service #}
+			resolver 127.0.0.11 valid=5s;
+			set $backend "matrix-client-hydrogen:8080";
+			proxy_pass http://$backend;
+		{% else %}
+			{# Generic configuration for use outside of our container setup #}
+			proxy_pass http://127.0.0.1:8768;
+		{% endif %}
+
+		proxy_set_header Host $host;
+		proxy_set_header X-Forwarded-For $remote_addr;
+	}
+{% endmacro %}
+
+server {
+	listen {{ 8080 if matrix_nginx_proxy_enabled else 80 }};
+
+	server_name {{ matrix_nginx_proxy_proxy_hydrogen_hostname }};
+
+	server_tokens off;
+	root /dev/null;
+
+	{% if matrix_nginx_proxy_https_enabled %}
+		location /.well-known/acme-challenge {
+			{% if matrix_nginx_proxy_enabled %}
+				{# Use the embedded DNS resolver in Docker containers to discover the service #}
+				resolver 127.0.0.11 valid=5s;
+				set $backend "matrix-certbot:8080";
+				proxy_pass http://$backend;
+			{% else %}
+				{# Generic configuration for use outside of our container setup #}
+				proxy_pass http://127.0.0.1:{{ matrix_ssl_lets_encrypt_certbot_standalone_http_port }};
+			{% endif %}
+		}
+
+		location / {
+			return 301 https://$http_host$request_uri;
+		}
+	{% else %}
+		{{ render_vhost_directives() }}
+	{% endif %}
+}
+
+{% if matrix_nginx_proxy_https_enabled %}
+server {
+	listen {{ 8443 if matrix_nginx_proxy_enabled else 443 }} ssl http2;
+	listen [::]:{{ 8443 if matrix_nginx_proxy_enabled else 443 }} ssl http2;
+
+	server_name {{ matrix_nginx_proxy_proxy_hydrogen_hostname }};
+
+	server_tokens off;
+	root /dev/null;
+
+	ssl_certificate {{ matrix_ssl_config_dir_path }}/live/{{ matrix_nginx_proxy_proxy_hydrogen_hostname }}/fullchain.pem;
+	ssl_certificate_key {{ matrix_ssl_config_dir_path }}/live/{{ matrix_nginx_proxy_proxy_hydrogen_hostname }}/privkey.pem;
+
+	ssl_protocols {{ matrix_nginx_proxy_ssl_protocols }};
+	{% if matrix_nginx_proxy_ssl_ciphers != "" %}
+	ssl_ciphers {{ matrix_nginx_proxy_ssl_ciphers }};
+	{% endif %}
+	ssl_prefer_server_ciphers {{ matrix_nginx_proxy_ssl_prefer_server_ciphers }};
+
+	{{ render_vhost_directives() }}
+}
+{% endif %}
diff --git a/roles/matrix-synapse/tasks/init.yml b/roles/matrix-synapse/tasks/init.yml
index 04b8d2b8c..51dd99060 100644
--- a/roles/matrix-synapse/tasks/init.yml
+++ b/roles/matrix-synapse/tasks/init.yml
@@ -19,7 +19,7 @@
   when: matrix_s3_media_store_enabled|bool
 
 # ansible lower than 2.8, does not support docker_image build parameters
-# for self buildig it is explicitly needed, so we rather fail here
+# for self building it is explicitly needed, so we rather fail here
 - name: Fail if running on Ansible lower than 2.8 and trying self building
   fail:
     msg: "To self build Synapse image, you should usa ansible 2.8 or higher. E.g. pip contains such packages."
diff --git a/setup.yml b/setup.yml
index 4e2879e59..add6aae86 100755
--- a/setup.yml
+++ b/setup.yml
@@ -42,6 +42,7 @@
     - matrix-grafana
     - matrix-registration
     - matrix-client-element
+    - matrix-client-hydrogen
     - matrix-jitsi
     - matrix-ma1sd
     - matrix-dimension