From c40afac26168795a4b18a4e0a809239c5daf3679 Mon Sep 17 00:00:00 2001
From: Lars Wirzenius <liw@liw.fi>
Date: Wed, 7 Feb 2024 18:50:34 +0200
Subject: radicle_node: restore backup, make connections persistent

Signed-off-by: Lars Wirzenius <liw@liw.fi>
Sponsored-by: author
---
 roles/radicle_node/tasks/main.yml | 103 +++++++++++++++++++++++++++++++-------
 1 file changed, 85 insertions(+), 18 deletions(-)

diff --git a/roles/radicle_node/tasks/main.yml b/roles/radicle_node/tasks/main.yml
index 5adaf18..7752060 100644
--- a/roles/radicle_node/tasks/main.yml
+++ b/roles/radicle_node/tasks/main.yml
@@ -27,6 +27,41 @@
       # Rsync for backups.
       - rsync
 
+- name: "stop Radicle node if running"
+  shell: |
+    systemctl stop radicle-node || true
+
+- name: "create directory for Radicle"
+  file:
+    state: directory
+    path: /home/_rad/.radicle
+    owner: _rad
+    group: _rad
+    mode: 0755
+
+- name: "create directory for Radicle backup"
+  file:
+    state: directory
+    path: radicle-backup
+    owner: debian
+    group: debian
+    mode: 0755
+
+- name: "restore .radicle directory from backup (step 1 or 2)"
+  when: radicle_node_backup is defined
+  synchronize:
+    src: "{{ radicle_node_backup }}/."
+    dest: radicle-backup/.
+    group: no
+    owner: no
+
+- name: "restore .radicle directory from backup (step 2 or 2)"
+  when: radicle_node_backup is defined
+  shell: |
+    rm radicle-backup/node/control.sock
+    rsync -a --del radicle-backup/. /home/_rad/.radicle/.
+    chown -R _rad:_rad /home/_rad/.radicle/.
+
 - name: "create directory for Radicle keys"
   file:
     state: directory
@@ -73,7 +108,7 @@
       ExecStart=/home/_rad/.radicle/bin/radicle-node --listen 0.0.0.0:8776
       Environment=RAD_HOME=/home/_rad/.radicle
       KillMode=process
-      Restart=never
+      Restart=on-failure
       RestartSec=1
       User=_rad
       Group=_rad
@@ -82,21 +117,46 @@
       WantedBy=default.target
     dest: /lib/systemd/system/radicle-node.service
 
-- name: "start systemd unit for Radicle node"
-  systemd:
-    name: radicle-node
-    state: restarted
-    masked: no
-    enabled: yes
-    daemon_reload: yes
-
-# Ansible does not seem to always actually start the unit, so do
-# it manually. This seems to only happen on the first run on a
-# freshly created host.
-- name: "actually start node"
-  shell: |
-    systemctl restart radicle-node
-    systemctl status radicle-node
+# # Ansible does not seem to always actually start the unit, so do
+# # it manually. This seems to only happen on the first run on a
+# # freshly created host.
+# - name: "actually start node"
+#   shell: |
+#     systemctl restart radicle-node
+#     if [ "$(systemctl is-active radicle-node)" != active ]; then
+#         systemctl status radicle-node
+#         false    
+#     fi
+
+- name: "install script to add nodes to connect to the Radicle config file"
+  when: radicle_node_connections is defined
+  copy:
+    content: |
+      #!/usr/bin/python3
+
+      import json, os, subprocess, sys
+
+      p = subprocess.run(["rad", "config", "show"], check=True, capture_output=True)
+      if p.returncode != 0:
+          sys.exit("rad config show failed")
+      config = json.loads(p.stdout.decode())
+      nodes = config["node"]["connect"]
+      for new in sys.argv[1:]:
+          if new not in nodes:
+              nodes.append(new)
+
+      p = subprocess.run(["rad", "self", "--home"], check=True, capture_output=True)
+      if p.returncode != 0:
+          sys.exit("rad self --home failed")
+
+      home = p.stdout.decode().strip()
+      filename = os.path.join(home, "config.json")
+      if os.path.exists(filename):
+          os.rename(filename, filename + ".bak")
+      with open(filename, "w") as f:
+          f.write(json.dumps(config, indent=4))
+    dest: radicle-perma-connect
+    mode: 0755
 
 - name: "connect to other Radicle nodes"
   when: radicle_node_connections is defined
@@ -104,11 +164,18 @@
   shell: |
     cat <<'EOF' > connect.sh
     export PATH="$HOME/.radicle/bin:$PATH"
-    rad node status
-    rad node connect "{{ item.nid }}@{{ item.host }}:{{ item.port }}"
+    ./radicle-perma-connect "{{ item.nid }}@{{ item.host }}:{{ item.port }}"
     EOF
     sudo -u _rad bash -ex connect.sh
 
+- name: "(re)start systemd unit for Radicle node"
+  systemd:
+    name: radicle-node
+    state: restarted
+    masked: no
+    enabled: yes
+    daemon_reload: yes
+
 - name: "seed Radicle repositories"
   when: radicle_node_repositories is defined
   with_items: "{{ radicle_node_repositories }}"
-- 
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