Offer migration automatically if same host has a Voi setup (#29)

Author: hsoerensen

docs/installation/installation.md

@@ -26,4 +26,7 @@ export VOINETWORK_IMPORT_ACCOUNT=1
 ```
 
 ???+ info
-    Post-installation steps for migrating from a D13 based setup can be [found here](../migrating.md)
+    While the installation detects existing D13 based setups on the same host
+    and offers migration automatically,
+    it is important to familiarize yourself with the [migration steps](../../migrating/) in particular
+    if you are [migrating from a different host](../../migrating/#installing-on-a-new-server).

docs/migrating.md

@@ -11,10 +11,9 @@ export VOINETWORK_IMPORT_ACCOUNT=1
 
 === "Installing on same server"
 
-    To migrate your setup on an existing server you must first install Voi Swarn on your server using the
-    [installation instructions](../installation/installation/#using-an-existing-accountaddress-with-mnemonic), after this
-    you can migrate your existing setup by running this command:
+    During the installation, the setup will detect existing D13 based setups on the same host and offer migration automatically.
 
+    If you want to migrate manually after installation run this command:
 
     ```bash
     ~/voi/bin/migrate-from-d13-setup

install.sh

@@ -6,6 +6,7 @@ voi_home="${HOME}/voi"
 headless_install=0
 is_root=0
 skip_account_setup=0
+migrate_host_based_setup=0
 
 execute_sudo() {
   if [[ ${is_root} -eq 1 ]]; then
@@ -449,6 +450,11 @@ join_as_new_user() {
 
   account_status=$(execute_docker_command "goal account dump -a ${account_addr}" | jq -r .onl)
 
+  ## This step is late in the process and does require a restart of the service to take effect.
+  ## Container ID from verify_node_running will have to be re-fetched if any use of the node is to be done after this point.
+  ## Intentionally not doing this here to avoid confusion.
+  migrate_host_based_voi_setup
+
   if [[ ${account_status} -eq 1 ]]; then
     display_banner "Welcome to Voi! You are now online!"
   else
@@ -487,6 +493,12 @@ set_telemetry_name() {
     return
   fi
 
+  detect_existing_host_based_voi_setup
+
+  if [[ ${migrate_host_based_setup} -eq 1 ]]; then
+    return
+  fi
+
   display_banner "Telemetry"
 
   if [[ -z ${VOINETWORK_TELEMETRY_NAME} && ! -f "/var/lib/voi/algod/data/logging.config" ]]; then
@@ -513,6 +525,35 @@ set_telemetry_name() {
   fi
 }
 
+detect_existing_host_based_voi_setup() {
+  if [[ -f /var/lib/algorand/logging.config && ! -f /var/lib/voi/algod/data/logging.config ]]; then
+    echo "An existing Voi installation has been detected on your system."
+    echo "We can migrate your existing telemetry configuration to Voi Swarm."
+    echo "As part of this process, we will also stop the existing service."
+    echo "This is necessary to prevent conflicts and ensure that your node can join Voi Swarm as a healthy node."
+    echo ""
+    echo "Do you want to migrate your existing setup to Voi Swarm? (yes/no)"
+    # shellcheck disable=SC2162
+    read -p "Migrate existing setup: " prompt
+    while [[ ${prompt} != "yes" && ${prompt} != "no" ]]
+      do
+      # shellcheck disable=SC2162
+        read -p "Type either yes or no: " prompt
+    done
+    if [[ ${prompt} == "yes" ]]; then
+      migrate_host_based_setup=1
+    fi
+  fi
+}
+
+migrate_host_based_voi_setup() {
+    if [[ ${migrate_host_based_setup} -eq 1 ]]; then
+      display_banner "Migrating from host based setup"
+      VOINETWORK_TELEMETRY_NAME=$(execute_sudo "cat /var/lib/algorand/logging.config" | jq -r '.Name')
+      bash -c "env VOINETWORK_TELEMETRY_NAME=\"${VOINETWORK_TELEMETRY_NAME}\" ${voi_home}/bin/migrate-from-d13-setup"
+    fi
+}
+
 if [ -z "${BASH_VERSION:-}" ]; then
   abort "Bash is required to interpret this script."
 fi
@@ -548,6 +589,8 @@ if [[ -n ${VOINETWORK_SKIP_WALLET_SETUP} && ${VOINETWORK_SKIP_WALLET_SETUP} -eq
   headless_install=1
 fi
 
+display_banner "Welcome to Voi Swarm. Let's get started!"
+
 get_telemetry_name
 
 set_telemetry_name
@@ -669,6 +712,8 @@ if [[ ${skip_account_setup} -eq 0 ]]; then
 else
   generate_participation_key
 
+  migrate_host_based_voi_setup
+
   display_banner "Welcome to Voi!"
 
   joined_network_instructions