Back up metrics config

Author: dappnodedev

dappnode_package.json

@@ -29,6 +29,11 @@
       "name": "db-data",
       "path": "/var/lib/postgresql/data",
       "service": "db"
+    },
+    {
+      "name": "metrics-config",
+      "path": "/config/user",
+      "service": "metrics"
     }
   ]
 }

metrics/Dockerfile

@@ -9,7 +9,8 @@ FROM victoriametrics/vmagent:v1.101.0
 ARG NETWORK
 
 ENV ASSETS_DIR=/assets \
-    CONFIG_FILE=/config/${NETWORK}/vmagent.yml
+    CONFIG_FILE=/config/${NETWORK}/vmagent.yml \
+    USER_SETTINGS_FILE=/config/user/settings.env
 
 COPY --from=assets ${ASSETS_DIR}/ ${ASSETS_DIR}/
 COPY config/ /config/

metrics/entrypoint.sh

@@ -1,30 +1,67 @@
 #!/bin/sh
 
-if [ "${SHUTTER_PUSH_METRICS_ENABLED}" = "false" ]; then
-    echo "[INFO | metrics] Metrics push is disabled"
-    exit 0
-fi
+update_user_settings() {
+    key=$1
+    value=$(eval echo \$$key)
+
+    if [ ! -f "$USER_SETTINGS_FILE" ]; then
+        touch "$USER_SETTINGS_FILE"
+    fi
+
+    if [ -z "$value" ]; then
+        echo "[INFO | metrics] Skipped updating $key in user settings file (empty value)"
+        return 1
+    fi
+
+    if grep -q "^$key=" "$USER_SETTINGS_FILE"; then
+        # Update the existing key
+        sed -i "s/^$key=.*/$key=$value/" "$USER_SETTINGS_FILE"
+        echo "[INFO | metrics] Updated $key to $value in $USER_SETTINGS_FILE"
+    else
+        # Add the new key
+        echo "$key=$value" >>"$USER_SETTINGS_FILE"
+        echo "[INFO | metrics] Added $key=$value to $USER_SETTINGS_FILE"
+    fi
+}
+
+source_envs() {
+    set -a
 
-set -eu
+    # shellcheck disable=SC1091
+    if [ -f "${ASSETS_DIR}/variables.env" ]; then
+        . "${ASSETS_DIR}/variables.env"
 
-set -a
+    else
+        echo "[ERROR | configure] Missing variables file (${ASSETS_DIR}/variables.env)"
+        exit 1
+    fi
 
-# shellcheck disable=SC1091
-if [ -f "${ASSETS_DIR}/variables.env" ]; then
-    . "${ASSETS_DIR}/variables.env"
-else
-    echo "[ERROR | configure] Missing variables file (${ASSETS_DIR}/variables.env)"
-    exit 1
+    if [ -z "${_ASSETS_VERSION:-}" ]; then
+        _ASSETS_VERSION="$(cat /assets/version)"
+    fi
+
+    # shellcheck disable=SC1090
+    . "$USER_SETTINGS_FILE"
+
+    set +a
+}
+
+# Create an empty JSON file in path USER_SETTINGS_FILE if it does not exist
+if [ ! -f "${USER_SETTINGS_FILE}" ]; then
+    echo "{}" >"${USER_SETTINGS_FILE}"
 fi
 
-set +a
+update_user_settings "PUSHGATEWAY_URL" "${PUSHGATEWAY_URL}"
+update_user_settings "PUSHGATEWAY_USERNAME" "${PUSHGATEWAY_USERNAME}"
+update_user_settings "PUSHGATEWAY_PASSWORD" "${PUSHGATEWAY_PASSWORD}"
 
-# TODO: Update script with upstream version
-if [ -z "${_ASSETS_VERSION:-}" ]; then
-    _ASSETS_VERSION="$(cat /assets/version)"
-    export _ASSETS_VERSION
+if [ "${SHUTTER_PUSH_METRICS_ENABLED}" = "false" ]; then
+    echo "[INFO | metrics] Metrics push is disabled"
+    exit 0
 fi
 
+source_envs
+
 exec /vmagent-prod \
     -promscrape.config="${CONFIG_FILE}" \
     -remoteWrite.url="${PUSHGATEWAY_URL}" \