Re-introduce default path for rln creds, deactivate light push if no RLN creds

run_node.sh

@@ -87,15 +87,21 @@ if [ -n "${NODEKEY}" ]; then
     NODEKEY=--nodekey=${NODEKEY}
 fi
 
-if [ -n "${RLN_RELAY_CRED_PATH}" ]; then
-    echo "Using RLN credentials from ${RLN_RELAY_CRED_PATH}"
-    RLN_RELAY_CRED_PATH=--rln-relay-cred-path="${RLN_RELAY_CRED_PATH}"
-fi
-
 if [ -n "${RLN_RELAY_CRED_PASSWORD}" ]; then
     RLN_RELAY_CRED_PASSWORD=--rln-relay-cred-password="${RLN_RELAY_CRED_PASSWORD}"
+    ## Enable Light Push (RLNaaS) if RLN credentials are used
+    LIGHTPUSH=--lightpush=true
+    ## Pass default value for credentials path if not set
+    RLN_RELAY_CRED_PATH=--rln-relay-cred-path=${RLN_RELAY_CRED_PATH:-/keystore/keystore.json}
+    echo "Using RLN credentials from ${RLN_RELAY_CRED_PATH}"
+else
+    LIGHTPUSH=--lightpush=false
+    # Ensure no empty values are passed
+    RLN_RELAY_CRED_PATH=""
+    RLN_RELAY_CRED_PASSWORD=""
 fi
 
+
 STORE_RETENTION_POLICY=--store-message-retention-policy=size:1GB
 
 if [ -n "${STORAGE_SIZE}" ]; then
@@ -105,7 +111,7 @@ fi
 exec /usr/bin/wakunode\
     --relay=true\
     --filter=true\
-    --lightpush=false\
+    ${LIGHTPUSH}\
     --keep-alive=true\
     --max-connections=150\
     --cluster-id=1\
@@ -128,8 +134,8 @@ exec /usr/bin/wakunode\
     --store-message-db-url="postgres://${POSTGRES_USER}:${POSTGRES_PASSWORD}@postgres:5432/postgres"\
     --rln-relay-eth-client-address="${RLN_RELAY_ETH_CLIENT_ADDRESS}"\
     --rln-relay-tree-path="/etc/rln_tree"\
-    ${RLN_RELAY_CRED_PATH:+${RLN_RELAY_CRED_PATH}}\
-    ${RLN_RELAY_CRED_PASSWORD:+${RLN_RELAY_CRED_PASSWORD}}\
+    ${RLN_RELAY_CRED_PATH}\
+    ${RLN_RELAY_CRED_PASSWORD}\
     ${DNS_WSS_CMD}\
     ${NODEKEY}\
     ${STORE_RETENTION_POLICY}\