WIP: Allow alternativ configuration for ETHEREUM_WS

Fixes: #8

Author: konradkonrad

setup-wizard.yml

@@ -29,7 +29,7 @@ fields:
       type: environment
       name: ETHEREUM_WS 
       service: shutter
-    required: true
+    required: false
 
   - id: enable_push_logs
     title: Enable Push Logs

shutter/scripts/configure_keyper.sh

@@ -6,6 +6,15 @@
 # shellcheck disable=SC1091
 . "${ASSETS_DIR}/variables.env"
 
+function test_ethereum_url() {
+    RESULT=$(wscat -c "$SHUTTER_NETWORK_NODE_ETHEREUMURL" -x '{"jsonrpc": "2.0", "method": "eth_syncing", "params": [], "id": 1}')
+    if [[ $RESULT =~ '"id":1' ]]; then return 0; else
+        echo "Could not find DAppNode RPC/WS url for this package!"
+        echo "Please configure 'ETHEREUM_WS' to point to an applicable websocket RPC service."
+        exit 1;
+    fi
+}
+
 echo "[INFO | configure] Calculating keyper configuration values..."
 
 SUPPORTED_NETWORKS="gnosis"
@@ -16,8 +25,11 @@ if [[ ! "$SHUTTER_P2P_LISTENADDRESSES" =~ ^\[.*\]$ ]]; then
 fi
 
 export SHUTTER_P2P_ADVERTISEADDRESSES="[\"/ip4/${_DAPPNODE_GLOBAL_PUBLIC_IP}/tcp/${KEYPER_PORT}\", \"/ip4/${_DAPPNODE_GLOBAL_PUBLIC_IP}/udp/${KEYPER_PORT}/quic-v1\"]"
-export SHUTTER_NETWORK_NODE_ETHEREUMURL=${ETHEREUM_WS}
+
+export SHUTTER_NETWORK_NODE_ETHEREUMURL=${ETHEREUM_WS:-$(get_execution_ws_url_from_global_env "$NETWORK" "$SUPPORTED_NETWORKS")}
 echo "[DEBUG | configure] SHUTTER_NETWORK_NODE_ETHEREUMURL is ${SHUTTER_NETWORK_NODE_ETHEREUMURL}"
+test_ethereum_url
+
 export VALIDATOR_PUBLIC_KEY=$(cat "${SHUTTER_CHAIN_DIR}/config/priv_validator_pubkey.hex")
 export SHUTTER_METRICS_ENABLED=${SHUTTER_PUSH_METRICS_ENABLED}
 export FLOODSUB_DISCOVERY_ENABLED=true