feat: add alerts for ServiceManager contract (#291)

Author: JuArce

alerts/.env.example

@@ -0,0 +1,11 @@
+SLACK_WEBHOOK_URL=<YOUR_SLACK_WEBHOOK_URL>
+
+# Variables for contract_alerts.sh
+RPC_URL=<YOUR_RPC_URL>
+CONTRACT_ADDRESS=<YOUR_CONTRACT_ADDRESS>
+NEW_BATCH_TOPIC=<YOUR_NEW_BATCH_TOPIC>
+VERIFIED_BATCH_TOPIC=<YOUR_VERIFIED_BATCH_TOPIC>
+
+# Variables for process_errors_alerts.sh
+SERVICE=<YOUR_SERVICE>
+EXPRESSION=<GREP_EXPRESSION>

alerts/contract_alerts.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+# Load env file from $1 path
+source $1
+
+# Function to send slack message
+# @param message
+function send_slack_message() {
+  curl -X POST -H 'Content-type: application/json' \
+    --data "{\"text\":\"$1\"}" \
+    $SLACK_WEBHOOK_URL
+}
+
+while :
+do
+  last_block=$(cast block --rpc-url $RPC_URL -f number)
+  printf "Last block: %s\n" $last_block
+
+  from_block=$(($last_block - 10))
+
+  new_batch_logs=$(cast logs --rpc-url $RPC_URL --from-block $from_block --address $CONTRACT_ADDRESS $NEW_BATCH_TOPIC)
+  if [ -z "$new_batch_logs" ]; then
+    printf "No new batches logs found\n"
+    send_slack_message "🚨 ALERT: No new batches in Service Manager since block $from_block"
+  fi
+
+  verified_batch_logs=$(cast logs --rpc-url $RPC_URL --from-block $from_block --address $CONTRACT_ADDRESS $VERIFIED_BATCH_TOPIC)
+  if [ -z "$verified_batch_logs" ]; then
+    printf "No verified batches logs found\n"
+    send_slack_message "🚨 ALERT: No new verified batches in Service Manager since block $from_block"
+  fi
+
+  sleep 100
+done

alerts/process_errors_alerts.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+source $1
+
+journalctl -feu "$SERVICE"  -n 0 | while read LINE; do
+  (echo "$LINE" | grep -e "$EXPRESSION") && curl -X POST --silent --data-urlencode \
+    "payload={\"text\": \"$(echo $LINE | sed "s/\"/'/g")\"}" "$SLACK_WEBHOOK_URL";
+done