From 8abb2a474d9bf9f9acc5c3a8bc03c4eda015551d Mon Sep 17 00:00:00 2001
From: NagyZoltanPeter <113987313+NagyZoltanPeter@users.noreply.github.com>
Date: Thu, 25 Apr 2024 12:01:05 +0200
Subject: [PATCH] chore: add convenient script for checking node state via
 /health endpoint (#86)

---
 chkhealth.sh | 61 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100755 chkhealth.sh

diff --git a/chkhealth.sh b/chkhealth.sh
new file mode 100755
index 0000000..ea87211
--- /dev/null
+++ b/chkhealth.sh
@@ -0,0 +1,61 @@
+#!/usr/bin/env bash
+
+# optional argument to specgify the ip address
+ip_address="localhost:8645"
+plain_text_out=false
+
+# Parse command line arguments
+POSITIONAL_ARGS=()
+
+while [[ $# -gt 0 ]]; do
+  case $1 in
+    -p|--plain)
+      plain_text_out=true
+      shift # past argument
+      ;;
+    -*|--*)
+      echo "Unknown option $1"
+      exit 1
+      ;;
+    *)
+      POSITIONAL_ARGS+=("$1") # save positional arg
+      shift # past argument
+      ;;
+  esac
+done
+
+set -- "${POSITIONAL_ARGS[@]}" # restore positional parameters
+
+# Check if an IP address is provided as an argument
+if [[ -n "$1" ]]; then
+  ip_address="$1"
+fi
+
+# check if curl is available
+if ! command -v curl &> /dev/null
+then
+    echo "curl could not be found"
+    exit 1
+fi
+
+response=$(curl --connect-timeout 6 -s GET http://${ip_address}/health)
+
+if [[ $? -ne 0 ]]; then
+  echo -e "$(date +'%H:%M:%S') - Node may not be running or not reachable at http://${ip_address}\n"
+  exit 1
+fi
+
+if [[ -z "${response}" ]]; then
+  echo -e "$(date +'%H:%M:%S') - node health status is: unknown\n"
+  exit 1
+fi
+
+if ! command -v jq &> /dev/null || [[ "$plain_text_out" = true ]]; then
+  echo -e "$(date +'%H:%M:%S') - node health status is: ${response}\n"
+else
+  echo -e "$(date +'%H:%M:%S') - node health status is:\n"
+  echo "${response}" | jq . 2>/dev/null
+  if [[ $? -ne 0 ]]; then
+    echo -e "${response}"
+  fi
+fi