health checks (#39)

resolves #35

Co-authored-by: openhands <openhands@all-hands.dev>
Co-authored-by: johba <johba@harb.eth>
Reviewed-on: https://codeberg.org/johba/harb/pulls/39

scripts/dev.sh

@@ -0,0 +1,91 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+cd "$(dirname "$0")/.."
+
+PID_FILE=/tmp/kraiken-watcher.pid
+PROJECT_NAME=${COMPOSE_PROJECT_NAME:-$(basename "$PWD")}
+
+start_stack() {
+  if [[ -f "$PID_FILE" ]]; then
+    local existing_pid
+    existing_pid=$(cat "$PID_FILE")
+    if kill -0 "$existing_pid" 2>/dev/null; then
+      echo "Stopping existing kraiken-lib watcher ($existing_pid)..."
+      kill "$existing_pid" 2>/dev/null || true
+      wait "$existing_pid" 2>/dev/null || true
+    fi
+    rm -f "$PID_FILE"
+  fi
+
+  echo "Building kraiken-lib..."
+  ./scripts/build-kraiken-lib.sh
+
+  echo "Starting stack..."
+  podman-compose up -d
+
+  echo "Watching for kraiken-lib changes..."
+  ./scripts/watch-kraiken-lib.sh &
+  echo $! > "$PID_FILE"
+
+  echo ""
+  echo "[ok] Stack started"
+  echo "  Web App: http://localhost:8081/app/"
+  echo "  GraphQL: http://localhost:8081/graphql"
+}
+
+stop_stack() {
+  if [[ -f "$PID_FILE" ]]; then
+    local watcher_pid
+    watcher_pid=$(cat "$PID_FILE")
+    if kill "$watcher_pid" 2>/dev/null; then
+      wait "$watcher_pid" 2>/dev/null || true
+    fi
+    rm -f "$PID_FILE"
+  fi
+  podman-compose down
+  echo "[ok] Stack stopped"
+}
+
+check_health() {
+  echo "Checking health..."
+  local services=(anvil postgres ponder webapp landing txn-bot caddy)
+  for service in "${services[@]}"; do
+    local container
+    container=$(podman ps --all \
+      --filter "label=com.docker.compose.project=${PROJECT_NAME}" \
+      --filter "label=com.docker.compose.service=${service}" \
+      --format '{{.Names}}' | head -n1)
+
+    if [[ -z "$container" ]]; then
+      echo "  [??] $service (not created)"
+      continue
+    fi
+
+    if podman healthcheck run "$container" &>/dev/null; then
+      echo "  [ok] $service"
+    else
+      echo "  [!!] $service"
+    fi
+  done
+}
+
+usage() {
+  echo "Usage: $0 {start|stop|health}"
+  exit 1
+}
+
+case "${1:-help}" in
+  start)
+    start_stack
+    ;;
+  stop)
+    stop_stack
+    ;;
+  health)
+    check_health
+    ;;
+  *)
+    usage
+    ;;
+esac