MiniDiscovery/scripts/list_services.sh

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#!/bin/bash
# Script to list all services from MiniDiscovery service
# Default values
BASE_URL="http://localhost:8500"
SERVICE_NAME=""
PASSING_ONLY=false
# Parse command line arguments
while [[ $# -gt 0 ]]; do
case $1 in
-t|--token)
API_TOKEN="$2"
shift 2
;;
-u|--url)
BASE_URL="$2"
shift 2
;;
-s|--service)
SERVICE_NAME="$2"
shift 2
;;
-p|--passing)
PASSING_ONLY=true
shift
;;
-h|--help)
echo "Usage: $0 -t API_TOKEN [options]"
echo "Options:"
echo " -t, --token TOKEN API token for authentication (required)"
echo " -u, --url URL Base URL of the API (default: $BASE_URL)"
echo " -s, --service NAME List instances of a specific service"
echo " -p, --passing Only show instances passing health checks"
echo " -h, --help Show this help message"
exit 0
;;
*)
echo "Unknown option: $1"
exit 1
;;
esac
done
# Check if API token is provided
if [ -z "$API_TOKEN" ]; then
echo "Error: API token is required"
echo "Use -t or --token to provide the API token"
exit 1
fi
# Function to format JSON output
format_json() {
# Check if jq is available
if command -v jq &> /dev/null; then
echo "$1" | jq .
else
echo "$1" | python3 -m json.tool 2>/dev/null || echo "$1"
fi
}
# If service name is provided, list instances of that service
if [ -n "$SERVICE_NAME" ]; then
echo "Listing instances of service: $SERVICE_NAME"
if [ "$PASSING_ONLY" = true ]; then
echo "Showing only instances passing health checks..."
ENDPOINT="/v1/health/service/${SERVICE_NAME}?passing=true"
else
ENDPOINT="/v1/catalog/service/${SERVICE_NAME}"
fi
RESPONSE=$(curl -s -X GET \
-H "X-API-Token: $API_TOKEN" \
-H "Accept: application/json" \
"${BASE_URL}${ENDPOINT}")
echo "Found $(echo "$RESPONSE" | grep -o '"ID"' | wc -l) instance(s):"
format_json "$RESPONSE"
else
# List all services
echo "Listing all services..."
RESPONSE=$(curl -s -X GET \
-H "X-API-Token: $API_TOKEN" \
-H "Accept: application/json" \
"${BASE_URL}/v1/catalog/services")
echo "Services found:"
format_json "$RESPONSE"
fi