koa-health-check

Koa Health Check

Cloud Health Connect provides a Koa Middleware based on Cloud Health. The following endpoints are provided to monitor services and applications on Kubernetes:

• Health Endpoint
• Liveness Endpoint
• Readiness Endpoint

Usage

import * as Koa from 'koa';
import * as health from '@cloudnative/health';
import { HealthEndpoint, ReadinessEndpoint, LivenessEndpoint } from 'koa-health-check';

const healthcheck = new health.HealthChecker();
const koa = new Koa();

koa.all('/live', LivenessEndpoint(healthcheck));
koa.all('/ready', ReadinessEndpoint(healthcheck));
koa.all('/health', HealthEndpoint(healthcheck));

Status Responses

Cloud Health Status	Readiness Status Code	Liveness Status Code	Combined Health Status Code
STARTING	503 UNAVAILABLE	200 OK	503 UNAVAILABLE
UP	200 OK	200 OK	200 OK
DOWN	503 UNAVAILABLE	503 UNAVAILABLE	503 UNAVAILABLE
STOPPING	503 UNAVAILABLE	503 UNAVAILABLE	503 UNAVAILABLE
STOPPED	503 UNAVAILABLE	503 UNAVAILABLE	503 UNAVAILABLE
-	500 SERVER ERROR	500 SERVER ERROR	500 SERVER ERROR

Development

To build the library, use npm run build command.

To run the tests, use npm run test command.