io.undertow.server.handlers.proxy.mod_cluster.NodeHealthChecker Maven / Gradle / Ivy

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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2014 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.undertow.server.handlers.proxy.mod_cluster;

import io.undertow.client.ClientResponse;

/**
 * @author Emanuel Muckenhuber
 */
public interface NodeHealthChecker {

    /**
     * Check the response of a health check.
     *
     * @param response the client response
     * @return true if the response from the node is healthy
     */
    boolean checkResponse(final ClientResponse response);

    /**
     * Receiving a response is a success.
     */
    NodeHealthChecker NO_CHECK = new NodeHealthChecker() {
        @Override
        public boolean checkResponse(ClientResponse response) {
            return true;
        }
    };

    /**
     * Check that the response code is 2xx to 3xx.
     */
    NodeHealthChecker OK = new NodeHealthChecker() {
        @Override
        public boolean checkResponse(final ClientResponse response) {
            final int code = response.getResponseCode();
            return code >= 200 && code < 400;
        }
    };

}