com.snowstore.mercury.indicator.MemcachedHealthIndicator.java Source code

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Here is the source code for com.snowstore.mercury.indicator.MemcachedHealthIndicator.java

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/*
 * Copyright 2012-2014 the original author or authors.
 *
 * 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 com.snowstore.mercury.indicator;

import java.net.SocketAddress;
import java.util.Collection;

import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.Assert;

import com.google.code.ssm.CacheFactory;
import com.snowstore.mercury.core.health.Health;
import com.snowstore.mercury.core.indicator.AbstractHealthIndicator;
import com.snowstore.mercury.core.indicator.HealthIndicator;

/**
 * Simple implementation of a {@link HealthIndicator} returning status
 * information for Memcached data stores.
 * 
 * @author sm
 */
public class MemcachedHealthIndicator extends AbstractHealthIndicator implements InitializingBean {

    @Autowired(required = false)
    private CacheFactory cacheFactory;

    @Override
    protected void doHealthCheck(Health.Builder builder) throws Exception {
        if (valid) {
            Collection<SocketAddress> info = cacheFactory.getCache().getAvailableServers();
            builder.up().withDetail(SERVER, info.toArray());
            addBuilder(builder);
        } else {
            builder.none();
        }
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        try {
            Assert.notNull(this.cacheFactory, "cacheFactory must not be null");
        } catch (Exception e) {
            valid = false;
        }
    }

}