org.apache.nutch.webui.service.impl.NutchServiceImpl.java Source code

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Here is the source code for org.apache.nutch.webui.service.impl.NutchServiceImpl.java

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/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.nutch.webui.service.impl;

import java.net.ConnectException;
import java.util.Collections;
import java.util.Map;

import javax.annotation.Resource;

import org.apache.nutch.webui.client.NutchClientFactory;
import org.apache.nutch.webui.client.model.ConnectionStatus;
import org.apache.nutch.webui.client.model.NutchStatus;
import org.apache.nutch.webui.model.NutchInstance;
import org.apache.nutch.webui.service.NutchInstanceService;
import org.apache.nutch.webui.service.NutchService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;

import com.sun.jersey.api.client.ClientHandlerException;

@Service
public class NutchServiceImpl implements NutchService {
    private static final Logger logger = LoggerFactory.getLogger(NutchServiceImpl.class);

    @Resource
    private NutchClientFactory nutchClientFactory;

    @Resource
    private NutchInstanceService instanceService;

    @Override
    public ConnectionStatus getConnectionStatus(Long instanceId) {
        NutchInstance instance = instanceService.getInstance(instanceId);
        try {
            NutchStatus nutchStatus = nutchClientFactory.getClient(instance).getNutchStatus();
            if (nutchStatus.getStartDate() != null) {
                return ConnectionStatus.CONNECTED;
            }
        } catch (Exception e) {
            if (e.getCause() instanceof ConnectException) {
                return ConnectionStatus.DISCONNECTED;
            }

            logger.error("Cannot connect to nutch server!", e);
        }
        return null;
    }

    @Override
    public Map<String, String> getNutchConfig(Long instanceId) {
        NutchInstance instance = instanceService.getInstance(instanceId);
        try {
            return nutchClientFactory.getClient(instance).getNutchConfig("default");
        } catch (ClientHandlerException exception) {
            return Collections.emptyMap();
        }
    }

    @Override
    public NutchStatus getNutchStatus(Long instanceId) {
        NutchInstance instance = instanceService.getInstance(instanceId);
        return nutchClientFactory.getClient(instance).getNutchStatus();
    }
}