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/*
* Copyright 2016 Huawei Technologies Co., Ltd.
*
* 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 org.openo.baseservice.bus.util;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;
import javax.ws.rs.core.Response;
import org.apache.cxf.jaxrs.client.WebClient;
import org.codehaus.jackson.jaxrs.JacksonJsonProvider;
import org.openo.baseservice.util.impl.SystemEnvVariablesFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Provide the service register cbb for common use. <br/>
* <p>
* </p>
*
* @author
* @version
*/
public class RegisterService {
private static final Logger LOGGER = LoggerFactory.getLogger(RegisterService.class);
private static String busPath = null;
/**
* Constructor<br/>
* <p>
* </p>
*
* @throws IOException
*
* @since
*/
private RegisterService() {
}
/**
* register the micro service. <br/>
*
* @param jsonPath:
* the service json object to register to the bus.
* @param createOrUpdate:
* true, create and update the old ip port. false, create and
* delete the old one;
* @return
* @throws IOException
* @since
*/
public static Response registerService(String jsonPath, boolean createOrUpdate) throws IOException {
String serviceInfo = getServiceModel(jsonPath);
WebClient client = initializeClient();
client.type(BusConstant.APPLICATION_JSON_HEADER);
client.accept(BusConstant.APPLICATION_JSON_HEADER);
client.path(BusConstant.BUS_SERVICE_URL);
client.query(BusConstant.CREATE_OR_UPDATE, createOrUpdate);
LOGGER.info("Connecting bus address : " + busPath + BusConstant.BUS_SERVICE_URL);
return client.invoke(BusConstant.POST_METHOD, serviceInfo);
}
/**
* get the service's model. and return it as a string ; <br/>
*
* @param jsonPath
* @return
* @since
*/
private static String getServiceModel(String jsonPath) {
String serviceInfo = "";
try {
LOGGER.info("begin to read file micro service json " + jsonPath);
FileInputStream busFile = new FileInputStream(jsonPath);
int size = busFile.available();
byte[] buffer = new byte[size];
busFile.read(buffer);
busFile.close();
serviceInfo = new String(buffer);
LOGGER.info("finished to read micro service json file. ");
} catch (Exception ex) {
LOGGER.error("Read the micro service json file error :", ex);
}
return serviceInfo;
}
/**
* initialize the bus ip and port. <br/>
*
* @return
* @throws IOException
* @since
*/
private static String getBusAddress() throws IOException {
LOGGER.info("begin to get the bus baseurl.");
FileInputStream busFile = null;
String url = BusConstant.MICROSERVICE_DEFAULT;
String filePath = SystemEnvVariablesFactory.getInstance().getAppRoot() + BusConstant.BUS_CONFIGURE_FILE;
LOGGER.info("bus base url file:" + filePath);
Properties properties = new Properties();
try {
busFile = new FileInputStream(filePath);
properties.load(busFile);
url = properties.getProperty(BusConstant.BUS_ADDRESS_KEY);
} catch (IOException e) {
if (busFile != null) {
busFile.close();
}
LOGGER.error("Read the bus url failed: ", e);
}
LOGGER.info("initialize the bus baseurl is: " + url);
return BusConstant.HTTP_HEAD + url;
}
/**
* get the bus's client's address. and initialize the web client. <br/>
*
* @return
* @throws IOException
* @since
*/
private static WebClient initializeClient() throws IOException {
final List<Object> providers = new ArrayList<Object>();
JacksonJsonProvider jacksonJsonProvider = new JacksonJsonProvider();
providers.add(jacksonJsonProvider);
if (busPath == null) {
busPath = getBusAddress();
}
return WebClient.create(busPath, providers);
}
}
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