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/**
* Copyright 2017 ZTE Corporation.
*
* 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.onap.holmes.common.config;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.core.Response;
import lombok.extern.slf4j.Slf4j;
import org.onap.holmes.common.constant.AlarmConst;
@Slf4j
public class MicroServiceConfig {
final static public String CONSUL_ADDR_SUF = ":8500/v1/catalog/service/";
final static public String CONSUL_HOST = "CONSUL_HOST";
final static public String HOSTNAME = "HOSTNAME";
final static public String CONFIG_BINDING_SERVICE = "CONFIG_BINDING_SERVICE";
final static public String DOCKER_HOST = "DOCKER_HOST";
final static public String MSB_ADDR = "MSB_ADDR";
public static String getEnv(String name) {
String value = System.getenv(name);
if (value == null) {
value = System.getProperty(name);
}
return value;
}
public static String getConsulAddrInfo() {
return "http://" + getEnv(CONSUL_HOST) + CONSUL_ADDR_SUF;
}
public static String getServiceAddrInfoFromDcaeConsulByHostName(String hostname) {
String ret = null;
String queryString = getConsulAddrInfo() + hostname;
log.info("Query the " + hostname + " address using the URL: " + queryString);
try {
JSONObject addrJson = (JSONObject) JSON.parseArray(execQuery(queryString)).get(0);
if (addrJson != null && addrJson.get("ServiceAddress") != null
&& addrJson.get("ServicePort") != null) {
ret = "http://" + addrJson.getString("ServiceAddress") + ":" + addrJson
.getString("ServicePort");
}
} catch (Exception e) {
log.warn(e.getMessage(), e);
}
log.info("The " + hostname + " address is " + ret);
return ret;
}
private static String execQuery(String queryString) {
Client client = ClientBuilder.newBuilder().build();
Response response = client.target(queryString).request().get();
return response.readEntity(String.class);
}
public static String getServiceConfigInfoFromCBS(String hostname) {
String ret = null;
String url = getServiceAddrInfoFromDcaeConsulByHostName(getEnv(CONFIG_BINDING_SERVICE)) + "/service_component/" + hostname;
try {
ret = execQuery(url);
} catch (Exception e) {
log.warn(e.getMessage(), e);
}
log.info("The query url is: " + url + ". The corresponding configurations are " + ret);
return ret;
}
public static String getMsbServerAddrWithHttpPrefix() {
String[] addrInfo = getMsbIpAndPort();
String ret = addrInfo[0] + ":" + addrInfo[1];
if (!ret.startsWith(AlarmConst.HTTP) || !ret.startsWith(AlarmConst.HTTPS)){
ret = AlarmConst.HTTP + ret;
}
return ret;
}
public static String[] getMsbIpAndPort() {
return split(getEnv(MSB_ADDR));
}
public static String[] getMicroServiceIpAndPort() {
String[] serviceAddrInfo = null;
String info = getServiceAddrInfoFromDcaeConsulByHostName(getEnv(HOSTNAME));
log.info("Got the service information of \"" + getEnv(HOSTNAME) + "\" from Consul. The response is " + info + ".");
if (info != null && !info.isEmpty()){
serviceAddrInfo = split(info);
} else {
serviceAddrInfo = split(getEnv(HOSTNAME));
}
return serviceAddrInfo;
}
private static String[] split(String addr) {
String ip;
String port = "80";
if (addr.lastIndexOf(":") == -1){
ip = addr;
} else if (addr.lastIndexOf(":") < 5 && addr.indexOf("://") != -1) {
ip = addr.substring(addr.indexOf("//") + 2); //remove the http(s):// prefix
} else {
ip = addr.substring(addr.indexOf("://") != -1 ? addr.indexOf("//") + 2 : 0, addr.lastIndexOf(":"));
port = addr.substring(addr.lastIndexOf(":") + 1);
}
return new String[] {ip, port};
}
}
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