init code

[vfc/nfvo/wfengine.git] / wso2 / common-util / src / main / java / org / openo / baseservice / bus / util / RegisterService.java

diff --git a/wso2/common-util/src/main/java/org/openo/baseservice/bus/util/RegisterService.java b/wso2/common-util/src/main/java/org/openo/baseservice/bus/util/RegisterService.java
new file mode 100644 (file)
index 0000000..d1926c7
--- /dev/null
+++ b/wso2/common-util/src/main/java/org/openo/baseservice/bus/util/RegisterService.java
@@ -0,0 +1,177 @@
+/*
+ * 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);
+    }
+}