init code

[vfc/nfvo/wfengine.git] / wso2 / rest-client / src / main / java / org / openo / baseservice / roa / util / restclient / RestfulFactory.java

diff --git a/wso2/rest-client/src/main/java/org/openo/baseservice/roa/util/restclient/RestfulFactory.java b/wso2/rest-client/src/main/java/org/openo/baseservice/roa/util/restclient/RestfulFactory.java
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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.roa.util.restclient;
+
+import org.openo.baseservice.remoteservice.exception.ServiceException;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * RestFul instance factory. <br/>
+ * <p>
+ * </p>
+ * 
+ * @author
+ * @version   28-May-2016
+ */
+public class RestfulFactory {
+
+    /**
+     * https protocol.
+     */
+    public static final String PROTO_HTTPS = "https";
+
+    /**
+     * http protocol.
+     */
+    public static final String PROTO_HTTP = "http";
+
+    private static final Logger LOG = LoggerFactory.getLogger(RestfulFactory.class);
+
+    private static final Map<String, Restful> INSTANCES = new HashMap<>(2);
+
+    private RestfulFactory() {
+
+    }
+
+    /**
+     * Get RESTful instance. This method returns a singleton instance.
+     * <br/>
+     * 
+     * @param protocol protocol. currently only support 'http'.
+     * @return restful instance.
+     * @since  
+     */
+    public static synchronized Restful getRestInstance(final String protocol) {
+        Restful rest = INSTANCES.get(protocol);
+        if(rest != null) {
+            return rest;
+        }
+        if(PROTO_HTTP.equals(protocol)) {
+            rest = createHttpRest();
+            INSTANCES.put(protocol, rest);
+        }
+        return rest;
+    }
+
+    private static Restful createHttpRest() {
+        final HttpRest rest = new HttpRest();
+        setRestOption(rest, null);
+        return rest;
+    }
+
+    private static void setRestOption(final HttpRest rest, final String restoptionfile) {
+        try {
+            RestfulConfigure config;
+            if(restoptionfile == null || restoptionfile.isEmpty()) {
+                config = new RestfulConfigure();
+            } else {
+                config = new RestfulConfigure(restoptionfile);
+            }
+
+            final RestfulOptions option = config.getOptions();
+            rest.initHttpRest(option);
+        } catch(final ServiceException e) {
+            LOG.error("init http client exception: ", e);
+        }
+    }
+}