1 files changed, 110 insertions, 0 deletions
diff --git a/catalog-be/src/main/java/org/openecomp/sdc/config/HttpClientFactory.java b/catalog-be/src/main/java/org/openecomp/sdc/config/HttpClientFactory.java
new file mode 100644
index 0000000000..f2544aa7ef
--- /dev/null
+++ b/catalog-be/src/main/java/org/openecomp/sdc/config/HttpClientFactory.java
@@ -0,0 +1,110 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * Copyright (C) 2020 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.config;
+
+import org.apache.http.client.HttpRequestRetryHandler;
+import org.apache.http.client.UserTokenHandler;
+import org.apache.http.client.config.RequestConfig;
+import org.apache.http.config.Registry;
+import org.apache.http.config.RegistryBuilder;
+import org.apache.http.config.SocketConfig;
+import org.apache.http.conn.HttpClientConnectionManager;
+import org.apache.http.conn.socket.ConnectionSocketFactory;
+import org.apache.http.conn.socket.PlainConnectionSocketFactory;
+import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.http.impl.client.HttpClients;
+import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
+import org.apache.http.ssl.SSLContexts;
+import org.openecomp.sdc.common.api.Constants;
+import org.openecomp.sdc.common.http.client.api.HttpClientConfigImmutable;
+import org.openecomp.sdc.common.http.config.HttpClientConfig;
+import org.openecomp.sdc.common.http.config.Timeouts;
+import org.openecomp.sdc.common.log.wrappers.Logger;
+
+public class HttpClientFactory {
+
+    private static final int DEFAULT_CONNECTION_POOL_SIZE = 30;
+    private static final int DEFAULT_MAX_CONNECTION_PER_ROUTE = 5;
+    private static final int VALIDATE_CONNECTION_AFTER_INACTIVITY_MS = 10000;
+    private static final int CONNECT_TIMEOUT_MS = 15000;
+
+    private static final Logger log = Logger.getLogger(HttpClientFactory.class);
+    private static final UserTokenHandler userTokenHandler = context -> null;
+
+    private HttpClientConnectionManager createConnectionManager(){
+        SSLConnectionSocketFactory sslsf = getSslConnectionSocketFactory();
+
+        Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create()
+                .register(Constants.HTTP, PlainConnectionSocketFactory.getSocketFactory())
+                .register(Constants.HTTPS, sslsf).build();
+
+        PoolingHttpClientConnectionManager manager = new PoolingHttpClientConnectionManager(registry);
+
+        manager.setMaxTotal(DEFAULT_CONNECTION_POOL_SIZE);
+        manager.setDefaultMaxPerRoute(DEFAULT_MAX_CONNECTION_PER_ROUTE);
+        manager.setValidateAfterInactivity(VALIDATE_CONNECTION_AFTER_INACTIVITY_MS);
+
+        SocketConfig socketConfig = SocketConfig.custom()
+                .setSoTimeout(CONNECT_TIMEOUT_MS)
+                .build();
+        manager.setDefaultSocketConfig(socketConfig);
+
+        return manager;
+    }
+
+    private SSLConnectionSocketFactory getSslConnectionSocketFactory() {
+        return new SSLConnectionSocketFactory(SSLContexts.createSystemDefault());
+    }
+
+
+    /*
+    The difference between this client factory and the one in common api,
+    is that this one returns an apache httpclient instance, rather than a custom created custom.
+    */
+    public CloseableHttpClient createHttpClient() {
+        int connectTimeoutMs = 5000;
+        int readTimeoutMs = 10000;
+        HttpClientConnectionManager connManager = createConnectionManager();
+        HttpClientConfig httpClientConfig = new HttpClientConfig(new Timeouts(connectTimeoutMs, readTimeoutMs));
+        HttpClientConfigImmutable immutableHttpClientConfig = new HttpClientConfigImmutable(httpClientConfig);
+        RequestConfig requestConfig = createClientTimeoutConfiguration(immutableHttpClientConfig);
+        return HttpClients.custom()
+                .setConnectionManager(connManager)
+                .setDefaultRequestConfig(requestConfig)
+                .setUserTokenHandler(userTokenHandler)
+                .setRetryHandler(resolveRetryHandler(immutableHttpClientConfig))
+                .build();
+    }
+
+    private  RequestConfig createClientTimeoutConfiguration(HttpClientConfigImmutable config) {
+        return RequestConfig.custom()
+                .setConnectTimeout(config.getConnectTimeoutMs())
+                .setSocketTimeout(config.getReadTimeoutMs())
+                .setConnectionRequestTimeout(config.getConnectPoolTimeoutMs())
+                .build();
+    }
+
+    private HttpRequestRetryHandler resolveRetryHandler(HttpClientConfigImmutable config) {
+        return config.getNumOfRetries() > 0 ? config.getRetryHandler() : null;
+    }
+
+}