1 files changed, 119 insertions, 0 deletions
diff --git a/src/main/java/org/onap/pnfsimulator/simulator/client/HttpClientAdapterImpl.java b/src/main/java/org/onap/pnfsimulator/simulator/client/HttpClientAdapterImpl.java
new file mode 100644
index 0000000..ba668fc
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+++ b/src/main/java/org/onap/pnfsimulator/simulator/client/HttpClientAdapterImpl.java
@@ -0,0 +1,119 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PNF-REGISTRATION-HANDLER
+ * ================================================================================
+ * Copyright (C) 2020 Nokia. 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.onap.pnfsimulator.simulator.client;
+
+import org.apache.commons.codec.binary.Base64;
+import org.apache.http.HttpHeaders;
+import org.apache.http.HttpResponse;
+import org.apache.http.client.HttpClient;
+import org.apache.http.client.methods.HttpPost;
+import org.apache.http.entity.StringEntity;
+import org.apache.http.util.EntityUtils;
+import org.onap.pnfsimulator.simulator.client.utils.ssl.HttpClientFactoryFacade;
+import org.onap.pnfsimulator.simulator.client.utils.ssl.SslAuthenticationHelper;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.slf4j.MDC;
+import org.slf4j.Marker;
+import org.slf4j.MarkerFactory;
+
+import java.io.IOException;
+import java.io.UnsupportedEncodingException;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.nio.charset.StandardCharsets;
+import java.security.GeneralSecurityException;
+import java.util.UUID;
+
+import static org.onap.pnfsimulator.logging.MdcVariables.REQUEST_ID;
+import static org.onap.pnfsimulator.logging.MdcVariables.X_INVOCATION_ID;
+import static org.onap.pnfsimulator.logging.MdcVariables.X_ONAP_REQUEST_ID;
+
+public class HttpClientAdapterImpl implements HttpClientAdapter {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(HttpClientAdapterImpl.class);
+    private static final String CONTENT_TYPE = "Content-Type";
+    private static final String APPLICATION_JSON = "application/json";
+    private static final Marker INVOKE = MarkerFactory.getMarker("INVOKE");
+    private static final HttpApacheResponseAdapterFactory responseFactory = new HttpApacheResponseAdapterFactory();
+    private final HttpClient client;
+    private final String targetUrl;
+
+    public HttpClientAdapterImpl(String targetUrl, SslAuthenticationHelper sslAuthenticationHelper)
+        throws IOException, GeneralSecurityException {
+        this.client = HttpClientFactoryFacade.create(targetUrl, sslAuthenticationHelper);
+        this.targetUrl = targetUrl;
+    }
+
+    HttpClientAdapterImpl(HttpClient client, String targetUrl) {
+        this.client = client;
+        this.targetUrl = targetUrl;
+    }
+
+    @Override
+    public HttpResponseAdapter send(String content) {
+        HttpResponseAdapter vesResponse;
+        try {
+            HttpResponse response = sendAndRetrieve(content);
+            LOGGER.info(INVOKE, "Message sent, ves response code: {}", response.getStatusLine());
+            vesResponse = responseFactory.create(response);
+            EntityUtils.consumeQuietly(response.getEntity()); //response has to be fully consumed otherwise apache won't release connection
+        } catch (IOException | URISyntaxException e) {
+            LOGGER.warn("Error sending message to ves: {}", e.getMessage(), e.getCause());
+            vesResponse = new HttpResponseAdapter(421, String.format("Fail to connect with ves: %s", e.getMessage()));
+        }
+        return vesResponse;
+    }
+
+    private HttpResponse sendAndRetrieve(String content) throws IOException, URISyntaxException {
+        HttpPost request = createRequest(content);
+        HttpResponse httpResponse = client.execute(request);
+        request.releaseConnection();
+        return httpResponse;
+    }
+
+    private HttpPost createRequest(String content) throws UnsupportedEncodingException, URISyntaxException {
+        LOGGER.info("sending request using address: {}", this.targetUrl);
+        URI targetAddress = new URI(this.targetUrl);
+        HttpPost request = new HttpPost(targetAddress);
+        if(urlContainsUserInfo(targetAddress)) {
+            request.addHeader(HttpHeaders.AUTHORIZATION, getAuthenticationHeaderForUser(targetAddress.getUserInfo()));
+        }
+        StringEntity stringEntity = new StringEntity(content);
+        request.addHeader(CONTENT_TYPE, APPLICATION_JSON);
+        request.addHeader(X_ONAP_REQUEST_ID, MDC.get(REQUEST_ID));
+        request.addHeader(X_INVOCATION_ID, UUID.randomUUID().toString());
+        request.setEntity(stringEntity);
+        return request;
+    }
+
+    private boolean urlContainsUserInfo(URI targetAddress) {
+        return targetAddress.getUserInfo() != null && !targetAddress.getUserInfo().isEmpty();
+    }
+
+    private String getAuthenticationHeaderForUser(String userInfo) {
+        final byte[] encodedUserInfo = Base64.encodeBase64(
+            userInfo.getBytes(StandardCharsets.ISO_8859_1)
+        );
+        return String.format("Basic %s", new String(encodedUserInfo));
+    }
+
+}