1 files changed, 208 insertions, 0 deletions
diff --git a/src/main/java/org/onap/clamp/clds/client/DcaeHttpConnectionManager.java b/src/main/java/org/onap/clamp/clds/client/DcaeHttpConnectionManager.java
new file mode 100644
index 00000000..cff955f1
--- /dev/null
+++ b/src/main/java/org/onap/clamp/clds/client/DcaeHttpConnectionManager.java
@@ -0,0 +1,208 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP CLAMP
+ * ================================================================================
+ * Copyright (C) 2017 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============================================
+ * ===================================================================
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ */
+
+package org.onap.clamp.clds.client;
+
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+
+import java.io.BufferedReader;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.security.KeyManagementException;
+import java.security.NoSuchAlgorithmException;
+import java.security.cert.CertificateException;
+import java.security.cert.X509Certificate;
+
+import javax.net.ssl.HostnameVerifier;
+import javax.net.ssl.HttpsURLConnection;
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.SSLSession;
+import javax.net.ssl.TrustManager;
+import javax.net.ssl.X509TrustManager;
+import javax.ws.rs.BadRequestException;
+
+import org.apache.commons.io.IOUtils;
+import org.onap.clamp.clds.util.LoggingUtils;
+
+public class DcaeHttpConnectionManager {
+    protected static final EELFLogger logger                  = EELFManager.getInstance()
+            .getLogger(DcaeHttpConnectionManager.class);
+    protected static final EELFLogger metricsLogger           = EELFManager.getInstance().getMetricsLogger();
+    private static final String       DCAE_REQUEST_FAILED_LOG = "Request Failed - response payload=";
+
+    private DcaeHttpConnectionManager() {
+    }
+
+    static TrustManager[] trustAllCerts = new TrustManager[] { new X509TrustManager() {
+        @Override
+        public java.security.cert.X509Certificate[] getAcceptedIssuers() {
+            return null;
+        }
+
+        @Override
+        public void checkClientTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {
+        }
+
+        @Override
+        public void checkServerTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {
+        }
+    } };
+
+    private static void enableSslNoCheck() {
+        try {
+            SSLContext sc = SSLContext.getInstance("SSL");
+            sc.init(null, trustAllCerts, new java.security.SecureRandom());
+            HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
+            HostnameVerifier allHostsValid = new HostnameVerifier() {
+                @Override
+                public boolean verify(String hostname, SSLSession session) {
+                    return true;
+                }
+            };
+            // set the allTrusting verifier
+            HttpsURLConnection.setDefaultHostnameVerifier(allHostsValid);
+        } catch (KeyManagementException | NoSuchAlgorithmException e) {
+            logger.error("Error when disabling security on SSL", e);
+        }
+    }
+
+    private static String doHttpsQuery(URL url, String requestMethod, String payload, String contentType)
+            throws IOException {
+        logger.info("Using HTTPS URL to contact DCAE:" + url.toString());
+        HttpsURLConnection secureConnection = (HttpsURLConnection) url.openConnection();
+        secureConnection.setRequestMethod(requestMethod);
+        secureConnection.setRequestProperty("X-ECOMP-RequestID", LoggingUtils.getRequestId());
+        if (payload != null && contentType != null) {
+            secureConnection.setRequestProperty("Content-Type", contentType);
+            secureConnection.setDoOutput(true);
+            try (DataOutputStream wr = new DataOutputStream(secureConnection.getOutputStream())) {
+                wr.writeBytes(payload);
+                wr.flush();
+            }
+        }
+        int responseCode = secureConnection.getResponseCode();
+        logger.info("Response Code: " + responseCode);
+        if (responseCode < 400) {
+            try (BufferedReader reader = new BufferedReader(new InputStreamReader(secureConnection.getInputStream()))) {
+                String responseStr = IOUtils.toString(reader);
+                logger.info("Response Content: " + responseStr);
+                return responseStr;
+            }
+        } else {
+            // In case of connection failure just check whether there is a
+            // content or not
+            try (BufferedReader reader = new BufferedReader(new InputStreamReader(secureConnection.getErrorStream()))) {
+                String responseStr = IOUtils.toString(reader);
+                logger.error(DCAE_REQUEST_FAILED_LOG + responseStr);
+                throw new BadRequestException(responseStr);
+            }
+        }
+    }
+
+    private static String doHttpQuery(URL url, String requestMethod, String payload, String contentType)
+            throws IOException {
+        logger.info("Using HTTP URL to contact DCAE:" + url);
+        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
+        connection.setRequestMethod(requestMethod);
+        connection.setRequestProperty("X-ECOMP-RequestID", LoggingUtils.getRequestId());
+        if (payload != null && contentType != null) {
+            connection.setRequestProperty("Content-Type", contentType);
+            connection.setDoOutput(true);
+            try (DataOutputStream wr = new DataOutputStream(connection.getOutputStream())) {
+                wr.writeBytes(payload);
+                wr.flush();
+            }
+        }
+        int responseCode = connection.getResponseCode();
+        logger.info("Response Code: " + responseCode);
+        if (responseCode < 400) {
+            try (BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()))) {
+                String responseStr = IOUtils.toString(reader);
+                logger.info("Response Content: " + responseStr);
+                return responseStr;
+            }
+        } else {
+            // In case of connection failure just check whether there is a
+            // content or not
+            try (BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getErrorStream()))) {
+                String responseStr = IOUtils.toString(reader);
+                logger.error(DCAE_REQUEST_FAILED_LOG + responseStr);
+                throw new BadRequestException(responseStr);
+            }
+        }
+    }
+
+    /**
+     * This method does a HTTP query to DCAE with parameters specified.
+     * 
+     * @param url
+     *            The string HTTP or HTTPS that mustr be used to connect
+     * @param requestMethod
+     *            The Request Method (PUT, POST, GET, DELETE, etc ...)
+     * @param payload
+     *            The payload if any, in that case an ouputstream is opened
+     * @param contentType
+     *            The "application/json or application/xml, or whatever"
+     * @return The payload of the answer
+     * @throws IOException
+     *             In case of issue with the streams
+     */
+    public static String doDcaeHttpQuery(String url, String requestMethod, String payload, String contentType)
+            throws IOException {
+        return doDcaeHttpQuery(url, requestMethod, payload, contentType, false);
+    }
+
+    /**
+     * This method does a HTTP/HTTPS query to DCAE with parameters specified.
+     * 
+     * @param url
+     *            The string HTTP or HTTPS that mustr be used to connect
+     * @param requestMethod
+     *            The Request Method (PUT, POST, GET, DELETE, etc ...)
+     * @param payload
+     *            The payload if any, in that case an ouputstream is opened
+     * @param contentType
+     *            The "application/json or application/xml, or whatever"
+     * @param withoutSecurity
+     *            Disable or not the SSL security (certificate,hostname, etc...)
+     * @return The payload of the answer
+     * @throws IOException
+     *             In case of issue with the streams
+     */
+    public static String doDcaeHttpQuery(String url, String requestMethod, String payload, String contentType,
+            boolean withoutSecurity) throws IOException {
+        URL urlObj = new URL(url);
+        if (url.contains("https://")) { // Support for HTTPS
+            if (withoutSecurity) {
+                enableSslNoCheck();
+            }
+            return doHttpsQuery(urlObj, requestMethod, payload, contentType);
+        } else { // Support for HTTP
+            return doHttpQuery(urlObj, requestMethod, payload, contentType);
+        }
+    }
+}