ONAP BBS: Apex Nomadic ONT bug fixes

Issue-ID: DCAEGEN2-1237
Change-Id: Ibc1b5a221af5eb28799764498b2751d99f5764f3
Signed-off-by: s00370346 <swarup.nayak1@huawei.com>

2 files changed, 317 insertions, 0 deletions

diff --git a/examples/examples-onap-bbs/src/main/java/org/onap/policy/apex/examples/bbs/WebClient.java b/examples/examples-onap-bbs/src/main/java/org/onap/policy/apex/examples/bbs/WebClient.java
new file mode 100644
index 000000000..09b3fc47b
--- /dev/null
+++ b/examples/examples-onap-bbs/src/main/java/org/onap/policy/apex/examples/bbs/WebClient.java
@@ -0,0 +1,296 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2019 Huawei. 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.apex.examples.bbs;
+
+
+
+import java.io.BufferedReader;
+import java.io.ByteArrayInputStream;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.StringWriter;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.nio.charset.StandardCharsets;
+import java.util.Base64;
+import javax.net.ssl.HostnameVerifier;
+import javax.net.ssl.HttpsURLConnection;
+import javax.net.ssl.SSLContext;
+import java.security.cert.X509Certificate;
+import javax.net.ssl.SSLSession;
+import javax.net.ssl.TrustManager;
+import javax.net.ssl.X509TrustManager;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.transform.OutputKeys;
+import javax.xml.transform.Transformer;
+import javax.xml.transform.TransformerFactory;
+import javax.xml.transform.dom.DOMSource;
+import javax.xml.transform.stream.StreamResult;
+import javax.xml.xpath.XPath;
+import javax.xml.xpath.XPathConstants;
+import javax.xml.xpath.XPathFactory;
+import org.slf4j.ext.XLogger;
+import org.slf4j.ext.XLoggerFactory;
+import org.w3c.dom.Document;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+import org.xml.sax.InputSource;
+
+/**
+ * The Class WebClient act as rest client for BBS usecase.
+ */
+public class WebClient {
+
+    private static final XLogger LOGGER = XLoggerFactory.getXLogger(WebClient.class);
+
+    /**
+     * Disable ssl verification.
+     */
+    private static void disableCertificateValidation() {
+        try {
+            TrustManager[] trustAllCerts = new TrustManager[]{new X509TrustManager() {
+                public java.security.cert.X509Certificate[] getAcceptedIssuers() {
+                    return null;
+                }
+
+                public void checkClientTrusted(X509Certificate[] certs, String authType) {
+                }
+
+                public void checkServerTrusted(X509Certificate[] certs, String authType) {
+                }
+            }
+            };
+
+
+            SSLContext sc = SSLContext.getInstance("SSL");
+            sc.init(null, trustAllCerts, new java.security.SecureRandom());
+            HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
+
+            HostnameVerifier allHostsValid = new HostnameVerifier() {
+                public boolean verify(String hostname, SSLSession session) {
+                    return true;
+                }
+            };
+
+            HttpsURLConnection.setDefaultHostnameVerifier(allHostsValid);
+        } catch (Exception e) {
+            LOGGER.error("httpsRequest Exception " + e);
+        }
+    }
+
+    /**
+     * Send simple https rest request.
+     *
+     * @param requestUrl  url
+     * @param requestMethod  method eg POST/GET/PUT
+     * @param outputStr   Data
+     * @param username  Simple Username
+     * @param pass   Simple password
+     * @param contentType http content type
+     * @param fillApp If required to fill app details
+     * @param disableSSl If disabling ssl checking
+     * @return  String response message
+     */
+    public String httpsRequest(String requestUrl, String requestMethod,
+                               String outputStr, String username, String pass,
+                               String contentType, boolean fillApp, boolean disableSSl) {
+        String result = "";
+        StringBuffer buffer = new StringBuffer();
+        try {
+            LOGGER.info("httpsRequest starts " + requestUrl + " method " + requestMethod);
+            if (disableSSl) {
+                disableCertificateValidation();
+            }
+            URL url = new URL(requestUrl);
+            HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection();
+            httpUrlConn.setDoOutput(true);
+            httpUrlConn.setDoInput(true);
+            httpUrlConn.setUseCaches(false);
+
+            if ((username != null) && (pass != null)) {
+                httpUrlConn.setRequestProperty("Authorization", getAuth(username, pass));
+            } else {
+                LOGGER.warn("Authorization information missing");
+            }
+
+            httpUrlConn.setRequestProperty("Content-Type", contentType);
+            httpUrlConn.setRequestProperty("Accept", contentType);
+            if (fillApp) {
+                httpUrlConn.setRequestProperty("X-FromAppId", "BBS Policy");
+                httpUrlConn.setRequestProperty("X-TransactionId", "BBS Policy");
+            }
+            httpUrlConn.setRequestMethod(requestMethod);
+
+            if ("GET".equalsIgnoreCase(requestMethod)) {
+                httpUrlConn.connect();
+            }
+
+            if (null != outputStr) {
+                OutputStream outputStream = httpUrlConn.getOutputStream();
+                outputStream.write(outputStr.getBytes(StandardCharsets.UTF_8));
+                outputStream.close();
+            }
+
+            try (InputStream inputStream = httpUrlConn.getInputStream()) {
+                try (InputStreamReader inputStreamReader = new InputStreamReader(inputStream, StandardCharsets.UTF_8)) {
+                    try (BufferedReader bufferedReader = new BufferedReader(inputStreamReader)) {
+                        String str;
+                        while ((str = bufferedReader.readLine()) != null) {
+                            buffer.append(str);
+                        }
+                    }
+                }
+                httpUrlConn.disconnect();
+                result = buffer.toString();
+            }
+            LOGGER.info("httpsRequest success ");
+        } catch (Exception ce) {
+            LOGGER.error("httpsRequest Exception " + ce);
+        }
+        return result;
+    }
+
+    /**
+     * Send simple https rest request.
+     *
+     * @param requestUrl  url
+     * @param requestMethod  method eg POST/GET/PUT
+     * @param outputStr   Data
+     * @param username  Simple Username
+     * @param pass   Simple password
+     * @param contentType http content type
+     * @param fillApp If required to fill app details
+     * @param disableSSl If disabling ssl checking
+     * @return  String response message
+     */
+    public String httpRequest(String requestUrl, String requestMethod,
+                              String outputStr, String username, String pass,
+                              String contentType, boolean fillApp, boolean disableSSl) {
+        String result = "";
+        StringBuffer buffer = new StringBuffer();
+        try {
+            LOGGER.info("httpRequest starts " + requestUrl + " method " + requestMethod);
+            if (disableSSl) {
+                disableCertificateValidation();
+            }
+            URL url = new URL(requestUrl);
+            HttpURLConnection httpUrlConn = (HttpURLConnection) url.openConnection();
+            httpUrlConn.setDoOutput(true);
+            httpUrlConn.setDoInput(true);
+            httpUrlConn.setUseCaches(false);
+
+            if ((username != null) && (pass != null)) {
+                httpUrlConn.setRequestProperty("Authorization", getAuth(username, pass));
+            } else {
+                LOGGER.warn("Authorization information missing");
+            }
+
+            httpUrlConn.setRequestProperty("Content-Type", contentType);
+            httpUrlConn.setRequestProperty("Accept", contentType);
+            if (fillApp) {
+                httpUrlConn.setRequestProperty("X-FromAppId", "BBS Policy");
+                httpUrlConn.setRequestProperty("X-TransactionId", "BBS Policy");
+            }
+            httpUrlConn.setRequestMethod(requestMethod);
+
+            if ("GET".equalsIgnoreCase(requestMethod)) {
+                httpUrlConn.connect();
+            }
+
+            if (null != outputStr) {
+                OutputStream outputStream = httpUrlConn.getOutputStream();
+                outputStream.write(outputStr.getBytes(StandardCharsets.UTF_8));
+                outputStream.close();
+            }
+
+            try (InputStream inputStream = httpUrlConn.getInputStream()) {
+                try (InputStreamReader inputStreamReader = new InputStreamReader(inputStream, StandardCharsets.UTF_8)) {
+                    try (BufferedReader bufferedReader = new BufferedReader(inputStreamReader)) {
+                        String str;
+                        while ((str = bufferedReader.readLine()) != null) {
+                            buffer.append(str);
+                        }
+                    }
+                }
+                httpUrlConn.disconnect();
+                result = buffer.toString();
+            }
+            LOGGER.info("httpsRequest success ");
+        } catch (Exception ce) {
+            LOGGER.error("httpsRequest Exception " + ce);
+        }
+        return result;
+    }
+
+    /**
+     * Return Basic Authentication String.
+     *
+     * @param userName UserName
+     * @param password PassWord
+     * @return Basic Authentication
+     */
+    private String getAuth(String userName, String password) {
+        String userCredentials = userName + ":" + password;
+        return ("Basic " + Base64.getEncoder().encodeToString(userCredentials.getBytes(StandardCharsets.UTF_8)));
+    }
+
+    /**
+     * Pretty print xml string.
+     *
+     * @param xml Input string
+     * @param indent Indent number
+     * @return Indented xml string
+     */
+    public String toPrettyString(String xml, int indent) {
+        try {
+            try (ByteArrayInputStream br = new ByteArrayInputStream(xml.getBytes(StandardCharsets.UTF_8))) {
+                Document document = DocumentBuilderFactory.newInstance()
+                        .newDocumentBuilder()
+                        .parse(new InputSource(br));
+
+                document.normalize();
+                XPath path = XPathFactory.newInstance().newXPath();
+                NodeList nodeList = (NodeList) path.evaluate("//text()[normalize-space()='']",
+                        document,
+                        XPathConstants.NODESET);
+
+                for (int i = 0; i < nodeList.getLength(); ++i) {
+                    Node node = nodeList.item(i);
+                    node.getParentNode().removeChild(node);
+                }
+               
+                TransformerFactory transformerFactory = TransformerFactory.newInstance();
+                transformerFactory.setAttribute("indent-number", indent);
+                Transformer transformer = transformerFactory.newTransformer();
+                transformer.setOutputProperty(OutputKeys.ENCODING, StandardCharsets.UTF_8.name());
+                transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
+                transformer.setOutputProperty(OutputKeys.INDENT, "yes");
+
+                StringWriter stringWriter = new StringWriter();
+                transformer.transform(new DOMSource(document), new StreamResult(stringWriter));
+                return stringWriter.toString();
+            }
+        } catch (Exception e) {
+            throw new RuntimeException(e);
+        }
+    }
+}
diff --git a/examples/examples-onap-bbs/src/main/java/org/onap/policy/apex/examples/bbs/package-info.java b/examples/examples-onap-bbs/src/main/java/org/onap/policy/apex/examples/bbs/package-info.java
new file mode 100644
index 000000000..9e24032f0
--- /dev/null
+++ b/examples/examples-onap-bbs/src/main/java/org/onap/policy/apex/examples/bbs/package-info.java
@@ -0,0 +1,21 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2019 Huawei. 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.apex.examples.bbs;