Dmaap micro service jar
[appc.git] / services / appc-dmaap-service / appc-event-listener-bundle / src / main / java / org / onap / appc / listener / LCM / operation / ProviderOperations.java
diff --git a/services/appc-dmaap-service/appc-event-listener-bundle/src/main/java/org/onap/appc/listener/LCM/operation/ProviderOperations.java b/services/appc-dmaap-service/appc-event-listener-bundle/src/main/java/org/onap/appc/listener/LCM/operation/ProviderOperations.java
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+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Copyright (C) 2017 Amdocs
+ * ================================================================================
+ * Modifications Copyright (C) 2019 Ericsson
+ * =============================================================================
+ * 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.appc.listener.LCM.operation;
+
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+import com.fasterxml.jackson.databind.JsonNode;
+import java.io.IOException;
+import java.io.UnsupportedEncodingException;
+import java.net.MalformedURLException;
+import java.net.Socket;
+import java.net.URL;
+import java.security.KeyManagementException;
+import java.security.KeyStore;
+import java.security.KeyStoreException;
+import java.security.NoSuchAlgorithmException;
+import java.security.UnrecoverableKeyException;
+import java.security.cert.CertificateException;
+import java.security.cert.X509Certificate;
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.TrustManager;
+import javax.net.ssl.X509TrustManager;
+import org.apache.commons.codec.binary.Base64;
+import org.apache.commons.io.IOUtils;
+import org.apache.http.HttpHeaders;
+import org.apache.http.HttpResponse;
+import org.apache.http.HttpVersion;
+import org.apache.http.client.HttpClient;
+import org.apache.http.client.methods.HttpPost;
+import org.apache.http.conn.ClientConnectionManager;
+import org.apache.http.conn.scheme.PlainSocketFactory;
+import org.apache.http.conn.scheme.Scheme;
+import org.apache.http.conn.scheme.SchemeRegistry;
+import org.apache.http.conn.ssl.SSLSocketFactory;
+import org.apache.http.entity.StringEntity;
+import org.apache.http.impl.client.DefaultHttpClient;
+import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
+import org.apache.http.params.BasicHttpParams;
+import org.apache.http.params.HttpParams;
+import org.apache.http.params.HttpProtocolParams;
+import org.apache.http.protocol.HTTP;
+import org.onap.appc.exceptions.APPCException;
+import org.onap.appc.listener.LCM.model.ResponseStatus;
+import org.onap.appc.listener.util.Mapper;
+
+public class ProviderOperations {
+
+    private final EELFLogger LOG = EELFManager.getInstance().getLogger(ProviderOperations.class);
+
+    private URL url;
+    private String basicAuth;
+
+    private static ProviderOperationRequestFormatter requestFormatter = new GenericProviderOperationRequestFormatter();
+
+
+    public ProviderOperations(String url, String username, String password){
+        setAuthentication(username, password);
+        try {
+            this.url = new URL(url);
+        } catch (MalformedURLException e) {
+            LOG.error("An error occurred while building url", e);
+        }
+    }
+
+    /**
+     * Calls the AppcProvider to run a topology directed graph
+     *
+     * @param message The incoming message to be run
+     * @return True if the result is success. Never returns false and throws an exception instead.
+     * @throws UnsupportedEncodingException
+     * @throws Exception                    if there was a failure processing the request. The exception message is the failure reason.
+     */
+    @SuppressWarnings("nls")
+    public JsonNode topologyDG(String rpcName, JsonNode message) throws APPCException {
+        if (message == null) {
+            throw new APPCException("Provided message was null");
+        }
+
+        HttpPost postRequest = buildPostRequest(rpcName, message);
+        return getJsonNode(message, postRequest);
+    }
+
+    private HttpPost buildPostRequest(String rpcName, JsonNode message) throws APPCException {
+        HttpPost post;
+        try {
+
+            // Concatenate the "action" on the end of the URL
+            String path = requestFormatter.buildPath(url, rpcName);
+            URL serviceUrl = new URL(url.getProtocol(), url.getHost(), url.getPort(), path);
+
+            post = new HttpPost(serviceUrl.toExternalForm());
+            post.setHeader(HttpHeaders.CONTENT_TYPE, "application/json");
+            post.setHeader(HttpHeaders.ACCEPT, "application/json");
+
+            // Set Auth
+            if (basicAuth != null) {
+                post.setHeader(HttpHeaders.AUTHORIZATION, "Basic " + basicAuth);
+            }
+
+            String body = Mapper.toJsonString(message);
+            StringEntity entity = new StringEntity(body);
+            entity.setContentType("application/json");
+            post.setEntity(entity);
+        } catch (UnsupportedEncodingException | MalformedURLException e) {
+            throw new APPCException(e);
+        }
+        return post;
+    }
+
+    private JsonNode getJsonNode(JsonNode message, HttpPost post) throws APPCException {
+        HttpClient client = getHttpClient();
+
+        int httpCode;
+        String respBody;
+        try {
+            HttpResponse response = client.execute(post);
+            httpCode = response.getStatusLine().getStatusCode();
+            respBody = IOUtils.toString(response.getEntity().getContent());
+        } catch (IOException e) {
+            throw new APPCException(e);
+        }
+
+        if (httpCode >= 200 && httpCode < 300 && respBody != null) {
+            JsonNode json;
+            try {
+                json = Mapper.toJsonNodeFromJsonString(respBody);
+            } catch (Exception e) {
+                LOG.error("Error processing response from provider. Could not map response to json", e);
+                throw new APPCException("APPC has an unknown RPC error");
+            }
+            ResponseStatus responseStatus = requestFormatter.getResponseStatus(json);
+            if (!isSucceeded(responseStatus.getCode())) {
+                LOG.warn(String.format("Operation failed [%s]", message.toString()));
+            }
+            return json;
+        }
+        throw new APPCException(String.format("Unexpected response from endpoint: [%d] - %s ", httpCode, respBody));
+    }
+
+    /**
+     * Updates the static var URL and returns the value;
+     *
+     * @return The new value of URL
+     */
+    public String getUrl() {
+        return url.toExternalForm();
+    }
+
+    public void setUrl(String newUrl) {
+        try {
+            url = new URL(newUrl);
+        } catch (MalformedURLException e) {
+            LOG.error("An error occurred while building url", e);
+        }
+    }
+
+    /**
+     * Sets the basic authentication header for the given user and password. If either entry is null then set basic auth
+     * to null
+     *
+     * @param user     The user with optional domain name
+     * @param password The password for the user
+     * @return The new value of the basic auth string that will be used in the request headers
+     */
+    public String setAuthentication(String user, String password) {
+        if (user != null && password != null) {
+            String authStr = user + ":" + password;
+            basicAuth = new String(Base64.encodeBase64(authStr.getBytes()));
+        } else {
+            basicAuth = null;
+        }
+        return basicAuth;
+    }
+
+    @SuppressWarnings("deprecation")
+    protected HttpClient getHttpClient() throws APPCException {
+        HttpClient client;
+        switch (url.getProtocol()) {
+            case "https":
+                try {
+                    KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType());
+                    trustStore.load(null, null);
+                    MySSLSocketFactory sf = new MySSLSocketFactory(trustStore);
+                    sf.setHostnameVerifier(MySSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
+
+                    HttpParams params = new BasicHttpParams();
+                    HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
+                    HttpProtocolParams.setContentCharset(params, HTTP.UTF_8);
+
+                    SchemeRegistry registry = new SchemeRegistry();
+                    registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
+                    registry.register(new Scheme("https", sf, 443));
+                    registry.register(new Scheme("https", sf, 8443));
+                    registry.register(new Scheme("http", sf, 8181));
+
+                    ClientConnectionManager ccm = new ThreadSafeClientConnManager(params, registry);
+                    client = new DefaultHttpClient(ccm, params);
+                } catch (Exception e) {
+                    LOG.error("Error getting HTTP Client", e);
+                    client = new DefaultHttpClient();
+                }
+                break;
+            case "http":
+                client = new DefaultHttpClient();
+                break;
+            default:
+                throw new APPCException(
+                    "The provider.topology.url property is invalid. The url did not start with http[s]");
+        }
+        return client;
+    }
+
+    @SuppressWarnings("deprecation")
+    public static class MySSLSocketFactory extends SSLSocketFactory {
+        private SSLContext sslContext = SSLContext.getInstance("TLS");
+
+        public MySSLSocketFactory(KeyStore truststore) throws NoSuchAlgorithmException, KeyManagementException,
+            KeyStoreException, UnrecoverableKeyException {
+            super(truststore);
+
+            TrustManager tm = new X509TrustManager() {
+                @Override
+                public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
+                }
+
+                @Override
+                public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
+                }
+
+                @Override
+                public X509Certificate[] getAcceptedIssuers() {
+                    return null;
+                }
+            };
+
+            sslContext.init(null, new TrustManager[]{
+                tm
+            }, null);
+        }
+
+        @Override
+        public Socket createSocket(Socket socket, String host, int port, boolean autoClose)
+            throws IOException {
+            return sslContext.getSocketFactory().createSocket(socket, host, port, autoClose);
+        }
+
+        @Override
+        public Socket createSocket() throws IOException {
+            return sslContext.getSocketFactory().createSocket();
+        }
+    }
+
+    public static boolean isSucceeded(Integer code) {
+
+        //FIXME is it working as intended?
+        return code != null && ((code == 100) || (code == 400));
+    }
+}
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