Revert "remove redundant code under appc-common-bundle/java"
[appc.git] / appc-core / appc-common-bundle / java / org / onap / appc / rest / client / RestClientInvoker.java
diff --git a/appc-core/appc-common-bundle/java/org/onap/appc/rest/client/RestClientInvoker.java b/appc-core/appc-common-bundle/java/org/onap/appc/rest/client/RestClientInvoker.java
new file mode 100644 (file)
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+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Copyright (C) 2017 Amdocs
+ * =============================================================================
+ * 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.rest.client;
+
+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.http.HttpHeaders;
+import org.apache.http.HttpResponse;
+import org.apache.http.HttpVersion;
+import org.apache.http.client.HttpClient;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.client.methods.HttpPost;
+import org.apache.http.client.methods.HttpPut;
+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.CloseableHttpClient;
+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 com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+
+@SuppressWarnings("deprecation")
+public class RestClientInvoker {
+
+    private static final EELFLogger LOG = EELFManager.getInstance().getLogger(RestClientInvoker.class);
+    private static final String OPERATION_HTTPS = "https";
+    private static final String OPERATION_APPLICATION_JSON = " application/json";
+    private static final String BASIC = "Basic ";
+
+    private URL url = null;
+    private String basicAuth = null;
+
+    public RestClientInvoker(URL url) {
+        this.url = url;
+    }
+
+    /**
+     * Sets the basic authentication header for the given user and password. If either entry is null
+     * then does not set basic auth
+     *
+     * @param user The user with optional domain name (for AAF)
+     * @param password The password for the user
+     */
+    public void setAuthentication(String user, String password) {
+        if (user != null && password != null) {
+            String authStr = user + ":" + password;
+            basicAuth = new String(Base64.encodeBase64(authStr.getBytes()));
+        }
+    }
+
+    public HttpResponse doPost(String path, String body) throws APPCException {
+        HttpPost post;
+
+        try {
+
+            URL postUrl = new URL(url.getProtocol(), url.getHost(), url.getPort(), path);
+            post = new HttpPost(postUrl.toExternalForm());
+            post.setHeader(HttpHeaders.CONTENT_TYPE, OPERATION_APPLICATION_JSON);
+            post.setHeader(HttpHeaders.ACCEPT, OPERATION_APPLICATION_JSON);
+
+            if (basicAuth != null) {
+                post.setHeader(HttpHeaders.AUTHORIZATION, BASIC + basicAuth);
+            }
+
+            StringEntity entity = new StringEntity(body);
+            entity.setContentType(OPERATION_APPLICATION_JSON);
+            post.setEntity(new StringEntity(body));
+        } catch (MalformedURLException | UnsupportedEncodingException e) {
+            throw new APPCException(e);
+        }
+        HttpClient client = getHttpClient();
+
+        try {
+            return client.execute(post);
+        } catch (IOException e) {
+            throw new APPCException(e);
+        }
+    }
+
+    /**
+     * This is Generic method that can be used to perform REST Put operation
+     *
+     * @param path - path for put
+     * @param body - payload for put action which will be sent as request body.
+     * @return - HttpResponse object which is returned from put REST call.
+     * @throws APPCException when error occurs
+     */
+    public HttpResponse doPut(String path, String body) throws APPCException {
+        HttpPut put;
+        try {
+            URL putUrl = new URL(url.getProtocol(), url.getHost(), url.getPort(), path);
+            put = new HttpPut(putUrl.toExternalForm());
+            put.setHeader(HttpHeaders.CONTENT_TYPE, OPERATION_APPLICATION_JSON);
+            put.setHeader(HttpHeaders.ACCEPT, OPERATION_APPLICATION_JSON);
+
+            if (basicAuth != null) {
+                put.setHeader(HttpHeaders.AUTHORIZATION, BASIC + basicAuth);
+            }
+
+            StringEntity entity = new StringEntity(body);
+            entity.setContentType(OPERATION_APPLICATION_JSON);
+            put.setEntity(new StringEntity(body));
+        } catch (UnsupportedEncodingException | MalformedURLException e) {
+            throw new APPCException(e);
+        }
+
+        HttpClient client = getHttpClient();
+
+        try {
+            return client.execute(put);
+        } catch (IOException e) {
+            throw new APPCException(e);
+        }
+    }
+
+    public HttpResponse doGet(String path) throws APPCException {
+        HttpGet get;
+        try {
+            URL getUrl = new URL(url.getProtocol(), url.getHost(), url.getPort(), path);
+            get = new HttpGet(getUrl.toExternalForm());
+            get.setHeader(HttpHeaders.CONTENT_TYPE, OPERATION_APPLICATION_JSON);
+            get.setHeader(HttpHeaders.ACCEPT, OPERATION_APPLICATION_JSON);
+
+            if (basicAuth != null) {
+                get.setHeader(HttpHeaders.AUTHORIZATION, BASIC + basicAuth);
+            }
+
+        } catch (Exception e) {
+            throw new APPCException(e);
+        }
+
+        try (CloseableHttpClient client = getHttpClient()) {
+            return client.execute(get);
+        } catch (IOException e) {
+            throw new APPCException(e);
+        }
+    }
+
+    private CloseableHttpClient getHttpClient() throws APPCException {
+        switch (url.getProtocol()) {
+            case OPERATION_HTTPS:
+                return createHttpsClient();
+            case "http":
+                return new DefaultHttpClient();
+            default:
+                throw new APPCException("The url did not start with http[s]");
+        }
+    }
+
+
+    private CloseableHttpClient createHttpsClient() {
+        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(OPERATION_HTTPS, sf, 443));
+            registry.register(new Scheme(OPERATION_HTTPS, sf, 8443));
+            registry.register(new Scheme("http", sf, 8181));
+
+            ClientConnectionManager ccm = new ThreadSafeClientConnManager(params, registry);
+            return new DefaultHttpClient(ccm, params);
+        } catch (Exception e) {
+            LOG.error("Error creating HTTPs Client. Creating default client.", e);
+            return new DefaultHttpClient();
+        }
+    }
+
+    private static class MySSLSocketFactory extends SSLSocketFactory {
+        private SSLContext sslContext = SSLContext.getInstance("TLS");
+
+        private MySSLSocketFactory(KeyStore truststore)
+                throws NoSuchAlgorithmException, KeyManagementException, KeyStoreException, UnrecoverableKeyException {
+            super(truststore);
+
+            TrustManager tm = new X509TrustManager() {
+                @Override
+                public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
+                    LOG.debug("Inside checkClientTrusted");
+                }
+
+                @Override
+                public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
+                    LOG.debug("Inside checkServerTrusted");
+                }
+
+                @Override
+                public X509Certificate[] getAcceptedIssuers() {
+                    return new X509Certificate[1];
+                }
+            };
+
+            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();
+        }
+    }
+
+}