SDC-WF API Integration via Proxy

SDC-WF Integration to call WF APIs via SDC Proxy
Integration using extensibility Plugin configuration

Change-Id: I06debeacef6ad681eaae131287df2aaa2f70a4fd
Issue-ID: SDC-1535
Signed-off-by: priyanshu <pagarwal@amdocs.com>

2 files changed, 70 insertions, 11 deletions

diff --git a/catalog-fe/src/main/java/org/openecomp/sdc/fe/servlets/FeProxyServlet.java b/catalog-fe/src/main/java/org/openecomp/sdc/fe/servlets/FeProxyServlet.java
index b726998555..0540fad269 100644
--- a/catalog-fe/src/main/java/org/openecomp/sdc/fe/servlets/FeProxyServlet.java
+++ b/catalog-fe/src/main/java/org/openecomp/sdc/fe/servlets/FeProxyServlet.java
@@ -22,11 +22,15 @@ package org.openecomp.sdc.fe.servlets;
 
 import com.google.common.cache.Cache;
 import com.google.common.cache.CacheBuilder;
+import java.net.MalformedURLException;
+import java.net.URL;
 import org.eclipse.jetty.client.api.Response;
 import org.openecomp.sdc.common.api.Constants;
 import org.openecomp.sdc.fe.config.Configuration;
 import org.openecomp.sdc.fe.config.ConfigurationManager;
 import org.openecomp.sdc.fe.config.FeEcompErrorManager;
+import org.openecomp.sdc.fe.config.PluginsConfiguration;
+import org.openecomp.sdc.fe.config.PluginsConfiguration.Plugin;
 import org.openecomp.sdc.fe.impl.MdcData;
 import org.openecomp.sdc.fe.utils.BeProtocol;
 import org.slf4j.Logger;
@@ -42,20 +46,33 @@ public class FeProxyServlet extends SSLProxyServlet {
 	private static final String URL = "%s://%s%s%s";
 	private static final String ONBOARDING_CONTEXT = "/onboarding-api";
 	private static final String DCAED_CONTEXT = "/dcae-api";
+	private static final String WORKFLOW_CONTEXT = "/wf";
+	private static final String SDC1_FE_PROXY = "/sdc1/feProxy";
+	private static final String PLUGIN_ID_WORKFLOW = "WORKFLOW";
+
 	private static final Logger log = LoggerFactory.getLogger(FeProxyServlet.class.getName());
 	private static Cache<String, MdcData> mdcDataCache = CacheBuilder.newBuilder().expireAfterWrite(10, TimeUnit.SECONDS).build();
 
 
 	@Override
 	protected String rewriteTarget(HttpServletRequest request) {
+		String originalUrl="";
+		String redirectedUrl = "";
+
 		try {
 			logFeRequest(request);
-		} catch (Exception e) {
+
+			originalUrl = request.getRequestURL().toString();
+			redirectedUrl = getModifiedUrl(request);
+
+		} catch(MalformedURLException mue){
+			FeEcompErrorManager.getInstance().logFeHttpLoggingError("FE Request");
+			log.error("Unexpected FE request processing error :", mue);
+		}
+		catch (Exception e) {
 			FeEcompErrorManager.getInstance().logFeHttpLoggingError("FE Request");
 			log.error("Unexpected FE request logging error :", e);
 		}
-		String originalUrl = request.getRequestURL().toString();
-		String redirectedUrl = getModifiedUrl(request);
 
 		log.debug("FeProxyServlet Redirecting request from: {} , to: {}", originalUrl, redirectedUrl);
 
@@ -138,7 +155,7 @@ public class FeProxyServlet extends SSLProxyServlet {
 
 	
 	
-	private String getModifiedUrl(HttpServletRequest request) {
+	private String getModifiedUrl(HttpServletRequest request) throws MalformedURLException {
 		Configuration config = getConfiguration(request);
 		if (config == null) {
 			log.error("failed to retrive configuration.");
@@ -149,12 +166,12 @@ public class FeProxyServlet extends SSLProxyServlet {
 		String host;
 		String port;
 		if (uri.contains(ONBOARDING_CONTEXT)){
-			uri = uri.replace("/sdc1/feProxy"+ONBOARDING_CONTEXT,ONBOARDING_CONTEXT);
+			uri = uri.replace(SDC1_FE_PROXY+ONBOARDING_CONTEXT,ONBOARDING_CONTEXT);
 			protocol = config.getOnboarding().getProtocolBe();
 			host = config.getOnboarding().getHostBe();
 			port = config.getOnboarding().getPortBe().toString();		
 		}else if(uri.contains(DCAED_CONTEXT)){
-			uri = uri.replace("/sdc1/feProxy"+DCAED_CONTEXT,DCAED_CONTEXT);
+			uri = uri.replace(SDC1_FE_PROXY+DCAED_CONTEXT,DCAED_CONTEXT);
 			protocol = config.getBeProtocol();
 			host = config.getBeHost();
 			if (config.getBeProtocol().equals(BeProtocol.HTTP.getProtocolName())) {
@@ -163,8 +180,21 @@ public class FeProxyServlet extends SSLProxyServlet {
 				port = config.getBeSslPort().toString();
 			}
 		}
+		else if (uri.contains(WORKFLOW_CONTEXT)){
+			uri = uri.replace(SDC1_FE_PROXY +WORKFLOW_CONTEXT,WORKFLOW_CONTEXT);
+			String workflowPluginURL = getPluginConfiguration(request).getPluginsList()
+					.stream()
+					.filter(plugin -> plugin.getPluginId().equalsIgnoreCase(PLUGIN_ID_WORKFLOW))
+					.map(Plugin::getPluginSourceUrl)
+					.findFirst().orElse(null);
+
+			java.net.URL workflowURL = new URL(workflowPluginURL);
+			protocol = workflowURL.getProtocol();
+			host = workflowURL.getHost();
+			port = String.valueOf(workflowURL.getPort());
+		}
 		else{
-			uri = uri.replace("/sdc1/feProxy","/sdc2");
+			uri = uri.replace(SDC1_FE_PROXY,"/sdc2");
 			protocol = config.getBeProtocol();
 			host = config.getBeHost();
 			if (config.getBeProtocol().equals(BeProtocol.HTTP.getProtocolName())) {
@@ -180,9 +210,9 @@ public class FeProxyServlet extends SSLProxyServlet {
 
 	}
 
-
-
-
+	private PluginsConfiguration getPluginConfiguration(HttpServletRequest request) {
+		return ((ConfigurationManager) request.getSession().getServletContext().getAttribute(Constants.CONFIGURATION_MANAGER_ATTR)).getPluginsConfiguration();
+  }
 
 
 	private Configuration getConfiguration(HttpServletRequest request) {
diff --git a/catalog-fe/src/test/java/org/openecomp/sdc/servlets/FeProxyServletTest.java b/catalog-fe/src/test/java/org/openecomp/sdc/servlets/FeProxyServletTest.java
index 1e42fec42f..9597928fc0 100644
--- a/catalog-fe/src/test/java/org/openecomp/sdc/servlets/FeProxyServletTest.java
+++ b/catalog-fe/src/test/java/org/openecomp/sdc/servlets/FeProxyServletTest.java
@@ -28,6 +28,7 @@ import org.mockito.Mockito;
 import org.openecomp.sdc.common.api.Constants;
 import org.openecomp.sdc.fe.config.Configuration;
 import org.openecomp.sdc.fe.config.ConfigurationManager;
+import org.openecomp.sdc.fe.config.PluginsConfiguration;
 import org.openecomp.sdc.fe.servlets.FeProxyServlet;
 
 import javax.servlet.ServletContext;
@@ -37,6 +38,7 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 
+import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
 import static org.mockito.Mockito.*;
 
@@ -54,9 +56,11 @@ public class FeProxyServletTest {
 	final static ServletContext servletContext = Mockito.mock(ServletContext.class);
 	final static ConfigurationManager configurationManager = Mockito.mock(ConfigurationManager.class);
 	final static Configuration configuration = Mockito.mock(Configuration.class);
-    final static Configuration.OnboardingConfig onboardingConfiguration = Mockito.mock(Configuration.OnboardingConfig.class);
+	final static Configuration.OnboardingConfig onboardingConfiguration = Mockito.mock(Configuration.OnboardingConfig.class);
 	final static Request proxyRequest = Mockito.spy(Request.class);
 	final static HttpFields httpFields = Mockito.mock(HttpFields.class);
+	private static final PluginsConfiguration pluginsConfiguration = Mockito.mock(PluginsConfiguration.class);
+	private static final PluginsConfiguration.Plugin plugin = Mockito.mock(PluginsConfiguration.Plugin.class);
 
 	final static String BE_PROTOCOL = "http";
 	final static String BE_HOST = "172.20.43.124";
@@ -64,6 +68,9 @@ public class FeProxyServletTest {
 	final static String ONBOARDING_BE_PROTOCOL = "http";
 	final static String ONBOARDING_BE_HOST = "172.20.43.125";
 	final static int ONBOARDING_BE_PORT = 8091;
+	final static String WF_PROTOCOL = "http";
+	final static String WF_HOST = "172.20.43.126";
+	final static int WF_PORT = 8092;
 	final static String HEADER_1 = "Header1";
 	final static String HEADER_2 = "Header2";
 	final static String HEADER_3 = "Header3";
@@ -102,6 +109,13 @@ public class FeProxyServletTest {
 		when(httpFields.containsKey(HEADER_2)).thenReturn(true);
 		when(httpFields.containsKey(HEADER_3)).thenReturn(false);
 
+		List<PluginsConfiguration.Plugin> pluginList = new ArrayList<PluginsConfiguration.Plugin>();
+		when(plugin.getPluginId()).thenReturn("WORKFLOW");
+		when(plugin.getPluginSourceUrl()).thenReturn(WF_PROTOCOL + "://" + WF_HOST + ":" + WF_PORT);
+		pluginList.add(plugin);
+		when(configurationManager.getPluginsConfiguration()).thenReturn(pluginsConfiguration);
+		when(pluginsConfiguration.getPluginsList()).thenReturn(pluginList);
+
 	}
 
 	@Test
@@ -175,6 +189,21 @@ public class FeProxyServletTest {
 
 	}
 
+	@Test
+	public void testRewriteURIWithWFAPIRequest() {
+		when(servletRequest.getRequestURI()).thenReturn("/sdc1/feProxy/wf/workflows");
+		String requestResourceUrl = "http://localhost:8080/sdc1/feProxy/wf/workflows";
+		String expectedChangedUrl = WF_PROTOCOL + "://" + WF_HOST + ":" + WF_PORT + "/wf/workflows";
+		when(servletRequest.getRequestURL()).thenReturn(new StringBuffer(requestResourceUrl));
+
+		when(servletRequest.getContextPath()).thenReturn("/sdc1");
+		when(servletRequest.getServletPath()).thenReturn("/feProxy/wf/workflows");
+
+		String rewriteURI = feProxy.rewriteTarget(servletRequest);
+
+		assertEquals(expectedChangedUrl, rewriteURI);
+	}
+
 	/**
 	 * class for testing only exposes the protected method.
 	 */