generic jetty filter and cadi support

Change-Id: I363e44e85e1d89c6254218629010d5c3e1507e0a
Issue-ID: POLICY-1043
Signed-off-by: Jorge Hernandez <jh1730@att.com>

6 files changed, 149 insertions, 65 deletions

diff --git a/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/HttpServletServer.java b/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/HttpServletServer.java
index c1d1a353..a2dd948a 100644
--- a/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/HttpServletServer.java
+++ b/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/HttpServletServer.java
@@ -1,6 +1,6 @@
 /*
  * ============LICENSE_START=======================================================
- * policy-endpoints
+ * ONAP
  * ================================================================================
  * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
  * ================================================================================
@@ -23,30 +23,38 @@ package org.onap.policy.common.endpoints.http.server;
 import org.onap.policy.common.capabilities.Startable;
 
 /**
- * A Jetty Server to server REST Requests
+ * Http Servlet Server interface
  */
 public interface HttpServletServer extends Startable {
 
 
     /**
-     * factory for managing and tracking DMAAP sources
+     * Factory of Http Servlet Servers
      */
-    public static HttpServletServerFactory factory = new IndexedHttpServletServerFactory();
+    HttpServletServerFactory factory = new IndexedHttpServletServerFactory();
 
     /**
      * 
      * @return port
      */
-    public int getPort();
+    int getPort();
 
     /**
      * enables basic authentication with user and password on the the relative path relativeUriPath
      * 
-     * @param user
-     * @param password
-     * @param relativeUriPath
+     * @param user user
+     * @param password password
+     * @param relativeUriPath relative path
      */
-    public void setBasicAuthentication(String user, String password, String relativeUriPath);
+    void setBasicAuthentication(String user, String password, String relativeUriPath);
+
+    /**
+     * adds a filter at the specified path
+     *
+     * @param filterPath filter path
+     * @param filterClass filter class
+     */
+    void addFilterClass(String filterPath, String filterClass);
 
     /**
      * adds a JAX-RS servlet class to serve REST requests
@@ -57,7 +65,7 @@ public interface HttpServletServer extends Startable {
      * @throws IllegalArgumentException unable to process because of invalid input
      * @throws IllegalStateException unable to process because of invalid state
      */
-    public void addServletClass(String servletPath, String restClass);
+    void addServletClass(String servletPath, String restClass);
 
     /**
      * adds a package containing JAX-RS classes to serve REST requests
@@ -68,7 +76,7 @@ public interface HttpServletServer extends Startable {
      * @throws IllegalArgumentException unable to process because of invalid input
      * @throws IllegalStateException unable to process because of invalid state
      */
-    public void addServletPackage(String servletPath, String restPackage);
+    void addServletPackage(String servletPath, String restPackage);
 
     /**
      * blocking start of the http server
@@ -79,5 +87,5 @@ public interface HttpServletServer extends Startable {
      * @throws IllegalArgumentException if arguments are invalid
      * @throws InterruptedException if the blocking operation is interrupted
      */
-    public boolean waitedStart(long maxWaitTime) throws InterruptedException;
+    boolean waitedStart(long maxWaitTime) throws InterruptedException;
 }
diff --git a/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/HttpServletServerFactory.java b/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/HttpServletServerFactory.java
index c7d2b1bf..4a430b20 100644
--- a/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/HttpServletServerFactory.java
+++ b/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/HttpServletServerFactory.java
@@ -26,6 +26,7 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Properties;
 
+import org.onap.aaf.cadi.filter.CadiFilter;
 import org.onap.policy.common.endpoints.http.server.internal.JettyJerseyServer;
 import org.onap.policy.common.endpoints.properties.PolicyEndPointProperties;
 import org.slf4j.Logger;
@@ -222,6 +223,13 @@ class IndexedHttpServletServerFactory implements HttpServletServerFactory {
                 https = Boolean.parseBoolean(httpsString);
             }
 
+            String aafString = properties.getProperty(PolicyEndPointProperties.PROPERTY_HTTP_SERVER_SERVICES + "."
+                + serviceName + PolicyEndPointProperties.PROPERTY_AAF_SUFFIX);
+            boolean aaf = false;
+            if (aafString != null && !aafString.isEmpty()) {
+                aaf = Boolean.parseBoolean(httpsString);
+            }
+
             HttpServletServer service = build(serviceName, https, hostName, servicePort, contextUriPath, swagger, managed);
             if (userName != null && !userName.isEmpty() && password != null && !password.isEmpty()) {
                 service.setBasicAuthentication(userName, password, authUriPath);
@@ -241,6 +249,10 @@ class IndexedHttpServletServerFactory implements HttpServletServerFactory {
                 }
             }
 
+            if (aaf) {
+                service.addFilterClass(contextUriPath, CadiFilter.class.getCanonicalName());
+            }
+
             serviceList.add(service);
         }
 
diff --git a/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/internal/JettyServletServer.java b/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/internal/JettyServletServer.java
index a4cc9b5f..b22a9401 100644
--- a/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/internal/JettyServletServer.java
+++ b/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/http/server/internal/JettyServletServer.java
@@ -22,6 +22,8 @@ package org.onap.policy.common.endpoints.http.server.internal;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
 
+import java.util.EnumSet;
+import javax.servlet.DispatcherType;
 import org.eclipse.jetty.security.ConstraintMapping;
 import org.eclipse.jetty.security.ConstraintSecurityHandler;
 import org.eclipse.jetty.security.HashLoginService;
@@ -175,6 +177,21 @@ public abstract class JettyServletServer implements HttpServletServer, Runnable
         this(name, false, host, port, contextPath);
     }
 
+    @Override
+    public void addFilterClass(String aFilterPath, String aFilterClass) {
+        if (aFilterClass == null || aFilterClass.isEmpty()) {
+            throw new IllegalArgumentException("No filter class provided");
+        }
+
+        String filterPath = aFilterPath;
+        if (aFilterPath == null || aFilterPath.isEmpty()) {
+            filterPath = "/*";
+        }
+
+        context.addFilter(aFilterClass, filterPath,
+                EnumSet.of(DispatcherType.INCLUDE, DispatcherType.REQUEST));
+    }
+
     public ServerConnector httpsConnector() {
         SslContextFactory sslContextFactory = new SslContextFactory();
 
diff --git a/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/properties/PolicyEndPointProperties.java b/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/properties/PolicyEndPointProperties.java
index 38f9b94d..bd8ea6f5 100644
--- a/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/properties/PolicyEndPointProperties.java
+++ b/policy-endpoints/src/main/java/org/onap/policy/common/endpoints/properties/PolicyEndPointProperties.java
@@ -24,77 +24,78 @@ public interface PolicyEndPointProperties {
 
     /* Generic property suffixes */
 
-    public static final String PROPERTY_TOPIC_SERVERS_SUFFIX = ".servers";
-    public static final String PROPERTY_TOPIC_API_KEY_SUFFIX = ".apiKey";
-    public static final String PROPERTY_TOPIC_API_SECRET_SUFFIX = ".apiSecret";
-    public static final String PROPERTY_TOPIC_AAF_MECHID_SUFFIX = ".aafMechId";
-    public static final String PROPERTY_TOPIC_AAF_PASSWORD_SUFFIX = ".aafPassword";
-    public static final String PROPERTY_TOPIC_EVENTS_SUFFIX = ".events";
-    public static final String PROPERTY_TOPIC_EVENTS_FILTER_SUFFIX = ".filter";
-    public static final String PROPERTY_TOPIC_EVENTS_CUSTOM_MODEL_CODER_GSON_SUFFIX = ".events.custom.gson";
-    public static final String PROPERTY_TOPIC_EVENTS_CUSTOM_MODEL_CODER_JACKSON_SUFFIX = ".events.custom.jackson";
-
-    public static final String PROPERTY_TOPIC_SOURCE_CONSUMER_GROUP_SUFFIX = ".consumerGroup";
-    public static final String PROPERTY_TOPIC_SOURCE_CONSUMER_INSTANCE_SUFFIX = ".consumerInstance";
-    public static final String PROPERTY_TOPIC_SOURCE_FETCH_TIMEOUT_SUFFIX = ".fetchTimeout";
-    public static final String PROPERTY_TOPIC_SOURCE_FETCH_LIMIT_SUFFIX = ".fetchLimit";
-    public static final String PROPERTY_MANAGED_SUFFIX = ".managed";
-
-    public static final String PROPERTY_TOPIC_SINK_PARTITION_KEY_SUFFIX = ".partitionKey";
-
-    public static final String PROPERTY_ALLOW_SELF_SIGNED_CERTIFICATES_SUFFIX = ".selfSignedCertificates";
+    String PROPERTY_TOPIC_SERVERS_SUFFIX = ".servers";
+    String PROPERTY_TOPIC_API_KEY_SUFFIX = ".apiKey";
+    String PROPERTY_TOPIC_API_SECRET_SUFFIX = ".apiSecret";
+    String PROPERTY_TOPIC_AAF_MECHID_SUFFIX = ".aafMechId";
+    String PROPERTY_TOPIC_AAF_PASSWORD_SUFFIX = ".aafPassword";
+    String PROPERTY_TOPIC_EVENTS_SUFFIX = ".events";
+    String PROPERTY_TOPIC_EVENTS_FILTER_SUFFIX = ".filter";
+    String PROPERTY_TOPIC_EVENTS_CUSTOM_MODEL_CODER_GSON_SUFFIX = ".events.custom.gson";
+    String PROPERTY_TOPIC_EVENTS_CUSTOM_MODEL_CODER_JACKSON_SUFFIX = ".events.custom.jackson";
+
+    String PROPERTY_TOPIC_SOURCE_CONSUMER_GROUP_SUFFIX = ".consumerGroup";
+    String PROPERTY_TOPIC_SOURCE_CONSUMER_INSTANCE_SUFFIX = ".consumerInstance";
+    String PROPERTY_TOPIC_SOURCE_FETCH_TIMEOUT_SUFFIX = ".fetchTimeout";
+    String PROPERTY_TOPIC_SOURCE_FETCH_LIMIT_SUFFIX = ".fetchLimit";
+    String PROPERTY_MANAGED_SUFFIX = ".managed";
+    String PROPERTY_AAF_SUFFIX = ".aaf";
+
+    String PROPERTY_TOPIC_SINK_PARTITION_KEY_SUFFIX = ".partitionKey";
+
+    String PROPERTY_ALLOW_SELF_SIGNED_CERTIFICATES_SUFFIX = ".selfSignedCertificates";
 
     /* UEB Properties */
 
-    public static final String PROPERTY_UEB_SOURCE_TOPICS = "ueb.source.topics";
-    public static final String PROPERTY_UEB_SINK_TOPICS = "ueb.sink.topics";
+    String PROPERTY_UEB_SOURCE_TOPICS = "ueb.source.topics";
+    String PROPERTY_UEB_SINK_TOPICS = "ueb.sink.topics";
 
     /* DMAAP Properties */
 
-    public static final String PROPERTY_DMAAP_SOURCE_TOPICS = "dmaap.source.topics";
-    public static final String PROPERTY_DMAAP_SINK_TOPICS = "dmaap.sink.topics";
-
-    public static final String PROPERTY_DMAAP_DME2_PARTNER_SUFFIX = ".dme2.partner";
-    public static final String PROPERTY_DMAAP_DME2_ROUTE_OFFER_SUFFIX = ".dme2.routeOffer";
-    public static final String PROPERTY_DMAAP_DME2_ENVIRONMENT_SUFFIX = ".dme2.environment";
-    public static final String PROPERTY_DMAAP_DME2_AFT_ENVIRONMENT_SUFFIX = ".dme2.aft.environment";
-    public static final String PROPERTY_DMAAP_DME2_LATITUDE_SUFFIX = ".dme2.latitude";
-    public static final String PROPERTY_DMAAP_DME2_LONGITUDE_SUFFIX = ".dme2.longitude";
-
-    public static final String PROPERTY_DMAAP_DME2_EP_READ_TIMEOUT_MS_SUFFIX = ".dme2.epReadTimeoutMs";
-    public static final String PROPERTY_DMAAP_DME2_EP_CONN_TIMEOUT_SUFFIX = ".dme2.epConnTimeout";
-    public static final String PROPERTY_DMAAP_DME2_ROUNDTRIP_TIMEOUT_MS_SUFFIX = ".dme2.roundtripTimeoutMs";
-    public static final String PROPERTY_DMAAP_DME2_VERSION_SUFFIX = ".dme2.version";
-    public static final String PROPERTY_DMAAP_DME2_SERVICE_NAME_SUFFIX = ".dme2.serviceName";
-    public static final String PROPERTY_DMAAP_DME2_SUB_CONTEXT_PATH_SUFFIX = ".dme2.subContextPath";
-    public static final String PROPERTY_DMAAP_DME2_SESSION_STICKINESS_REQUIRED_SUFFIX =
+    String PROPERTY_DMAAP_SOURCE_TOPICS = "dmaap.source.topics";
+    String PROPERTY_DMAAP_SINK_TOPICS = "dmaap.sink.topics";
+
+    String PROPERTY_DMAAP_DME2_PARTNER_SUFFIX = ".dme2.partner";
+    String PROPERTY_DMAAP_DME2_ROUTE_OFFER_SUFFIX = ".dme2.routeOffer";
+    String PROPERTY_DMAAP_DME2_ENVIRONMENT_SUFFIX = ".dme2.environment";
+    String PROPERTY_DMAAP_DME2_AFT_ENVIRONMENT_SUFFIX = ".dme2.aft.environment";
+    String PROPERTY_DMAAP_DME2_LATITUDE_SUFFIX = ".dme2.latitude";
+    String PROPERTY_DMAAP_DME2_LONGITUDE_SUFFIX = ".dme2.longitude";
+
+    String PROPERTY_DMAAP_DME2_EP_READ_TIMEOUT_MS_SUFFIX = ".dme2.epReadTimeoutMs";
+    String PROPERTY_DMAAP_DME2_EP_CONN_TIMEOUT_SUFFIX = ".dme2.epConnTimeout";
+    String PROPERTY_DMAAP_DME2_ROUNDTRIP_TIMEOUT_MS_SUFFIX = ".dme2.roundtripTimeoutMs";
+    String PROPERTY_DMAAP_DME2_VERSION_SUFFIX = ".dme2.version";
+    String PROPERTY_DMAAP_DME2_SERVICE_NAME_SUFFIX = ".dme2.serviceName";
+    String PROPERTY_DMAAP_DME2_SUB_CONTEXT_PATH_SUFFIX = ".dme2.subContextPath";
+    String PROPERTY_DMAAP_DME2_SESSION_STICKINESS_REQUIRED_SUFFIX =
             ".dme2.sessionStickinessRequired";
 
-    public static final String PROPERTY_NOOP_SINK_TOPICS = "noop.sink.topics";
+    String PROPERTY_NOOP_SINK_TOPICS = "noop.sink.topics";
 
     /* HTTP Server Properties */
 
-    public static final String PROPERTY_HTTP_SERVER_SERVICES = "http.server.services";
+    String PROPERTY_HTTP_SERVER_SERVICES = "http.server.services";
 
-    public static final String PROPERTY_HTTP_HOST_SUFFIX = ".host";
-    public static final String PROPERTY_HTTP_PORT_SUFFIX = ".port";
-    public static final String PROPERTY_HTTP_CONTEXT_URIPATH_SUFFIX = ".contextUriPath";
+    String PROPERTY_HTTP_HOST_SUFFIX = ".host";
+    String PROPERTY_HTTP_PORT_SUFFIX = ".port";
+    String PROPERTY_HTTP_CONTEXT_URIPATH_SUFFIX = ".contextUriPath";
 
-    public static final String PROPERTY_HTTP_AUTH_USERNAME_SUFFIX = ".userName";
-    public static final String PROPERTY_HTTP_AUTH_PASSWORD_SUFFIX = ".password";
-    public static final String PROPERTY_HTTP_AUTH_URIPATH_SUFFIX = ".authUriPath";
+    String PROPERTY_HTTP_AUTH_USERNAME_SUFFIX = ".userName";
+    String PROPERTY_HTTP_AUTH_PASSWORD_SUFFIX = ".password";
+    String PROPERTY_HTTP_AUTH_URIPATH_SUFFIX = ".authUriPath";
 
-    public static final String PROPERTY_HTTP_REST_CLASSES_SUFFIX = ".restClasses";
-    public static final String PROPERTY_HTTP_REST_PACKAGES_SUFFIX = ".restPackages";
-    public static final String PROPERTY_HTTP_REST_URIPATH_SUFFIX = ".restUriPath";
+    String PROPERTY_HTTP_REST_CLASSES_SUFFIX = ".restClasses";
+    String PROPERTY_HTTP_REST_PACKAGES_SUFFIX = ".restPackages";
+    String PROPERTY_HTTP_REST_URIPATH_SUFFIX = ".restUriPath";
 
-    public static final String PROPERTY_HTTP_HTTPS_SUFFIX = ".https";
-    public static final String PROPERTY_HTTP_SWAGGER_SUFFIX = ".swagger";
+    String PROPERTY_HTTP_HTTPS_SUFFIX = ".https";
+    String PROPERTY_HTTP_SWAGGER_SUFFIX = ".swagger";
 
     /* HTTP Client Properties */
 
-    public static final String PROPERTY_HTTP_CLIENT_SERVICES = "http.client.services";
+    String PROPERTY_HTTP_CLIENT_SERVICES = "http.client.services";
 
-    public static final String PROPERTY_HTTP_URL_SUFFIX = PROPERTY_HTTP_CONTEXT_URIPATH_SUFFIX;
+    String PROPERTY_HTTP_URL_SUFFIX = PROPERTY_HTTP_CONTEXT_URIPATH_SUFFIX;
 
 }
diff --git a/policy-endpoints/src/test/java/org/onap/policy/common/endpoints/http/server/test/HttpServerTest.java b/policy-endpoints/src/test/java/org/onap/policy/common/endpoints/http/server/test/HttpServerTest.java
index 0db6cfe1..d4c14a8a 100644
--- a/policy-endpoints/src/test/java/org/onap/policy/common/endpoints/http/server/test/HttpServerTest.java
+++ b/policy-endpoints/src/test/java/org/onap/policy/common/endpoints/http/server/test/HttpServerTest.java
@@ -20,6 +20,7 @@
 
 package org.onap.policy.common.endpoints.http.server.test;
 
+import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
 
 import java.io.BufferedReader;
@@ -51,6 +52,7 @@ public class HttpServerTest {
 
         HttpServletServer server = HttpServletServer.factory.build("echo", "localhost", 5678, "/", false, true);
         server.addServletPackage("/*", this.getClass().getPackage().getName());
+        server.addFilterClass("/*", TestFilter.class.getCanonicalName());
         server.waitedStart(5000);
 
         assertTrue(HttpServletServer.factory.get(5678).isAlive());
@@ -66,6 +68,9 @@ public class HttpServerTest {
         }
         assertTrue(response == null);
 
+        response = http(HttpServletServer.factory.get(5678), "http://localhost:5678/junit/echo/hello?block=true");
+        assertEquals("FILTERED", response);
+
         assertTrue(HttpServletServer.factory.get(5678).isAlive());
         assertTrue(HttpServletServer.factory.inventory().size() == 1);
 
diff --git a/policy-endpoints/src/test/java/org/onap/policy/common/endpoints/http/server/test/TestFilter.java b/policy-endpoints/src/test/java/org/onap/policy/common/endpoints/http/server/test/TestFilter.java
new file mode 100644
index 00000000..5de96930
--- /dev/null
+++ b/policy-endpoints/src/test/java/org/onap/policy/common/endpoints/http/server/test/TestFilter.java
@@ -0,0 +1,41 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2018 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=========================================================
+ */
+package org.onap.policy.common.endpoints.http.server.test;
+
+import java.io.IOException;
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+
+public class TestFilter implements Filter {
+
+    @Override
+    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)
+        throws IOException, ServletException {
+
+        if (servletRequest.getParameter("block") != null) {
+            servletResponse.getWriter().write("FILTERED");
+        } else {
+            filterChain.doFilter(servletRequest, servletResponse);
+        }
+    }
+}
\ No newline at end of file