Support HTTP headers in REST Requestor

Change-Id: Iea4211e7d3324f5ea6244f45c91241a4067d8d33
Issue-ID: POLICY-1222
Signed-off-by: liamfallon <liam.fallon@est.tech>

15 files changed, 1092 insertions, 24 deletions

diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/main/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/ApexRestRequestorConsumer.java b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/main/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/ApexRestRequestorConsumer.java
index 7d6c60ca1..746fc85c4 100644
--- a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/main/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/ApexRestRequestorConsumer.java
+++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/main/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/ApexRestRequestorConsumer.java
@@ -22,6 +22,7 @@ package org.onap.policy.apex.plugins.event.carrier.restrequestor;
 
 import java.net.URL;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.EnumMap;
 import java.util.List;
 import java.util.Map;
@@ -144,11 +145,17 @@ public class ApexRestRequestorConsumer implements ApexEventConsumer, Runnable {
             throw new ApexEventException(errorMessage, e);
         }
 
-        // Set the peer timeout to the default value if its not set
+        // Set the requestor timeout
         if (consumerParameters.getPeerTimeout(EventHandlerPeeredMode.REQUESTOR) != 0) {
             restRequestTimeout = consumerParameters.getPeerTimeout(EventHandlerPeeredMode.REQUESTOR);
         }
 
+        // Check if HTTP headers has been set
+        if (restConsumerProperties.checkHttpHeadersSet()) {
+            LOGGER.debug("REST Requestor consumer has http headers ({}): {}", this.name,
+                            Arrays.deepToString(restConsumerProperties.getHttpHeaders()));
+        }
+
         // Initialize the HTTP client
         client = ClientBuilder.newClient();
     }
@@ -163,10 +170,10 @@ public class ApexRestRequestorConsumer implements ApexEventConsumer, Runnable {
         // Push the event onto the queue for handling
         try {
             incomingRestRequestQueue.add(restRequest);
-        } catch (final Exception e) {
+        } catch (final Exception requestException) {
             final String errorMessage = "could not queue request \"" + restRequest + "\" on REST Requestor consumer ("
                             + this.name + ")";
-            LOGGER.warn(errorMessage, e);
+            LOGGER.warn(errorMessage, requestException);
             throw new ApexEventRuntimeException(errorMessage);
         }
     }
@@ -386,23 +393,28 @@ public class ApexRestRequestorConsumer implements ApexEventConsumer, Runnable {
         /**
          * Execute the REST request.
          *
+         * 
          * @return the response to the REST request
          */
         public Response sendEventAsRestRequest() {
             switch (restConsumerProperties.getHttpMethod()) {
                 case GET:
-                    return client.target(restConsumerProperties.getUrl()).request(APPLICATION_JSON).get();
+                    return client.target(restConsumerProperties.getUrl()).request(APPLICATION_JSON)
+                                    .headers(restConsumerProperties.getHttpHeadersAsMultivaluedMap()).get();
 
                 case PUT:
                     return client.target(restConsumerProperties.getUrl()).request(APPLICATION_JSON)
+                                    .headers(restConsumerProperties.getHttpHeadersAsMultivaluedMap())
                                     .put(Entity.json(request.getEvent()));
 
                 case POST:
                     return client.target(restConsumerProperties.getUrl()).request(APPLICATION_JSON)
+                                    .headers(restConsumerProperties.getHttpHeadersAsMultivaluedMap())
                                     .post(Entity.json(request.getEvent()));
 
                 case DELETE:
-                    return client.target(restConsumerProperties.getUrl()).request(APPLICATION_JSON).delete();
+                    return client.target(restConsumerProperties.getUrl()).request(APPLICATION_JSON)
+                                    .headers(restConsumerProperties.getHttpHeadersAsMultivaluedMap()).delete();
 
                 default:
                     break;
diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/main/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/ApexRestRequestorProducer.java b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/main/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/ApexRestRequestorProducer.java
index 69ad05b27..4985fe16f 100644
--- a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/main/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/ApexRestRequestorProducer.java
+++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/main/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/ApexRestRequestorProducer.java
@@ -70,7 +70,7 @@ public class ApexRestRequestorProducer implements ApexEventProducer {
         if (!(producerParameters
                 .getCarrierTechnologyParameters() instanceof RestRequestorCarrierTechnologyParameters)) {
             final String errorMessage =
-                    "specified consumer properties are not applicable to REST requestor producer (" + this.name + ")";
+                    "specified producer properties are not applicable to REST requestor producer (" + this.name + ")";
             LOGGER.warn(errorMessage);
             throw new ApexEventException(errorMessage);
         }
diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/main/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/RestRequestorCarrierTechnologyParameters.java b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/main/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/RestRequestorCarrierTechnologyParameters.java
index acd5e52e8..d8009eeef 100644
--- a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/main/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/RestRequestorCarrierTechnologyParameters.java
+++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/main/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/RestRequestorCarrierTechnologyParameters.java
@@ -20,23 +20,34 @@
 
 package org.onap.policy.apex.plugins.event.carrier.restrequestor;
 
+import java.util.Arrays;
+
+import javax.ws.rs.core.MultivaluedHashMap;
+import javax.ws.rs.core.MultivaluedMap;
+
 import org.onap.policy.apex.service.parameters.carriertechnology.CarrierTechnologyParameters;
+import org.onap.policy.common.parameters.GroupValidationResult;
+import org.onap.policy.common.parameters.ValidationStatus;
+import org.onap.policy.common.utils.validation.ParameterValidationUtils;
 
+// @formatter:off
 /**
  * Apex parameters for REST as an event carrier technology with Apex issuing a REST request and receiving a REST
  * response.
  *
  * <p>The parameters for this plugin are:
  * <ol>
- * <li>url: The URL that the Apex Rest Requestor will connect to over REST for REST request sending. This parameter is
- * mandatory.
- * <li>httpMethod: The HTTP method to use when making requests over REST, legal values are GET (default), POST, PUT, and
- * DELETE.
+ * <li>url: The URL that the Apex Rest Requestor will connect to over REST for REST request sending.
+ * This parameter is mandatory.
+ * <li>httpMethod: The HTTP method to use when making requests over REST, legal values are GET (default),
+ *  POST, PUT, and DELETE.
  * <li>restRequestTimeout: The time in milliseconds to wait for a REST request to complete.
+ * <li>restRequestHeader: The necessary header needed
  * </ol>
  *
  * @author Liam Fallon (liam.fallon@ericsson.com)
  */
+//@formatter:on
 public class RestRequestorCarrierTechnologyParameters extends CarrierTechnologyParameters {
     /** The supported HTTP methods. */
     public enum HttpMethod {
@@ -47,12 +58,12 @@ public class RestRequestorCarrierTechnologyParameters extends CarrierTechnologyP
     public static final String RESTREQUESTOR_CARRIER_TECHNOLOGY_LABEL = "RESTREQUESTOR";
 
     /** The producer plugin class for the REST carrier technology. */
-    public static final String RESTREQUSTOR_EVENT_PRODUCER_PLUGIN_CLASS =
-            ApexRestRequestorProducer.class.getCanonicalName();
+    public static final String RESTREQUSTOR_EVENT_PRODUCER_PLUGIN_CLASS = ApexRestRequestorProducer.class
+                    .getCanonicalName();
 
     /** The consumer plugin class for the REST carrier technology. */
-    public static final String RESTREQUSTOR_EVENT_CONSUMER_PLUGIN_CLASS =
-            ApexRestRequestorConsumer.class.getCanonicalName();
+    public static final String RESTREQUSTOR_EVENT_CONSUMER_PLUGIN_CLASS = ApexRestRequestorConsumer.class
+                    .getCanonicalName();
 
     /** The default HTTP method for request events. */
     public static final HttpMethod DEFAULT_REQUESTOR_HTTP_METHOD = HttpMethod.GET;
@@ -60,12 +71,16 @@ public class RestRequestorCarrierTechnologyParameters extends CarrierTechnologyP
     /** The default timeout for REST requests. */
     public static final long DEFAULT_REST_REQUEST_TIMEOUT = 500;
 
+    // Commonly occurring strings
+    private static final String HTTP_HEADERS = "httpHeaders";
+
     private String url = null;
     private HttpMethod httpMethod = null;
+    private String[][] httpHeaders = null;
 
     /**
-     * Constructor to create a REST carrier technology parameters instance and register the instance with the parameter
-     * service.
+     * Constructor to create a REST carrier technology parameters instance and regiaaaster the instance with the
+     * parameter service.
      */
     public RestRequestorCarrierTechnologyParameters() {
         super();
@@ -112,14 +127,92 @@ public class RestRequestorCarrierTechnologyParameters extends CarrierTechnologyP
         this.httpMethod = httpMethod;
     }
 
+    /**
+     * Check if http headers have been set for the REST request.
+     *
+     * @return true if headers have beenset
+     */
+    public boolean checkHttpHeadersSet() {
+        return httpHeaders != null && httpHeaders.length > 0;
+    }
+
+    /**
+     * Gets the http headers for the REST request.
+     *
+     * @return the headers
+     */
+    public String[][] getHttpHeaders() {
+        return httpHeaders;
+    }
+
+    /**
+     * Gets the http headers for the REST request as a multivalued map.
+     *
+     * @return the headers
+     */
+    public MultivaluedMap<String, Object> getHttpHeadersAsMultivaluedMap() {
+        if (httpHeaders == null) {
+            return null;
+        }
+
+        // Load the HTTP headers into the map
+        MultivaluedMap<String, Object> httpHeaderMap = new MultivaluedHashMap<>();
+
+        for (String[] httpHeader : httpHeaders) {
+            httpHeaderMap.putSingle(httpHeader[0], httpHeader[1]);
+        }
+
+        return httpHeaderMap;
+    }
+
+    /**
+     * Sets the header for the REST request.
+     *
+     * @param httpHeaders the incoming HTTP headers
+     */
+    public void setHttpHeaders(final String[][] httpHeaders) {
+        this.httpHeaders = httpHeaders;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public GroupValidationResult validate() {
+        final GroupValidationResult result = super.validate();
+
+        if (httpHeaders == null) {
+            return result;
+        }
+
+        for (String[] httpHeader : httpHeaders) {
+            if (httpHeader == null) {
+                result.setResult(HTTP_HEADERS, ValidationStatus.INVALID, "HTTP header array entry is null");
+            } else if (httpHeader.length != 2) {
+                result.setResult(HTTP_HEADERS, ValidationStatus.INVALID,
+                                "HTTP header array entries must have one key and one value: "
+                                                + Arrays.deepToString(httpHeader));
+            } else if (!ParameterValidationUtils.validateStringParameter(httpHeader[0])) {
+                result.setResult(HTTP_HEADERS, ValidationStatus.INVALID,
+                                "HTTP header key is null or blank: " + Arrays.deepToString(httpHeader));
+            } else if (!ParameterValidationUtils.validateStringParameter(httpHeader[1])) {
+                result.setResult(HTTP_HEADERS, ValidationStatus.INVALID,
+                                "HTTP header value is null or blank: " + Arrays.deepToString(httpHeader));
+            }
+        }
+
+        return result;
+    }
+
     /*
      * (non-Javadoc)
      *
-     * @see java.lang.Object#toString()
+     * @see new LinkedHashMap<>()java.lang.Object#toString()
      */
 
     @Override
     public String toString() {
-        return "RESTRequestorCarrierTechnologyParameters [url=" + url + ", httpMethod=" + httpMethod + "]";
+        return "RESTRequestorCarrierTechnologyParameters [url=" + url + ", httpMethod=" + httpMethod + ", httpHeaders="
+                        + Arrays.deepToString(httpHeaders) + "]";
     }
 }
diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/ApexRestRequestTest.java b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/ApexRestRequestTest.java
new file mode 100644
index 000000000..559d2dba8
--- /dev/null
+++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/ApexRestRequestTest.java
@@ -0,0 +1,49 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2018 Ericsson. 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.plugins.event.carrier.restrequestor;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+
+/**
+ * Test the ApexRestRequest class.
+ */
+public class ApexRestRequestTest {
+
+    @Test
+    public void testApexRestRequest() {
+        final String eventName = "EventName";
+        final String eventString = "The Event String";
+
+        ApexRestRequest rr = new ApexRestRequest(1, eventName, eventString);
+
+        assertEquals(1, rr.getExecutionId());
+        assertEquals(eventName, rr.getEventName());
+        assertEquals(eventString, rr.getEvent());
+
+        rr.setTimestamp(1234567);
+        assertEquals(1234567, rr.getTimestamp());
+
+        assertEquals("ApexRestRequest [executionId=1, eventName=EventName, event=The Event String, timestamp=1234567]",
+                        rr.toString());
+    }
+}
diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/ApexRestRequestorConsumerTest.java b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/ApexRestRequestorConsumerTest.java
new file mode 100644
index 000000000..44e020381
--- /dev/null
+++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/ApexRestRequestorConsumerTest.java
@@ -0,0 +1,137 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2018 Ericsson. 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.plugins.event.carrier.restrequestor;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.fail;
+
+import org.junit.Test;
+import org.onap.policy.apex.core.infrastructure.threading.ThreadUtilities;
+import org.onap.policy.apex.service.engine.event.ApexEventException;
+import org.onap.policy.apex.service.engine.event.ApexEventReceiver;
+import org.onap.policy.apex.service.parameters.eventhandler.EventHandlerParameters;
+import org.onap.policy.apex.service.parameters.eventhandler.EventHandlerPeeredMode;
+
+/**
+ * Test the ApexRestRequestorConsumer class.
+ *
+ */
+public class ApexRestRequestorConsumerTest {
+    @Test
+    public void testApexRestRequestorConsumerSetup() {
+        ApexRestRequestorConsumer consumer = new ApexRestRequestorConsumer();
+        assertNotNull(consumer);
+
+        String consumerName = "ConsumerName";
+
+        EventHandlerParameters consumerParameters = new EventHandlerParameters();
+        ApexEventReceiver incomingEventReceiver = null;
+
+        try {
+            consumer.init(consumerName, consumerParameters, incomingEventReceiver);
+            fail("test should throw an exception here");
+        } catch (ApexEventException aee) {
+            assertEquals("specified consumer properties are not applicable to REST Requestor consumer (ConsumerName)",
+                            aee.getMessage());
+        }
+
+        RestRequestorCarrierTechnologyParameters rrctp = new RestRequestorCarrierTechnologyParameters();
+        consumerParameters.setCarrierTechnologyParameters(rrctp);
+        try {
+            consumer.init(consumerName, consumerParameters, incomingEventReceiver);
+            fail("test should throw an exception here");
+        } catch (ApexEventException aee) {
+            assertEquals("REST Requestor consumer (ConsumerName) must run in peered requestor mode "
+                            + "with a REST Requestor producer", aee.getMessage());
+        }
+
+        consumerParameters.setPeeredMode(EventHandlerPeeredMode.REQUESTOR, true);
+        rrctp.setHttpMethod(null);
+        try {
+            consumer.init(consumerName, consumerParameters, incomingEventReceiver);
+            fail("test should throw an exception here");
+        } catch (ApexEventException aee) {
+            assertEquals("no URL has been specified on REST Requestor consumer (ConsumerName)", aee.getMessage());
+        }
+
+        rrctp.setHttpMethod(RestRequestorCarrierTechnologyParameters.HttpMethod.GET);
+        rrctp.setUrl("ZZZZ");
+        try {
+            consumer.init(consumerName, consumerParameters, incomingEventReceiver);
+            fail("test should throw an exception here");
+        } catch (ApexEventException aee) {
+            assertEquals("invalid URL has been specified on REST Requestor consumer (ConsumerName)", aee.getMessage());
+        }
+
+        rrctp.setHttpMethod(RestRequestorCarrierTechnologyParameters.HttpMethod.GET);
+        rrctp.setUrl("http://www.onap.org");
+        consumerParameters.setPeerTimeout(EventHandlerPeeredMode.REQUESTOR, 0);
+
+        try {
+            consumer.init(consumerName, consumerParameters, incomingEventReceiver);
+        } catch (ApexEventException aee) {
+            fail("test should not throw an exception");
+        }
+
+        try {
+            consumer.processRestRequest(null);
+            fail("test should throw an exception here");
+        } catch (Exception ex) {
+            assertEquals("could not queue request \"null\" on REST Requestor consumer (ConsumerName)",
+                            ex.getMessage());
+        }
+
+        assertEquals("ConsumerName", consumer.getName());
+        assertEquals(0, consumer.getEventsReceived());
+        assertEquals(null, consumer.getPeeredReference(EventHandlerPeeredMode.REQUESTOR));
+    }
+
+    @Test
+    public void testApexRestRequestorConsumerRequest() {
+        ApexRestRequestorConsumer consumer = new ApexRestRequestorConsumer();
+        assertNotNull(consumer);
+
+        String consumerName = "ConsumerName";
+
+        EventHandlerParameters consumerParameters = new EventHandlerParameters();
+        ApexEventReceiver incomingEventReceiver = null;
+        RestRequestorCarrierTechnologyParameters rrctp = new RestRequestorCarrierTechnologyParameters();
+        consumerParameters.setCarrierTechnologyParameters(rrctp);
+        consumerParameters.setPeeredMode(EventHandlerPeeredMode.REQUESTOR, true);
+        rrctp.setHttpMethod(RestRequestorCarrierTechnologyParameters.HttpMethod.GET);
+        rrctp.setUrl("http://www.onap.org");
+        consumerParameters.setPeerTimeout(EventHandlerPeeredMode.REQUESTOR, 0);
+
+        // Test should time out requests
+        try {
+            consumer.init(consumerName, consumerParameters, incomingEventReceiver);
+            consumer.start();
+            ApexRestRequest request = new ApexRestRequest(123, "EventName", "Event body");
+            consumer.processRestRequest(request);
+            ThreadUtilities.sleep(2000);
+            consumer.stop();
+            assertEquals(0, consumer.getEventsReceived());
+        } catch (ApexEventException aee) {
+            fail("test should not throw an exception");
+        }
+    }
+}
diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/ApexRestRequestorProducerTest.java b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/ApexRestRequestorProducerTest.java
new file mode 100644
index 000000000..136c189db
--- /dev/null
+++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/ApexRestRequestorProducerTest.java
@@ -0,0 +1,145 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2018 Ericsson. 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.plugins.event.carrier.restrequestor;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.fail;
+
+import org.junit.Test;
+import org.onap.policy.apex.service.engine.event.ApexEventConsumer;
+import org.onap.policy.apex.service.engine.event.ApexEventException;
+import org.onap.policy.apex.service.engine.event.PeeredReference;
+import org.onap.policy.apex.service.engine.event.SynchronousEventCache;
+import org.onap.policy.apex.service.engine.event.impl.filecarrierplugin.consumer.ApexFileEventConsumer;
+import org.onap.policy.apex.service.parameters.eventhandler.EventHandlerParameters;
+import org.onap.policy.apex.service.parameters.eventhandler.EventHandlerPeeredMode;
+
+/**
+ * Test the ApexRestRequestorProducer class.
+ */
+public class ApexRestRequestorProducerTest {
+
+    @Test
+    public void testApexRestRequestorProducerMethods() {
+        ApexRestRequestorProducer producer = new ApexRestRequestorProducer();
+        assertNotNull(producer);
+
+        String producerName = "ProducerName";
+        EventHandlerParameters producerParameters = new EventHandlerParameters();
+
+        try {
+            producer.init(producerName, producerParameters);
+        } catch (ApexEventException aee) {
+            assertEquals("specified producer properties are not applicable to REST requestor producer (ProducerName)",
+                            aee.getMessage());
+        }
+
+        RestRequestorCarrierTechnologyParameters rrctp = new RestRequestorCarrierTechnologyParameters();
+        producerParameters.setCarrierTechnologyParameters(rrctp);
+        try {
+            producer.init(producerName, producerParameters);
+            fail("test should throw an exception here");
+        } catch (ApexEventException aee) {
+            assertEquals("REST Requestor producer (ProducerName) must run in peered requestor mode "
+                            + "with a REST Requestor consumer", aee.getMessage());
+        }
+
+        producerParameters.setPeeredMode(EventHandlerPeeredMode.REQUESTOR, true);
+        rrctp.setUrl("ZZZZ");
+        try {
+            producer.init(producerName, producerParameters);
+            fail("test should throw an exception here");
+        } catch (ApexEventException aee) {
+            assertEquals("URL may not be specified on REST Requestor producer (ProducerName)", aee.getMessage());
+        }
+
+        rrctp.setUrl(null);
+        rrctp.setHttpMethod(RestRequestorCarrierTechnologyParameters.HttpMethod.GET);
+        try {
+            producer.init(producerName, producerParameters);
+            fail("test should throw an exception here");
+        } catch (ApexEventException aee) {
+            assertEquals("HTTP method may not be specified on REST Requestor producer (ProducerName)",
+                            aee.getMessage());
+        }
+
+        rrctp.setHttpMethod(null);
+        try {
+            producer.init(producerName, producerParameters);
+            producer.stop();
+        } catch (ApexEventException aee) {
+            fail("test should not throw an exception here");
+        }
+
+        assertEquals("ProducerName", producer.getName());
+        assertEquals(0, producer.getEventsSent());
+        assertEquals(null, producer.getPeeredReference(EventHandlerPeeredMode.REQUESTOR));
+    }
+
+    @Test
+    public void testApexRestRequestorProducerRequest() {
+        ApexRestRequestorProducer producer = new ApexRestRequestorProducer();
+
+        String producerName = "ProducerName";
+        EventHandlerParameters producerParameters = new EventHandlerParameters();
+
+        RestRequestorCarrierTechnologyParameters rrctp = new RestRequestorCarrierTechnologyParameters();
+        producerParameters.setCarrierTechnologyParameters(rrctp);
+        producerParameters.setPeeredMode(EventHandlerPeeredMode.REQUESTOR, true);
+        rrctp.setUrl(null);
+        rrctp.setHttpMethod(null);
+
+        try {
+            producer.init(producerName, producerParameters);
+            producer.stop();
+        } catch (ApexEventException aee) {
+            fail("test should not throw an exception here");
+        }
+
+        String eventName = "EventName";
+        String event = "This is the event";
+
+        try {
+            producer.sendEvent(12345, eventName, event);
+            fail("test should throw an exception here");
+        } catch (Exception aee) {
+            assertEquals("send of event to URL \"null\" failed, REST response consumer is not defined\n"
+                            + "This is the event", aee.getMessage());
+        }
+
+        ApexEventConsumer consumer = new ApexFileEventConsumer();
+        SynchronousEventCache eventCache = new SynchronousEventCache(EventHandlerPeeredMode.SYNCHRONOUS, consumer,
+                        producer, 1000);
+        producer.setPeeredReference(EventHandlerPeeredMode.SYNCHRONOUS, eventCache);
+
+        PeeredReference peeredReference = new PeeredReference(EventHandlerPeeredMode.REQUESTOR, consumer, producer);
+        producer.setPeeredReference(EventHandlerPeeredMode.REQUESTOR, peeredReference);
+        try {
+            producer.sendEvent(12345, eventName, event);
+            fail("test should throw an exception here");
+        } catch (Exception aee) {
+            assertEquals("send of event to URL \"null\" failed, REST response consumer "
+                            + "is not an instance of ApexRestRequestorConsumer\n" + "This is the event",
+                            aee.getMessage());
+        }
+    }
+}
diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/RestRequestorCarrierTechnologyParametersTest.java b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/RestRequestorCarrierTechnologyParametersTest.java
new file mode 100644
index 000000000..7be42e264
--- /dev/null
+++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/RestRequestorCarrierTechnologyParametersTest.java
@@ -0,0 +1,146 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2018 Ericsson. 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.plugins.event.carrier.restrequestor;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import org.junit.Test;
+import org.onap.policy.apex.service.engine.main.ApexCommandLineArguments;
+import org.onap.policy.apex.service.parameters.ApexParameterHandler;
+import org.onap.policy.apex.service.parameters.ApexParameters;
+import org.onap.policy.common.parameters.ParameterException;
+
+/**
+ * Test REST Requestor carrier technology parameters.
+ */
+public class RestRequestorCarrierTechnologyParametersTest {
+
+    @Test
+    public void testRestRequestorCarrierTechnologyParametersBadList() {
+        ApexCommandLineArguments arguments = new ApexCommandLineArguments();
+        arguments.setConfigurationFilePath("src/test/resources/prodcons/RESTRequestorWithHTTPHeaderBadList.json");
+        arguments.setRelativeFileRoot(".");
+
+        try {
+            new ApexParameterHandler().getParameters(arguments);
+            fail("test should throw an exception here");
+        } catch (ParameterException pe) {
+            assertTrue(pe.getMessage().contains("HTTP header array entry is null\n    parameter"));
+            assertTrue(pe.getMessage().trim().endsWith("HTTP header array entry is null"));
+        }
+    }
+
+    @Test
+    public void testRestRequestorCarrierTechnologyParametersNotKvPairs() {
+        ApexCommandLineArguments arguments = new ApexCommandLineArguments();
+        arguments.setConfigurationFilePath("src/test/resources/prodcons/RESTRequestorWithHTTPHeaderNotKvPairs.json");
+        arguments.setRelativeFileRoot(".");
+
+        try {
+            new ApexParameterHandler().getParameters(arguments);
+            fail("test should throw an exception here");
+        } catch (ParameterException pe) {
+            assertTrue(pe.getMessage()
+                            .contains("HTTP header array entries must have one key and one value: [aaa, bbb, ccc]"));
+            assertTrue(pe.getMessage().trim()
+                            .endsWith("HTTP header array entries must have one key and one value: [aaa]"));
+        }
+    }
+
+    @Test
+    public void testRestRequestorCarrierTechnologyParametersNulls() {
+        ApexCommandLineArguments arguments = new ApexCommandLineArguments();
+        arguments.setConfigurationFilePath("src/test/resources/prodcons/RESTRequestorWithHTTPHeaderNulls.json");
+        arguments.setRelativeFileRoot(".");
+
+        try {
+            new ApexParameterHandler().getParameters(arguments);
+            fail("test should throw an exception here");
+        } catch (ParameterException pe) {
+            assertTrue(pe.getMessage().contains("HTTP header key is null or blank: [null, bbb]"));
+            assertTrue(pe.getMessage().trim().endsWith("HTTP header value is null or blank: [ccc, null]"));
+        }
+    }
+
+    @Test
+    public void testRestRequestorCarrierTechnologyParametersOk() {
+        ApexCommandLineArguments arguments = new ApexCommandLineArguments();
+        arguments.setConfigurationFilePath("src/test/resources/prodcons/RESTRequestorWithHTTPHeaderOK.json");
+        arguments.setRelativeFileRoot(".");
+
+        try {
+            ApexParameters parameters = new ApexParameterHandler().getParameters(arguments);
+
+            RestRequestorCarrierTechnologyParameters rrctp0 = (RestRequestorCarrierTechnologyParameters) parameters
+                            .getEventInputParameters().get("RestRequestorConsumer0").getCarrierTechnologyParameters();
+            assertEquals(0, rrctp0.getHttpHeaders().length);
+
+            RestRequestorCarrierTechnologyParameters rrctp1 = (RestRequestorCarrierTechnologyParameters) parameters
+                            .getEventInputParameters().get("RestRequestorConsumer1").getCarrierTechnologyParameters();
+            assertEquals(3, rrctp1.getHttpHeaders().length);
+            assertEquals("bbb", rrctp1.getHttpHeadersAsMultivaluedMap().get("aaa").get(0));
+            assertEquals("ddd", rrctp1.getHttpHeadersAsMultivaluedMap().get("ccc").get(0));
+            assertEquals("fff", rrctp1.getHttpHeadersAsMultivaluedMap().get("eee").get(0));
+        } catch (ParameterException pe) {
+            fail("test should not throw an exception");
+        }
+    }
+
+    @Test
+    public void testGettersAndSetters() {
+        RestRequestorCarrierTechnologyParameters rrctp = new RestRequestorCarrierTechnologyParameters();
+
+        rrctp.setUrl("http://some.where");
+        assertEquals("http://some.where", rrctp.getUrl());
+
+        String[][] httpHeaders = new String[2][2];
+        httpHeaders[0][0] = "aaa";
+        httpHeaders[0][1] = "bbb";
+        httpHeaders[1][0] = "ccc";
+        httpHeaders[1][1] = "ddd";
+
+        rrctp.setHttpHeaders(httpHeaders);
+        assertEquals("aaa", rrctp.getHttpHeaders()[0][0]);
+        assertEquals("bbb", rrctp.getHttpHeaders()[0][1]);
+        assertEquals("ccc", rrctp.getHttpHeaders()[1][0]);
+        assertEquals("ddd", rrctp.getHttpHeaders()[1][1]);
+
+        rrctp.setHttpHeaders(null);
+        assertFalse(rrctp.checkHttpHeadersSet());
+
+        String[][] httpHeadersZeroLength = new String[0][0];
+        rrctp.setHttpHeaders(httpHeadersZeroLength);
+        assertFalse(rrctp.checkHttpHeadersSet());
+
+        rrctp.setHttpHeaders(httpHeaders);
+        assertTrue(rrctp.checkHttpHeadersSet());
+
+        rrctp.setHttpMethod(RestRequestorCarrierTechnologyParameters.HttpMethod.DELETE);
+        assertEquals(RestRequestorCarrierTechnologyParameters.HttpMethod.DELETE, rrctp.getHttpMethod());
+
+        assertEquals("RESTRequestorCarrierTechnologyParameters "
+                        + "[url=http://some.where, httpMethod=DELETE, httpHeaders=[[aaa, bbb], [ccc, ddd]]]",
+                        rrctp.toString());
+    }
+}
diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/apps/uservice/test/adapt/restrequestor/RestRequestorTest.java b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/RestRequestorTest.java
index 7abed5a41..a9dfd8dc5 100644
--- a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/apps/uservice/test/adapt/restrequestor/RestRequestorTest.java
+++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/RestRequestorTest.java
@@ -18,7 +18,7 @@
  * ============LICENSE_END=========================================================
  */
 
-package org.onap.policy.apex.apps.uservice.test.adapt.restrequestor;
+package org.onap.policy.apex.plugins.event.carrier.restrequestor;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
@@ -68,7 +68,7 @@ public class RestRequestorTest {
      */
     @BeforeClass
     public static void setUp() throws Exception {
-        final ResourceConfig rc = new ResourceConfig(RestRequestorEndpointTest.class);
+        final ResourceConfig rc = new ResourceConfig(SupportRestRequestorEndpoint.class);
         server = GrizzlyHttpServerFactory.createHttpServer(URI.create(BASE_URI), rc);
 
         while (!server.isStarted()) {
@@ -95,7 +95,7 @@ public class RestRequestorTest {
      */
     @Before
     public void resetCounters() {
-        RestRequestorEndpointTest.resetCounters();
+        SupportRestRequestorEndpoint.resetCounters();
     }
 
     /**
@@ -147,6 +147,52 @@ public class RestRequestorTest {
     }
 
     /**
+     * Test rest requestor get empty.
+     *
+     * @throws MessagingException the messaging exception
+     * @throws ApexException the apex exception
+     * @throws IOException Signals that an I/O exception has occurred.
+     */
+    @Test
+    public void testRestRequestorGetEmpty() throws MessagingException, ApexException, IOException {
+        final Client client = ClientBuilder.newClient();
+
+        final String[] args =
+            { "src/test/resources/prodcons/File2RESTRequest2FileGetEmpty.json" };
+        final ApexMain apexMain = new ApexMain(args);
+
+        Response response = null;
+
+        // Wait for the required amount of events to be received or for 10 seconds
+        Double getsSoFar = 0.0;
+        for (int i = 0; i < 40; i++) {
+            ThreadUtilities.sleep(100);
+
+            response = client.target("http://localhost:32801/TestRESTRequestor/apex/event/Stats")
+                            .request("application/json").get();
+
+            if (Response.Status.OK.getStatusCode() != response.getStatus()) {
+                break;
+            }
+
+            final String responseString = response.readEntity(String.class);
+
+            @SuppressWarnings("unchecked")
+            final Map<String, Object> jsonMap = new Gson().fromJson(responseString, Map.class);
+            getsSoFar = Double.valueOf(jsonMap.get("GET").toString());
+
+            if (getsSoFar >= 50.0) {
+                break;
+            }
+        }
+
+        apexMain.shutdown();
+        client.close();
+
+        assertEquals(Response.Status.OK.getStatusCode(), response.getStatus());
+    }
+
+    /**
      * Test REST requestor put.
      *
      * @throws MessagingException the messaging exception
diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/apps/uservice/test/adapt/restrequestor/RestRequestorEndpointTest.java b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/SupportRestRequestorEndpoint.java
index f84b6a703..8380d0a61 100644
--- a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/apps/uservice/test/adapt/restrequestor/RestRequestorEndpointTest.java
+++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/java/org/onap/policy/apex/plugins/event/carrier/restrequestor/SupportRestRequestorEndpoint.java
@@ -18,7 +18,7 @@
  * ============LICENSE_END=========================================================
  */
 
-package org.onap.policy.apex.apps.uservice.test.adapt.restrequestor;
+package org.onap.policy.apex.plugins.event.carrier.restrequestor;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
@@ -38,7 +38,7 @@ import javax.ws.rs.core.Response;
  * The Class TestRestRequestorEndpoint.
  */
 @Path("/apex")
-public class RestRequestorEndpointTest {
+public class SupportRestRequestorEndpoint {
 
     private static Object counterLock = new Object();
     private static int postMessagesReceived = 0;
diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/resources/prodcons/File2RESTRequest2FileGetEmpty.json b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/resources/prodcons/File2RESTRequest2FileGetEmpty.json
new file mode 100644
index 000000000..16baced07
--- /dev/null
+++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/resources/prodcons/File2RESTRequest2FileGetEmpty.json
@@ -0,0 +1,75 @@
+{
+    "engineServiceParameters": {
+        "name": "MyApexEngine",
+        "version": "0.0.1",
+        "id": 45,
+        "instanceCount": 4,
+        "deploymentPort": 12561,
+        "policyModelFileName": "src/test/resources/policymodels/RequestorModel.json",
+        "engineParameters": {
+            "executorParameters": {
+                "JAVASCRIPT": {
+                    "parameterClassName": "org.onap.policy.apex.plugins.executor.javascript.JavascriptExecutorParameters"
+                }
+            }
+        }
+    },
+    "eventInputParameters": {
+        "FileConsumer": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "FILE",
+                "parameters": {
+                    "fileName": "src/test/resources/events/EventsIn.json"
+                }
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            }
+        },
+        "RestRequestorConsumer": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "RESTREQUESTOR",
+                "parameterClassName": "org.onap.policy.apex.plugins.event.carrier.restrequestor.RestRequestorCarrierTechnologyParameters",
+                "parameters": {
+                    "url": "http://localhost:32801/TestRESTRequestor/apex/event/GetEmptyEvent",
+                    "httpMethod": "GET",
+                    "restRequestTimeout": 2000
+                }
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            },
+            "eventNameFilter": "ResponseEvent",
+            "requestorMode": true,
+            "requestorPeer": "RestRequestorProducer",
+            "requestorTimeout": 2000
+        }
+    },
+    "eventOutputParameters": {
+        "RestRequestorProducer": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "RESTREQUESTOR",
+                "parameterClassName": "org.onap.policy.apex.plugins.event.carrier.restrequestor.RestRequestorCarrierTechnologyParameters"
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            },
+            "eventNameFilter": "RequestEvent",
+            "requestorMode": true,
+            "requestorPeer": "RestRequestorConsumer",
+            "requestorTimeout": 2000
+        },
+        "FileProducer": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "FILE",
+                "parameters": {
+                    "fileName": "src/test/resources/events/EventsOut.json"
+                }
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            },
+            "eventNameFilter": "BasicEvent"
+        }
+    }
+}
diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/resources/prodcons/File2RESTRequest2FilePut.json b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/resources/prodcons/File2RESTRequest2FilePut.json
index ac418e623..c66051ce5 100644
--- a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/resources/prodcons/File2RESTRequest2FilePut.json
+++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/resources/prodcons/File2RESTRequest2FilePut.json
@@ -33,7 +33,11 @@
                 "parameters": {
                     "url": "http://localhost:32801/TestRESTRequestor/apex/event/PutEvent",
                     "httpMethod": "PUT",
-                    "restRequestTimeout": 2000
+                    "restRequestTimeout": 2000,
+                    "httpHeaders" : [
+                        ["Content-Type", "application/json"],
+                        ["Date", "Tue, 4 Dec 2018 14:57:12 GMT"]
+                    ]
                 }
             },
             "eventProtocolParameters": {
diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/resources/prodcons/RESTRequestorWithHTTPHeaderBadList.json b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/resources/prodcons/RESTRequestorWithHTTPHeaderBadList.json
new file mode 100644
index 000000000..c71911aab
--- /dev/null
+++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/resources/prodcons/RESTRequestorWithHTTPHeaderBadList.json
@@ -0,0 +1,90 @@
+{
+    "engineServiceParameters": {
+        "name": "MyApexEngine",
+        "version": "0.0.1",
+        "id": 45,
+        "instanceCount": 4,
+        "deploymentPort": 12561,
+        "policyModelFileName": "src/test/resources/policymodels/RequestorModel.json",
+        "engineParameters": {
+            "executorParameters": {
+                "JAVASCRIPT": {
+                    "parameterClassName": "org.onap.policy.apex.plugins.executor.javascript.JavascriptExecutorParameters"
+                }
+            }
+        }
+    },
+    "eventInputParameters": {
+        "RestRequestorConsumer0": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "RESTREQUESTOR",
+                "parameterClassName": "org.onap.policy.apex.plugins.event.carrier.restrequestor.RestRequestorCarrierTechnologyParameters",
+                "parameters": {
+                    "url": "http://localhost:32801/TestRESTRequestor/apex/event/GetEvent",
+                    "httpMethod": "GET",
+                    "restRequestTimeout": 2000,
+                    "httpHeaders" : [
+                        ["aaa", "bbb"],
+                        ["ccc", "ddd"],
+                    ]
+                }
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            },
+            "eventNameFilter": "ResponseEvent",
+            "requestorMode": true,
+            "requestorPeer": "RestRequestorProducer0",
+            "requestorTimeout": 2000
+        },
+        "RestRequestorConsumer1": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "RESTREQUESTOR",
+                "parameterClassName": "org.onap.policy.apex.plugins.event.carrier.restrequestor.RestRequestorCarrierTechnologyParameters",
+                "parameters": {
+                    "url": "http://localhost:32801/TestRESTRequestor/apex/event/GetEvent",
+                    "httpMethod": "GET",
+                    "restRequestTimeout": 2000,
+                    "httpHeaders" : [
+                        ,
+                    ]
+                }
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            },
+            "eventNameFilter": "ResponseEvent",
+            "requestorMode": true,
+            "requestorPeer": "RestRequestorProducer1",
+            "requestorTimeout": 2000
+        }
+    },
+    "eventOutputParameters": {
+        "RestRequestorProducer0": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "RESTREQUESTOR",
+                "parameterClassName": "org.onap.policy.apex.plugins.event.carrier.restrequestor.RestRequestorCarrierTechnologyParameters"
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            },
+            "eventNameFilter": "RequestEvent",
+            "requestorMode": true,
+            "requestorPeer": "RestRequestorConsumer0",
+            "requestorTimeout": 2000
+        },
+        "RestRequestorProducer1": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "RESTREQUESTOR",
+                "parameterClassName": "org.onap.policy.apex.plugins.event.carrier.restrequestor.RestRequestorCarrierTechnologyParameters"
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            },
+            "eventNameFilter": "RequestEvent",
+            "requestorMode": true,
+            "requestorPeer": "RestRequestorConsumer1",
+            "requestorTimeout": 2000
+        }
+    }
+}
diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/resources/prodcons/RESTRequestorWithHTTPHeaderNotKvPairs.json b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/resources/prodcons/RESTRequestorWithHTTPHeaderNotKvPairs.json
new file mode 100644
index 000000000..dc63c5884
--- /dev/null
+++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/resources/prodcons/RESTRequestorWithHTTPHeaderNotKvPairs.json
@@ -0,0 +1,89 @@
+{
+    "engineServiceParameters": {
+        "name": "MyApexEngine",
+        "version": "0.0.1",
+        "id": 45,
+        "instanceCount": 4,
+        "deploymentPort": 12561,
+        "policyModelFileName": "src/test/resources/policymodels/RequestorModel.json",
+        "engineParameters": {
+            "executorParameters": {
+                "JAVASCRIPT": {
+                    "parameterClassName": "org.onap.policy.apex.plugins.executor.javascript.JavascriptExecutorParameters"
+                }
+            }
+        }
+    },
+    "eventInputParameters": {
+        "RestRequestorConsumer0": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "RESTREQUESTOR",
+                "parameterClassName": "org.onap.policy.apex.plugins.event.carrier.restrequestor.RestRequestorCarrierTechnologyParameters",
+                "parameters": {
+                    "url": "http://localhost:32801/TestRESTRequestor/apex/event/GetEvent",
+                    "httpMethod": "GET",
+                    "restRequestTimeout": 2000,
+                    "httpHeaders" : [
+                        ["aaa", "bbb", "ccc"]
+                    ]
+                }
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            },
+            "eventNameFilter": "ResponseEvent",
+            "requestorMode": true,
+            "requestorPeer": "RestRequestorProducer0",
+            "requestorTimeout": 2000
+        },
+        "RestRequestorConsumer1": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "RESTREQUESTOR",
+                "parameterClassName": "org.onap.policy.apex.plugins.event.carrier.restrequestor.RestRequestorCarrierTechnologyParameters",
+                "parameters": {
+                    "url": "http://localhost:32801/TestRESTRequestor/apex/event/GetEvent",
+                    "httpMethod": "GET",
+                    "restRequestTimeout": 2000,
+                    "httpHeaders" : [
+                        ["aaa"]
+                    ]
+                }
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            },
+            "eventNameFilter": "ResponseEvent",
+            "requestorMode": true,
+            "requestorPeer": "RestRequestorProducer1",
+            "requestorTimeout": 2000
+        }
+    },
+    "eventOutputParameters": {
+        "RestRequestorProducer0": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "RESTREQUESTOR",
+                "parameterClassName": "org.onap.policy.apex.plugins.event.carrier.restrequestor.RestRequestorCarrierTechnologyParameters"
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            },
+            "eventNameFilter": "RequestEvent",
+            "requestorMode": true,
+            "requestorPeer": "RestRequestorConsumer0",
+            "requestorTimeout": 2000
+        },
+        "RestRequestorProducer1": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "RESTREQUESTOR",
+                "parameterClassName": "org.onap.policy.apex.plugins.event.carrier.restrequestor.RestRequestorCarrierTechnologyParameters"
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            },
+            "eventNameFilter": "RequestEvent",
+            "requestorMode": true,
+            "requestorPeer": "RestRequestorConsumer1",
+            "requestorTimeout": 2000
+        }
+    }
+}
diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/resources/prodcons/RESTRequestorWithHTTPHeaderNulls.json b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/resources/prodcons/RESTRequestorWithHTTPHeaderNulls.json
new file mode 100644
index 000000000..9992e4f28
--- /dev/null
+++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/resources/prodcons/RESTRequestorWithHTTPHeaderNulls.json
@@ -0,0 +1,92 @@
+{
+    "engineServiceParameters": {
+        "name": "MyApexEngine",
+        "version": "0.0.1",
+        "id": 45,
+        "instanceCount": 4,
+        "deploymentPort": 12561,
+        "policyModelFileName": "src/test/resources/policymodels/RequestorModel.json",
+        "engineParameters": {
+            "executorParameters": {
+                "JAVASCRIPT": {
+                    "parameterClassName": "org.onap.policy.apex.plugins.executor.javascript.JavascriptExecutorParameters"
+                }
+            }
+        }
+    },
+    "eventInputParameters": {
+        "RestRequestorConsumer0": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "RESTREQUESTOR",
+                "parameterClassName": "org.onap.policy.apex.plugins.event.carrier.restrequestor.RestRequestorCarrierTechnologyParameters",
+                "parameters": {
+                    "url": "http://localhost:32801/TestRESTRequestor/apex/event/GetEvent",
+                    "httpMethod": "GET",
+                    "restRequestTimeout": 2000,
+                    "httpHeaders" : [
+                        [null, "bbb"],
+                        ["ccc", "ddd"]
+                    ]
+                }
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            },
+            "eventNameFilter": "ResponseEvent",
+            "requestorMode": true,
+            "requestorPeer": "RestRequestorProducer0",
+            "requestorTimeout": 2000
+        },
+        "RestRequestorConsumer1": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "RESTREQUESTOR",
+                "parameterClassName": "org.onap.policy.apex.plugins.event.carrier.restrequestor.RestRequestorCarrierTechnologyParameters",
+                "parameters": {
+                    "url": "http://localhost:32801/TestRESTRequestor/apex/event/GetEvent",
+                    "httpMethod": "GET",
+                    "restRequestTimeout": 2000,
+                    "httpHeaders" : [
+                        ["aaa", "bbb"],
+                        ["ccc", null],
+                        ["eee", "fff"]
+                    ]
+                }
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            },
+            "eventNameFilter": "ResponseEvent",
+            "requestorMode": true,
+            "requestorPeer": "RestRequestorProducer1",
+            "requestorTimeout": 2000
+        }
+    },
+    "eventOutputParameters": {
+        "RestRequestorProducer0": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "RESTREQUESTOR",
+                "parameterClassName": "org.onap.policy.apex.plugins.event.carrier.restrequestor.RestRequestorCarrierTechnologyParameters"
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            },
+            "eventNameFilter": "RequestEvent",
+            "requestorMode": true,
+            "requestorPeer": "RestRequestorConsumer0",
+            "requestorTimeout": 2000
+        },
+        "RestRequestorProducer1": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "RESTREQUESTOR",
+                "parameterClassName": "org.onap.policy.apex.plugins.event.carrier.restrequestor.RestRequestorCarrierTechnologyParameters"
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            },
+            "eventNameFilter": "RequestEvent",
+            "requestorMode": true,
+            "requestorPeer": "RestRequestorConsumer1",
+            "requestorTimeout": 2000
+        }
+    }
+}
diff --git a/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/resources/prodcons/RESTRequestorWithHTTPHeaderOK.json b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/resources/prodcons/RESTRequestorWithHTTPHeaderOK.json
new file mode 100644
index 000000000..e8a25c9fb
--- /dev/null
+++ b/plugins/plugins-event/plugins-event-carrier/plugins-event-carrier-restrequestor/src/test/resources/prodcons/RESTRequestorWithHTTPHeaderOK.json
@@ -0,0 +1,90 @@
+{
+    "engineServiceParameters": {
+        "name": "MyApexEngine",
+        "version": "0.0.1",
+        "id": 45,
+        "instanceCount": 4,
+        "deploymentPort": 12561,
+        "policyModelFileName": "src/test/resources/policymodels/RequestorModel.json",
+        "engineParameters": {
+            "executorParameters": {
+                "JAVASCRIPT": {
+                    "parameterClassName": "org.onap.policy.apex.plugins.executor.javascript.JavascriptExecutorParameters"
+                }
+            }
+        }
+    },
+    "eventInputParameters": {
+        "RestRequestorConsumer0": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "RESTREQUESTOR",
+                "parameterClassName": "org.onap.policy.apex.plugins.event.carrier.restrequestor.RestRequestorCarrierTechnologyParameters",
+                "parameters": {
+                    "url": "http://localhost:32801/TestRESTRequestor/apex/event/GetEvent",
+                    "httpMethod": "GET",
+                    "restRequestTimeout": 2000,
+                    "httpHeaders" : [
+                    ]
+                }
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            },
+            "eventNameFilter": "ResponseEvent",
+            "requestorMode": true,
+            "requestorPeer": "RestRequestorProducer0",
+            "requestorTimeout": 2000
+        },
+        "RestRequestorConsumer1": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "RESTREQUESTOR",
+                "parameterClassName": "org.onap.policy.apex.plugins.event.carrier.restrequestor.RestRequestorCarrierTechnologyParameters",
+                "parameters": {
+                    "url": "http://localhost:32801/TestRESTRequestor/apex/event/GetEvent",
+                    "httpMethod": "GET",
+                    "restRequestTimeout": 2000,
+                    "httpHeaders" : [
+                        ["aaa", "bbb"],
+                        ["ccc", "ddd"],
+                        ["eee", "fff"]
+                    ]
+                }
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            },
+            "eventNameFilter": "ResponseEvent",
+            "requestorMode": true,
+            "requestorPeer": "RestRequestorProducer1",
+            "requestorTimeout": 2000
+        }
+    },
+    "eventOutputParameters": {
+        "RestRequestorProducer0": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "RESTREQUESTOR",
+                "parameterClassName": "org.onap.policy.apex.plugins.event.carrier.restrequestor.RestRequestorCarrierTechnologyParameters"
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            },
+            "eventNameFilter": "RequestEvent",
+            "requestorMode": true,
+            "requestorPeer": "RestRequestorConsumer0",
+            "requestorTimeout": 2000
+        },
+        "RestRequestorProducer1": {
+            "carrierTechnologyParameters": {
+                "carrierTechnology": "RESTREQUESTOR",
+                "parameterClassName": "org.onap.policy.apex.plugins.event.carrier.restrequestor.RestRequestorCarrierTechnologyParameters"
+            },
+            "eventProtocolParameters": {
+                "eventProtocol": "JSON"
+            },
+            "eventNameFilter": "RequestEvent",
+            "requestorMode": true,
+            "requestorPeer": "RestRequestorConsumer1",
+            "requestorTimeout": 2000
+        }
+    }
+}