APPC Actor

Issue-ID: POLICY-2363
Signed-off-by: Jim Hahn <jrh3@att.com>
Change-Id: I21908c9875aa1d2ad3678cb7613b5a3e1fada340

7 files changed, 749 insertions, 1 deletions

diff --git a/models-interactions/model-actors/actor.appc/src/main/java/org/onap/policy/controlloop/actor/appc/AppcActorServiceProvider.java b/models-interactions/model-actors/actor.appc/src/main/java/org/onap/policy/controlloop/actor/appc/AppcActorServiceProvider.java
index 2491c33a1..1ec46899f 100644
--- a/models-interactions/model-actors/actor.appc/src/main/java/org/onap/policy/controlloop/actor/appc/AppcActorServiceProvider.java
+++ b/models-interactions/model-actors/actor.appc/src/main/java/org/onap/policy/controlloop/actor/appc/AppcActorServiceProvider.java
@@ -34,6 +34,7 @@ import org.onap.policy.common.utils.coder.StandardCoder;
 import org.onap.policy.controlloop.ControlLoopOperation;
 import org.onap.policy.controlloop.VirtualControlLoopEvent;
 import org.onap.policy.controlloop.actorserviceprovider.impl.BidirectionalTopicActor;
+import org.onap.policy.controlloop.actorserviceprovider.impl.BidirectionalTopicOperator;
 import org.onap.policy.controlloop.policy.Policy;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -74,6 +75,9 @@ public class AppcActorServiceProvider extends BidirectionalTopicActor {
      */
     public AppcActorServiceProvider() {
         super(NAME);
+
+        addOperator(BidirectionalTopicOperator.makeOperator(NAME, ModifyConfigOperation.NAME, this,
+                        AppcOperation.SELECTOR_KEYS, ModifyConfigOperation::new));
     }
 
 
diff --git a/models-interactions/model-actors/actor.appc/src/main/java/org/onap/policy/controlloop/actor/appc/AppcOperation.java b/models-interactions/model-actors/actor.appc/src/main/java/org/onap/policy/controlloop/actor/appc/AppcOperation.java
new file mode 100644
index 000000000..8bc1a7f32
--- /dev/null
+++ b/models-interactions/model-actors/actor.appc/src/main/java/org/onap/policy/controlloop/actor/appc/AppcOperation.java
@@ -0,0 +1,166 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020 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.controlloop.actor.appc;
+
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.UUID;
+import org.onap.policy.appc.CommonHeader;
+import org.onap.policy.appc.Request;
+import org.onap.policy.appc.Response;
+import org.onap.policy.appc.ResponseCode;
+import org.onap.policy.common.utils.coder.CoderException;
+import org.onap.policy.common.utils.coder.StandardCoder;
+import org.onap.policy.controlloop.actorserviceprovider.OperationOutcome;
+import org.onap.policy.controlloop.actorserviceprovider.impl.BidirectionalTopicOperation;
+import org.onap.policy.controlloop.actorserviceprovider.impl.BidirectionalTopicOperator;
+import org.onap.policy.controlloop.actorserviceprovider.parameters.ControlLoopOperationParams;
+import org.onap.policy.controlloop.actorserviceprovider.topic.SelectorKey;
+import org.onap.policy.controlloop.policy.PolicyResult;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Superclass for APPC Operations.
+ */
+public abstract class AppcOperation extends BidirectionalTopicOperation<Request, Response> {
+    private static final Logger logger = LoggerFactory.getLogger(AppcOperation.class);
+    private static final StandardCoder coder = new StandardCoder();
+    public static final String VNF_ID_KEY = "generic-vnf.vnf-id";
+
+    /**
+     * Keys used to match the response with the request listener. The sub request ID is a
+     * UUID, so it can be used to uniquely identify the response.
+     * <p/>
+     * Note: if these change, then {@link #getExpectedKeyValues(int, Request)} must be
+     * updated accordingly.
+     */
+    public static final List<SelectorKey> SELECTOR_KEYS = List.of(new SelectorKey("CommonHeader", "SubRequestID"));
+
+    /**
+     * Constructs the object.
+     *
+     * @param params operation parameters
+     * @param operator operator that created this operation
+     */
+    public AppcOperation(ControlLoopOperationParams params, BidirectionalTopicOperator operator) {
+        super(params, operator, Response.class);
+    }
+
+    /**
+     * Makes a request, given the target VNF. This is a support function for
+     * {@link #makeRequest(int)}.
+     *
+     * @param attempt attempt number
+     * @param targetVnf target VNF
+     * @return a new request
+     */
+    protected Request makeRequest(int attempt, String targetVnf) {
+        Request request = new Request();
+        request.setCommonHeader(new CommonHeader());
+        request.getCommonHeader().setRequestId(params.getRequestId());
+
+        // TODO ok to use UUID, or does it have to be the "attempt"?
+        request.getCommonHeader().setSubRequestId(UUID.randomUUID().toString());
+
+        request.setAction(getName());
+
+        // convert payload strings to objects
+        if (params.getPayload() == null) {
+            logger.info("{}: no payload specified for {}", getFullName(), params.getRequestId());
+        } else {
+            convertPayload(params.getPayload(), request.getPayload());
+        }
+
+        // add/replace specific values
+        request.getPayload().put(VNF_ID_KEY, targetVnf);
+
+        return request;
+    }
+
+    /**
+     * Converts a payload. The original value is assumed to be a JSON string, which is
+     * decoded into an object.
+     *
+     * @param source source from which to get the values
+     * @param target where to place the decoded values
+     */
+    private static void convertPayload(Map<String, String> source, Map<String, Object> target) {
+        for (Entry<String, String> ent : source.entrySet()) {
+            try {
+                target.put(ent.getKey(), coder.decode(ent.getValue(), Object.class));
+
+            } catch (CoderException e) {
+                logger.warn("cannot decode JSON value {}: {}", ent.getKey(), ent.getValue(), e);
+            }
+        }
+    }
+
+    /**
+     * Note: these values must match {@link #SELECTOR_KEYS}.
+     */
+    @Override
+    protected List<String> getExpectedKeyValues(int attempt, Request request) {
+        return List.of(request.getCommonHeader().getSubRequestId());
+    }
+
+    @Override
+    protected Status detmStatus(String rawResponse, Response response) {
+        if (response.getStatus() == null) {
+            throw new IllegalArgumentException("APP-C response is missing the response status");
+        }
+
+        ResponseCode code = ResponseCode.toResponseCode(response.getStatus().getCode());
+        if (code == null) {
+            throw new IllegalArgumentException(
+                            "unknown APPC-C response status code: " + response.getStatus().getCode());
+        }
+
+        switch (code) {
+            case SUCCESS:
+                return Status.SUCCESS;
+            case FAILURE:
+                return Status.FAILURE;
+            case ERROR:
+            case REJECT:
+                throw new IllegalArgumentException("APP-C request was not accepted, code=" + code);
+            case ACCEPT:
+            default:
+                // awaiting a "final" response
+                return Status.STILL_WAITING;
+        }
+    }
+
+    /**
+     * Sets the message to the status description, if available.
+     */
+    @Override
+    public OperationOutcome setOutcome(OperationOutcome outcome, PolicyResult result, Response response) {
+        if (response.getStatus() == null || response.getStatus().getDescription() == null) {
+            return setOutcome(outcome, result);
+        }
+
+        outcome.setResult(result);
+        outcome.setMessage(response.getStatus().getDescription());
+        return outcome;
+    }
+}
diff --git a/models-interactions/model-actors/actor.appc/src/main/java/org/onap/policy/controlloop/actor/appc/ModifyConfigOperation.java b/models-interactions/model-actors/actor.appc/src/main/java/org/onap/policy/controlloop/actor/appc/ModifyConfigOperation.java
new file mode 100644
index 000000000..5839df58e
--- /dev/null
+++ b/models-interactions/model-actors/actor.appc/src/main/java/org/onap/policy/controlloop/actor/appc/ModifyConfigOperation.java
@@ -0,0 +1,75 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020 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.controlloop.actor.appc;
+
+import java.util.concurrent.CompletableFuture;
+import org.onap.aai.domain.yang.GenericVnf;
+import org.onap.policy.aai.AaiConstants;
+import org.onap.policy.aai.AaiCqResponse;
+import org.onap.policy.appc.Request;
+import org.onap.policy.controlloop.actor.aai.AaiCustomQueryOperation;
+import org.onap.policy.controlloop.actorserviceprovider.OperationOutcome;
+import org.onap.policy.controlloop.actorserviceprovider.impl.BidirectionalTopicOperator;
+import org.onap.policy.controlloop.actorserviceprovider.parameters.ControlLoopOperationParams;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class ModifyConfigOperation extends AppcOperation {
+    private static final Logger logger = LoggerFactory.getLogger(ModifyConfigOperation.class);
+
+    public static final String NAME = "ModifyConfig";
+
+    /**
+     * Constructs the object.
+     *
+     * @param params operation parameters
+     * @param operator operator that created this operation
+     */
+    public ModifyConfigOperation(ControlLoopOperationParams params, BidirectionalTopicOperator operator) {
+        super(params, operator);
+    }
+
+    /**
+     * Ensures that A&AI customer query has been performed, and then runs the guard query.
+     */
+    @Override
+    @SuppressWarnings("unchecked")
+    protected CompletableFuture<OperationOutcome> startPreprocessorAsync() {
+        ControlLoopOperationParams cqParams = params.toBuilder().actor(AaiConstants.ACTOR_NAME)
+                        .operation(AaiCustomQueryOperation.NAME).payload(null).retry(null).timeoutSec(null).build();
+
+        // run Custom Query and Guard, in parallel
+        return allOf(() -> params.getContext().obtain(AaiCqResponse.CONTEXT_KEY, cqParams), this::startGuardAsync);
+    }
+
+    @Override
+    protected Request makeRequest(int attempt) {
+        AaiCqResponse cq = params.getContext().getProperty(AaiCqResponse.CONTEXT_KEY);
+
+        GenericVnf genvnf = cq.getGenericVnfByModelInvariantId(params.getTarget().getResourceID());
+        if (genvnf == null) {
+            logger.info("{}: target entity could not be found for {}", getFullName(), params.getRequestId());
+            throw new IllegalArgumentException("target vnf-id could not be found");
+        }
+
+        return makeRequest(attempt, genvnf.getVnfId());
+    }
+}
diff --git a/models-interactions/model-actors/actor.appc/src/test/java/org/onap/policy/controlloop/actor/appc/AppcOperationTest.java b/models-interactions/model-actors/actor.appc/src/test/java/org/onap/policy/controlloop/actor/appc/AppcOperationTest.java
new file mode 100644
index 000000000..8a86b346c
--- /dev/null
+++ b/models-interactions/model-actors/actor.appc/src/test/java/org/onap/policy/controlloop/actor/appc/AppcOperationTest.java
@@ -0,0 +1,195 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020 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.controlloop.actor.appc;
+
+import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertSame;
+
+import java.util.Arrays;
+import java.util.Map;
+import java.util.TreeMap;
+import org.junit.Before;
+import org.junit.Test;
+import org.onap.policy.appc.CommonHeader;
+import org.onap.policy.appc.Request;
+import org.onap.policy.appc.ResponseCode;
+import org.onap.policy.appc.ResponseStatus;
+import org.onap.policy.controlloop.actorserviceprovider.impl.BidirectionalTopicOperation.Status;
+import org.onap.policy.controlloop.policy.PolicyResult;
+
+public class AppcOperationTest extends BasicAppcOperation {
+    private AppcOperation oper;
+
+    /**
+     * Sets up.
+     */
+    @Before
+    public void setUp() throws Exception {
+        super.setUp();
+
+        oper = new AppcOperation(params, operator) {
+            @Override
+            protected Request makeRequest(int attempt) {
+                return oper.makeRequest(attempt, MY_VNF);
+            }
+        };
+    }
+
+    @Test
+    public void testAppcOperation() {
+        assertEquals(DEFAULT_ACTOR, oper.getActorName());
+        assertEquals(DEFAULT_OPERATION, oper.getName());
+    }
+
+    @Test
+    public void testMakeRequest() {
+        Request request = oper.makeRequest(2, MY_VNF);
+        assertEquals(DEFAULT_OPERATION, request.getAction());
+
+        assertNotNull(request.getPayload());
+
+        CommonHeader header = request.getCommonHeader();
+        assertNotNull(header);
+        assertEquals(params.getRequestId(), header.getRequestId());
+
+        String subreq = header.getSubRequestId();
+        assertNotNull(subreq);
+
+        // a subsequent request should have a different sub-request id
+        assertNotEquals(subreq, oper.makeRequest(2, MY_VNF).getCommonHeader().getSubRequestId());
+
+        // repeat using a null payload
+        params = params.toBuilder().payload(null).build();
+        oper = new AppcOperation(params, operator) {
+            @Override
+            protected Request makeRequest(int attempt) {
+                return oper.makeRequest(attempt, MY_VNF);
+            }
+        };
+        assertEquals(Map.of(AppcOperation.VNF_ID_KEY, MY_VNF), oper.makeRequest(2, MY_VNF).getPayload());
+    }
+
+    @Test
+    public void testConvertPayload() {
+        Request request = oper.makeRequest(2, MY_VNF);
+
+        // @formatter:off
+        assertEquals(
+            Map.of(AppcOperation.VNF_ID_KEY, MY_VNF,
+                    KEY1, Map.of("input", "hello"),
+                    KEY2, Map.of("output", "world")),
+            request.getPayload());
+        // @formatter:on
+
+
+        /*
+         * insert invalid json text into the payload.
+         */
+        Map<String, String> payload = new TreeMap<>(params.getPayload());
+        payload.put("invalid-key", "{invalid json");
+
+        params = params.toBuilder().payload(payload).build();
+
+        oper = new AppcOperation(params, operator) {
+            @Override
+            protected Request makeRequest(int attempt) {
+                return oper.makeRequest(attempt, MY_VNF);
+            }
+        };
+        request = oper.makeRequest(2, MY_VNF);
+
+        // @formatter:off
+        assertEquals(
+            Map.of(AppcOperation.VNF_ID_KEY, MY_VNF,
+                    KEY1, Map.of("input", "hello"),
+                    KEY2, Map.of("output", "world")),
+            request.getPayload());
+        // @formatter:on
+    }
+
+    @Test
+    public void testGetExpectedKeyValues() {
+        Request request = oper.makeRequest(2, MY_VNF);
+        assertEquals(Arrays.asList(request.getCommonHeader().getSubRequestId()),
+                        oper.getExpectedKeyValues(50, request));
+    }
+
+    @Test
+    public void testDetmStatusStringResponse() {
+        final ResponseStatus status = response.getStatus();
+
+        // null status
+        response.setStatus(null);
+        assertThatIllegalArgumentException().isThrownBy(() -> oper.detmStatus("", response))
+                        .withMessage("APP-C response is missing the response status");
+        response.setStatus(status);
+
+        // invalid code
+        status.setCode(-45);
+        assertThatIllegalArgumentException().isThrownBy(() -> oper.detmStatus("", response))
+                        .withMessage("unknown APPC-C response status code: -45");
+
+        status.setCode(ResponseCode.SUCCESS.getValue());
+        assertEquals(Status.SUCCESS, oper.detmStatus("", response));
+
+        status.setCode(ResponseCode.FAILURE.getValue());
+        assertEquals(Status.FAILURE, oper.detmStatus("", response));
+
+        status.setCode(ResponseCode.ERROR.getValue());
+        assertThatIllegalArgumentException().isThrownBy(() -> oper.detmStatus("", response))
+                        .withMessage("APP-C request was not accepted, code=" + ResponseCode.ERROR.getValue());
+
+        status.setCode(ResponseCode.REJECT.getValue());
+        assertThatIllegalArgumentException().isThrownBy(() -> oper.detmStatus("", response))
+                        .withMessage("APP-C request was not accepted, code=" + ResponseCode.REJECT.getValue());
+
+        status.setCode(ResponseCode.ACCEPT.getValue());
+        assertEquals(Status.STILL_WAITING, oper.detmStatus("", response));
+    }
+
+    @Test
+    public void testSetOutcome() {
+        final ResponseStatus status = response.getStatus();
+
+        // null status
+        response.setStatus(null);
+        assertSame(outcome, oper.setOutcome(outcome, PolicyResult.SUCCESS, response));
+        assertEquals(PolicyResult.SUCCESS, outcome.getResult());
+        assertNotNull(outcome.getMessage());
+        response.setStatus(status);
+
+        // null description
+        status.setDescription(null);
+        assertSame(outcome, oper.setOutcome(outcome, PolicyResult.FAILURE, response));
+        assertEquals(PolicyResult.FAILURE, outcome.getResult());
+        assertNotNull(outcome.getMessage());
+        status.setDescription(MY_DESCRIPTION);
+
+        for (PolicyResult result : PolicyResult.values()) {
+            assertSame(outcome, oper.setOutcome(outcome, result, response));
+            assertEquals(result, outcome.getResult());
+            assertEquals(MY_DESCRIPTION, outcome.getMessage());
+        }
+    }
+}
diff --git a/models-interactions/model-actors/actor.appc/src/test/java/org/onap/policy/controlloop/actor/appc/AppcServiceProviderTest.java b/models-interactions/model-actors/actor.appc/src/test/java/org/onap/policy/controlloop/actor/appc/AppcServiceProviderTest.java
index 0dfea32d6..305c6d7cd 100644
--- a/models-interactions/model-actors/actor.appc/src/test/java/org/onap/policy/controlloop/actor/appc/AppcServiceProviderTest.java
+++ b/models-interactions/model-actors/actor.appc/src/test/java/org/onap/policy/controlloop/actor/appc/AppcServiceProviderTest.java
@@ -27,9 +27,10 @@ import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertTrue;
 
 import java.time.Instant;
+import java.util.Arrays;
 import java.util.HashMap;
 import java.util.UUID;
-
+import java.util.stream.Collectors;
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
 import org.junit.Test;
@@ -128,6 +129,17 @@ public class AppcServiceProviderTest {
     }
 
     @Test
+    public void testConstructor() {
+        AppcActorServiceProvider prov = new AppcActorServiceProvider();
+
+        // verify that it has the operators we expect
+        var expected = Arrays.asList(ModifyConfigOperation.NAME).stream().sorted().collect(Collectors.toList());
+        var actual = prov.getOperationNames().stream().sorted().collect(Collectors.toList());
+
+        assertEquals(expected.toString(), actual.toString());
+    }
+
+    @Test
     public void testConstructModifyConfigRequest() {
         policy.setPayload(new HashMap<>());
         policy.getPayload().put(KEY1, VALUE1);
diff --git a/models-interactions/model-actors/actor.appc/src/test/java/org/onap/policy/controlloop/actor/appc/BasicAppcOperation.java b/models-interactions/model-actors/actor.appc/src/test/java/org/onap/policy/controlloop/actor/appc/BasicAppcOperation.java
new file mode 100644
index 000000000..cbdcad6b0
--- /dev/null
+++ b/models-interactions/model-actors/actor.appc/src/test/java/org/onap/policy/controlloop/actor/appc/BasicAppcOperation.java
@@ -0,0 +1,191 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020 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.controlloop.actor.appc;
+
+import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.verify;
+
+import java.util.Map;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeoutException;
+import java.util.function.BiConsumer;
+import java.util.function.BiFunction;
+import org.onap.policy.appc.Response;
+import org.onap.policy.appc.ResponseCode;
+import org.onap.policy.appc.ResponseStatus;
+import org.onap.policy.common.utils.coder.CoderException;
+import org.onap.policy.common.utils.coder.StandardCoder;
+import org.onap.policy.common.utils.coder.StandardCoderObject;
+import org.onap.policy.common.utils.resources.ResourceUtils;
+import org.onap.policy.controlloop.actor.test.BasicBidirectionalTopicOperation;
+import org.onap.policy.controlloop.actorserviceprovider.OperationOutcome;
+import org.onap.policy.controlloop.actorserviceprovider.Util;
+import org.onap.policy.controlloop.actorserviceprovider.impl.BidirectionalTopicOperator;
+import org.onap.policy.controlloop.actorserviceprovider.parameters.ControlLoopOperationParams;
+import org.onap.policy.controlloop.policy.PolicyResult;
+import org.onap.policy.controlloop.policy.Target;
+import org.powermock.reflect.Whitebox;
+
+/**
+ * Superclass for various operator tests.
+ */
+public abstract class BasicAppcOperation extends BasicBidirectionalTopicOperation {
+    protected static final String MY_DESCRIPTION = "my-description";
+    protected static final String MY_VNF = "my-vnf";
+    protected static final String KEY1 = "my-key-A";
+    protected static final String KEY2 = "my-key-B";
+    protected static final String VALUE1 = "{\"input\":\"hello\"}";
+    protected static final String VALUE2 = "{\"output\":\"world\"}";
+    protected static final String RESOURCE_ID = "my-resource";
+
+    protected Response response;
+
+    /**
+     * Constructs the object using a default actor and operation name.
+     */
+    public BasicAppcOperation() {
+        super();
+    }
+
+    /**
+     * Constructs the object.
+     *
+     * @param actor actor name
+     * @param operation operation name
+     */
+    public BasicAppcOperation(String actor, String operation) {
+        super(actor, operation);
+    }
+
+    /**
+     * Initializes mocks and sets up.
+     */
+    public void setUp() throws Exception {
+        super.setUp();
+
+        response = new Response();
+
+        ResponseStatus status = new ResponseStatus();
+        response.setStatus(status);
+        status.setCode(ResponseCode.SUCCESS.getValue());
+        status.setDescription(MY_DESCRIPTION);
+    }
+
+    /**
+     * Runs the operation and verifies that the response is successful.
+     *
+     * @param operation operation to run
+     */
+    protected void verifyOperation(AppcOperation operation)
+                    throws InterruptedException, ExecutionException, TimeoutException {
+
+        CompletableFuture<OperationOutcome> future2 = operation.start();
+        executor.runAll(100);
+        assertFalse(future2.isDone());
+
+        verify(forwarder).register(any(), listenerCaptor.capture());
+        provideResponse(listenerCaptor.getValue(), ResponseCode.SUCCESS.getValue(), MY_DESCRIPTION);
+
+        executor.runAll(100);
+        assertTrue(future2.isDone());
+
+        outcome = future2.get();
+        assertEquals(PolicyResult.SUCCESS, outcome.getResult());
+        assertEquals(MY_DESCRIPTION, outcome.getMessage());
+    }
+
+    /**
+     * Pretty-prints a request and verifies that the result matches the expected JSON.
+     *
+     * @param <T> request type
+     * @param expectedJsonFile name of the file containing the expected JSON
+     * @param request request to verify
+     * @throws CoderException if the request cannot be pretty-printed
+     */
+    protected <T> void verifyRequest(String expectedJsonFile, T request) throws CoderException {
+        String json = new StandardCoder().encode(request, true);
+        String expected = ResourceUtils.getResourceAsString(expectedJsonFile);
+
+        // strip request id, because it changes each time
+        final String stripper = "svc-request-id[^,]*";
+        json = json.replaceFirst(stripper, "").trim();
+        expected = expected.replaceFirst(stripper, "").trim();
+
+        assertEquals(expected, json);
+    }
+
+    /**
+     * Verifies that an exception is thrown if a field is missing from the enrichment
+     * data.
+     *
+     * @param fieldName name of the field to be removed from the enrichment data
+     * @param expectedText text expected in the exception message
+     */
+    protected void verifyMissing(String fieldName, String expectedText,
+                    BiFunction<ControlLoopOperationParams, BidirectionalTopicOperator, AppcOperation> maker) {
+
+        makeContext();
+        enrichment.remove(fieldName);
+
+        AppcOperation oper = maker.apply(params, operator);
+
+        assertThatIllegalArgumentException().isThrownBy(() -> Whitebox.invokeMethod(oper, "makeRequest", 1))
+                        .withMessageContaining("missing").withMessageContaining(expectedText);
+    }
+
+    @Override
+    protected void makeContext() {
+        super.makeContext();
+
+        Target target = new Target();
+        target.setResourceID(RESOURCE_ID);
+
+        params = params.toBuilder().target(target).build();
+    }
+
+    /**
+     * Provides a response to the listener.
+     *
+     * @param listener listener to which to provide the response
+     * @param code response code
+     * @param description response description
+     */
+    protected void provideResponse(BiConsumer<String, StandardCoderObject> listener, int code, String description) {
+        Response response = new Response();
+
+        ResponseStatus status = new ResponseStatus();
+        response.setStatus(status);
+        status.setCode(code);
+        status.setDescription(description);
+
+        provideResponse(listener, Util.translate("", response, String.class));
+    }
+
+    @Override
+    protected Map<String, String> makePayload() {
+        return Map.of(KEY1, VALUE1, KEY2, VALUE2);
+    }
+}
diff --git a/models-interactions/model-actors/actor.appc/src/test/java/org/onap/policy/controlloop/actor/appc/ModifyConfigOperationTest.java b/models-interactions/model-actors/actor.appc/src/test/java/org/onap/policy/controlloop/actor/appc/ModifyConfigOperationTest.java
new file mode 100644
index 000000000..f7c88f67c
--- /dev/null
+++ b/models-interactions/model-actors/actor.appc/src/test/java/org/onap/policy/controlloop/actor/appc/ModifyConfigOperationTest.java
@@ -0,0 +1,105 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020 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.controlloop.actor.appc;
+
+import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertSame;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import java.util.Arrays;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.atomic.AtomicBoolean;
+import org.junit.Before;
+import org.junit.Test;
+import org.onap.aai.domain.yang.GenericVnf;
+import org.onap.policy.aai.AaiCqResponse;
+import org.onap.policy.appc.Request;
+import org.onap.policy.controlloop.actorserviceprovider.OperationOutcome;
+import org.onap.policy.controlloop.actorserviceprovider.controlloop.ControlLoopEventContext;
+
+public class ModifyConfigOperationTest extends BasicAppcOperation {
+
+    private ModifyConfigOperation oper;
+
+    public ModifyConfigOperationTest() {
+        super(DEFAULT_ACTOR, ModifyConfigOperation.NAME);
+    }
+
+    @Before
+    public void setUp() throws Exception {
+        super.setUp();
+        oper = new ModifyConfigOperation(params, operator);
+    }
+
+    @Test
+    public void testModifyConfigOperation() {
+        assertEquals(DEFAULT_ACTOR, oper.getActorName());
+        assertEquals(ModifyConfigOperation.NAME, oper.getName());
+    }
+
+    @Test
+    public void testStartPreprocessorAsync() {
+        CompletableFuture<OperationOutcome> future = new CompletableFuture<>();
+        context = mock(ControlLoopEventContext.class);
+        when(context.obtain(eq(AaiCqResponse.CONTEXT_KEY), any())).thenReturn(future);
+        params = params.toBuilder().context(context).build();
+
+        AtomicBoolean guardStarted = new AtomicBoolean();
+
+        oper = new ModifyConfigOperation(params, operator) {
+            @Override
+            protected CompletableFuture<OperationOutcome> startGuardAsync() {
+                guardStarted.set(true);
+                return super.startGuardAsync();
+            }
+        };
+
+        assertSame(future, oper.startPreprocessorAsync());
+        assertFalse(future.isDone());
+        assertTrue(guardStarted.get());
+    }
+
+    @Test
+    public void testMakeRequest() {
+        AaiCqResponse cq = new AaiCqResponse("{}");
+
+        // missing vnf-id
+        params.getContext().setProperty(AaiCqResponse.CONTEXT_KEY, cq);
+        assertThatIllegalArgumentException().isThrownBy(() -> oper.makeRequest(1));
+
+        // populate the CQ data with a vnf-id
+        GenericVnf genvnf = new GenericVnf();
+        genvnf.setVnfId(MY_VNF);
+        genvnf.setModelInvariantId(RESOURCE_ID);
+        cq.setInventoryResponseItems(Arrays.asList(genvnf));
+
+        Request request = oper.makeRequest(2);
+        assertNotNull(request);
+        assertEquals(MY_VNF, request.getPayload().get(ModifyConfigOperation.VNF_ID_KEY));
+    }
+}