Added Xacml actor

Cloned the guard actor to use as a starting point for creating a more
generic actor for interacting with the xacml-pdp.
Also renamed various classes.

Issue-ID: POLICY-3501
Change-Id: I9bd0107845de41a349d56259e6cfa6a3180efa25
Signed-off-by: Jim Hahn <jrh3@att.com>

23 files changed, 1335 insertions, 21 deletions

diff --git a/models-interactions/model-actors/actor.guard/src/test/java/org/onap/policy/controlloop/actor/guard/DecisionOperationTest.java b/models-interactions/model-actors/actor.guard/src/test/java/org/onap/policy/controlloop/actor/guard/DecisionOperationTest.java
index 5502ec6aa..9b13fa558 100644
--- a/models-interactions/model-actors/actor.guard/src/test/java/org/onap/policy/controlloop/actor/guard/DecisionOperationTest.java
+++ b/models-interactions/model-actors/actor.guard/src/test/java/org/onap/policy/controlloop/actor/guard/DecisionOperationTest.java
@@ -2,7 +2,7 @@
  * ============LICENSE_START=======================================================
  * ONAP
  * ================================================================================
- * Copyright (C) 2020 AT&T Intellectual Property. All rights reserved.
+ * Copyright (C) 2020-2021 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.
@@ -53,7 +53,7 @@ import org.onap.policy.controlloop.actorserviceprovider.OperationResult;
 import org.onap.policy.controlloop.actorserviceprovider.Util;
 import org.onap.policy.models.decisions.concepts.DecisionRequest;
 import org.onap.policy.models.decisions.concepts.DecisionResponse;
-import org.onap.policy.simulators.GuardSimulatorJaxRs;
+import org.onap.policy.simulators.XacmlSimulatorJaxRs;
 
 public class DecisionOperationTest extends BasicHttpOperation {
 
@@ -73,7 +73,7 @@ public class DecisionOperationTest extends BasicHttpOperation {
         org.onap.policy.simulators.Util.buildGuardSim();
 
         BusTopicParams clientParams = BusTopicParams.builder().clientName(MY_CLIENT).basePath("policy/pdpx/v1/")
-                        .hostname("localhost").managed(true).port(org.onap.policy.simulators.Util.GUARDSIM_SERVER_PORT)
+                        .hostname("localhost").managed(true).port(org.onap.policy.simulators.Util.XACMLSIM_SERVER_PORT)
                         .build();
         HttpClientFactoryInstance.getClientFactory().build(clientParams);
     }
@@ -134,7 +134,7 @@ public class DecisionOperationTest extends BasicHttpOperation {
         config = new GuardConfig(blockingExecutor, opParams, HttpClientFactoryInstance.getClientFactory());
 
         params = params.toBuilder().retry(0).timeoutSec(5).executor(blockingExecutor)
-                        .payload(Map.of("clname", GuardSimulatorJaxRs.DENY_CLNAME)).build();
+                        .payload(Map.of("clname", XacmlSimulatorJaxRs.DENY_CLNAME)).build();
         oper = new DecisionOperation(params, config);
 
         outcome = oper.start().get();
diff --git a/models-interactions/model-actors/actor.xacml/pom.xml b/models-interactions/model-actors/actor.xacml/pom.xml
new file mode 100644
index 000000000..76e529eb8
--- /dev/null
+++ b/models-interactions/model-actors/actor.xacml/pom.xml
@@ -0,0 +1,83 @@
+<?xml version="1.0"?>
+<!--
+  ============LICENSE_START=======================================================
+  ONAP
+  ================================================================================
+  Copyright (C) 2020-2021 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=========================================================
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>org.onap.policy.models.policy-models-interactions.model-actors</groupId>
+        <artifactId>model-actors</artifactId>
+        <version>2.5.0-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>actor.xacml</artifactId>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.onap.policy.models.policy-models-interactions.model-actors</groupId>
+            <artifactId>actorServiceProvider</artifactId>
+            <version>${project.version}</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.onap.policy.models.policy-models-interactions.model-impl</groupId>
+            <artifactId>aai</artifactId>
+            <version>${project.version}</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.onap.policy.models</groupId>
+            <artifactId>policy-models-decisions</artifactId>
+            <version>${project.version}</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.onap.policy.common</groupId>
+            <artifactId>policy-endpoints</artifactId>
+            <version>${policy.common.version}</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.onap.policy.models.policy-models-interactions.model-actors</groupId>
+            <artifactId>actor.test</artifactId>
+            <version>${project.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.onap.policy.models.policy-models-interactions</groupId>
+            <artifactId>simulators</artifactId>
+            <version>${project.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.powermock</groupId>
+            <artifactId>powermock-api-mockito2</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+</project>
diff --git a/models-interactions/model-actors/actor.xacml/src/main/java/org/onap/policy/controlloop/actor/xacml/DecisionConfig.java b/models-interactions/model-actors/actor.xacml/src/main/java/org/onap/policy/controlloop/actor/xacml/DecisionConfig.java
new file mode 100644
index 000000000..1fe16fa13
--- /dev/null
+++ b/models-interactions/model-actors/actor.xacml/src/main/java/org/onap/policy/controlloop/actor/xacml/DecisionConfig.java
@@ -0,0 +1,68 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020-2021 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.xacml;
+
+import java.util.concurrent.Executor;
+import lombok.Getter;
+import org.onap.policy.common.endpoints.http.client.HttpClient;
+import org.onap.policy.common.endpoints.http.client.HttpClientFactory;
+import org.onap.policy.controlloop.actorserviceprovider.parameters.HttpConfig;
+import org.onap.policy.models.decisions.concepts.DecisionRequest;
+
+/**
+ * Configuration for Decision Operators.
+ */
+public class DecisionConfig extends HttpConfig {
+    private final DecisionRequest defaultRequest = new DecisionRequest();
+
+    /**
+     * {@code True} if the associated decision operation is disabled.
+     */
+    @Getter
+    private boolean disabled;
+
+    /**
+     * Constructs the object.
+     *
+     * @param blockingExecutor executor to be used for tasks that may perform blocking I/O
+     * @param params operator parameters
+     * @param clientFactory factory from which to obtain the {@link HttpClient}
+     */
+    public DecisionConfig(Executor blockingExecutor, DecisionParams params, HttpClientFactory clientFactory) {
+        super(blockingExecutor, params, clientFactory);
+
+        defaultRequest.setOnapComponent(params.getOnapComponent());
+        defaultRequest.setOnapInstance(params.getOnapInstance());
+        defaultRequest.setOnapName(params.getOnapName());
+        defaultRequest.setAction(params.getAction());
+
+        this.disabled = params.isDisabled();
+    }
+
+    /**
+     * Creates a new request, with the default values.
+     *
+     * @return a new request
+     */
+    public DecisionRequest makeRequest() {
+        return new DecisionRequest(defaultRequest);
+    }
+}
diff --git a/models-interactions/model-actors/actor.xacml/src/main/java/org/onap/policy/controlloop/actor/xacml/DecisionOperator.java b/models-interactions/model-actors/actor.xacml/src/main/java/org/onap/policy/controlloop/actor/xacml/DecisionOperator.java
new file mode 100644
index 000000000..f385764d5
--- /dev/null
+++ b/models-interactions/model-actors/actor.xacml/src/main/java/org/onap/policy/controlloop/actor/xacml/DecisionOperator.java
@@ -0,0 +1,52 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020-2021 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.xacml;
+
+import java.util.Map;
+import org.onap.policy.common.parameters.ValidationResult;
+import org.onap.policy.controlloop.actorserviceprovider.Util;
+import org.onap.policy.controlloop.actorserviceprovider.impl.HttpOperation;
+import org.onap.policy.controlloop.actorserviceprovider.impl.HttpOperator;
+import org.onap.policy.controlloop.actorserviceprovider.impl.OperationMaker;
+import org.onap.policy.controlloop.actorserviceprovider.parameters.HttpConfig;
+import org.onap.policy.controlloop.actorserviceprovider.parameters.ParameterValidationRuntimeException;
+
+/**
+ * Decision Operator.
+ */
+public class DecisionOperator extends HttpOperator {
+
+    public DecisionOperator(String actorName, String name,
+                    OperationMaker<HttpConfig, HttpOperation<?>> operationMaker) {
+        super(actorName, name, operationMaker);
+    }
+
+    @Override
+    protected HttpConfig makeConfiguration(Map<String, Object> parameters) {
+        DecisionParams params = Util.translate(getFullName(), parameters, DecisionParams.class);
+        ValidationResult result = params.validate(getFullName());
+        if (!result.isValid()) {
+            throw new ParameterValidationRuntimeException("invalid parameters", result);
+        }
+
+        return new DecisionConfig(getBlockingExecutor(), params, getClientFactory());
+    }
+}
diff --git a/models-interactions/model-actors/actor.xacml/src/main/java/org/onap/policy/controlloop/actor/xacml/DecisionParams.java b/models-interactions/model-actors/actor.xacml/src/main/java/org/onap/policy/controlloop/actor/xacml/DecisionParams.java
new file mode 100644
index 000000000..c154497f1
--- /dev/null
+++ b/models-interactions/model-actors/actor.xacml/src/main/java/org/onap/policy/controlloop/actor/xacml/DecisionParams.java
@@ -0,0 +1,48 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020-2021 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.xacml;
+
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+import lombok.experimental.SuperBuilder;
+import org.onap.policy.common.parameters.annotations.NotBlank;
+import org.onap.policy.common.parameters.annotations.NotNull;
+import org.onap.policy.controlloop.actorserviceprovider.parameters.HttpParams;
+
+/**
+ * Decision parameters.
+ */
+@NotBlank
+@NotNull
+@Data
+@EqualsAndHashCode(callSuper = true)
+@SuperBuilder(toBuilder = true)
+public class DecisionParams extends HttpParams {
+    private String onapName;
+    private String onapComponent;
+    private String onapInstance;
+    private String action;
+
+    /**
+     * {@code True} if the associated decision operation is disabled.
+     */
+    private boolean disabled;
+}
diff --git a/models-interactions/model-actors/actor.xacml/src/main/java/org/onap/policy/controlloop/actor/xacml/GuardOperation.java b/models-interactions/model-actors/actor.xacml/src/main/java/org/onap/policy/controlloop/actor/xacml/GuardOperation.java
new file mode 100644
index 000000000..6da970968
--- /dev/null
+++ b/models-interactions/model-actors/actor.xacml/src/main/java/org/onap/policy/controlloop/actor/xacml/GuardOperation.java
@@ -0,0 +1,167 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020-2021 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.xacml;
+
+import java.util.Collections;
+import java.util.Map;
+import java.util.concurrent.CompletableFuture;
+import javax.ws.rs.client.Entity;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import org.onap.policy.common.endpoints.event.comm.Topic.CommInfrastructure;
+import org.onap.policy.common.endpoints.utils.NetLoggerUtil.EventType;
+import org.onap.policy.controlloop.actorserviceprovider.CallbackManager;
+import org.onap.policy.controlloop.actorserviceprovider.OperationOutcome;
+import org.onap.policy.controlloop.actorserviceprovider.OperationResult;
+import org.onap.policy.controlloop.actorserviceprovider.impl.HttpOperation;
+import org.onap.policy.controlloop.actorserviceprovider.parameters.ControlLoopOperationParams;
+import org.onap.policy.controlloop.actorserviceprovider.parameters.HttpConfig;
+import org.onap.policy.models.decisions.concepts.DecisionRequest;
+import org.onap.policy.models.decisions.concepts.DecisionResponse;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Guard Operation. The outcome message is set to the guard response. If the guard is
+ * permitted or indeterminate, then the outcome is set to SUCCESS.
+ * <p/>
+ * The input to the request is taken from the payload, where properties are mapped to the
+ * field names in the {@link DecisionRequest} object. Properties whose names begin with
+ * "resource." are placed into the "resource" field of the {@link DecisionRequest}. The
+ * following will be provided, if not specified in the payload:
+ * <dl>
+ * <dt>action</dt>
+ * <dd>"guard"</dd>
+ * <dt>request ID</dt>
+ * <dd>generated</dd>
+ * </dl>
+ */
+public class GuardOperation extends HttpOperation<DecisionResponse> {
+    private static final Logger logger = LoggerFactory.getLogger(GuardOperation.class);
+
+    // operation name
+    public static final String NAME = "Guard";
+
+    public static final String PERMIT = "Permit";
+    public static final String DENY = "Deny";
+    public static final String INDETERMINATE = "Indeterminate";
+
+    /**
+     * Prefix for properties in the payload that should be copied to the "resource" field
+     * of the request.
+     */
+    public static final String RESOURCE_PREFIX = "resource.";
+
+    private final DecisionConfig config;
+
+
+    /**
+     * Constructs the object.
+     *
+     * @param params operation parameters
+     * @param config configuration for this operation
+     */
+    public GuardOperation(ControlLoopOperationParams params, HttpConfig config) {
+        super(params, config, DecisionResponse.class, Collections.emptyList());
+        this.config = (DecisionConfig) config;
+    }
+
+    @Override
+    public CompletableFuture<OperationOutcome> start() {
+        if (!config.isDisabled()) {
+            // enabled - do full guard operation
+            return super.start();
+        }
+
+        // guard is disabled, thus it is always treated as a success
+        logger.info("{}: guard disabled, always succeeds for {}", getFullName(), params.getRequestId());
+
+        final var executor = params.getExecutor();
+        final var callbacks = new CallbackManager();
+
+        return CompletableFuture.completedFuture(makeOutcome())
+                        .whenCompleteAsync(callbackStarted(callbacks), executor)
+                        .whenCompleteAsync(callbackCompleted(callbacks), executor);
+    }
+
+    @Override
+    protected CompletableFuture<OperationOutcome> startOperationAsync(int attempt, OperationOutcome outcome) {
+        DecisionRequest request = makeRequest();
+
+        Map<String, Object> headers = makeHeaders();
+
+        headers.put("Accept", MediaType.APPLICATION_JSON);
+        String url = getUrl();
+
+        String strRequest = prettyPrint(request);
+        logMessage(EventType.OUT, CommInfrastructure.REST, url, strRequest);
+
+        Entity<String> entity = Entity.entity(strRequest, MediaType.APPLICATION_JSON);
+
+        // @formatter:off
+        return handleResponse(outcome, url,
+            callback -> getClient().post(callback, getPath(), entity, headers));
+        // @formatter:on
+    }
+
+    /**
+     * Makes a request from the payload.
+     *
+     * @return a new request
+     */
+    protected DecisionRequest makeRequest() {
+        if (params.getPayload() == null) {
+            throw new IllegalArgumentException("missing payload");
+        }
+
+        DecisionRequest req = config.makeRequest();
+        req.setRequestId(getSubRequestId());
+        req.setResource(Map.of("guard", params.getPayload()));
+
+        return req;
+    }
+
+    @Override
+    protected CompletableFuture<OperationOutcome> postProcessResponse(OperationOutcome outcome, String url,
+                    Response rawResponse, DecisionResponse response) {
+
+        outcome.setResponse(response);
+
+        // determine the result
+        String status = response.getStatus();
+        if (status == null) {
+            outcome.setResult(OperationResult.FAILURE);
+            outcome.setMessage("response contains no status");
+            return CompletableFuture.completedFuture(outcome);
+        }
+
+        if (PERMIT.equalsIgnoreCase(status) || INDETERMINATE.equalsIgnoreCase(status)) {
+            outcome.setResult(OperationResult.SUCCESS);
+        } else {
+            outcome.setResult(OperationResult.FAILURE);
+        }
+
+        // set the message
+        outcome.setMessage(response.getStatus());
+
+        return CompletableFuture.completedFuture(outcome);
+    }
+}
diff --git a/models-interactions/model-actors/actor.xacml/src/main/java/org/onap/policy/controlloop/actor/xacml/XacmlActor.java b/models-interactions/model-actors/actor.xacml/src/main/java/org/onap/policy/controlloop/actor/xacml/XacmlActor.java
new file mode 100644
index 000000000..ab7452266
--- /dev/null
+++ b/models-interactions/model-actors/actor.xacml/src/main/java/org/onap/policy/controlloop/actor/xacml/XacmlActor.java
@@ -0,0 +1,39 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2018-2019 Huawei Intellectual Property. All rights reserved.
+ * Modifications Copyright (C) 2019 Nordix Foundation.
+ * Modifications Copyright (C) 2019-2021 AT&T Intellectual Property.
+ * ================================================================================
+ * 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.xacml;
+
+import org.onap.policy.controlloop.actorserviceprovider.impl.HttpActor;
+
+public class XacmlActor extends HttpActor<XacmlActorParams> {
+    // actor name
+    public static final String NAME = "XACML";
+
+    /**
+     * Constructs the object.
+     */
+    public XacmlActor() {
+        super(NAME, XacmlActorParams.class);
+
+        addOperator(new DecisionOperator(NAME, GuardOperation.NAME, GuardOperation::new));
+    }
+}
diff --git a/models-interactions/model-actors/actor.xacml/src/main/java/org/onap/policy/controlloop/actor/xacml/XacmlActorParams.java b/models-interactions/model-actors/actor.xacml/src/main/java/org/onap/policy/controlloop/actor/xacml/XacmlActorParams.java
new file mode 100644
index 000000000..e668fa3db
--- /dev/null
+++ b/models-interactions/model-actors/actor.xacml/src/main/java/org/onap/policy/controlloop/actor/xacml/XacmlActorParams.java
@@ -0,0 +1,48 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020-2021 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.xacml;
+
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
+import lombok.Setter;
+import org.onap.policy.controlloop.actorserviceprovider.parameters.HttpActorParams;
+
+@Getter
+@Setter
+@EqualsAndHashCode(callSuper = true)
+public class XacmlActorParams extends HttpActorParams {
+    public static final String DEFAULT_ACTION = "guard";
+
+    /*
+     * Optional, default values that are used if missing from the operation-specific
+     * parameters.
+     */
+
+    private String onapName;
+    private String onapComponent;
+    private String onapInstance;
+    private String action = DEFAULT_ACTION;
+
+    /**
+     * {@code True} if xacml operations are disabled.
+     */
+    private boolean disabled = false;
+}
diff --git a/models-interactions/model-actors/actor.xacml/src/main/resources/META-INF/services/org.onap.policy.controlloop.actorserviceprovider.spi.Actor b/models-interactions/model-actors/actor.xacml/src/main/resources/META-INF/services/org.onap.policy.controlloop.actorserviceprovider.spi.Actor
new file mode 100644
index 000000000..497f785f4
--- /dev/null
+++ b/models-interactions/model-actors/actor.xacml/src/main/resources/META-INF/services/org.onap.policy.controlloop.actorserviceprovider.spi.Actor
@@ -0,0 +1 @@
+org.onap.policy.controlloop.actor.xacml.XacmlActor
diff --git a/models-interactions/model-actors/actor.xacml/src/test/java/org/onap/policy/controlloop/actor/xacml/DecisionActorParamsTest.java b/models-interactions/model-actors/actor.xacml/src/test/java/org/onap/policy/controlloop/actor/xacml/DecisionActorParamsTest.java
new file mode 100644
index 000000000..0b0495620
--- /dev/null
+++ b/models-interactions/model-actors/actor.xacml/src/test/java/org/onap/policy/controlloop/actor/xacml/DecisionActorParamsTest.java
@@ -0,0 +1,117 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020-2021 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.xacml;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import java.util.Map;
+import java.util.TreeMap;
+import java.util.function.Consumer;
+import org.junit.Before;
+import org.junit.Test;
+import org.onap.policy.common.parameters.ValidationResult;
+import org.onap.policy.controlloop.actor.xacml.XacmlActorParams;
+import org.onap.policy.controlloop.actorserviceprovider.Util;
+import org.onap.policy.controlloop.actorserviceprovider.parameters.ActorParams;
+
+public class DecisionActorParamsTest {
+    private static final String CONTAINER = "my-container";
+    private static final String CLIENT = "my-client";
+    private static final int TIMEOUT = 10;
+    private static final String ONAP_NAME = "onap-nap";
+    private static final String ONAP_COMP = "onap-component";
+    private static final String ONAP_INST = "onap-instance";
+    private static final String MY_ACTION = "my-action";
+
+    private static final String PATH1 = "path #1";
+    private static final String PATH2 = "path #2";
+    private static final String URI1 = "uri #1";
+    private static final String URI2 = "uri #2";
+
+    private Map<String, Map<String, Object>> operations;
+    private XacmlActorParams params;
+
+    /**
+     * Initializes {@link #operations} with two items and {@link params} with a fully
+     * populated object.
+     */
+    @Before
+    public void setUp() {
+        operations = new TreeMap<>();
+        operations.put(PATH1, Map.of("path", URI1));
+        operations.put(PATH2, Map.of("path", URI2));
+
+        params = makeXacmlActorParams();
+    }
+
+    @Test
+    public void testIsDisabled() {
+        // disabled by default
+        assertFalse(params.isDisabled());
+    }
+
+    @Test
+    public void testValidate() {
+        assertTrue(params.validate(CONTAINER).isValid());
+
+        // only a few fields are required
+        XacmlActorParams sparse = Util.translate(CONTAINER, Map.of(ActorParams.OPERATIONS_FIELD, operations),
+                        XacmlActorParams.class);
+        assertTrue(sparse.validate(CONTAINER).isValid());
+
+        assertEquals(XacmlActorParams.DEFAULT_ACTION, sparse.getAction());
+
+        // check fields from superclass
+        testValidateField(ActorParams.OPERATIONS_FIELD, "null", params2 -> params2.setOperations(null));
+        testValidateField("timeoutSec", "minimum", params2 -> params2.setTimeoutSec(-1));
+    }
+
+    private void testValidateField(String fieldName, String expected, Consumer<XacmlActorParams> makeInvalid) {
+
+        // original params should be valid
+        ValidationResult result = params.validate(CONTAINER);
+        assertTrue(fieldName, result.isValid());
+
+        // make invalid params
+        XacmlActorParams params2 = makeXacmlActorParams();
+        makeInvalid.accept(params2);
+        result = params2.validate(CONTAINER);
+        assertFalse(fieldName, result.isValid());
+        assertThat(result.getResult()).contains(CONTAINER).contains(fieldName).contains(expected);
+    }
+
+    private XacmlActorParams makeXacmlActorParams() {
+        XacmlActorParams params2 = new XacmlActorParams();
+        params2.setClientName(CLIENT);
+        params2.setTimeoutSec(TIMEOUT);
+        params2.setOperations(operations);
+
+        params2.setOnapName(ONAP_NAME);
+        params2.setOnapComponent(ONAP_COMP);
+        params2.setOnapInstance(ONAP_INST);
+        params2.setAction(MY_ACTION);
+
+        return params2;
+    }
+}
diff --git a/models-interactions/model-actors/actor.xacml/src/test/java/org/onap/policy/controlloop/actor/xacml/DecisionActorTest.java b/models-interactions/model-actors/actor.xacml/src/test/java/org/onap/policy/controlloop/actor/xacml/DecisionActorTest.java
new file mode 100644
index 000000000..47c294c24
--- /dev/null
+++ b/models-interactions/model-actors/actor.xacml/src/test/java/org/onap/policy/controlloop/actor/xacml/DecisionActorTest.java
@@ -0,0 +1,48 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020-2021 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.xacml;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import java.util.Arrays;
+import java.util.stream.Collectors;
+import org.junit.Test;
+import org.onap.policy.controlloop.actor.test.BasicActor;
+
+public class DecisionActorTest extends BasicActor {
+
+    @Test
+    public void test() {
+        final XacmlActor prov = new XacmlActor();
+
+        // verify that it has the operators we expect
+        var expected = Arrays.asList(GuardOperation.NAME).stream().sorted().collect(Collectors.toList());
+        var actual = prov.getOperationNames().stream().sorted().collect(Collectors.toList());
+
+        assertEquals(expected.toString(), actual.toString());
+
+        // verify that it all plugs into the ActorService
+        verifyActorService(XacmlActor.NAME, "service.yaml");
+
+        assertTrue(prov.getOperator(GuardOperation.NAME) instanceof DecisionOperator);
+    }
+}
diff --git a/models-interactions/model-actors/actor.xacml/src/test/java/org/onap/policy/controlloop/actor/xacml/DecisionConfigTest.java b/models-interactions/model-actors/actor.xacml/src/test/java/org/onap/policy/controlloop/actor/xacml/DecisionConfigTest.java
new file mode 100644
index 000000000..e03e1029d
--- /dev/null
+++ b/models-interactions/model-actors/actor.xacml/src/test/java/org/onap/policy/controlloop/actor/xacml/DecisionConfigTest.java
@@ -0,0 +1,101 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020-2021 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.xacml;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertSame;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.when;
+
+import java.util.concurrent.Executor;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+import org.onap.policy.common.endpoints.http.client.HttpClient;
+import org.onap.policy.common.endpoints.http.client.HttpClientFactory;
+import org.onap.policy.controlloop.actor.xacml.DecisionConfig;
+import org.onap.policy.controlloop.actor.xacml.DecisionParams;
+import org.onap.policy.models.decisions.concepts.DecisionRequest;
+
+@RunWith(MockitoJUnitRunner.class)
+public class DecisionConfigTest {
+    private static final String MY_CLIENT = "my-client";
+    private static final String PATH = "my-path";
+    private static final int TIMEOUT = 10;
+    private static final String ONAP_NAME = "onap-nap";
+    private static final String ONAP_COMP = "onap-component";
+    private static final String ONAP_INST = "onap-instance";
+    private static final String MY_ACTION = "my-action";
+
+    @Mock
+    private HttpClient client;
+    @Mock
+    private HttpClientFactory factory;
+    @Mock
+    private Executor executor;
+
+    private DecisionParams params;
+    private DecisionConfig config;
+
+    /**
+     * Sets up.
+     */
+    @Before
+    public void setUp() {
+        when(factory.get(MY_CLIENT)).thenReturn(client);
+
+        params = DecisionParams.builder().onapName(ONAP_NAME).onapComponent(ONAP_COMP).onapInstance(ONAP_INST)
+                        .action(MY_ACTION).clientName(MY_CLIENT).path(PATH).timeoutSec(TIMEOUT).build();
+        config = new DecisionConfig(executor, params, factory);
+    }
+
+    @Test
+    public void test() {
+        DecisionRequest expected = new DecisionRequest();
+        expected.setOnapComponent(ONAP_COMP);
+        expected.setOnapInstance(ONAP_INST);
+        expected.setOnapName(ONAP_NAME);
+        expected.setAction(MY_ACTION);
+
+        DecisionRequest actual = config.makeRequest();
+        assertEquals(expected, actual);
+
+        // check value from superclass
+        assertSame(executor, config.getBlockingExecutor());
+        assertSame(client, config.getClient());
+
+        // repeat, with minimal parameters
+        params = DecisionParams.builder().clientName(MY_CLIENT).path(PATH).timeoutSec(TIMEOUT).build();
+        config = new DecisionConfig(executor, params, factory);
+        assertFalse(config.isDisabled());
+
+        actual = config.makeRequest();
+        assertEquals(new DecisionRequest(), actual);
+
+        // try with disabled=true
+        params = params.toBuilder().disabled(true).build();
+        config = new DecisionConfig(executor, params, factory);
+        assertTrue(config.isDisabled());
+    }
+}
diff --git a/models-interactions/model-actors/actor.xacml/src/test/java/org/onap/policy/controlloop/actor/xacml/DecisionOperatorTest.java b/models-interactions/model-actors/actor.xacml/src/test/java/org/onap/policy/controlloop/actor/xacml/DecisionOperatorTest.java
new file mode 100644
index 000000000..ab8535ae4
--- /dev/null
+++ b/models-interactions/model-actors/actor.xacml/src/test/java/org/onap/policy/controlloop/actor/xacml/DecisionOperatorTest.java
@@ -0,0 +1,106 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020-2021 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.xacml;
+
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.when;
+
+import java.util.Map;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+import org.onap.policy.common.endpoints.http.client.HttpClient;
+import org.onap.policy.common.endpoints.http.client.HttpClientFactory;
+import org.onap.policy.controlloop.actorserviceprovider.Util;
+import org.onap.policy.controlloop.actorserviceprovider.parameters.ParameterValidationRuntimeException;
+
+@RunWith(MockitoJUnitRunner.class)
+public class DecisionOperatorTest {
+    private static final String ACTOR = "my-actor";
+    private static final String OPERATION = "my-name";
+    private static final String CLIENT = "my-client";
+    private static final String PATH = "my-path";
+    private static final int TIMEOUT = 10;
+    private static final String ONAP_NAME = "onap-nap";
+    private static final String ONAP_COMP = "onap-component";
+    private static final String ONAP_INST = "onap-instance";
+    private static final String MY_ACTION = "my-action";
+
+    @Mock
+    private HttpClient client;
+
+    @Mock
+    private HttpClientFactory factory;
+
+
+    private DecisionOperator oper;
+
+    /**
+     * Initializes fields, including {@link #oper}, and resets the static fields used by
+     * the REST server.
+     */
+    @Before
+    public void setUp() {
+        when(factory.get(CLIENT)).thenReturn(client);
+
+        oper = new MyOperator();
+
+        DecisionParams params =
+                        DecisionParams.builder().onapName(ONAP_NAME).onapComponent(ONAP_COMP).onapInstance(ONAP_INST)
+                                        .action(MY_ACTION).clientName(CLIENT).path(PATH).timeoutSec(TIMEOUT).build();
+        Map<String, Object> paramMap = Util.translateToMap(OPERATION, params);
+        oper.configure(paramMap);
+
+        assertTrue(oper.makeConfiguration(paramMap) instanceof DecisionConfig);
+    }
+
+    @Test
+    public void testConstructor() {
+        assertEquals(ACTOR, oper.getActorName());
+        assertEquals(OPERATION, oper.getName());
+        assertEquals(ACTOR + "." + OPERATION, oper.getFullName());
+    }
+
+    @Test
+    public void testDoConfigure_testGetters() {
+        assertTrue(oper.getCurrentConfig() instanceof DecisionConfig);
+
+        // test invalid parameters
+        Map<String, Object> paramMap2 = Util.translateToMap(OPERATION, DecisionParams.builder().build());
+        assertThatThrownBy(() -> oper.configure(paramMap2)).isInstanceOf(ParameterValidationRuntimeException.class);
+    }
+
+
+    private class MyOperator extends DecisionOperator {
+        public MyOperator() {
+            super(ACTOR, OPERATION, null);
+        }
+
+        @Override
+        protected HttpClientFactory getClientFactory() {
+            return factory;
+        }
+    }
+}
diff --git a/models-interactions/model-actors/actor.xacml/src/test/java/org/onap/policy/controlloop/actor/xacml/DecisionParamsTest.java b/models-interactions/model-actors/actor.xacml/src/test/java/org/onap/policy/controlloop/actor/xacml/DecisionParamsTest.java
new file mode 100644
index 000000000..01c7d5899
--- /dev/null
+++ b/models-interactions/model-actors/actor.xacml/src/test/java/org/onap/policy/controlloop/actor/xacml/DecisionParamsTest.java
@@ -0,0 +1,97 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020-2021 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.xacml;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+import java.util.function.Function;
+import org.junit.Before;
+import org.junit.Test;
+import org.onap.policy.common.parameters.ValidationResult;
+import org.onap.policy.controlloop.actor.xacml.DecisionParams;
+import org.onap.policy.controlloop.actor.xacml.DecisionParams.DecisionParamsBuilder;
+import org.onap.policy.controlloop.actorserviceprovider.parameters.HttpParams.HttpParamsBuilder;
+
+public class DecisionParamsTest {
+    private static final String CONTAINER = "my-container";
+    private static final String CLIENT = "my-client";
+    private static final String PATH = "my-path";
+    private static final int TIMEOUT = 10;
+    private static final String ONAP_NAME = "onap-nap";
+    private static final String ONAP_COMP = "onap-component";
+    private static final String ONAP_INST = "onap-instance";
+    private static final String MY_ACTION = "my-action";
+
+    private DecisionParams params;
+
+    @Before
+    public void setUp() {
+        params = DecisionParams.builder().onapName(ONAP_NAME).onapComponent(ONAP_COMP).onapInstance(ONAP_INST)
+                        .action(MY_ACTION).clientName(CLIENT).path(PATH).timeoutSec(TIMEOUT).build();
+    }
+
+    @Test
+    public void testIsDisabled() {
+        // disabled by default
+        assertFalse(params.isDisabled());
+    }
+
+    @Test
+    public void testValidate() {
+        assertTrue(params.validate(CONTAINER).isValid());
+
+        testValidateField("onapName", "null", bldr -> bldr.onapName(null));
+        testValidateField("onapComponent", "null", bldr -> bldr.onapComponent(null));
+        testValidateField("onapInstance", "null", bldr -> bldr.onapInstance(null));
+        testValidateField("action", "null", bldr -> bldr.action(null));
+
+        // validate one of the superclass fields
+        testValidateField("clientName", "null", bldr -> bldr.clientName(null));
+    }
+
+    @Test
+    public void testBuilder_testToBuilder() {
+        assertEquals(CLIENT, params.getClientName());
+
+        assertEquals(ONAP_NAME, params.getOnapName());
+        assertEquals(ONAP_COMP, params.getOnapComponent());
+        assertEquals(ONAP_INST, params.getOnapInstance());
+        assertEquals(MY_ACTION, params.getAction());
+
+        assertEquals(params, params.toBuilder().build());
+    }
+
+    private void testValidateField(String fieldName, String expected,
+                    @SuppressWarnings("rawtypes") Function<DecisionParamsBuilder, HttpParamsBuilder> makeInvalid) {
+
+        // original params should be valid
+        ValidationResult result = params.validate(CONTAINER);
+        assertTrue(fieldName, result.isValid());
+
+        // make invalid params
+        result = makeInvalid.apply(params.toBuilder()).build().validate(CONTAINER);
+        assertFalse(fieldName, result.isValid());
+        assertThat(result.getResult()).contains(fieldName).contains(expected);
+    }
+}
diff --git a/models-interactions/model-actors/actor.xacml/src/test/java/org/onap/policy/controlloop/actor/xacml/GuardOperationTest.java b/models-interactions/model-actors/actor.xacml/src/test/java/org/onap/policy/controlloop/actor/xacml/GuardOperationTest.java
new file mode 100644
index 000000000..e69b62d2a
--- /dev/null
+++ b/models-interactions/model-actors/actor.xacml/src/test/java/org/onap/policy/controlloop/actor/xacml/GuardOperationTest.java
@@ -0,0 +1,270 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020-2021 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.xacml;
+
+import static org.assertj.core.api.Assertions.assertThat;
+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.assertNull;
+import static org.junit.Assert.assertSame;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import java.util.Map;
+import java.util.TreeMap;
+import java.util.concurrent.CompletableFuture;
+import java.util.function.Consumer;
+import org.junit.AfterClass;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.onap.policy.common.endpoints.event.comm.bus.internal.BusTopicParams;
+import org.onap.policy.common.endpoints.http.client.HttpClientFactoryInstance;
+import org.onap.policy.common.endpoints.http.server.HttpServletServerFactoryInstance;
+import org.onap.policy.common.utils.coder.CoderException;
+import org.onap.policy.controlloop.actor.test.BasicHttpOperation;
+import org.onap.policy.controlloop.actorserviceprovider.OperationOutcome;
+import org.onap.policy.controlloop.actorserviceprovider.OperationResult;
+import org.onap.policy.controlloop.actorserviceprovider.Util;
+import org.onap.policy.models.decisions.concepts.DecisionRequest;
+import org.onap.policy.models.decisions.concepts.DecisionResponse;
+import org.onap.policy.simulators.XacmlSimulatorJaxRs;
+
+public class GuardOperationTest extends BasicHttpOperation {
+
+    @Mock
+    private Consumer<OperationOutcome> started;
+    @Mock
+    private Consumer<OperationOutcome> completed;
+
+    private DecisionConfig guardConfig;
+    private GuardOperation oper;
+
+    /**
+     * Starts the simulator.
+     */
+    @BeforeClass
+    public static void setUpBeforeClass() throws Exception {
+        org.onap.policy.simulators.Util.buildXacmlSim();
+
+        BusTopicParams clientParams = BusTopicParams.builder().clientName(MY_CLIENT).basePath("policy/pdpx/v1/")
+                        .hostname("localhost").managed(true).port(org.onap.policy.simulators.Util.XACMLSIM_SERVER_PORT)
+                        .build();
+        HttpClientFactoryInstance.getClientFactory().build(clientParams);
+    }
+
+    @AfterClass
+    public static void tearDownAfterClass() {
+        HttpClientFactoryInstance.getClientFactory().destroy();
+        HttpServletServerFactoryInstance.getServerFactory().destroy();
+    }
+
+    /**
+     * Sets up.
+     */
+    @Before
+    public void setUp() throws Exception {
+        super.setUpBasic();
+
+        guardConfig = mock(DecisionConfig.class);
+        when(guardConfig.makeRequest()).thenAnswer(args -> {
+            DecisionRequest req = new DecisionRequest();
+            req.setAction("guard");
+            req.setOnapComponent("my-onap-component");
+            req.setOnapInstance("my-onap-instance");
+            req.setOnapName("my-onap-name");
+            return req;
+        });
+
+        config = guardConfig;
+        initConfig();
+
+        params = params.toBuilder().startCallback(started).completeCallback(completed).build();
+
+        oper = new GuardOperation(params, config);
+    }
+
+    /**
+     * Tests "success" case with simulator.
+     */
+    @Test
+    public void testSuccess() throws Exception {
+        DecisionParams opParams = DecisionParams.builder().clientName(MY_CLIENT).path("decision").build();
+        config = new DecisionConfig(blockingExecutor, opParams, HttpClientFactoryInstance.getClientFactory());
+
+        params = params.toBuilder().retry(0).timeoutSec(5).executor(blockingExecutor).build();
+        oper = new GuardOperation(params, config);
+
+        outcome = oper.start().get();
+        assertEquals(OperationResult.SUCCESS, outcome.getResult());
+        assertTrue(outcome.getResponse() instanceof DecisionResponse);
+    }
+
+    /**
+     * Tests "failure" case with simulator.
+     */
+    @Test
+    public void testFailure() throws Exception {
+        DecisionParams opParams = DecisionParams.builder().clientName(MY_CLIENT).path("decision").build();
+        config = new DecisionConfig(blockingExecutor, opParams, HttpClientFactoryInstance.getClientFactory());
+
+        params = params.toBuilder().retry(0).timeoutSec(5).executor(blockingExecutor)
+                        .payload(Map.of("clname", XacmlSimulatorJaxRs.DENY_CLNAME)).build();
+        oper = new GuardOperation(params, config);
+
+        outcome = oper.start().get();
+        assertEquals(OperationResult.FAILURE, outcome.getResult());
+        assertTrue(outcome.getResponse() instanceof DecisionResponse);
+    }
+
+    @Test
+    public void testConstructor() {
+        assertEquals(DEFAULT_ACTOR, oper.getActorName());
+        assertEquals(DEFAULT_OPERATION, oper.getName());
+    }
+
+    @Test
+    public void testGetPropertyNames() {
+        assertThat(oper.getPropertyNames()).isEmpty();
+    }
+
+    @Test
+    public void testStartOperationAsync() throws Exception {
+        CompletableFuture<OperationOutcome> future2 = oper.start();
+        executor.runAll(100);
+        assertFalse(future2.isDone());
+
+        DecisionResponse resp = new DecisionResponse();
+        resp.setStatus(GuardOperation.PERMIT);
+        when(rawResponse.readEntity(String.class)).thenReturn(Util.translate("", resp, String.class));
+
+        verify(client).post(callbackCaptor.capture(), any(), requestCaptor.capture(), any());
+        callbackCaptor.getValue().completed(rawResponse);
+
+        executor.runAll(100);
+        assertTrue(future2.isDone());
+
+        outcome = future2.get();
+        assertEquals(OperationResult.SUCCESS, outcome.getResult());
+        assertEquals(resp, outcome.getResponse());
+
+        assertNotNull(oper.getSubRequestId());
+        assertEquals(oper.getSubRequestId(), future2.get().getSubRequestId());
+    }
+
+    /**
+     * Tests startOperationAsync() when the guard is disabled.
+     */
+    @Test
+    public void testStartOperationAsyncDisabled() throws Exception {
+        // indicate that it's disabled
+        when(guardConfig.isDisabled()).thenReturn(true);
+
+        CompletableFuture<OperationOutcome> future2 = oper.start();
+        executor.runAll(100);
+
+        verify(client, never()).post(any(), any(), any(), any());
+
+        // should already be done
+        assertTrue(future2.isDone());
+
+        outcome = future2.get();
+        assertEquals(OperationResult.SUCCESS, outcome.getResult());
+        assertNull(outcome.getResponse());
+
+        // ensure callbacks were invoked
+        verify(started).accept(any());
+        verify(completed).accept(any());
+    }
+
+    @Test
+    public void testMakeRequest() throws CoderException {
+        oper.generateSubRequestId(2);
+
+        verifyPayload("makeReqStd.json", makePayload());
+        verifyPayload("makeReqDefault.json", new TreeMap<>());
+
+        // null payload - start with fresh parameters and operation
+        params = params.toBuilder().payload(null).build();
+        oper = new GuardOperation(params, config);
+        assertThatIllegalArgumentException().isThrownBy(() -> oper.makeRequest());
+    }
+
+    private void verifyPayload(String expectedJsonFile, Map<String, Object> payload) throws CoderException {
+        params.getPayload().clear();
+        params.getPayload().putAll(payload);
+
+        DecisionRequest request = oper.makeRequest();
+
+        assertEquals("guard", request.getAction());
+        assertEquals("my-onap-component", request.getOnapComponent());
+        assertEquals("my-onap-instance", request.getOnapInstance());
+        assertEquals("my-onap-name", request.getOnapName());
+        assertNotNull(request.getRequestId());
+        assertEquals(Map.of("guard", payload), request.getResource());
+
+        verifyRequest(expectedJsonFile, request, "requestId");
+    }
+
+    @Test
+    public void testPostProcessResponse() {
+        DecisionResponse response = new DecisionResponse();
+
+        // null status
+        response.setStatus(null);
+        verifyOutcome(response, OperationResult.FAILURE, "response contains no status");
+
+        // permit, mixed case
+        response.setStatus("peRmit");
+        verifyOutcome(response, OperationResult.SUCCESS, "peRmit");
+
+        // indeterminate, mixed case
+        response.setStatus("inDETerminate");
+        verifyOutcome(response, OperationResult.SUCCESS, "inDETerminate");
+
+        // deny, mixed case
+        response.setStatus("deNY");
+        verifyOutcome(response, OperationResult.FAILURE, "deNY");
+
+        // unknown status
+        response.setStatus("unknown");
+        verifyOutcome(response, OperationResult.FAILURE, "unknown");
+    }
+
+    private void verifyOutcome(DecisionResponse response, OperationResult expectedResult, String expectedMessage) {
+        oper.postProcessResponse(outcome, BASE_URI, rawResponse, response);
+        assertEquals(expectedResult, outcome.getResult());
+        assertEquals(expectedMessage, outcome.getMessage());
+        assertSame(response, outcome.getResponse());
+    }
+
+    @Override
+    protected Map<String, Object> makePayload() {
+        return new TreeMap<>(Map.of("hello", "world", "abc", "123"));
+    }
+}
diff --git a/models-interactions/model-actors/actor.xacml/src/test/resources/makeReqDefault.json b/models-interactions/model-actors/actor.xacml/src/test/resources/makeReqDefault.json
new file mode 100644
index 000000000..a08f13f43
--- /dev/null
+++ b/models-interactions/model-actors/actor.xacml/src/test/resources/makeReqDefault.json
@@ -0,0 +1,10 @@
+{
+  "ONAPName": "my-onap-name",
+  "ONAPComponent": "my-onap-component",
+  "ONAPInstance": "my-onap-instance",
+  "requestId": "abcdefghi",
+  "action": "guard",
+  "resource": {
+    "guard": {}
+  }
+}
diff --git a/models-interactions/model-actors/actor.xacml/src/test/resources/makeReqStd.json b/models-interactions/model-actors/actor.xacml/src/test/resources/makeReqStd.json
new file mode 100644
index 000000000..fd1f4c716
--- /dev/null
+++ b/models-interactions/model-actors/actor.xacml/src/test/resources/makeReqStd.json
@@ -0,0 +1,13 @@
+{
+  "ONAPName": "my-onap-name",
+  "ONAPComponent": "my-onap-component",
+  "ONAPInstance": "my-onap-instance",
+  "requestId": "abcdefghi",
+  "action": "guard",
+  "resource": {
+    "guard": {
+      "abc": "123",
+      "hello": "world"
+    }
+  }
+}
diff --git a/models-interactions/model-actors/actor.xacml/src/test/resources/service.yaml b/models-interactions/model-actors/actor.xacml/src/test/resources/service.yaml
new file mode 100644
index 000000000..81f4b8413
--- /dev/null
+++ b/models-interactions/model-actors/actor.xacml/src/test/resources/service.yaml
@@ -0,0 +1,35 @@
+#
+# ============LICENSE_START======================================================
+# ONAP
+# ===============================================================================
+# Copyright (C) 2020-2021 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========================================================
+#
+httpClients:
+- clientName: my-client
+  hostname: localhost
+  port: 80
+  basePath: base-url
+  managed: true
+actors:
+  XACML:
+    clientName: my-client
+    onapName: my-onap-name
+    onapComponent: my-onap-component
+    onapInstance: my-onap-instance
+    action: guard
+    operations:
+      Guard:
+        path: decide
diff --git a/models-interactions/model-actors/pom.xml b/models-interactions/model-actors/pom.xml
index 09bc5bad2..2a9698472 100644
--- a/models-interactions/model-actors/pom.xml
+++ b/models-interactions/model-actors/pom.xml
@@ -1,6 +1,6 @@
 <!--
   ============LICENSE_START=======================================================
-  Copyright (C) 2017-2020 AT&T Intellectual Property. All rights reserved.
+  Copyright (C) 2017-2021 AT&T Intellectual Property. All rights reserved.
   Modifications Copyright (C) 2020 Nordix Foundation.
   ================================================================================
   Licensed under the Apache License, Version 2.0 (the "License");
@@ -38,14 +38,15 @@
     <module>actorServiceProvider</module>
     <module>actor.test</module>
     <module>actor.aai</module>
-    <module>actor.guard</module>
+    <module>actor.cds</module>
     <module>actor.appc</module>
-    <module>actor.vfc</module>
-    <module>actor.sdnc</module>
     <module>actor.appclcm</module>
+    <module>actor.guard</module>
+    <module>actor.sdnc</module>
     <module>actor.sdnr</module>
     <module>actor.so</module>
-    <module>actor.cds</module>
+    <module>actor.vfc</module>
+    <module>actor.xacml</module>
   </modules>
   <dependencies>
     <dependency>
diff --git a/models-interactions/model-simulators/src/main/java/org/onap/policy/simulators/Util.java b/models-interactions/model-simulators/src/main/java/org/onap/policy/simulators/Util.java
index 29d665416..24fd7ece5 100644
--- a/models-interactions/model-simulators/src/main/java/org/onap/policy/simulators/Util.java
+++ b/models-interactions/model-simulators/src/main/java/org/onap/policy/simulators/Util.java
@@ -40,13 +40,13 @@ public final class Util {
     public static final String AAISIM_SERVER_NAME = "aaiSim";
     public static final String SOSIM_SERVER_NAME = "soSim";
     public static final String VFCSIM_SERVER_NAME = "vfcSim";
-    public static final String GUARDSIM_SERVER_NAME = "guardSim";
+    public static final String XACMLSIM_SERVER_NAME = "xacmlSim";
     public static final String SDNCSIM_SERVER_NAME = "sdncSim";
 
     public static final int AAISIM_SERVER_PORT = 6666;
     public static final int SOSIM_SERVER_PORT = 6667;
     public static final int VFCSIM_SERVER_PORT = 6668;
-    public static final int GUARDSIM_SERVER_PORT = 6669;
+    public static final int XACMLSIM_SERVER_PORT = 6669;
     public static final int SDNCSIM_SERVER_PORT = 6670;
     public static final int CDSSIM_SERVER_PORT = 6671;
     public static final int DMAAPSIM_SERVER_PORT = 3904;
@@ -137,9 +137,19 @@ public final class Util {
      * @throws InterruptedException if a thread is interrupted
      */
     public static HttpServletServer buildGuardSim() throws InterruptedException {
-        HttpServletServer testServer = HttpServletServerFactoryInstance.getServerFactory().build(GUARDSIM_SERVER_NAME,
-                LOCALHOST, GUARDSIM_SERVER_PORT, "/", false, true);
-        testServer.addServletClass("/*", GuardSimulatorJaxRs.class.getName());
+        return buildXacmlSim();
+    }
+
+    /**
+     * Build a xacml simulator.
+     *
+     * @return the simulator
+     * @throws InterruptedException if a thread is interrupted
+     */
+    public static HttpServletServer buildXacmlSim() throws InterruptedException {
+        HttpServletServer testServer = HttpServletServerFactoryInstance.getServerFactory().build(XACMLSIM_SERVER_NAME,
+                LOCALHOST, XACMLSIM_SERVER_PORT, "/", false, true);
+        testServer.addServletClass("/*", XacmlSimulatorJaxRs.class.getName());
         testServer.waitedStart(5000);
         waitForServerToListen(testServer.getPort());
         return testServer;
diff --git a/models-interactions/model-simulators/src/main/java/org/onap/policy/simulators/GuardSimulatorJaxRs.java b/models-interactions/model-simulators/src/main/java/org/onap/policy/simulators/XacmlSimulatorJaxRs.java
index 7a33a1950..f25b65c04 100644
--- a/models-interactions/model-simulators/src/main/java/org/onap/policy/simulators/GuardSimulatorJaxRs.java
+++ b/models-interactions/model-simulators/src/main/java/org/onap/policy/simulators/XacmlSimulatorJaxRs.java
@@ -32,7 +32,7 @@ import org.onap.policy.models.decisions.concepts.DecisionRequest;
 import org.onap.policy.models.decisions.concepts.DecisionResponse;
 
 @Path("/policy/pdpx/v1")
-public class GuardSimulatorJaxRs {
+public class XacmlSimulatorJaxRs {
     public static final String DENY_CLNAME = "denyGuard";
 
     /**
diff --git a/models-interactions/model-simulators/src/test/java/org/onap/policy/simulators/GuardSimulatorTest.java b/models-interactions/model-simulators/src/test/java/org/onap/policy/simulators/XacmlSimulatorTest.java
index e553636ec..53b476fb2 100644
--- a/models-interactions/model-simulators/src/test/java/org/onap/policy/simulators/GuardSimulatorTest.java
+++ b/models-interactions/model-simulators/src/test/java/org/onap/policy/simulators/XacmlSimulatorTest.java
@@ -2,7 +2,7 @@
  * ============LICENSE_START=======================================================
  * simulators
  * ================================================================================
- * Copyright (C) 2017-2019 AT&T Intellectual Property. All rights reserved.
+ * Copyright (C) 2017-2019, 2021 AT&T Intellectual Property. All rights reserved.
  * Modifications Copyright (C) 2019-2020 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -38,7 +38,7 @@ import org.onap.policy.models.decisions.concepts.DecisionRequest;
 import org.onap.policy.models.decisions.concepts.DecisionResponse;
 import org.onap.policy.rest.RestManager;
 
-public class GuardSimulatorTest {
+public class XacmlSimulatorTest {
     private static final StandardCoder coder = new StandardCoder();
 
     /**
@@ -47,7 +47,7 @@ public class GuardSimulatorTest {
     @BeforeClass
     public static void setupSimulator() {
         try {
-            org.onap.policy.simulators.Util.buildGuardSim();
+            org.onap.policy.simulators.Util.buildXacmlSim();
         } catch (Exception e) {
             fail(e.getMessage());
         }
@@ -61,7 +61,7 @@ public class GuardSimulatorTest {
     @Test
     public void testGuard() throws CoderException {
         String request = makeRequest("test_actor_id", "test_op_id", "test_target", "test_clName");
-        String url = "http://localhost:" + Util.GUARDSIM_SERVER_PORT + "/policy/pdpx/v1/decision";
+        String url = "http://localhost:" + Util.XACMLSIM_SERVER_PORT + "/policy/pdpx/v1/decision";
         Pair<Integer, String> response =
                 new RestManager().post(url, "testUname", "testPass", null, "application/json", request);
         assertNotNull(response);
diff --git a/models-sim/policy-models-simulators/src/test/resources/simParameters.json b/models-sim/policy-models-simulators/src/test/resources/simParameters.json
index df8de6ff7..0f1e6e680 100644
--- a/models-sim/policy-models-simulators/src/test/resources/simParameters.json
+++ b/models-sim/policy-models-simulators/src/test/resources/simParameters.json
@@ -19,8 +19,8 @@
             "https": true
         },
         {
-            "name": "Guard simulator",
-            "providerClass": "org.onap.policy.simulators.GuardSimulatorJaxRs",
+            "name": "XACML simulator",
+            "providerClass": "org.onap.policy.simulators.XacmlSimulatorJaxRs",
             "host": "localhost",
             "port": 6667,
             "https": true