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authorPamela Dragosh <pdragosh@research.att.com>2019-03-09 11:48:44 -0500
committerPamela Dragosh <pdragosh@research.att.com>2019-03-15 08:54:05 -0400
commitb909b14fe88c5fe8f096cf8b471a2aa799d84739 (patch)
tree19de65fff7618bfad91acb0b803210a93dbb86cd /applications/common/src/main/java
parent4b2ef1a5a9bf92aeb7edc1512f7a6cd8e1be99d8 (diff)
Monitoring policy creation foundation
Upgrde to xacml v2.0.0 release artifact. Some re-arrangement of classes. New class to support a common dictionary among the monitoring applications. I may move it to a common under the main since some of the values are shareable. Created application service provider, so the XACML main knows what policy types are pre-loaded and can report them back to the PAP. struggled with cucumber, which does not create TemporaryFolder although the documentation says its supported. Added a new Policy Finder specific to ONAP which does quicker job to load policies. Issue-ID: POLICY-1273 Change-Id: I4af15a64da3b42d48f29809710421b1649625adc Signed-off-by: Pamela Dragosh <pdragosh@research.att.com>
Diffstat (limited to 'applications/common/src/main/java')
-rw-r--r--applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/OnapPolicyFinderFactory.java252
-rw-r--r--applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/ToscaDictionary.java69
-rw-r--r--applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/ToscaPolicyConversionException.java50
-rw-r--r--applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/ToscaPolicyConverter.java36
-rw-r--r--applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/ToscaPolicyConverterUtils.java102
-rw-r--r--applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/XacmlApplicationServiceProvider.java98
-rw-r--r--applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/XacmlUpdatePolicyUtils.java88
7 files changed, 695 insertions, 0 deletions
diff --git a/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/OnapPolicyFinderFactory.java b/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/OnapPolicyFinderFactory.java
new file mode 100644
index 00000000..1e47c5b5
--- /dev/null
+++ b/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/OnapPolicyFinderFactory.java
@@ -0,0 +1,252 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2019 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+
+package org.onap.policy.pdp.xacml.application.common;
+
+import com.att.research.xacml.std.StdStatusCode;
+import com.att.research.xacml.std.dom.DOMStructureException;
+import com.att.research.xacml.util.FactoryException;
+import com.att.research.xacml.util.XACMLProperties;
+import com.att.research.xacmlatt.pdp.policy.Policy;
+import com.att.research.xacmlatt.pdp.policy.PolicyDef;
+import com.att.research.xacmlatt.pdp.policy.PolicyFinder;
+import com.att.research.xacmlatt.pdp.policy.PolicyFinderFactory;
+import com.att.research.xacmlatt.pdp.policy.dom.DOMPolicyDef;
+import com.att.research.xacmlatt.pdp.std.StdPolicyFinder;
+import com.google.common.base.Splitter;
+import com.google.common.base.Strings;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLConnection;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Properties;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Implements ONAP specific ability to find Policies for XACML PDP engine.
+ *
+ * @author pameladragosh
+ *
+ */
+public class OnapPolicyFinderFactory extends PolicyFinderFactory {
+
+ public static final String PROP_FILE = ".file";
+ public static final String PROP_URL = ".url";
+
+ private static Logger logger = LoggerFactory.getLogger(OnapPolicyFinderFactory.class);
+ private List<PolicyDef> rootPolicies;
+ private List<PolicyDef> referencedPolicies;
+ private boolean needsInit = true;
+
+ private Properties properties = null;
+
+ /**
+ * Empty constructor.
+ */
+ public OnapPolicyFinderFactory() {
+ logger.debug("Constructed without properties");
+ //
+ // Here we differ from the StdPolicyFinderFactory in that we initialize right away.
+ // We do not wait for a policy request to happen to look for and load policies.
+ //
+ this.init();
+ }
+
+ /**
+ * Constructor with properties passed. This will be preferred.
+ *
+ * @param properties Properties object
+ */
+ public OnapPolicyFinderFactory(Properties properties) {
+ super(properties);
+ logger.debug("Constructed using properties {}", properties);
+ //
+ // Save our properties
+ //
+ this.properties = properties;
+ //
+ // Here we differ from the StdPolicyFinderFactory in that we initialize right away.
+ // We do not wait for a policy request to happen to look for and load policies.
+ //
+ this.init();
+ }
+
+ /**
+ * Loads the <code>PolicyDef</code> for the given <code>String</code> identifier by looking first
+ * for a ".file" property associated with the ID and using that to load from a <code>File</code> and
+ * looking for a ".url" property associated with the ID and using that to load from a <code>URL</code>.
+ *
+ * @param policyId the <code>String</code> identifier for the policy
+ * @return a <code>PolicyDef</code> loaded from the given identifier
+ */
+ protected PolicyDef loadPolicyDef(String policyId) {
+ String propLocation = null;
+ if (this.properties == null) {
+ propLocation = XACMLProperties.getProperty(policyId + PROP_FILE);
+ } else {
+ propLocation = this.properties.getProperty(policyId + PROP_FILE);
+ }
+ if (propLocation != null) {
+ //
+ // Try to load it from the file
+ //
+ PolicyDef policy = this.loadPolicyFileDef(propLocation);
+ if (policy != null) {
+ return policy;
+ }
+ }
+ if (this.properties == null) {
+ propLocation = XACMLProperties.getProperty(policyId + PROP_URL);
+ } else {
+ propLocation = this.properties.getProperty(policyId + PROP_URL);
+ }
+ if (propLocation != null) {
+ PolicyDef policy = this.loadPolicyUrlDef(propLocation);
+ if (policy != null) {
+ return policy;
+ }
+ }
+
+ logger.error("No known location for Policy {}", policyId);
+ return null;
+ }
+
+ protected PolicyDef loadPolicyFileDef(String propLocation) {
+ File fileLocation = new File(propLocation);
+ if (!fileLocation.exists()) {
+ logger.error("Policy file {} does not exist.", fileLocation.getAbsolutePath());
+ return null;
+ }
+ if (!fileLocation.canRead()) {
+ logger.error("Policy file {} cannot be read.", fileLocation.getAbsolutePath());
+ return null;
+ }
+ try {
+ logger.info("Loading policy file {}", fileLocation);
+ PolicyDef policyDef = DOMPolicyDef.load(fileLocation);
+ if (policyDef != null) {
+ return policyDef;
+ }
+ return new Policy(StdStatusCode.STATUS_CODE_SYNTAX_ERROR, "DOM Could not load policy");
+ } catch (DOMStructureException ex) {
+ logger.error("Error loading policy file {}: {}", fileLocation.getAbsolutePath(), ex);
+ return new Policy(StdStatusCode.STATUS_CODE_SYNTAX_ERROR, ex.getMessage());
+ }
+ }
+
+ protected PolicyDef loadPolicyUrlDef(String propLocation) {
+ InputStream is = null;
+ try {
+ URL url = new URL(propLocation);
+ URLConnection urlConnection = url.openConnection();
+ OnapPolicyFinderFactory.logger.info("Loading policy file {}", url);
+ is = urlConnection.getInputStream();
+ PolicyDef policyDef = DOMPolicyDef.load(is);
+ if (policyDef != null) {
+ return policyDef;
+ }
+ } catch (MalformedURLException ex) {
+ logger.error("Invalid URL " + propLocation + ": " + ex.getMessage(), ex);
+ } catch (IOException ex) {
+ logger.error("IOException opening URL {}: {}{}",
+ propLocation, ex.getMessage(), ex);
+ } catch (DOMStructureException ex) {
+ logger.error("Invalid Policy " + propLocation + ": " + ex.getMessage(), ex);
+ return new Policy(StdStatusCode.STATUS_CODE_SYNTAX_ERROR, ex.getMessage());
+ } finally {
+ if (is != null) {
+ try {
+ is.close();
+ } catch (IOException e) {
+ logger.error("Exception closing InputStream for GET of url {}: {}",
+ propLocation, e.getMessage() + " (May be memory leak)", e);
+ }
+ }
+ }
+ return null;
+ }
+
+ /**
+ * Finds the identifiers for all of the policies referenced by the given property name in the
+ * <code>XACMLProperties</code> and loads them using the requested loading method.
+ *
+ * @param propertyName the <code>String</code> name of the property containing the list of policy identifiers
+ * @return a <code>List</code> of <code>PolicyDef</code>s loaded from the given property name
+ */
+ protected List<PolicyDef> getPolicyDefs(String propertyName) {
+ String policyIds;
+ if (this.properties != null) {
+ policyIds = this.properties.getProperty(propertyName);
+ } else {
+ policyIds = XACMLProperties.getProperty(propertyName);
+ }
+ if (Strings.isNullOrEmpty(policyIds)) {
+ return Collections.emptyList();
+ }
+
+ Iterable<String> policyIdArray = Splitter.on(',').trimResults().omitEmptyStrings().split(policyIds);
+ if (policyIdArray == null) {
+ return Collections.emptyList();
+ }
+
+ List<PolicyDef> listPolicyDefs = new ArrayList<>();
+ for (String policyId : policyIdArray) {
+ PolicyDef policyDef = this.loadPolicyDef(policyId);
+ if (policyDef != null) {
+ listPolicyDefs.add(policyDef);
+ }
+ }
+ return listPolicyDefs;
+ }
+
+ protected synchronized void init() {
+ if (this.needsInit) {
+ logger.debug("Initializing OnapPolicyFinderFactory Properties ");
+ this.rootPolicies = this.getPolicyDefs(XACMLProperties.PROP_ROOTPOLICIES);
+ this.referencedPolicies = this.getPolicyDefs(XACMLProperties.PROP_REFERENCEDPOLICIES);
+ logger.debug("Root Policies: {}", this.rootPolicies.size());
+ logger.debug("Referenced Policies: {}", this.referencedPolicies.size());
+ this.needsInit = false;
+ }
+ }
+
+ @Override
+ public PolicyFinder getPolicyFinder() throws FactoryException {
+ //
+ // Force using any properties that were passed upon construction
+ //
+ return new StdPolicyFinder(this.rootPolicies, this.referencedPolicies, this.properties);
+ }
+
+ @Override
+ public PolicyFinder getPolicyFinder(Properties properties) throws FactoryException {
+ return new StdPolicyFinder(this.rootPolicies, this.referencedPolicies, properties);
+ }
+
+}
diff --git a/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/ToscaDictionary.java b/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/ToscaDictionary.java
new file mode 100644
index 00000000..c65d7a17
--- /dev/null
+++ b/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/ToscaDictionary.java
@@ -0,0 +1,69 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2019 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.pdp.xacml.application.common;
+
+import com.att.research.xacml.api.Identifier;
+import com.att.research.xacml.api.XACML3;
+import com.att.research.xacml.std.IdentifierImpl;
+
+public final class ToscaDictionary {
+
+ private ToscaDictionary() {
+ super();
+ }
+
+ /*
+ * These are the ID's for various TOSCA Policy Types we are supporting in the Applications.
+ */
+ public static final Identifier URN_ONAP =
+ new IdentifierImpl("urn:org:onap");
+
+ public static final Identifier ID_RESOURCE_POLICY_ID =
+ XACML3.ID_RESOURCE_RESOURCE_ID;
+
+ public static final Identifier ID_RESOURCE_POLICY_TYPE =
+ new IdentifierImpl(URN_ONAP, "policy-type");
+
+ public static final Identifier ID_RESOURCE_POLICY_TYPE_VERSION =
+ new IdentifierImpl(URN_ONAP, "policy-type-version");
+
+ public static final Identifier ID_OBLIGATION_REST_BODY =
+ new IdentifierImpl(URN_ONAP, "rest:body");
+
+ public static final Identifier ID_OBLIGATION_POLICY_MONITORING =
+ new IdentifierImpl(URN_ONAP, ":obligation:monitoring");
+
+ public static final Identifier ID_OBLIGATION_POLICY_MONITORING_CONTENTS =
+ new IdentifierImpl(URN_ONAP, ":obligation:monitoring:contents");
+
+ public static final Identifier ID_OBLIGATION_POLICY_MONITORING_CATEGORY =
+ XACML3.ID_ATTRIBUTE_CATEGORY_RESOURCE;
+
+ public static final Identifier ID_OBLIGATION_POLICY_MONITORING_DATATYPE =
+ XACML3.ID_DATATYPE_STRING;
+
+ public static final Identifier ID_OBLIGATION_ISSUER =
+ new IdentifierImpl(URN_ONAP, "issuer:monitoring");
+
+
+}
diff --git a/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/ToscaPolicyConversionException.java b/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/ToscaPolicyConversionException.java
new file mode 100644
index 00000000..071a14e1
--- /dev/null
+++ b/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/ToscaPolicyConversionException.java
@@ -0,0 +1,50 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2019 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.pdp.xacml.application.common;
+
+public class ToscaPolicyConversionException extends Exception {
+
+ private static final long serialVersionUID = 1L;
+
+ public ToscaPolicyConversionException() {
+ super();
+ }
+
+ public ToscaPolicyConversionException(String message) {
+ super(message);
+ }
+
+ public ToscaPolicyConversionException(Throwable cause) {
+ super(cause);
+ }
+
+ public ToscaPolicyConversionException(String message, Throwable cause) {
+ super(message, cause);
+ }
+
+ public ToscaPolicyConversionException(String message, Throwable cause, boolean enableSuppression,
+ boolean writableStackTrace) {
+ super(message, cause, enableSuppression, writableStackTrace);
+ }
+
+}
diff --git a/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/ToscaPolicyConverter.java b/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/ToscaPolicyConverter.java
new file mode 100644
index 00000000..f6f75a4c
--- /dev/null
+++ b/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/ToscaPolicyConverter.java
@@ -0,0 +1,36 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2019 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.pdp.xacml.application.common;
+
+import java.io.InputStream;
+import java.util.List;
+import java.util.Map;
+
+import oasis.names.tc.xacml._3_0.core.schema.wd_17.PolicyType;
+
+public interface ToscaPolicyConverter {
+
+ List<PolicyType> convertPolicies(InputStream isToscaPolicy) throws ToscaPolicyConversionException;
+
+ List<PolicyType> convertPolicies(Map<String, Object> toscaObject) throws ToscaPolicyConversionException;
+}
diff --git a/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/ToscaPolicyConverterUtils.java b/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/ToscaPolicyConverterUtils.java
new file mode 100644
index 00000000..cd197935
--- /dev/null
+++ b/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/ToscaPolicyConverterUtils.java
@@ -0,0 +1,102 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2019 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.pdp.xacml.application.common;
+
+import com.att.research.xacml.api.Identifier;
+import oasis.names.tc.xacml._3_0.core.schema.wd_17.AllOfType;
+import oasis.names.tc.xacml._3_0.core.schema.wd_17.AttributeDesignatorType;
+import oasis.names.tc.xacml._3_0.core.schema.wd_17.AttributeValueType;
+import oasis.names.tc.xacml._3_0.core.schema.wd_17.MatchType;
+
+/**
+ * This class contains static methods of helper classes to convert TOSCA policies
+ * into XACML policies.
+ *
+ * @author pameladragosh
+ *
+ */
+public final class ToscaPolicyConverterUtils {
+
+ private ToscaPolicyConverterUtils() {
+ super();
+ }
+
+ /**
+ * This method builds a MatchType for TargetType object for AttributeValue and AttributeDesignator
+ * combination.
+ *
+ * @param <T> Incoming value could be any object
+ * @param function Function for the Match
+ * @param value Attribute value used
+ * @param datatype Datatype for attribute value and AttributeDesignator
+ * @param designatorId ID for the AttributeDesignator
+ * @param designatorCategory Category ID for the AttributeDesignator
+ * @return The MatchType object
+ */
+ public static <T> MatchType buildMatchTypeDesignator(Identifier function,
+ T value,
+ Identifier datatype,
+ Identifier designatorId,
+ Identifier designatorCategory) {
+ //
+ // Create the MatchType object and set its function
+ //
+ MatchType match = new MatchType();
+ match.setMatchId(function.stringValue());
+ //
+ // Add in the AttributeValue object
+ //
+ AttributeValueType valueType = new AttributeValueType();
+ valueType.setDataType(datatype.stringValue());
+ valueType.getContent().add(value);
+
+ match.setAttributeValue(valueType);
+ //
+ // Add in the AttributeDesignator object
+ //
+ AttributeDesignatorType designator = new AttributeDesignatorType();
+ designator.setAttributeId(designatorId.stringValue());
+ designator.setCategory(designatorCategory.stringValue());
+ designator.setDataType(datatype.stringValue());
+
+ match.setAttributeDesignator(designator);
+ //
+ // Done
+ //
+ return match;
+ }
+
+ /**
+ * Builds an AllOfType (AND) with one or more MatchType objects.
+ *
+ * @param matches A list of one or more MatchType
+ * @return The AllOf object
+ */
+ public static AllOfType buildAllOf(MatchType... matches) {
+ AllOfType allOf = new AllOfType();
+ for (MatchType match : matches) {
+ allOf.getMatch().add(match);
+ }
+ return allOf;
+ }
+}
diff --git a/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/XacmlApplicationServiceProvider.java b/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/XacmlApplicationServiceProvider.java
new file mode 100644
index 00000000..65648ea8
--- /dev/null
+++ b/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/XacmlApplicationServiceProvider.java
@@ -0,0 +1,98 @@
+/* ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2019 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.pdp.xacml.application.common;
+
+import java.nio.file.Path;
+import java.util.List;
+import java.util.Map;
+
+import org.json.JSONObject;
+
+/**
+ * This interface is how the XACML REST controller can communicate
+ * with Policy Type implementation applications.
+ * Applications should register themselves as this service provider
+ * and implement these methods.
+ *
+ * @author pameladragosh
+ *
+ */
+public interface XacmlApplicationServiceProvider {
+
+ /**
+ * Name of the application for auditing and organization of its data.
+ *
+ * @return String
+ */
+ String applicationName();
+
+ /**
+ * Returns a list of action decisions supported by the application.
+ *
+ * @return List of String (eg. "configure", "placement", "naming")
+ */
+ List<String> actionDecisionsSupported();
+
+ /**
+ * Initializes the application and gives it a Path for storing its
+ * data. The Path may be already populated with previous data.
+ *
+ * @param pathForData Local Path
+ */
+ void initialize(Path pathForData);
+
+ /**
+ * Returns a list of supported Tosca Policy Types.
+ *
+ * @return List of Strings (eg. "onap.policy.foo.bar")
+ */
+ List<String> supportedPolicyTypes();
+
+ /**
+ * Asks whether the application can support the incoming
+ * Tosca Policy Type and version.
+ *
+ * @param policyType String Tosca Policy Type
+ * @param policyTypeVersion String of the Tosca Policy Type version
+ * @return true if supported
+ */
+ boolean canSupportPolicyType(String policyType, String policyTypeVersion);
+
+ /**
+ * Load a Map representation of a Tosca Policy.
+ *
+ * @param toscaPolicies Map of Tosca Policy Objects
+ */
+ void loadPolicies(Map<String, Object> toscaPolicies);
+
+ /**
+ * Makes a decision given the incoming request and returns a response.
+ *
+ * <P>NOTE: I may want to change this to an object that represents the
+ * schema.
+ *
+ * @param jsonSchema Incoming Json
+ * @return response
+ */
+ JSONObject makeDecision(JSONObject jsonSchema);
+
+}
diff --git a/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/XacmlUpdatePolicyUtils.java b/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/XacmlUpdatePolicyUtils.java
new file mode 100644
index 00000000..957242c5
--- /dev/null
+++ b/applications/common/src/main/java/org/onap/policy/pdp/xacml/application/common/XacmlUpdatePolicyUtils.java
@@ -0,0 +1,88 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2019 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.pdp.xacml.application.common;
+
+import oasis.names.tc.xacml._3_0.core.schema.wd_17.IdReferenceType;
+import oasis.names.tc.xacml._3_0.core.schema.wd_17.ObjectFactory;
+import oasis.names.tc.xacml._3_0.core.schema.wd_17.PolicySetType;
+import oasis.names.tc.xacml._3_0.core.schema.wd_17.PolicyType;
+
+public class XacmlUpdatePolicyUtils {
+
+ private XacmlUpdatePolicyUtils() {
+ super();
+ }
+
+ /**
+ * This method updates a root PolicySetType by adding in a PolicyType as a reference.
+ *
+ * @param rootPolicy Root PolicySet being updated
+ * @param referencedPolicies A list of PolicyType being added as a references
+ * @return the rootPolicy PolicySet object
+ */
+ public static PolicySetType updateXacmlRootPolicy(PolicySetType rootPolicy, PolicyType... referencedPolicies) {
+ ObjectFactory factory = new ObjectFactory();
+ //
+ // Iterate each policy
+ //
+ for (PolicyType referencedPolicy : referencedPolicies) {
+ IdReferenceType reference = new IdReferenceType();
+ reference.setValue(referencedPolicy.getPolicyId());
+ //
+ // Add it in
+ //
+ rootPolicy.getPolicySetOrPolicyOrPolicySetIdReference().add(factory.createPolicySetIdReference(reference));
+ }
+ //
+ // Return the updated object
+ //
+ return rootPolicy;
+ }
+
+ /**
+ * This method updates a root PolicySetType by adding in a PolicyType as a reference.
+ *
+ * @param rootPolicy Root PolicySet being updated
+ * @param referencedPolicySets A list of PolicySetType being added as a references
+ * @return the rootPolicy PolicySet object
+ */
+ public static PolicySetType updateXacmlRootPolicy(PolicySetType rootPolicy, PolicySetType... referencedPolicySets) {
+ ObjectFactory factory = new ObjectFactory();
+ //
+ // Iterate each policy
+ //
+ for (PolicySetType referencedPolicySet : referencedPolicySets) {
+ IdReferenceType reference = new IdReferenceType();
+ reference.setValue(referencedPolicySet.getPolicySetId());
+ //
+ // Add it in
+ //
+ rootPolicy.getPolicySetOrPolicyOrPolicySetIdReference().add(factory.createPolicySetIdReference(reference));
+ }
+ //
+ // Return the updated object
+ //
+ return rootPolicy;
+ }
+
+}