Add new Match application to XACML

Add new generic match application to XACML PDP. This app
will allow ONAP users to design their own matchable policy
types and use StdMatchableTranslator out-of-the box without
any modification. Fills the gap left behind since "configure"
via the Monitoring can support StdCombinedResultsTranslator,
but the Optimization policy types have a specific "closest
match" algorithm tied to them. Gives flexibility.

removed unused import

Issue-ID: POLICY-2596
Change-Id: I0aebae706fb9634e7bb13d78eff0ccc1ae4d752f
Signed-off-by: Pamela Dragosh <pdragosh@research.att.com>

2 files changed, 86 insertions, 0 deletions

diff --git a/applications/match/src/main/java/org/onap/policy/xacml/pdp/application/match/MatchPdpApplication.java b/applications/match/src/main/java/org/onap/policy/xacml/pdp/application/match/MatchPdpApplication.java
new file mode 100644
index 00000000..5f9cfa1a
--- /dev/null
+++ b/applications/match/src/main/java/org/onap/policy/xacml/pdp/application/match/MatchPdpApplication.java
@@ -0,0 +1,85 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2020 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.xacml.pdp.application.match;
+
+import java.nio.file.Path;
+import java.util.Arrays;
+import java.util.List;
+import org.onap.policy.common.endpoints.parameters.RestServerParameters;
+import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicyTypeIdentifier;
+import org.onap.policy.pdp.xacml.application.common.ToscaPolicyTranslator;
+import org.onap.policy.pdp.xacml.application.common.XacmlApplicationException;
+import org.onap.policy.pdp.xacml.application.common.std.StdMatchableTranslator;
+import org.onap.policy.pdp.xacml.application.common.std.StdXacmlApplicationServiceProvider;
+
+public class MatchPdpApplication extends StdXacmlApplicationServiceProvider {
+
+    public static final String ONAP_MATCH_BASE_POLICY_TYPE = "onap.policies.Match";
+    public static final String ONAP_MATCH_DERIVED_POLICY_TYPE = "onap.policies.match.";
+
+    private static final ToscaPolicyTypeIdentifier supportedPolicy = new ToscaPolicyTypeIdentifier(
+            ONAP_MATCH_BASE_POLICY_TYPE, "1.0.0");
+
+    private StdMatchableTranslator translator = new StdMatchableTranslator();
+
+    @Override
+    public String applicationName() {
+        return "match";
+    }
+
+    @Override
+    public List<String> actionDecisionsSupported() {
+        return Arrays.asList("match");
+    }
+
+    @Override
+    public void initialize(Path pathForData, RestServerParameters policyApiParameters)
+            throws XacmlApplicationException {
+        //
+        // Store our API parameters and path for translator so it
+        // can go get Policy Types
+        //
+        this.translator.setPathForData(pathForData);
+        this.translator.setApiRestParameters(policyApiParameters);
+        //
+        // Let our super class do its thing
+        //
+        super.initialize(pathForData, policyApiParameters);
+    }
+
+    @Override
+    public synchronized List<ToscaPolicyTypeIdentifier> supportedPolicyTypes() {
+        return Arrays.asList(supportedPolicy);
+    }
+
+    @Override
+    public boolean canSupportPolicyType(ToscaPolicyTypeIdentifier policyTypeId) {
+        return policyTypeId.getName().startsWith(ONAP_MATCH_DERIVED_POLICY_TYPE);
+    }
+
+    @Override
+    protected ToscaPolicyTranslator getTranslator(String type) {
+        return translator;
+    }
+
+}
diff --git a/applications/match/src/main/resources/META-INF/services/org.onap.policy.pdp.xacml.application.common.XacmlApplicationServiceProvider b/applications/match/src/main/resources/META-INF/services/org.onap.policy.pdp.xacml.application.common.XacmlApplicationServiceProvider
new file mode 100644
index 00000000..5b76962e
--- /dev/null
+++ b/applications/match/src/main/resources/META-INF/services/org.onap.policy.pdp.xacml.application.common.XacmlApplicationServiceProvider
@@ -0,0 +1 @@
+org.onap.policy.xacml.pdp.application.match.MatchPdpApplication
\ No newline at end of file