New listPolicy API to check pushed policies in PDP

[policy/engine.git] / ONAP-PDP-REST / src / main / java / org / onap / policy / pdp / rest / api / services / ListPolicyService.java

diff --git a/ONAP-PDP-REST/src/main/java/org/onap/policy/pdp/rest/api/services/ListPolicyService.java b/ONAP-PDP-REST/src/main/java/org/onap/policy/pdp/rest/api/services/ListPolicyService.java
new file mode 100644 (file)
index 0000000..cbb2d6f
--- /dev/null
+++ b/ONAP-PDP-REST/src/main/java/org/onap/policy/pdp/rest/api/services/ListPolicyService.java
@@ -0,0 +1,100 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP-PDP-REST
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.pdp.rest.api.services;
+
+import com.att.research.xacml.api.pap.PAPException;
+import com.att.research.xacml.util.XACMLProperties;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Files;
+import java.util.Collection;
+import java.util.List;
+import java.util.Properties;
+import java.util.Set;
+import java.util.UUID;
+import java.util.stream.Collectors;
+import org.onap.policy.api.ConfigNameRequest;
+import org.onap.policy.common.logging.flexlogger.FlexLogger;
+import org.onap.policy.common.logging.flexlogger.Logger;
+import org.onap.policy.pdp.rest.XACMLPdpLoader;
+import org.springframework.http.HttpStatus;
+
+
+public class ListPolicyService {
+
+    private static Logger logger = FlexLogger.getLogger(ListPolicyService.class.getName());
+
+    private Collection<String> results = null;
+    private HttpStatus status = HttpStatus.BAD_REQUEST;
+    private ConfigNameRequest configRequestParameters = null;
+    private String requestId = null;
+
+
+    public ListPolicyService() {
+        // Default Constructor
+    }
+
+    /**
+     * Instantiates a new list policy service.
+     *
+     * @param configRequestParameters the config request parameters
+     */
+    public ListPolicyService(final ConfigNameRequest configRequestParameters) {
+        requestId = UUID.randomUUID().toString();
+        this.configRequestParameters = configRequestParameters;
+
+        try {
+            run();
+        } catch (Exception e) {
+            logger.warn("ListPolicy - ERROR for request - " + requestId + ", " + e);
+            status = HttpStatus.BAD_REQUEST;
+            results = null;
+        }
+
+        logger.info("Result for listPolicy - " + configRequestParameters + ", for request - " + requestId
+                + " - Response - " + results);
+    }
+
+    private void run() throws PAPException, IOException {
+        Properties currentProperties = new Properties();
+        try (InputStream is = Files.newInputStream(XACMLPdpLoader.getPDPPolicyCache())) {
+            currentProperties.load(is);
+        }
+
+        Set<String> listOfPolicies = XACMLProperties.getRootPolicyIDs(currentProperties);
+        results = filterList(listOfPolicies, configRequestParameters.getPolicyName());
+        status = HttpStatus.OK;
+
+    }
+
+    private List<String> filterList(Set<String> list, String regex) {
+        return list.stream().filter(s -> s.matches(regex)).collect(Collectors.toList());
+    }
+
+    public Collection<String> getResult() {
+        return results;
+    }
+
+    public HttpStatus getResponseCode() {
+        return status;
+    }
+
+}