1 files changed, 83 insertions, 0 deletions
diff --git a/dmaap-bc/src/main/java/org/onap/dmaap/dbcapi/util/PermissionBuilder.java b/dmaap-bc/src/main/java/org/onap/dmaap/dbcapi/util/PermissionBuilder.java
new file mode 100644
index 0000000..d1f6b2b
--- /dev/null
+++ b/dmaap-bc/src/main/java/org/onap/dmaap/dbcapi/util/PermissionBuilder.java
@@ -0,0 +1,83 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * org.onap.dmaap
+ * ================================================================================
+ * Copyright (C) 2019 Nokia 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.dmaap.dbcapi.util;
+
+import javax.servlet.http.HttpServletRequest;
+import org.onap.dmaap.dbcapi.model.Dmaap;
+import org.onap.dmaap.dbcapi.service.DmaapService;
+
+public class PermissionBuilder {
+
+    static final String API_NS_PROP = "ApiNamespace";
+    static final String DEFAULT_API_NS = "org.onap.dmaap-bc.api";
+    static final String BOOT_INSTANCE = "boot";
+    private static final String PERM_SEPARATOR = "|";
+    private static final String NS_SEPARATOR = ".";
+    private DmaapConfig dmaapConfig;
+    private DmaapService dmaapService;
+    private String instance;
+    private String apiNamespace;
+
+    public PermissionBuilder(DmaapConfig dmaapConfig, DmaapService dmaapService) {
+        this.dmaapConfig = dmaapConfig;
+        this.dmaapService = dmaapService;
+        initFields();
+    }
+
+    public synchronized void updateDmaapInstance() {
+        if(instance == null || instance.isEmpty() || instance.equalsIgnoreCase(BOOT_INSTANCE)) {
+            String dmaapName = getDmaapName();
+            instance = (dmaapName == null || dmaapName.isEmpty()) ? BOOT_INSTANCE : dmaapName;
+        }
+    }
+
+    public String buildPermission(HttpServletRequest httpRequest) {
+
+        StringBuilder sb = new StringBuilder(apiNamespace);
+        sb.append(NS_SEPARATOR)
+            .append(getPermissionType(httpRequest.getPathInfo()))
+            .append(PERM_SEPARATOR)
+            .append(instance)
+            .append(PERM_SEPARATOR)
+            .append(httpRequest.getMethod());
+        return sb.toString();
+    }
+
+
+    private void initFields() {
+        apiNamespace = dmaapConfig.getProperty(API_NS_PROP, DEFAULT_API_NS);
+        updateDmaapInstance();
+    }
+
+    private String getDmaapName() {
+        Dmaap dmaap = dmaapService.getDmaap();
+        return ( dmaap != null ) ? dmaap.getDmaapName() : BOOT_INSTANCE;
+    }
+
+    private String getPermissionType(String pathInfo) {
+        char pathSeparator = '/';
+        String[] pathSlices = pathInfo.split(String.valueOf(pathSeparator));
+        return pathSlices[1];
+    }
+
+    String getInstance() {
+        return instance;
+    }
+}