1 files changed, 102 insertions, 0 deletions
diff --git a/aai-resources/src/main/java/org/onap/aai/interceptors/pre/VersionInterceptor.java b/aai-resources/src/main/java/org/onap/aai/interceptors/pre/VersionInterceptor.java
new file mode 100644
index 0000000..f3c5768
--- /dev/null
+++ b/aai-resources/src/main/java/org/onap/aai/interceptors/pre/VersionInterceptor.java
@@ -0,0 +1,102 @@
+/**
+ * ============LICENSE_START=======================================================
+ * org.onap.aai
+ * ================================================================================
+ * Copyright © 2017-2018 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.aai.interceptors.pre;
+
+import org.onap.aai.exceptions.AAIException;
+import org.onap.aai.interceptors.AAIContainerFilter;
+import org.onap.aai.logging.ErrorLogHelper;
+import org.onap.aai.setup.SchemaVersion;
+import org.onap.aai.setup.SchemaVersions;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import javax.annotation.Priority;
+import javax.ws.rs.container.ContainerRequestContext;
+import javax.ws.rs.container.ContainerRequestFilter;
+import javax.ws.rs.container.PreMatching;
+import javax.ws.rs.core.Response;
+import java.net.URI;
+import java.util.ArrayList;
+import java.util.Set;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import java.util.stream.Collectors;
+
+@PreMatching
+@Priority(AAIRequestFilterPriority.VERSION)
+public class VersionInterceptor extends AAIContainerFilter implements ContainerRequestFilter {
+
+    public static final Pattern EXTRACT_VERSION_PATTERN = Pattern.compile("^(v[1-9][0-9]*).*$");
+
+    private final Set<String> allowedVersions;
+
+    private final SchemaVersions schemaVersions;
+
+    @Autowired
+    public VersionInterceptor(SchemaVersions schemaVersions){
+        this.schemaVersions = schemaVersions;
+        allowedVersions  = schemaVersions.getVersions()
+            .stream()
+            .map(SchemaVersion::toString)
+            .collect(Collectors.toSet());
+
+    }
+
+    @Override
+    public void filter(ContainerRequestContext requestContext) {
+
+        String uri = requestContext.getUriInfo().getPath();
+
+        if (uri.startsWith("search") || uri.startsWith("util/echo") || uri.startsWith("tools")) {
+            return;
+		}
+
+        Matcher matcher = EXTRACT_VERSION_PATTERN.matcher(uri);
+
+        String version = null;
+        if(matcher.matches()){
+            version = matcher.group(1);
+        } else {
+            requestContext.abortWith(createInvalidVersionResponse("AAI_3017", requestContext, version));
+            return;
+        }
+
+        if(!allowedVersions.contains(version)){
+            requestContext.abortWith(createInvalidVersionResponse("AAI_3016", requestContext, version));
+        }
+    }
+
+    private Response createInvalidVersionResponse(String errorCode, ContainerRequestContext context, String version) {
+        AAIException e = new AAIException(errorCode);
+        ArrayList<String> templateVars = new ArrayList<>();
+
+        if (templateVars.isEmpty()) {
+            templateVars.add(context.getMethod());
+            templateVars.add(context.getUriInfo().getPath());
+            templateVars.add(version);
+        }
+
+        String entity = ErrorLogHelper.getRESTAPIErrorResponse(context.getAcceptableMediaTypes(), e, templateVars);
+
+        return Response
+                .status(e.getErrorObject().getHTTPResponseCode())
+                .entity(entity)
+                .build();
+    }
+}