HDFS-8637. OzoneHandler : Add Error Table. (Contributed by Anu Engineer)

hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-7240.txt

@@ -11,3 +11,6 @@
     Arpit Agarwal)
 
     HDFS-8448. Create REST Interface for Volumes. (Anu Engineer via cnauroth)
+
+    HDFS-8637. OzoneHandler : Add Error Table. (Anu Engineer via Arpit Agarwal)
+

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/web/exceptions/ErrorTable.java

@@ -0,0 +1,204 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ */
+
+package org.apache.hadoop.ozone.web.exceptions;
+
+import org.apache.hadoop.ozone.web.handlers.UserArgs;
+
+import static java.net.HttpURLConnection.HTTP_BAD_REQUEST;
+import static java.net.HttpURLConnection.HTTP_CONFLICT;
+import static java.net.HttpURLConnection.HTTP_FORBIDDEN;
+import static java.net.HttpURLConnection.HTTP_INTERNAL_ERROR;
+import static java.net.HttpURLConnection.HTTP_NOT_FOUND;
+import static java.net.HttpURLConnection.HTTP_UNAUTHORIZED;
+
+/**
+ * Error Table represents the Errors from Ozone Rest API layer.
+ *
+ * Please note : The errors in this table are sorted by the HTTP_ERROR codes
+ * if you add new error codes to this table please follow the same convention.
+ */
+public final class ErrorTable {
+
+  /* Error 400 */
+  public static final OzoneException MISSING_VERSION =
+      new OzoneException(HTTP_BAD_REQUEST, "missingVersion",
+                         "x-ozone-version header is required.");
+
+  public static final OzoneException MISSING_DATE =
+      new OzoneException(HTTP_BAD_REQUEST, "missingDate",
+                         "Date header is required.");
+
+  public static final OzoneException BAD_DATE =
+      new OzoneException(HTTP_BAD_REQUEST, "badDate",
+                         "Unable to parse date format.");
+
+  public static final OzoneException MALFORMED_QUOTA =
+      new OzoneException(HTTP_BAD_REQUEST, "malformedQuota",
+                         "Invalid quota specified.");
+
+  public static final OzoneException MALFORMED_ACL =
+      new OzoneException(HTTP_BAD_REQUEST, "malformedACL",
+                         "Invalid ACL specified.");
+
+  public static final OzoneException INVALID_VOLUME_NAME =
+      new OzoneException(HTTP_BAD_REQUEST, "invalidVolumeName",
+                         "Invalid volume name.");
+
+  public static final OzoneException INVALID_QUERY_PARAM =
+      new OzoneException(HTTP_BAD_REQUEST, "invalidQueryParam",
+                         "Invalid query parameter.");
+
+  public static final OzoneException INVALID_BUCKET_NAME =
+      new OzoneException(HTTP_BAD_REQUEST, "invalidBucketName",
+                         "Invalid bucket name.");
+
+  public static final OzoneException INVALID_KEY =
+      new OzoneException(HTTP_BAD_REQUEST, "invalidKey", "Invalid key.");
+
+  public static final OzoneException INVALID_REQUEST =
+      new OzoneException(HTTP_BAD_REQUEST, "invalidRequest",
+                         "Error in request.");
+
+  public static final OzoneException MALFORMED_BUCKET_VERSION =
+      new OzoneException(HTTP_BAD_REQUEST, "malformedBucketVersion",
+                         "Malformed bucket version or version not unique.");
+
+  public static final OzoneException MALFORMED_STORAGE_CLASS =
+      new OzoneException(HTTP_BAD_REQUEST, "malformedStorageClass",
+                         "Invalid storage class specified.");
+
+  public static final OzoneException BAD_DIGEST =
+      new OzoneException(HTTP_BAD_REQUEST, "badDigest",
+                         "Content MD5 does not match.");
+
+  public static final OzoneException INCOMPLETE_BODY =
+      new OzoneException(HTTP_BAD_REQUEST, "incompleteBody",
+                         "Content length does not match stream size.");
+
+  public static final OzoneException BAD_AUTHORIZATION =
+      new OzoneException(HTTP_BAD_REQUEST, "badAuthorization",
+                         "Missing authorization or authorization has to be " +
+                             "unique.");
+
+  /* Error 401 */
+  public static final OzoneException UNAUTHORIZED =
+      new OzoneException(HTTP_UNAUTHORIZED, "Unauthorized",
+                         "Access token is missing or invalid token.");
+
+  /* Error 403 */
+  public static final OzoneException ACCESS_DENIED =
+      new OzoneException(HTTP_FORBIDDEN, "accessDenied", "Access denied.");
+
+  /* Error 404 */
+  public static final OzoneException USER_NOT_FOUND =
+      new OzoneException(HTTP_NOT_FOUND, "userNotFound", "Invalid user name.");
+
+  public static final OzoneException VOLUME_NOT_FOUND =
+      new OzoneException(HTTP_NOT_FOUND, "volumeNotFound", "No such volume.");
+
+  /* Error 409 */
+  public static final OzoneException VOLUME_ALREADY_EXISTS =
+      new OzoneException(HTTP_CONFLICT, "volumeAlreadyExists",
+                         "Duplicate volume name.");
+
+  public static final OzoneException BUCKET_ALREADY_EXISTS =
+      new OzoneException(HTTP_CONFLICT, "bucketAlreadyExists",
+                         "Duplicate bucket name.");
+
+  public static final OzoneException VOLUME_NOT_EMPTY =
+      new OzoneException(HTTP_CONFLICT, "volumeNotEmpty",
+                         "Volume must not have any buckets.");
+
+  public static final OzoneException BUCKET_NOT_EMPTY =
+      new OzoneException(HTTP_CONFLICT, "bucketNotEmpty",
+                         "Bucket must not have any keys.");
+
+  public static final OzoneException KEY_OPERATION_CONFLICT =
+      new OzoneException(HTTP_CONFLICT, "keyOperationConflict",
+                         "Conflicting operation on the specified key is going" +
+                             " on.");
+
+  /* Error 500 */
+  public static final OzoneException SERVER_ERROR =
+      new OzoneException(HTTP_INTERNAL_ERROR, "internalServerError",
+                         "Internal server error.");
+
+  /**
+   * Create a new instance of Error.
+   *
+   * @param e Error Template
+   * @param requestID Request ID
+   * @param resource Resource Name
+   * @param hostID hostID
+   *
+   * @return creates a new instance of error based on the template
+   */
+  public static OzoneException newError(OzoneException e, long requestID,
+                                        String resource, String hostID) {
+    OzoneException err =
+        new OzoneException(e.getHttpCode(), e.getShortMessage(),
+                           e.getMessage());
+    err.setRequestId(Long.toString(requestID));
+    err.setResource(resource);
+    err.setHostID(hostID);
+    return err;
+  }
+
+  /**
+   * Create new instance of Error.
+   *
+   * @param e - Error Template
+   * @param args - Args
+   *
+   * @return Ozone Exception
+   */
+  public static OzoneException newError(OzoneException e, UserArgs args) {
+    OzoneException err =
+        new OzoneException(e.getHttpCode(), e.getShortMessage(),
+                           e.getMessage());
+    err.setRequestId(Long.toString(args.getRequestID()));
+    err.setResource(args.getResourceName());
+    err.setHostID(args.getHostName());
+    return err;
+  }
+
+  /**
+   * Create new instance of Error.
+   *
+   * @param e - Error Template
+   * @param args - Args
+   * @param ex Exception
+   *
+   * @return Ozone Exception
+   */
+  public static OzoneException newError(OzoneException e, UserArgs args,
+                                        Exception ex) {
+    OzoneException err =
+        new OzoneException(e.getHttpCode(), e.getShortMessage(), ex);
+    err.setRequestId(Long.toString(args.getRequestID()));
+    err.setResource(args.getResourceName());
+    err.setHostID(args.getHostName());
+    err.setMessage(ex.getMessage());
+    return err;
+  }
+
+  private ErrorTable() {
+    // Never constructed.
+  }
+}

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/ozone/web/exceptions/OzoneException.java

@@ -45,6 +45,21 @@ public class OzoneException extends Exception {
   private String hostID;
 
 
+  /**
+   * Constructor that allows a shortMessage and exception.
+   *
+   * @param httpCode Error Code
+   * @param shortMessage Short Message
+   * @param ex Exception
+   */
+  public OzoneException(long httpCode, String shortMessage, Exception ex) {
+    super(ex);
+    this.message = ex.getMessage();
+    this.shortMessage = shortMessage;
+    this.httpCode = httpCode;
+  }
+
+
   /**
    * Constructor that allows a shortMessage.
    *
@@ -68,7 +83,7 @@ public class OzoneException extends Exception {
     this.resource = message;
     this.httpCode = httpCode;
   }
- 
+
   /**
    * Returns the Resource that was involved in the exception.
    *
@@ -99,7 +114,7 @@ public class OzoneException extends Exception {
   /**
    * Sets the error message.
    *
-   * @param longMessage  - Long message
+   * @param longMessage - Long message
    */
   public void setMessage(String longMessage) {
     this.message = longMessage;