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/*
 * 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.gravitino.client;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.base.Joiner;
import java.util.List;
import java.util.function.Consumer;
import org.apache.gravitino.dto.responses.ErrorConstants;
import org.apache.gravitino.dto.responses.ErrorResponse;
import org.apache.gravitino.dto.responses.OAuth2ErrorResponse;
import org.apache.gravitino.exceptions.AlreadyExistsException;
import org.apache.gravitino.exceptions.BadRequestException;
import org.apache.gravitino.exceptions.CatalogAlreadyExistsException;
import org.apache.gravitino.exceptions.ConnectionFailedException;
import org.apache.gravitino.exceptions.FilesetAlreadyExistsException;
import org.apache.gravitino.exceptions.GroupAlreadyExistsException;
import org.apache.gravitino.exceptions.IllegalPrivilegeException;
import org.apache.gravitino.exceptions.MetalakeAlreadyExistsException;
import org.apache.gravitino.exceptions.NoSuchCatalogException;
import org.apache.gravitino.exceptions.NoSuchFilesetException;
import org.apache.gravitino.exceptions.NoSuchGroupException;
import org.apache.gravitino.exceptions.NoSuchMetadataObjectException;
import org.apache.gravitino.exceptions.NoSuchMetalakeException;
import org.apache.gravitino.exceptions.NoSuchPartitionException;
import org.apache.gravitino.exceptions.NoSuchRoleException;
import org.apache.gravitino.exceptions.NoSuchSchemaException;
import org.apache.gravitino.exceptions.NoSuchTableException;
import org.apache.gravitino.exceptions.NoSuchTagException;
import org.apache.gravitino.exceptions.NoSuchTopicException;
import org.apache.gravitino.exceptions.NoSuchUserException;
import org.apache.gravitino.exceptions.NonEmptySchemaException;
import org.apache.gravitino.exceptions.NotFoundException;
import org.apache.gravitino.exceptions.PartitionAlreadyExistsException;
import org.apache.gravitino.exceptions.RESTException;
import org.apache.gravitino.exceptions.RoleAlreadyExistsException;
import org.apache.gravitino.exceptions.SchemaAlreadyExistsException;
import org.apache.gravitino.exceptions.TableAlreadyExistsException;
import org.apache.gravitino.exceptions.TagAlreadyAssociatedException;
import org.apache.gravitino.exceptions.TagAlreadyExistsException;
import org.apache.gravitino.exceptions.TopicAlreadyExistsException;
import org.apache.gravitino.exceptions.UnauthorizedException;
import org.apache.gravitino.exceptions.UserAlreadyExistsException;

/**
 * Utility class providing error handling for REST requests and specific to Metalake errors.
 *
 * 

It also includes utility methods to format error messages and convert stack traces to strings. */ public class ErrorHandlers { /** * Creates an error handler specific to Metalake operations. * * @return A Consumer representing the Metalake error handler. */ public static Consumer metalakeErrorHandler() { return MetalakeErrorHandler.INSTANCE; } /** * Creates an error handler specific to Catalog operations. * * @return A Consumer representing the Catalog error handler. */ public static Consumer catalogErrorHandler() { return CatalogErrorHandler.INSTANCE; } /** * Creates an error handler specific to Schema operations. * * @return A Consumer representing the Schema error handler. */ public static Consumer schemaErrorHandler() { return SchemaErrorHandler.INSTANCE; } /** * Creates an error handler specific to Table operations. * * @return A Consumer representing the Table error handler. */ public static Consumer tableErrorHandler() { return TableErrorHandler.INSTANCE; } /** * Creates an error handler specific to Partition operations. * * @return A Consumer representing the Partition error handler. */ public static Consumer partitionErrorHandler() { return PartitionErrorHandler.INSTANCE; } /** * Creates a generic error handler for REST requests. * * @return A Consumer representing the generic REST error handler. */ public static Consumer restErrorHandler() { return RestErrorHandler.INSTANCE; } /** * Creates an error handler specific to OAuth2 requests. * * @return A Consumer representing the OAuth2 error handler. */ public static Consumer oauthErrorHandler() { return OAuthErrorHandler.INSTANCE; } /** * Creates an error handler specific to Fileset operations. * * @return A Consumer representing the Fileset error handler. */ public static Consumer filesetErrorHandler() { return FilesetErrorHandler.INSTANCE; } /** * Creates an error handler specific to Topic operations. * * @return A Consumer representing the Topic error handler. */ public static Consumer topicErrorHandler() { return TopicErrorHandler.INSTANCE; } /** * Creates an error handler specific to User operations. * * @return A Consumer representing the User error handler. */ public static Consumer userErrorHandler() { return UserErrorHandler.INSTANCE; } /** * Creates an error handler specific to Group operations. * * @return A Consumer representing the Group error handler. */ public static Consumer groupErrorHandler() { return GroupErrorHandler.INSTANCE; } /** * Creates an error handler specific to Role operations. * * @return A Consumer representing the Role error handler. */ public static Consumer roleErrorHandler() { return RoleErrorHandler.INSTANCE; } /** * Creates an error handler specific to permission operations. * * @return A Consumer representing the permission error handler. */ public static Consumer permissionOperationErrorHandler() { return PermissionOperationErrorHandler.INSTANCE; } /** * Creates an error handler specific to Tag operations. * * @return A Consumer representing the Tag error handler. */ public static Consumer tagErrorHandler() { return TagErrorHandler.INSTANCE; } /** * Creates an error handler specific to Owner operations. * * @return A Consumer representing the Owner error handler. */ public static Consumer ownerErrorHandler() { return OwnerErrorHandler.INSTANCE; } private ErrorHandlers() {} /** * Converts a list of stack trace elements to a formatted string with line breaks. * * @param stack The list of stack trace elements to be converted. * @return A formatted string representing the stack trace. */ private static String getStackString(List stack) { if (stack == null || stack.isEmpty()) { return ""; } else { Joiner eol = Joiner.on("\n"); return eol.join(stack); } } /** * Formats the error message along with the stack trace, if available. * * @param errorResponse The ErrorResponse object containing the error message and stack trace. * @return A formatted error message string. */ private static String formatErrorMessage(ErrorResponse errorResponse) { String message = errorResponse.getMessage(); String stack = getStackString(errorResponse.getStack()); if (stack.isEmpty()) { return message; } else { return String.format("%s%n%s", message, stack); } } /** Error handler specific to Partition operations. */ @SuppressWarnings("FormatStringAnnotation") private static class PartitionErrorHandler extends RestErrorHandler { private static final ErrorHandler INSTANCE = new PartitionErrorHandler(); @Override public void accept(ErrorResponse errorResponse) { String errorMessage = formatErrorMessage(errorResponse); switch (errorResponse.getCode()) { case ErrorConstants.ILLEGAL_ARGUMENTS_CODE: throw new IllegalArgumentException(errorMessage); case ErrorConstants.NOT_FOUND_CODE: if (errorResponse.getType().equals(NoSuchSchemaException.class.getSimpleName())) { throw new NoSuchSchemaException(errorMessage); } else if (errorResponse.getType().equals(NoSuchTableException.class.getSimpleName())) { throw new NoSuchTableException(errorMessage); } else if (errorResponse .getType() .equals(NoSuchPartitionException.class.getSimpleName())) { throw new NoSuchPartitionException(errorMessage); } else { throw new NotFoundException(errorMessage); } case ErrorConstants.ALREADY_EXISTS_CODE: throw new PartitionAlreadyExistsException(errorMessage); case ErrorConstants.INTERNAL_ERROR_CODE: throw new RuntimeException(errorMessage); case ErrorConstants.UNSUPPORTED_OPERATION_CODE: throw new UnsupportedOperationException(errorMessage); default: super.accept(errorResponse); } } } /** Error handler specific to Table operations. */ @SuppressWarnings("FormatStringAnnotation") private static class TableErrorHandler extends RestErrorHandler { private static final ErrorHandler INSTANCE = new TableErrorHandler(); @Override public void accept(ErrorResponse errorResponse) { String errorMessage = formatErrorMessage(errorResponse); switch (errorResponse.getCode()) { case ErrorConstants.ILLEGAL_ARGUMENTS_CODE: throw new IllegalArgumentException(errorMessage); case ErrorConstants.NOT_FOUND_CODE: if (errorResponse.getType().equals(NoSuchSchemaException.class.getSimpleName())) { throw new NoSuchSchemaException(errorMessage); } else if (errorResponse.getType().equals(NoSuchTableException.class.getSimpleName())) { throw new NoSuchTableException(errorMessage); } else { throw new NotFoundException(errorMessage); } case ErrorConstants.ALREADY_EXISTS_CODE: throw new TableAlreadyExistsException(errorMessage); case ErrorConstants.INTERNAL_ERROR_CODE: throw new RuntimeException(errorMessage); case ErrorConstants.UNSUPPORTED_OPERATION_CODE: throw new UnsupportedOperationException(errorMessage); default: super.accept(errorResponse); } } } /** Error handler specific to Schema operations. */ @SuppressWarnings("FormatStringAnnotation") private static class SchemaErrorHandler extends RestErrorHandler { private static final ErrorHandler INSTANCE = new SchemaErrorHandler(); @Override public void accept(ErrorResponse errorResponse) { String errorMessage = formatErrorMessage(errorResponse); switch (errorResponse.getCode()) { case ErrorConstants.ILLEGAL_ARGUMENTS_CODE: throw new IllegalArgumentException(errorMessage); case ErrorConstants.NOT_FOUND_CODE: if (errorResponse.getType().equals(NoSuchCatalogException.class.getSimpleName())) { throw new NoSuchCatalogException(errorMessage); } else if (errorResponse.getType().equals(NoSuchSchemaException.class.getSimpleName())) { throw new NoSuchSchemaException(errorMessage); } else { throw new NotFoundException(errorMessage); } case ErrorConstants.ALREADY_EXISTS_CODE: throw new SchemaAlreadyExistsException(errorMessage); case ErrorConstants.NON_EMPTY_CODE: throw new NonEmptySchemaException(errorMessage); case ErrorConstants.UNSUPPORTED_OPERATION_CODE: throw new UnsupportedOperationException(errorMessage); case ErrorConstants.INTERNAL_ERROR_CODE: throw new RuntimeException(errorMessage); default: super.accept(errorResponse); } } } /** Error handler specific to Catalog operations. */ @SuppressWarnings("FormatStringAnnotation") private static class CatalogErrorHandler extends RestErrorHandler { private static final ErrorHandler INSTANCE = new CatalogErrorHandler(); @Override public void accept(ErrorResponse errorResponse) { String errorMessage = formatErrorMessage(errorResponse); switch (errorResponse.getCode()) { case ErrorConstants.ILLEGAL_ARGUMENTS_CODE: throw new IllegalArgumentException(errorMessage); case ErrorConstants.CONNECTION_FAILED_CODE: throw new ConnectionFailedException(errorMessage); case ErrorConstants.NOT_FOUND_CODE: if (errorResponse.getType().equals(NoSuchMetalakeException.class.getSimpleName())) { throw new NoSuchMetalakeException(errorMessage); } else if (errorResponse.getType().equals(NoSuchCatalogException.class.getSimpleName())) { throw new NoSuchCatalogException(errorMessage); } else { throw new NotFoundException(errorMessage); } case ErrorConstants.ALREADY_EXISTS_CODE: throw new CatalogAlreadyExistsException(errorMessage); case ErrorConstants.INTERNAL_ERROR_CODE: throw new RuntimeException(errorMessage); default: super.accept(errorResponse); } } } /** Error handler specific to Metalake operations. */ @SuppressWarnings("FormatStringAnnotation") private static class MetalakeErrorHandler extends RestErrorHandler { private static final ErrorHandler INSTANCE = new MetalakeErrorHandler(); @Override public void accept(ErrorResponse errorResponse) { String errorMessage = formatErrorMessage(errorResponse); switch (errorResponse.getCode()) { case ErrorConstants.ILLEGAL_ARGUMENTS_CODE: throw new IllegalArgumentException(errorMessage); case ErrorConstants.NOT_FOUND_CODE: throw new NoSuchMetalakeException(errorMessage); case ErrorConstants.ALREADY_EXISTS_CODE: throw new MetalakeAlreadyExistsException(errorMessage); case ErrorConstants.INTERNAL_ERROR_CODE: throw new RuntimeException(errorMessage); default: super.accept(errorResponse); } } } /** * Error handler specific to OAuth2 requests. */ public static class OAuthErrorHandler extends RestErrorHandler { private static final ErrorHandler INSTANCE = new OAuthErrorHandler(); /** * Parses the error response from the server. * * @param code The response code indicating the error status. * @param json The JSON data representing the error response. * @param mapper The ObjectMapper used to deserialize the JSON data. * @return An ErrorResponse object representing the error response. */ @Override public ErrorResponse parseResponse(int code, String json, ObjectMapper mapper) { try { OAuth2ErrorResponse response = mapper.readValue(json, OAuth2ErrorResponse.class); return ErrorResponse.oauthError(code, response.getType(), response.getMessage()); } catch (Exception e) { String errorMsg = String.format( "Error code: %d, error message: %s, json string: %s", code, e.getMessage(), json); return ErrorResponse.unknownError(errorMsg); } } /** * Accepts the error response and throws an exception based on the error type. * * @param errorResponse the input argument */ @Override public void accept(ErrorResponse errorResponse) { if (errorResponse.getType() != null) { switch (errorResponse.getType()) { case OAuth2ClientUtil.INVALID_CLIENT_ERROR: throw new UnauthorizedException( "Not authorized: %s: %s", errorResponse.getType(), errorResponse.getMessage()); case OAuth2ClientUtil.INVALID_REQUEST_ERROR: case OAuth2ClientUtil.INVALID_GRANT_ERROR: case OAuth2ClientUtil.UNAUTHORIZED_CLIENT_ERROR: case OAuth2ClientUtil.UNSUPPORTED_GRANT_TYPE_ERROR: case OAuth2ClientUtil.INVALID_SCOPE_ERROR: throw new BadRequestException( "Malformed request: %s: %s", errorResponse.getType(), errorResponse.getMessage()); default: super.accept(errorResponse); } } super.accept(errorResponse); } } /** Error handler specific to Fileset operations. */ @SuppressWarnings("FormatStringAnnotation") private static class FilesetErrorHandler extends RestErrorHandler { private static final FilesetErrorHandler INSTANCE = new FilesetErrorHandler(); @Override public void accept(ErrorResponse errorResponse) { String errorMessage = formatErrorMessage(errorResponse); switch (errorResponse.getCode()) { case ErrorConstants.ILLEGAL_ARGUMENTS_CODE: throw new IllegalArgumentException(errorMessage); case ErrorConstants.NOT_FOUND_CODE: if (errorResponse.getType().equals(NoSuchSchemaException.class.getSimpleName())) { throw new NoSuchSchemaException(errorMessage); } else if (errorResponse.getType().equals(NoSuchFilesetException.class.getSimpleName())) { throw new NoSuchFilesetException(errorMessage); } else { throw new NotFoundException(errorMessage); } case ErrorConstants.ALREADY_EXISTS_CODE: throw new FilesetAlreadyExistsException(errorMessage); case ErrorConstants.INTERNAL_ERROR_CODE: throw new RuntimeException(errorMessage); default: super.accept(errorResponse); } } } /** Error handler specific to Topic operations. */ @SuppressWarnings("FormatStringAnnotation") private static class TopicErrorHandler extends RestErrorHandler { private static final TopicErrorHandler INSTANCE = new TopicErrorHandler(); @Override public void accept(ErrorResponse errorResponse) { String errorMessage = formatErrorMessage(errorResponse); switch (errorResponse.getCode()) { case ErrorConstants.ILLEGAL_ARGUMENTS_CODE: throw new IllegalArgumentException(errorMessage); case ErrorConstants.NOT_FOUND_CODE: if (errorResponse.getType().equals(NoSuchSchemaException.class.getSimpleName())) { throw new NoSuchSchemaException(errorMessage); } else if (errorResponse.getType().equals(NoSuchTopicException.class.getSimpleName())) { throw new NoSuchTopicException(errorMessage); } else { throw new NotFoundException(errorMessage); } case ErrorConstants.ALREADY_EXISTS_CODE: throw new TopicAlreadyExistsException(errorMessage); case ErrorConstants.INTERNAL_ERROR_CODE: throw new RuntimeException(errorMessage); default: super.accept(errorResponse); } } } /** Error handler specific to User operations. */ @SuppressWarnings("FormatStringAnnotation") private static class UserErrorHandler extends RestErrorHandler { private static final UserErrorHandler INSTANCE = new UserErrorHandler(); @Override public void accept(ErrorResponse errorResponse) { String errorMessage = formatErrorMessage(errorResponse); switch (errorResponse.getCode()) { case ErrorConstants.ILLEGAL_ARGUMENTS_CODE: throw new IllegalArgumentException(errorMessage); case ErrorConstants.NOT_FOUND_CODE: if (errorResponse.getType().equals(NoSuchMetalakeException.class.getSimpleName())) { throw new NoSuchMetalakeException(errorMessage); } else if (errorResponse.getType().equals(NoSuchUserException.class.getSimpleName())) { throw new NoSuchUserException(errorMessage); } else { throw new NotFoundException(errorMessage); } case ErrorConstants.ALREADY_EXISTS_CODE: throw new UserAlreadyExistsException(errorMessage); case ErrorConstants.UNSUPPORTED_OPERATION_CODE: throw new UnsupportedOperationException(errorMessage); case ErrorConstants.INTERNAL_ERROR_CODE: throw new RuntimeException(errorMessage); default: super.accept(errorResponse); } } } /** Error handler specific to Group operations. */ @SuppressWarnings("FormatStringAnnotation") private static class GroupErrorHandler extends RestErrorHandler { private static final GroupErrorHandler INSTANCE = new GroupErrorHandler(); @Override public void accept(ErrorResponse errorResponse) { String errorMessage = formatErrorMessage(errorResponse); switch (errorResponse.getCode()) { case ErrorConstants.ILLEGAL_ARGUMENTS_CODE: throw new IllegalArgumentException(errorMessage); case ErrorConstants.NOT_FOUND_CODE: if (errorResponse.getType().equals(NoSuchMetalakeException.class.getSimpleName())) { throw new NoSuchMetalakeException(errorMessage); } else if (errorResponse.getType().equals(NoSuchGroupException.class.getSimpleName())) { throw new NoSuchGroupException(errorMessage); } else { throw new NotFoundException(errorMessage); } case ErrorConstants.ALREADY_EXISTS_CODE: throw new GroupAlreadyExistsException(errorMessage); case ErrorConstants.UNSUPPORTED_OPERATION_CODE: throw new UnsupportedOperationException(errorMessage); case ErrorConstants.INTERNAL_ERROR_CODE: throw new RuntimeException(errorMessage); default: super.accept(errorResponse); } } } /** Error handler specific to Role operations. */ @SuppressWarnings("FormatStringAnnotation") private static class RoleErrorHandler extends RestErrorHandler { private static final RoleErrorHandler INSTANCE = new RoleErrorHandler(); @Override public void accept(ErrorResponse errorResponse) { String errorMessage = formatErrorMessage(errorResponse); switch (errorResponse.getCode()) { case ErrorConstants.ILLEGAL_ARGUMENTS_CODE: if (errorResponse.getType().equals(IllegalPrivilegeException.class.getSimpleName())) { throw new IllegalPrivilegeException(errorMessage); } else { throw new IllegalArgumentException(errorMessage); } case ErrorConstants.NOT_FOUND_CODE: if (errorResponse.getType().equals(NoSuchMetalakeException.class.getSimpleName())) { throw new NoSuchMetalakeException(errorMessage); } else if (errorResponse.getType().equals(NoSuchRoleException.class.getSimpleName())) { throw new NoSuchRoleException(errorMessage); } else if (errorResponse .getType() .equals(NoSuchMetadataObjectException.class.getSimpleName())) { throw new NoSuchMetadataObjectException(errorMessage); } else { throw new NotFoundException(errorMessage); } case ErrorConstants.ALREADY_EXISTS_CODE: throw new RoleAlreadyExistsException(errorMessage); case ErrorConstants.UNSUPPORTED_OPERATION_CODE: throw new UnsupportedOperationException(errorMessage); case ErrorConstants.INTERNAL_ERROR_CODE: throw new RuntimeException(errorMessage); default: super.accept(errorResponse); } } } /** Error handler specific to Permission operations. */ @SuppressWarnings("FormatStringAnnotation") private static class PermissionOperationErrorHandler extends RestErrorHandler { private static final PermissionOperationErrorHandler INSTANCE = new PermissionOperationErrorHandler(); @Override public void accept(ErrorResponse errorResponse) { String errorMessage = formatErrorMessage(errorResponse); switch (errorResponse.getCode()) { case ErrorConstants.ILLEGAL_ARGUMENTS_CODE: if (errorResponse.getType().equals(IllegalPrivilegeException.class.getSimpleName())) { throw new IllegalPrivilegeException(errorMessage); } else { throw new IllegalArgumentException(errorMessage); } case ErrorConstants.NOT_FOUND_CODE: if (errorResponse.getType().equals(NoSuchMetalakeException.class.getSimpleName())) { throw new NoSuchMetalakeException(errorMessage); } else if (errorResponse.getType().equals(NoSuchUserException.class.getSimpleName())) { throw new NoSuchUserException(errorMessage); } else if (errorResponse.getType().equals(NoSuchGroupException.class.getSimpleName())) { throw new NoSuchGroupException(errorMessage); } else if (errorResponse.getType().equals(NoSuchRoleException.class.getSimpleName())) { throw new NoSuchRoleException(errorMessage); } else if (errorResponse .getType() .equals(NoSuchMetadataObjectException.class.getSimpleName())) { throw new NoSuchMetadataObjectException(errorMessage); } else { throw new NotFoundException(errorMessage); } case ErrorConstants.UNSUPPORTED_OPERATION_CODE: throw new UnsupportedOperationException(errorMessage); case ErrorConstants.INTERNAL_ERROR_CODE: throw new RuntimeException(errorMessage); default: super.accept(errorResponse); } } } /** Error handler specific to Tag operations. */ @SuppressWarnings("FormatStringAnnotation") private static class TagErrorHandler extends RestErrorHandler { private static final TagErrorHandler INSTANCE = new TagErrorHandler(); @Override public void accept(ErrorResponse errorResponse) { String errorMessage = formatErrorMessage(errorResponse); switch (errorResponse.getCode()) { case ErrorConstants.ILLEGAL_ARGUMENTS_CODE: throw new IllegalArgumentException(errorMessage); case ErrorConstants.NOT_FOUND_CODE: if (errorResponse.getType().equals(NoSuchMetalakeException.class.getSimpleName())) { throw new NoSuchMetalakeException(errorMessage); } else if (errorResponse.getType().equals(NoSuchTagException.class.getSimpleName())) { throw new NoSuchTagException(errorMessage); } else { throw new NotFoundException(errorMessage); } case ErrorConstants.ALREADY_EXISTS_CODE: if (errorResponse.getType().equals(TagAlreadyExistsException.class.getSimpleName())) { throw new TagAlreadyExistsException(errorMessage); } else if (errorResponse .getType() .equals(TagAlreadyAssociatedException.class.getSimpleName())) { throw new TagAlreadyAssociatedException(errorMessage); } else { throw new AlreadyExistsException(errorMessage); } case ErrorConstants.INTERNAL_ERROR_CODE: throw new RuntimeException(errorMessage); default: super.accept(errorResponse); } } } /** Error handler specific to Owner operations. */ @SuppressWarnings("FormatStringAnnotation") private static class OwnerErrorHandler extends RestErrorHandler { private static final OwnerErrorHandler INSTANCE = new OwnerErrorHandler(); @Override public void accept(ErrorResponse errorResponse) { String errorMessage = formatErrorMessage(errorResponse); switch (errorResponse.getCode()) { case ErrorConstants.ILLEGAL_ARGUMENTS_CODE: throw new IllegalArgumentException(errorMessage); case ErrorConstants.NOT_FOUND_CODE: if (errorResponse.getType().equals(NoSuchMetadataObjectException.class.getSimpleName())) { throw new NoSuchMetadataObjectException(errorMessage); } else { throw new NotFoundException(errorMessage); } case ErrorConstants.UNSUPPORTED_OPERATION_CODE: throw new UnsupportedOperationException(errorMessage); case ErrorConstants.INTERNAL_ERROR_CODE: throw new RuntimeException(errorMessage); default: super.accept(errorResponse); } } } /** Generic error handler for REST requests. */ private static class RestErrorHandler extends ErrorHandler { private static final ErrorHandler INSTANCE = new RestErrorHandler(); @Override public ErrorResponse parseResponse(int code, String json, ObjectMapper mapper) { try { return mapper.readValue(json, ErrorResponse.class); } catch (Exception e) { String errorMsg = String.format( "Error code: %d, error message: %s, json string: %s", code, e.getMessage(), json); return ErrorResponse.unknownError(errorMsg); } } @Override public void accept(ErrorResponse errorResponse) { throw new RESTException("Unable to process: %s", formatErrorMessage(errorResponse)); } } }





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