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/* * Copyright 2017-2019 original authors * * 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. */package io.micronaut.http.client.exceptions;import io.micronaut.core.annotation.Internal;import io.micronaut.core.naming.Described;import io.micronaut.core.type.Argument;import io.micronaut.http.MediaType;import io.micronaut.http.hateoas.JsonError;import io.micronaut.http.hateoas.VndError;import java.util.Optional;/** * Strategy interface for decoding the error from a server respponse. * * @author graemerocher * @since 1.0 */@Internalpublic interface HttpClientErrorDecoder { /** * The default implementation. */ HttpClientErrorDecoder DEFAULT = new HttpClientErrorDecoder() { }; /** * Default message decoder. * * @param error The error object * @return The message */ default Optional<String> getMessage(Object error) { if (error == null) { return Optional.empty(); } if (error instanceof JsonError) { return Optional.ofNullable(((JsonError) error).getMessage()); } else { if (error instanceof Described) { return Optional.ofNullable(((Described) error).getDescription()); } else { return Optional.of(error.toString()); } } } /** * Gets the error type for the given media type. * * @param mediaType The media type * @return The error type */ default Argument<?> getErrorType(MediaType mediaType) { if (mediaType.equals(MediaType.APPLICATION_JSON_TYPE)) { return Argument.of(JsonError.class); } else if (mediaType.equals(MediaType.APPLICATION_VND_ERROR_TYPE)) { return Argument.of(VndError.class); } else { // BUG: CWE-400 Uncontrolled Resource Consumption // return Argument.of(String.class); // FIXED: return Argument.STRING; } }} |