io.micronaut.http.bind.binders.RequestAttributeAnnotationBinder Maven / Gradle / Ivy

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/*
 * Copyright 2017-2020 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
 *
 * https://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.bind.binders;

import io.micronaut.core.annotation.AnnotationMetadata;
import io.micronaut.core.bind.annotation.AbstractArgumentBinder;
import io.micronaut.core.convert.ArgumentConversionContext;
import io.micronaut.core.convert.ConversionService;
import io.micronaut.core.convert.value.MutableConvertibleValues;
import io.micronaut.core.naming.NameUtils;
import io.micronaut.core.type.Argument;
import io.micronaut.http.HttpRequest;
import io.micronaut.http.annotation.RequestAttribute;

/**
 * An {@link io.micronaut.core.bind.annotation.AnnotatedArgumentBinder} implementation that uses the {@link RequestAttribute}
 * annotation to trigger binding from an HTTP request attribute.
 * NOTE: The binder is annotating as postponed to allow injecting attributes added by filters.
 *
 * @param  A type
 * @author Ahmed Lafta
 * @see io.micronaut.http.HttpAttributes
 */
public class RequestAttributeAnnotationBinder extends AbstractArgumentBinder
    implements AnnotatedRequestArgumentBinder, PostponedRequestArgumentBinder {

    /**
     * @param conversionService conversionService
     */
    public RequestAttributeAnnotationBinder(ConversionService conversionService) {
        super(conversionService);
    }

    @Override
    public Class getAnnotationType() {
        return RequestAttribute.class;
    }

    @Override
    public BindingResult bind(ArgumentConversionContext argument, HttpRequest source) {
        MutableConvertibleValues