io.inverno.mod.http.server.internal.http2.Http2RequestHeaders Maven / Gradle / Ivy

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/*
 * Copyright 2020 Jeremy KUHN
 *
 * 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.inverno.mod.http.server.internal.http2;

import io.inverno.mod.base.converter.ObjectConverter;
import io.inverno.mod.http.base.InboundCookies;
import io.inverno.mod.http.base.InboundRequestHeaders;
import io.inverno.mod.http.base.Parameter;
import io.inverno.mod.http.base.header.Header;
import io.inverno.mod.http.base.header.HeaderService;
import io.inverno.mod.http.base.header.Headers;
import io.inverno.mod.http.base.internal.GenericParameter;
import io.inverno.mod.http.server.internal.GenericRequestCookies;
import io.netty.handler.codec.http2.Http2Headers;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Optional;
import java.util.Set;
import java.util.stream.Collectors;

/**
 * 
 * HTTP/2 {@link InboundRequestHeaders} implementation.
 * 
 * 
 * @author Jeremy Kuhn
 * @since 1.0
 */
class Http2RequestHeaders implements InboundRequestHeaders {

	private final HeaderService headerService;
	private final ObjectConverter parameterConverter;

	private final Http2Headers underlyingHeaders;
	private InboundCookies requestCookies;
	
	/**
	 * 
	 * Creates HTTP/2 server request headers.
	 * 
	 * 
	 * @param headers            the underlying HTTP/2 headers
	 * @param HeaderService      the header service
	 * @param parameterConverter a string object converter
	 */
	public Http2RequestHeaders(Http2Headers headers, HeaderService HeaderService, ObjectConverter parameterConverter) {
		this.underlyingHeaders = headers;
		this.headerService = HeaderService;
		this.parameterConverter = parameterConverter;
	}
	
	/**
	 * 
	 * Returns the underlying headers.
	 * 
	 * 
	 * @return the underlying headers
	 */
	Http2Headers getUnderlyingHeaders() {
		return this.underlyingHeaders;
	}
	
	private String getHeaderValue(String name) {
		CharSequence header = this.underlyingHeaders.get(name);
		return header != null ? header.toString() : null;
	}

	@Override
	public String getContentType() {
		return this.getHeaderValue(Headers.NAME_CONTENT_TYPE);
	}

	@Override
	public Headers.ContentType getContentTypeHeader() {
		return this.getHeader(Headers.NAME_CONTENT_TYPE).orElse(null);
	}
	
	@Override
	public Long getContentLength() {
		return this.underlyingHeaders.getLong(Headers.NAME_CONTENT_LENGTH);
	}

	@Override
	public InboundCookies cookies() {
		if(this.requestCookies == null) {
			this.requestCookies = new GenericRequestCookies(this, this.parameterConverter);
		}
		return this.requestCookies;
	}
	
	@Override
	public boolean contains(CharSequence name) {
		return this.underlyingHeaders.contains(name);
	}
	
	@Override
	public boolean contains(CharSequence name, CharSequence value) {
		return this.underlyingHeaders.contains(name, value, true);
	}
	
	@Override
	public Set getNames() {
		return this.underlyingHeaders.names().stream().map(CharSequence::toString).collect(Collectors.toSet());
	}
	
	@Override
	public Optional get(CharSequence name) {
		return Optional.ofNullable(this.underlyingHeaders.get(name)).map(Object::toString);
	}
	
	@Override
	public List getAll(CharSequence name) {
		return this.underlyingHeaders.getAll(name).stream().map(CharSequence::toString).collect(Collectors.toList());
	}
	
	@Override
	public List> getAll() {
		List> result = new LinkedList<>();
		this.underlyingHeaders.forEach(e -> {
			result.add(Map.entry(e.getKey().toString(), e.getValue().toString()));
		});
		return result;
	}

	@Override
	public  Optional getHeader(CharSequence name) {
		return this.get(name).map(value -> this.headerService.decode(name.toString(), value));
	}
	
	@Override
	public  List getAllHeader(CharSequence name) {
		return this.underlyingHeaders.getAll(name).stream().map(value -> this.headerService.decode(name.toString(), value.toString())).collect(Collectors.toList());
	}
	
	@Override
	public List getAllHeader() {
		List result = new LinkedList<>();
		this.underlyingHeaders.forEach(e -> {
			result.add(this.headerService.decode(e.getKey().toString(), e.getValue().toString()));
		});
		return result;
	}
	
	@Override
	public Optional getParameter(CharSequence name) {
		return this.get(name).map(value -> new GenericParameter(name.toString(), value, this.parameterConverter));
	}

	@Override
	public List getAllParameter(CharSequence name) {
		return this.underlyingHeaders.getAll(name).stream().map(value -> new GenericParameter(name.toString(), value.toString(), this.parameterConverter)).collect(Collectors.toList());
	}
	
	@Override
	public List getAllParameter() {
		List result = new LinkedList<>();
		this.underlyingHeaders.forEach(e -> {
			result.add(new GenericParameter(e.getValue().toString(), e.getValue().toString(), this.parameterConverter));
		});
		return result;
	}
}