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/*
* Copyright 2016 LINE Corporation
*
* LINE Corporation 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:
*
* 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 com.linecorp.armeria.common;
import static com.linecorp.armeria.common.HttpHeaderNames.CONTENT_LENGTH;
import static com.linecorp.armeria.internal.ArmeriaHttpUtil.isContentAlwaysEmpty;
import static com.linecorp.armeria.internal.ArmeriaHttpUtil.isContentAlwaysEmptyWithValidation;
import static java.util.Objects.requireNonNull;
import java.nio.charset.StandardCharsets;
import java.util.Collections;
import java.util.Formatter;
import java.util.List;
import java.util.Locale;
import com.google.common.collect.ImmutableList;
/**
* A complete HTTP message whose content is readily available as a single {@link HttpData}. It can be an
* HTTP request or an HTTP response depending on what header values it contains. For example, having a
* {@link HttpHeaderNames#STATUS} header could mean it is an HTTP response.
*/
public interface AggregatedHttpMessage {
// Note: Ensure we provide the same set of `of()` methods with the `of()` methods of
// HttpRequest for consistency.
/**
* Creates a new HTTP request with empty content.
*
* @param method the HTTP method of the request
* @param path the path of the request
*/
static AggregatedHttpMessage of(HttpMethod method, String path) {
requireNonNull(method, "method");
requireNonNull(path, "path");
return of(HttpHeaders.of(method, path));
}
/**
* Creates a new HTTP request.
*
* @param method the HTTP method of the request
* @param path the path of the request
* @param mediaType the {@link MediaType} of the request content
* @param content the content of the request
*/
static AggregatedHttpMessage of(HttpMethod method, String path, MediaType mediaType, String content) {
requireNonNull(method, "method");
requireNonNull(path, "path");
requireNonNull(content, "content");
requireNonNull(mediaType, "mediaType");
return of(method, path,
mediaType, content.getBytes(mediaType.charset().orElse(StandardCharsets.UTF_8)));
}
/**
* Creates a new HTTP request. The content of the request is formatted by
* {@link String#format(Locale, String, Object...)} with {@linkplain Locale#ENGLISH English locale}.
*
* @param method the HTTP method of the request
* @param path the path of the request
* @param mediaType the {@link MediaType} of the request content
* @param format {@linkplain Formatter the format string} of the request content
* @param args the arguments referenced by the format specifiers in the format string
*/
static AggregatedHttpMessage of(HttpMethod method, String path, MediaType mediaType,
String format, Object... args) {
requireNonNull(method, "method");
requireNonNull(path, "path");
requireNonNull(mediaType, "mediaType");
requireNonNull(format, "format");
requireNonNull(args, "args");
return of(method,
path,
mediaType,
String.format(Locale.ENGLISH, format, args).getBytes(
mediaType.charset().orElse(StandardCharsets.UTF_8)));
}
/**
* Creates a new HTTP request.
*
* @param method the HTTP method of the request
* @param path the path of the request
* @param mediaType the {@link MediaType} of the request content
* @param content the content of the request
*/
static AggregatedHttpMessage of(HttpMethod method, String path, MediaType mediaType, byte[] content) {
requireNonNull(method, "method");
requireNonNull(path, "path");
requireNonNull(mediaType, "mediaType");
requireNonNull(content, "content");
return of(method, path, mediaType, HttpData.of(content));
}
/**
* Creates a new HTTP request.
*
* @param method the HTTP method of the request
* @param path the path of the request
* @param mediaType the {@link MediaType} of the request content
* @param content the content of the request
* @param offset the start offset of {@code content}
* @param length the length of {@code content}
*/
static AggregatedHttpMessage of(
HttpMethod method, String path, MediaType mediaType, byte[] content, int offset, int length) {
requireNonNull(method, "method");
requireNonNull(path, "path");
requireNonNull(mediaType, "mediaType");
requireNonNull(content, "content");
return of(method, path, mediaType, HttpData.of(content, offset, length));
}
/**
* Creates a new HTTP request.
*
* @param method the HTTP method of the request
* @param path the path of the request
* @param mediaType the {@link MediaType} of the request content
* @param content the content of the request
*/
static AggregatedHttpMessage of(HttpMethod method, String path, MediaType mediaType, HttpData content) {
requireNonNull(method, "method");
requireNonNull(path, "path");
requireNonNull(mediaType, "mediaType");
requireNonNull(content, "content");
return of(method, path, mediaType, content, HttpHeaders.EMPTY_HEADERS);
}
/**
* Creates a new HTTP request.
*
* @param method the HTTP method of the request
* @param path the path of the request
* @param mediaType the {@link MediaType} of the request content
* @param content the content of the request
* @param trailingHeaders the trailing HTTP headers
*/
static AggregatedHttpMessage of(HttpMethod method, String path, MediaType mediaType,
HttpData content, HttpHeaders trailingHeaders) {
requireNonNull(method, "method");
requireNonNull(path, "path");
requireNonNull(mediaType, "mediaType");
requireNonNull(content, "content");
requireNonNull(trailingHeaders, "trailingHeaders");
return of(HttpHeaders.of(method, path).contentType(mediaType), content, trailingHeaders);
}
// Note: Ensure we provide the same set of `of()` methods with the `of()` and `respond()` methods of
// HttpResponse and HttpResponseWriter for consistency.
/**
* Creates a new HTTP response.
*
* @param statusCode the HTTP status code
*/
static AggregatedHttpMessage of(int statusCode) {
return of(HttpStatus.valueOf(statusCode));
}
/**
* Creates a new HTTP response.
*
* @param status the HTTP status
*/
static AggregatedHttpMessage of(HttpStatus status) {
requireNonNull(status, "status");
if (isContentAlwaysEmpty(status)) {
return of(HttpHeaders.of(status));
} else {
return of(status, MediaType.PLAIN_TEXT_UTF_8, status.toHttpData());
}
}
/**
* Creates a new HTTP response of the specified {@link HttpStatus}.
*
* @param mediaType the {@link MediaType} of the response content
* @param content the content of the response
*/
static AggregatedHttpMessage of(HttpStatus status, MediaType mediaType, String content) {
requireNonNull(status, "status");
requireNonNull(mediaType, "mediaType");
requireNonNull(content, "content");
return of(status,
mediaType, content.getBytes(mediaType.charset().orElse(StandardCharsets.UTF_8)));
}
/**
* Creates a new HTTP response of the specified {@link HttpStatus}. The content of the response is
* formatted by {@link String#format(Locale, String, Object...)} with
* {@linkplain Locale#ENGLISH English locale}.
*
* @param mediaType the {@link MediaType} of the response content
* @param format {@linkplain Formatter the format string} of the response content
* @param args the arguments referenced by the format specifiers in the format string
*/
static AggregatedHttpMessage of(HttpStatus status, MediaType mediaType, String format, Object... args) {
requireNonNull(status, "status");
requireNonNull(mediaType, "mediaType");
requireNonNull(format, "format");
requireNonNull(args, "args");
return of(status,
mediaType,
String.format(Locale.ENGLISH, format, args).getBytes(
mediaType.charset().orElse(StandardCharsets.UTF_8)));
}
/**
* Creates a new HTTP response of the specified {@link HttpStatus}.
*
* @param mediaType the {@link MediaType} of the response content
* @param content the content of the response
*/
static AggregatedHttpMessage of(HttpStatus status, MediaType mediaType, byte[] content) {
requireNonNull(status, "status");
requireNonNull(mediaType, "mediaType");
requireNonNull(content, "content");
return of(status, mediaType, HttpData.of(content));
}
/**
* Creates a new HTTP response of the specified {@link HttpStatus}.
*
* @param mediaType the {@link MediaType} of the response content
* @param content the content of the response
* @param offset the start offset of {@code content}
* @param length the length of {@code content}
*/
static AggregatedHttpMessage of(
HttpStatus status, MediaType mediaType, byte[] content, int offset, int length) {
requireNonNull(status, "status");
requireNonNull(mediaType, "mediaType");
requireNonNull(content, "content");
return of(status, mediaType, HttpData.of(content, offset, length));
}
/**
* Creates a new HTTP response of the specified {@link HttpStatus}.
*
* @param mediaType the {@link MediaType} of the response content
* @param content the content of the response
*/
static AggregatedHttpMessage of(HttpStatus status, MediaType mediaType, HttpData content) {
requireNonNull(status, "status");
requireNonNull(mediaType, "mediaType");
requireNonNull(content, "content");
return of(status, mediaType, content, HttpHeaders.EMPTY_HEADERS);
}
/**
* Creates a new HTTP response of the specified {@link HttpStatus}.
*
* @param mediaType the {@link MediaType} of the response content
* @param content the content of the response
* @param trailingHeaders the trailing HTTP headers
*/
static AggregatedHttpMessage of(HttpStatus status, MediaType mediaType, HttpData content,
HttpHeaders trailingHeaders) {
requireNonNull(status, "status");
requireNonNull(mediaType, "mediaType");
requireNonNull(content, "content");
requireNonNull(trailingHeaders, "trailingHeaders");
final HttpHeaders headers =
HttpHeaders.of(status)
.contentType(mediaType)
.setInt(CONTENT_LENGTH, content.length());
return of(headers, content, trailingHeaders);
}
/**
* Creates a new HTTP message with empty content.
*
* @param headers the HTTP headers
*/
static AggregatedHttpMessage of(HttpHeaders headers) {
requireNonNull(headers, "headers");
return of(headers, HttpData.EMPTY_DATA, HttpHeaders.EMPTY_HEADERS);
}
/**
* Creates a new HTTP message.
*
* @param headers the HTTP headers
* @param content the content of the HTTP message
*/
static AggregatedHttpMessage of(HttpHeaders headers, HttpData content) {
requireNonNull(headers, "headers");
requireNonNull(content, "content");
return of(headers, content, HttpHeaders.EMPTY_HEADERS);
}
/**
* Creates a new HTTP message.
*
* @param headers the HTTP headers
* @param content the content of the HTTP message
* @param trailingHeaders the trailing HTTP headers
*/
static AggregatedHttpMessage of(HttpHeaders headers, HttpData content, HttpHeaders trailingHeaders) {
requireNonNull(headers, "headers");
requireNonNull(content, "content");
requireNonNull(trailingHeaders, "trailingHeaders");
return of(Collections.emptyList(), headers, content, trailingHeaders);
}
/**
* Creates a new HTTP message.
*
* @param informationals the informational class (1xx) HTTP headers
* @param headers the HTTP headers
* @param content the content of the HTTP message
* @param trailingHeaders the trailing HTTP headers
*/
static AggregatedHttpMessage of(Iterable informationals, HttpHeaders headers,
HttpData content, HttpHeaders trailingHeaders) {
requireNonNull(informationals, "informationals");
requireNonNull(headers, "headers");
requireNonNull(content, "content");
requireNonNull(trailingHeaders, "trailingHeaders");
// Set the 'content-length' header if possible.
final HttpStatus status = headers.status();
if (status != null) { // Response
if (!isContentAlwaysEmptyWithValidation(status, content, trailingHeaders) &&
!headers.contains(CONTENT_LENGTH)) {
// But do not overwrite the 'content-length' header because a response to a HEAD request
// will have no content even if it has non-zero content-length header.
headers.setInt(CONTENT_LENGTH, content.length());
}
} else { // Request
if (content.isEmpty()) {
headers.remove(CONTENT_LENGTH);
} else {
headers.setInt(CONTENT_LENGTH, content.length());
}
}
return new DefaultAggregatedHttpMessage(ImmutableList.copyOf(informationals),
headers, content, trailingHeaders);
}
/**
* Returns the informational class (1xx) HTTP headers.
*/
List informationals();
/**
* Returns the HTTP headers.
*/
HttpHeaders headers();
/**
* Returns the trailing HTTP headers.
*/
HttpHeaders trailingHeaders();
/**
* Returns the content of this message.
*/
HttpData content();
/**
* Returns the {@link HttpHeaderNames#SCHEME SCHEME} of this message.
*
* @return the scheme, or {@code null} if there's no such header
*/
default String scheme() {
return headers().scheme();
}
/**
* Returns the {@link HttpHeaderNames#METHOD METHOD} of this message.
*
* @return the method, or {@code null} if there's no such header
*/
default HttpMethod method() {
return headers().method();
}
/**
* Returns the {@link HttpHeaderNames#PATH PATH} of this message.
*
* @return the path, or {@code null} if there's no such header
*/
default String path() {
return headers().path();
}
/**
* Returns the {@link HttpHeaderNames#AUTHORITY AUTHORITY} of this message, in the form of
* {@code "hostname:port"}.
*
* @return the authority, or {@code null} if there's no such header
*/
default String authority() {
return headers().authority();
}
/**
* Returns the {@link HttpHeaderNames#STATUS STATUS} of this message.
*
* @return the status, or {@code null} if there's no such header
*/
default HttpStatus status() {
return headers().status();
}
/**
* Converts this message into a new complete {@link HttpRequest}.
*
* @deprecated Use {@link HttpRequest#of(AggregatedHttpMessage)}.
*/
@Deprecated
default HttpRequest toHttpRequest() {
return HttpRequest.of(this);
}
/**
* Converts this message into a new complete {@link HttpResponse}.
*
* @deprecated Use {@link HttpResponse#of(AggregatedHttpMessage)}.
*/
@Deprecated
default HttpResponse toHttpResponse() {
return HttpResponse.of(this);
}
}
