org.springframework.http.server.reactive.AbstractServerHttpRequest Maven / Gradle / Ivy
/*
* Copyright 2002-2022 the original author or 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 org.springframework.http.server.reactive;
import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.net.URLDecoder;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.springframework.http.HttpCookie;
import org.springframework.http.HttpHeaders;
import org.springframework.http.server.RequestPath;
import org.springframework.lang.Nullable;
import org.springframework.util.CollectionUtils;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.util.ObjectUtils;
import org.springframework.util.StringUtils;
/**
* Common base class for {@link ServerHttpRequest} implementations.
*
* @author Rossen Stoyanchev
* @since 5.0
*/
public abstract class AbstractServerHttpRequest implements ServerHttpRequest {
private static final Pattern QUERY_PATTERN = Pattern.compile("([^&=]+)(=?)([^&]+)?");
private final URI uri;
private final RequestPath path;
private final HttpHeaders headers;
@Nullable
private MultiValueMap queryParams;
@Nullable
private MultiValueMap cookies;
@Nullable
private SslInfo sslInfo;
@Nullable
private String id;
@Nullable
private String logPrefix;
/**
* Constructor with the URI and headers for the request.
* @param uri the URI for the request
* @param contextPath the context path for the request
* @param headers the headers for the request (as {@link MultiValueMap})
* @since 5.3
*/
public AbstractServerHttpRequest(URI uri, @Nullable String contextPath, MultiValueMap headers) {
this.uri = uri;
this.path = RequestPath.parse(uri, contextPath);
this.headers = HttpHeaders.readOnlyHttpHeaders(headers);
}
/**
* Constructor with the URI and headers for the request.
* @param uri the URI for the request
* @param contextPath the context path for the request
* @param headers the headers for the request (as {@link HttpHeaders})
*/
public AbstractServerHttpRequest(URI uri, @Nullable String contextPath, HttpHeaders headers) {
this.uri = uri;
this.path = RequestPath.parse(uri, contextPath);
this.headers = HttpHeaders.readOnlyHttpHeaders(headers);
}
@Override
public String getId() {
if (this.id == null) {
this.id = initId();
if (this.id == null) {
this.id = ObjectUtils.getIdentityHexString(this);
}
}
return this.id;
}
/**
* Obtain the request id to use, or {@code null} in which case the Object
* identity of this request instance is used.
* @since 5.1
*/
@Nullable
protected String initId() {
return null;
}
@Override
public URI getURI() {
return this.uri;
}
@Override
public RequestPath getPath() {
return this.path;
}
@Override
public HttpHeaders getHeaders() {
return this.headers;
}
@Override
public MultiValueMap getQueryParams() {
if (this.queryParams == null) {
this.queryParams = CollectionUtils.unmodifiableMultiValueMap(initQueryParams());
}
return this.queryParams;
}
/**
* A method for parsing of the query into name-value pairs. The return
* value is turned into an immutable map and cached.
* Note that this method is invoked lazily on first access to
* {@link #getQueryParams()}. The invocation is not synchronized but the
* parsing is thread-safe nevertheless.
*/
protected MultiValueMap initQueryParams() {
MultiValueMap queryParams = new LinkedMultiValueMap<>();
String query = getURI().getRawQuery();
if (query != null) {
Matcher matcher = QUERY_PATTERN.matcher(query);
while (matcher.find()) {
String name = decodeQueryParam(matcher.group(1));
String eq = matcher.group(2);
String value = matcher.group(3);
value = (value != null ? decodeQueryParam(value) : (StringUtils.hasLength(eq) ? "" : null));
queryParams.add(name, value);
}
}
return queryParams;
}
@SuppressWarnings("deprecation")
private String decodeQueryParam(String value) {
try {
return URLDecoder.decode(value, "UTF-8");
}
catch (UnsupportedEncodingException ex) {
// Should never happen but we got a platform default fallback anyway.
return URLDecoder.decode(value);
}
}
@Override
public MultiValueMap getCookies() {
if (this.cookies == null) {
this.cookies = CollectionUtils.unmodifiableMultiValueMap(initCookies());
}
return this.cookies;
}
/**
* Obtain the cookies from the underlying "native" request and adapt those to
* an {@link HttpCookie} map. The return value is turned into an immutable
* map and cached.
* Note that this method is invoked lazily on access to
* {@link #getCookies()}. Subclasses should synchronize cookie
* initialization if the underlying "native" request does not provide
* thread-safe access to cookie data.
*/
protected abstract MultiValueMap initCookies();
@Nullable
@Override
public SslInfo getSslInfo() {
if (this.sslInfo == null) {
this.sslInfo = initSslInfo();
}
return this.sslInfo;
}
/**
* Obtain SSL session information from the underlying "native" request.
* @return the session information, or {@code null} if none available
* @since 5.0.2
*/
@Nullable
protected abstract SslInfo initSslInfo();
/**
* Return the underlying server response.
* Note: This is exposed mainly for internal framework
* use such as WebSocket upgrades in the spring-webflux module.
*/
public abstract T getNativeRequest();
/**
* For internal use in logging at the HTTP adapter layer.
* @since 5.1
*/
String getLogPrefix() {
if (this.logPrefix == null) {
this.logPrefix = "[" + initLogPrefix() + "] ";
}
return this.logPrefix;
}
/**
* Subclasses can override this to provide the prefix to use for log messages.
* By default, this is {@link #getId()}.
* @since 5.3.15
*/
protected String initLogPrefix() {
return getId();
}
}