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The Async Http Client (AHC) classes.
/*
* Copyright 2010-2013 Ning, Inc.
*
* Ning 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:
*
* 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 org.asynchttpclient;
import static org.asynchttpclient.util.HttpUtils.*;
import static org.asynchttpclient.util.MiscUtils.isNonEmpty;
import io.netty.handler.codec.http.DefaultHttpHeaders;
import io.netty.handler.codec.http.HttpHeaders;
import io.netty.resolver.DefaultNameResolver;
import io.netty.resolver.NameResolver;
import io.netty.util.concurrent.ImmediateEventExecutor;
import java.io.File;
import java.io.InputStream;
import java.net.InetAddress;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import org.asynchttpclient.channel.ChannelPoolPartitioning;
import org.asynchttpclient.cookie.Cookie;
import org.asynchttpclient.proxy.ProxyServer;
import org.asynchttpclient.request.body.generator.BodyGenerator;
import org.asynchttpclient.request.body.generator.ReactiveStreamsBodyGenerator;
import org.asynchttpclient.request.body.multipart.Part;
import org.asynchttpclient.uri.Uri;
import org.asynchttpclient.util.UriEncoder;
import org.reactivestreams.Publisher;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Builder for {@link Request}
*
* @param the builder type
*/
public abstract class RequestBuilderBase> {
public static NameResolver DEFAULT_NAME_RESOLVER = new DefaultNameResolver(ImmediateEventExecutor.INSTANCE);
private final static Logger LOGGER = LoggerFactory.getLogger(RequestBuilderBase.class);
private static final Uri DEFAULT_REQUEST_URL = Uri.create("http://localhost");
// builder only fields
protected UriEncoder uriEncoder;
protected List queryParams;
protected SignatureCalculator signatureCalculator;
// request fields
protected String method;
protected Uri uri;
protected InetAddress address;
protected InetAddress localAddress;
protected HttpHeaders headers;
protected ArrayList cookies;
protected byte[] byteData;
protected List compositeByteData;
protected String stringData;
protected ByteBuffer byteBufferData;
protected InputStream streamData;
protected BodyGenerator bodyGenerator;
protected List formParams;
protected List bodyParts;
protected String virtualHost;
protected long contentLength = -1;
protected ProxyServer proxyServer;
protected Realm realm;
protected File file;
protected Boolean followRedirect;
protected int requestTimeout;
protected long rangeOffset;
protected Charset charset;
protected ChannelPoolPartitioning channelPoolPartitioning = ChannelPoolPartitioning.PerHostChannelPoolPartitioning.INSTANCE;
protected NameResolver nameResolver = DEFAULT_NAME_RESOLVER;
protected RequestBuilderBase(String method, boolean disableUrlEncoding) {
this(method, disableUrlEncoding, true);
}
protected RequestBuilderBase(String method, boolean disableUrlEncoding, boolean validateHeaders) {
this.method = method;
this.uriEncoder = UriEncoder.uriEncoder(disableUrlEncoding);
this.headers = new DefaultHttpHeaders(validateHeaders);
}
protected RequestBuilderBase(Request prototype) {
this(prototype, false, false);
}
protected RequestBuilderBase(Request prototype, boolean disableUrlEncoding, boolean validateHeaders) {
this.method = prototype.getMethod();
this.uriEncoder = UriEncoder.uriEncoder(disableUrlEncoding);
this.uri = prototype.getUri();
this.address = prototype.getAddress();
this.localAddress = prototype.getLocalAddress();
this.headers = new DefaultHttpHeaders(validateHeaders);
this.headers.add(prototype.getHeaders());
if (isNonEmpty(prototype.getCookies())) {
this.cookies = new ArrayList<>(prototype.getCookies());
}
this.byteData = prototype.getByteData();
this.compositeByteData = prototype.getCompositeByteData();
this.stringData = prototype.getStringData();
this.byteBufferData = prototype.getByteBufferData();
this.streamData = prototype.getStreamData();
this.bodyGenerator = prototype.getBodyGenerator();
if (isNonEmpty(prototype.getFormParams())) {
this.formParams = new ArrayList<>(prototype.getFormParams());
}
if (isNonEmpty(prototype.getBodyParts())) {
this.bodyParts = new ArrayList<>(prototype.getBodyParts());
}
this.virtualHost = prototype.getVirtualHost();
this.contentLength = prototype.getContentLength();
this.proxyServer = prototype.getProxyServer();
this.realm = prototype.getRealm();
this.file = prototype.getFile();
this.followRedirect = prototype.getFollowRedirect();
this.requestTimeout = prototype.getRequestTimeout();
this.rangeOffset = prototype.getRangeOffset();
this.charset = prototype.getCharset();
this.channelPoolPartitioning = prototype.getChannelPoolPartitioning();
this.nameResolver = prototype.getNameResolver();
}
@SuppressWarnings("unchecked")
private T asDerivedType() {
return (T) this;
}
public T setUrl(String url) {
return setUri(Uri.create(url));
}
public T setUri(Uri uri) {
this.uri = uri;
return asDerivedType();
}
public T setAddress(InetAddress address) {
this.address = address;
return asDerivedType();
}
public T setLocalAddress(InetAddress address) {
this.localAddress = address;
return asDerivedType();
}
public T setVirtualHost(String virtualHost) {
this.virtualHost = virtualHost;
return asDerivedType();
}
public T setHeader(CharSequence name, String value) {
this.headers.set(name, value);
return asDerivedType();
}
public T addHeader(CharSequence name, String value) {
if (value == null) {
LOGGER.warn("Value was null, set to \"\"");
value = "";
}
this.headers.add(name, value);
return asDerivedType();
}
public T setHeaders(HttpHeaders headers) {
if (headers == null)
this.headers.clear();
else
this.headers = headers;
return asDerivedType();
}
public T setHeaders(Map> headers) {
this.headers.clear();
if (headers != null) {
for (Map.Entry> entry : headers.entrySet()) {
String headerName = entry.getKey();
this.headers.add(headerName, entry.getValue());
}
}
return asDerivedType();
}
public T setContentLength(int contentLength) {
this.contentLength = contentLength;
return asDerivedType();
}
private void lazyInitCookies() {
if (this.cookies == null)
this.cookies = new ArrayList<>(3);
}
public T setCookies(Collection cookies) {
this.cookies = new ArrayList<>(cookies);
return asDerivedType();
}
public T addCookie(Cookie cookie) {
lazyInitCookies();
this.cookies.add(cookie);
return asDerivedType();
}
public T addOrReplaceCookie(Cookie cookie) {
String cookieKey = cookie.getName();
boolean replace = false;
int index = 0;
lazyInitCookies();
for (Cookie c : this.cookies) {
if (c.getName().equals(cookieKey)) {
replace = true;
break;
}
index++;
}
if (replace)
this.cookies.set(index, cookie);
else
this.cookies.add(cookie);
return asDerivedType();
}
public void resetCookies() {
if (this.cookies != null)
this.cookies.clear();
}
public void resetQuery() {
queryParams = null;
if (this.uri != null)
this.uri = this.uri.withNewQuery(null);
}
public void resetFormParams() {
this.formParams = null;
}
public void resetNonMultipartData() {
this.byteData = null;
this.compositeByteData = null;
this.byteBufferData = null;
this.stringData = null;
this.streamData = null;
this.bodyGenerator = null;
this.contentLength = -1;
}
public void resetMultipartData() {
this.bodyParts = null;
}
public T setBody(File file) {
this.file = file;
return asDerivedType();
}
private void resetBody() {
resetFormParams();
resetNonMultipartData();
resetMultipartData();
}
public T setBody(byte[] data) {
resetBody();
this.byteData = data;
return asDerivedType();
}
public T setBody(List data) {
resetBody();
this.compositeByteData = data;
return asDerivedType();
}
public T setBody(String data) {
resetBody();
this.stringData = data;
return asDerivedType();
}
public T setBody(ByteBuffer data) {
resetBody();
this.byteBufferData = data;
return asDerivedType();
}
public T setBody(InputStream stream) {
resetBody();
this.streamData = stream;
return asDerivedType();
}
public T setBody(Publisher publisher) {
return setBody(new ReactiveStreamsBodyGenerator(publisher));
}
public T setBody(BodyGenerator bodyGenerator) {
this.bodyGenerator = bodyGenerator;
return asDerivedType();
}
public T addQueryParam(String name, String value) {
if (queryParams == null)
queryParams = new ArrayList<>(1);
queryParams.add(new Param(name, value));
return asDerivedType();
}
public T addQueryParams(List params) {
if (queryParams == null)
queryParams = params;
else
queryParams.addAll(params);
return asDerivedType();
}
public T setQueryParams(Map> map) {
return setQueryParams(Param.map2ParamList(map));
}
public T setQueryParams(List params) {
// reset existing query
if (this.uri != null && isNonEmpty(this.uri.getQuery()))
this.uri = this.uri.withNewQuery(null);
queryParams = params;
return asDerivedType();
}
public T addFormParam(String name, String value) {
resetNonMultipartData();
resetMultipartData();
if (this.formParams == null)
this.formParams = new ArrayList<>(1);
this.formParams.add(new Param(name, value));
return asDerivedType();
}
public T setFormParams(Map> map) {
return setFormParams(Param.map2ParamList(map));
}
public T setFormParams(List params) {
resetNonMultipartData();
resetMultipartData();
this.formParams = params;
return asDerivedType();
}
public T addBodyPart(Part bodyPart) {
resetFormParams();
resetNonMultipartData();
if (this.bodyParts == null)
this.bodyParts = new ArrayList<>();
this.bodyParts.add(bodyPart);
return asDerivedType();
}
public T setBodyParts(List bodyParts) {
this.bodyParts = new ArrayList<>(bodyParts);
return asDerivedType();
}
public T setProxyServer(ProxyServer proxyServer) {
this.proxyServer = proxyServer;
return asDerivedType();
}
public T setProxyServer(ProxyServer.Builder proxyServerBuilder) {
this.proxyServer = proxyServerBuilder.build();
return asDerivedType();
}
public T setRealm(Realm realm) {
this.realm = realm;
return asDerivedType();
}
public T setFollowRedirect(boolean followRedirect) {
this.followRedirect = followRedirect;
return asDerivedType();
}
public T setRequestTimeout(int requestTimeout) {
this.requestTimeout = requestTimeout;
return asDerivedType();
}
public T setRangeOffset(long rangeOffset) {
this.rangeOffset = rangeOffset;
return asDerivedType();
}
public T setMethod(String method) {
this.method = method;
return asDerivedType();
}
public T setCharset(Charset charset) {
this.charset = charset;
return asDerivedType();
}
public T setChannelPoolPartitioning(ChannelPoolPartitioning channelPoolPartitioning) {
this.channelPoolPartitioning = channelPoolPartitioning;
return asDerivedType();
}
public T setNameResolver(NameResolver nameResolver) {
this.nameResolver = nameResolver;
return asDerivedType();
}
public T setSignatureCalculator(SignatureCalculator signatureCalculator) {
this.signatureCalculator = signatureCalculator;
return asDerivedType();
}
private RequestBuilderBase executeSignatureCalculator() {
if (signatureCalculator == null)
return this;
// build a first version of the request, without signatureCalculator in play
RequestBuilder rb = new RequestBuilder(this.method);
// make copy of mutable collections so we don't risk affecting
// original RequestBuilder
// call setFormParams first as it resets other fields
if (this.formParams != null)
rb.setFormParams(this.formParams);
if (this.headers != null)
rb.headers.add(this.headers);
if (this.cookies != null)
rb.setCookies(this.cookies);
if (this.bodyParts != null)
rb.setBodyParts(this.bodyParts);
// copy all other fields
// but rb.signatureCalculator, that's the whole point here
rb.uriEncoder = this.uriEncoder;
rb.queryParams = this.queryParams;
rb.uri = this.uri;
rb.address = this.address;
rb.localAddress = this.localAddress;
rb.byteData = this.byteData;
rb.compositeByteData = this.compositeByteData;
rb.stringData = this.stringData;
rb.byteBufferData = this.byteBufferData;
rb.streamData = this.streamData;
rb.bodyGenerator = this.bodyGenerator;
rb.virtualHost = this.virtualHost;
rb.contentLength = this.contentLength;
rb.proxyServer = this.proxyServer;
rb.realm = this.realm;
rb.file = this.file;
rb.followRedirect = this.followRedirect;
rb.requestTimeout = this.requestTimeout;
rb.rangeOffset = this.rangeOffset;
rb.charset = this.charset;
rb.channelPoolPartitioning = this.channelPoolPartitioning;
rb.nameResolver = this.nameResolver;
Request unsignedRequest = rb.build();
signatureCalculator.calculateAndAddSignature(unsignedRequest, rb);
return rb;
}
private Charset computeCharset() {
if (this.charset == null) {
try {
final String contentType = this.headers.get(HttpHeaders.Names.CONTENT_TYPE);
if (contentType != null) {
final Charset charset = parseCharset(contentType);
if (charset != null) {
// ensure that if charset is provided with the
// Content-Type header,
// we propagate that down to the charset of the Request
// object
return charset;
}
}
} catch (Throwable e) {
// NoOp -- we can't fix the Content-Type or charset from here
}
}
return this.charset;
}
private long computeRequestContentLength() {
if (this.contentLength < 0 && this.streamData == null) {
// can't concatenate content-length
final String contentLength = this.headers.get(HttpHeaders.Names.CONTENT_LENGTH);
if (contentLength != null) {
try {
return Long.parseLong(contentLength);
} catch (NumberFormatException e) {
// NoOp -- we won't specify length so it will be chunked?
}
}
}
return this.contentLength;
}
private Uri computeUri() {
Uri tempUri = this.uri;
if (tempUri == null) {
LOGGER.debug("setUrl hasn't been invoked. Using {}", DEFAULT_REQUEST_URL);
tempUri = DEFAULT_REQUEST_URL;
} else {
validateSupportedScheme(tempUri);
}
return uriEncoder.encode(tempUri, queryParams);
}
public Request build() {
RequestBuilderBase rb = executeSignatureCalculator();
Uri finalUri = rb.computeUri();
Charset finalCharset = rb.computeCharset();
long finalContentLength = rb.computeRequestContentLength();
// make copies of mutable internal collections
List cookiesCopy = rb.cookies == null ? Collections.emptyList() : new ArrayList<>(rb.cookies);
List formParamsCopy = rb.formParams == null ? Collections.emptyList() : new ArrayList<>(rb.formParams);
List bodyPartsCopy = rb.bodyParts == null ? Collections.emptyList() : new ArrayList<>(rb.bodyParts);
return new DefaultRequest(rb.method,//
finalUri,//
rb.address,//
rb.localAddress,//
rb.headers,//
cookiesCopy,//
rb.byteData,//
rb.compositeByteData,//
rb.stringData,//
rb.byteBufferData,//
rb.streamData,//
rb.bodyGenerator,//
formParamsCopy,//
bodyPartsCopy,//
rb.virtualHost,//
finalContentLength,//
rb.proxyServer,//
rb.realm,//
rb.file,//
rb.followRedirect,//
rb.requestTimeout,//
rb.rangeOffset,//
finalCharset,//
rb.channelPoolPartitioning,//
rb.nameResolver);
}
}