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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.http.server.jetty;
import com.yahoo.jdisc.http.HttpHeaders;
import org.apache.http.Header;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.entity.ByteArrayEntity;
import org.apache.http.entity.StringEntity;
import org.apache.http.entity.mime.FormBodyPart;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.conn.BasicHttpClientConnectionManager;
import org.apache.http.util.EntityUtils;
import org.hamcrest.Matcher;
import org.hamcrest.MatcherAssert;
import javax.net.ssl.SSLContext;
import java.io.ByteArrayOutputStream;
import java.io.EOFException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStreamWriter;
import java.net.Socket;
import java.net.URI;
import java.nio.charset.StandardCharsets;
import java.util.Arrays;
import java.util.regex.Pattern;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.not;
import static org.hamcrest.CoreMatchers.nullValue;
import static org.hamcrest.MatcherAssert.assertThat;
/**
* A simple http client for testing
*
* @author Simon Thoresen Hult
*/
public class SimpleHttpClient {
private final HttpClient delegate;
private final String scheme;
private final int listenPort;
public SimpleHttpClient(final SSLContext sslContext, final int listenPort, final boolean useCompression) {
HttpClientBuilder builder = HttpClientBuilder.create();
if (!useCompression) {
builder.disableContentCompression();
}
if (sslContext != null) {
SSLConnectionSocketFactory sslConnectionFactory = new SSLConnectionSocketFactory(
sslContext,
SSLConnectionSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
builder.setSSLSocketFactory(sslConnectionFactory);
Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create()
.register("https", sslConnectionFactory)
.build();
builder.setConnectionManager(new BasicHttpClientConnectionManager(registry));
scheme = "https";
} else {
scheme = "http";
}
this.delegate = builder.build();
this.listenPort = listenPort;
}
public URI newUri(final String path) {
return URI.create(scheme + "://localhost:" + listenPort + path);
}
public RequestExecutor newGet(final String path) {
return newRequest(new HttpGet(newUri(path)));
}
public RequestExecutor newPost(final String path) {
return newRequest(new HttpPost(newUri(path)));
}
public RequestExecutor newRequest(final HttpUriRequest request) {
return new RequestExecutor().setRequest(request);
}
public ResponseValidator execute(final HttpUriRequest request) throws IOException {
return newRequest(request).execute();
}
public ResponseValidator get(final String path) throws IOException {
return newGet(path).execute();
}
public String raw(final String request) throws IOException {
final Socket socket = new Socket("localhost", listenPort);
final OutputStreamWriter out = new OutputStreamWriter(socket.getOutputStream(), StandardCharsets.UTF_8);
out.write(request);
out.flush();
final ByteArrayOutputStream buf = new ByteArrayOutputStream();
final InputStream in = socket.getInputStream();
final int[] TERMINATOR = { '\r', '\n', '\r', '\n' };
for (int pos = 0; pos < TERMINATOR.length; ++pos) {
final int b = in.read();
if (b < 0) {
throw new EOFException();
}
if (b != TERMINATOR[pos]) {
pos = -1;
}
buf.write(b);
}
final String response = buf.toString(StandardCharsets.UTF_8.name());
final java.util.regex.Matcher matcher = Pattern.compile(HttpHeaders.Names.CONTENT_LENGTH + ": (.+)\r\n").matcher(response);
if (matcher.find()) {
final int len = Integer.valueOf(matcher.group(1));
for (int i = 0; i < len; ++i) {
final int b = in.read();
if (b < 0) {
throw new EOFException();
}
buf.write(b);
}
}
socket.close();
return buf.toString(StandardCharsets.UTF_8.name());
}
public class RequestExecutor {
private HttpUriRequest request;
private HttpEntity entity;
public RequestExecutor setRequest(final HttpUriRequest request) {
this.request = request;
return this;
}
public RequestExecutor addHeader(final String name, final String value) {
this.request.addHeader(name, value);
return this;
}
public RequestExecutor setContent(final String content) {
this.entity = new StringEntity(content, StandardCharsets.UTF_8);
return this;
}
public RequestExecutor setBinaryContent(final byte[] content) {
this.entity = new ByteArrayEntity(content);
return this;
}
public RequestExecutor setMultipartContent(final FormBodyPart... parts) {
MultipartEntityBuilder builder = MultipartEntityBuilder.create();
Arrays.stream(parts).forEach(part -> builder.addPart(part.getName(), part.getBody()));
this.entity = builder.build();
return this;
}
public ResponseValidator execute() throws IOException {
if (entity != null) {
((HttpPost)request).setEntity(entity);
}
return new ResponseValidator(delegate.execute(request));
}
}
public static class ResponseValidator {
private final HttpResponse response;
private final String content;
public ResponseValidator(final HttpResponse response) throws IOException {
this.response = response;
final HttpEntity entity = response.getEntity();
this.content = entity == null ? null :
EntityUtils.toString(entity, StandardCharsets.UTF_8);
}
public ResponseValidator expectStatusCode(final Matcher<Integer> matcher) {
MatcherAssert.assertThat(response.getStatusLine().getStatusCode(), matcher);
return this;
}
public ResponseValidator expectHeader(final String headerName, final Matcher<String> matcher) {
final Header firstHeader = response.getFirstHeader(headerName);
final String headerValue = firstHeader != null ? firstHeader.getValue() : null;
MatcherAssert.assertThat(headerValue, matcher);
assertThat(firstHeader, is(not(nullValue())));
return this;
}
public ResponseValidator expectNoHeader(final String headerName) {
final Header firstHeader = response.getFirstHeader(headerName);
assertThat(firstHeader, is(nullValue()));
return this;
}
public ResponseValidator expectContent(final Matcher<String> matcher) throws IOException {
MatcherAssert.assertThat(content, matcher);
return this;
}
public ResponseValidator expectTrailer(final String trailerName, final Matcher<String> matcher) {
// TODO: check trailer, not header
return expectHeader(trailerName, matcher);
}
}
}
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