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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.container.jdisc;
import com.yahoo.api.annotations.Beta;
import com.yahoo.jdisc.Request;
import com.yahoo.jdisc.Response;
import com.yahoo.jdisc.application.ContainerBuilder;
import com.yahoo.jdisc.handler.BufferedContentChannel;
import com.yahoo.jdisc.handler.ContentChannel;
import com.yahoo.jdisc.handler.ReadableContentChannel;
import com.yahoo.jdisc.handler.RequestHandler;
import com.yahoo.jdisc.handler.ResponseHandler;
import com.yahoo.jdisc.http.HttpRequest;
import com.yahoo.jdisc.test.TestDriver;
import java.net.URI;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
/**
* A helper for making tests creating jDisc requests and checking their responses.
*
* @author bratseth
*/
@Beta
public class RequestHandlerTestDriver implements AutoCloseable {
private final TestDriver driver;
private MockResponseHandler responseHandler = null;
/** Creates this with a binding to "http://localhost/*" */
public RequestHandlerTestDriver(RequestHandler handler) {
this("http://localhost/*", handler);
}
public RequestHandlerTestDriver(String binding, RequestHandler handler) {
driver = TestDriver.newSimpleApplicationInstanceWithoutOsgi();
ContainerBuilder builder = driver.newContainerBuilder();
builder.serverBindings().bind(binding, handler);
driver.activateContainer(builder);
}
@Override
public void close() {
if (responseHandler != null)
responseHandler.readAll();
assertTrue("Driver closed", driver.close());
}
/** Returns the jDisc level driver wrapped by this */
public TestDriver jDiscDriver() { return driver; }
/** Send a GET request */
public MockResponseHandler sendRequest(String uri) {
return sendRequest(uri, HttpRequest.Method.GET);
}
public MockResponseHandler sendRequest(String uri, HttpRequest.Method method) {
return sendRequest(uri, method, "");
}
/** Send a POST request */
public MockResponseHandler sendRequest(String uri, HttpRequest.Method method, String body) {
return sendRequest(uri, method, ByteBuffer.wrap(body.getBytes(StandardCharsets.UTF_8)));
}
/** Send a POST request with defined content type */
public MockResponseHandler sendRequest(String uri, HttpRequest.Method method, String body, String contentType) {
return sendRequest(uri, method, ByteBuffer.wrap(body.getBytes(StandardCharsets.UTF_8)), contentType);
}
public MockResponseHandler sendRequest(String uri, HttpRequest.Method method, ByteBuffer body) {
MockResponseHandler responseHandler = new MockResponseHandler();
Request request = HttpRequest.newServerRequest(driver, URI.create(uri), method);
request.context().put("contextVariable", 37); // TODO: Add a method for accepting a Request instead
ContentChannel requestContent = request.connect(responseHandler);
requestContent.write(body, null);
requestContent.close(null);
request.release();
return this.responseHandler = responseHandler;
}
public MockResponseHandler sendRequest(String uri, HttpRequest.Method method, ByteBuffer body, String contentType) {
responseHandler = new MockResponseHandler();
Request request = HttpRequest.newServerRequest(driver, URI.create(uri), method);
request.context().put("contextVariable", 37); // TODO: Add a method for accepting a Request instead
request.headers().put(com.yahoo.jdisc.http.HttpHeaders.Names.CONTENT_TYPE, contentType);
ContentChannel requestContent = request.connect(responseHandler);
requestContent.write(body, null);
requestContent.close(null);
request.release();
return responseHandler;
}
/** Replaces all occurrences of 0-9 digits by d's */
public String censorDigits(String s) {
return s.replaceAll("[0-9]","d");
}
/** Junit asserts are not available in the runtime dependencies */
private static void assertTrue(String assertionMessage, boolean expectedTrue) {
if ( ! expectedTrue)
throw new RuntimeException("Assertion in ProcessingTestDriver failed: " + assertionMessage);
}
public static class MockResponseHandler implements ResponseHandler {
private final CountDownLatch latch = new CountDownLatch(1);
private final ReadableContentChannel content = new ReadableContentChannel();
private final BufferedContentChannel buffer = new BufferedContentChannel();
Response response = null;
/** Blocks until there's a response (max 60 seconds). Returns this for chaining convenience */
public MockResponseHandler awaitResponse() throws InterruptedException {
assertTrue("Handler responded", latch.await(60, TimeUnit.SECONDS));
return this;
}
/**
* Read the next piece of data from this channel, blocking if needed.
* If all data is already read, this returns null.
*/
public String read() {
ByteBuffer nextBuffer = content.read();
if (nextBuffer == null) return null; // end of transmission
return StandardCharsets.UTF_8.decode(nextBuffer).toString();
}
/** Returns the number of bytes available in the handler right now */
public int available() {
return content.available();
}
/**
* Reads all data that will ever be produced by the channel attached to this, blocking as necessary.
* Returns an empty string if there is no data.
*/
public String readAll() {
String next;
StringBuilder responseString = new StringBuilder();
while (null != (next = read()) )
responseString.append(next);
return responseString.toString();
}
/** Consumes all <i>currently</i> available data, or returns "" if no data is available right now. Never blocks. */
public String readIfAvailable() {
StringBuilder b = new StringBuilder();
while (content.available()>0) {
ByteBuffer nextBuffer = content.read();
b.append(Charset.forName("utf-8").decode(nextBuffer));
}
return b.toString();
}
@Override
public ContentChannel handleResponse(Response response) {
this.response = response;
latch.countDown();
buffer.connectTo(this.content);
return buffer;
}
public void clientClose() {
buffer.close(null);
}
/** Returns the status code. Throws an exception if handleResponse is not called prior to calling this */
public int getStatus() {
return response.getStatus();
}
public Response getResponse() { return response; }
}
}
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