| /* |
| * ==================================================================== |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| */ |
| package org.apache.hc.client5.http.impl.cache; |
| |
| import java.io.InputStream; |
| import java.time.Duration; |
| import java.time.Instant; |
| import java.util.Collection; |
| import java.util.Iterator; |
| import java.util.Objects; |
| import java.util.Random; |
| import java.util.concurrent.CountDownLatch; |
| import java.util.function.Consumer; |
| |
| import org.apache.hc.client5.http.cache.HttpCacheEntry; |
| import org.apache.hc.client5.http.cache.Resource; |
| import org.apache.hc.client5.http.utils.DateUtils; |
| import org.apache.hc.core5.concurrent.FutureCallback; |
| import org.apache.hc.core5.http.ClassicHttpRequest; |
| import org.apache.hc.core5.http.ClassicHttpResponse; |
| import org.apache.hc.core5.http.Header; |
| import org.apache.hc.core5.http.HttpEntity; |
| import org.apache.hc.core5.http.HttpMessage; |
| import org.apache.hc.core5.http.HttpRequest; |
| import org.apache.hc.core5.http.HttpResponse; |
| import org.apache.hc.core5.http.HttpStatus; |
| import org.apache.hc.core5.http.HttpVersion; |
| import org.apache.hc.core5.http.Method; |
| import org.apache.hc.core5.http.ProtocolVersion; |
| import org.apache.hc.core5.http.io.entity.ByteArrayEntity; |
| import org.apache.hc.core5.http.message.BasicClassicHttpRequest; |
| import org.apache.hc.core5.http.message.BasicClassicHttpResponse; |
| import org.apache.hc.core5.http.message.BasicHeader; |
| import org.apache.hc.core5.http.message.HeaderGroup; |
| import org.apache.hc.core5.http.message.MessageSupport; |
| import org.apache.hc.core5.util.ByteArrayBuffer; |
| import org.junit.jupiter.api.Assertions; |
| |
| public class HttpTestUtils { |
| |
| /* |
| * Assertions.asserts that two request or response bodies are byte-equivalent. |
| */ |
| public static boolean equivalent(final HttpEntity e1, final HttpEntity e2) throws Exception { |
| final InputStream i1 = e1.getContent(); |
| final InputStream i2 = e2.getContent(); |
| if (i1 == null && i2 == null) { |
| return true; |
| } |
| if (i1 == null || i2 == null) { |
| return false; // avoid possible NPEs below |
| } |
| int b1 = -1; |
| while ((b1 = i1.read()) != -1) { |
| if (b1 != i2.read()) { |
| return false; |
| } |
| } |
| return (-1 == i2.read()); |
| } |
| |
| /* |
| * Retrieves the full header value by combining multiple headers and |
| * separating with commas, canonicalizing whitespace along the way. |
| */ |
| public static String getCanonicalHeaderValue(final HttpMessage r, final String name) { |
| final int n = r.countHeaders(name); |
| r.getFirstHeader(name); |
| if (n == 0) { |
| return null; |
| } else if (n == 1) { |
| final Header h = r.getFirstHeader(name); |
| return h != null ? h.getValue() : null; |
| } else { |
| final StringBuilder buf = new StringBuilder(); |
| for (final Iterator<Header> it = r.headerIterator(name); it.hasNext(); ) { |
| if (buf.length() > 0) { |
| buf.append(", "); |
| } |
| final Header header = it.next(); |
| if (header != null) { |
| buf.append(header.getValue().trim()); |
| } |
| } |
| return buf.toString(); |
| } |
| } |
| |
| /* |
| * Assertions.asserts that all the headers appearing in r1 also appear in r2 |
| * with the same canonical header values. |
| */ |
| public static boolean isEndToEndHeaderSubset(final HttpMessage r1, final HttpMessage r2) { |
| for (final Header h : r1.getHeaders()) { |
| if (!MessageSupport.isHopByHop(h.getName())) { |
| final String r1val = getCanonicalHeaderValue(r1, h.getName()); |
| final String r2val = getCanonicalHeaderValue(r2, h.getName()); |
| if (!Objects.equals(r1val, r2val)) { |
| return false; |
| } |
| } |
| } |
| return true; |
| } |
| |
| /* |
| * Assertions.asserts that message {@code r2} represents exactly the same |
| * message as {@code r1}, except for hop-by-hop headers. "When a cache |
| * is semantically transparent, the client receives exactly the same |
| * response (except for hop-by-hop headers) that it would have received had |
| * its request been handled directly by the origin server." |
| */ |
| public static boolean semanticallyTransparent( |
| final ClassicHttpResponse r1, final ClassicHttpResponse r2) throws Exception { |
| final boolean statusLineEquivalent = Objects.equals(r1.getReasonPhrase(), r2.getReasonPhrase()) |
| && r1.getCode() == r2.getCode(); |
| if (!statusLineEquivalent) { |
| return false; |
| } |
| final boolean headerEquivalent = isEndToEndHeaderSubset(r1, r2); |
| if (!headerEquivalent) { |
| return false; |
| } |
| final boolean entityEquivalent = equivalent(r1.getEntity(), r2.getEntity()); |
| if (!entityEquivalent) { |
| return false; |
| } |
| return true; |
| } |
| |
| /* Assertions.asserts that protocol versions equivalent. */ |
| public static boolean equivalent(final ProtocolVersion v1, final ProtocolVersion v2) { |
| return Objects.equals(v1 != null ? v1 : HttpVersion.DEFAULT, v2 != null ? v2 : HttpVersion.DEFAULT ); |
| } |
| |
| /* Assertions.asserts that two requests are morally equivalent. */ |
| public static boolean equivalent(final HttpRequest r1, final HttpRequest r2) { |
| return equivalent(r1.getVersion(), r2.getVersion()) && |
| Objects.equals(r1.getMethod(), r2.getMethod()) && |
| Objects.equals(r1.getRequestUri(), r2.getRequestUri()) && |
| isEndToEndHeaderSubset(r1, r2); |
| } |
| |
| /* Assertions.asserts that two requests are morally equivalent. */ |
| public static boolean equivalent(final HttpResponse r1, final HttpResponse r2) { |
| return equivalent(r1.getVersion(), r2.getVersion()) && |
| r1.getCode() == r2.getCode() && |
| Objects.equals(r1.getReasonPhrase(), r2.getReasonPhrase()) && |
| isEndToEndHeaderSubset(r1, r2); |
| } |
| |
| public static byte[] makeRandomBytes(final int nbytes) { |
| final byte[] bytes = new byte[nbytes]; |
| new Random().nextBytes(bytes); |
| return bytes; |
| } |
| |
| public static Resource makeRandomResource(final int nbytes) { |
| final byte[] bytes = new byte[nbytes]; |
| new Random().nextBytes(bytes); |
| return new HeapResource(bytes); |
| } |
| |
| public static Resource makeNullResource() { |
| return null; |
| } |
| |
| public static ByteArrayBuffer makeRandomBuffer(final int nbytes) { |
| final ByteArrayBuffer buf = new ByteArrayBuffer(nbytes); |
| buf.setLength(nbytes); |
| new Random().nextBytes(buf.array()); |
| return buf; |
| } |
| |
| /** Generates a response body with random content. |
| * @param nbytes length of the desired response body |
| * @return an {@link HttpEntity} |
| */ |
| public static HttpEntity makeBody(final int nbytes) { |
| return new ByteArrayEntity(makeRandomBytes(nbytes), null); |
| } |
| |
| public static HeaderGroup headers(final Header... headers) { |
| final HeaderGroup headerGroup = new HeaderGroup(); |
| if (headers != null && headers.length > 0) { |
| headerGroup.setHeaders(headers); |
| } |
| return headerGroup; |
| } |
| |
| public static HttpCacheEntry makeCacheEntry(final Instant requestDate, |
| final Instant responseDate, |
| final Method method, |
| final String requestUri, |
| final Header[] requestHeaders, |
| final int status, |
| final Header[] responseHeaders, |
| final Collection<String> variants) { |
| return new HttpCacheEntry( |
| requestDate, |
| responseDate, |
| method.name(), requestUri, headers(requestHeaders), |
| status, headers(responseHeaders), |
| null, |
| variants); |
| } |
| |
| public static HttpCacheEntry makeCacheEntry(final Instant requestDate, |
| final Instant responseDate, |
| final Method method, |
| final String requestUri, |
| final Header[] requestHeaders, |
| final int status, |
| final Header[] responseHeaders, |
| final Resource resource) { |
| return new HttpCacheEntry( |
| requestDate, |
| responseDate, |
| method.name(), requestUri, headers(requestHeaders), |
| status, headers(responseHeaders), |
| resource, |
| null); |
| } |
| |
| public static HttpCacheEntry makeCacheEntry(final Instant requestDate, |
| final Instant responseDate, |
| final int status, |
| final Header[] responseHeaders, |
| final Collection<String> variants) { |
| return makeCacheEntry( |
| requestDate, |
| responseDate, |
| Method.GET, "/", null, |
| status, responseHeaders, |
| variants); |
| } |
| |
| public static HttpCacheEntry makeCacheEntry(final Instant requestDate, |
| final Instant responseDate, |
| final int status, |
| final Header[] responseHeaders, |
| final Resource resource) { |
| return makeCacheEntry( |
| requestDate, |
| responseDate, |
| Method.GET, "/", null, |
| status, responseHeaders, |
| resource); |
| } |
| |
| public static Header[] getStockHeaders(final Instant when) { |
| return new Header[] { |
| new BasicHeader("Date", DateUtils.formatStandardDate(when)), |
| new BasicHeader("Server", "MockServer/1.0") |
| }; |
| } |
| |
| public static HttpCacheEntry makeCacheEntry(final Instant requestDate, final Instant responseDate) { |
| final Duration diff = Duration.between(requestDate, responseDate); |
| final Instant when = requestDate.plusMillis(diff.toMillis() / 2); |
| return makeCacheEntry(requestDate, responseDate, getStockHeaders(when)); |
| } |
| |
| public static HttpCacheEntry makeCacheEntry(final Instant requestDate, |
| final Instant responseDate, |
| final Header[] headers, |
| final byte[] bytes) { |
| return makeCacheEntry(requestDate, responseDate, HttpStatus.SC_OK, headers, new HeapResource(bytes)); |
| } |
| |
| public static HttpCacheEntry makeCacheEntry(final Instant requestDate, |
| final Instant responseDate, |
| final Header... headers) { |
| return makeCacheEntry(requestDate, responseDate, headers, makeRandomBytes(128)); |
| } |
| |
| public static HttpCacheEntry makeCacheEntry(final Instant requestDate, |
| final Instant responseDate, |
| final Header[] headers, |
| final Collection<String> variants) { |
| return makeCacheEntry(requestDate, responseDate, Method.GET, "/", null, HttpStatus.SC_OK, headers, variants); |
| } |
| |
| public static HttpCacheEntry makeCacheEntry(final Collection<String> variants) { |
| final Instant now = Instant.now(); |
| return makeCacheEntry(now, now, new Header[] {}, variants); |
| } |
| |
| public static HttpCacheEntry makeCacheEntry(final Header[] headers, final byte[] bytes) { |
| final Instant now = Instant.now(); |
| return makeCacheEntry(now, now, headers, bytes); |
| } |
| |
| public static HttpCacheEntry makeCacheEntry(final byte[] bytes) { |
| final Instant now = Instant.now(); |
| return makeCacheEntry(getStockHeaders(now), bytes); |
| } |
| |
| public static HttpCacheEntry makeCacheEntry(final Header... headers) { |
| return makeCacheEntry(headers, makeRandomBytes(128)); |
| } |
| |
| public static HttpCacheEntry makeCacheEntry() { |
| final Instant now = Instant.now(); |
| return makeCacheEntry(now, now); |
| } |
| |
| public static ClassicHttpResponse make200Response() { |
| final ClassicHttpResponse out = new BasicClassicHttpResponse(HttpStatus.SC_OK, "OK"); |
| out.setHeader("Date", DateUtils.formatStandardDate(Instant.now())); |
| out.setHeader("Server", "MockOrigin/1.0"); |
| out.setHeader("Content-Length", "128"); |
| out.setEntity(makeBody(128)); |
| return out; |
| } |
| |
| public static final ClassicHttpResponse make200Response(final Instant date, final String cacheControl) { |
| final ClassicHttpResponse response = HttpTestUtils.make200Response(); |
| response.setHeader("Date", DateUtils.formatStandardDate(date)); |
| response.setHeader("Cache-Control",cacheControl); |
| response.setHeader("Etag","\"etag\""); |
| return response; |
| } |
| |
| public static ClassicHttpResponse make304Response() { |
| return new BasicClassicHttpResponse(HttpStatus.SC_NOT_MODIFIED, "Not modified"); |
| } |
| |
| public static ClassicHttpRequest makeDefaultRequest() { |
| return new BasicClassicHttpRequest(Method.GET.toString(), "/"); |
| } |
| |
| public static ClassicHttpRequest makeDefaultHEADRequest() { |
| return new BasicClassicHttpRequest(Method.HEAD.toString(), "/"); |
| } |
| |
| public static ClassicHttpResponse make500Response() { |
| return new BasicClassicHttpResponse(HttpStatus.SC_INTERNAL_SERVER_ERROR, "Internal Server Error"); |
| } |
| |
| public static <T> FutureCallback<T> countDown(final CountDownLatch latch, final Consumer<T> consumer) { |
| return new FutureCallback<T>() { |
| |
| @Override |
| public void completed(final T result) { |
| if (consumer != null) { |
| consumer.accept(result); |
| } |
| latch.countDown(); |
| } |
| |
| @Override |
| public void failed(final Exception ex) { |
| latch.countDown(); |
| Assertions.fail(ex); |
| } |
| |
| @Override |
| public void cancelled() { |
| latch.countDown(); |
| Assertions.fail("Unexpected cancellation"); |
| } |
| |
| }; |
| |
| } |
| |
| public static <T> FutureCallback<T> countDown(final CountDownLatch latch) { |
| return countDown(latch, null); |
| } |
| |
| } |