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HTTPCLIENT-1032: additional test coverage for CacheEntryUpdater. Also, 

fixed small bug where Warning headers should not be removed from an
entry if the origin response is not used for updating cache entry
headers because it is post-dated.

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1044648 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Jonathan Moore 2010-12-11 13:12:05 +00:00
parent ef148fc522
commit 7359258155
2 changed files with 143 additions and 77 deletions
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10
httpclient-cache/src/main/java/org/apache/http/impl/client/cache/CacheEntryUpdater.java vendored
View File

@ -98,17 +98,15 @@ class CacheEntryUpdater {
}
protected Header[] mergeHeaders(HttpCacheEntry entry, HttpResponse response) {
List<Header> cacheEntryHeaderList = new ArrayList<Header>(Arrays.asList(entry
.getAllHeaders()));
if (entryAndResponseHaveDateHeader(entry, response)
&& entryDateHeaderNewerThenResponse(entry, response)) {
// Don't merge Headers, keep the entries headers as they are newer.
removeCacheEntry1xxWarnings(cacheEntryHeaderList, entry);
return cacheEntryHeaderList.toArray(new Header[cacheEntryHeaderList.size()]);
// Don't merge headers, keep the entry's headers as they are newer.
return entry.getAllHeaders();
}
List<Header> cacheEntryHeaderList = new ArrayList<Header>(Arrays.asList(entry
.getAllHeaders()));
removeCacheHeadersThatMatchResponse(cacheEntryHeaderList, response);
removeCacheEntry1xxWarnings(cacheEntryHeaderList, entry);
cacheEntryHeaderList.addAll(Arrays.asList(response.getAllHeaders()));

210
httpclient-cache/src/test/java/org/apache/http/impl/client/cache/TestCacheEntryUpdater.java vendored
View File

@ -30,21 +30,18 @@ import org.apache.http.Header;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.HttpVersion;
import org.apache.http.ProtocolVersion;
import org.apache.http.client.cache.HttpCacheEntry;
import org.apache.http.impl.cookie.DateUtils;
import org.apache.http.message.BasicHeader;
import org.apache.http.message.BasicHttpResponse;
import org.apache.http.message.BasicStatusLine;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import java.io.IOException;
import java.util.Date;
import static junit.framework.Assert.assertEquals;
import static junit.framework.Assert.assertNotSame;
import static org.junit.Assert.*;
import static org.apache.http.impl.cookie.DateUtils.formatDate;
public class TestCacheEntryUpdater {
@ -52,123 +49,194 @@ public class TestCacheEntryUpdater {
private Date responseDate;
private CacheEntryUpdater impl;
private HttpCacheEntry entry;
private Date now;
private Date oneSecondAgo;
private Date twoSecondsAgo;
private Date eightSecondsAgo;
private Date tenSecondsAgo;
private HttpResponse response;
@Before
public void setUp() throws Exception {
requestDate = new Date(System.currentTimeMillis() - 1000);
responseDate = new Date();
now = new Date();
oneSecondAgo = new Date(now.getTime() - 1000L);
twoSecondsAgo = new Date(now.getTime() - 2000L);
eightSecondsAgo = new Date(now.getTime() - 8000L);
tenSecondsAgo = new Date(now.getTime() - 10000L);
response = new BasicHttpResponse(HttpVersion.HTTP_1_1,
HttpStatus.SC_NOT_MODIFIED, "Not Modified");
impl = new CacheEntryUpdater();
}
@Test
public void testUpdateCacheEntryReturnsDifferentEntryInstance() throws IOException {
HttpCacheEntry entry =HttpTestUtils.makeCacheEntry();
BasicHttpResponse response = new BasicHttpResponse(HttpVersion.HTTP_1_1, HttpStatus.SC_NOT_MODIFIED, "");
HttpCacheEntry newEntry = impl.updateCacheEntry(null, entry, requestDate, responseDate, response);
public void testUpdateCacheEntryReturnsDifferentEntryInstance()
throws IOException {
entry = HttpTestUtils.makeCacheEntry();
HttpCacheEntry newEntry = impl.updateCacheEntry(null, entry,
requestDate, responseDate, response);
assertNotSame(newEntry, entry);
}
@Test
public void testHeadersAreMergedCorrectly() throws IOException {
Header[] headers = {
new BasicHeader("Date", DateUtils.formatDate(responseDate)),
new BasicHeader("Date", formatDate(responseDate)),
new BasicHeader("ETag", "\"etag\"")};
HttpCacheEntry cacheEntry = HttpTestUtils.makeCacheEntry(headers);
HttpResponse response = new BasicHttpResponse(new BasicStatusLine(new ProtocolVersion(
"http", 1, 1), HttpStatus.SC_NOT_MODIFIED, ""));
entry = HttpTestUtils.makeCacheEntry(headers);
response.setHeaders(new Header[]{});
HttpCacheEntry updatedEntry = impl.updateCacheEntry(null, cacheEntry, new Date(), new Date(), response);
Assert.assertEquals(2, updatedEntry.getAllHeaders().length);
headersContain(updatedEntry.getAllHeaders(), "Date", DateUtils.formatDate(responseDate));
headersContain(updatedEntry.getAllHeaders(), "ETag", "\"etag\"");
HttpCacheEntry updatedEntry = impl.updateCacheEntry(null, entry,
new Date(), new Date(), response);
Header[] updatedHeaders = updatedEntry.getAllHeaders();
assertEquals(2, updatedHeaders.length);
headersContain(updatedHeaders, "Date", formatDate(responseDate));
headersContain(updatedHeaders, "ETag", "\"etag\"");
}
@Test
public void testNewerHeadersReplaceExistingHeaders() throws IOException {
Header[] headers = {
new BasicHeader("Date", DateUtils.formatDate(requestDate)),
new BasicHeader("Cache-Control", "private"), new BasicHeader("ETag", "\"etag\""),
new BasicHeader("Last-Modified", DateUtils.formatDate(requestDate)),
new BasicHeader("Date", formatDate(requestDate)),
new BasicHeader("Cache-Control", "private"),
new BasicHeader("ETag", "\"etag\""),
new BasicHeader("Last-Modified", formatDate(requestDate)),
new BasicHeader("Cache-Control", "max-age=0"),};
HttpCacheEntry cacheEntry = HttpTestUtils.makeCacheEntry(headers);
entry = HttpTestUtils.makeCacheEntry(headers);
HttpResponse response = new BasicHttpResponse(new BasicStatusLine(new ProtocolVersion(
"http", 1, 1), HttpStatus.SC_NOT_MODIFIED, ""));
response.setHeaders(new Header[]{
new BasicHeader("Last-Modified", DateUtils.formatDate(responseDate)),
new BasicHeader("Cache-Control", "public"),});
response.setHeaders(new Header[] {
new BasicHeader("Last-Modified", formatDate(responseDate)),
new BasicHeader("Cache-Control", "public")});
HttpCacheEntry updatedEntry = impl.updateCacheEntry(null, cacheEntry, new Date(), new Date(), response);
HttpCacheEntry updatedEntry = impl.updateCacheEntry(null, entry,
new Date(), new Date(), response);
Header[] updatedHeaders = updatedEntry.getAllHeaders();
Assert.assertEquals(4, updatedEntry.getAllHeaders().length);
headersContain(updatedEntry.getAllHeaders(), "Date", DateUtils.formatDate(requestDate));
headersContain(updatedEntry.getAllHeaders(), "ETag", "\"etag\"");
headersContain(updatedEntry.getAllHeaders(), "Last-Modified", DateUtils
assertEquals(4, updatedHeaders.length);
headersContain(updatedHeaders, "Date", formatDate(requestDate));
headersContain(updatedHeaders, "ETag", "\"etag\"");
headersContain(updatedHeaders, "Last-Modified", DateUtils
.formatDate(responseDate));
headersContain(updatedEntry.getAllHeaders(), "Cache-Control", "public");
headersContain(updatedHeaders, "Cache-Control", "public");
}
@Test
public void testNewHeadersAreAddedByMerge() throws IOException {
Header[] headers = {
new BasicHeader("Date", DateUtils.formatDate(requestDate)),
new BasicHeader("Date", formatDate(requestDate)),
new BasicHeader("ETag", "\"etag\"")};
HttpCacheEntry cacheEntry = HttpTestUtils.makeCacheEntry(headers);
HttpResponse response = new BasicHttpResponse(new BasicStatusLine(new ProtocolVersion(
"http", 1, 1), HttpStatus.SC_NOT_MODIFIED, ""));
entry = HttpTestUtils.makeCacheEntry(headers);
response.setHeaders(new Header[]{
new BasicHeader("Last-Modified", DateUtils.formatDate(responseDate)),
new BasicHeader("Last-Modified", formatDate(responseDate)),
new BasicHeader("Cache-Control", "public"),});
HttpCacheEntry updatedEntry = impl.updateCacheEntry(null, cacheEntry, new Date(), new Date(), response);
HttpCacheEntry updatedEntry = impl.updateCacheEntry(null, entry,
new Date(), new Date(), response);
Header[] updatedHeaders = updatedEntry.getAllHeaders();
assertEquals(4, updatedHeaders.length);
Assert.assertEquals(4, updatedEntry.getAllHeaders().length);
headersContain(updatedEntry.getAllHeaders(), "Date", DateUtils.formatDate(requestDate));
headersContain(updatedEntry.getAllHeaders(), "ETag", "\"etag\"");
headersContain(updatedEntry.getAllHeaders(), "Last-Modified", DateUtils
.formatDate(responseDate));
headersContain(updatedEntry.getAllHeaders(), "Cache-Control", "public");
headersContain(updatedHeaders, "Date", formatDate(requestDate));
headersContain(updatedHeaders, "ETag", "\"etag\"");
headersContain(updatedHeaders, "Last-Modified", formatDate(responseDate));
headersContain(updatedHeaders, "Cache-Control", "public");
}
@Test
public void testUpdatedEntryHasLatestRequestAndResponseDates() throws IOException {
public void oldHeadersRetainedIfResponseOlderThanEntry()
throws Exception {
Header[] headers = {
new BasicHeader("Date", formatDate(oneSecondAgo)),
new BasicHeader("ETag", "\"new-etag\"")
};
entry = HttpTestUtils.makeCacheEntry(twoSecondsAgo, now, headers);
response.setHeader("Date", formatDate(tenSecondsAgo));
response.setHeader("ETag", "\"old-etag\"");
HttpCacheEntry result = impl.updateCacheEntry("A", entry, new Date(),
new Date(), response);
assertEquals(2, result.getAllHeaders().length);
headersContain(result.getAllHeaders(), "Date", formatDate(oneSecondAgo));
headersContain(result.getAllHeaders(), "ETag", "\"new-etag\"");
}
Date now = new Date();
Date tenSecondsAgo = new Date(now.getTime() - 10000L);
Date eightSecondsAgo = new Date(now.getTime() - 8000L);
Date twoSecondsAgo = new Date(now.getTime() - 2000L);
Date oneSecondAgo = new Date(now.getTime() - 1000L);
HttpCacheEntry entry = HttpTestUtils.makeCacheEntry(tenSecondsAgo, eightSecondsAgo);
HttpResponse response = new BasicHttpResponse(HttpVersion.HTTP_1_1, HttpStatus.SC_NOT_MODIFIED, "");
HttpCacheEntry updated = impl.updateCacheEntry(null, entry, twoSecondsAgo, oneSecondAgo, response);
@Test
public void testUpdatedEntryHasLatestRequestAndResponseDates()
throws IOException {
entry = HttpTestUtils.makeCacheEntry(tenSecondsAgo, eightSecondsAgo);
HttpCacheEntry updated = impl.updateCacheEntry(null, entry,
twoSecondsAgo, oneSecondAgo, response);
assertEquals(twoSecondsAgo, updated.getRequestDate());
assertEquals(oneSecondAgo, updated.getResponseDate());
}
@Test
public void entry1xxWarningsAreRemovedOnUpdate() throws Exception {
Header[] headers = {
new BasicHeader("Warning", "110 fred \"Response is stale\""),
new BasicHeader("ETag", "\"old\""),
new BasicHeader("Date", formatDate(eightSecondsAgo))
};
entry = HttpTestUtils.makeCacheEntry(tenSecondsAgo, eightSecondsAgo, headers);
response.setHeader("ETag", "\"new\"");
response.setHeader("Date", formatDate(twoSecondsAgo));
HttpCacheEntry updated = impl.updateCacheEntry(null, entry,
twoSecondsAgo, oneSecondAgo, response);
assertEquals(0, updated.getHeaders("Warning").length);
}
@Test
public void entryWithMalformedDateIsStillUpdated() throws Exception {
Header[] headers = {
new BasicHeader("ETag", "\"old\""),
new BasicHeader("Date", "bad-date")
};
entry = HttpTestUtils.makeCacheEntry(tenSecondsAgo, eightSecondsAgo, headers);
response.setHeader("ETag", "\"new\"");
response.setHeader("Date", formatDate(twoSecondsAgo));
HttpCacheEntry updated = impl.updateCacheEntry(null, entry,
twoSecondsAgo, oneSecondAgo, response);
assertEquals("\"new\"", updated.getFirstHeader("ETag").getValue());
}
@Test
public void entryIsStillUpdatedByResponseWithMalformedDate() throws Exception {
Header[] headers = {
new BasicHeader("ETag", "\"old\""),
new BasicHeader("Date", formatDate(tenSecondsAgo))
};
entry = HttpTestUtils.makeCacheEntry(tenSecondsAgo, eightSecondsAgo, headers);
response.setHeader("ETag", "\"new\"");
response.setHeader("Date", "bad-date");
HttpCacheEntry updated = impl.updateCacheEntry(null, entry,
twoSecondsAgo, oneSecondAgo, response);
assertEquals("\"new\"", updated.getFirstHeader("ETag").getValue());
}
@Test
public void cannotUpdateFromANon304OriginResponse() throws Exception {
entry = HttpTestUtils.makeCacheEntry();
response = new BasicHttpResponse(HttpVersion.HTTP_1_1,
HttpStatus.SC_OK, "OK");
try {
impl.updateCacheEntry("A", entry, new Date(), new Date(),
response);
fail("should have thrown exception");
} catch (IllegalArgumentException expected) {
}
}
private void headersContain(Header[] headers, String name, String value) {
@ -179,7 +247,7 @@ public class TestCacheEntryUpdater {
}
}
}
Assert.fail("Header [" + name + ": " + value + "] not found in headers.");
fail("Header [" + name + ": " + value + "] not found in headers.");
}
}