When HttpClient-Cache cannot open cache file, should act like miss
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Key: HTTPCLIENT-1147
URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1147
Project: HttpComponents HttpClient
Issue Type: Bug
Components: Cache
Affects Versions: 4.2 Alpha1
Reporter: Craig
Set up HttpClient-Cache like this:
final String cacheDir = "cachedir";
HttpClient cachingHttpClient;
final CacheConfig cacheConfig = new CacheConfig();
cacheConfig.setSharedCache(false);
cacheConfig.setMaxObjectSizeBytes(262144); //256kb
if(! new File(cacheDir, "httpclient-cache").exists()){
if(!new File(cacheDir, "httpclient-cache").mkdir()){
throw new RuntimeException("failed to create httpclient cache
directory: " + new File(cacheDir, "httpclient-cache").getAbsolutePath());
}
}
final ResourceFactory resourceFactory = new FileResourceFactory(new
File(cacheDir, "httpclient-cache"));
final HttpCacheStorage httpCacheStorage = new
ManagedHttpCacheStorage(cacheConfig);
cachingHttpClient = new CachingHttpClient(client, resourceFactory,
httpCacheStorage, cacheConfig);
Then make a request:
final HttpGet get = new HttpGet(url);
final HttpResponse response = cachingHttpClient.execute(get);
final StatusLine statusLine = response.getStatusLine();
if (statusLine.getStatusCode() >= 300) {
if(statusLine.getStatusCode() == 404)
throw new NoResultException();
throw new HttpResponseException(statusLine.getStatusCode(),
statusLine.getReasonPhrase());
}
response.getEntity().getContent();
Everything worked as expected.
Now delete the cache directory ("cachedir/httpclient-cache" in this example).
And make the same request again.
Actual:
Caused by: java.lang.IllegalStateException: Content has been consumed
at
org.apache.http.entity.BasicHttpEntity.getContent(BasicHttpEntity.java:84)
at
org.apache.http.conn.BasicManagedEntity.getContent(BasicManagedEntity.java:100)
Expected:
HttpClient shouldn't throw an exception - it should just perform the request
again acting like a cache miss.
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