[HTTPCLIENT-1324] CachingHttpClientBuilder.build() fails when asynchronousWorkersMax=0

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 4.3 Alpha1
• Fix Version/s: 4.3 Beta1
• Component/s: HttpCache
• Assignee: Unassigned
• Reporter: Francois-Xavier Bonnet
• Created: 19/Feb/13 14:44
• Updated: 05/Oct/13 19:41
• Resolved: 19/Feb/13 15:23

Description

The following code throws an Exception:
CacheConfig cacheConfig = CacheConfig.custom().setAsynchronousWorkersMax(0).build();
CachingHttpClientBuilder.create().setCacheConfig(cacheConfig).build();

java.lang.IllegalArgumentException
at java.util.concurrent.ThreadPoolExecutor.<init>(ThreadPoolExecutor.java:826)
at java.util.concurrent.ThreadPoolExecutor.<init>(ThreadPoolExecutor.java:717)
at org.apache.http.impl.client.cache.AsynchronousValidator.<init>(AsynchronousValidator.java:74)
at org.apache.http.impl.client.cache.CachingHttpClientBuilder.createAsynchronousRevalidator(CachingHttpClientBuilder.java:106)
at org.apache.http.impl.client.cache.CachingHttpClientBuilder.decorateMainExec(CachingHttpClientBuilder.java:100)
at org.apache.http.impl.client.HttpClientBuilder.build(HttpClientBuilder.java:528)

According to the javadoc of method org.apache.http.impl.client.cache.CacheConfig.Builder.setAsynchronousWorkersMax(int) "a value of 0 disables background revalidations"