Diagnostics from AsyncHttpClient

[stepancheg]

Requesting diagnostics API for AsyncHttpClients. E. g. methods like:

int getActiveRequestCount();
int getPooledConnectionCount();
int getHostCountWithPooledRequests();
List<String> getActiveRequests();
List<String> getPooledConnectionHosts();

and so on.

Currently I'm trying to find a leak in a program which looks like a leak in async-http-client to me (AsyncHttpClient reports I hit maxConnections limit while netstat reports much lower number of open connections). If async-http-client had such diagnostics API, I could verify my hypothesis. Currently I have no idea whether problem is in AsyncHttpClient or I use AsyncHttpClient API incorrectly.

Such API would be also very useful for monitoring (to plot e. g. active request count).

[slandelle]

Contribs welcome!

[stevenschlansker]

Thanks!