/** Captures the connection pool metrics. */
private void captureConnectionPoolMetrics(
ClientConnectionManager connectionManager, AWSRequestMetrics awsRequestMetrics) {
if (awsRequestMetrics.isEnabled() && connectionManager instanceof ConnPoolControl) {
ConnPoolControl<?> control = (ConnPoolControl<?>) connectionManager;
PoolStats stats = control.getTotalStats();
awsRequestMetrics.setCounter(
AWSRequestMetrics.Field.HttpClientPoolAvailableCount, stats.getAvailable());
awsRequestMetrics.setCounter(
AWSRequestMetrics.Field.HttpClientPoolLeasedCount, stats.getLeased());
awsRequestMetrics.setCounter(
AWSRequestMetrics.Field.HttpClientPoolPendingCount, stats.getPending());
}
}
private String formatStats(final HttpRoute route) {
final StringBuilder buf = new StringBuilder();
final PoolStats totals = this.pool.getTotalStats();
final PoolStats stats = this.pool.getStats(route);
buf.append("[total kept alive: ").append(totals.getAvailable()).append("; ");
buf.append("route allocated: ").append(stats.getLeased() + stats.getAvailable());
buf.append(" of ").append(stats.getMax()).append("; ");
buf.append("total allocated: ").append(totals.getLeased() + totals.getAvailable());
buf.append(" of ").append(totals.getMax()).append("]");
return buf.toString();
}
/**
* Forgive me these sins. This is the only way I can think of to determine the *actual* size of
* the connection pool without wrapping large quantities of the underlying client.
*
* <p>This whole method is cheating and full of bad examples. Don't copy this. You've been warned.
*/
private int getPoolSize(JestHttpClient client) throws Exception {
try {
Field fieldHttpClient = client.getClass().getDeclaredField("httpClient");
fieldHttpClient.setAccessible(true);
Object objInternalHttpClient = fieldHttpClient.get(client);
Field fieldConnectionManager =
objInternalHttpClient.getClass().getDeclaredField("connManager");
fieldConnectionManager.setAccessible(true);
PoolingHttpClientConnectionManager poolingHttpClientConnectionManager =
(PoolingHttpClientConnectionManager) fieldConnectionManager.get(objInternalHttpClient);
PoolStats poolStats = poolingHttpClientConnectionManager.getTotalStats();
return poolStats.getAvailable() + poolStats.getLeased();
} catch (Exception e) {
e.printStackTrace();
}
return -1;
}