Metrics
Mind the gap.
The metrics-httpclient module provides InstrumentedHttpClientConnManager and
InstrumentedHttpClients, two instrumented versions of Apache HttpClient 4.x classes.
InstrumentedHttpClientConnManager is a thread-safe HttpClientConnectionManager implementation which
measures the number of open connections in the pool and the rate at which new connections are
opened.
InstrumentedHttpClients follows the HttpClients builder pattern and adds per-HTTP method timers for
HTTP requests.
The default per-method metric naming and scoping strategy can be overridden by passing an
implementation of HttpClientMetricNameStrategy to the InstrumentedHttpClients.createDefault method.
A number of pre-rolled strategies are available, e.g.:
HttpClient client = InstrumentedHttpClients.createDefault(registry, HttpClientMetricNameStrategies.HOST_AND_METHOD);