Merge pull request #22 from mozilla-services/feat/3

feat: setup a cadence error handler

src/server/metrics.rs

@@ -9,15 +9,18 @@ use server::ServerOptions;
 
 /// Create a cadence StatsdClient from the given options
 pub fn metrics_from_opts(opts: &ServerOptions) -> Result<StatsdClient> {
-    Ok(if let Some(statsd_host) = opts.statsd_host.as_ref() {
+    let builder = if let Some(statsd_host) = opts.statsd_host.as_ref() {
         let socket = UdpSocket::bind("0.0.0.0:0")?;
         socket.set_nonblocking(true)?;
 
         let host = (statsd_host.as_str(), opts.statsd_port);
         let udp_sink = BufferedUdpMetricSink::from(host, socket)?;
         let sink = QueuingMetricSink::from(udp_sink);
-        StatsdClient::from_sink("autopush", sink)
+        StatsdClient::builder("autopush", sink)
     } else {
-        StatsdClient::from_sink("autopush", NopMetricSink)
-    })
+        StatsdClient::builder("autopush", NopMetricSink)
+    };
+    Ok(builder
+        .with_error_handler(|err| error!("Metrics send error: {}", err))
+        .build())
 }