Add metrics logging around get resumable upload url request.

libsignal/service/src/main/java/org/whispersystems/signalservice/internal/push/LoggingOkhttpEventListener.java

@@ -0,0 +1,144 @@
+package org.whispersystems.signalservice.internal.push;
+
+import org.whispersystems.libsignal.logging.Log;
+
+import java.io.IOException;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.Proxy;
+import java.util.List;
+import java.util.Locale;
+
+import okhttp3.Call;
+import okhttp3.Connection;
+import okhttp3.EventListener;
+import okhttp3.Handshake;
+import okhttp3.Protocol;
+import okhttp3.Request;
+import okhttp3.Response;
+
+/**
+ * Logs okhttp {@link Call} events for a single instance.
+ */
+@SuppressWarnings("NullableProblems") 
+final class LoggingOkhttpEventListener extends EventListener {
+  private static final String TAG = "LoggingOkhttpEventListe";
+
+  private long          callStartNanos;
+  private StringBuilder logMessage;
+
+  private void printEvent(String name) {
+    long nowNanos = System.nanoTime();
+    if (name.equals("callStart")) {
+      callStartNanos = nowNanos;
+      logMessage     = new StringBuilder();
+    }
+
+    long elapsedNanos = nowNanos - callStartNanos;
+    logMessage.append(String.format(Locale.US, "[%.3f %s] ", elapsedNanos / 1000000000d, name));
+
+    if (name.equals("callEnd") || name.equals("callFailed")) {
+      Log.d(TAG, logMessage.toString());
+    }
+  }
+
+  @Override
+  public void callStart(Call call) {
+    printEvent("callStart");
+  }
+
+  @Override
+  public void dnsStart(Call call, String domainName) {
+    printEvent("dnsStart");
+  }
+
+  @Override
+  public void dnsEnd(Call call, String domainName, List<InetAddress> inetAddressList) {
+    printEvent("dnsEnd");
+  }
+
+  @Override
+  public void connectStart(Call call, InetSocketAddress inetSocketAddress, Proxy proxy) {
+    printEvent("connectStart");
+  }
+
+  @Override
+  public void secureConnectStart(Call call) {
+    printEvent("secureConnectStart");
+  }
+
+  @Override
+  public void secureConnectEnd(Call call, Handshake handshake) {
+    printEvent("secureConnectEnd");
+  }
+
+  @Override
+  public void connectEnd(Call call, InetSocketAddress inetSocketAddress, Proxy proxy, Protocol protocol) {
+    printEvent("connectEnd");
+  }
+
+  @Override
+  public void connectFailed(Call call, InetSocketAddress inetSocketAddress, Proxy proxy, Protocol protocol, IOException ioException) {
+    printEvent("connectFailed");
+  }
+
+  @Override
+  public void connectionAcquired(Call call, Connection connection) {
+    printEvent("connectionAcquired");
+  }
+
+  @Override
+  public void connectionReleased(Call call, Connection connection) {
+    printEvent("connectionReleased");
+  }
+
+  @Override
+  public void requestHeadersStart(Call call) {
+    printEvent("requestHeadersStart");
+  }
+
+  @Override
+  public void requestHeadersEnd(Call call, Request request) {
+    printEvent("requestHeadersEnd");
+  }
+
+  @Override
+  public void requestBodyStart(Call call) {
+    printEvent("requestBodyStart");
+  }
+
+  @Override
+  public void requestBodyEnd(Call call, long byteCount) {
+    printEvent("requestBodyEnd");
+  }
+
+  @Override
+  public void responseHeadersStart(Call call) {
+    printEvent("responseHeadersStart");
+  }
+
+  @Override
+  public void responseHeadersEnd(Call call, Response response) {
+    printEvent("responseHeadersEnd");
+  }
+
+  @Override
+  public void responseBodyStart(Call call) {
+    printEvent("responseBodyStart");
+  }
+
+  @Override
+  public void responseBodyEnd(Call call, long byteCount) {
+    printEvent("responseBodyEnd");
+  }
+
+  @Override
+  public void callEnd(Call call) {
+    printEvent("callEnd");
+  }
+
+  @Override
+  public void callFailed(Call call, IOException ioException) {
+    printEvent("callFailed");
+  }
+}

libsignal/service/src/main/java/org/whispersystems/signalservice/internal/push/PushServiceSocket.java

@@ -1336,6 +1336,7 @@ public class PushServiceSocket {
                                                         .newBuilder()
                                                         .connectTimeout(soTimeoutMillis, TimeUnit.MILLISECONDS)
                                                         .readTimeout(soTimeoutMillis, TimeUnit.MILLISECONDS)
+                                                        .eventListener(new LoggingOkhttpEventListener())
                                                         .build();
 
     Request.Builder request = new Request.Builder().url(buildConfiguredUrl(connectionHolder, signedUrl))