1 files changed, 155 insertions, 0 deletions
diff --git a/java/com/android/dialer/performancereport/PerformanceReport.java b/java/com/android/dialer/performancereport/PerformanceReport.java
new file mode 100644
index 000000000..27fd7485b
--- /dev/null
+++ b/java/com/android/dialer/performancereport/PerformanceReport.java
@@ -0,0 +1,155 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License
+ */
+
+package com.android.dialer.performancereport;
+
+import android.os.SystemClock;
+import android.support.annotation.Nullable;
+import android.support.v7.widget.RecyclerView;
+import android.widget.AbsListView;
+import com.android.dialer.common.LogUtil;
+import com.android.dialer.logging.UiAction;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+
+/** Tracks UI performance for a call. */
+public final class PerformanceReport {
+
+  private static final long INVALID_TIME = -1;
+  private static final long ACTIVE_DURATION = TimeUnit.MINUTES.toMillis(5);
+
+  private static final List<UiAction.Type> actions = new ArrayList<>();
+  private static final List<Long> actionTimestamps = new ArrayList<>();
+
+  private static final RecyclerView.OnScrollListener recordOnScrollListener =
+      new RecyclerView.OnScrollListener() {
+        @Override
+        public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
+          if (newState == RecyclerView.SCROLL_STATE_SETTLING) {
+            PerformanceReport.recordClick(UiAction.Type.SCROLL);
+          }
+          super.onScrollStateChanged(recyclerView, newState);
+        }
+      };
+
+  private static boolean recording = false;
+  private static long appLaunchTimeMillis = INVALID_TIME;
+  private static long firstClickTimeMillis = INVALID_TIME;
+  private static long lastActionTimeMillis = INVALID_TIME;
+
+  @Nullable private static UiAction.Type ignoreActionOnce = null;
+
+  private PerformanceReport() {}
+
+  public static void startRecording() {
+    LogUtil.enterBlock("PerformanceReport.startRecording");
+
+    appLaunchTimeMillis = SystemClock.elapsedRealtime();
+    lastActionTimeMillis = appLaunchTimeMillis;
+    if (!actions.isEmpty()) {
+      actions.clear();
+      actionTimestamps.clear();
+    }
+    recording = true;
+  }
+
+  public static void stopRecording() {
+    LogUtil.enterBlock("PerformanceReport.stopRecording");
+    recording = false;
+  }
+
+  public static void recordClick(UiAction.Type action) {
+    if (!recording) {
+      return;
+    }
+
+    if (action == ignoreActionOnce) {
+      LogUtil.i("PerformanceReport.recordClick", "%s is ignored", action.toString());
+      ignoreActionOnce = null;
+      return;
+    }
+    ignoreActionOnce = null;
+
+    LogUtil.v("PerformanceReport.recordClick", action.toString());
+
+    // Timeout
+    long currentTime = SystemClock.elapsedRealtime();
+    if (currentTime - lastActionTimeMillis > ACTIVE_DURATION) {
+      startRecording();
+      recordClick(action);
+      return;
+    }
+
+    lastActionTimeMillis = currentTime;
+    if (actions.isEmpty()) {
+      firstClickTimeMillis = currentTime;
+    }
+    actions.add(action);
+    actionTimestamps.add(currentTime - appLaunchTimeMillis);
+  }
+
+  public static void recordScrollStateChange(int scrollState) {
+    if (scrollState == AbsListView.OnScrollListener.SCROLL_STATE_TOUCH_SCROLL) {
+      recordClick(UiAction.Type.SCROLL);
+    }
+  }
+
+  public static void logOnScrollStateChange(RecyclerView recyclerView) {
+    // Remove the listener in case it was added before
+    recyclerView.removeOnScrollListener(recordOnScrollListener);
+    recyclerView.addOnScrollListener(recordOnScrollListener);
+  }
+
+  public static boolean isRecording() {
+    return recording;
+  }
+
+  public static long getTimeSinceAppLaunch() {
+    if (appLaunchTimeMillis == INVALID_TIME) {
+      return INVALID_TIME;
+    }
+    return SystemClock.elapsedRealtime() - appLaunchTimeMillis;
+  }
+
+  public static long getTimeSinceFirstClick() {
+    if (firstClickTimeMillis == INVALID_TIME) {
+      return INVALID_TIME;
+    }
+    return SystemClock.elapsedRealtime() - firstClickTimeMillis;
+  }
+
+  public static List<UiAction.Type> getActions() {
+    return actions;
+  }
+
+  public static List<Long> getActionTimestamps() {
+    return actionTimestamps;
+  }
+
+  @Nullable
+  public static UiAction.Type getIgnoreActionOnce() {
+    return ignoreActionOnce;
+  }
+
+  public static void setIgnoreActionOnce(@Nullable UiAction.Type ignoreActionOnce) {
+    PerformanceReport.ignoreActionOnce = ignoreActionOnce;
+    LogUtil.i(
+        "PerformanceReport.setIgnoreActionOnce",
+        "next action will be ignored once if it is %s",
+        ignoreActionOnce.toString());
+  }
+}