Add protolog support to Quickstep

Flag: EXEMPT changes cannot be flagged
Bug: 293182501
Test: launcher builds
Doc: go/launcher-protolog-support
Change-Id: I302b442b99165c9591b9349ea200285a5b9c074c
diff --git a/Android.bp b/Android.bp
index 4e1c9d3..9d7aa73 100644
--- a/Android.bp
+++ b/Android.bp
@@ -64,11 +64,74 @@
 filegroup {
     name: "launcher-quickstep-src",
     srcs: [
-        "quickstep/src/**/*.java",
         "quickstep/src/**/*.kt",
+        "quickstep/src/**/*.java",
+        ":launcher-quickstep-processed-protolog-src",
     ],
 }
 
+// Launcher ProtoLog support
+filegroup {
+    name: "launcher-quickstep-unprocessed-protolog-src",
+    srcs: [
+        "quickstep/src_protolog/**/*.java",
+    ],
+}
+
+java_library {
+    name: "launcher-quickstep_protolog-groups",
+    srcs: [
+        "quickstep/src_protolog/**/*.java",
+    ],
+    static_libs: [
+        "protolog-group",
+        "androidx.annotation_annotation",
+        "com_android_launcher3_flags_lib",
+    ],
+}
+
+genrule {
+    name: "launcher-quickstep-processed-protolog-src",
+    srcs: [
+        ":protolog-impl",
+        ":launcher-quickstep-unprocessed-protolog-src",
+        ":launcher-quickstep_protolog-groups",
+    ],
+    tools: ["protologtool"],
+    cmd: "$(location protologtool) transform-protolog-calls " +
+        "--protolog-class com.android.internal.protolog.common.ProtoLog " +
+        "--loggroups-class com.android.quickstep.util.QuickstepProtoLogGroup " +
+        "--loggroups-jar $(location :launcher-quickstep_protolog-groups) " +
+        "--viewer-config-file-path /system_ext/etc/launcher.quickstep.protolog.pb " +
+        "--output-srcjar $(out) " +
+        "$(locations :launcher-quickstep-unprocessed-protolog-src)",
+    out: ["launcher.quickstep.protolog.srcjar"],
+}
+
+genrule {
+    name: "gen-launcher.quickstep.protolog.pb",
+    srcs: [
+        ":launcher-quickstep-unprocessed-protolog-src",
+        ":launcher-quickstep_protolog-groups",
+    ],
+    tools: ["protologtool"],
+    cmd: "$(location protologtool) generate-viewer-config " +
+        "--protolog-class com.android.internal.protolog.common.ProtoLog " +
+        "--loggroups-class com.android.quickstep.util.QuickstepProtoLogGroup " +
+        "--loggroups-jar $(location :launcher-quickstep_protolog-groups) " +
+        "--viewer-config-type proto " +
+        "--viewer-config $(out) " +
+        "$(locations :launcher-quickstep-unprocessed-protolog-src)",
+    out: ["launcher.quickstep.protolog.pb"],
+}
+
+prebuilt_etc {
+    name: "launcher.quickstep.protolog.pb",
+    system_ext_specific: true,
+    src: ":gen-launcher.quickstep.protolog.pb",
+    filename_from_src: true,
+}
+
 // Source code for quickstep dagger
 filegroup {
     name: "launcher-quickstep-dagger",
@@ -405,6 +468,7 @@
         "SystemUISharedLib",
         "SettingsLibSettingsTheme",
         "dagger2",
+        "protolog-group",
     ],
     manifest: "quickstep/AndroidManifest.xml",
     min_sdk_version: "current",
@@ -503,7 +567,10 @@
         "Launcher2",
         "Launcher3",
     ],
-    required: ["privapp_whitelist_com.android.launcher3"],
+    required: [
+        "privapp_whitelist_com.android.launcher3",
+        "launcher.quickstep.protolog.pb",
+    ],
 
     resource_dirs: ["quickstep/res"],
 
diff --git a/proguard.flags b/proguard.flags
index 31edd8d..da00c00 100644
--- a/proguard.flags
+++ b/proguard.flags
@@ -57,3 +57,7 @@
 -keep class com.android.quickstep.** {
   *;
 }
+
+-keep class com.android.internal.protolog.** {
+  *;
+}
diff --git a/quickstep/src/com/android/quickstep/QuickstepProcessInitializer.java b/quickstep/src/com/android/quickstep/QuickstepProcessInitializer.java
index f4e68dc..334bead 100644
--- a/quickstep/src/com/android/quickstep/QuickstepProcessInitializer.java
+++ b/quickstep/src/com/android/quickstep/QuickstepProcessInitializer.java
@@ -25,6 +25,7 @@
 
 import com.android.launcher3.BuildConfig;
 import com.android.launcher3.MainProcessInitializer;
+import com.android.quickstep.util.QuickstepProtoLogGroup;
 import com.android.systemui.shared.system.InteractionJankMonitorWrapper;
 
 @SuppressWarnings("unused")
@@ -69,5 +70,7 @@
                     call.descriptor + " called on main thread under " + call.activeTrace
                             + " stackTrace: " + call.stackTrace));
         }
+
+        QuickstepProtoLogGroup.initProtoLog();
     }
 }
diff --git a/quickstep/src_protolog/com/android/quickstep/util/QuickstepProtoLogGroup.java b/quickstep/src_protolog/com/android/quickstep/util/QuickstepProtoLogGroup.java
new file mode 100644
index 0000000..d0863f8
--- /dev/null
+++ b/quickstep/src_protolog/com/android/quickstep/util/QuickstepProtoLogGroup.java
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2024 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.quickstep.util;
+
+import androidx.annotation.NonNull;
+
+import com.android.internal.protolog.ProtoLog;
+import com.android.internal.protolog.common.IProtoLogGroup;
+
+import java.util.UUID;
+
+/** Enums used to interface with the ProtoLog API. */
+public enum QuickstepProtoLogGroup implements IProtoLogGroup {
+
+    ACTIVE_GESTURE_LOG(true, true, false, "ActiveGestureLog");
+
+    private final boolean mEnabled;
+    private volatile boolean mLogToProto;
+    private volatile boolean mLogToLogcat;
+    private final @NonNull String mTag;
+
+    public static void initProtoLog() {
+        ProtoLog.init(QuickstepProtoLogGroup.values());
+    }
+
+    /**
+     * @param enabled     set to false to exclude all log statements for this group from
+     *                    compilation,
+     *                    they will not be available in runtime.
+     * @param logToProto  enable binary logging for the group
+     * @param logToLogcat enable text logging for the group
+     * @param tag         name of the source of the logged message
+     */
+    QuickstepProtoLogGroup(
+            boolean enabled, boolean logToProto, boolean logToLogcat, @NonNull String tag) {
+        this.mEnabled = enabled;
+        this.mLogToProto = logToProto;
+        this.mLogToLogcat = logToLogcat;
+        this.mTag = tag;
+    }
+
+    @Override
+    public boolean isEnabled() {
+        return mEnabled;
+    }
+
+    @Override
+    public boolean isLogToProto() {
+        return mLogToProto;
+    }
+
+    @Override
+    public boolean isLogToLogcat() {
+        return mLogToLogcat;
+    }
+
+    @Override
+    public boolean isLogToAny() {
+        return mLogToLogcat || mLogToProto;
+    }
+
+    @Override
+    public int getId() {
+        return Constants.LOG_START_ID + this.ordinal();
+    }
+
+    @Override
+    public @NonNull String getTag() {
+        return mTag;
+    }
+
+    @Override
+    public void setLogToProto(boolean logToProto) {
+        this.mLogToProto = logToProto;
+    }
+
+    @Override
+    public void setLogToLogcat(boolean logToLogcat) {
+        this.mLogToLogcat = logToLogcat;
+    }
+
+    private static final class Constants {
+
+        private static final int LOG_START_ID =
+                (int) (UUID.nameUUIDFromBytes(QuickstepProtoLogGroup.class.getName().getBytes())
+                        .getMostSignificantBits() % Integer.MAX_VALUE);
+    }
+}