Allow debug logging of dispatcher's inbound events to be enabled on the fly
Enabling debug logs via adb commands required a reboot of the shell. In
order to debug flaky tests more easily, we allow raw event logs to be
enabled and disabled without the need for a restart on debuggable
builds.
We limit this ability to debuggable builds ensure there is no
performance overhead on user builds.
This change allows us to enable more verbose logging on flaky tests that
are hard to reproduce.
Bug: 193231132
Test: Manual, using adb command to enable debug logs on userdebug builds
Change-Id: Idf6f7fb35ad02e059582b1f0e7b3b2d006ff0730
diff --git a/services/inputflinger/dispatcher/DebugConfig.cpp b/services/inputflinger/dispatcher/DebugConfig.cpp
new file mode 100644
index 0000000..764194d
--- /dev/null
+++ b/services/inputflinger/dispatcher/DebugConfig.cpp
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2023 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.
+ */
+
+#include "DebugConfig.h"
+
+#include <android-base/properties.h>
+
+namespace android::inputdispatcher {
+
+const bool IS_DEBUGGABLE_BUILD =
+#if defined(__ANDROID__)
+ android::base::GetBoolProperty("ro.debuggable", false);
+#else
+ true;
+#endif
+
+bool debugInboundEventDetails() {
+ if (!IS_DEBUGGABLE_BUILD) {
+ static const bool DEBUG_INBOUND_EVENT_DETAILS =
+ __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "InboundEvent",
+ ANDROID_LOG_INFO);
+ return DEBUG_INBOUND_EVENT_DETAILS;
+ }
+ return __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "InboundEvent", ANDROID_LOG_INFO);
+}
+
+} // namespace android::inputdispatcher