print log message for values retrieved from configstore

This CL adds a code for printing log messages in clients-side utility
library functions (getXXX) for configstore so that the developer can
figure out which configuration values are actually retrieved from the configstore.

Bug: 36275627
Test: Built and check the log message appears

Change-Id: I7d5d80ca7a0317816c71016e013f9e73ad23ee08
Merged-In: I2c0895f8afbbb2947b62164acaf62a491c451dc0
(cherry picked from commit 0dc72ecbb798971d6f394d7f4dbc9d1f4006da5f)
diff --git a/configstore/utils/ConfigStoreUtils.cpp b/configstore/utils/ConfigStoreUtils.cpp
new file mode 100644
index 0000000..5a1fb42
--- /dev/null
+++ b/configstore/utils/ConfigStoreUtils.cpp
@@ -0,0 +1,40 @@
+//
+// 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.
+//
+
+#define LOG_TAG "ConfigStore"
+
+#include <android-base/logging.h>
+#include <configstore/Utils.h>
+
+namespace android {
+namespace hardware {
+namespace details {
+
+bool wouldLogInfo() {
+    return WOULD_LOG(INFO);
+}
+
+void logAlwaysInfo(const std::string& message) {
+    LOG(INFO) << message;
+}
+
+void logAlwaysError(const std::string& message) {
+    LOG(ERROR) << message;
+}
+
+}  // namespace details
+}  // namespace hardware
+}  // namespace android