Move C++ SDK and Realtime Database logging APIs to public headers.

API review:
https://docs.google.com/document/d/1MvRtzoIccB1Vm8_x4pvWhI2yNrbwozS28yFITtQNVXk/edit#

PiperOrigin-RevId: 252675402

Author: smiles

app/src/include/firebase/log.h

@@ -42,6 +42,20 @@ enum LogLevel {
   kLogLevelAssert,
 };
 
+#if defined(INTERNAL_EXPERIMENTAL) || defined(SWIG)
+/// @brief Sets the logging verbosity.
+/// All log messages at or above the specific log level.
+///
+/// @param[in] log_level Log level to display, by default this is set to
+/// kLogLevelInfo.
+void SetLogLevel(LogLevel level);
+
+/// @brief Gets the logging verbosity.
+///
+/// @return Get the currently configured logging verbosity.
+LogLevel GetLogLevel();
+#endif  // defined(INTERNAL_EXPERIMENTAL) || defined(SWIG)
+
 /// @endcond
 
 // NOLINTNEXTLINE - allow namespace overridden

app/src/log.cc

@@ -141,16 +141,22 @@ static void LogMessageWithCallbackV(LogLevel log_level, const char* format,
   va_copy(log_to_file_args, args);
   LogToFile(log_level, format, log_to_file_args);
 #endif  // FIREBASE_LOG_TO_FILE
-  if (log_level < LogGetLevel()) return;
+  if (log_level < GetLogLevel()) return;
 
   static char log_buffer[512] = {0};
   vsnprintf(log_buffer, sizeof(log_buffer) - 1, format, args);
   g_log_callback(log_level, log_buffer, g_log_callback_data);
 }
 
-void LogSetLevel(LogLevel level) { g_log_level = level; }
+void SetLogLevel(LogLevel level) {
+  g_log_level = level;
+}
+
+LogLevel GetLogLevel() { return g_log_level; }
+
+void LogSetLevel(LogLevel level) { SetLogLevel(level); }
 
-LogLevel LogGetLevel() { return g_log_level; }
+LogLevel LogGetLevel() { return GetLogLevel(); }
 
 // Log a debug message to the system log.
 void LogDebug(const char* format, ...) {

app/src/log.h

@@ -19,7 +19,8 @@
 
 #include <stdarg.h>
 
-#include "firebase/log.h"
+#include "app/src/include/firebase/internal/common.h"
+#include "app/src/include/firebase/log.h"
 
 #if !defined(FIREBASE_NAMESPACE)
 #define FIREBASE_NAMESPACE firebase
@@ -30,9 +31,13 @@ namespace FIREBASE_NAMESPACE {
 // Common log methods.
 
 // All messages at or above the specified log level value are displayed.
-void LogSetLevel(LogLevel level);
+void SetLogLevel(LogLevel level);
 // Get the currently set log level.
-LogLevel LogGetLevel();
+LogLevel GetLogLevel();
+// Use firebase::SetLogLevel() instead.
+FIREBASE_DEPRECATED void LogSetLevel(LogLevel level);
+// Use firebase::GetLogLevel() instead.
+FIREBASE_DEPRECATED LogLevel LogGetLevel();
 // Log a debug message to the system log.
 void LogDebug(const char* format, ...);
 // Log an info message to the system log.

database/src/common/database.cc

@@ -195,5 +195,12 @@ void Database::set_persistence_enabled(bool enabled) {
   if (internal_) internal_->SetPersistenceEnabled(enabled);
 }
 
+#if defined(INTERNAL_EXPERIMENTAL) || defined(SWIG)
+void Database::set_log_level(LogLevel level) {
+}
+
+LogLevel Database::log_level() const { return kLogLevelInfo; }
+#endif  // defined(INTERNAL_EXPERIMENTAL) || defined(SWIG)
+
 }  // namespace database
 }  // namespace firebase

database/src/include/firebase/database.h

@@ -16,6 +16,7 @@
 #define FIREBASE_DATABASE_CLIENT_CPP_SRC_INCLUDE_FIREBASE_DATABASE_H_
 
 #include "firebase/app.h"
+#include "firebase/log.h"
 #include "firebase/internal/common.h"
 #include "firebase/database/common.h"
 #include "firebase/database/data_snapshot.h"
@@ -162,6 +163,18 @@ class Database {
   /// (disk) storage, or false to discard pending writes when the app exists.
   void set_persistence_enabled(bool enabled);
 
+#if defined(INTERNAL_EXPERIMENTAL) || defined(SWIG)
+  /// Set the log verbosity of this object.
+  ///
+  /// @param[in] log_level Log level, by default this is set to kLogLevelInfo.
+  void set_log_level(LogLevel log_level);
+
+  /// Get the log verbosity of this object.
+  ///
+  /// @return Get the currently configured logging verbosity.
+  LogLevel log_level() const;
+#endif  // defined(INTERNAL_EXPERIMENTAL) || defined(SWIG)
+
  private:
   friend Database* GetDatabaseInstance(::firebase::App* app, const char* url,
                                        InitResult* init_result_out);