[XrdCl] Make it possible to tweak log settings in the default env

src/XrdCl/XrdClDefaultEnv.cc

@@ -221,6 +221,56 @@ namespace XrdCl
     return sLog;
   }
 
+  //----------------------------------------------------------------------------
+  // Set log level
+  //----------------------------------------------------------------------------
+  void DefaultEnv::SetLogLevel( const std::string &level )
+  {
+    Log *log = GetLog();
+    log->SetLevel( level );
+  }
+
+  //----------------------------------------------------------------------------
+  // Set log file
+  //----------------------------------------------------------------------------
+  bool DefaultEnv::SetLogFile( const std::string &filepath )
+  {
+    Log *log = GetLog();
+    LogOutFile *out = new LogOutFile();
+
+    if( out->Open( filepath ) )
+    {
+      log->SetOutput( out );
+      return true;
+    }
+
+    delete out;
+    return false;
+  }
+
+  //----------------------------------------------------------------------------
+  //! Set log mask.
+  //------------------------------------------------------------------------
+  void DefaultEnv::SetLogMask( const std::string &level,
+                               const std::string &mask )
+  {
+    Log *log = GetLog();
+    MaskTranslator translator;
+    uint64_t topicMask = translator.translateMask( mask );
+
+    if( level == "All" )
+    {
+      log->SetMask( Log::ErrorMsg,   topicMask );
+      log->SetMask( Log::WarningMsg, topicMask );
+      log->SetMask( Log::InfoMsg,    topicMask );
+      log->SetMask( Log::DebugMsg,   topicMask );
+      log->SetMask( Log::DumpMsg,    topicMask );
+      return;
+    }
+
+    log->SetMask( level, topicMask );
+  }
+
   //----------------------------------------------------------------------------
   // Get fork handler
   //----------------------------------------------------------------------------

src/XrdCl/XrdClDefaultEnv.hh

@@ -63,6 +63,45 @@ namespace XrdCl
       //------------------------------------------------------------------------
       static Log *GetLog();
 
+      //------------------------------------------------------------------------
+      //! Set log level
+      //!
+      //! @param level Dump, Debug, Info, Warning or Error
+      //------------------------------------------------------------------------
+      static void SetLogLevel( const std::string &level );
+
+      //------------------------------------------------------------------------
+      //! Set log file
+      //!
+      //! @param filepath path to the log file
+      //------------------------------------------------------------------------
+      static bool SetLogFile( const std::string &filepath );
+
+      //------------------------------------------------------------------------
+      //! Set log mask.
+      //! Determines which diagnostics topics should be printed. It's a
+      //! "|" separated list of topics. The first element may be "All" in which
+      //! case all the topics are enabled and the subsequent elements may turn
+      //! them off, or "None" in which case all the topics are disabled and
+      //! the subsequent flags may turn them on. If the topic name is prefixed
+      //! with "^", then it means that the topic should be disabled. If the
+      //! topic name is not prefixed, then it means that the topic should be
+      //! enabled.
+      //!
+      //! The default for each level is "All", except for the "Dump" level,
+      //! where the default is "All|^PollerMsg". This means that, at the
+      //! "Dump" level, all the topics but "PollerMsg" are enabled.
+      //!
+      //! Available topics: AppMsg, UtilityMsg, FileMsg, PollerMsg,
+      //! PostMasterMsg, XRootDTransportMsg, TaskMgrMsg, XRootDMsg,
+      //! FileSystemMsg, AsyncSockMsg
+      //!
+      //! @param level log level or "All" for all levels
+      //! @param mask  log mask
+      //------------------------------------------------------------------------
+      static void SetLogMask( const std::string &level,
+                              const std::string &mask );
+
       //------------------------------------------------------------------------
       //! Get the fork handler
       //------------------------------------------------------------------------