intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 66 insertions, 0 deletions

diff --git a/library/cpp/logger/system.h b/library/cpp/logger/system.h
new file mode 100644
index 0000000000..b8c60b3023
--- /dev/null
+++ b/library/cpp/logger/system.h
@@ -0,0 +1,66 @@
+#pragma once
+
+#include "log.h"
+#include "backend.h"
+#include "priority.h"
+
+#define YSYSLOG(priority, ...) SysLogInstance().AddLog((priority), __VA_ARGS__)
+#define YSYSLOGINIT_FLAGS(ident, facility, flags)                                                                                    \
+    struct TLogIniter {                                                                                                              \
+        TLogIniter() {                                                                                                               \
+            SysLogInstance().ResetBackend(THolder<TLogBackend>(                                                                      \
+                (ident) ? (TLogBackend*)(new TSysLogBackend((ident), (facility), (flags))) : (TLogBackend*)(new TNullLogBackend())));\
+        }                                                                                                                            \
+    } Y_CAT(loginit, __LINE__);
+
+#define YSYSLOGINIT(ident, facility) YSYSLOGINIT_FLAGS((ident), (facility), 0)
+
+class TSysLogBackend: public TLogBackend {
+public:
+    enum EFacility {
+        TSYSLOG_LOCAL0 = 0,
+        TSYSLOG_LOCAL1 = 1,
+        TSYSLOG_LOCAL2 = 2,
+        TSYSLOG_LOCAL3 = 3,
+        TSYSLOG_LOCAL4 = 4,
+        TSYSLOG_LOCAL5 = 5,
+        TSYSLOG_LOCAL6 = 6,
+        TSYSLOG_LOCAL7 = 7
+    };
+
+    enum EFlags {
+        LogPerror = 1,
+        LogCons = 2
+    };
+
+    TSysLogBackend(const char* ident, EFacility facility, int flags = 0);
+    ~TSysLogBackend() override;
+
+    void WriteData(const TLogRecord& rec) override;
+    void ReopenLog() override;
+
+    virtual TString GetIdent() const {
+        return Ident;
+    }
+
+    virtual EFacility GetFacility() const {
+        return Facility;
+    }
+
+    virtual int GetFlags() const {
+        return Flags;
+    }
+
+protected:
+    int ELogPriority2SyslogPriority(ELogPriority priority);
+
+    TString Ident;
+    EFacility Facility;
+    int Flags;
+};
+
+/*
+ * return system-wide logger instance
+ * better do not use in real programs(instead of robot, of course)
+ */
+TLog& SysLogInstance();