intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 19 insertions, 0 deletions

diff --git a/library/cpp/lwtrace/stderr_writer.cpp b/library/cpp/lwtrace/stderr_writer.cpp
new file mode 100644
index 00000000000..6e5654c3384
--- /dev/null
+++ b/library/cpp/lwtrace/stderr_writer.cpp
@@ -0,0 +1,19 @@
+#include "stderr_writer.h"
+
+#include <util/stream/str.h>
+
+using namespace NLWTrace;
+
+bool TStderrActionExecutor::DoExecute(TOrbit&, const TParams& params) {
+    TString ParamValues[LWTRACE_MAX_PARAMS];
+    Probe->Event.Signature.SerializeParams(params, ParamValues);
+
+    TStringStream ss;
+    ss << Probe->Event.GetProvider() << "." << Probe->Event.Name;
+    for (ui32 i = 0; i < Probe->Event.Signature.ParamCount; ++i) {
+        ss << " " << Probe->Event.Signature.ParamNames[i] << "=" << ParamValues[i];
+    }
+    ss << "\n";
+    Cerr << ss.Str();
+    return true;
+}