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#include "start.h"
#include "all.h"
#include <google/protobuf/text_format.h>
#include <util/generic/singleton.h>
#include <util/stream/file.h>
#include <util/stream/output.h>
#include <util/system/env.h>
#include <stdlib.h>
using namespace NLWTrace;
namespace {
struct TTraceManagerHolder {
TManager TraceManager;
TTraceManagerHolder()
: TraceManager(*Singleton<TProbeRegistry>(), true)
{
}
};
void TraceFromEnv(TString path) {
TString script = TUnbufferedFileInput(path).ReadAll();
TQuery query;
bool ok = google::protobuf::TextFormat::ParseFromString(script, &query);
Y_VERIFY(ok, "failed to parse protobuf");
Singleton<TTraceManagerHolder>()->TraceManager.New("env", query);
}
} // anonymous namespace
void NLWTrace::StartLwtraceFromEnv() {
static bool started = false;
if (started) {
return;
} else {
started = true;
}
TString path = GetEnv("LWTRACE");
if (!path) {
return;
}
try {
TraceFromEnv(path);
} catch (...) {
Cerr << "failed to load lwtrace script: " << CurrentExceptionMessage() << "\n";
abort();
}
}
void NLWTrace::StartLwtraceFromEnv(std::function<void(TManager&)> prepare) {
TString path = GetEnv("LWTRACE");
if (Y_LIKELY(!path)) {
return;
}
try {
prepare(Singleton<TTraceManagerHolder>()->TraceManager);
TraceFromEnv(path);
} catch (...) {
Cerr << "failed to load lwtrace script: " << CurrentExceptionMessage() << "\n";
abort();
}
}
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