[Lldb-commits] [lldb] [lldb][telemetry] Implement LLDB Telemetry (part 1) (PR #119716)

[Pavel Labath via lldb-commits]

================
@@ -0,0 +1,92 @@
+//===-- Telemetry.cpp -----------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+#include "lldb/Core/Telemetry.h"
+#include "lldb/Core/Debugger.h"
+#include "lldb/Target/Statistics.h"
+#include "lldb/Utility/ConstString.h"
+#include "lldb/Utility/LLDBLog.h"
+#include "lldb/Utility/UUID.h"
+#include "lldb/Version/Version.h"
+#include "lldb/lldb-enumerations.h"
+#include "lldb/lldb-forward.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/Twine.h"
+#include "llvm/Support/Error.h"
+#include "llvm/Support/RandomNumberGenerator.h"
+#include "llvm/Telemetry/Telemetry.h"
+#include <chrono>
+#include <cstdlib>
+#include <ctime>
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+namespace lldb_private {
+
+using ::llvm::Error;
+using ::llvm::telemetry::Destination;
+using ::llvm::telemetry::TelemetryInfo;
+
+static uint64_t ToNanosec(const SteadyTimePoint Point) {
+  return nanoseconds(Point.value().time_since_epoch()).count();
+}
+
+void LldbBaseTelemetryInfo::serialize(Serializer &serializer) const {
+  serializer.write("entry_kind", getKind());
+  serializer.write("session_id", SessionId);
+  serializer.write("start_time", ToNanosec(stats.start));
+  if (stats.end.has_value())
+    serializer.write("end_time", ToNanosec(stats.end.value()));
+  if (exit_desc.has_value()) {
+    serializer.write("exit_code", exit_desc->exit_code);
+    serializer.write("exit_msg", exit_desc->description);
+  }
+}
+
+static std::string MakeUUID(lldb_private::Debugger *debugger) {
+  std::string ret;
+  uint8_t random_bytes[16];
+  if (auto ec = llvm::getRandomBytes(random_bytes, 16)) {
+    LLDB_LOG(GetLog(LLDBLog::Object),
+             "Failed to generate random bytes for UUID: {0}", ec.message());
+    // fallback to using timestamp + debugger ID.
+    ret = std::to_string(
+              std::chrono::steady_clock::now().time_since_epoch().count()) +
+          "_" + std::to_string(debugger->GetID());
----------------
labath wrote:

```suggestion
    ret = llvm::formatv("{0}_{1}",
              std::chrono::steady_clock::now().time_since_epoch().count()), debugger->GetID());
```

https://github.com/llvm/llvm-project/pull/119716