[LLDB][NFC] Refactor code extracting timestamp from StructuredData

[oontvoo]

No description provided.

[llvmbot]

@llvm/pr-subscribers-lldb

Author: Vy Nguyen (oontvoo)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/145954.diff

1 Files Affected:

• (modified) lldb/source/Core/Telemetry.cpp (+19-15)

diff --git a/lldb/source/Core/Telemetry.cpp b/lldb/source/Core/Telemetry.cpp
index 6434b11a63ad4..464c1d4071a73 100644
--- a/lldb/source/Core/Telemetry.cpp
+++ b/lldb/source/Core/Telemetry.cpp
@@ -119,6 +119,19 @@ llvm::Error TelemetryManager::preDispatch(TelemetryInfo *entry) {
   return llvm::Error::success();
 }
 
+// Helper for extracting time field from a Dictionary.
+static std::optional<std::chrono::nanoseconds>
+GetAsNanosec(StructuredData::Dictionary *dict, llvm::StringRef key) {
+  auto value = dict->GetValueForKey(key);
+  if (!value->IsValid()) {
+    LLDB_LOG(GetLog(LLDBLog::Object),
+             "Cannot determine {0} from client-telemetry entry", key);
+    return std::nullopt;
+  }
+
+  return std::chrono::nanoseconds(value->GetUnsignedIntegerValue(0));
+}
+
 void TelemetryManager::DispatchClientTelemetry(
     const lldb_private::StructuredDataImpl &entry, Debugger *debugger) {
   if (!m_config->enable_client_telemetry)
@@ -148,23 +161,14 @@ void TelemetryManager::DispatchClientTelemetry(
     LLDB_LOG(GetLog(LLDBLog::Object),
              "Cannot determine client_data from client-telemetry entry");
 
-  int64_t start_time;
-  if (dict->GetValueForKeyAsInteger("start_time", start_time)) {
-    client_info.start_time +=
-        std::chrono::nanoseconds(static_cast<size_t>(start_time));
-  } else {
-    LLDB_LOG(GetLog(LLDBLog::Object),
-             "Cannot determine start-time from client-telemetry entry");
-  }
+  auto start_time = GetAsNanosec(dict, "start_time");
+  if (start_time.has_value())
+    client_info.start_time += start_time.value();
 
-  int64_t end_time;
-  if (dict->GetValueForKeyAsInteger("end_time", end_time)) {
+  auto end_time = GetAsNanosec(dict, "end_time");
+  if (end_time.has_value()) {
     SteadyTimePoint epoch;
-    client_info.end_time =
-        epoch + std::chrono::nanoseconds(static_cast<size_t>(end_time));
-  } else {
-    LLDB_LOG(GetLog(LLDBLog::Object),
-             "Cannot determine end-time from client-telemetry entry");
+    client_info.end_time = epoch + end_time.value();
   }
 
   llvm::StringRef error_msg;

[bulbazord]

Same suggestion here.

[github-actions]

⚠️ C/C++ code formatter, clang-format found issues in your code. ⚠️

You can test this locally with the following command:

git-clang-format --diff HEAD~1 HEAD --extensions cpp -- lldb/source/Core/Telemetry.cpp

View the diff from clang-format here.

diff --git a/lldb/source/Core/Telemetry.cpp b/lldb/source/Core/Telemetry.cpp
index 5382c0e09..6d2848f89 100644
--- a/lldb/source/Core/Telemetry.cpp
+++ b/lldb/source/Core/Telemetry.cpp
@@ -162,7 +162,7 @@ void TelemetryManager::DispatchClientTelemetry(
              "Cannot determine client_data from client-telemetry entry");
 
   if (auto maybe_start_time = GetAsNanosec(dict, "start_time"))
-      client_info.start_time += *maybe_start_time;
+    client_info.start_time += *maybe_start_time;
 
   auto end_time = GetAsNanosec(dict, "end_time");
   if (end_time.has_value()) {