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Fix empty metadata invalid json #205

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Fix empty metadata invalid json #205

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10 changes: 8 additions & 2 deletions libkineto/src/output_json.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -191,21 +191,27 @@ void ChromeTraceLogger::handleCpuActivity(
return;
}

auto op_metadata = op.getMetadata();
std::string separator = "";
if (op_metadata.find_first_not_of(" \t\n") != std::string::npos) {
separator = ",";
}
// clang-format off
traceOf_ << fmt::format(R"JSON(
{{
"ph": "X", "cat": "Operator", {},
"args": {{
"Device": {}, "External id": {},
"Trace name": "{}", "Trace iteration": {},
"Trace name": "{}", "Trace iteration": {} {}
{}
}}
}},)JSON",
traceActivityJson(op, ""),
// args
op.device, op.correlation,
span.name, span.iteration,
op.getMetadata());
separator,
op_metadata);
// clang-format on
}

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