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#include "labels.h"
#include <util/stream/output.h>
#include <util/string/split.h>
static void OutputLabels(IOutputStream& out, const NMonitoring::ILabels& labels) {
size_t i = 0;
out << '{';
for (const auto& label: labels) {
if (i++ > 0) {
out << TStringBuf(", ");
}
out << label;
}
out << '}';
}
template <>
void Out<NMonitoring::ILabelsPtr>(IOutputStream& out, const NMonitoring::ILabelsPtr& labels) {
OutputLabels(out, *labels);
}
template <>
void Out<NMonitoring::ILabels>(IOutputStream& out, const NMonitoring::ILabels& labels) {
OutputLabels(out, labels);
}
template <>
void Out<NMonitoring::ILabel>(IOutputStream& out, const NMonitoring::ILabel& labels) {
out << labels.Name() << "=" << labels.Value();
}
Y_MONLIB_DEFINE_LABELS_OUT(NMonitoring::TLabels);
Y_MONLIB_DEFINE_LABEL_OUT(NMonitoring::TLabel);
namespace NMonitoring {
bool TryLoadLabelsFromString(TStringBuf sb, ILabels& labels) {
if (sb.Empty()) {
return false;
}
if (!sb.StartsWith('{') || !sb.EndsWith('}')) {
return false;
}
sb.Skip(1);
sb.Chop(1);
if (sb.Empty()) {
return true;
}
bool ok = true;
TVector<std::pair<TStringBuf, TStringBuf>> rawLabels;
StringSplitter(sb).SplitBySet(" ,").SkipEmpty().Consume([&] (TStringBuf label) {
TStringBuf key, value;
ok &= label.TrySplit('=', key, value);
if (!ok) {
return;
}
rawLabels.emplace_back(key, value);
});
if (!ok) {
return false;
}
for (auto&& [k, v] : rawLabels) {
labels.Add(k, v);
}
return true;
}
bool TryLoadLabelsFromString(IInputStream& is, ILabels& labels) {
TString str = is.ReadAll();
return TryLoadLabelsFromString(str, labels);
}
} // namespace NMonitoring
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