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#ifndef LIGHTSTEP_TEXT_MAP_CARRIER
#define LIGHTSTEP_TEXT_MAP_CARRIER
#include <opentracing/propagation.h>
#include <string>
#include <unordered_map>
using opentracing::expected;
using opentracing::string_view;
using opentracing::TextMapReader;
using opentracing::TextMapWriter;
class TextMapCarrier : public TextMapReader, public TextMapWriter {
public:
TextMapCarrier(std::unordered_map<std::string, std::string>& text_map)
: text_map_(text_map) {}
expected<void> Set(string_view key, string_view value) const override {
text_map_[key] = value;
return {};
}
expected<void> ForeachKey(
std::function<expected<void>(string_view key, string_view value)> f)
const override {
for (const auto& key_value : text_map_) {
auto result = f(key_value.first, key_value.second);
if (!result) return result;
}
return {};
}
private:
std::unordered_map<std::string, std::string>& text_map_;
};
#endif // LIGHTSTEP_TEXT_MAP_CARRIER
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