tracing::TagScope Class Reference

#include <userver/tracing/tag_scope.hpp>

Detailed Description

RAII object that calls Span::AddTag/Span::AddTagFrozen function in constructor and reverts these actions in destructor.

Example usage:

    tracing::Span myspan{"myspan"};
    myspan.AddTag("key", "value");
    {
        const tracing::TagScope tag{myspan, "key", "2value2"};
 
        LOG_INFO() << "1";
        logging::LogFlush();
        const auto logs = GetStreamString();
        ASSERT_THAT(logs, testing::Not(testing::HasSubstr("key=value")));
        ASSERT_THAT(logs, testing::HasSubstr("key=2value2"));
    }
    ClearLog();
 
    LOG_INFO() << "1";
    logging::LogFlush();
    const auto logs = GetStreamString();
    ASSERT_THAT(logs, testing::HasSubstr("key=value"));
    ASSERT_THAT(logs, testing::Not(testing::HasSubstr("key=2value2")));

Definition at line 20 of file tag_scope.hpp.

Public Member Functions
	TagScope (std::string key, logging::LogExtra::Value value, logging::LogExtra::ExtendType extend_type=logging::LogExtra::ExtendType::kNormal)
	TagScope (Span &parent, std::string key, logging::LogExtra::Value value, logging::LogExtra::ExtendType extend_type=logging::LogExtra::ExtendType::kNormal)
	TagScope (logging::LogExtra &&extra)
	TagScope (Span &parent, logging::LogExtra &&extra)
	TagScope (const TagScope &other)=delete
TagScope &	operator= (const TagScope &other)=delete
	TagScope (TagScope &&other)=delete
TagScope &	operator= (TagScope &&other)=delete

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The documentation for this class was generated from the following file:

• userver/tracing/tag_scope.hpp