function _M.inject()

in lib/skywalking/tracing_context.lua [162:175]

• 12 lines of code
• 3 McCabe index (conditional complexity)

function _M.inject(tracingContext, exitSpan, peer, correlation)
    Span.setPeer(exitSpan, peer)

    local injectableRef = SegmentRef.createInjectableRef(tracingContext, exitSpan)
    local correlationData = tracingContext.correlation
    if correlation then
        for name, value in pairs(correlation) do
            CorrelationContext.put(correlationData, name, value)
        end
    end

    ngx.req.set_header(CONTEXT_CARRIER_KEY, SegmentRef.serialize(injectableRef))
    ngx.req.set_header(CONTEXT_CORRELATION_KEY, CorrelationContext.serialize(correlationData))
end