middleware

const (
	// HeaderGitalyCorrelationID is where GitLab Runner puts a job's correlation ID
	// on git HTTP requests. The runner sets it with
	// `git config http.extraHeader`, gated behind FF_USE_GITALY_CORRELATION_ID
	// (default true), and prints the same value in the job trace as
	// "Gitaly correlation ID: <id>". It is therefore the ID an operator has in hand
	// when a CI job fails with a git error.
	//
	// The value is the correlation ID of the runner's POST /api/v4/jobs/request
	// call — GitLab's X-Request-Id from that response, or a UUID the runner minted
	// itself if the response carried none. It is held on the job, so it stays
	// constant across every git request the job makes, including fetch retries.
	//
	// The runner spells it X-Gitaly-Correlation-ID on the wire. Written here in Go's
	// canonical form instead, which Header.Get and Header.Set both normalise to, so
	// the two match.
	HeaderGitalyCorrelationID = "X-Gitaly-Correlation-Id"
)