Method refreshToken

credentials/jwt/token_file_call_creds.go:136–145

refreshToken reads the token from file and updates the cached data.

()

// refreshToken reads the token from file and updates the cached data.
func (c *jwtTokenFileCallCreds) refreshToken() {
	// Deliberately not locking c.mu here. This way other RPCs can proceed
	// while we read the token. This is per gRFC A97.
	token, expiry, err := c.fileReader.readToken()

	c.mu.Lock()
	defer c.mu.Unlock()
	c.updateCacheLocked(token, expiry, err)
	c.pendingRefresh = false
}

// updateCacheLocked updates the cached token, expiry, and error state.
// If an error is provided, it determines whether to set it as an UNAVAILABLE