thin-provisioning-tools/functional-tests/logging.scm
2017-08-24 15:54:03 +01:00

42 lines
913 B
Scheme

(library
(logging)
(export with-log-port-thunk
with-log-port
info
warn
log-error)
(import (chezscheme)
(fmt fmt)
(list-utils)
(utils))
(define log-port (current-error-port))
(define (with-log-port-thunk port thunk)
(fluid-let ((log-port port))
(thunk)))
(define-syntax with-log-port
(syntax-rules ()
((_ port b1 b2 ...)
(with-log-port-thunk port
(lambda ()
b1 b2 ...)))))
;; FIXME: include timestamp
(define (output-to-log level doc)
(fmt log-port
(dsp (symbol->string level))
(dsp ": ")
(apply cat (intersperse (dsp " ") doc))))
(define-syntax define-level
(syntax-rules ()
((_ sym level) (define (sym . doc) (output-to-log 'level doc)))))
(define-level info info)
(define-level warn warn)
(define-level log-error error))