You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
80 lines
3.8 KiB
Racket
80 lines
3.8 KiB
Racket
#lang racket/base
|
|
(require racket/file
|
|
racket/path
|
|
racket/place
|
|
racket/match
|
|
racket/format
|
|
"file-utils.rkt"
|
|
"cache-utils.rkt"
|
|
"log.rkt")
|
|
(provide preheat-cache)
|
|
|
|
(define (path-cached? path)
|
|
;; #true = already cached; #false = not cached
|
|
;; seems like it would be slow to load cache.rktd but it's not.
|
|
(define-values (_ private-cache-dir) (make-cache-dirs path))
|
|
(define cache-db-file (build-path private-cache-dir "cache.rktd"))
|
|
(and (file-exists? cache-db-file)
|
|
(hash-has-key? (file->value cache-db-file) (paths->key 'source path))))
|
|
|
|
(define (preheat-cache starting-dir [wants-parallel-setup? #false] [wants-dry-run? #false])
|
|
(unless (and (path-string? starting-dir) (directory-exists? starting-dir))
|
|
(raise-argument-error 'preheat-cache "directory" starting-dir))
|
|
|
|
;; if a file is already in the cache, no need to hit it again.
|
|
;; this allows partially completed preheat jobs to resume.
|
|
(define uncached-paths
|
|
(for/list ([path (in-directory starting-dir (λ (p) (not (special-path? p))))]
|
|
#:when (for/or ([proc (in-list (list preproc-source?
|
|
markup-source?
|
|
markdown-source?
|
|
pagetree-source?))])
|
|
(proc path))
|
|
#:unless (path-cached? path))
|
|
(simple-form-path path)))
|
|
|
|
(cond
|
|
[wants-dry-run? (for-each message uncached-paths)]
|
|
[(null? uncached-paths) (message "all cached files are up to date")]
|
|
[wants-parallel-setup?
|
|
|
|
(define job-count
|
|
(min
|
|
(length uncached-paths)
|
|
(match wants-parallel-setup?
|
|
[#true (processor-count)]
|
|
[(? exact-positive-integer? count) count]
|
|
[_ (raise-argument-error 'preheat-cache "exact positive integer" wants-parallel-setup?)])))
|
|
|
|
(define worker-evts
|
|
(for/list ([wpidx (in-range job-count)])
|
|
(define wp
|
|
(place ch
|
|
(let loop ()
|
|
(define path (place-channel-put/get ch (list 'want-job)))
|
|
(place-channel-put ch (list 'job-finished path
|
|
(with-handlers ([exn:fail? (λ (e) #f)])
|
|
(path->hash path))))
|
|
(loop))))
|
|
(handle-evt wp (λ (val) (list* wpidx wp val)))))
|
|
|
|
(let loop ([paths uncached-paths][actives null])
|
|
(unless (and (null? paths) (null? actives))
|
|
(match (apply sync worker-evts)
|
|
[(list wpidx wp 'want-job)
|
|
(match paths
|
|
[(? null?) (loop null actives)]
|
|
[(cons path rest)
|
|
(place-channel-put wp path)
|
|
(message (format "caching @ job ~a: ~a" (~r (add1 wpidx) #:min-width (string-length (~r job-count)) #:pad-string " ") (find-relative-path starting-dir path)))
|
|
(loop rest (cons wpidx actives))])]
|
|
[(list wpidx wp 'job-finished path result)
|
|
(if result
|
|
(cache-ref! (paths->key 'source path) (λ () result))
|
|
(message (format "caching failed on job ~a: ~a" (add1 wpidx) (find-relative-path starting-dir path))))
|
|
(loop paths (remq wpidx actives))])))]
|
|
[else (for ([path (in-list uncached-paths)])
|
|
(message (format "caching: ~a" (find-relative-path starting-dir path)))
|
|
(match (with-handlers ([exn:fail? (λ (e) #f)]) (path->hash path))
|
|
[#false (message (format "caching failed: ~a" (find-relative-path starting-dir path)))]
|
|
[result (cache-ref! (paths->key 'source path) (λ () result))]))])) |