Replace thread-let with thread-utils
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9 changed files with 255 additions and 215 deletions
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@ -4,8 +4,6 @@
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(provide
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; help make a nested if. if/in will gain the same false form of its containing if/out.
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if/out
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; let, but the value for each variable is evaluated within a thread
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thread-let
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; cond, but values can be defined between conditions
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cond/var
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; wrap sql statements into lambdas so they can be executed during migration
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@ -25,7 +23,6 @@
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(provide
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transform-if/out
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transform-thread-let
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transform/out-cond/var)
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(define (transform-if/out stx)
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@ -51,26 +48,6 @@
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[#t node])))
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(datum->syntax stx (cons 'if result)))
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(define (transform-thread-let stx)
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(define tree (cdr (syntax->datum stx)))
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(define defs (car tree))
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(define forms (cdr tree))
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(when (eq? (length forms) 0)
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(error (format "thread-let: bad syntax (need some forms to execute after the threads)~n forms: ~a" forms)))
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(define counter (build-list (length defs) values))
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(datum->syntax
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stx
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`(let ([chv (build-vector ,(length defs) (λ (_) (make-channel)))])
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,@(map (λ (n)
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(define def (list-ref defs n))
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`(thread (λ () (channel-put (vector-ref chv ,n) (let _ () ,@(cdr def))))))
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counter)
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(let ,(map (λ (n)
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(define def (list-ref defs n))
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`(,(car def) (channel-get (vector-ref chv ,n))))
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counter)
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,@forms))))
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(define (transform/out-cond/var stx)
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(define tree (transform-cond/var (cdr (syntax->datum stx))))
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(datum->syntax
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@ -119,35 +96,6 @@
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(check-equal? (if/out #t (if/in #f 'yes) 'no) 'no)
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(check-equal? (if/out #f (if/in #f 'yes) 'no) 'no))
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(define-syntax (thread-let stx)
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(transform-thread-let stx))
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(module+ test
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; check that it is transformed as expected
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(check-syntax-equal?
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(transform-thread-let
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#'(thread-let ([a (hey "this is a")]
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[b (hey "this is b")])
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(list a b)))
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#'(let ([chv (build-vector 2 (λ (_) (make-channel)))])
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(thread (λ () (channel-put (vector-ref chv 0) (let _ () (hey "this is a")))))
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(thread (λ () (channel-put (vector-ref chv 1) (let _ () (hey "this is b")))))
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(let ([a (channel-get (vector-ref chv 0))]
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[b (channel-get (vector-ref chv 1))])
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(list a b))))
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; check that they actually execute concurrently
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(define ch (make-channel))
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(check-equal? (thread-let ([a (begin
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(channel-put ch 'a)
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(channel-get ch))]
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[b (begin0
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(channel-get ch)
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(channel-put ch 'b))])
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(list a b))
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'(b a))
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; check that it assigns the correct value to the correct variable
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(check-equal? (thread-let ([a (sleep 0) 'a] [b 'b]) (list a b))
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'(a b)))
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(define-syntax (cond/var stx)
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(transform/out-cond/var stx))
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(module+ test
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72
lib/thread-utils.rkt
Normal file
72
lib/thread-utils.rkt
Normal file
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@ -0,0 +1,72 @@
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#lang racket/base
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(require (prefix-in easy: net/http-easy)
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"../src/data.rkt"
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"xexpr-utils.rkt")
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(provide
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thread-values)
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(module+ test
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(require rackunit))
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(define (thread-values . thunks)
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(parameterize-break #t
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(define the-exn (box #f))
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(define original-thread (current-thread))
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(define (break e)
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(when (box-cas! the-exn #f e)
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(break-thread original-thread))
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(sleep 0))
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(define-values (threads channels)
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(for/fold ([ts null]
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[chs null]
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#:result (values (reverse ts) (reverse chs)))
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([th thunks])
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(define ch (make-channel))
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(define t
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(thread (λ ()
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(with-handlers ([exn? break])
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(channel-put ch (th))))))
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(values (cons t ts) (cons ch chs))))
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(apply
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values
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(with-handlers ([exn:break? (λ (_)
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(for ([t threads]) (kill-thread t))
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(if (unbox the-exn)
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(raise (unbox the-exn))
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(error 'thread-values "a thread broke, but without reporting its exception")))])
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(for/list ([ch channels])
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(channel-get ch))))))
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(module+ test
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; check that they actually execute concurrently
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(define ch (make-channel))
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(check-equal? (let-values ([(a b)
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(thread-values
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(λ ()
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(begin
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(channel-put ch 'a)
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(channel-get ch)))
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(λ ()
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(begin0
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(channel-get ch)
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(channel-put ch 'b))))])
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(list a b))
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'(b a))
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; check that it assigns the correct value to the correct variable
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(check-equal? (let-values ([(a b)
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(thread-values
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(λ () (sleep 0) 'a)
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(λ () 'b))])
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(list a b))
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'(a b))
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; check that exceptions are passed to the original thread, and other threads are killed
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;; TODO: if the other thread was making an HTTP request, could it be left stuck open by the kill?
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(check-equal? (let* ([x "!"]
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[res
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(with-handlers ([exn:fail:user? (λ (e) (exn-message e))])
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(thread-values
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(λ () (sleep 0) (set! x "?") (println "this side effect should not happen"))
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(λ () (raise-user-error "catch me"))))])
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(string-append res x))
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"catch me!"))
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@ -277,8 +277,8 @@
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; check that noscript images are removed
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(check-equal? ((query-selector (λ (t a c) (eq? t 'noscript)) transformed)) #f)
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; benchmark
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(when (file-exists? "../misc/Frog.html")
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(with-input-from-file "../misc/Frog.html"
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(when (file-exists? "../storage/Frog.html")
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(with-input-from-file "../storage/Frog.html"
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(λ ()
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(define tree (html->xexp (current-input-port)))
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(time (length (update-tree-wiki tree "minecraft")))))))
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@ -201,13 +201,16 @@
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,(if (config-true? 'instance_is_official)
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(let ([balloon '(img (@ (src "/static/three-balloons.png") (class "bw-balloon") (title "Image Source: pngimg.com/image/4955 | License: CC BY-NC 4.0 | Modifications: Resized") (width "52") (height "56")))]
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[extension-eligible?
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(and req (let* ([ua-pair (assq 'user-agent (request-headers req))]
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[ua (string-downcase (cdr ua-pair))])
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;; everyone pretends to be chrome, so we do it in reverse
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;; this excludes common browsers that don't support the extension
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(and (not (string-contains? ua "edge/"))
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(not (string-contains? ua "edg/"))
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(not (string-contains? ua "mobile")))))])
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(cond/var
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[(not req) #f]
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(var ua-pair (assq 'user-agent (request-headers req)))
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[(not ua-pair) #f]
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(var ua (string-downcase (cdr ua-pair)))
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;; everyone pretends to be chrome, so we do it in reverse
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;; this excludes common browsers that don't support the extension
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[#t (and (not (string-contains? ua "edge/"))
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(not (string-contains? ua "edg/"))
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(not (string-contains? ua "mobile")))])])
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`(div (@ (class "bw-top-banner"))
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,balloon
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(div
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@ -28,7 +28,7 @@
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(hash-set! wikis-hash (symbol->string wikiname) w)))
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(module+ test
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(check-equal? (cadr (hash-ref wikis-hash "gallowmere"))
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"Gallowmere Historia"))
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"MediEvil Wiki"))
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(define (parse-table table)
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(define rows (query-selector (λ (t a c) (eq? t 'tr)) table))
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@ -17,6 +17,7 @@
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"data.rkt"
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"page-wiki.rkt"
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"../lib/syntax.rkt"
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"../lib/thread-utils.rkt"
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"../lib/url-utils.rkt"
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"whole-utils.rkt"
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"../lib/xexpr-utils.rkt")
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@ -69,55 +70,59 @@
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(define origin (format "https://~a.fandom.com" wikiname))
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(define source-url (format "~a/wiki/~a" origin prefixed-category))
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(thread-let
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([members-data (define dest-url
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(format "~a/api.php?~a"
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origin
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(params->query `(("action" . "query")
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("list" . "categorymembers")
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("cmtitle" . ,prefixed-category)
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("cmlimit" . "max")
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("formatversion" . "2")
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("format" . "json")))))
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(log-outgoing dest-url)
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(define dest-res (easy:get dest-url #:timeouts timeouts))
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(easy:response-json dest-res)]
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[page-data (define dest-url
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(format "~a/api.php?~a"
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origin
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(params->query `(("action" . "parse")
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("page" . ,prefixed-category)
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("prop" . "text|headhtml|langlinks")
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("formatversion" . "2")
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("format" . "json")))))
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(log-outgoing dest-url)
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(define dest-res (easy:get dest-url #:timeouts timeouts))
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(easy:response-json dest-res)]
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[siteinfo (siteinfo-fetch wikiname)])
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(define-values (members-data page-data siteinfo)
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(thread-values
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(λ ()
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(define dest-url
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(format "~a/api.php?~a"
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origin
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(params->query `(("action" . "query")
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("list" . "categorymembers")
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("cmtitle" . ,prefixed-category)
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("cmlimit" . "max")
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("formatversion" . "2")
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("format" . "json")))))
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(log-outgoing dest-url)
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(define dest-res (easy:get dest-url #:timeouts timeouts))
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(easy:response-json dest-res))
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(λ ()
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(define dest-url
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(format "~a/api.php?~a"
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origin
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(params->query `(("action" . "parse")
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("page" . ,prefixed-category)
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("prop" . "text|headhtml|langlinks")
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("formatversion" . "2")
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("format" . "json")))))
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(log-outgoing dest-url)
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(define dest-res (easy:get dest-url #:timeouts timeouts))
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(easy:response-json dest-res))
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(λ ()
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(siteinfo-fetch wikiname))))
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(define title (preprocess-html-wiki (jp "/parse/title" page-data prefixed-category)))
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(define page-html (preprocess-html-wiki (jp "/parse/text" page-data "")))
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(define page (html->xexp page-html))
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(define head-data ((head-data-getter wikiname) page-data))
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(define body (generate-results-page
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#:req req
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#:source-url source-url
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#:wikiname wikiname
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#:title title
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#:members-data members-data
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#:page page
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#:head-data head-data
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#:siteinfo siteinfo))
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(define title (preprocess-html-wiki (jp "/parse/title" page-data prefixed-category)))
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(define page-html (preprocess-html-wiki (jp "/parse/text" page-data "")))
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(define page (html->xexp page-html))
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(define head-data ((head-data-getter wikiname) page-data))
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(define body (generate-results-page
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#:req req
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#:source-url source-url
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#:wikiname wikiname
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#:title title
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#:members-data members-data
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#:page page
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#:head-data head-data
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#:siteinfo siteinfo))
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(when (config-true? 'debug)
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; used for its side effects
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; convert to string with error checking, error will be raised if xexp is invalid
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(xexp->html body))
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(response/output
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#:code 200
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#:headers (build-headers always-headers)
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(λ (out)
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(write-html body out))))))
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(when (config-true? 'debug)
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; used for its side effects
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; convert to string with error checking, error will be raised if xexp is invalid
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(xexp->html body))
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(response/output
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#:code 200
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#:headers (build-headers always-headers)
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(λ (out)
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(write-html body out)))))
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(module+ test
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(check-not-false ((query-selector (attribute-selector 'href "/test/wiki/Ankle_Monitor")
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(generate-results-page
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@ -17,6 +17,7 @@
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"data.rkt"
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"page-wiki.rkt"
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"../lib/syntax.rkt"
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"../lib/thread-utils.rkt"
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"../lib/url-utils.rkt"
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"whole-utils.rkt"
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"../lib/xexpr-utils.rkt")
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@ -108,42 +109,45 @@
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(define origin (format "https://~a.fandom.com" wikiname))
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(define source-url (format "~a/wiki/~a" origin prefixed-title))
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(thread-let
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([media-detail (define dest-url
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(format "~a/wikia.php?~a"
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origin
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(params->query `(("format" . "json") ("controller" . "Lightbox")
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("method" . "getMediaDetail")
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("fileTitle" . ,prefixed-title)))))
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(log-outgoing dest-url)
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(define dest-res (easy:get dest-url #:timeouts timeouts))
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(easy:response-json dest-res)]
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[siteinfo (siteinfo-fetch wikiname)])
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(if (not (jp "/exists" media-detail #f))
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(next-dispatcher)
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(response-handler
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(define file-title (jp "/fileTitle" media-detail ""))
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(define title
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(if (non-empty-string? file-title) (format "File:~a" file-title) prefixed-title))
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(define image-content-type
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(if (non-empty-string? (jp "/videoEmbedCode" media-detail ""))
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#f
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(url-content-type (jp "/imageUrl" media-detail))))
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(define body
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(generate-results-page #:req req
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#:source-url source-url
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#:wikiname wikiname
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#:title title
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#:media-detail media-detail
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#:image-content-type image-content-type
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#:siteinfo siteinfo))
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(when (config-true? 'debug)
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; used for its side effects
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; convert to string with error checking, error will be raised if xexp is invalid
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(xexp->html body))
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(response/output #:code 200
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#:headers (build-headers always-headers)
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(λ (out) (write-html body out))))))))
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(define-values (media-detail siteinfo)
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(thread-values
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(λ ()
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(define dest-url
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(format "~a/wikia.php?~a"
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origin
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(params->query `(("format" . "json") ("controller" . "Lightbox")
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("method" . "getMediaDetail")
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("fileTitle" . ,prefixed-title)))))
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(log-outgoing dest-url)
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(define dest-res (easy:get dest-url #:timeouts timeouts))
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(easy:response-json dest-res))
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(λ ()
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(siteinfo-fetch wikiname))))
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(if (not (jp "/exists" media-detail #f))
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(next-dispatcher)
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(response-handler
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(define file-title (jp "/fileTitle" media-detail ""))
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(define title
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(if (non-empty-string? file-title) (format "File:~a" file-title) prefixed-title))
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(define image-content-type
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(if (non-empty-string? (jp "/videoEmbedCode" media-detail ""))
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#f
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(url-content-type (jp "/imageUrl" media-detail))))
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(define body
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(generate-results-page #:req req
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#:source-url source-url
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#:wikiname wikiname
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#:title title
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#:media-detail media-detail
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#:image-content-type image-content-type
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#:siteinfo siteinfo))
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(when (config-true? 'debug)
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; used for its side effects
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; convert to string with error checking, error will be raised if xexp is invalid
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(xexp->html body))
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(response/output #:code 200
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#:headers (build-headers always-headers)
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(λ (out) (write-html body out)))))))
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(module+ test
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(parameterize ([(config-parameter 'strict_proxy) "true"])
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(check-equal? (get-media-html "https://static.wikia.nocookie.net/a" "image/jpeg")
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|
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|
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@ -14,6 +14,7 @@
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"config.rkt"
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"data.rkt"
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"../lib/syntax.rkt"
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"../lib/thread-utils.rkt"
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"../lib/url-utils.rkt"
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"whole-utils.rkt"
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"../lib/xexpr-utils.rkt")
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|
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@ -72,23 +73,26 @@
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("formatversion" . "2")
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("format" . "json")))))
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(thread-let
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([dest-res (log-outgoing dest-url)
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(easy:get dest-url #:timeouts timeouts)]
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[siteinfo (siteinfo-fetch wikiname)])
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(define-values (dest-res siteinfo)
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(thread-values
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(λ ()
|
||||
(log-outgoing dest-url)
|
||||
(easy:get dest-url #:timeouts timeouts))
|
||||
(λ ()
|
||||
(siteinfo-fetch wikiname))))
|
||||
|
||||
(define data (easy:response-json dest-res))
|
||||
(define data (easy:response-json dest-res))
|
||||
|
||||
(define body (generate-results-page req dest-url wikiname query data #:siteinfo siteinfo))
|
||||
(when (config-true? 'debug)
|
||||
; used for its side effects
|
||||
; convert to string with error checking, error will be raised if xexp is invalid
|
||||
(xexp->html body))
|
||||
(response/output
|
||||
#:code 200
|
||||
#:headers (build-headers always-headers)
|
||||
(λ (out)
|
||||
(write-html body out))))))
|
||||
(define body (generate-results-page req dest-url wikiname query data #:siteinfo siteinfo))
|
||||
(when (config-true? 'debug)
|
||||
; used for its side effects
|
||||
; convert to string with error checking, error will be raised if xexp is invalid
|
||||
(xexp->html body))
|
||||
(response/output
|
||||
#:code 200
|
||||
#:headers (build-headers always-headers)
|
||||
(λ (out)
|
||||
(write-html body out)))))
|
||||
(module+ test
|
||||
(parameterize ([(config-parameter 'feature_offline::only) "false"])
|
||||
(check-not-false ((query-selector (attribute-selector 'href "/test/wiki/Gacha_Capsule")
|
||||
|
|
|
|||
|
|
@ -19,6 +19,7 @@
|
|||
"data.rkt"
|
||||
"../lib/pure-utils.rkt"
|
||||
"../lib/syntax.rkt"
|
||||
"../lib/thread-utils.rkt"
|
||||
"../lib/tree-updater.rkt"
|
||||
"../lib/url-utils.rkt"
|
||||
"whole-utils.rkt"
|
||||
|
|
@ -41,59 +42,62 @@
|
|||
(define path (string-join (map path/param-path (cddr (url-path (request-uri req)))) "/"))
|
||||
(define source-url (format "https://~a.fandom.com/wiki/~a" wikiname path))
|
||||
|
||||
(thread-let
|
||||
([dest-res (define dest-url
|
||||
(format "~a/api.php?~a"
|
||||
origin
|
||||
(params->query `(("action" . "parse")
|
||||
("page" . ,path)
|
||||
("prop" . "text|headhtml|langlinks")
|
||||
("formatversion" . "2")
|
||||
("format" . "json")))))
|
||||
(log-outgoing dest-url)
|
||||
(easy:get dest-url
|
||||
#:timeouts timeouts
|
||||
#:headers `#hasheq((cookie . ,(format "theme=~a" (user-cookies^-theme user-cookies)))))]
|
||||
[siteinfo (siteinfo-fetch wikiname)])
|
||||
(define-values (dest-res siteinfo)
|
||||
(thread-values
|
||||
(λ ()
|
||||
(define dest-url
|
||||
(format "~a/api.php?~a"
|
||||
origin
|
||||
(params->query `(("action" . "parse")
|
||||
("page" . ,path)
|
||||
("prop" . "text|headhtml|langlinks")
|
||||
("formatversion" . "2")
|
||||
("format" . "json")))))
|
||||
(log-outgoing dest-url)
|
||||
(easy:get dest-url
|
||||
#:timeouts timeouts
|
||||
#:headers `#hasheq((cookie . ,(format "theme=~a" (user-cookies^-theme user-cookies))))))
|
||||
(λ ()
|
||||
(siteinfo-fetch wikiname))))
|
||||
|
||||
(cond
|
||||
[(eq? 200 (easy:response-status-code dest-res))
|
||||
(let* ([data (easy:response-json dest-res)]
|
||||
[title (jp "/parse/title" data "")]
|
||||
[page-html (jp "/parse/text" data "")]
|
||||
[page-html (preprocess-html-wiki page-html)]
|
||||
[page (html->xexp page-html)]
|
||||
[head-data ((head-data-getter wikiname) data)])
|
||||
(if (equal? "missingtitle" (jp "/error/code" data #f))
|
||||
(next-dispatcher)
|
||||
(response-handler
|
||||
(define body
|
||||
(generate-wiki-page
|
||||
(update-tree-wiki page wikiname)
|
||||
#:req req
|
||||
#:source-url source-url
|
||||
#:wikiname wikiname
|
||||
#:title title
|
||||
#:head-data head-data
|
||||
#:siteinfo siteinfo))
|
||||
(define redirect-msg ((query-selector (attribute-selector 'class "redirectMsg") body)))
|
||||
(define redirect-query-parameter (dict-ref (url-query (request-uri req)) 'redirect "yes"))
|
||||
(define headers
|
||||
(build-headers
|
||||
always-headers
|
||||
; redirect-query-parameter: only the string "no" is significant:
|
||||
; https://github.com/Wikia/app/blob/fe60579a53f16816d65dad1644363160a63206a6/includes/Wiki.php#L367
|
||||
(when (and redirect-msg
|
||||
(not (equal? redirect-query-parameter "no")))
|
||||
(let* ([dest (get-attribute 'href (bits->attributes ((query-selector (λ (t a c) (eq? t 'a)) redirect-msg))))]
|
||||
[value (bytes-append #"0;url=" (string->bytes/utf-8 dest))])
|
||||
(header #"Refresh" value)))))
|
||||
(when (config-true? 'debug)
|
||||
; used for its side effects
|
||||
; convert to string with error checking, error will be raised if xexp is invalid
|
||||
(xexp->html body))
|
||||
(response/output
|
||||
#:code 200
|
||||
#:headers headers
|
||||
(λ (out)
|
||||
(write-html body out))))))])))
|
||||
(cond
|
||||
[(eq? 200 (easy:response-status-code dest-res))
|
||||
(let* ([data (easy:response-json dest-res)]
|
||||
[title (jp "/parse/title" data "")]
|
||||
[page-html (jp "/parse/text" data "")]
|
||||
[page-html (preprocess-html-wiki page-html)]
|
||||
[page (html->xexp page-html)]
|
||||
[head-data ((head-data-getter wikiname) data)])
|
||||
(if (equal? "missingtitle" (jp "/error/code" data #f))
|
||||
(next-dispatcher)
|
||||
(response-handler
|
||||
(define body
|
||||
(generate-wiki-page
|
||||
(update-tree-wiki page wikiname)
|
||||
#:req req
|
||||
#:source-url source-url
|
||||
#:wikiname wikiname
|
||||
#:title title
|
||||
#:head-data head-data
|
||||
#:siteinfo siteinfo))
|
||||
(define redirect-msg ((query-selector (attribute-selector 'class "redirectMsg") body)))
|
||||
(define redirect-query-parameter (dict-ref (url-query (request-uri req)) 'redirect "yes"))
|
||||
(define headers
|
||||
(build-headers
|
||||
always-headers
|
||||
; redirect-query-parameter: only the string "no" is significant:
|
||||
; https://github.com/Wikia/app/blob/fe60579a53f16816d65dad1644363160a63206a6/includes/Wiki.php#L367
|
||||
(when (and redirect-msg
|
||||
(not (equal? redirect-query-parameter "no")))
|
||||
(let* ([dest (get-attribute 'href (bits->attributes ((query-selector (λ (t a c) (eq? t 'a)) redirect-msg))))]
|
||||
[value (bytes-append #"0;url=" (string->bytes/utf-8 dest))])
|
||||
(header #"Refresh" value)))))
|
||||
(when (config-true? 'debug)
|
||||
; used for its side effects
|
||||
; convert to string with error checking, error will be raised if xexp is invalid
|
||||
(xexp->html body))
|
||||
(response/output
|
||||
#:code 200
|
||||
#:headers headers
|
||||
(λ (out)
|
||||
(write-html body out))))))]))
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue