; - d | download
; - u | upload
; - calls user-configured command to upload user's own feed file to their server
+;
+; Looks like a better CLI parser than "racket/cmdline":
+; https://docs.racket-lang.org/natural-cli/
#lang racket
(require rfc3339-old)
(module+ test
- (require rackunit))
+ (require rackunit))
(struct msg (ts_epoch ts_rfc3339 nick uri text))
(struct feed (nick uri))
(define (concurrent-filter-map num_workers f xs)
+ ; TODO preserve order of elements OR communicate that reorder is expected
; TODO switch from mailboxes to channels
(define (make-worker id f)
(define parent (current-thread))
(define (work)
(thread-send parent (cons 'next self))
(match (thread-receive)
- ['done (thread-send parent (cons 'exit id))]
- [(cons 'unit x) (begin
- (define y (f x))
- (when y (thread-send parent (cons 'result y)))
- (work))]))
+ ['done (thread-send parent (cons 'exit id))]
+ [(cons 'unit x) (begin
+ (define y (f x))
+ (when y (thread-send parent (cons 'result y)))
+ (work))]))
(work)))
(define (dispatch ws xs ys)
(if (empty? ws)
- ys
- (match (thread-receive)
- [(cons 'exit w) (dispatch (remove w ws =) xs ys)]
- [(cons 'result y) (dispatch ws xs (cons y ys))]
- [(cons 'next thd) (match xs
- ['() (begin
- (thread-send thd 'done)
- (dispatch ws xs ys))]
- [(cons x xs) (begin
- (thread-send thd (cons 'unit x))
- (dispatch ws xs ys))])])))
+ ys
+ (match (thread-receive)
+ [(cons 'exit w) (dispatch (remove w ws =) xs ys)]
+ [(cons 'result y) (dispatch ws xs (cons y ys))]
+ [(cons 'next thd) (match xs
+ ['() (begin
+ (thread-send thd 'done)
+ (dispatch ws xs ys))]
+ [(cons x xs) (begin
+ (thread-send thd (cons 'unit x))
+ (dispatch ws xs ys))])])))
(define workers (range num_workers))
(define threads (map (λ (id) (thread (make-worker id f))) workers))
(define results (dispatch workers xs '()))
(for-each thread-wait threads)
results)
+(module+ test
+ (let* ([f (λ (x) (if (even? x) x #f))]
+ [xs (range 11)]
+ [actual (sort (concurrent-filter-map 10 f xs) <)]
+ [expected (sort ( filter-map f xs) <)])
+ (check-equal? actual expected "concurrent-filter-map")))
+
(define (msg-print out-format odd msg)
(printf
(match out-format
- ['single-line "~a \033[1;37m<~a ~a>\033[0m \033[0;~am~a\033[0m~n"]
- ['multi-line "~a~n\033[1;37m<~a ~a>\033[0m~n\033[0;~am~a\033[0m~n~n"]
- [_ (raise (format "Invalid output format: ~a" out-format))])
+ ['single-line "~a \033[1;37m<~a ~a>\033[0m \033[0;~am~a\033[0m~n"]
+ ['multi-line "~a~n\033[1;37m<~a ~a>\033[0m~n\033[0;~am~a\033[0m~n~n"]
+ [_ (raise (format "Invalid output format: ~a" out-format))])
(date->string (seconds->date [msg-ts_epoch msg]) #t)
(msg-nick msg)
(msg-uri msg)
(define (str->msg nick uri str)
(if (not (regexp-match? re-msg-begin str))
- (begin
- (log-debug "Non-msg line from nick:~a, line:~a" nick str)
- #f)
- (let ([toks (string-split str (regexp "\t+"))])
- (if (not (= 2 (length toks)))
- (begin
- (log-warning "Invalid msg line from nick:~a, msg:~a" nick str)
- #f)
- (let*
- ([ts_rfc3339 (first toks)]
- [text (second toks)]
- [t (string->rfc3339-record ts_rfc3339)]
- ; TODO handle tz offset
- [ts_epoch (find-seconds [rfc3339-record:second t]
- [rfc3339-record:minute t]
- [rfc3339-record:hour t]
- [rfc3339-record:mday t]
- [rfc3339-record:month t]
- [rfc3339-record:year t])])
- (msg ts_epoch ts_rfc3339 nick uri text))))))
+ (begin
+ (log-debug "Non-msg line from nick:~a, line:~a" nick str)
+ #f)
+ (let ([toks (string-split str (regexp "\t+"))])
+ (if (not (= 2 (length toks)))
+ (begin
+ (log-warning "Invalid msg line from nick:~a, msg:~a" nick str)
+ #f)
+ (let*
+ ([ts_rfc3339 (first toks)]
+ [text (second toks)]
+ [t (string->rfc3339-record ts_rfc3339)]
+ ; TODO handle tz offset
+ [ts_epoch (find-seconds [rfc3339-record:second t]
+ [rfc3339-record:minute t]
+ [rfc3339-record:hour t]
+ [rfc3339-record:mday t]
+ [rfc3339-record:month t]
+ [rfc3339-record:year t])])
+ (msg ts_epoch ts_rfc3339 nick uri text))))))
+
+(module+ test
+ (let* ([ts "2020-11-18T22:22:09-0500"]
+ [tab " "]
+ [text "Lorem ipsum"]
+ [nick "foo"]
+ [uri "bar"]
+ [actual (str->msg nick uri (string-join (list ts text) tab))]
+ [expected (msg 1605756129 ts nick uri text)])
+ (check-equal?
+ (msg-ts_epoch actual)
+ (msg-ts_epoch expected)
+ "str->msg ts_epoch")
+ (check-equal?
+ (msg-ts_rfc3339 actual)
+ (msg-ts_rfc3339 expected)
+ "str->msg ts_rfc3339")
+ (check-equal?
+ (msg-nick actual)
+ (msg-nick expected)
+ "str->msg nick")
+ (check-equal?
+ (msg-uri actual)
+ (msg-uri expected)
+ "str->msg uri")
+ (check-equal?
+ (msg-text actual)
+ (msg-text expected)
+ "str->msg text")))
(define (str->lines str)
(string-split str (regexp "[\r\n]+")))
+(module+ test
+ (check-equal? (str->lines "abc\ndef\n\nghi") '("abc" "def" "ghi")))
+
(define (str->msgs nick uri str)
(filter-map (λ (line) (str->msg nick uri line)) (str->lines str)))
uri status (string-length body))
; TODO Handle redirects
(if (= status 200)
- (let*
- ([url-digest
- (hash-sha1 uri)]
- [cache-file-path
- (expand-user-path (string-append "~/.tt/cache/" url-digest))])
- (display-to-file
- body cache-file-path
- #:exists 'replace)
- body)
- ; TODO A more-informative exception
- (raise status)))
+ (let*
+ ([url-digest
+ (hash-sha1 uri)]
+ [cache-file-path
+ (expand-user-path (string-append "~/.tt/cache/" url-digest))])
+ (display-to-file
+ body cache-file-path
+ #:exists 'replace)
+ body)
+ ; TODO A more-informative exception
+ (raise status)))
(define (timeline-print out-format timeline)
(for ([msg timeline]
[i (in-naturals)])
- (msg-print out-format (odd? i) msg)))
+ (msg-print out-format (odd? i) msg)))
(define (feed->msgs feed)
(log-info "downloading feed nick:~a uri:~a"
"https://raw.githubusercontent.com/mdom/we-are-twtxt/master/we-are-twtxt.txt")
(str->feeds (uri-fetch uri)))
-(define user-agent
+(define (user-agent prog-name prog-version)
(let*
- ([prog-name "tt"]
- [prog-version "0.3.4"]
- [prog-uri "https://github.com/xandkar/tt"]
+ ([prog-uri "https://github.com/xandkar/tt"]
[user-feed-file (expand-user-path "~/twtxt-me.txt")]
[user
(if (file-exists? user-feed-file)
- (let ([user (first (file->feeds user-feed-file))])
- (format "+~a; @~a" (feed-uri user) (feed-nick user)))
- (format "+~a" prog-uri))]
+ (let ([user (first (file->feeds user-feed-file))])
+ (format "+~a; @~a" (feed-uri user) (feed-nick user)))
+ (format "+~a" prog-uri))]
)
(format "~a/~a (~a)" prog-name prog-version user)))
(module+ main
- (define (setup-logging)
- (define logger (make-logger #f #f 'debug #f))
- (define log-chan (make-log-receiver logger 'debug))
- (void (thread (λ ()
- [date-display-format 'iso-8601]
- [let loop ()
- (define data (sync log-chan))
- (define level (vector-ref data 0))
- (define msg (vector-ref data 1))
- (define ts (date->string (current-date) #t))
- (eprintf "~a [~a] ~a~n" ts level msg)
- (loop)])))
- (current-logger logger))
-
- (setup-logging)
- (current-http-response-auto #f)
- (current-http-user-agent user-agent)
- (date-display-format 'rfc2822)
-
- (define args (current-command-line-arguments))
- (define feeds
- (if (vector-empty? args)
- (we-are-twtxt)
- (file->feeds (vector-ref args 0))))
- (define out-format 'multi-line)
- (define num_workers 15) ; 15 was fastest out of the tried 1, 5, 10, 15 and 20.
- (timeline-print out-format (timeline num_workers feeds)))
+ (require setup/getinfo)
+
+ (let* ([logger (make-logger #f #f 'debug #f)]
+ [log-receiver (make-log-receiver logger 'debug)])
+ (void (thread (λ ()
+ [date-display-format 'iso-8601]
+ [let loop ()
+ (define data (sync log-receiver))
+ (define level (vector-ref data 0))
+ (define msg (vector-ref data 1))
+ (define ts (date->string (current-date) #t))
+ (eprintf "~a [~a] ~a~n" ts level msg)
+ (loop)])))
+ (current-logger logger))
+ (current-http-response-auto #f)
+ (let* ([prog-name "tt"]
+ [prog-version ((get-info (list prog-name)) 'version)]
+ [user-agent (user-agent prog-name prog-version)])
+ (current-http-user-agent user-agent))
+ (date-display-format 'rfc2822)
+ (let ([feeds
+ (let ([args (current-command-line-arguments)])
+ (if (= 0 (vector-length args))
+ (we-are-twtxt)
+ (file->feeds (vector-ref args 0))))]
+ [out-format
+ 'multi-line]
+ [num_workers
+ 15]) ; 15 was fastest out of the tried 1, 5, 10, 15 and 20.
+ (timeline-print out-format (timeline num_workers feeds))))
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