Commit | Line | Data |
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cd541405 | 1 | #lang typed/racket/no-check |
4764ff89 | 2 | |
1d753430 | 3 | (require openssl/sha1) |
4764ff89 | 4 | (require racket/date) |
9c464d95 SK |
5 | (require |
6 | net/http-client | |
7 | net/url-string | |
8 | net/url-structs) | |
4764ff89 | 9 | |
3c9c8266 SK |
10 | (require (prefix-in info: "info.rkt")) |
11 | ||
78398948 | 12 | (module+ test |
de3ff448 | 13 | (require rackunit)) |
78398948 | 14 | |
98529d3d SK |
15 | (define-type Url |
16 | net/url-structs:url) | |
17 | ||
18 | (define-type Out-Format | |
19 | (U 'single-line | |
20 | 'multi-line)) | |
21 | ||
22 | (define-type Timeline-Order | |
23 | (U 'old->new | |
24 | 'new->old)) | |
25 | ||
9c464d95 | 26 | (struct msg |
cd541405 SK |
27 | ([ts_epoch : Integer] |
28 | [ts_rfc3339 : String] | |
29 | [nick : String] | |
98529d3d SK |
30 | [uri : Url] |
31 | [text : String]) | |
32 | #:type-name Msg) | |
9c464d95 SK |
33 | |
34 | (struct feed | |
cd541405 | 35 | ([nick : String] |
98529d3d SK |
36 | [uri : Url]) |
37 | #:type-name Feed) | |
4764ff89 | 38 | |
895a32cf | 39 | (define (concurrent-filter-map num_workers f xs) |
dad4504d | 40 | ; TODO preserve order of elements OR communicate that reorder is expected |
a239a233 | 41 | ; TODO switch from mailboxes to channels |
895a32cf SK |
42 | (define (make-worker id f) |
43 | (define parent (current-thread)) | |
44 | (λ () | |
45 | (define self (current-thread)) | |
46 | (define (work) | |
47 | (thread-send parent (cons 'next self)) | |
48 | (match (thread-receive) | |
c562bea3 SK |
49 | ['done (thread-send parent (cons 'exit id))] |
50 | [(cons 'unit x) (begin | |
51 | (define y (f x)) | |
52 | (when y (thread-send parent (cons 'result y))) | |
53 | (work))])) | |
895a32cf SK |
54 | (work))) |
55 | (define (dispatch ws xs ys) | |
56 | (if (empty? ws) | |
f1493e49 SK |
57 | ys |
58 | (match (thread-receive) | |
c562bea3 SK |
59 | [(cons 'exit w) (dispatch (remove w ws =) xs ys)] |
60 | [(cons 'result y) (dispatch ws xs (cons y ys))] | |
61 | [(cons 'next thd) (match xs | |
62 | ['() (begin | |
63 | (thread-send thd 'done) | |
64 | (dispatch ws xs ys))] | |
65 | [(cons x xs) (begin | |
66 | (thread-send thd (cons 'unit x)) | |
67 | (dispatch ws xs ys))])]))) | |
9926c9a9 SK |
68 | (define workers (range num_workers)) |
69 | (define threads (map (λ (id) (thread (make-worker id f))) workers)) | |
70 | (define results (dispatch workers xs '())) | |
895a32cf SK |
71 | (for-each thread-wait threads) |
72 | results) | |
73 | ||
dad4504d | 74 | (module+ test |
de3ff448 SK |
75 | (let* ([f (λ (x) (if (even? x) x #f))] |
76 | [xs (range 11)] | |
77 | [actual (sort (concurrent-filter-map 10 f xs) <)] | |
78 | [expected (sort ( filter-map f xs) <)]) | |
c562bea3 | 79 | (check-equal? actual expected "concurrent-filter-map"))) |
dad4504d | 80 | |
98529d3d | 81 | (: msg-print (-> Out-Format Integer Msg Void)) |
3d042e75 SK |
82 | (define msg-print |
83 | (let* ([colors (vector 36 33)] | |
84 | [n (vector-length colors)]) | |
85 | (λ (out-format color-i msg) | |
01e4c499 SK |
86 | (let ([color (vector-ref colors (modulo color-i n))] |
87 | [nick (msg-nick msg)] | |
9c464d95 | 88 | [uri (url->string (msg-uri msg))] |
01e4c499 | 89 | [text (msg-text msg)]) |
3d042e75 | 90 | (match out-format |
01e4c499 SK |
91 | ['single-line |
92 | (printf "~a \033[1;37m<~a>\033[0m \033[0;~am~a\033[0m~n" | |
93 | (parameterize ([date-display-format 'iso-8601]) | |
9f94cca9 | 94 | (date->string (seconds->date [msg-ts_epoch msg]) #t)) |
01e4c499 SK |
95 | nick color text)] |
96 | ['multi-line | |
97 | (printf "~a~n\033[1;37m<~a ~a>\033[0m~n\033[0;~am~a\033[0m~n~n" | |
98 | (parameterize ([date-display-format 'rfc2822]) | |
9f94cca9 | 99 | (date->string (seconds->date [msg-ts_epoch msg]) #t)) |
01e4c499 | 100 | nick uri color text)]))))) |
e96264cc | 101 | |
98529d3d | 102 | (: str->msg (-> String Url String (Option Msg))) |
b4689464 | 103 | (define str->msg |
f9d1c7fe SK |
104 | ; TODO Split parsing into 2 stages: 1) line->list; 2) rfc3339->epoch. |
105 | (let ([re (pregexp "^(([0-9]{4})-([0-9]{2})-([0-9]{2})T([0-9]{2}):([0-9]{2})(:([0-9]{2}))?)(\\.[0-9]+)?([^\\s\t]*)[\\s\t]+(.*)$")]) | |
b4689464 SK |
106 | (λ (nick uri str) |
107 | (with-handlers* | |
108 | ([exn:fail? | |
109 | (λ (e) | |
9c464d95 SK |
110 | (log-error |
111 | "Failed to parse msg: ~v, from: ~v, at: ~v, because: ~v" | |
112 | str nick (url->string uri) e) | |
b4689464 SK |
113 | #f)]) |
114 | (match (regexp-match re str) | |
f9d1c7fe | 115 | [(list _wholething ts yyyy mm dd HH MM _:SS SS _f tz text) |
c562bea3 | 116 | (let* |
c562bea3 | 117 | ; TODO handle tz offset |
f9d1c7fe SK |
118 | ([ts_rfc3339 (string-append ts (if SS "" ":00") (if tz tz ""))] |
119 | [ts_epoch (find-seconds (if SS (string->number SS) 0) | |
120 | (string->number MM) | |
121 | (string->number HH) | |
122 | (string->number dd) | |
123 | (string->number mm) | |
124 | (string->number yyyy))]) | |
b4689464 SK |
125 | (msg ts_epoch ts_rfc3339 nick uri text))] |
126 | [_ | |
127 | (log-debug "Non-msg line from nick:~a, line:~a" nick str) | |
128 | #f]))))) | |
88d50b3e | 129 | |
63afa259 | 130 | (module+ test |
b4689464 SK |
131 | (let* ([tzs (for*/list ([d '("-" "+")] |
132 | [h '("5" "05")] | |
133 | [m '("00" ":00" "57" ":57")]) | |
134 | (string-append d h m))] | |
135 | [tzs (list* "" "Z" tzs)]) | |
136 | (for* ([n '("fake-nick")] | |
137 | [u '("fake-uri")] | |
138 | [s '("" ":10")] | |
139 | [f '("" ".1337")] | |
140 | [z tzs] | |
141 | [sep (list "\t" " ")] | |
142 | [txt '("foo bar baz" "'jaz poop bear giraffe / tea" "@*\"``")]) | |
143 | (let* ([ts (string-append "2020-11-18T22:22" | |
144 | (if (non-empty-string? s) s ":00") | |
145 | z)] | |
146 | [m (str->msg n u (string-append ts sep txt))]) | |
147 | (check-not-false m) | |
148 | (check-equal? (msg-nick m) n) | |
149 | (check-equal? (msg-uri m) u) | |
150 | (check-equal? (msg-text m) txt) | |
151 | (check-equal? (msg-ts_rfc3339 m) ts (format "Given: ~v" ts)) | |
152 | ))) | |
153 | ||
de3ff448 SK |
154 | (let* ([ts "2020-11-18T22:22:09-0500"] |
155 | [tab " "] | |
156 | [text "Lorem ipsum"] | |
157 | [nick "foo"] | |
158 | [uri "bar"] | |
159 | [actual (str->msg nick uri (string-append ts tab text))] | |
160 | [expected (msg 1605756129 ts nick uri text)]) | |
c562bea3 SK |
161 | ; FIXME re-enable after handling tz offset |
162 | ;(check-equal? | |
163 | ; (msg-ts_epoch actual) | |
164 | ; (msg-ts_epoch expected) | |
165 | ; "str->msg ts_epoch") | |
166 | (check-equal? | |
167 | (msg-ts_rfc3339 actual) | |
168 | (msg-ts_rfc3339 expected) | |
169 | "str->msg ts_rfc3339") | |
170 | (check-equal? | |
171 | (msg-nick actual) | |
172 | (msg-nick expected) | |
173 | "str->msg nick") | |
174 | (check-equal? | |
175 | (msg-uri actual) | |
176 | (msg-uri expected) | |
177 | "str->msg uri") | |
178 | (check-equal? | |
179 | (msg-text actual) | |
180 | (msg-text expected) | |
181 | "str->msg text"))) | |
63afa259 | 182 | |
98529d3d | 183 | (: str->lines (-> String (Listof String))) |
e96264cc SK |
184 | (define (str->lines str) |
185 | (string-split str (regexp "[\r\n]+"))) | |
186 | ||
63afa259 | 187 | (module+ test |
de3ff448 | 188 | (check-equal? (str->lines "abc\ndef\n\nghi") '("abc" "def" "ghi"))) |
63afa259 | 189 | |
98529d3d | 190 | (: str->msgs (-> String Url String (Listof Msg))) |
b201e854 SK |
191 | (define (str->msgs nick uri str) |
192 | (filter-map (λ (line) (str->msg nick uri line)) (str->lines str))) | |
4764ff89 | 193 | |
98529d3d | 194 | (: hash-sha1 (-> String String)) |
1d753430 SK |
195 | (define (hash-sha1 str) |
196 | (define in (open-input-string str)) | |
197 | (define digest (sha1 in)) | |
198 | (close-input-port in) | |
199 | digest) | |
200 | ||
98529d3d | 201 | (: url->cache-file-path (-> Url Path-String)) |
9c464d95 SK |
202 | (define (url->cache-file-path uri) |
203 | ; TODO Replace hashing with encoding | |
204 | (expand-user-path (string-append "~/.tt/cache/" (hash-sha1 (url->string uri))))) | |
205 | ||
98529d3d SK |
206 | ; TODO Return Option |
207 | (: uri-read-cached (-> Url String)) | |
4214c0f3 | 208 | (define (uri-read-cached uri) |
9c464d95 SK |
209 | (define path (url->cache-file-path uri)) |
210 | (if (file-exists? path) | |
211 | (file->string path) | |
0e16a46c | 212 | (begin |
9c464d95 | 213 | (log-warning "Cache file not found for URI: ~a" (url->string uri)) |
4214c0f3 SK |
214 | ""))) |
215 | ||
98529d3d | 216 | (: str->feed (String (Option Feed))) |
9c464d95 SK |
217 | (define (str->feed str) |
218 | (log-debug "Parsing feed string: ~v" str) | |
219 | (match (string-split str) | |
220 | [(list nick u) | |
221 | (with-handlers* | |
222 | ([exn:fail? | |
223 | (λ (e) | |
224 | (log-error "Invalid URI: ~v, exn: ~v" u e) | |
225 | #f)]) | |
226 | (feed nick (string->url u)))] | |
227 | [_ | |
228 | (log-error "Invalid feed string: ~v" str) | |
229 | #f])) | |
230 | ||
98529d3d | 231 | (: filter-comments (-> (Listof String) (Listof String))) |
9c464d95 SK |
232 | (define (filter-comments lines) |
233 | (filter-not (λ (line) (string-prefix? line "#")) lines)) | |
234 | ||
98529d3d | 235 | (: str->feeds (-> String (Listof Feed))) |
9c464d95 SK |
236 | (define (str->feeds str) |
237 | (filter-map str->feed (filter-comments (str->lines str)))) | |
238 | ||
98529d3d | 239 | (: file->feeds (-> Path-String (Listof Feed))) |
9c464d95 SK |
240 | (define (file->feeds filename) |
241 | (str->feeds (file->string filename))) | |
242 | ||
98529d3d | 243 | (: user-agent String) |
9c464d95 SK |
244 | (define user-agent |
245 | (let* | |
246 | ([prog-name "tt"] | |
3c9c8266 | 247 | [prog-version (info:#%info-lookup 'version)] |
9c464d95 SK |
248 | [prog-uri "https://github.com/xandkar/tt"] |
249 | [user-feed-file (expand-user-path "~/twtxt-me.txt")] | |
250 | [user | |
251 | (if (file-exists? user-feed-file) | |
252 | (let ([user (first (file->feeds user-feed-file))]) | |
253 | (format "+~a; @~a" (url->string (feed-uri user)) (feed-nick user))) | |
254 | (format "+~a" prog-uri))]) | |
255 | (format "~a/~a (~a)" prog-name prog-version user))) | |
256 | ||
98529d3d | 257 | (: uri-download (-> Url Void)) |
9c464d95 SK |
258 | (define (uri-download u) |
259 | (define cache-file-path (url->cache-file-path u)) | |
260 | (log-debug "uri-download ~v into ~v" u cache-file-path) | |
261 | (match* ((url-scheme u) (url-host u) (url-port u)) | |
262 | [(s h p) | |
263 | #:when (and s h) | |
264 | (define ssl? (string=? s "https")) | |
265 | (define-values (status-line headers body-input) | |
266 | ; TODO Timeout. Currently hangs on slow connections. | |
267 | (http-sendrecv | |
268 | h | |
269 | (url->string (struct-copy url u [scheme #f] [host #f])) | |
270 | #:ssl? ssl? | |
271 | #:port (cond [p p] [ssl? 443] [else 80]) | |
272 | #:headers (list (format "User-Agent: ~a" user-agent)) | |
273 | )) | |
274 | (log-debug "headers: ~v" headers) | |
275 | (log-debug "status-line: ~v" status-line) | |
276 | (define status | |
277 | (string->number (second (string-split (bytes->string/utf-8 status-line))))) | |
278 | (log-debug "status: ~v" status) | |
279 | ; TODO Handle redirects | |
280 | (if (= 200 status) | |
281 | (call-with-output-file cache-file-path | |
282 | (λ (cache-output) | |
283 | (copy-port body-input cache-output)) | |
284 | #:exists 'replace) | |
285 | (raise status))] | |
286 | [(_ _ _) | |
287 | (log-error "Invalid URI: ~v" u)])) | |
4764ff89 | 288 | |
98529d3d | 289 | (: timeline-print (-> Out-Format (Listof Msg) Void)) |
b201e854 | 290 | (define (timeline-print out-format timeline) |
3d042e75 SK |
291 | (void (foldl (match-lambda** |
292 | [((and m (msg _ _ nick _ _)) (cons prev-nick i)) | |
293 | (let ([i (if (string=? prev-nick nick) i (+ 1 i))]) | |
294 | (msg-print out-format i m) | |
295 | (cons nick i))]) | |
296 | (cons "" 0) | |
297 | timeline))) | |
4764ff89 | 298 | |
98529d3d | 299 | (: feed->msgs (-> Feed (Listof Msg))) |
9c464d95 SK |
300 | (define (feed->msgs f) |
301 | (match-define (feed nick uri) f) | |
302 | (log-info "Reading feed nick:~a uri:~v" nick uri) | |
303 | (str->msgs nick uri (uri-read-cached uri))) | |
4214c0f3 | 304 | |
98529d3d | 305 | (: feed-download (-> Feed Void)) |
9c464d95 SK |
306 | (define (feed-download f) |
307 | (match-define (feed nick uri) f) | |
308 | (log-info "Downloading feed nick:~a uri:~a" nick (url->string uri)) | |
9a6a9f9a | 309 | (with-handlers |
9c464d95 | 310 | ([exn:fail? |
9a6a9f9a | 311 | (λ (e) |
9c464d95 | 312 | (log-error "Network error nick:~a uri:~v exn:~v" nick uri e) |
9a6a9f9a SK |
313 | #f)] |
314 | [integer? | |
315 | (λ (status) | |
9c464d95 | 316 | (log-error "HTTP error nick:~a uri:~a status:~a" nick uri status) |
9a6a9f9a | 317 | #f)]) |
9c464d95 | 318 | (uri-download uri))) |
4214c0f3 | 319 | |
98529d3d | 320 | (: timeline-download (-> Integer (Listof Feed) Void)) |
4214c0f3 SK |
321 | (define (timeline-download num_workers feeds) |
322 | ; TODO No need for map - can just iter | |
323 | (void (concurrent-filter-map num_workers feed-download feeds))) | |
9a6a9f9a SK |
324 | |
325 | ; TODO timeline contract : time-sorted list of messages | |
98529d3d | 326 | (: timeline-read (-> Timeline-Order (Listof Feed) (Listof Msg))) |
a4899240 SK |
327 | (define (timeline-read order feeds) |
328 | (define cmp (match order | |
329 | ['old->new <] | |
330 | ['new->old >])) | |
4214c0f3 | 331 | (sort (append* (filter-map feed->msgs feeds)) |
a4899240 | 332 | (λ (a b) (cmp (msg-ts_epoch a) (msg-ts_epoch b))))) |
4764ff89 | 333 | |
98529d3d | 334 | (: start-logger (-> Log-Level Void)) |
01e4c499 SK |
335 | (define (start-logger level) |
336 | (let* ([logger (make-logger #f #f level #f)] | |
337 | [log-receiver (make-log-receiver logger level)]) | |
338 | (void (thread (λ () | |
339 | (parameterize | |
340 | ([date-display-format 'iso-8601]) | |
341 | (let loop () | |
342 | (define data (sync log-receiver)) | |
343 | (define level (vector-ref data 0)) | |
344 | (define msg (vector-ref data 1)) | |
345 | (define ts (date->string (current-date) #t)) | |
346 | (eprintf "~a [~a] ~a~n" ts level msg) | |
347 | (loop)))))) | |
348 | (current-logger logger))) | |
349 | ||
24c6a76b | 350 | (module+ main |
24f1f64b | 351 | (let ([log-level 'info]) |
c562bea3 | 352 | (command-line |
24f1f64b SK |
353 | #:program |
354 | "tt" | |
c562bea3 | 355 | #:once-each |
01e4c499 SK |
356 | [("-d" "--debug") |
357 | "Enable debug log level." | |
358 | (set! log-level 'debug)] | |
24f1f64b SK |
359 | #:help-labels |
360 | "" | |
361 | "and <command> is one of" | |
4214c0f3 SK |
362 | "r, read i : Read the timeline." |
363 | "d, download : Download the timeline." | |
3a4b2233 | 364 | "u, upload : Upload your twtxt file (alias to execute ~/.tt/upload)." |
24f1f64b SK |
365 | "" |
366 | #:args (command . args) | |
4214c0f3 SK |
367 | (start-logger log-level) |
368 | (current-command-line-arguments (list->vector args)) | |
24f1f64b | 369 | (match command |
4214c0f3 SK |
370 | [(or "d" "download") |
371 | (let ([num_workers 15]) ; 15 was fastest out of the tried: 1, 5, 10, 20. | |
24f1f64b SK |
372 | (command-line |
373 | #:program | |
4214c0f3 | 374 | "tt download" |
24f1f64b SK |
375 | #:once-each |
376 | [("-j" "--jobs") | |
377 | njobs "Number of concurrent jobs." | |
378 | (set! num_workers (string->number njobs))] | |
4214c0f3 | 379 | #:args (filename) |
9c464d95 | 380 | (timeline-download num_workers (file->feeds filename))))] |
3a4b2233 SK |
381 | [(or "u" "upload") |
382 | (command-line | |
383 | #:program | |
384 | "tt upload" | |
385 | #:args () | |
386 | (if (system (path->string (expand-user-path "~/.tt/upload"))) | |
387 | (exit 0) | |
388 | (exit 1)))] | |
4214c0f3 | 389 | [(or "r" "read") |
a4899240 SK |
390 | (let ([out-format 'multi-line] |
391 | [order 'old->new]) | |
4214c0f3 SK |
392 | (command-line |
393 | #:program | |
394 | "tt read" | |
a4899240 SK |
395 | #:once-each |
396 | [("-r" "--rev") | |
397 | "Reverse displayed timeline order." | |
398 | (set! order 'new->old)] | |
24f1f64b SK |
399 | #:once-any |
400 | [("-s" "--short") | |
401 | "Short output format" | |
402 | (set! out-format 'single-line)] | |
403 | [("-l" "--long") | |
404 | "Long output format" | |
405 | (set! out-format 'multi-line)] | |
406 | #:args (filename) | |
a4899240 | 407 | (timeline-print out-format (timeline-read order (file->feeds filename)))))] |
24f1f64b | 408 | )))) |