1 ! Copyright (C) 2008 Slava Pestov.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: assocs calendar calendar.format combinators
4 concurrency.messaging continuations debugger destructors init io
5 io.directories io.encodings.utf8 io.files io.pathnames kernel
6 locals math math.parser math.ranges namespaces sequences
10 : log-root ( -- string )
11 \ log-root get-global [ "logs" resource-path ] unless* ;
13 : log-path ( service -- path )
14 log-root prepend-path ;
16 : log# ( path n -- path' )
17 number>string ".log" append append-path ;
21 : open-log-stream ( service -- stream )
24 [ 1 log# utf8 <file-appender> ] bi ;
26 : log-stream ( service -- stream )
27 log-files get [ open-log-stream ] cache ;
29 : close-log-streams ( -- )
30 log-files get [ values dispose-each ] [ clear-assoc ] bi ;
32 :: with-log-root ( path quot -- )
33 [ close-log-streams path \ log-root set-global quot call ]
35 [ \ log-root set-global close-log-streams ] curry
38 : timestamp-header. ( -- )
39 "[" write now write-rfc3339 "] " write ;
41 : multiline-header ( -- str ) 20 CHAR: - <string> ; foldable
43 : multiline-header. ( -- )
44 "[" write multiline-header write "] " write ;
46 :: write-message ( msg word-name level -- )
50 [ level write bl word-name write ": " write print ]
54 : (log-message) ( msg -- )
55 ! msg: { msg word-name level service }
56 first4 log-stream [ write-message flush ] with-output-stream* ;
58 : try-dispose ( obj -- )
59 [ dispose ] curry [ error. ] recover ;
61 : close-log ( service -- )
62 log-files get delete-at*
63 [ try-dispose ] [ drop ] if ;
67 [ values [ try-dispose ] each ] [ clear-assoc ] bi ;
69 CONSTANT: keep-logs 10
71 : delete-oldest ( service -- )
72 keep-logs log# ?delete-file ;
74 : ?move-file ( old new -- )
75 over file-exists? [ move-file ] [ 2drop ] if ;
77 : advance-log ( path n -- )
78 [ 1 - log# ] 2keep log# ?move-file ;
80 : rotate-log ( service -- )
85 [ keep-logs 1 [a..b] [ advance-log ] with each ] bi
88 : (rotate-logs) ( -- )
90 log-root directory-files [ rotate-log ] each ;
92 : log-server-loop ( -- )
94 { "log-message" [ (log-message) ] }
95 { "rotate-logs" [ drop (rotate-logs) ] }
96 { "close-logs" [ drop (close-logs) ] }
97 } case log-server-loop ;
103 [ error. (close-logs) ]
106 "Log server" spawn-server
107 "log-server" set-global ;
110 H{ } clone log-files set-global
112 ] "logging" add-startup-hook