ÿØÿà JFIF    ÿÛ „  ( %"1!%)+...383,7(-.+  -+++--++++---+-+-----+---------------+---+-++7-----ÿÀ  ß â" ÿÄ     ÿÄ H    !1AQaq"‘¡2B±ÁÑð#R“Ò Tbr‚²á3csƒ’ÂñDS¢³$CÿÄ   ÿÄ %  !1AQa"23‘ÿÚ   ? ôÿ ¨pŸªáÿ —åYõõ\?àÒü©ŠÄï¨pŸªáÿ —åYõõ\?àÓü©ŠÄá 0Ÿªáÿ Ÿå[úƒ ú®ði~TÁbqÐ8OÕpÿ ƒOò¤Oè`–RÂáœá™êi€ßÉ< FtŸI“öÌ8úDf´°å}“¾œ6  öFá°y¥jñÇh†ˆ¢ã/ÃÐ:ªcÈ "Y¡ðÑl>ÿ ”ÏËte:qž\oäŠe÷󲍷˜HT4&ÿ ÓÐü6ö®¿øþßèô Ÿ•7Ñi’•j|“ñì>b…þS?*Óôÿ ÓÐü*h¥£ír¶ü UãSç‚Ÿ[AÐaè[ûª•õ&õj?†Éö+EzP—WeÒírJFt ‘BŒ†Ï‡%#tE Øz ¥OÛ«!1›üä±Í™%ºÍãö]°î(–:@<‹ŒÊö×òÆt¦ãº+‡¦%ÌÁ²h´OƒJŒtMÜ>ÀÜÊw3Y´•牋4ǍýʏTì>œú=Íwhyë,¾Ôò×õ¿ßÊa»«þˆѪQ|%6ž™A õ%:øj<>É—ÿ Å_ˆCbõ¥š±ý¯Ýƒï…¶|RëócÍf溪“t.СøTÿ *Ä¿-{†çàczůŽ_–^XþŒ±miB[X±d 1,é”zEù»& î9gœf™9Ð'.;—™i}!ôšåîqêÛ٤ёý£½ÆA–àôe"A$˝Úsäÿ ÷Û #°xŸëí(l »ý3—¥5m! rt`†0~'j2(]S¦¦kv,ÚÇ l¦øJA£Šƒ J3E8ÙiŽ:cÉžúeZ°€¯\®kÖ(79«Ž:¯X”¾³Š&¡* ….‰Ž(ÜíŸ2¥ª‡×Hi²TF¤ò[¨íÈRëÉ䢍mgÑ.Ÿ<öäS0í„ǹÁU´f#Vß;Õ–…P@3ío<ä-±»Ž.L|kªÀê›fÂ6@»eu‚|ÓaÞÆŸ…¨ááå>åŠ?cKü6ùTÍÆ”†sĤÚ;H2RÚ†õ\Ö·Ÿn'¾ ñ#ºI¤Å´%çÁ­‚â7›‹qT3Iï¨ÖÚ5I7Ë!ÅOóŸ¶øÝñØôת¦$Tcö‘[«Ö³šÒ';Aþ ¸èíg A2Z"i¸vdÄ÷.iõ®§)¿]¤À†–‡É&ä{V¶iŽ”.Ó×Õÿ û?h¬Mt–íª[ÿ Ñÿ ÌV(í}=ibÔ¡›¥¢±b Lô¥‡piη_Z<‡z§èŒ)iÖwiÇ 2hÙ3·=’d÷8éŽ1¦¸c¤µ€7›7Ø ð\á)} ¹fËí›pAÃL%âc2 í§æQz¿;T8sæ°qø)QFMð‰XŒÂ±N¢aF¨…8¯!U  Z©RÊ ÖPVÄÀÍin™Ì-GˆªÅËŠ›•zË}º±ŽÍFò¹}Uw×#ä5B¤{î}Ð<ÙD é©¤&‡ïDbàÁôMÁ." ¤‡ú*õ'VŽ|¼´Úgllº¼klz[Æüï÷Aób‡Eÿ dÑ»Xx9ÃÜ£ÁT/`¼¸vI±Ýµ·Ë‚“G³þ*Ÿû´r|*}<¨îºœ @¦mÄ’M¹”.œ«Y–|6ÏU¤jç¥ÕÞqO ˜kDÆÁ¨5ÿ š;Њ¦¦€GÙk \ –Þ=â¼=SͧµªS°ÚÍpÜãQűÀõ¬?ÃÁ1Ñ•õZà?hóœ€ L¦l{Y*K˜Ù›zc˜–ˆâ ø+¾ ­-Ök¥%ùEÜA'}ˆ><ÊIè“bpÍ/qÞâvoX€w,\úªò6Z[XdÒæ­@Ö—€$òJí#é>'°Ú ôª˜<)4ryÙ£|óAÅn5žêŸyÒäMÝ2{"}‰–¤l÷ûWX\l¾Á¸góÉOÔ /óñB¤f¸çñ[.P˜ZsÊË*ßT܈§QN¢’¡¨§V¼(Üù*eÕ“”5T¨‹Âê¥FŒã½Dü[8'Ò¥a…Ú¶k7a *•›¼'Ò·\8¨ª\@\õ¢¦íq+DÙrmÎ…_ªæ»ŠÓœ¡¯’Ré9MÅ×D™lælffc+ŒÑ,ý™ÿ ¯þǤ=Å’Á7µ÷ÚÛ/“Ü€ñýã¼àí¾ÕÑ+ƒ,uµMâÀÄbm:ÒÎPæ{˜Gz[ƒ¯«® KHà`ßØŠéí¯P8Aq.C‰ à€kòpj´kN¶qô€…Õ,ÜNŠª-­{Zö’æû44‰sŽè‰îVíRœÕm" 6?³D9¡ÇTíÅꋇ`4«¸ÝÁô ï’ýorqКÇZ«x4Žâéþuïf¹µö[P ,Q£éaX±`PÉÍZ ¸äYúg üAx ’6Lê‚xÝÓ*äQ  Ï’¨hÍ =²,6ï#rÃ<¯–£»ƒ‹,–ê•€ aÛsñ'%Æ"®ÛüìBᝠHÚ3ß°©$“XnœÖ’î2ËTeûìxîß ¦å¿çÉ ðK§þ{‘t‚Ϋ¬jéîZ[ ”š7L¥4VÚCE×]m¤Øy”ä4-dz£œ§¸x.*ãÊÊ b÷•h:©‡¦s`BTÁRû¾g⻩‹jø sF¢àJøFl‘È•Xᓁà~*j¯ +(ÚÕ6-£¯÷GŠØy‚<Ç’.F‹Hœw(+)ÜÜâÈzÄäT§FߘãÏ;DmVœ3Àu@mÚüXÝü•3B¨òÌÁÛ<·ÃÜ z,Ì@õÅ·d2]ü8s÷IôÞ¯^Ç9¢u„~ëAŸï4«M? K]­ÅàPl@s_ p:°¬ZR”´›JC[CS.h‹ƒïËœ«Æ]–÷ó‚wR×k7X‰k›‘´ù¦=¡«‰¨¨Â')—71ó’c‡Ðúµ `é.{§p¹ój\Ž{1h{o±Ý=áUÊïGÖŒõ–-BÄm+AZX¶¡ ïHðæ¥JmÙ;…ä¡Ÿˆ¦ ° äšiÉg«$üMk5¤L“’çÊvïâï ,=f“"íἊ5ô¬x6{ɏžID0e¸vçmi'︧ºð9$ò¹÷*£’9ÿ ²TÔ…×>JV¥}Œ}$p[bÔ®*[jzS*8 ”·T›Í–ñUîƒwo$áè=LT™ç—~ô·¤ÈÚ$榍q‰„+´kFm)ž‹©i–ËqÞŠ‰à¶ü( ‚•§ •°ò·‡#5ª•µÊ﯅¡X¨šÁ*F#TXJÊ ušJVÍ&=iÄs1‚3•'fý§5Ñ<=[íÞ­ PÚ;ѱÌ_~Ä££8rÞ ²w;’hDT°>ÈG¬8Á²ÚzŽ®ò®qZcqJêäÞ-ö[ܘbň±çb“Š¶31²n×iƒðÕ;1¶þÉ ªX‰,ßqÏ$>•î íZ¥Z 1{ç൵+ƒÕµ¥°T$§K]á»Ûï*·¤tMI’ÂZbŽÕiÒ˜}bÓ0£ª5›¨ [5Ž^ÝœWøÂÝh° ¢OWun£¤5 a2Z.G2³YL]jåtì”ä ÁÓ‘%"©<ÔúÊ°sº UZvä‡ÄiÆÒM .÷V·™ø#kèýiíÌ–ª)µT[)BˆõÑ xB¾B€ÖT¨.¥~ð@VĶr#¸ü*åZNDŽH;âi ],©£öØpù(šºãö¼T.uCê•4@ÿ GÕÛ)Cx›®0ø#:ÏðFÒbR\(€€Ä®fã4Þ‰Fä¯HXƒÅ,†öEÑÔÜ]Öv²?tLÃvBY£ú6Êu5ÅAQ³1‘’¬x–HŒÐ‡ ^ ¸KwJôÖŽ5×CÚ¨vÜ«/B0$×k°=ðbÇ(Ï)w±A†Á† 11Í=èQšµ626ŒÜ/`G«µ<}—-Ö7KEHÈÉðóȤmݱû±·ø«Snmá=“ä«šmݱŸ¡¶~ó·“äUóJæúòB|E LêŽy´jDÔ$G¢þÐñ7óR8ýÒ…Ç› WVe#·Ÿ p·Fx~•ݤF÷0Èÿ K¯æS<6’¡WШ; ´ÿ ¥Êø\Òuî†åÝ–VNœkÒ7oòX¨Á­Ø÷FÎÑä±g÷ÿ M~Çî=p,X´ ÝÌÚÅ‹’ÃjÖ.ØöÏñ qïQ¤ÓZE†° =6·]܈ s¸>v•Ž^Ý\wq9r‰Î\¸¡kURÒ$­*‹Nq?Þª*!sŠÆ:TU_u±T+øX¡ ®¹¡,ÄâÃBTsÜ$Ø›4m椴zÜK]’’›Pƒ @€#â˜`é¹=I‡fiV•Ôî“nRm+µFPOhÍ0B£ €+¬5c v•:P'ÒyÎ ‰V~‚Ó†ÖuókDoh$å\*ö%Ю=£«…aȼ½÷Û.-½VŒŠ¼'lyî±1¬3ó#ÞE¿ÔS¤gV£m›=§\û"—WU¤ÚǼÿ ÂnÁGŒÃ ‚õN D³õNÚíŒÕ;HôyÄÈ©P¹Ä{:?R‘Ô¨âF÷ø£bÅó® JS|‚R÷ivýáâ€Æé¡è³´IئÑT!§˜•Øª‚¬â@q€wnïCWÄ@JU€ê¯m6]Ï:£âx'+ÒðXvÓ¦Úm=–´7œ $ì“B£~p%ÕŸUþ« N@¼üï~w˜ñø5®—'Ôe»¤5ã//€ž~‰Tþ›Å7•#¤× Íö pÄ$ùeåì*«ÓŠEØWEÈsßg ¦ûvžSsLpºÊW–âµEWöˬH; ™!CYõZ ÃÄf æ#1W. \uWâ\,\Çf j’<qTbên›Î[vxx£ë 'ö¨1›˜ÀM¼Pÿ H)ƒêêŒA7s,|F“ 꺸k³9Ìö*ç®;Ö!Ö$Eiž•¹ÒÚ†ýóéÝû¾ÕS®ó$’NÝäŸz¤5r¦ãÄÃD÷Üø!°ø‡Ô&@m™Ì^Ãä­d q5Lnÿ N;.6½·N|#ä"1Nƒx“ã<3('&ñßt  ~ªu”1Tb㫨9ê–›–bìd$ߣ=#ÕãÒmU¯eí$EFù5ýYô櫨æ왍Ǘ±ssM]·á¿0ÕåJRÓªîiƒ+O58ÖñªŠÒx" \µâá¨i’¤i —Ö ” M+M¤ë9‚‰A¦°Qõ¾ßøK~¼Ã‘g…Ö´~÷Ï[3GUœÒ½#…kàÔ®Ò”‰³·dWV‰IP‰Ú8u¹”E ÖqLj¾êÕCBš{A^Âß;–¨`¯¬ìö ˼ ×tìø.tƐm*n¨y4o&Àx¥n¦×î‡aupáÛj8¿m›è¶ã!o½;ß0y^ý×^EÑ¿ÒjzŒ­)vÚÑnÄL …^ªô× ‡—‚3k Îý­hï]içå–îÏ*÷ñþ»Ô CÒjøjÍznˆ´ ¹#b'Fô‹ ‰v¥'’à'T´ƒHýÍ%M‰ ƒ&ÆÇŒï1 ‘ –Þ ‰i¬s žR-Ÿ kŠ¬á¬7:þ 0ŒÅÒÕ/aÙ¬ÃÝ#Úøœ ©aiVc‰. ¹¦ãµ” ›Yg¦›ÆÎýº°f³7ƒhá·¸­}&D9¡ÂsÉÙÞèŠõØàC™¨ñbFC|´Ü(ŸƒÚÒ-%»'a Ì¿)ËÇn¿úÿ ÞŽX…4ÊÅH^ôΑí@ù¹Eh¶“L8Çjù ¼ÎåVªóR©Ï5uà V4lZß®=€xÖŸ–ÑÈ ÷”¨°¾__yM1tÉ?uÆþIkÄgæ@þ[¢†°XÃJ£j·:nkÅ¢u ‘}âGzö­/IµèŠ¬¼48q¦F°ŽR¼=ûì{´¯RýicS ÕÛ íNtÍÙï£,w4rêì®»~x(©Uñ§#Ñ&œÕ¤>ÎåÍÓ9’Ö{9eV­[Öjâ²ãu]˜å2›qÑšÕJç0€sÄ|Êëè0튔bÁ>“{×_F`Ø©ºê:µä,v¤ðfc1±"«ÔÍän1#=· Âøv~H½ÐßA¾¿Ü€Óš]Õ; I¾÷ç‚Qi†î¹9ywÔKG˜áñ zQY—§ÃÕZ07§X‚ Áh;ÁM)iÌCH-¯T‘ë|A0{Ò½LÚ–TâÖkÜ’dÀ“rmm»”جPF³ÖcbE§T€ÒxKºû’Ó®7±²(\4ŽÃ¸Uu@j™yĵ;³µ!Á¢b.W¤=mõ´êµK k ¸K^ÜÛ#p*Ü14qkZç5ïë †°5Ï%ÍÛ<Õ¤×Ô¥ê†C Õ´¼ú$ƒÖ“”]Ù¬qÞÚ[4©ý!ûÏ—Áb쳐XµA¬â~`›Çr¸8ìùÝ䫦<>ä÷«?xs´ÇÑ /á;¹øüÊÈÙà{"@Žïzâ¬[âß‚ U_<ÇŸ½4èN˜ú61®qŠu ¦þF£»äJ_ˆÙÎ~ ÞAã–Ý„Ï—rŠD;xTž‘ô`É«…suãO`?³à™ô Lý#Íc5öoæØ‚y´´÷«ZR§<&JÇ+éâô´€i!Àˆ0æAoàðLèÖ-2ŸõW.’t^–(KÁmHµV@xÜÇy®Ñø­â^:Ú3w· 7½¹°ñ¸â¹®:',«Mœ—n­Á+Ãbš LÈ‘ÄnRÓÅœ%¦²‰¨ùQ:¤f‚ "PÕtô¸…cæl…&˜Ú˜Ôkv‹ž+vŠ,=¢v­6—Xy*¥t£«<™:“aîϲ=¦6rO]XI¿Œ÷¤zÚ­›¶ 6÷”w\d ü~v®ˆÌk«^m<ÿ ¢‰Õ\)ùºŽ;… lîÙÅEŠ®cѾ@vnMÏ,¼“ñ•ŽBxðÃzãÇç%3ˆ"}Ù•Åî> BÉú;Ò]V+P˜F_´ßé> Øše|ï‡ÄOmFæÇ ãqÞ$/xÐx­z`ï9"œÜij‚!7.\Td…9M‡•iŽ‹¾‘50ÞŽn¥ß4ÉôO ¹*í^QêËÜÇÌ8=Ž§s‰'ÂëÙ«á%Pú[O †ÅP¯VsŽ°.‰,kc¶ ¬A9n˜XÎ-ÞšN["¹QÕ‰ƒMýÁߺXJæÍaLj¾×Ãmã¾ãÚ uñÒþåQô¦¥ /ÄUx:‚ÍÜ’ Đ©ØÝ3V¨‰ÕnÐ6ó*óúK­«…c ¯U òhsý­jóÔj#,ímŒRµ«lbïUTŒÑ8†Ä0œÏr`ð¡¬É Ї ë"À² ™ 6¥ f¶ ¢ÚoܱԷ-<Àî)†a¶ž'Ú»¨TXqØæ¶÷YÄHy˜9ÈIW­YÀuMFë ºÏ’AqÌ4·/Ú †ô'i$øä­=Ä Ý|öK×40è|È6p‘0§)o¥ctî§H+CA-“ xØ|ÐXŠç l8íºð3Ø:³¤¬KX¯UÿÙ # -*- test-case-name: twisted.logger.test.test_format -*- # Copyright (c) Twisted Matrix Laboratories. # See LICENSE for details. """ Tools for formatting logging events. """ from datetime import datetime as DateTime from twisted.python.compat import unicode from twisted.python.failure import Failure from twisted.python.reflect import safe_repr from twisted.python._tzhelper import FixedOffsetTimeZone from ._flatten import flatFormat, aFormatter timeFormatRFC3339 = "%Y-%m-%dT%H:%M:%S%z" def formatEvent(event): """ Formats an event as a L{unicode}, using the format in C{event["log_format"]}. This implementation should never raise an exception; if the formatting cannot be done, the returned string will describe the event generically so that a useful message is emitted regardless. @param event: A logging event. @type event: L{dict} @return: A formatted string. @rtype: L{unicode} """ return eventAsText( event, includeTraceback=False, includeTimestamp=False, includeSystem=False, ) def formatUnformattableEvent(event, error): """ Formats an event as a L{unicode} that describes the event generically and a formatting error. @param event: A logging event. @type event: L{dict} @param error: The formatting error. @type error: L{Exception} @return: A formatted string. @rtype: L{unicode} """ try: return ( u"Unable to format event {event!r}: {error}" .format(event=event, error=error) ) except BaseException: # Yikes, something really nasty happened. # # Try to recover as much formattable data as possible; hopefully at # least the namespace is sane, which will help you find the offending # logger. failure = Failure() text = u", ".join( u" = ".join((safe_repr(key), safe_repr(value))) for key, value in event.items() ) return ( u"MESSAGE LOST: unformattable object logged: {error}\n" u"Recoverable data: {text}\n" u"Exception during formatting:\n{failure}" .format(error=safe_repr(error), failure=failure, text=text) ) def formatTime(when, timeFormat=timeFormatRFC3339, default=u"-"): """ Format a timestamp as text. Example:: >>> from time import time >>> from twisted.logger import formatTime >>> >>> t = time() >>> formatTime(t) u'2013-10-22T14:19:11-0700' >>> formatTime(t, timeFormat="%Y/%W") # Year and week number u'2013/42' >>> @param when: A timestamp. @type then: L{float} @param timeFormat: A time format. @type timeFormat: L{unicode} or L{None} @param default: Text to return if C{when} or C{timeFormat} is L{None}. @type default: L{unicode} @return: A formatted time. @rtype: L{unicode} """ if (timeFormat is None or when is None): return default else: tz = FixedOffsetTimeZone.fromLocalTimeStamp(when) datetime = DateTime.fromtimestamp(when, tz) return unicode(datetime.strftime(timeFormat)) def formatEventAsClassicLogText(event, formatTime=formatTime): """ Format an event as a line of human-readable text for, e.g. traditional log file output. The output format is C{u"{timeStamp} [{system}] {event}\\n"}, where: - C{timeStamp} is computed by calling the given C{formatTime} callable on the event's C{"log_time"} value - C{system} is the event's C{"log_system"} value, if set, otherwise, the C{"log_namespace"} and C{"log_level"}, joined by a C{u"#"}. Each defaults to C{u"-"} is not set. - C{event} is the event, as formatted by L{formatEvent}. Example:: >>> from __future__ import print_function >>> from time import time >>> from twisted.logger import formatEventAsClassicLogText >>> from twisted.logger import LogLevel >>> >>> formatEventAsClassicLogText(dict()) # No format, returns None >>> formatEventAsClassicLogText(dict(log_format=u"Hello!")) u'- [-#-] Hello!\\n' >>> formatEventAsClassicLogText(dict( ... log_format=u"Hello!", ... log_time=time(), ... log_namespace="my_namespace", ... log_level=LogLevel.info, ... )) u'2013-10-22T17:30:02-0700 [my_namespace#info] Hello!\\n' >>> formatEventAsClassicLogText(dict( ... log_format=u"Hello!", ... log_time=time(), ... log_system="my_system", ... )) u'2013-11-11T17:22:06-0800 [my_system] Hello!\\n' >>> @param event: an event. @type event: L{dict} @param formatTime: A time formatter @type formatTime: L{callable} that takes an C{event} argument and returns a L{unicode} @return: A formatted event, or L{None} if no output is appropriate. @rtype: L{unicode} or L{None} """ eventText = eventAsText(event, formatTime=formatTime) if not eventText: return None eventText = eventText.replace(u"\n", u"\n\t") return eventText + u"\n" class CallMapping(object): """ Read-only mapping that turns a C{()}-suffix in key names into an invocation of the key rather than a lookup of the key. Implementation support for L{formatWithCall}. """ def __init__(self, submapping): """ @param submapping: Another read-only mapping which will be used to look up items. """ self._submapping = submapping def __getitem__(self, key): """ Look up an item in the submapping for this L{CallMapping}, calling it if C{key} ends with C{"()"}. """ callit = key.endswith(u"()") realKey = key[:-2] if callit else key value = self._submapping[realKey] if callit: value = value() return value def formatWithCall(formatString, mapping): """ Format a string like L{unicode.format}, but: - taking only a name mapping; no positional arguments - with the additional syntax that an empty set of parentheses correspond to a formatting item that should be called, and its result C{str}'d, rather than calling C{str} on the element directly as normal. For example:: >>> formatWithCall("{string}, {function()}.", ... dict(string="just a string", ... function=lambda: "a function")) 'just a string, a function.' @param formatString: A PEP-3101 format string. @type formatString: L{unicode} @param mapping: A L{dict}-like object to format. @return: The string with formatted values interpolated. @rtype: L{unicode} """ return unicode( aFormatter.vformat(formatString, (), CallMapping(mapping)) ) def _formatEvent(event): """ Formats an event as a L{unicode}, using the format in C{event["log_format"]}. This implementation should never raise an exception; if the formatting cannot be done, the returned string will describe the event generically so that a useful message is emitted regardless. @param event: A logging event. @type event: L{dict} @return: A formatted string. @rtype: L{unicode} """ try: if "log_flattened" in event: return flatFormat(event) format = event.get("log_format", None) if format is None: return u"" # Make sure format is unicode. if isinstance(format, bytes): # If we get bytes, assume it's UTF-8 bytes format = format.decode("utf-8") elif not isinstance(format, unicode): raise TypeError( "Log format must be unicode or bytes, not {0!r}".format(format) ) return formatWithCall(format, event) except BaseException as e: return formatUnformattableEvent(event, e) def _formatTraceback(failure): """ Format a failure traceback, assuming UTF-8 and using a replacement strategy for errors. Every effort is made to provide a usable traceback, but should not that not be possible, a message and the captured exception are logged. @param failure: The failure to retrieve a traceback from. @type failure: L{twisted.python.failure.Failure} @return: The formatted traceback. @rtype: L{unicode} """ try: traceback = failure.getTraceback() if isinstance(traceback, bytes): traceback = traceback.decode('utf-8', errors='replace') except BaseException as e: traceback = ( u"(UNABLE TO OBTAIN TRACEBACK FROM EVENT):" + unicode(e) ) return traceback def _formatSystem(event): """ Format the system specified in the event in the "log_system" key if set, otherwise the C{"log_namespace"} and C{"log_level"}, joined by a C{u"#"}. Each defaults to C{u"-"} is not set. If formatting fails completely, "UNFORMATTABLE" is returned. @param event: The event containing the system specification. @type event: L{dict} @return: A formatted string representing the "log_system" key. @rtype: L{unicode} """ system = event.get("log_system", None) if system is None: level = event.get("log_level", None) if level is None: levelName = u"-" else: levelName = level.name system = u"{namespace}#{level}".format( namespace=event.get("log_namespace", u"-"), level=levelName, ) else: try: system = unicode(system) except Exception: system = u"UNFORMATTABLE" return system def eventAsText( event, includeTraceback=True, includeTimestamp=True, includeSystem=True, formatTime=formatTime, ): r""" Format an event as a unicode string. Optionally, attach timestamp, traceback, and system information. The full output format is: C{u"{timeStamp} [{system}] {event}\n{traceback}\n"} where: - C{timeStamp} is the event's C{"log_time"} value formatted with the provided C{formatTime} callable. - C{system} is the event's C{"log_system"} value, if set, otherwise, the C{"log_namespace"} and C{"log_level"}, joined by a C{u"#"}. Each defaults to C{u"-"} is not set. - C{event} is the event, as formatted by L{formatEvent}. - C{traceback} is the traceback if the event contains a C{"log_failure"} key. In the event the original traceback cannot be formatted, a message indicating the failure will be substituted. If the event cannot be formatted, and no traceback exists, an empty string is returned, even if includeSystem or includeTimestamp are true. @param event: A logging event. @type event: L{dict} @param includeTraceback: If true and a C{"log_failure"} key exists, append a traceback. @type includeTraceback: L{bool} @param includeTimestamp: If true include a formatted timestamp before the event. @type includeTimestamp: L{bool} @param includeSystem: If true, include the event's C{"log_system"} value. @type includeSystem: L{bool} @param formatTime: A time formatter @type formatTime: L{callable} that takes an C{event} argument and returns a L{unicode} @return: A formatted string with specified options. @rtype: L{unicode} @since: Twisted 18.9.0 """ eventText = _formatEvent(event) if includeTraceback and 'log_failure' in event: f = event['log_failure'] traceback = _formatTraceback(f) eventText = u"\n".join((eventText, traceback)) if not eventText: return eventText timeStamp = u"" if includeTimestamp: timeStamp = u"".join([formatTime(event.get("log_time", None)), " "]) system = u"" if includeSystem: system = u"".join([ u"[", _formatSystem(event), u"]", u" " ]) return u"{timeStamp}{system}{eventText}".format( timeStamp=timeStamp, system=system, eventText=eventText, )