Let’s talk about logs Baby 

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System.Windows.Data Error: BindingExpression path error: 'CanExecute' property not found on 'Deezer.UI.DelegateCommand' 'Deezer.UI.DelegateCommand' (HashCode=15035499). BindingExpression: Path='PlayCommand.CanExecute' DataItem='Deezer.DeezerAudioViewModel' (HashCode=1101770); target element is 'System.Windows.Controls.Button' (Name=''); target property is 'IsEnabled' (type 'System.Boolean').. System.Windows.Data Error: BindingExpression path error: 'CanExecute' property not found on 'Deezer.UI.DelegateCommand' 'Deezer.UI.DelegateCommand' (HashCode=9915935). BindingExpression: Path='PauseCommand.CanExecute' DataItem='Deezer.DeezerAudioViewModel' (HashCode=1101770); target element is 'System.Windows.Controls.Button' (Name=''); target property is 'IsEnabled' (type 'System.Boolean').. [15:18:22] App : DAVM Update Shuffle repeat status 'TaskHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Globalization.ni.dll'. Cannot find or open the PDB file. 'TaskHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Collections.ni.dll'. Cannot find or open the PDB file. 'TaskHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.IO.ni.dll'. Cannot find or open the PDB file. $$$$$$$$$$$$$$$$$$ HasAccessToDeezer> result=True, request took (ms): 1136 [15:18:22] DeezerRuntimeSettings : UpdateInternetAccess: [forced=False] before=True, after=True ROOT FRAME NAVIGATING (uri='/Login') BOOTSCREEN> ManageUnloggedUser - Time elapsed (ms): 1160 'TaskHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Linq.ni.dll'. Cannot find or open the PDB file. BOOTSCREEN> END - Time elapsed (ms): 1252<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< +++++++++++++++++++++++ PAGE CREATED 'LoginPage' +++++++++++++++++++++++ 'TaskHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Reflection.ni.dll'. Cannot find or open the PDB file. 'TaskHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\Data\Programs\{0AC0860A-B966-4004-817C-8AB50BD22511}\Install\microsoft.expression.drawing.DLL'. Cannot find or open the PDB file. 'TaskHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Runtime.Extensions.ni.dll'. Cannot find or open the PDB file. 'TaskHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Threading.ni.dll'. Cannot find or open the PDB file. 'TaskHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Dynamic.Runtime.ni.dll'. Cannot find or open the PDB file. 'TaskHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Linq.Expressions.ni.dll'. Cannot find or open the PDB file. [15:18:23] App : >>>>>>>>>>>>>>>>>>>>>>>>>> Resetting Navigation Stack (removeHome=True) <<<<<<<<<<<<<<<<<<<<<<<< 'TaskHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.ServiceModel.Web.ni.dll'. Cannot find or open the PDB file. [15:18:23] DeezerDataProvider : MobileAuthenticate(buildId=WindowsPhone8, version=2.4.0.0, lang=us) 'TaskHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Reflection.Extensions.ni.dll'. Cannot find or open the PDB file. [15:18:23] HttpDataClient : ExecuteQuery(uri=http://api.deezer.com?&buildId=WindowsPhone8&version=2.4.0.0&operator=Fake GSM Network&lang=us, postData=) 'TaskHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.ObjectModel.ni.dll'. Cannot find or open the PDB file. 'TaskHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Xml.XDocument.ni.dll'. Cannot find or open the PDB file. 'TaskHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Text.RegularExpressions.ni.dll'. Cannot find or open the PDB file. 'TaskHost.exe' (CoreCLR: Silverlight AppDomain): Loaded 'Anonymously Hosted DynamicMethods Assembly'. [15:18:25] DeezerDataProvider : >>>>>>>>>>>>>>>>>>>>>>> DataServerUrl changed -> doing auth on new server. [15:18:25] DeezerDataProvider : MobileAuthenticate(buildId=WindowsPhone8, version=2.4.0.0, lang=us) [15:18:25] HttpDataClient : ExecuteQuery(uri=https://api.deezer.com/? &buildId=WindowsPhone8&version=2.4.0.0&operator=Fake GSM Network&lang=us, postData=) 

Donner du sens à ses logs : Semantic logging •TechLogs ?  •Microsoft Semantic Loggin AB (EntLib) 

Donner du sens à ses logs : Semantic logging [Event(1, Message = "Application Failure: {0}", Level = EventLevel.Critical, Keywords = Keywords.Diagnostic)] internal void Failure(string message) { this.WriteEvent(1, message); } [Event(2, Message = "Starting up.", Keywords = Keywords.Perf, Level = EventLevel.Informational)] internal void Startup() 

Les logs n’ont pas qu’une vie •Debug •Prod / DevOps •Analytics •Advertising, support, user testing, … 

When Markdown ❤ logs It’s a #loghash ! 

Loghash Manifesto •Un moyen simple de sémantiser ses logs •Commencer petit, sans friction • Bring your own logs • Bring your own log library • Bring yourself only, not all your team • … •Rendre les logs pertinents sur tout le cycle de vie de l’app 

www.loghash.com 

Loghash 101 Toute chaîne de caractère est une chaîne Loghash 

Loghash 101 - Tagging Un hashtag permet de catégoriser une ligne de log Starting catalog import of Katy Perry album from EMI Starting #catalog #import of Katy Perry album from EMI 

Loghash 101 - Tagging Starting #catalog #import of Katy Perry album from EMI Starting #catalog.import of Katy Perry album from EMI 

Loghash 101 - Tagging #error #catalog.import of Katy Perry album from EMI failed • #error • #warn • #info • #debug • #trace 

Loghash 101 - Identifiers #catalog.import started from @provider:emi for @artist:"Katy Perry" 

Loghash 101 – Object dumps Google Play callback: #inapppurchase @userid:42 @{"iap-product-id":42,"success":true} 

Loghash 101 – Secure content User license renewed @$userEncryptionKey:"sdhq238hfkqsd82hf=" 

Loghash 101 – Mais encore… • Compteurs (Graphite ? Kibana ?) @{"__count":"user.offlinealbums","v":1} • Timings @{"__timing":"account creation","d":323} • Progressions @{"__progress":"demo","p":0.3721} • Custom viewers @{"__e":"android.activity.lifecycle","d":{"name":"feedactivit y","status":"created"}} 

What’s next ? •Logstash ingestion plugin (log > Kibana) •Complete JS parser lib •Complete C# parser lib •Web interface •Logger libs •Visual Studio plugin, NSLogger app, ADB tool, … 

Qui utilise ce machin là ? 

Catalog team @date:"2015-03-17 14:43:11" #info #album @id:9727118 #publish @date:"2015-03-17 14:43:11" #info #track @id:68732528 #publish @date:"2015-03-17 14:43:11" #warn #track @id:68732528 #waiting @date:"2015-03-17 14:43:11" #error #album @id:9727118 #exception @message:"THIS IS ERROR MESSAGE !" @date:"2015-03-17 14:43:11" #info #album @id:9727118 #publish @date:"2015-03-17 14:50:38" #info #track @id:101038241 #skip @date:"2015-03-17 14:50:38" #info #track @id:101037571 #skip 

Qui utilise ce machin là ? 

Avant command> nice -n 20 php -c ~/php.ini -d memory_limit=4000M script.php --debug -- name='catalog/import/indexer' --provider-id='2' --host='172.16.1.103' --port='11112' >> /data/tmp/script_server/logs/romain_indexer_2015-03-18.log & command> nice -n 20 php -c ~/php.ini -d memory_limit=4000M script.php --debug -- name='catalog/import/indexer' --provider-id='3' --host='172.16.1.103' --port='11112' >> /data/tmp/script_server/logs/romain_indexer_2015-03-18.log & command> nice -n 20 php -c ~/php.ini -d memory_limit=4000M script.php --debug -- name='catalog/import/parser' --delivery-id='143081' --provider-id='2' --host='172.16.1.103' --port='11112' >> /data/tmp/script_server/logs/romain_parser_2015-03-18.log & command> nice -n 20 php -c ~/php.ini -d memory_limit=4000M script.php --debug -- name='catalog/import/simulatevdo' --delivery-id='143081' --provider-id='2' -- host='172.16.1.103' --port='11112' >> /data/tmp/script_server/logs/romain_simulatevdo_2015- 03-18.log & command> nice -n 20 php -c ~/php.ini -d memory_limit=4000M script.php --debug -- name='catalog/import/parser' --delivery-id='143091' --provider-id='2' --host='172.16.1.103' --port='11112' >> /data/tmp/script_server/logs/romain_parser_2015-03-18.log & command> nice -n 20 php -c ~/php.ini -d memory_limit=4000M script.php --debug -- name='catalog/import/simulatevdo' --delivery-id='143091' --provider-id='2' -- host='172.16.1.103' --port='11112' >> /data/tmp/script_server/logs/romain_simulatevdo_2015- 03-18.log & command> nice -n 20 php -c ~/php.ini -d memory_limit=4000M script.php --debug -- name='catalog/import/parser' --delivery-id='143101' --provider-id='2' --host='172.16.1.103' 

Après @date:"2015-03-07 23:01:29" #indexer @{"provider_id":1,"host":"10.101.1.127","port":11111} @date:"2015-03-07 23:56:48" #importer @{"delivery_id":39654811,"provider_id":1,"host":"10.101.1.127","port":111 11} @date:"2015-03-07 23:56:55" #importer @{"delivery_id":39654821,"provider_id":1,"host":"10.101.1.127","port":111 11} @date:"2015-03-07 23:56:57" #importer @{"delivery_id":39654831,"provider_id":1,"host":"10.101.1.127","port":111 11} @date:"2015-03-10 04:20:14" #indexer @{"provider_id":548,"host":"10.101.1.127","port":11111} @date:"2015-03-10 04:20:14" #indexer @{"provider_id":552,"host":"10.101.1.127","port":11111} @date:"2015-03-10 04:20:14" #indexer @{"provider_id":554,"host":"10.101.1.127","port":11111} 

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Qui utilise ce machin là ? •Deezer ! • Windows Phone • Equipe Catalogue • Vous tous dès cet aprèm  • (moi, dans mes projets perso) 

Questions ?