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captainsafia / events-prototype-host-interactions.md
Last active February 3, 2024 21:51

Note

The details shared here are based on the prototyping done as of 2/3/2024. If you're reading this gist at a later time, the details might have changed. In any case, it's here for archival reasons.

This gist is written in response to a tweet by Adam Storr (@WestDiscGolf) in response to a code sample that was shared of the current prototype of our workstream to sharpen up event-based apps.

Sure. The "with provider" and "map events" methods, how they work together and are processed under the hood. For example when/how a message arrives and triggers the binding/handler. Thanks for your reply :-)

The prototype code looks like this:




  


  




    


          
    

      

        
        

          

              @captainsafia
          

          

            
                captainsafia
                / Program.cs
            
            

              Last active
              December 11, 2023 06:57
            

              
                Titan: the small but mighty API framework (requires .NET 7)
              
          

        

      

        

  

    
    


        



  


  

        

          
          using System.Net;
        

        

          
          using System.Text;
        

        

          
          

        

        

          
          var port = 8080;
        

        

          
          var server = new Server(port);
        

        

          
          

        

        

          
          server.UseAuthentication();
        

        

          
          server.UseRouting();
        

        

          
          server.UseNotFoundPage();
        

  





    


  




    


          
    

      

        
        

          

              @captainsafia
          

          

            
                captainsafia
                / minimal-api-sample-apps.md
            
            

              Last active
              November 8, 2023 11:48
            

          

        

      

        

  

      

    
  


  




    


          
    

      

        
        

          

              @captainsafia
          

          

            
                captainsafia
                / test-output.txt
            
            

              Created
              September 16, 2020 17:56
            

          

        

      

        

  

    
    


        



  


  

        

          
          make: Entering directory '/home/captainsafia/github.com/dotnet/runtime/src/mono/wasm'
        

        

          
          /home/captainsafia/github.com/dotnet/runtime/dotnet.sh build --configuration debug --nologo /p:TargetArchitecture=wasm /p:TargetOS=Browser /p:Configuration=Debug /p:RuntimeConfiguration=Release /home/captainsafia/github.com/dotnet/runtime/src/mono/wasm/debugger/tests/debugger-test
        

        

          
            Determining projects to restore...
        

        

          
            All projects are up-to-date for restore.
        

        

          
            Determining projects to restore...
        

        

          
            All projects are up-to-date for restore.
        

        

          
            WasmAppBuilder -> /home/captainsafia/github.com/dotnet/runtime/artifacts/bin/WasmAppBuilder/Debug/net5.0/WasmAppBuilder.dll
        

        

          
            WasmAppBuilder -> /home/captainsafia/github.com/dotnet/runtime/artifacts/bin/WasmAppBuilder/Debug/net5.0/publish/
        

        

          
            debugger-test -> /home/captainsafia/github.com/dotnet/runtime/artifacts/bin/debugger-test/wasm/Debug/debugger-test.dll
        

  





    


  




    


          
    

      

        
        

          

              @captainsafia
          

          

            
                captainsafia
                / test.binlog
            
            

              Created
              August 4, 2020 21:22
            

          

        

      

        

  

        

      This file has been truncated, but you can view the full file.
    


    


        



  


  

        

          
          ãÏΩ`$YY/>=3;≥3ô˜˚π€Û⁄I≤ìÓŒ£ìÃÑ:ùN¶ôºHw2+Œ⁄V∫+IÌTW5U’yÃ≤¿" Ëe—ã¢"EPƒ'ˇ{UTƒr≈+
        

        

          
          xˇ»S\‰≠ÇäWÓy’˚‘©Í$›]=ª∞ªIͺæsŒÔ˚ŒwæÛùÔÏ⁄≤eK€Cs√Ç4./é
        

        

          
          "?ÕiK≈gU^Q„EÆ¢qǧr_ÊaA(rö Kj|X‰Ó»©ëë˘û‚í¨jÒØÄÒ≤:_ƒRl^êDyÒøæ˜ΩÔÌGˇ˘û◊"{@”ú≤Z_‰ïüyÈÊî¡O‹ª5“ˆ–±tUQxIõÕ¶´¢VU¯áx©k6WsùÉ?•◊È€7©ã™ßh|)y Ú8≠Û¯\.=5í)åeÛÖTÓ∆t*ó+LÇkÒT•"›û‘*'FsZµ$»—¥\‚c\•OÀíHU„£
        

        

          
          WÊWdÂ∂áâ—κX·ïh˚/ïxÖW:ÏŸ'∏‚TŒ#ÁÖâ¢v\ÊJBQëUyAÀs "Ø©3<Wö탵ÌöRÂ#ÖÁ–ÊkQ–ñ™Û±¢\éódM‚µ8ßV¿è¢¨Ò˘ÑÏzx:]OçÂ∂%V€¶s›üå¥õπ;¢óFª¯XEëÀ≠PSQ( ¢¨®fl_`y‰Ò«/Ω¯“¬ÓKèÌΩÙ¯•ˆÓûπÃN…Ω,(=^Z~‰ÒK›=Àó¢±éK̜Ҡè?]S´≈"Ø™è<ÓìèWYy‰Ò;•`Æ5ûdÕ.D∑èß&«⁄x©0õãÕÊGª˜LŒM“#x∂vΩH>33QòûôõIMÊ23πÏ‘‰éÓXfl@¨˜¿»T~2ì/\ü Â”©¸ı
        

        

          
          }zj|j∂∏Œ%Í—˛Ù‘‰H™êæÕÄ…ÿ*…˜‰Æg∆«ÔçæäflQóvéOçM¶&2{¨ÕÇ<„s„ëfi˚çÈÒl!üœLdÚ3flW»er∞Ÿëã=•~`a`æ´Øßo°´Ø/¡u]MÙp]Ω|i†o`∞ƒœóv‰'¶G≤3›ÒeNâ/»b	ˆ±‘_Ë}°tµwMÍÔª3∏ÿ/ˆı]]],™}	øE)ûèü®ùÕéè‰S3cô¸‘l~z6àÀNé!∞Ó'®Œç‹P°®ππÓÒSK∑„…X"÷ùHt)≈Xw¨'—óËçu_çÁJ∑’623SS˘¡ı∂±"c8;ŸC´ &-ó°PTë`ê«óª˚bÄ$8KßÊ≤3˘Ÿ‘x!39W…ÊR√„à©âȸ÷Óû6ãòyAmfÜW™"?Û´‡+¶t(^Tÿè€NUcÍ“	2≥„˘Ïxf.3^üö∫1;IϱÇ|«≤Z
        

  





    


  




    


          
    

      

        
        

          

              @captainsafia
          

          

            
                captainsafia
                / debugger.md
            
            

              Last active
              May 18, 2020 17:32
            

          

        

      

        

  

      

    
Scenario 0: Debugging standalone application


    

  1. 

    Create a new Blazor WASM application from the CLI using dotnet new blazorwasm -o Scenario0
    

    2. 

  2. 

    Open the "Scenario0" directory in VS Code.
    

    3. 

  3. 

    Navigate to the "Debug" section on the left. Then, click "create a launch.json file". In the window that pops up, select "Blazor WebAssembly Debug".
    
image-20200517115925932

    4. 

  4. 

    A new launch.json file should be created with the following contents.
    

    5. 




  


  




    


          
    

      

        
        

          

              @captainsafia
          

          

            
                captainsafia
                / debugger-with-breakpoint.json
            
            

              Created
              May 18, 2020 17:05
            

          

        

      

        

  

    
    


        



  


  

        

          
          {"timestamp":1589821464413,"tag":"runtime.welcome","level":1,"message":"js-debug-nightly v2020.5.1517 started","metadata":{"os":"darwin x64","nodeVersion":"v12.8.1","adapterVersion":"2020.5.1517"}}
        

        

          
          {"tag":"dap.receive","timestamp":1589821464390,"metadata":{"connectionId":2,"message":{"command":"initialize","arguments":{"clientID":"vscode","clientName":"Visual Studio Code","adapterID":"pwa-chrome","pathFormat":"path","linesStartAt1":true,"columnsStartAt1":true,"supportsVariableType":true,"supportsVariablePaging":true,"supportsRunInTerminalRequest":true,"locale":"en-us","supportsProgressReporting":true},"type":"request","seq":1}},"level":0}
        

        

          
          {"tag":"dap.send","timestamp":1589821464391,"metadata":{"connectionId":2,"message":{"seq":1,"type":"response","request_seq":1,"command":"initialize","success":true,"body":{"supportsConfigurationDoneRequest":true,"supportsFunctionBreakpoints":false,"supportsConditionalBreakpoints":true,"supportsHitConditionalBreakpoints":true,"supportsEvaluateForHovers":true,"exceptionBreakpo
        

  





    


  




    


          
    

      

        
        

          

              @captainsafia
          

          

            
                captainsafia
                / epics.ts
            
            

              Last active
              January 15, 2020 03:25
            

          

        

      

        

  

    
    


        



  


  

        

          
          /** Launch a new kernel when the app host token changes. **/
        

        

          
          const launchKernelWhenTokenChanged = (action$, state$) =>
        

        

          
            // Whenever a new kernel is launched we execute this logic
        

        

          
            action$.pipe(ofType("LAUNCH_KERNEL_SUCCESSFUL"),
        

        

          
            switchMap((action) => 
        

        

          
            // We subscribe to the StateObservable, which is a stream of changes to the Redux state
        

        

          
            state$.pipe(
        

        

          
              // We pull out the property we care about, the token field in the core state
        

        

          
              pluck("app", "host", "token"),
        

        

          
              // We only move on to the next step if it has changed https://www.learnrxjs.io/operators/filtering/distinctuntilchanged.html
        

  





    


  




    


          
    

      

        
        

          

              @captainsafia
          

          

            
                captainsafia
                / epics.ts
            
            

              Last active
              January 15, 2020 00:10
            

          

        

      

        

  

    
    


        



  


  

        

          
          export const updateDisplayEpic = (
        

        

          
            action$: ActionsObservable<
        

        

          
              actions.NewKernelAction | actions.KillKernelSuccessful
        

        

          
            >
        

        

          
          ) =>
        

        

          
            // Global message watcher so we need to set up a feed for each new kernel
        

        

          
            action$.pipe(
        

        

          
              ofType(actions.LAUNCH_KERNEL_SUCCESSFUL),
        

        

          
              switchMap(
        

        

          
                (action: actions.NewKernelAction | actions.KillKernelSuccessful) =>
        

  





    


  




    


          
    

      

        
        

          

              @captainsafia
          

          

            
                captainsafia
                / design-doc.md
            
            

              Last active
              November 21, 2019 16:51
            

          

        

      

        

  

      

    
Template for longer design doc


I use this when I feel that I need more structure to organize my thinking around a problem.


Problem


Goals


Proposed Solution


Implementation


Note: This is different from proposed solution because it will go into technical details.


Testing and Perf