避免重复的 ChangeToken.OnChange

Author: maikebing

Demo/Program.cs

@@ -1,12 +1,13 @@
+using Microsoft.Extensions.Primitives;
+
 var builder = WebApplication.CreateBuilder(args);
 builder.Services.AddControllers();
 builder.Services.AddOpenApi();
 builder.Configuration.AddUserSecrets("personal_access_tokens");
 builder.Configuration.AddGitRepository(cfg => cfg.WithGitLab()
-                                                .WithHostUrl("https://git.uixe.net/")
-                                                .WithRepositoryPath("uixe/stdlanedevctlsvr")
+                                                .WithRepositoryPath("IoTSharp/gitlabcfg")
                                                 .WithAuthenticationToken(builder.Configuration.GetValue<string>("personal_access_tokens"))
-                                                .WithFileName($"{Environment.GetEnvironmentVariable("UIXEID")}/appsettings.{builder.Environment.EnvironmentName}.json")
+                                                .WithFileName($"appsettings.json")
                                                 .WithCache($"{builder.Environment.ContentRootPath}{System.IO.Path.DirectorySeparatorChar}appsettings.{builder.Environment.EnvironmentName}.json")
                                         );
 
@@ -18,6 +19,22 @@
     app.MapOpenApi();
 }
 Console.WriteLine($"abc={app.Configuration.GetValue<string>("abc")}");
-app.UseAuthorization();
+
+ChangeToken.OnChange(() => app.Configuration.GetReloadToken(), () =>
+ {
+     Console.WriteLine($"abc={app.Configuration.GetValue<string>("abc")}");
+     var settings = app.Configuration.Get<AppSettings>();
+     foreach (var item in settings?.Menus)
+     {
+         Console.WriteLine($"Menu={item}");
+     }  
+ });
+ app.UseAuthorization();
 app.MapControllers();
-app.Run();
+app.Run();
+
+public class AppSettings
+{
+    public List<string> Menus { get; set; } = new List<string>();
+
+}

Demo/appsettings.Development.json

@@ -5,6 +5,13 @@
       "Microsoft.AspNetCore": "Warning"
     }
   },
-  "abc": 12223467,
-  "sdfsd": "asdfsadfasd"
+  "sdfsd": "asdfsadfasd",
+  "abc": 1232323223,
+  "Menus": [
+    "App",
+    "abc",
+    "fdsfsdfsd",
+    "sadfsdfsd12",
+    "sdfasdfasds"
+  ]
 }

Extensions.Configuration.GitRepository/GitRepositoryConfigurationProvider.cs

@@ -64,10 +64,9 @@ private void SyncGitRepoFile()
                 {
                     _jsonData = ReadCache();
                 }
-                 ReadGitRepo( ref _jsonData);
-                if (_jsonData != null)
+               bool result=  ReadGitRepo( ref _jsonData);
+                if (_jsonData != null && result)
                 {
-
                     Data = JsonConfigurationFileParser.Parse(_jsonData);
                     OnReload();
                 }
@@ -84,8 +83,9 @@ private void SyncGitRepoFile()
             }
         }
 
-        private void  ReadGitRepo( ref JsonDocument _jsonData)
+        private bool  ReadGitRepo( ref JsonDocument _jsonData)
         {
+            bool result = false;
             try
             {
                 if (__gitRepo.FileExists(_options.FileName))
@@ -97,6 +97,7 @@ private void  ReadGitRepo( ref JsonDocument _jsonData)
                         if (_jsonData != null)
                         {
                             SaveCache(fileContent);
+                            result = true;
                         }
                     }
                     else
@@ -109,6 +110,7 @@ private void  ReadGitRepo( ref JsonDocument _jsonData)
                             string _json = _jn.ToJsonString(new JsonSerializerOptions() { WriteIndented = true });
                             SaveCache(_json);
                             _jsonData = JsonDocument.Parse(_json);
+                            result = true;
 
                         }
                     }
@@ -126,6 +128,7 @@ private void  ReadGitRepo( ref JsonDocument _jsonData)
                 Console.WriteLine(ex1.ToString());
 
             }
+            return result;
         }
 
         private JsonDocument ReadCache()