add a lock instead of an init queue to the restore() operation.

Author: scbedd

tools/test-proxy/Azure.Sdk.Tools.TestProxy/Store/GitAssetsConfiguration.cs

@@ -127,7 +127,7 @@ public bool IsAssetsRepoInitialized(bool autoCreate = true)
         {
             var location = Path.Join(ResolveAssetRepoLocation().ToString(), ".git");
 
-            return Directory.Exists(location);
+            return Directory.Exists(location) | File.Exists(location);
         }
     }
 }

tools/test-proxy/Azure.Sdk.Tools.TestProxy/Store/GitStore.cs

@@ -41,6 +41,7 @@ public class GitStore : IAssetsStore
         public static readonly string GIT_COMMIT_OWNER_ENV_VAR = "GIT_COMMIT_OWNER";
         public static readonly string GIT_COMMIT_EMAIL_ENV_VAR = "GIT_COMMIT_EMAIL";
         private bool LocalCacheRefreshed = false;
+        public readonly object LocalCacheLock = new object();
 
         public GitStoreBreadcrumb BreadCrumb = new GitStoreBreadcrumb();
 
@@ -511,16 +512,14 @@ public static string GetCloneUrl(string assetsRepo, string repositoryLocation, b
         /// <param name="config"></param>
         public bool IsAssetsRepoInitialized(GitAssetsConfiguration config)
         {
-            // we have to ensure that multiple threads hitting this same segment of code won't stomp on each other
-            if (!LocalCacheRefreshed)
+            // we have to ensure that multiple threads hitting this same segment of code won't stomp on each other. restore is incredibly important.
+            lock (LocalCacheLock)
             {
-                var breadCrumbQueue = InitTasks.GetOrAdd("breadcrumbload", new TaskQueue());
-                breadCrumbQueue.Enqueue(() =>
+                if (!LocalCacheRefreshed)
                 {
-
                     BreadCrumb.RefreshLocalCache(Assets, config);
                     LocalCacheRefreshed = true;
-                });
+                }
             }
 
             if (Assets.ContainsKey(config.AssetsJsonRelativeLocation.ToString()))