Cache if package maintainer is an author of the package to avoid multiple API calls

src/DynamoPackages/PackageManagerClient.cs

@@ -31,6 +31,11 @@ public class PackageManagerClient
         ///     The directory where new packages are created during the upload process.
         /// </summary>
         private readonly string packageUploadDirectory;
+
+        /// <summary>
+        ///     The dictionay stores the package name corresponding to the boolean result of whether the user is an author of that package or not.
+        /// </summary>
+        private Dictionary<string, bool> packageMaintainers;
 
         /// <summary>
         ///     The URL of the package manager website
@@ -47,6 +52,7 @@ internal PackageManagerClient(IGregClient client, IPackageUploadBuilder builder,
             this.packageUploadDirectory = packageUploadDirectory;
             this.uploadBuilder = builder;
             this.client = client;
+            this.packageMaintainers = new Dictionary<string, bool>();
         }
 
         internal bool Upvote(string packageId)
@@ -277,9 +283,15 @@ internal PackageManagerResult Undeprecate(string name)
 
         internal bool DoesCurrentUserOwnPackage(Package package,string username) 
         {
+            bool value;
+            if (this.packageMaintainers.Count > 0 && this.packageMaintainers.TryGetValue(package.Name, out value)) {
+                return value;
+            }
             var pkg = new PackageInfo(package.Name, new Version(package.VersionName));
             var mnt = GetPackageMaintainers(pkg);
-            return (mnt != null) && (mnt.maintainers.Any(maintainer => maintainer.username.Equals(username)));
+            value = (mnt != null) && (mnt.maintainers.Any(maintainer => maintainer.username.Equals(username)));
+            this.packageMaintainers[package.Name] = value;
+            return value;
         }
     }
 }