Controller methods should throw proper exceptions (#156)

* Controller methods should throw proper exceptions

LibraryStoreMigration/LibraryStoreMigration.csproj

@@ -0,0 +1,25 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Compile Include="..\ServerlessLibraryAPI\CosmosLibraryStore.cs" Link="CosmosLibraryStore.cs" />
+    <Compile Include="..\ServerlessLibraryAPI\ILibraryStore.cs" Link="ILibraryStore.cs" />
+    <Compile Include="..\ServerlessLibraryAPI\Models\LibraryItem.cs" Link="LibraryItem.cs" />
+    <Compile Include="..\ServerlessLibraryAPI\ServerlessLibrarySettings.cs" Link="ServerlessLibrarySettings.cs" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <EmbeddedResource Include="..\ServerlessLibraryAPI\wwwroot\items.json" Link="items.json" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Azure.DocumentDB.Core" Version="2.3.0" />
+    <PackageReference Include="System.Configuration.ConfigurationManager" Version="4.5.0" />
+    <PackageReference Include="WindowsAzure.Storage" Version="9.3.3" />
+  </ItemGroup>
+
+</Project>

LibraryStoreMigration/Program.cs

@@ -0,0 +1,135 @@
+using System;
+using System.Reflection;
+using System.IO;
+using ServerlessLibrary.Models;
+using System.Collections.Generic;
+using Newtonsoft.Json;
+using ServerlessLibrary;
+using Microsoft.WindowsAzure.Storage.Table;
+using Microsoft.WindowsAzure.Storage;
+using Microsoft.WindowsAzure.Storage.RetryPolicies;
+using System.Threading.Tasks;
+using System.Linq;
+
+namespace LibraryStoreMigration
+{
+    class Program
+    {
+        const string tableName = "slitemstats";
+        static void Main(string[] args)
+        {
+            if (args.Length < 1)
+            {
+                Console.WriteLine("Please enter specify operation to be performed (cosmosdb|stats)");
+                Console.WriteLine("Please note that connection informations need to be provided as environment variables.");
+                return;
+            }
+
+            if (args[0].Equals("cosmosdb", StringComparison.OrdinalIgnoreCase))
+            {
+                MigrateToCosmosDB();
+            }
+
+            if (args[0].Equals("stats", StringComparison.OrdinalIgnoreCase))
+            {
+                AddNewStatsColumns();
+            }
+        }
+
+        public static void AddNewStatsColumns()
+        {
+            TableRequestOptions tableRequestRetry = new TableRequestOptions { RetryPolicy = new LinearRetry(TimeSpan.FromSeconds(2), 3) };
+            TableQuery<NewSLItemStats> query = new TableQuery<NewSLItemStats>();
+            TableContinuationToken continuationToken = null;
+            List<NewSLItemStats> entities = new List<NewSLItemStats>();
+            CloudStorageAccount storageAccount = CloudStorageAccount.Parse(ServerlessLibrarySettings.SLStorageString);
+
+            CloudTableClient tableClient = storageAccount.CreateCloudTableClient();
+            CloudTable table = tableClient.GetTableReference(tableName);
+            var opContext = new OperationContext();
+            do
+            {
+                TableQuerySegment<NewSLItemStats> queryResults = (table).ExecuteQuerySegmentedAsync(query, continuationToken, tableRequestRetry, opContext).Result;
+                continuationToken = queryResults.ContinuationToken;
+                entities.AddRange(queryResults.Results);
+            } while (continuationToken != null);
+
+            Console.WriteLine(entities.Count);
+            List<LibraryItem> libraryItems = GetAllLibraryItemsFromFile();
+            foreach (var entity in entities)
+            {
+                entity.id = libraryItems.FirstOrDefault(l => l.Template == entity.template).Id;
+                entity.likes = 0;
+                entity.dislikes = 0;
+                TableOperation operation = TableOperation.InsertOrMerge(entity);
+                Task<TableResult> r = table.ExecuteAsync(operation);
+                TableResult a = r.Result;
+            }
+        }
+
+        public static void MigrateToCosmosDB()
+        {
+            var libraryItems = GetAllLibraryItemsFromFile();
+            Console.WriteLine("Number of samples to be migrated from file to cosmos db: {0}", libraryItems.Count);
+            CosmosLibraryStore libraryStore = new CosmosLibraryStore();
+
+            IList<LibraryItem> libraryItemsInCosmos = libraryStore.GetAllItems().Result;
+            Console.WriteLine("Number of samples already present in cosmos db: {0}", libraryItemsInCosmos.Count);
+
+            if (libraryItemsInCosmos.Count != libraryItems.Count)
+            {
+                foreach (LibraryItem libraryItem in libraryItems)
+                {
+                    if (!libraryItemsInCosmos.Any(c => c.Id == libraryItem.Id))
+                    {
+                        Console.WriteLine("Item {0} not present in cosmos db. will be migrated" + libraryItem.Id);
+                        try
+                        {
+                            libraryStore.Add(libraryItem).Wait();
+                            Console.WriteLine("Migrated sample with id {0}" + libraryItem.Id);
+                        }
+                        catch (Exception ex)
+                        {
+                            Console.WriteLine("Got exception {0}", ex);
+                            throw;
+                        }
+                    }
+                }
+
+                Console.WriteLine("Samples are successfully migrated to cosmos db");
+            }
+            else
+            {
+                Console.WriteLine("Samples are already migrated to cosmos db");
+            }
+        }
+
+        public static List<LibraryItem> GetAllLibraryItemsFromFile()
+        {
+            var assembly = Assembly.GetExecutingAssembly();
+            using (Stream stream = assembly.GetManifestResourceStream("LibraryStoreMigration.items.json"))
+            using (StreamReader reader = new StreamReader(stream))
+            {
+                string result = reader.ReadToEnd();
+                return JsonConvert.DeserializeObject<List<LibraryItem>>(result);
+            }
+        }
+    }
+
+    public class OldSLItemStats : TableEntity
+    {
+        public string template { get; set; }
+        public int totalDownloads { get; set; }
+        public int downloadsToday { get; set; }
+        public int downloadsThisWeek { get; set; }
+        public int downloadsThisMonth { get; set; }
+        public DateTime lastUpdated { get; set; }
+    }
+
+    public class NewSLItemStats : OldSLItemStats
+    {
+        public string id { get; set; }
+        public int likes { get; set; }
+        public int dislikes { get; set; }
+    }
+}

ServerlessLibraryAPI/CacheService.cs

@@ -73,34 +73,7 @@ namespace ServerlessLibrary
         {
             IList<LibraryItem> libraryItems;
             IList<LibraryItemWithStats> libraryItemsWithStats = new List<LibraryItemWithStats>();
-
-            if (cosmosDBInitialized)
-            {
             libraryItems = await this.libraryStore.GetAllItems(); 
-            }
-            else
-            {
-                libraryItems = await new FileLibraryStore(_env).GetAllItems();
-
-                if (!string.IsNullOrWhiteSpace(ServerlessLibrarySettings.CosmosEndpoint))
-                {
-                    IList<LibraryItem> libraryItemsInCosmos = await this.libraryStore.GetAllItems();
-                    if (libraryItemsInCosmos.Count == 0)
-                    {
-                        foreach (LibraryItem libraryItem in libraryItems)
-                        {
-                            this.libraryStore.Add(libraryItem);
-                        }
-                    }
-                    else
-                    {
-                        libraryItems = libraryItemsInCosmos;
-                    }
-
-                    cosmosDBInitialized = true;
-                }
-            }
-
             var stats = await StorageHelper.getSLItemRecordsAsync();            
             foreach (var storeItem in libraryItems)
             {

ServerlessLibraryAPI/Controllers/LibraryController.cs

@@ -5,6 +5,7 @@ using Microsoft.AspNetCore.Mvc;
 using System.Text.RegularExpressions;
 using ServerlessLibrary.Models;
 using Newtonsoft.Json;
+using System.Threading.Tasks;
 
 
 // For more information on enabling Web API for empty projects, visit https://go.microsoft.com/fwlink/?LinkID=397860
@@ -53,7 +54,7 @@ namespace ServerlessLibrary.Controllers
 
         [HttpPut]
         [ProducesResponseType(typeof(LibraryItem), 200)]
-        public IActionResult Put([FromBody]LibraryItem libraryItem)
+        public async Task<IActionResult> Put([FromBody]LibraryItem libraryItem)
         {
             if (!User.Identity.IsAuthenticated)
             {
@@ -74,7 +75,7 @@ namespace ServerlessLibrary.Controllers
             GitHubUser user = new GitHubUser(User);
             libraryItem.Author = user.UserName;
 
-            StorageHelper.submitContributionForApproval(JsonConvert.SerializeObject(libraryItem));
+            await StorageHelper.submitContributionForApproval(JsonConvert.SerializeObject(libraryItem));
             return new JsonResult(libraryItem);
         }
 

ServerlessLibraryAPI/Controllers/MetricsController.cs

@@ -1,6 +1,8 @@
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Logging;
 using Newtonsoft.Json;
 using ServerlessLibrary.Models;
+using System;
 
 namespace ServerlessLibrary.Controllers
 {
@@ -8,12 +10,26 @@ namespace ServerlessLibrary.Controllers
     [ApiController]
     public class MetricsController : ControllerBase
     {
+        private ILogger<MetricsController> logger;
+        public MetricsController(ILogger<MetricsController> logger)
+        {
+            this.logger = logger;
+        }
+
         // PUT api/<controller>/downloads
         [ProducesResponseType(typeof(bool), 200)]
         [HttpPut]
         public JsonResult Downloads([FromBody]string id)
         {
-            StorageHelper.updateUserStats(JsonConvert.SerializeObject(new { id, userAction = "download" }));
+            try
+            {
+                StorageHelper.updateUserStats(JsonConvert.SerializeObject(new { id, userAction = "download" })).Wait();
+            }
+            catch (Exception ex)
+            {
+                logger.LogError("Unable to update download count. Exception: {0}", ex.ToString());
+            }
+
             return new JsonResult(true);
         }
         // PUT api/<controller>/sentiment
@@ -28,13 +44,21 @@ namespace ServerlessLibrary.Controllers
                 return BadRequest("Invalid values for like or dislike count");
             }
 
+            try
+            {
                 StorageHelper.updateUserStats(JsonConvert.SerializeObject(new
                 {
                     id = sentimentPayload.Id,
                     userAction = "Sentiment",
                     likeChanges = sentimentPayload.LikeChanges,
                     dislikeChanges = sentimentPayload.DislikeChanges
-                                            }));
+                })).Wait();
+            }
+            catch (Exception ex)
+            {
+                logger.LogError("Unable to update Sentiments. Exception: {0}", ex.ToString());
+            }
+
             return new JsonResult(true);
         }
     }

ServerlessLibraryAPI/CosmosLibraryStore.cs

@@ -16,14 +16,11 @@ namespace ServerlessLibrary
     public class CosmosLibraryStore : ILibraryStore
     {
         public CosmosLibraryStore()
-        {
-            if (!string.IsNullOrWhiteSpace(ServerlessLibrarySettings.CosmosEndpoint))
         {
             CosmosDBRepository<LibraryItem>.Initialize();
         }
-        }
 
-        async public void Add(LibraryItem libraryItem)
+        public async Task Add(LibraryItem libraryItem)
         {
             await CosmosDBRepository<LibraryItem>.CreateItemAsync(libraryItem);
         }
@@ -35,7 +32,6 @@ namespace ServerlessLibrary
         }
     }
     
-
     /// <summary>
     /// Cosmos db APIs
     /// </summary>

ServerlessLibraryAPI/FileLibraryStore.cs

@@ -20,7 +20,7 @@ namespace ServerlessLibrary
             _env = env;
         }
 
-        public void Add(LibraryItem libraryItem)
+        public Task Add(LibraryItem libraryItem)
         {
             throw new NotImplementedException();
         }

ServerlessLibraryAPI/ILibraryStore.cs

@@ -13,7 +13,7 @@ namespace ServerlessLibrary
         /// Add an item to library
         /// </summary>
         /// <param name="libraryItem">Library item </param>
-        void Add(LibraryItem libraryItem);
+        Task Add(LibraryItem libraryItem);
 
         /// <summary>
         /// Get all items from library

ServerlessLibraryAPI/ServerlessLibrarySettings.cs

@@ -25,7 +25,6 @@ namespace ServerlessLibrary
         public static string CosmosAuthkey { get { return config(); } }
         public static string Database { get { return "serverlesslibrary"; } }
         public static string Collection { get { return "contributions"; } }
-        public static bool ApiOnly { get { return Boolean.Parse(config("false")); } }
     }
 
 }

ServerlessLibraryAPI/Startup.cs

@@ -1,12 +1,15 @@
 using Microsoft.AspNetCore.Authentication.Cookies;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.SpaServices.ReactDevelopmentServer;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
 using ServerlessLibrary.OAuth.GitHub;
 using Swashbuckle.AspNetCore.Swagger;
+using System.Threading.Tasks;
 
 namespace ServerlessLibrary
 {
@@ -62,13 +65,10 @@ namespace ServerlessLibrary
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
         public void Configure(IApplicationBuilder app, IHostingEnvironment env)
         {
-            app.UseExceptionHandler("/Error");
             app.UseHsts();
-
             app.UseDefaultFiles();
             app.UseStaticFiles();
             app.UseSpaStaticFiles();
-
             app.UseSwaggerUI(c =>
             {
                 c.SwaggerEndpoint("/swagger/v1/swagger.json", "Serverless library API v1");
@@ -84,8 +84,6 @@ namespace ServerlessLibrary
                     template: "{controller}/{action=Index}/{id?}");
             });
 
-            if (!ServerlessLibrarySettings.ApiOnly)
-            {
             app.UseSpa(spa =>
             {
                 spa.Options.SourcePath = "ClientApp";
@@ -95,7 +93,6 @@ namespace ServerlessLibrary
                     spa.UseReactDevelopmentServer(npmScript: "start");
                 }
             });
-            }
 
             app.Use(async (context, next) =>
             {

ServerlessLibraryAPI/StorageHelper.cs

@@ -52,13 +52,13 @@ namespace ServerlessLibrary
             return queue;
         }
 
-        public static async void submitContributionForApproval(string contributionPayload)
+        public static async Task submitContributionForApproval(string contributionPayload)
         {
             var message = new CloudQueueMessage(contributionPayload);
             await (await getQueueReference(slContributionRequests)).AddMessageAsync(message);
         }
 
-        public static async void updateUserStats(string statsPayload)
+        public static async Task updateUserStats(string statsPayload)
         {
             var message = new CloudQueueMessage(statsPayload);
             await (await getQueueReference(slItemTableName)).AddMessageAsync(message);