Add delete API

Giants.Services/Services/IServerRegistryService.cs

@@ -1,13 +1,12 @@
 namespace Giants.Services
 {
-    using System;
     using System.Collections.Generic;
-    using System.Net;
-    using System.Text;
     using System.Threading.Tasks;
 
     public interface IServerRegistryService
     {
+        Task DeleteServer(string ipAddress);
+
         Task<IEnumerable<ServerInfo>> GetAllServers();
 
         Task AddServer(ServerInfo server);

Giants.Services/Services/ServerRegistryService.cs

@@ -85,6 +85,18 @@
             return serverInfo.Values;
         }
 
+        public async Task DeleteServer(string ipAddress)
+        {
+            ArgumentUtility.CheckStringForNullOrEmpty(ipAddress, nameof(ipAddress));
+
+            ServerInfo serverInfo = await this.registryStore.GetServerInfo(ipAddress);
+
+            if (serverInfo != null)
+            {
+                await this.registryStore.DeleteServer(serverInfo.id);
+            }
+        }
+
         private async Task<ConcurrentDictionary<string, ServerInfo>> PopulateCache(ICacheEntry entry)
         {
             entry.AbsoluteExpirationRelativeToNow = TimeSpan.FromMinutes(1);

Giants.Services/Store/CosmosDbServerRegistryStore.cs

@@ -58,6 +58,11 @@
                 partitionKey: new PartitionKey(serverInfo.DocumentType));
         }
 
+        public async Task DeleteServer(string id, string partitionKey = null)
+        {
+            await this.client.DeleteItem<ServerInfo>(id, partitionKey);
+        }
+
         public async Task DeleteServers(IEnumerable<string> ids, string partitionKey = null)
         {
             ArgumentUtility.CheckEnumerableForNullOrEmpty(ids, nameof(ids));

Giants.Services/Store/IServerRegistryStore.cs

@@ -9,6 +9,12 @@
     {
         Task Initialize();
 
+        Task DeleteServer(string id, string partitionKey = null);
+
+        Task DeleteServers(IEnumerable<string> ids, string partitionKey = null);
+
+        Task<ServerInfo> GetServerInfo(string ipAddress);
+
         Task<IEnumerable<ServerInfo>> GetServerInfos(Expression<Func<ServerInfo, bool>> whereExpression = null, string partitionKey = null);
 
         Task<IEnumerable<TSelect>> GetServerInfos<TSelect>(
@@ -16,10 +22,6 @@
             Expression<Func<ServerInfo, bool>> whereExpression = null,
             string partitionKey = null);
 
-        Task<ServerInfo> GetServerInfo(string ipAddress);
-
         Task UpsertServerInfo(ServerInfo serverInfo);
-
-        Task DeleteServers(IEnumerable<string> ids, string partitionKey = null);
     }
 }

Giants.Services/Store/InMemoryServerRegistryStore.cs

@@ -38,12 +38,26 @@
 
         public Task<IEnumerable<ServerInfo>> GetServerInfos(Expression<Func<ServerInfo, bool>> whereExpression = null, string partitionKey = null)
         {
-            throw new NotImplementedException();
+            IQueryable<ServerInfo> serverInfoQuery = this.servers.Values.AsQueryable();
+
+            if (whereExpression != null)
+            {
+                serverInfoQuery = serverInfoQuery.Where(whereExpression);
+            }
+
+            return Task.FromResult(serverInfoQuery.AsEnumerable());
         }
 
         public Task<IEnumerable<TSelect>> GetServerInfos<TSelect>(Expression<Func<ServerInfo, TSelect>> selectExpression, Expression<Func<ServerInfo, bool>> whereExpression = null, string partitionKey = null)
         {
-            throw new NotImplementedException();
+            IQueryable<ServerInfo> serverInfoQuery = this.servers.Values.AsQueryable();
+
+            if (whereExpression != null)
+            {
+                serverInfoQuery = serverInfoQuery.Where(whereExpression);
+            }
+
+            return Task.FromResult(serverInfoQuery.Select(selectExpression).AsEnumerable());
         }
 
         public Task DeleteServers(IEnumerable<string> ids, string partitionKey = null)
@@ -55,5 +69,12 @@
 
             return Task.CompletedTask;
         }
+
+        public Task DeleteServer(string id, string partitionKey = null)
+        {
+            this.servers.TryRemove(id, out ServerInfo _);
+
+            return Task.CompletedTask;
+        }
     }
 }

Giants.WebApi/Controllers/ServersController.cs

@@ -33,6 +33,16 @@ namespace Giants.Web.Controllers
             this.serverRegistryService = serverRegistryService;
         }
 
+        [HttpDelete]
+        public async Task DeleteServer()
+        {
+            string requestIpAddress = this.GetRequestIpAddress();
+
+            this.logger.LogInformation("Deleting server from {IPAddress}", requestIpAddress);
+
+            await this.serverRegistryService.DeleteServer(requestIpAddress);
+        }
+
         [HttpGet]
         public async Task<IEnumerable<DataContract.ServerInfoWithHostAddress>> GetServers()
         {