added handler to fetch credentials (#656)

* added handler to fetch credentials

* added credentials to security service rather than agent service

src/Microsoft.SqlTools.ServiceLayer/Agent/AgentService.cs

@@ -122,6 +122,7 @@ namespace Microsoft.SqlTools.ServiceLayer.Agent
             this.ServiceHost.SetRequestHandler(CreateAgentScheduleRequest.Type, HandleCreateAgentScheduleRequest);
             this.ServiceHost.SetRequestHandler(UpdateAgentScheduleRequest.Type, HandleUpdateAgentScheduleRequest);
             this.ServiceHost.SetRequestHandler(DeleteAgentScheduleRequest.Type, HandleDeleteAgentScheduleRequest);
+
         }
 
         #region "Jobs Handlers"

src/Microsoft.SqlTools.ServiceLayer/Security/Contracts/CredentialInfo.cs

@@ -14,11 +14,11 @@ namespace Microsoft.SqlTools.ServiceLayer.Security.Contracts
     /// </summary>
     public class CredentialInfo
     {
-        public int Id { get; }
+        public int Id { get; set; }
         public string Identity { get; set; }
         public string Name { get; set; }
-        public DateTime DateLastModified { get; }
+        public DateTime DateLastModified { get; set; }
-        public DateTime CreateDate { get; }
+        public DateTime CreateDate { get; set; }
         public string ProviderName { get; set; }       
     }
 }

src/Microsoft.SqlTools.ServiceLayer/Security/Contracts/CredentialRequest.cs

@@ -9,6 +9,32 @@ using Microsoft.SqlTools.Utility;
 
 namespace Microsoft.SqlTools.ServiceLayer.Security.Contracts
 {
+    /// <summary>
+    /// Get Credential parameters
+    /// </summary>
+    public class GetCredentialsParams: GeneralRequestDetails
+    {
+        public string OwnerUri { get; set; }
+    }
+
+    public class GetCredentialsResult: ResultStatus
+    {
+        public CredentialInfo[] Credentials { get; set; }
+    }
+
+    /// <summary>
+    /// SQL Agent Credentials request type
+    /// </summary>
+    public class GetCredentialsRequest
+    {
+        /// <summary>
+        /// Request definition
+        /// </summary>
+        public static readonly
+            RequestType<GetCredentialsParams, GetCredentialsResult> Type =
+            RequestType<GetCredentialsParams, GetCredentialsResult>.Create("security/credentials");
+    }
+
     /// <summary>
     /// Create Credential parameters
     /// </summary>

src/Microsoft.SqlTools.ServiceLayer/Security/SecurityService.cs

@@ -82,6 +82,7 @@ namespace Microsoft.SqlTools.ServiceLayer.Security
             this.ServiceHost.SetRequestHandler(CreateCredentialRequest.Type, HandleCreateCredentialRequest);
             this.ServiceHost.SetRequestHandler(UpdateCredentialRequest.Type, HandleUpdateCredentialRequest);
             this.ServiceHost.SetRequestHandler(DeleteCredentialRequest.Type, HandleDeleteCredentialRequest);
+            this.ServiceHost.SetRequestHandler(GetCredentialsRequest.Type, HandleGetCredentialsRequest);
         }
 
         /// <summary>
@@ -137,6 +138,49 @@ namespace Microsoft.SqlTools.ServiceLayer.Security
             });
         }
 
+        
+        /// <summary>
+        /// Handle request to get all credentials
+        /// </summary>
+        internal async Task HandleGetCredentialsRequest(GetCredentialsParams parameters, RequestContext<GetCredentialsResult> requestContext)
+        {
+            await Task.Run(async () =>
+            {
+                var result = new GetCredentialsResult();
+                try
+                {
+                    ConnectionInfo connInfo;
+                    ConnectionServiceInstance.TryFindConnection(parameters.OwnerUri, out connInfo);
+                    CDataContainer dataContainer = CDataContainer.CreateDataContainer(connInfo, databaseExists: true);
+                    
+                    var credentials = dataContainer.Server.Credentials;
+                    int credentialsCount = credentials.Count;
+                    CredentialInfo[] credentialsInfos = new CredentialInfo[credentialsCount];
+                    for (int i = 0; i < credentialsCount; ++i)
+                    {
+                        credentialsInfos[i] = new CredentialInfo();
+                        credentialsInfos[i].Name = credentials[i].Name;
+                        credentialsInfos[i].Identity = credentials[i].Identity;
+                        credentialsInfos[i].Id = credentials[i].ID;
+                        credentialsInfos[i].DateLastModified = credentials[i].DateLastModified;
+                        credentialsInfos[i].CreateDate = credentials[i].CreateDate;
+                        credentialsInfos[i].ProviderName = credentials[i].ProviderName;
+                    }
+                    result.Credentials = credentialsInfos;
+                    result.Success = true;  
+                }
+                catch (Exception ex)
+                {
+                    result.Success = false;
+                    result.ErrorMessage = ex.ToString();
+                }
+
+                await requestContext.SendResult(result);
+            });
+        }
+
+
+
         /// <summary>
         /// Disposes the service
         /// </summary>