internal static void CheckArrayParameter(ref string[] param, bool checkForNull, bool checkIfEmpty, bool checkForCommas, int maxSize, string paramName)
{
if (param == null)
{
throw new ArgumentNullException(paramName);
}
if (param.Length < 1)
{
throw new ArgumentException(string.Format(CultureInfo.InstalledUICulture, "The array parameter '{0}' should not be empty.", paramName), paramName);
}
Hashtable values = new Hashtable(param.Length);
for (int i = param.Length - 1; i >= 0; i--)
{
SecUtility.CheckParameter(ref param[i], checkForNull, checkIfEmpty, checkForCommas, maxSize,
paramName + "[ " + i.ToString(CultureInfo.InvariantCulture) + " ]");
if (values.Contains(param[i]))
{
throw new ArgumentException(string.Format(CultureInfo.InstalledUICulture, "The array '{0}' should not contain duplicate values.", paramName), paramName);
}
else
{
values.Add(param[i], param[i]);
}
}
}
private SessionRow GetSession(string id, DataServiceContext context)
{
Debug.Assert(context != null);
Debug.Assert(id != null && id.Length <= Configuration.MaxStringPropertySizeInChars);
try
{
DataServiceQuery <SessionRow> queryObj = context.CreateQuery <SessionRow>(_tableName);
var query = (from session in queryObj
where session.PartitionKey == SecUtility.CombineToKey(_applicationName, id)
select session).AsTableServiceQuery();
IEnumerable <SessionRow> sessions = query.Execute();
// enumerate the result and store it in a list
List <SessionRow> sessionList = new List <SessionRow>(sessions);
if (sessionList != null && sessionList.Count() == 1)
{
return(sessionList.First());
}
else if (sessionList != null && sessionList.Count() > 1)
{
throw new ProviderException("Multiple sessions with the same name!");
}
else
{
return(null);
}
}
catch (Exception e)
{
throw new ProviderException("Error accessing storage.", e);
}
}
public override void CreateUninitializedItem(HttpContext context, string id, int timeout)
{
Debug.Assert(context != null);
SecUtility.CheckParameter(ref id, true, true, false, Configuration.MaxStringPropertySizeInChars, "id");
if (timeout < 0)
{
throw new ArgumentException("Parameter timeout must be a non-negative integer!");
}
try
{
TableServiceContext svc = CreateDataServiceContext();
SessionRow session = new SessionRow(id, _applicationName);
session.Lock = 0; // no lock
session.Initialized = false;
session.Id = id;
session.Timeout = timeout;
session.ExpiresUtc = DateTime.UtcNow.AddMinutes(timeout);
svc.AddObject(_tableName, session);
svc.SaveChangesWithRetries();
}
catch (InvalidOperationException e)
{
throw new ProviderException("Error accessing the data store.", e);
}
}
private RoleRow GetUserInRole(DataServiceContext svc, string rolename, string username)
{
SecUtility.CheckParameter(ref username, true, true, true, Constants.MaxTableUsernameLength, "username");
SecUtility.CheckParameter(ref rolename, true, true, true, MaxTableRoleNameLength, "rolename");
try
{
DataServiceQuery <RoleRow> queryObj = svc.CreateQuery <RoleRow>(_tableName);
var query = (from user in queryObj
where user.PartitionKey == SecUtility.CombineToKey(_applicationName, username) &&
user.RowKey == SecUtility.Escape(rolename)
select user).AsTableServiceQuery();
try
{
IEnumerable <RoleRow> userRows = query.Execute();
return(userRows.FirstOrDefault());
}
catch (InvalidOperationException e)
{
if (e.InnerException is DataServiceClientException && (e.InnerException as DataServiceClientException).StatusCode == (int)HttpStatusCode.NotFound)
{
return(null);
}
else
{
throw;
}
}
}
catch (Exception e)
{
throw new ProviderException("Error while accessing the data store.", e);
}
}
public override void RemoveItem(HttpContext context, string id, object lockId, SessionStateStoreData item)
{
Debug.Assert(context != null);
Debug.Assert(lockId != null);
Debug.Assert(_blobProvider != null);
SecUtility.CheckParameter(ref id, true, true, false, Configuration.MaxStringPropertySizeInChars, "id");
try
{
sqlTableServiceContext svc = CreateDataServiceContext();
SessionRow session = GetSession(id, svc);
if (session == null)
{
Debug.Assert(false);
return;
}
if (session.Lock != (int)lockId)
{
Debug.Assert(false);
return;
}
svc.DeleteObject(session);
svc.SaveChangesWithRetries();
}
catch (InvalidOperationException e)
{
throw new ProviderException("Error accessing the data store!", e);
}
// delete associated blobs
try
{
IEnumerable <sqlListBlobItem> e = _blobProvider.ListBlobs(GetBlobNamePrefix(id));
if (e == null)
{
return;
}
IEnumerator <sqlListBlobItem> props = e.GetEnumerator();
if (props == null)
{
return;
}
while (props.MoveNext())
{
if (props.Current != null)
{
if (!_blobProvider.DeleteBlob(props.Current.Uri.ToString()))
{
// ignore this; it is possible that another thread could try to delete the blob
// at the same time
}
}
}
}
catch (Exception e)
{
throw new ProviderException("Error accessing blob storage.", e);
}
}
public override SessionStateStoreData GetItem(HttpContext context, string id, out bool locked, out TimeSpan lockAge,
out object lockId, out SessionStateActions actions)
{
Debug.Assert(context != null);
SecUtility.CheckParameter(ref id, true, true, false, Configuration.MaxStringPropertySizeInChars, "id");
return(GetSession(context, id, out locked, out lockAge, out lockId, out actions, false));
}
// applicationName + userName is partitionKey
// roleName is rowKey
public RoleRow(string applicationName, string roleName, string userName)
: base()
{
SecUtility.CheckParameter(ref applicationName, true, true, true, Constants.MaxTableApplicationNameLength, "applicationName");
SecUtility.CheckParameter(ref roleName, true, true, true, TableStorageRoleProvider.MaxTableRoleNameLength, "roleName");
SecUtility.CheckParameter(ref userName, true, false, true, Constants.MaxTableUsernameLength, "userName");
ApplicationName = applicationName;
RoleName = roleName;
UserName = userName;
}
public override bool IsUserInRole(string username, string roleName)
{
SecUtility.CheckParameter(ref roleName, true, true, true, MaxTableRoleNameLength, "rolename");
SecUtility.CheckParameter(ref username, true, false, true, Constants.MaxTableUsernameLength, "username");
if (username.Length < 1)
{
return(false);
}
try
{
TableStorageDataServiceContext svc = CreateDataServiceContext();
DataServiceQuery <RoleRow> queryObj = svc.CreateQuery <RoleRow>(_tableName);
IEnumerable <RoleRow> query = from user in queryObj
where (user.PartitionKey == SecUtility.CombineToKey(_applicationName, username) ||
user.PartitionKey == SecUtility.CombineToKey(_applicationName, string.Empty)) &&
user.RowKey == SecUtility.Escape(roleName)
select user;
TableStorageDataServiceQuery <RoleRow> q = new TableStorageDataServiceQuery <RoleRow>(query as DataServiceQuery <RoleRow>, _tableRetry);
IEnumerable <RoleRow> userRows = q.ExecuteWithRetries();
if (userRows == null)
{
throw new ProviderException(string.Format(CultureInfo.InstalledUICulture, "The role {0} does not exist.", roleName));
}
List <RoleRow> l = new List <RoleRow>(userRows);
if (l.Count == 0)
{
throw new ProviderException(string.Format(CultureInfo.InstalledUICulture, "The role {0} does not exist.", roleName));
}
RoleRow row;
if (IsStaleRole(l, out row))
{
throw new ProviderException(string.Format(CultureInfo.InstalledUICulture, "The role {0} does not exist.", roleName));
}
if (l.Count > 2)
{
throw new ProviderException("User name appears twice in the same role!");
}
if (l.Count == 1)
{
Debug.Assert(string.IsNullOrEmpty(l.ElementAt(0).UserName));
return(false);
}
return(true);
}
catch (InvalidOperationException e)
{
throw new ProviderException("Error while accessing the data store.", e);
}
}
public override void ResetItemTimeout(HttpContext context, string id)
{
Debug.Assert(context != null);
SecUtility.CheckParameter(ref id, true, true, false, Configuration.MaxStringPropertySizeInChars, "id");
_providerRetry(() => {
TableServiceContext svc = CreateDataServiceContext();
SessionRow session = GetSession(id, svc);
session.ExpiresUtc = DateTime.UtcNow.AddMinutes(session.Timeout);
svc.UpdateObject(session);
svc.SaveChangesWithRetries();
});
}
// remember that there is no is no rollback functionality for the table storage service right now
// be cautious when using this function
// if a role does not exist, we stop deleting roles, if a user in a role does not exist, we continue deleting
// in case of error conditions, the behavior of this function is different than the SQL role provider
public override void RemoveUsersFromRoles(string[] usernames, string[] roleNames)
{
SecUtility.CheckArrayParameter(ref roleNames, true, true, true, MaxTableRoleNameLength, "roleNames");
SecUtility.CheckArrayParameter(ref usernames, true, true, true, Constants.MaxTableUsernameLength, "usernames");
RoleRow row;
try
{
TableStorageDataServiceContext svc = CreateDataServiceContext();
foreach (string role in roleNames)
{
if (!RoleExists(role))
{
throw new ProviderException(string.Format(CultureInfo.InstalledUICulture, "The role {0} does not exist!", role));
}
foreach (string user in usernames)
{
row = GetUserInRole(svc, role, user);
if (row == null)
{
Log.Write(EventKind.Warning, string.Format(CultureInfo.InstalledUICulture, "The user {0} does not exist in the role {1}.", user, role));
continue;
}
try
{
svc.DeleteObject(row);
svc.SaveChangesWithRetries();
}
catch (Exception e)
{
HttpStatusCode status;
if (TableStorageHelpers.EvaluateException(e, out status) && (status == HttpStatusCode.NoContent || status == HttpStatusCode.NotFound))
{
Log.Write(EventKind.Warning, string.Format(CultureInfo.InstalledUICulture, "The user {0} does not exist in the role {1}.", user, role));
svc.Detach(row);
}
else
{
throw new ProviderException(string.Format(CultureInfo.InstalledUICulture, "Error deleting user {0} from role {1}.", user, role));
}
}
}
}
}
catch (InvalidOperationException e)
{
throw new ProviderException("Error while accessing the data store.", e);
}
}
// Because of limited transactional support in the table storage offering, this function gives limited guarantees
// for inserting all users into all roles.
// We do not recommend using this function because of missing transactional support.
public override void AddUsersToRoles(string[] usernames, string[] roleNames)
{
SecUtility.CheckArrayParameter(ref roleNames, true, true, true, MaxTableRoleNameLength, "roleNames");
SecUtility.CheckArrayParameter(ref usernames, true, true, true, Constants.MaxTableUsernameLength, "usernames");
RoleRow row;
try
{
TableStorageDataServiceContext svc = CreateDataServiceContext();
foreach (string role in roleNames)
{
if (!RoleExists(role))
{
throw new ProviderException(string.Format(CultureInfo.InstalledUICulture, "The role {0} does not exist!", role));
}
foreach (string user in usernames)
{
row = new RoleRow(_applicationName, role, user);
try
{
svc.AddObject(_tableName, row);
svc.SaveChangesWithRetries();
}
catch (InvalidOperationException e)
{
HttpStatusCode status;
if (TableStorageHelpers.EvaluateException(e, out status) && status == HttpStatusCode.Conflict)
{
// this element already exists or was created in a failed retry
// this is not a fatal error; continue adding elements
Log.Write(EventKind.Warning, string.Format(CultureInfo.InstalledUICulture, "The user {0} already exists in the role {1}.", user, role));
svc.Detach(row);
}
else
{
throw new ProviderException(string.Format(CultureInfo.InstalledUICulture, "Error adding user {0} to role {1}", user, role));
}
}
}
}
}
catch (InvalidOperationException e)
{
throw new ProviderException("Error while accessing the data store.", e);
}
}
// application name + session id is partitionKey
public SessionRow(string sessionId, string applicationName)
: base()
{
SecUtility.CheckParameter(ref sessionId, true, true, true, Configuration.MaxStringPropertySizeInChars, "sessionId");
SecUtility.CheckParameter(ref applicationName, true, true, true, Constants.MaxTableApplicationNameLength, "applicationName");
PartitionKey = SecUtility.CombineToKey(applicationName, sessionId);
RowKey = string.Empty;
Id = sessionId;
ApplicationName = applicationName;
ExpiresUtc = Configuration.MinSupportedDateTime;
LockDateUtc = Configuration.MinSupportedDateTime;
CreatedUtc = Configuration.MinSupportedDateTime;
Timeout = 0;
BlobName = string.Empty;
}
public override void ReleaseItemExclusive(HttpContext context, string id, object lockId)
{
Debug.Assert(context != null);
Debug.Assert(lockId != null);
SecUtility.CheckParameter(ref id, true, true, false, Configuration.MaxStringPropertySizeInChars, "id");
try
{
TableServiceContext svc = CreateDataServiceContext();
SessionRow session = GetSession(id, svc);
ReleaseItemExclusive(svc, session, lockId);
}
catch (InvalidOperationException e)
{
throw new ProviderException("Error accessing the data store!", e);
}
}
public override string[] GetRolesForUser(string username)
{
SecUtility.CheckParameter(ref username, true, false, true, Constants.MaxTableUsernameLength, "username");
if (username.Length < 1)
{
return(new string[0]);
}
try
{
TableStorageDataServiceContext svc = CreateDataServiceContext();
DataServiceQuery <RoleRow> queryObj = svc.CreateQuery <RoleRow>(_tableName);
IEnumerable <RoleRow> query = from user in queryObj
where user.PartitionKey == SecUtility.CombineToKey(_applicationName, username) ||
user.PartitionKey == SecUtility.CombineToKey(_applicationName, string.Empty)
select user;
TableStorageDataServiceQuery <RoleRow> q = new TableStorageDataServiceQuery <RoleRow>(query as DataServiceQuery <RoleRow>, _tableRetry);
IEnumerable <RoleRow> userRows = q.ExecuteAllWithRetries();
if (userRows == null)
{
return(new string[0]);
}
List <RoleRow> l = new List <RoleRow>(userRows);
if (l.Count == 0)
{
return(new string[0]);
}
List <string> ret = new List <string>();
foreach (RoleRow user in l)
{
if (!string.IsNullOrEmpty(user.UserName) && !IsStaleRole(l, user.RoleName))
{
ret.Add(user.RoleName);
}
}
return(ret.ToArray());
}
catch (InvalidOperationException e)
{
throw new ProviderException("Error while accessing the data store.", e);
}
}
public override string[] GetUsersInRole(string roleName)
{
SecUtility.CheckParameter(ref roleName, true, true, true, MaxTableRoleNameLength, "rolename");
try
{
TableStorageDataServiceContext svc = CreateDataServiceContext();
DataServiceQuery <RoleRow> queryObj = svc.CreateQuery <RoleRow>(_tableName);
IEnumerable <RoleRow> query = from user in queryObj
where user.PartitionKey.CompareTo(SecUtility.EscapedFirst(_applicationName)) >= 0 &&
user.PartitionKey.CompareTo(SecUtility.NextComparisonString(SecUtility.EscapedFirst(_applicationName))) < 0 &&
user.RowKey == SecUtility.Escape(roleName)
select user;
TableStorageDataServiceQuery <RoleRow> q = new TableStorageDataServiceQuery <RoleRow>(query as DataServiceQuery <RoleRow>, _tableRetry);
IEnumerable <RoleRow> userRows = q.ExecuteAllWithRetries();
if (userRows == null)
{
// role does not exist; we are supposed to throw an exception here
throw new ProviderException(string.Format(CultureInfo.InstalledUICulture, "The role {0} does not exist!", roleName));
}
List <RoleRow> l = new List <RoleRow>(userRows);
if (l.Count == 0 || IsStaleRole(l, roleName))
{
throw new ProviderException(string.Format(CultureInfo.InstalledUICulture, "The role {0} does not exist!", roleName));
}
List <string> ret = new List <string>();
foreach (RoleRow user in l)
{
if (!string.IsNullOrEmpty(user.UserName))
{
ret.Add(user.UserName);
}
}
return(ret.ToArray());
}
catch (InvalidOperationException e)
{
throw new ProviderException("Error while accessing the data store.", e);
}
}
public override bool RoleExists(string roleName)
{
SecUtility.CheckParameter(ref roleName, true, true, true, MaxTableRoleNameLength, "rolename");
try
{
TableStorageDataServiceContext svc = CreateDataServiceContext();
DataServiceQuery <RoleRow> queryObj = svc.CreateQuery <RoleRow>(_tableName);
IEnumerable <RoleRow> query = from role in queryObj
where role.PartitionKey == SecUtility.CombineToKey(_applicationName, string.Empty) &&
role.RowKey == SecUtility.Escape(roleName)
select role;
TableStorageDataServiceQuery <RoleRow> q = new TableStorageDataServiceQuery <RoleRow>(query as DataServiceQuery <RoleRow>, _tableRetry);
try
{
// this query addresses exactly one result
// we thus should get an exception if there is no element
q.ExecuteWithRetries();
return(true);
}
catch (DataServiceQueryException e)
{
HttpStatusCode s;
if (TableStorageHelpers.EvaluateException(e, out s) && s == HttpStatusCode.NotFound)
{
return(false);
}
else
{
throw;
}
}
}
catch (InvalidOperationException e)
{
throw new ProviderException("Error while accessing the data store.", e);
}
}
public override string[] GetAllRoles()
{
try
{
DataServiceContext svc = CreateDataServiceContext();
DataServiceQuery <RoleRow> queryObj = svc.CreateQuery <RoleRow>(_tableName);
IEnumerable <RoleRow> query = from role in queryObj
where role.PartitionKey == SecUtility.CombineToKey(_applicationName, string.Empty)
select role;
TableStorageDataServiceQuery <RoleRow> q = new TableStorageDataServiceQuery <RoleRow>(query as DataServiceQuery <RoleRow>, _tableRetry);
IEnumerable <RoleRow> userRows = q.ExecuteAllWithRetries();
if (userRows == null)
{
return(new string[0]);
}
List <RoleRow> l = new List <RoleRow>(userRows);
if (l.Count == 0)
{
return(new string[0]);
}
List <string> ret = new List <string>();
foreach (RoleRow role in l)
{
Debug.Assert(role.UserName != null);
if (string.IsNullOrEmpty(role.UserName))
{
ret.Add(role.RoleName);
}
}
return(ret.ToArray());
}
catch (InvalidOperationException e)
{
throw new ProviderException("Error while accessing the data store.", e);
}
}
public override void CreateRole(string roleName)
{
SecUtility.CheckParameter(ref roleName, true, true, true, MaxTableRoleNameLength, "rolename");
try
{
TableServiceContext svc = CreateDataServiceContext();
RoleRow newRole = new RoleRow(_applicationName, roleName, string.Empty);
svc.AddObject(_tableName, newRole);
svc.SaveChangesWithRetries();
}
catch (InvalidOperationException e)
{
// when retry policies are used we cannot distinguish between a conflict and success
// so, in the case of a conflict, we just retrun success here
if (e.InnerException is DataServiceClientException && (e.InnerException as DataServiceClientException).StatusCode == (int)HttpStatusCode.Conflict)
{
return;
// the role already exists
}
throw new ProviderException("Error accessing role table.", e);
}
}
private RoleRow GetUserInRole(DataServiceContext svc, string rolename, string username)
{
SecUtility.CheckParameter(ref username, true, true, true, Constants.MaxTableUsernameLength, "username");
SecUtility.CheckParameter(ref rolename, true, true, true, MaxTableRoleNameLength, "rolename");
try
{
DataServiceQuery <RoleRow> queryObj = svc.CreateQuery <RoleRow>(_tableName);
IEnumerable <RoleRow> query = from user in queryObj
where user.PartitionKey == SecUtility.CombineToKey(_applicationName, username) &&
user.RowKey == SecUtility.Escape(rolename)
select user;
TableStorageDataServiceQuery <RoleRow> q = new TableStorageDataServiceQuery <RoleRow>(query as DataServiceQuery <RoleRow>, _tableRetry);
try
{
IEnumerable <RoleRow> userRows = q.ExecuteAllWithRetries();
return(userRows.First());
}
catch (DataServiceQueryException e)
{
HttpStatusCode s;
if (TableStorageHelpers.EvaluateException(e, out s) && s == HttpStatusCode.NotFound)
{
return(null);
}
else
{
throw;
}
}
}
catch (InvalidOperationException e)
{
throw new ProviderException("Error while accessing the data store.", e);
}
}
public override bool RoleExists(string roleName)
{
SecUtility.CheckParameter(ref roleName, true, true, true, MaxTableRoleNameLength, "rolename");
try
{
TableServiceContext svc = CreateDataServiceContext();
DataServiceQuery <RoleRow> queryObj = svc.CreateQuery <RoleRow>(_tableName);
var query = (from role in queryObj
where role.PartitionKey == SecUtility.CombineToKey(_applicationName, string.Empty) &&
role.RowKey == SecUtility.Escape(roleName)
select role).AsTableServiceQuery();
try
{
// this query addresses exactly one result
// we thus should get an exception if there is no element
return(query.Execute().Any());
}
catch (InvalidOperationException e)
{
if ((e.InnerException is DataServiceClientException && (e.InnerException as DataServiceClientException).StatusCode == (int)HttpStatusCode.NotFound) ||
(e.InnerException.InnerException is DataServiceClientException && (e.InnerException.InnerException as DataServiceClientException).StatusCode == (int)HttpStatusCode.NotFound))
{
return(false);
}
else
{
throw;
}
}
}
catch (InvalidOperationException e)
{
throw new ProviderException("Error while accessing the data store.", e);
}
}
public override void SetAndReleaseItemExclusive(HttpContext context, string id,
SessionStateStoreData item, object lockId, bool newItem)
{
Debug.Assert(context != null);
SecUtility.CheckParameter(ref id, true, true, false, Configuration.MaxStringPropertySizeInChars, "id");
_providerRetry(() =>
{
TableServiceContext svc = CreateDataServiceContext();
SessionRow session;
if (!newItem)
{
session = GetSession(id, svc);
if (session == null || session.Lock != (int)lockId)
{
Debug.Assert(false);
return;
}
}
else
{
session = new SessionRow(id, _applicationName);
session.Lock = 1;
session.LockDateUtc = DateTime.UtcNow;
}
session.Initialized = true;
Debug.Assert(session.Timeout >= 0);
session.Timeout = item.Timeout;
session.ExpiresUtc = DateTime.UtcNow.AddMinutes(session.Timeout);
session.Locked = false;
// yes, we always create a new blob here
session.BlobName = GetBlobNamePrefix(id) + Guid.NewGuid().ToString("N");
// Serialize the session and write the blob
byte[] items, statics;
SerializeSession(item, out items, out statics);
string serializedItems = Convert.ToBase64String(items);
string serializedStatics = Convert.ToBase64String(statics);
MemoryStream output = new MemoryStream();
StreamWriter writer = new StreamWriter(output);
try
{
writer.WriteLine(serializedItems);
writer.WriteLine(serializedStatics);
writer.Flush();
// for us, it shouldn't matter whether newItem is set to true or false
// because we always create the entire blob and cannot append to an
// existing one
_blobProvider.UploadStream(session.BlobName, output);
writer.Close();
output.Close();
}
catch (Exception e)
{
if (!newItem)
{
ReleaseItemExclusive(svc, session, lockId);
}
throw new ProviderException("Error accessing the data store.", e);
}
finally
{
if (writer != null)
{
writer.Close();
}
if (output != null)
{
output.Close();
}
}
if (newItem)
{
svc.AddObject(_tableName, session);
svc.SaveChangesWithRetries();
}
else
{
// Unlock the session and save changes
ReleaseItemExclusive(svc, session, lockId);
}
});
}
public override void Initialize(string name, NameValueCollection config)
{
// Verify that config isn't null
if (config == null)
{
throw new ArgumentNullException("config");
}
// Assign the provider a default name if it doesn't have one
if (String.IsNullOrEmpty(name))
{
name = "TableServiceSessionStateProvider";
}
// Add a default "description" attribute to config if the
// attribute doesn't exist or is empty
if (string.IsNullOrEmpty(config["description"]))
{
config.Remove("description");
config.Add("description", "Session state provider using table storage");
}
// Call the base class's Initialize method
base.Initialize(name, config);
bool allowInsecureRemoteEndpoints = Configuration.GetBooleanValue(config, "allowInsecureRemoteEndpoints", false);
// structure storage-related properties
_applicationName = Configuration.GetStringValueWithGlobalDefault(config, "applicationName",
Configuration.DefaultProviderApplicationNameConfigurationString,
Configuration.DefaultProviderApplicationName, false);
_tableName = Configuration.GetStringValueWithGlobalDefault(config, "sessionTableName",
Configuration.DefaultSessionTableNameConfigurationString,
Configuration.DefaultSessionTableName, false);
_containerName = Configuration.GetStringValueWithGlobalDefault(config, "containerName",
Configuration.DefaultSessionContainerNameConfigurationString,
Configuration.DefaultSessionContainerName, false);
if (!SecUtility.IsValidContainerName(_containerName))
{
throw new ProviderException("The provider configuration for the TableStorageSessionStateProvider does not contain a valid container name. " +
"Please refer to the documentation for the concrete rules for valid container names." +
"The current container name is: " + _containerName);
}
config.Remove("allowInsecureRemoteEndpoints");
config.Remove("containerName");
config.Remove("applicationName");
config.Remove("sessionTableName");
// Throw an exception if unrecognized attributes remain
if (config.Count > 0)
{
string attr = config.GetKey(0);
if (!String.IsNullOrEmpty(attr))
{
throw new ProviderException
("Unrecognized attribute: " + attr);
}
}
CloudStorageAccount account = null;
try
{
account = Configuration.GetStorageAccount(Configuration.DefaultStorageConfigurationString);
SecUtility.CheckAllowInsecureEndpoints(allowInsecureRemoteEndpoints, account.Credentials, account.TableEndpoint);
SecUtility.CheckAllowInsecureEndpoints(allowInsecureRemoteEndpoints, account.Credentials, account.BlobEndpoint);
_tableStorage = account.CreateCloudTableClient();
_tableStorage.RetryPolicy = _tableRetry;
lock (thisLock)
{
_tableStorage.CreateTableIfNotExist <SessionRow>(_tableName);
}
_blobProvider = new BlobProvider(account.Credentials, account.BlobEndpoint, _containerName);
}
catch (SecurityException)
{
throw;
}
// catch InvalidOperationException as well as StorageException
catch (Exception e)
{
string exceptionDescription = Configuration.GetInitExceptionDescription(account.Credentials, account.TableEndpoint, account.BlobEndpoint);
string tableName = (_tableName == null) ? "no session table name specified" : _tableName;
string containerName = (_containerName == null) ? "no container name specified" : _containerName;
Log.Write(EventKind.Error, "Initialization of data service structures (tables and/or blobs) failed!" +
exceptionDescription + Environment.NewLine +
"Configured blob container: " + containerName + Environment.NewLine +
"Configured table name: " + tableName + Environment.NewLine +
e.Message + Environment.NewLine + e.StackTrace);
throw new ProviderException("Initialization of data service structures (tables and/or blobs) failed!" +
"The most probable reason for this is that " +
"the storage endpoints are not configured correctly. Please look at the configuration settings " +
"in your .cscfg and Web.config files. More information about this error " +
"can be found in the logs when running inside the hosting environment or in the output " +
"window of Visual Studio.", e);
}
Debug.Assert(_blobProvider != null);
}
// RoleProvider methods
public override void Initialize(string name, NameValueCollection config)
{
// Verify that config isn't null
if (config == null)
{
throw new ArgumentNullException("config");
}
// Assign the provider a default name if it doesn't have one
if (String.IsNullOrEmpty(name))
{
name = "TableStorageRoleProvider";
}
// Add a default "description" attribute to config if the
// attribute doesn't exist or is empty
if (string.IsNullOrEmpty(config["description"]))
{
config.Remove("description");
config.Add("description", "Table storage-based role provider");
}
// Call the base class's Initialize method
base.Initialize(name, config);
bool allowInsecureRemoteEndpoints = Configuration.GetBooleanValue(config, "allowInsecureRemoteEndpoints", false);
// structure storage-related properties
ApplicationName = Configuration.GetStringValueWithGlobalDefault(config, "applicationName",
Configuration.DefaultProviderApplicationNameConfigurationString,
Configuration.DefaultProviderApplicationName, false);
_accountName = Configuration.GetStringValue(config, "accountName", null, true);
_sharedKey = Configuration.GetStringValue(config, "sharedKey", null, true);
_tableName = Configuration.GetStringValueWithGlobalDefault(config, "roleTableName",
Configuration.DefaultRoleTableNameConfigurationString,
Configuration.DefaultRoleTableName, false);
_membershipTableName = Configuration.GetStringValueWithGlobalDefault(config, "membershipTableName",
Configuration.DefaultMembershipTableNameConfigurationString,
Configuration.DefaultMembershipTableName, false);
_tableServiceBaseUri = Configuration.GetStringValue(config, "tableServiceBaseUri", null, true);
// remove required attributes
config.Remove("allowInsecureRemoteEndpoints");
config.Remove("applicationName");
config.Remove("accountName");
config.Remove("sharedKey");
config.Remove("roleTableName");
config.Remove("membershipTableName");
config.Remove("tableServiceBaseUri");
// Throw an exception if unrecognized attributes remain
if (config.Count > 0)
{
string attr = config.GetKey(0);
if (!String.IsNullOrEmpty(attr))
{
throw new ProviderException(string.Format(CultureInfo.InstalledUICulture, "Unrecognized attribute: {0}", attr));
}
}
StorageAccountInfo info = null;
try
{
info = StorageAccountInfo.GetDefaultTableStorageAccountFromConfiguration(true);
if (_tableServiceBaseUri != null)
{
info.BaseUri = new Uri(_tableServiceBaseUri);
}
if (_accountName != null)
{
info.AccountName = _accountName;
}
if (_sharedKey != null)
{
info.Base64Key = _sharedKey;
}
info.CheckComplete();
SecUtility.CheckAllowInsecureEndpoints(allowInsecureRemoteEndpoints, info);
_tableStorage = TableStorage.Create(info);
_tableStorage.RetryPolicy = _tableRetry;
_tableStorage.TryCreateTable(_tableName);
}
catch (SecurityException)
{
throw;
}
// catch InvalidOperationException as well as StorageException
catch (Exception e)
{
string exceptionDescription = Configuration.GetInitExceptionDescription(info, "table storage configuration");
string tableName = (_tableName == null) ? "no role table name specified" : _tableName;
Log.Write(EventKind.Error, "Could not create or find role table: " + tableName + "!" + Environment.NewLine +
exceptionDescription + Environment.NewLine +
e.Message + Environment.NewLine + e.StackTrace);
throw new ProviderException("Could not create or find role table. The most probable reason for this is that " +
"the storage endpoints are not configured correctly. Please look at the configuration settings " +
"in your .cscfg and Web.config files. More information about this error " +
"can be found in the logs when running inside the hosting environment or in the output " +
"window of Visual Studio.", e);
}
}
public override void Initialize(string name, NameValueCollection config)
{
// Verify that config isn't null
if (config == null)
{
throw new ArgumentNullException("config");
}
// Assign the provider a default name if it doesn't have one
if (String.IsNullOrEmpty(name))
{
name = "TableServiceSessionStateProvider";
}
// Add a default "description" attribute to config if the
// attribute doesn't exist or is empty
if (string.IsNullOrEmpty(config["description"]))
{
config.Remove("description");
config.Add("description", "Session state provider using table storage");
}
// Call the base class's Initialize method
base.Initialize(name, config);
bool allowInsecureRemoteEndpoints = Configuration.GetBooleanValue(config, "allowInsecureRemoteEndpoints", false);
// structure storage-related properties
_applicationName = Configuration.GetStringValueWithGlobalDefault(config, "applicationName",
Configuration.DefaultProviderApplicationNameConfigurationString,
Configuration.DefaultProviderApplicationName, false);
_accountName = Configuration.GetStringValue(config, "accountName", null, true);
_sharedKey = Configuration.GetStringValue(config, "sharedKey", null, true);
_tableName = Configuration.GetStringValueWithGlobalDefault(config, "sessionTableName",
Configuration.DefaultSessionTableNameConfigurationString,
Configuration.DefaultSessionTableName, false);
_tableServiceBaseUri = Configuration.GetStringValue(config, "tableServiceBaseUri", null, true);
_containerName = Configuration.GetStringValueWithGlobalDefault(config, "containerName",
Configuration.DefaultSessionContainerNameConfigurationString,
Configuration.DefaultSessionContainerName, false);
if (!SecUtility.IsValidContainerName(_containerName))
{
throw new ProviderException("The provider configuration for the TableStorageSessionStateProvider does not contain a valid container name. " +
"Please refer to the documentation for the concrete rules for valid container names." +
"The current container name is: " + _containerName);
}
_blobServiceBaseUri = Configuration.GetStringValue(config, "blobServiceBaseUri", null, true);
config.Remove("allowInsecureRemoteEndpoints");
config.Remove("accountName");
config.Remove("sharedKey");
config.Remove("containerName");
config.Remove("applicationName");
config.Remove("blobServiceBaseUri");
config.Remove("tableServiceBaseUri");
config.Remove("sessionTableName");
// Throw an exception if unrecognized attributes remain
if (config.Count > 0)
{
string attr = config.GetKey(0);
if (!String.IsNullOrEmpty(attr))
{
throw new ProviderException
("Unrecognized attribute: " + attr);
}
}
//StorageCredentialsAccountAndKey tableInfo = null;
//StorageCredentialsAccountAndKey blobInfo = null;
string tableBaseUri = null;
string blobBaseUri = null;
try
{
var sharedKey = Configuration.TryGetAppSetting(Configuration.DefaultAccountSharedKeyConfigurationString);
var accountName = Configuration.TryGetAppSetting(Configuration.DefaultAccountNameConfigurationString);
tableBaseUri = Configuration.TryGetAppSetting(Configuration.DefaultTableStorageEndpointConfigurationString);
blobBaseUri = Configuration.TryGetAppSetting(Configuration.DefaultBlobStorageEndpointConfigurationString);
if (_tableServiceBaseUri != null)
{
tableBaseUri = _tableServiceBaseUri;
}
if (_blobServiceBaseUri != null)
{
blobBaseUri = _blobServiceBaseUri;
}
if (_accountName != null)
{
accountName = _accountName;
}
if (_sharedKey != null)
{
sharedKey = _sharedKey;
}
if (String.IsNullOrEmpty(sharedKey) || String.IsNullOrEmpty(accountName) || String.IsNullOrEmpty(tableBaseUri) || String.IsNullOrEmpty(blobBaseUri))
{
throw new ConfigurationErrorsException("Account information incomplete!");
}
//tableInfo = new StorageCredentialsAccountAndKey(accountName, sharedKey);
//blobInfo = new StorageCredentialsAccountAndKey(accountName, sharedKey);
//SecUtility.CheckAllowInsecureEndpoints(allowInsecureRemoteEndpoints, tableInfo, new Uri(tableBaseUri));
//SecUtility.CheckAllowInsecureEndpoints(allowInsecureRemoteEndpoints, blobInfo, new Uri(blobBaseUri));
_tableStorage = new sqlTableClient(tableBaseUri);//, tableInfo);
//_tableStorage.RetryPolicy = _tableRetry;
if (_tableStorage.CreateTableIfNotExist(_tableName))
{
var ctx = _tableStorage.GetDataServiceContext();
var dummyRow = new SessionRow("fake", "dummy");
ctx.AddObject(_tableName, dummyRow);
ctx.SaveChangesWithRetries();
ctx.DeleteObject(dummyRow);
ctx.SaveChangesWithRetries();
}
//_blobProvider = new BlobProvider(blobInfo, new Uri(blobBaseUri), _containerName);
_blobProvider = new BlobProvider(new Uri(blobBaseUri), _containerName);
}
catch (SecurityException)
{
throw;
}
// catch InvalidOperationException as well as StorageException
catch (Exception e)
{
//string exceptionDescription = Configuration.GetInitExceptionDescription(tableInfo, new Uri(tableBaseUri), blobInfo, new Uri(blobBaseUri));
string exceptionDescription = Configuration.GetInitExceptionDescription(new Uri(tableBaseUri), new Uri(blobBaseUri));
string tableName = (_tableName == null) ? "no session table name specified" : _tableName;
string containerName = (_containerName == null) ? "no container name specified" : _containerName;
Log.Write(EventKind.Error, "Initialization of data service structures (tables and/or blobs) failed!" +
exceptionDescription + Environment.NewLine +
"Configured blob container: " + containerName + Environment.NewLine +
"Configured table name: " + tableName + Environment.NewLine +
e.Message + Environment.NewLine + e.StackTrace);
throw new ProviderException("Initialization of data service structures (tables and/or blobs) failed!" +
"The most probable reason for this is that " +
"the storage endpoints are not configured correctly. Please look at the configuration settings " +
"in your .cscfg and Web.config files. More information about this error " +
"can be found in the logs when running inside the hosting environment or in the output " +
"window of Visual Studio.", e);
}
Debug.Assert(_blobProvider != null);
}
// the username to match can be in a format that varies between providers
// for this implementation, a syntax similar to the one used in the SQL provider is applied
// "user%" will return all users in a role that start with the string "user"
// the % sign can only appear at the end of the usernameToMatch parameter
// because the current version of the table storage service does not support StartsWith in LINQ queries,
// calling this function can cause significant network trafic when '%' is used in the usernameToMach
// parameter
public override string[] FindUsersInRole(string roleName, string usernameToMatch)
{
SecUtility.CheckParameter(ref roleName, true, true, true, MaxTableRoleNameLength, "rolename");
SecUtility.CheckParameter(ref usernameToMatch, true, true, false, Constants.MaxTableUsernameLength, "usernameToMatch");
bool startswith = false;
if (usernameToMatch.Contains('%'))
{
if (usernameToMatch.IndexOf('%') != usernameToMatch.Length - 1)
{
throw new ArgumentException("The TableStorageRoleProvider only supports search strings that contain '%' as the last character!");
}
usernameToMatch = usernameToMatch.Substring(0, usernameToMatch.Length - 1);
startswith = true;
}
try
{
TableStorageDataServiceContext svc = CreateDataServiceContext();
DataServiceQuery <RoleRow> queryObj = svc.CreateQuery <RoleRow>(_tableName);
IEnumerable <RoleRow> query;
if (startswith && string.IsNullOrEmpty(usernameToMatch))
{
// get all users in the role
query = from userRole in queryObj
where userRole.PartitionKey.CompareTo(SecUtility.EscapedFirst(_applicationName)) >= 0 &&
userRole.PartitionKey.CompareTo(SecUtility.NextComparisonString(SecUtility.EscapedFirst(_applicationName))) < 0 &&
userRole.RowKey == SecUtility.Escape(roleName)
select userRole;
}
else if (startswith)
{
// get all users in the role that start with the specified string (we cannot restrict the query more because StartsWith is not supported)
// we cannot include the username to search for in the key, because the key might e escaped
query = from userRole in queryObj
where userRole.PartitionKey.CompareTo(SecUtility.EscapedFirst(_applicationName)) >= 0 &&
userRole.PartitionKey.CompareTo(SecUtility.NextComparisonString(SecUtility.EscapedFirst(_applicationName))) < 0 &&
userRole.RowKey == SecUtility.Escape(roleName) &&
(userRole.UserName.CompareTo(usernameToMatch) >= 0 || userRole.UserName == string.Empty)
select userRole;
}
else
{
// get a specific user
query = from userRole in queryObj
where (userRole.PartitionKey == SecUtility.CombineToKey(_applicationName, usernameToMatch) ||
userRole.PartitionKey == SecUtility.CombineToKey(_applicationName, string.Empty)) &&
userRole.RowKey == SecUtility.Escape(roleName)
select userRole;
}
TableStorageDataServiceQuery <RoleRow> q = new TableStorageDataServiceQuery <RoleRow>(query as DataServiceQuery <RoleRow>, _tableRetry);
IEnumerable <RoleRow> userRows = q.ExecuteAllWithRetries();
if (userRows == null)
{
throw new ProviderException("The role does not exist!");
}
List <RoleRow> l = new List <RoleRow>(userRows);
if (l.Count == 0)
{
// the role does not exist
throw new ProviderException("The role does not exist!");
}
RoleRow role;
if (IsStaleRole(l, out role))
{
throw new ProviderException("The role does not exist!");
}
List <string> ret = new List <string>();
foreach (RoleRow row in l)
{
if (row != role)
{
if (startswith && !string.IsNullOrEmpty(usernameToMatch) && !row.UserName.StartsWith(usernameToMatch, StringComparison.Ordinal))
{
continue;
}
ret.Add(row.UserName);
}
}
return(ret.ToArray());
}
catch (InvalidOperationException e)
{
throw new ProviderException("Error while accessing the data store.", e);
}
}
// we don't use the retry policy itself in this function because out parameters are not well handled by
// retry policies
private SessionStateStoreData GetSession(HttpContext context, string id, out bool locked, out TimeSpan lockAge,
out object lockId, out SessionStateActions actions,
bool exclusive)
{
Debug.Assert(context != null);
SecUtility.CheckParameter(ref id, true, true, false, Configuration.MaxStringPropertySizeInChars, "id");
SessionRow session = null;
int curRetry = 0;
bool retry = false;
// Assign default values to out parameters
locked = false;
lockId = null;
lockAge = TimeSpan.Zero;
actions = SessionStateActions.None;
do
{
retry = false;
try
{
TableServiceContext svc = CreateDataServiceContext();
session = GetSession(id, svc);
// Assign default values to out parameters
locked = false;
lockId = null;
lockAge = TimeSpan.Zero;
actions = SessionStateActions.None;
// if the blob does not exist, we return null
// ASP.NET will call the corresponding method for creating the session
if (session == null)
{
return(null);
}
if (session.Initialized == false)
{
Debug.Assert(session.Locked == false);
actions = SessionStateActions.InitializeItem;
session.Initialized = true;
}
session.ExpiresUtc = DateTime.UtcNow.AddMinutes(session.Timeout);
if (exclusive)
{
if (!session.Locked)
{
if (session.Lock == Int32.MaxValue)
{
session.Lock = 0;
}
else
{
session.Lock++;
}
session.LockDateUtc = DateTime.UtcNow;
}
lockId = session.Lock;
locked = session.Locked;
session.Locked = true;
}
lockAge = DateTime.UtcNow.Subtract(session.LockDateUtc);
lockId = session.Lock;
if (locked == true)
{
return(null);
}
// let's try to write this back to the data store
// in between, someone else could have written something to the store for the same session
// we retry a number of times; if all fails, we throw an exception
svc.UpdateObject(session);
svc.SaveChangesWithRetries();
}
catch (InvalidOperationException e)
{
// precondition fails indicates problems with the status code
if (e.InnerException is DataServiceClientException && (e.InnerException as DataServiceClientException).StatusCode == (int)HttpStatusCode.PreconditionFailed)
{
retry = true;
}
else
{
throw new ProviderException("Error accessing the data store.", e);
}
}
} while (retry && curRetry++ < NumRetries);
// ok, now we have successfully written back our state
// we can now read the blob
// note that we do not need to care about read/write locking when accessing the
// blob because each time we write a new session we create a new blob with a different name
SessionStateStoreData result = null;
MemoryStream stream = null;
StreamReader reader = null;
BlobProperties properties;
try
{
try
{
stream = _blobProvider.GetBlobContent(session.BlobName, out properties);
}
catch (Exception e)
{
throw new ProviderException("Couldn't read session blob!", e);
}
reader = new StreamReader(stream);
if (actions == SessionStateActions.InitializeItem)
{
// Return an empty SessionStateStoreData
result = new SessionStateStoreData(new SessionStateItemCollection(),
SessionStateUtility.GetSessionStaticObjects(context), session.Timeout);
}
else
{
// Read Items, StaticObjects, and Timeout from the file
byte[] items = Convert.FromBase64String(reader.ReadLine());
byte[] statics = Convert.FromBase64String(reader.ReadLine());
int timeout = session.Timeout;
// Deserialize the session
result = DeserializeSession(items, statics, timeout);
}
}
finally
{
if (stream != null)
{
stream.Close();
}
if (reader != null)
{
reader.Close();
}
}
return(result);
}
public override bool DeleteRole(string roleName, bool throwOnPopulatedRole)
{
SecUtility.CheckParameter(ref roleName, true, true, true, MaxTableRoleNameLength, "rolename");
try
{
TableStorageDataServiceContext svc = CreateDataServiceContext();
DataServiceQuery <RoleRow> queryObj = svc.CreateQuery <RoleRow>(_tableName);
IEnumerable <RoleRow> query = from userRole in queryObj
where userRole.PartitionKey.CompareTo(SecUtility.EscapedFirst(_applicationName)) >= 0 &&
userRole.PartitionKey.CompareTo(SecUtility.NextComparisonString(SecUtility.EscapedFirst(_applicationName))) < 0 &&
userRole.RowKey == SecUtility.Escape(roleName)
select userRole;
TableStorageDataServiceQuery <RoleRow> q = new TableStorageDataServiceQuery <RoleRow>(query as DataServiceQuery <RoleRow>, _tableRetry);
IEnumerable <RoleRow> userRows = q.ExecuteAllWithRetries();
if (userRows == null)
{
return(false);
}
List <RoleRow> l = new List <RoleRow>(userRows);
if (l.Count == 0)
{
// the role does not exist
return(false);
}
RoleRow role;
if (IsStaleRole(l, out role))
{
return(false);
}
if (l.Count > 1 && throwOnPopulatedRole)
{
throw new ProviderException("Cannot delete populated role.");
}
svc.DeleteObject(role);
svc.SaveChangesWithRetries();
// lets try to remove all remaining elements in the role
foreach (RoleRow row in l)
{
if (row != role)
{
try
{
svc.DeleteObject(row);
svc.SaveChangesWithRetries();
}
catch (InvalidOperationException ex)
{
HttpStatusCode status;
if (TableStorageHelpers.EvaluateException(ex, out status) && (status == HttpStatusCode.NoContent || status == HttpStatusCode.NotFound))
{
// this element already was already deleted by another process or during a failed retry
// this is not a fatal error; continue deleting elements
Log.Write(EventKind.Warning, string.Format(CultureInfo.InstalledUICulture, "The user {0} does not exist in the role {1}.", row.UserName, row.RoleName));
}
else
{
throw new ProviderException(string.Format(CultureInfo.InstalledUICulture, "Error deleting user {0} from role {1}.", row.UserName, row.RoleName));
}
}
}
}
return(true);
}
catch (InvalidOperationException e)
{
throw new ProviderException("Error while accessing the data store.", e);
}
}
// RoleProvider methods
public override void Initialize(string name, NameValueCollection config)
{
// Verify that config isn't null
if (config == null)
{
throw new ArgumentNullException("config");
}
// Assign the provider a default name if it doesn't have one
if (String.IsNullOrEmpty(name))
{
name = "TableStorageRoleProvider";
}
// Add a default "description" attribute to config if the
// attribute doesn't exist or is empty
if (string.IsNullOrEmpty(config["description"]))
{
config.Remove("description");
config.Add("description", "Table storage-based role provider");
}
// Call the base class's Initialize method
base.Initialize(name, config);
bool allowInsecureRemoteEndpoints = Configuration.GetBooleanValue(config, "allowInsecureRemoteEndpoints", false);
// structure storage-related properties
ApplicationName = Configuration.GetStringValueWithGlobalDefault(config, "applicationName",
Configuration.DefaultProviderApplicationNameConfigurationString,
Configuration.DefaultProviderApplicationName, false);
_account =
CloudStorageAccount.Parse(
RoleEnvironment.GetConfigurationSettingValue(Configuration.ConfigurationStorageConnectionStringName));
_tableName = Configuration.GetStringValueWithGlobalDefault(config, "roleTableName",
Configuration.DefaultRoleTableNameConfigurationString,
Configuration.DefaultRoleTableName, false);
Configuration.GetStringValueWithGlobalDefault(config, "membershipTableName",
Configuration.DefaultMembershipTableNameConfigurationString,
Configuration.DefaultMembershipTableName, false);
Configuration.GetStringValue(config, "tableServiceBaseUri", null, true);
// remove required attributes
config.Remove("allowInsecureRemoteEndpoints");
config.Remove("applicationName");
config.Remove("roleTableName");
config.Remove("membershipTableName");
// Throw an exception if unrecognized attributes remain
if (config.Count > 0)
{
string attr = config.GetKey(0);
if (!String.IsNullOrEmpty(attr))
{
throw new ProviderException(string.Format(CultureInfo.InstalledUICulture, "Unrecognized attribute: {0}", attr));
}
}
if (_account == null)
{
throw new ConfigurationErrorsException("Account information incomplete!");
}
_tableStorage = _account.CreateCloudTableClient();
try
{
_tableStorage.RetryPolicy = _tableRetry;
SecUtility.CheckAllowInsecureEndpoints(allowInsecureRemoteEndpoints, _tableStorage.BaseUri);
if (_tableStorage.CreateTableIfNotExist(_tableName))
{
var ctx = _tableStorage.GetDataServiceContext();
var dummyRow = new RoleRow("dummy", "fake", "none");
ctx.AddObject(_tableName, dummyRow);
ctx.SaveChangesWithRetries();
ctx.DeleteObject(dummyRow);
ctx.SaveChangesWithRetries();
}
}
catch (SecurityException)
{
throw;
}
// catch InvalidOperationException as well as StorageException
catch (Exception e)
{
string exceptionDescription = Configuration.GetInitExceptionDescription(_tableStorage.Credentials as StorageCredentialsAccountAndKey, _tableStorage.BaseUri, "table storage configuration");
string tableName = _tableName ?? "no role table name specified";
Log.Write(EventKind.Error, "Could not create or find role table: " + tableName + "!" + Environment.NewLine +
exceptionDescription + Environment.NewLine +
e.Message + Environment.NewLine + e.StackTrace);
throw new ProviderException("Could not create or find role table. The most probable reason for this is that " +
"the storage endpoints are not configured correctly. Please look at the configuration settings " +
"in your .cscfg and Web.config files. More information about this error " +
"can be found in the logs when running inside the hosting environment or in the output " +
"window of Visual Studio.", e);
}
}
