public override bool Equals(object obj)
{
SqlConnectionPoolKey key = obj as SqlConnectionPoolKey;
return(key != null &&
ConnectionString == key.ConnectionString);
}
internal static SqlConnectionString FindSqlConnectionOptions(SqlConnectionPoolKey key)
{
SqlConnectionString connectionOptions = (SqlConnectionString)SingletonInstance.FindConnectionOptions(key);
if (null == connectionOptions)
{
connectionOptions = new SqlConnectionString(key.ConnectionString);
}
if (connectionOptions.IsEmpty)
{
throw ADP.NoConnectionString();
}
return(connectionOptions);
}
internal static SqlConnectionString FindSqlConnectionOptions(SqlConnectionPoolKey key) {
SqlConnectionString connectionOptions = (SqlConnectionString )SingletonInstance.FindConnectionOptions(key);
if (null == connectionOptions) {
connectionOptions = new SqlConnectionString(key.ConnectionString);
}
if (connectionOptions.IsEmpty) {
throw ADP.NoConnectionString();
}
return connectionOptions;
}
protected override DbConnectionInternal CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)
{
SqlConnectionString opt = (SqlConnectionString)options;
SqlConnectionPoolKey key = (SqlConnectionPoolKey)poolKey;
SqlInternalConnection result = null;
SessionData recoverySessionData = null;
SqlConnection sqlOwningConnection = (SqlConnection)owningConnection;
bool applyTransientFaultHandling = sqlOwningConnection != null ? sqlOwningConnection._applyTransientFaultHandling : false;
SqlConnectionString userOpt = null;
if (userOptions != null)
{
userOpt = (SqlConnectionString)userOptions;
}
else if (sqlOwningConnection != null)
{
userOpt = (SqlConnectionString)(sqlOwningConnection.UserConnectionOptions);
}
if (sqlOwningConnection != null)
{
recoverySessionData = sqlOwningConnection._recoverySessionData;
}
bool redirectedUserInstance = false;
DbConnectionPoolIdentity identity = null;
// Pass DbConnectionPoolIdentity to SqlInternalConnectionTds if using integrated security.
// Used by notifications.
if (opt.IntegratedSecurity)
{
if (pool != null)
{
identity = pool.Identity;
}
else
{
identity = DbConnectionPoolIdentity.GetCurrent();
}
}
// FOLLOWING IF BLOCK IS ENTIRELY FOR SSE USER INSTANCES
// If "user instance=true" is in the connection string, we're using SSE user instances
if (opt.UserInstance)
{
// opt.DataSource is used to create the SSE connection
redirectedUserInstance = true;
string instanceName;
if ((null == pool) ||
(null != pool && pool.Count <= 0))
{ // Non-pooled or pooled and no connections in the pool.
SqlInternalConnectionTds sseConnection = null;
try
{
// We throw an exception in case of a failure
// NOTE: Cloning connection option opt to set 'UserInstance=True' and 'Enlist=False'
// This first connection is established to SqlExpress to get the instance name
// of the UserInstance.
SqlConnectionString sseopt = new SqlConnectionString(opt, opt.DataSource, userInstance: true, setEnlistValue: false);
sseConnection = new SqlInternalConnectionTds(identity, sseopt, key.Credential, null, "", null, false, applyTransientFaultHandling: applyTransientFaultHandling);
// NOTE: Retrieve <UserInstanceName> here. This user instance name will be used below to connect to the Sql Express User Instance.
instanceName = sseConnection.InstanceName;
if (!instanceName.StartsWith("\\\\.\\", StringComparison.Ordinal))
{
throw SQL.NonLocalSSEInstance();
}
if (null != pool)
{ // Pooled connection - cache result
SqlConnectionPoolProviderInfo providerInfo = (SqlConnectionPoolProviderInfo)pool.ProviderInfo;
// No lock since we are already in creation mutex
providerInfo.InstanceName = instanceName;
}
}
finally
{
if (null != sseConnection)
{
sseConnection.Dispose();
}
}
}
else
{ // Cached info from pool.
SqlConnectionPoolProviderInfo providerInfo = (SqlConnectionPoolProviderInfo)pool.ProviderInfo;
// No lock since we are already in creation mutex
instanceName = providerInfo.InstanceName;
}
// NOTE: Here connection option opt is cloned to set 'instanceName=<UserInstanceName>' that was
// retrieved from the previous SSE connection. For this UserInstance connection 'Enlist=True'.
// options immutable - stored in global hash - don't modify
opt = new SqlConnectionString(opt, instanceName, userInstance: false, setEnlistValue: null);
poolGroupProviderInfo = null; // null so we do not pass to constructor below...
}
result = new SqlInternalConnectionTds(identity, opt, key.Credential, poolGroupProviderInfo, "", null, redirectedUserInstance, userOpt, recoverySessionData, applyTransientFaultHandling: applyTransientFaultHandling, key.AccessToken);
return(result);
}
private SqlConnectionPoolKey(SqlConnectionPoolKey key) : base (key)
{
_credential = key.Credential;
CalculateHashCode();
}
override protected DbConnectionInternal CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions)
{
SqlConnectionString opt = (SqlConnectionString)options;
SqlConnectionPoolKey key = (SqlConnectionPoolKey)poolKey;
SqlInternalConnection result = null;
SessionData recoverySessionData = null;
SqlConnectionString userOpt = null;
if (userOptions != null)
{
userOpt = (SqlConnectionString)userOptions;
}
else if (owningConnection != null)
{
userOpt = (SqlConnectionString)(((SqlConnection)owningConnection).UserConnectionOptions);
}
if (owningConnection != null)
{
recoverySessionData = ((SqlConnection)owningConnection)._recoverySessionData;
}
if (opt.ContextConnection)
{
result = GetContextConnection(opt, poolGroupProviderInfo);
}
else
{
bool redirectedUserInstance = false;
DbConnectionPoolIdentity identity = null;
// Pass DbConnectionPoolIdentity to SqlInternalConnectionTds if using integrated security.
// Used by notifications.
if (opt.IntegratedSecurity)
{
if (pool != null)
{
identity = pool.Identity;
}
else
{
identity = DbConnectionPoolIdentity.GetCurrent();
}
}
// FOLLOWING IF BLOCK IS ENTIRELY FOR SSE USER INSTANCES
// If "user instance=true" is in the connection string, we're using SSE user instances
if (opt.UserInstance)
{
// opt.DataSource is used to create the SSE connection
redirectedUserInstance = true;
string instanceName;
if ((null == pool) ||
(null != pool && pool.Count <= 0)) // Non-pooled or pooled and no connections in the pool.
{
SqlInternalConnectionTds sseConnection = null;
try {
// What about a failure - throw? YES!
//
SqlConnectionString sseopt = new SqlConnectionString(opt, opt.DataSource, true /* user instance=true */, false /* set Enlist = false */);
sseConnection = new SqlInternalConnectionTds(identity, sseopt, key.Credential, null, "", null, false);
// NOTE: Retrieve <UserInstanceName> here. This user instance name will be used below to connect to the Sql Express User Instance.
instanceName = sseConnection.InstanceName;
if (!instanceName.StartsWith("\\\\.\\", StringComparison.Ordinal))
{
throw SQL.NonLocalSSEInstance();
}
if (null != pool) // Pooled connection - cache result
{
SqlConnectionPoolProviderInfo providerInfo = (SqlConnectionPoolProviderInfo)pool.ProviderInfo;
// No lock since we are already in creation mutex
providerInfo.InstanceName = instanceName;
}
}
finally {
if (null != sseConnection)
{
sseConnection.Dispose();
}
}
}
else // Cached info from pool.
{
SqlConnectionPoolProviderInfo providerInfo = (SqlConnectionPoolProviderInfo)pool.ProviderInfo;
// No lock since we are already in creation mutex
instanceName = providerInfo.InstanceName;
}
// NOTE: Here connection option opt is cloned to set 'instanceName=<UserInstanceName>' that was
// retrieved from the previous SSE connection. For this UserInstance connection 'Enlist=True'.
// options immutable - stored in global hash - don't modify
opt = new SqlConnectionString(opt, instanceName, false /* user instance=false */, null /* do not modify the Enlist value */);
poolGroupProviderInfo = null; // null so we do not pass to constructor below...
}
result = new SqlInternalConnectionTds(identity, opt, key.Credential, poolGroupProviderInfo, "", null, redirectedUserInstance, userOpt, recoverySessionData);
}
return(result);
}
public override bool Equals(object obj)
{
SqlConnectionPoolKey key = obj as SqlConnectionPoolKey;
return(key != null && _credential == key._credential && ConnectionString == key.ConnectionString && Object.ReferenceEquals(_accessToken, key._accessToken));
}
private SqlConnectionPoolKey(SqlConnectionPoolKey key) : base(key)
{
_credential = key.Credential;
_accessToken = key.AccessToken;
CalculateHashCode();
}
private SqlConnectionPoolKey(SqlConnectionPoolKey key) : base(key)
{
_credential = key.Credential;
CalculateHashCode();
}
private SqlConnectionPoolKey(SqlConnectionPoolKey key) : base(key)
{
CalculateHashCode();
}
private SqlConnectionPoolKey(SqlConnectionPoolKey key) : base (key)
{
_credential = key.Credential;
_accessToken = key.AccessToken;
CalculateHashCode();
}
private SqlConnectionPoolKey(SqlConnectionPoolKey key) : base(key)
{
CalculateHashCode();
}