public async Task UpdateRoleAsync(CassandraRole role, CancellationToken cancellationToken = default(CancellationToken))
{
if (role == null)
{
throw new ArgumentNullException("role");
}
if (string.IsNullOrEmpty(role.Name))
{
throw new ArgumentNullException("role", "role.Name cannot be null or empty");
}
var modifiedDate = DateTimeOffset.UtcNow;
role.Modified = modifiedDate;
var batch = new BatchStatement();
string oldName;
var changed = role.HasNameChanged(out oldName);
if (changed)
{
// This a Create/Delete move
// can only change the name if that target name does not exist.
var findResult = await FindRoleByNameAsync(role.Name);
if (findResult.Any())
{
// sorry, no go, this is record must either be deleted first or use another name.
throw new Exception(
string.Format(
"Cannot change role name:[{0}] to an existing role, pick another name, or delete this one first",
role.Name));
}
var boundStatements = await BuildCreateStatements(role);
batch.AddRange(boundStatements);
var oldRole = new CassandraRole(role.TenantId, oldName);
boundStatements = await BuildDeleteStatements(oldRole);
batch.AddRange(boundStatements);
await CassandraSession.ExecuteAsync(batch).ConfigureAwait(false);
await RenameRoleNameInUsersAsync(oldName, role.Name, cancellationToken);
}
else
{
PreparedStatement[] prepared = await _updateRole;
// UPDATE roles ...
batch.Add(prepared[0].Bind(role.Name, role.DisplayName, role.IsSystemRole, modifiedDate, role.Id));
// UPDATE roles_by_name ... (since username hasn't changed)
batch.Add(prepared[1].Bind(role.DisplayName, role.IsSystemRole, modifiedDate, role.TenantId, role.Name));
await CassandraSession.ExecuteAsync(batch).ConfigureAwait(false);
}
}
public async Task DeleteRoleAsync(CassandraRole role)
{
PreparedStatement[] prepared = await _deleteRole;
var batch = new BatchStatement();
// DELETE FROM roles ...
batch.Add(prepared[0].Bind(role.Id));
// DELETE FROM roles_by_rolename ...
batch.Add(prepared[1].Bind(role.Name, role.TenantId));
await CassandraSession.ExecuteAsync(batch).ConfigureAwait(false);
}
private async Task <IEnumerable <BoundStatement> > BuildDeleteStatements(CassandraRole role)
{
List <BoundStatement> boundStatements = new List <BoundStatement>();
PreparedStatement[] prepared = await _deleteRole;
// DELETE FROM roles ...
boundStatements.Add(prepared[0].Bind(role.Id));
// DELETE FROM roles_by_rolename ...
boundStatements.Add(prepared[1].Bind(role.Name, role.TenantId));
return(boundStatements);
}
public async Task CreateRoleAsync(CassandraRole role,
CancellationToken cancellationToken = default(CancellationToken))
{
if (role == null)
{
throw new ArgumentNullException("role");
}
var boundStatements = await BuildCreateStatements(role);
cancellationToken.ThrowIfCancellationRequested();
var batch = new BatchStatement();
batch.AddRange(boundStatements);
await CassandraSession.ExecuteAsync(batch).ConfigureAwait(false);
}
private async Task <IEnumerable <BoundStatement> > BuildCreateStatements(CassandraRole role)
{
var createdDate = DateTimeOffset.UtcNow;
role.Created = createdDate;
role.TenantId = role.IsGlobal ? Guid.Empty : TenantId;
PreparedStatement[] preparedStatements = await _createRole;
List <BoundStatement> boundStatements = new List <BoundStatement>();
var batch = new BatchStatement();
foreach (var preparedStatement in preparedStatements)
{
boundStatements.Add(preparedStatement.Bind(role.Id, role.Name, role.DisplayName, role.IsSystemRole, role.IsGlobal,
role.TenantId, createdDate, null));
}
return(boundStatements);
}
/// <summary>
/// Creates a CassandraUser from a Row. If the Row is null, returns null.
/// </summary>
public static CassandraRole FromRow(this Row row)
{
if (row == null)
{
return(null);
}
var role = new CassandraRole()
{
Name = row.GetValue <string>("name"),
DisplayName = row.GetValue <string>("displayname"),
IsSystemRole = row.GetValue <bool>("is_systemrole"),
IsGlobal = row.GetValue <bool>("is_global"),
TenantId = row.GetValue <Guid>("tenantid"),
Created = row.GetValue <DateTimeOffset>("created"),
Modified = row.IsNull("modified") ? new DateTimeOffset?() : row.GetValue <DateTimeOffset>("modified"),
};
return(role);
}
