ReadOnlyAccessControl.java

/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.facebook.presto.plugin.base.security;

import com.facebook.presto.common.Subfield;
import com.facebook.presto.spi.ColumnMetadata;
import com.facebook.presto.spi.SchemaTableName;
import com.facebook.presto.spi.connector.ConnectorAccessControl;
import com.facebook.presto.spi.connector.ConnectorTransactionHandle;
import com.facebook.presto.spi.security.AccessControlContext;
import com.facebook.presto.spi.security.ConnectorIdentity;
import com.facebook.presto.spi.security.PrestoPrincipal;
import com.facebook.presto.spi.security.Privilege;

import java.util.List;
import java.util.Set;

import static com.facebook.presto.spi.security.AccessDeniedException.denyGrantTablePrivilege;
import static com.facebook.presto.spi.security.AccessDeniedException.denyRenameView;
import static com.facebook.presto.spi.security.AccessDeniedException.denyRevokeTablePrivilege;
import static com.facebook.presto.spi.security.AccessDeniedException.denyTruncateTable;

public class ReadOnlyAccessControl
        implements ConnectorAccessControl
{
    @Override
    public void checkCanShowSchemas(ConnectorTransactionHandle transactionHandle, ConnectorIdentity identity, AccessControlContext context)
    {
    }

    @Override
    public Set<String> filterSchemas(ConnectorTransactionHandle transactionHandle, ConnectorIdentity identity, AccessControlContext context, Set<String> schemaNames)
    {
        return schemaNames;
    }

    @Override
    public void checkCanShowCreateTable(ConnectorTransactionHandle transactionHandle, ConnectorIdentity identity, AccessControlContext context, SchemaTableName tableName)
    {
        // allow
    }

    @Override
    public void checkCanShowTablesMetadata(ConnectorTransactionHandle transactionHandle, ConnectorIdentity identity, AccessControlContext context, String schemaName)
    {
    }

    @Override
    public Set<SchemaTableName> filterTables(ConnectorTransactionHandle transactionHandle, ConnectorIdentity identity, AccessControlContext context, Set<SchemaTableName> tableNames)
    {
        return tableNames;
    }

    @Override
    public void checkCanShowColumnsMetadata(ConnectorTransactionHandle transactionHandle, ConnectorIdentity identity, AccessControlContext context, SchemaTableName tableName)
    {
        // allow
    }

    @Override
    public List<ColumnMetadata> filterColumns(ConnectorTransactionHandle transactionHandle, ConnectorIdentity identity, AccessControlContext context, SchemaTableName tableName, List<ColumnMetadata> columns)
    {
        return columns;
    }

    @Override
    public void checkCanSelectFromColumns(ConnectorTransactionHandle transactionHandle, ConnectorIdentity identity, AccessControlContext context, SchemaTableName tableName, Set<Subfield> columnOrSubfieldNames)
    {
        // allow
    }

    @Override
    public void checkCanTruncateTable(ConnectorTransactionHandle transactionHandle, ConnectorIdentity identity, AccessControlContext context, SchemaTableName tableName)
    {
        denyTruncateTable(tableName.toString());
    }

    @Override
    public void checkCanCreateViewWithSelectFromColumns(ConnectorTransactionHandle transactionHandle, ConnectorIdentity identity, AccessControlContext context, SchemaTableName tableName, Set<String> columnNames)
    {
        // allow
    }

    @Override
    public void checkCanRenameView(ConnectorTransactionHandle transaction, ConnectorIdentity identity, AccessControlContext context, SchemaTableName viewName, SchemaTableName newViewName)
    {
        denyRenameView(viewName.toString(), newViewName.toString());
    }

    @Override
    public void checkCanSetCatalogSessionProperty(ConnectorTransactionHandle transactionHandle, ConnectorIdentity identity, AccessControlContext context, String propertyName)
    {
        // allow
    }

    @Override
    public void checkCanGrantTablePrivilege(ConnectorTransactionHandle transaction, ConnectorIdentity identity, AccessControlContext context, Privilege privilege, SchemaTableName tableName, PrestoPrincipal grantee, boolean withGrantOption)
    {
        denyGrantTablePrivilege(privilege.name(), tableName.toString());
    }

    @Override
    public void checkCanRevokeTablePrivilege(ConnectorTransactionHandle transaction, ConnectorIdentity identity, AccessControlContext context, Privilege privilege, SchemaTableName tableName, PrestoPrincipal revokee, boolean grantOptionFor)
    {
        denyRevokeTablePrivilege(privilege.name(), tableName.toString());
    }

    @Override
    public void checkCanShowRoles(ConnectorTransactionHandle transactionHandle, ConnectorIdentity identity, AccessControlContext context, String catalogName)
    {
        // allow
    }

    @Override
    public void checkCanShowCurrentRoles(ConnectorTransactionHandle transactionHandle, ConnectorIdentity identity, AccessControlContext context, String catalogName)
    {
        // allow
    }

    @Override
    public void checkCanShowRoleGrants(ConnectorTransactionHandle transactionHandle, ConnectorIdentity identity, AccessControlContext context, String catalogName)
    {
        // allow
    }
}