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create.go
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create.go
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// Copyright 2015 The Cockroach Authors.
//
// 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. See the AUTHORS file
// for names of contributors.
//
// Author: Peter Mattis (peter@cockroachlabs.com)
package sql
import (
"fmt"
"github.com/cockroachdb/cockroach/security"
"github.com/cockroachdb/cockroach/sql/parser"
)
// CreateDatabase creates a database.
// Privileges: "root" user.
// Notes: postgres requires superuser or "CREATEDB".
// mysql uses the mysqladmin command.
func (p *planner) CreateDatabase(n *parser.CreateDatabase) (planNode, error) {
if n.Name == "" {
return nil, errEmptyDatabaseName
}
if p.user != security.RootUser {
return nil, fmt.Errorf("only %s is allowed to create databases", security.RootUser)
}
desc := makeDatabaseDesc(n)
if err := p.writeDescriptor(databaseKey{string(n.Name)}, &desc, n.IfNotExists); err != nil {
return nil, err
}
return &valuesNode{}, nil
}
// CreateTable creates a table.
// Privileges: WRITE on database.
// Notes: postgres/mysql require CREATE on database.
func (p *planner) CreateTable(n *parser.CreateTable) (planNode, error) {
if err := n.Table.NormalizeTableName(p.session.Database); err != nil {
return nil, err
}
dbDesc, err := p.getDatabaseDesc(n.Table.Database())
if err != nil {
return nil, err
}
if !dbDesc.HasPrivilege(p.user, parser.PrivilegeWrite) {
return nil, fmt.Errorf("user %s does not have %s privilege on database %s",
p.user, parser.PrivilegeWrite, dbDesc.Name)
}
desc, err := makeTableDesc(n)
if err != nil {
return nil, err
}
// Inherit permissions from the database descriptor.
desc.PrivilegeDescriptor = dbDesc.PrivilegeDescriptor
if err := desc.AllocateIDs(); err != nil {
return nil, err
}
if err := p.writeDescriptor(tableKey{dbDesc.ID, n.Table.Table()}, &desc, n.IfNotExists); err != nil {
return nil, err
}
return &valuesNode{}, nil
}