/*
* 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.hive.metastore;
import com.facebook.presto.spi.security.Privilege;
import com.facebook.presto.spi.security.PrivilegeInfo;
import com.google.common.collect.ImmutableSet;
import org.apache.hadoop.hive.metastore.api.PrivilegeGrantInfo;
import java.util.Arrays;
import java.util.Objects;
import java.util.Set;
import java.util.stream.Collectors;
import static com.facebook.presto.hive.metastore.HivePrivilegeInfo.HivePrivilege.DELETE;
import static com.facebook.presto.hive.metastore.HivePrivilegeInfo.HivePrivilege.INSERT;
import static com.facebook.presto.hive.metastore.HivePrivilegeInfo.HivePrivilege.OWNERSHIP;
import static com.facebook.presto.hive.metastore.HivePrivilegeInfo.HivePrivilege.SELECT;
import static com.facebook.presto.hive.metastore.HivePrivilegeInfo.HivePrivilege.UPDATE;
import static com.google.common.base.MoreObjects.toStringHelper;
import static java.util.Locale.ENGLISH;
public class HivePrivilegeInfo
{
public enum HivePrivilege
{
SELECT, INSERT, UPDATE, DELETE, OWNERSHIP;
}
private final HivePrivilege hivePrivilege;
private final boolean grantOption;
public HivePrivilegeInfo(HivePrivilege hivePrivilege, boolean grantOption)
{
this.hivePrivilege = hivePrivilege;
this.grantOption = grantOption;
}
public HivePrivilege getHivePrivilege()
{
return hivePrivilege;
}
public boolean isGrantOption()
{
return grantOption;
}
public HivePrivilegeInfo withGrantOption(boolean grantOption)
{
return new HivePrivilegeInfo(hivePrivilege, grantOption);
}
public static Set<HivePrivilegeInfo> parsePrivilege(PrivilegeGrantInfo userGrant)
{
boolean withGrantOption = userGrant.isGrantOption();
String name = userGrant.getPrivilege().toUpperCase(ENGLISH);
switch (name) {
case "ALL":
return Arrays.asList(HivePrivilege.values()).stream()
.map(hivePrivilege -> new HivePrivilegeInfo(hivePrivilege, withGrantOption))
.collect(Collectors.toSet());
case "SELECT":
return ImmutableSet.of(new HivePrivilegeInfo(SELECT, withGrantOption));
case "INSERT":
return ImmutableSet.of(new HivePrivilegeInfo(INSERT, withGrantOption));
case "UPDATE":
return ImmutableSet.of(new HivePrivilegeInfo(UPDATE, withGrantOption));
case "DELETE":
return ImmutableSet.of(new HivePrivilegeInfo(DELETE, withGrantOption));
case "OWNERSHIP":
return ImmutableSet.of(new HivePrivilegeInfo(OWNERSHIP, withGrantOption));
}
return ImmutableSet.of();
}
public static HivePrivilege toHivePrivilege(Privilege privilege)
{
switch (privilege) {
case SELECT:
return SELECT;
case INSERT:
return INSERT;
case DELETE:
return DELETE;
case UPDATE:
return UPDATE;
}
return null;
}
public boolean isContainedIn(HivePrivilegeInfo hivePrivilegeInfo)
{
return (getHivePrivilege().equals(hivePrivilegeInfo.getHivePrivilege()) &&
(isGrantOption() == hivePrivilegeInfo.isGrantOption() ||
(!isGrantOption() && hivePrivilegeInfo.isGrantOption())));
}
public Set<PrivilegeInfo> toPrivilegeInfo()
{
switch (getHivePrivilege()) {
case SELECT:
return ImmutableSet.of(new PrivilegeInfo(Privilege.SELECT, isGrantOption()));
case INSERT:
return ImmutableSet.of(new PrivilegeInfo(Privilege.INSERT, isGrantOption()));
case DELETE:
return ImmutableSet.of(new PrivilegeInfo(Privilege.DELETE, isGrantOption()));
case UPDATE:
return ImmutableSet.of(new PrivilegeInfo(Privilege.UPDATE, isGrantOption()));
case OWNERSHIP:
return Arrays.asList(Privilege.values()).stream()
.map(privilege -> new PrivilegeInfo(privilege, Boolean.TRUE))
.collect(Collectors.toSet());
}
return null;
}
@Override
public int hashCode()
{
return Objects.hash(hivePrivilege, grantOption);
}
@Override
public boolean equals(Object o)
{
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
HivePrivilegeInfo hivePrivilegeInfo = (HivePrivilegeInfo) o;
return Objects.equals(hivePrivilege, hivePrivilegeInfo.hivePrivilege) &&
Objects.equals(grantOption, hivePrivilegeInfo.grantOption);
}
@Override
public String toString()
{
return toStringHelper(this)
.add("privilege", hivePrivilege)
.add("grantOption", grantOption)
.toString();
}
}