io.prestosql.plugin.password.file.FileAuthenticator Maven / Gradle / Ivy
/*
* 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 io.prestosql.plugin.password.file;
import io.prestosql.spi.security.AccessDeniedException;
import io.prestosql.spi.security.BasicPrincipal;
import io.prestosql.spi.security.PasswordAuthenticator;
import javax.inject.Inject;
import java.io.File;
import java.security.Principal;
import java.util.function.Supplier;
import static com.google.common.base.Suppliers.memoizeWithExpiration;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
public class FileAuthenticator
implements PasswordAuthenticator
{
private final Supplier passwordStoreSupplier;
@Inject
public FileAuthenticator(FileConfig config)
{
File file = config.getPasswordFile();
int cacheMaxSize = config.getAuthTokenCacheMaxSize();
passwordStoreSupplier = memoizeWithExpiration(
() -> new PasswordStore(file, cacheMaxSize),
config.getRefreshPeriod().toMillis(),
MILLISECONDS);
}
@Override
public Principal createAuthenticatedPrincipal(String user, String password)
{
if (!passwordStoreSupplier.get().authenticate(user, password)) {
throw new AccessDeniedException("Invalid credentials");
}
return new BasicPrincipal(user);
}
}