/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you 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 org.elasticsearch.cloud.azure.blobstore.util;
import com.microsoft.azure.storage.StorageException;
import org.elasticsearch.SpecialPermission;
import java.net.SocketPermission;
import java.net.URISyntaxException;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
/**
* This plugin uses azure libraries to connect to azure storage services. For these remote calls the plugin needs
* {@link SocketPermission} 'connect' to establish connections. This class wraps the operations requiring access in
* {@link AccessController#doPrivileged(PrivilegedAction)} blocks.
*/
public final class SocketAccess {
private SocketAccess() {}
public static <T> T doPrivilegedException(PrivilegedExceptionAction<T> operation) throws StorageException, URISyntaxException {
SpecialPermission.check();
try {
return AccessController.doPrivileged(operation);
} catch (PrivilegedActionException e) {
throw (StorageException) e.getCause();
}
}
public static void doPrivilegedVoidException(StorageRunnable action) throws StorageException, URISyntaxException {
SpecialPermission.check();
try {
AccessController.doPrivileged((PrivilegedExceptionAction<Void>) () -> {
action.executeCouldThrow();
return null;
});
} catch (PrivilegedActionException e) {
Throwable cause = e.getCause();
if (cause instanceof StorageException) {
throw (StorageException) cause;
} else {
throw (URISyntaxException) cause;
}
}
}
@FunctionalInterface
public interface StorageRunnable {
void executeCouldThrow() throws StorageException, URISyntaxException;
}
}