hazelcast-master/hazelcast/src/main/java/com/hazelcast/client/impl/protocol/task/dynamicconfig/AbstractAddConfigMessageTask.java
/*
 * Copyright (c) 2008-2023, Hazelcast, Inc. All Rights Reserved.
 *
 * 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.hazelcast.client.impl.protocol.task.dynamicconfig;

import com.hazelcast.client.impl.protocol.ClientMessage;
import com.hazelcast.client.impl.protocol.task.AbstractMessageTask;
import com.hazelcast.config.ListenerConfig;
import com.hazelcast.config.MergePolicyConfig;
import com.hazelcast.instance.impl.Node;
import com.hazelcast.internal.dynamicconfig.ClusterWideConfigurationService;
import com.hazelcast.internal.dynamicconfig.ConfigurationService;
import com.hazelcast.internal.nio.Connection;
import com.hazelcast.nio.serialization.IdentifiedDataSerializable;
import com.hazelcast.security.permission.ConfigPermission;

import java.security.Permission;
import java.util.ArrayList;
import java.util.List;
import java.util.function.BiConsumer;

import static com.hazelcast.internal.util.ConcurrencyUtil.CALLER_RUNS;

/**
 * Base implementation for dynamic add***Config methods.
 */
public abstract class AbstractAddConfigMessageTask<P> extends AbstractMessageTask<P>
        implements BiConsumer<Object, Throwable> {

    private static final ConfigPermission CONFIG_PERMISSION = new ConfigPermission();

    public AbstractAddConfigMessageTask(ClientMessage clientMessage, Node node, Connection connection) {
        super(clientMessage, node, connection);
    }


    @Override
    public String getServiceName() {
        return ConfigurationService.SERVICE_NAME;
    }

    @Override
    public String getDistributedObjectName() {
        return null;
    }

    @Override
    public Permission getRequiredPermission() {
        return CONFIG_PERMISSION;
    }

    @Override
    public Object[] getParameters() {
        // todo may have to specify for security
        return new Object[0];
    }

    @Override
    public final void processMessage() {
        IdentifiedDataSerializable config = getConfig();
        ClusterWideConfigurationService service = getService(ConfigurationService.SERVICE_NAME);
        if (checkStaticConfigDoesNotExist(config)) {
            service.broadcastConfigAsync(config)
                   .whenCompleteAsync(this, CALLER_RUNS);
        } else {
            sendResponse(null);
        }
    }

    @Override
    public void accept(Object response, Throwable throwable) {
        if (throwable == null) {
            sendResponse(response);
        } else {
            handleProcessingFailure(throwable);
        }
    }

    protected MergePolicyConfig mergePolicyConfig(String mergePolicy, int batchSize) {
        return new MergePolicyConfig(mergePolicy, batchSize);
    }

    protected List<? extends ListenerConfig> adaptListenerConfigs(List<ListenerConfigHolder> listenerConfigHolders) {
        if (listenerConfigHolders == null || listenerConfigHolders.isEmpty()) {
            return null;
        }

        List<ListenerConfig> itemListenerConfigs = new ArrayList<ListenerConfig>();
        for (ListenerConfigHolder listenerConfigHolder : listenerConfigHolders) {
            itemListenerConfigs.add(listenerConfigHolder.asListenerConfig(serializationService));
        }
        return itemListenerConfigs;
    }

    protected abstract IdentifiedDataSerializable getConfig();

    protected abstract boolean checkStaticConfigDoesNotExist(IdentifiedDataSerializable config);
}
