/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the "Elastic License
 * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side
 * Public License v 1"; you may not use this file except in compliance with, at
 * your election, the "Elastic License 2.0", the "GNU Affero General Public
 * License v3.0 only", or the "Server Side Public License, v 1".
 */

package org.elasticsearch.action.ingest;

import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.ChannelActionListener;
import org.elasticsearch.action.support.local.TransportLocalProjectMetadataAction;
import org.elasticsearch.cluster.ProjectState;
import org.elasticsearch.cluster.block.ClusterBlockException;
import org.elasticsearch.cluster.block.ClusterBlockLevel;
import org.elasticsearch.cluster.project.ProjectResolver;
import org.elasticsearch.cluster.service.ClusterService;
import org.elasticsearch.common.util.concurrent.EsExecutors;
import org.elasticsearch.core.UpdateForV10;
import org.elasticsearch.ingest.IngestService;
import org.elasticsearch.injection.guice.Inject;
import org.elasticsearch.tasks.Task;
import org.elasticsearch.transport.TransportService;

public class GetPipelineTransportAction extends TransportLocalProjectMetadataAction<GetPipelineRequest, GetPipelineResponse> {
    /**
     * NB prior to 9.0 this was a TransportMasterNodeReadAction so for BwC it must be registered with the TransportService until
     * we no longer need to support calling this action remotely.
     */
    @UpdateForV10(owner = UpdateForV10.Owner.DATA_MANAGEMENT)
    @SuppressWarnings("this-escape")
    @Inject
    public GetPipelineTransportAction(
        ClusterService clusterService,
        TransportService transportService,
        ActionFilters actionFilters,
        ProjectResolver projectResolver
    ) {
        super(
            GetPipelineAction.NAME,
            actionFilters,
            transportService.getTaskManager(),
            clusterService,
            EsExecutors.DIRECT_EXECUTOR_SERVICE,
            projectResolver
        );

        transportService.registerRequestHandler(
            actionName,
            executor,
            false,
            true,
            GetPipelineRequest::new,
            (request, channel, task) -> executeDirect(task, request, new ChannelActionListener<>(channel))
        );
    }

    @Override
    protected void localClusterStateOperation(
        Task task,
        GetPipelineRequest request,
        ProjectState state,
        ActionListener<GetPipelineResponse> listener
    ) throws Exception {
        listener.onResponse(new GetPipelineResponse(IngestService.getPipelines(state.metadata(), request.getIds()), request.isSummary()));
    }

    @Override
    protected ClusterBlockException checkBlock(GetPipelineRequest request, ProjectState state) {
        return state.blocks().globalBlockedException(state.projectId(), ClusterBlockLevel.METADATA_READ);
    }

}