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/*
 * Copyright 2008-present MongoDB, Inc.
 *
 * 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.mongodb.internal.connection;

import com.mongodb.MongoNamespace;
import com.mongodb.WriteConcernResult;
import com.mongodb.async.SingleResultCallback;
import com.mongodb.bulk.UpdateRequest;
import com.mongodb.connection.ByteBufferBsonOutput;
import com.mongodb.diagnostics.logging.Logger;
import com.mongodb.diagnostics.logging.Loggers;
import org.bson.BsonArray;
import org.bson.BsonBoolean;
import org.bson.BsonDocument;
import java.util.List;
import static java.lang.String.format;
import static java.util.Collections.singletonList;

/**
 *  An implementation of the MongoDB OP_UPDATE wire protocol.
 *
 *  @mongodb.driver.manual ../meta-driver/latest/legacy/mongodb-wire-protocol/#op-update OP_UPDATE
 *
 * @deprecated Usage of this API is not supported in AEM as a Cloud Service.
 */
@Deprecated(since = "2021-05-27")
class UpdateProtocol extends WriteProtocol {

    private static final com.mongodb.diagnostics.logging.Logger LOGGER = Loggers.getLogger("protocol.update");

    private final UpdateRequest updateRequest;

    UpdateProtocol(final MongoNamespace namespace, final boolean ordered, final UpdateRequest updateRequest) {
        super(namespace, ordered);
        this.updateRequest = updateRequest;
    }

    @Override
    public WriteConcernResult execute(final InternalConnection connection) {
        if (LOGGER.isDebugEnabled()) {
            LOGGER.debug(format("Updating documents in namespace %s on connection [%s] to server %s", getNamespace(), connection.getDescription().getConnectionId(), connection.getDescription().getServerAddress()));
        }
        WriteConcernResult writeConcernResult = super.execute(connection);
        LOGGER.debug("Update completed");
        return writeConcernResult;
    }

    @Override
    public void executeAsync(final InternalConnection connection, final SingleResultCallback callback) {
        try {
            if (LOGGER.isDebugEnabled()) {
                LOGGER.debug(format("Asynchronously updating documents in namespace %s on connection [%s] to server %s", getNamespace(), connection.getDescription().getConnectionId(), connection.getDescription().getServerAddress()));
            }
            super.executeAsync(connection, new SingleResultCallback() {

                @Override
                public void onResult(final WriteConcernResult result, final Throwable t) {
                    if (t != null) {
                        callback.onResult(null, t);
                    } else {
                        LOGGER.debug("Asynchronous update completed");
                        callback.onResult(result, null);
                    }
                }
            });
        } catch (Throwable t) {
            callback.onResult(null, t);
        }
    }

    @Override
    protected BsonDocument getAsWriteCommand(final ByteBufferBsonOutput bsonOutput, final int firstDocumentPosition) {
        List documents = ByteBufBsonDocument.createList(bsonOutput, firstDocumentPosition);
        BsonDocument updateDocument = new BsonDocument("q", documents.get(0)).append("u", documents.get(1));
        if (updateRequest.isMulti()) {
            updateDocument.append("multi", BsonBoolean.TRUE);
        }
        if (updateRequest.isUpsert()) {
            updateDocument.append("upsert", BsonBoolean.TRUE);
        }
        return getBaseCommandDocument("update").append("updates", new BsonArray(singletonList(updateDocument)));
    }

    @Override
    protected RequestMessage createRequestMessage(final MessageSettings settings) {
        return new UpdateMessage(getNamespace().getFullName(), updateRequest, settings);
    }

    @Override
    protected Logger getLogger() {
        return LOGGER;
    }
}