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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;

import com.mongodb.lang.Nullable;
import org.bson.BsonDocument;
import org.bson.BsonInt32;
import org.bson.BsonValue;
import static java.lang.String.format;

/**
 *  An exception representing an error reported due to a write failure.
 *
 * @deprecated Usage of this API is not supported in AEM as a Cloud Service.
 */
@Deprecated(since = "2021-05-27")
public class WriteConcernException extends MongoServerException {

    private static final long serialVersionUID = -1100801000476719450L;

    private final WriteConcernResult writeConcernResult;

    private final BsonDocument response;

    /**
     * Construct a new instance.
     *
     * @param response the response to the write operation
     * @param address the address of the server that executed the operation
     * @param writeConcernResult the write concern result
     */
    public WriteConcernException(final BsonDocument response, final ServerAddress address, final WriteConcernResult writeConcernResult) {
        super(extractErrorCode(response), format("Write failed with error code %d and error message '%s'", extractErrorCode(response), extractErrorMessage(response)), address);
        this.response = response;
        this.writeConcernResult = writeConcernResult;
    }

    /**
     * For internal use only: extract the error code from the response to a write command.
     * @param response the response
     * @return the code, or -1 if there is none
     */
    public static int extractErrorCode(final BsonDocument response) {
        // mongos may set an err field containing duplicate key error information
        String errorMessage = extractErrorMessage(response);
        if (errorMessage != null) {
            if (response.containsKey("err")) {
                if (errorMessage.contains("E11000 duplicate key error")) {
                    return 11000;
                }
            }
            // mongos may return a list of documents representing write command responses from each shard.  Return the one with a matching
            // "err" field, so that it can be used to get the error code
            if (!response.containsKey("code") && response.containsKey("errObjects")) {
                for (BsonValue curErrorDocument : response.getArray("errObjects")) {
                    if (errorMessage.equals(extractErrorMessage(curErrorDocument.asDocument()))) {
                        return curErrorDocument.asDocument().getNumber("code").intValue();
                    }
                }
            }
        }
        return response.getNumber("code", new BsonInt32(-1)).intValue();
    }

    /**
     * For internal use only: extract the error message from the response to a write command.
     *
     * @param response the response
     * @return the error message
     */
    @Nullable
    public static String extractErrorMessage(final BsonDocument response) {
        if (response.isString("err")) {
            return response.getString("err").getValue();
        } else if (response.isString("errmsg")) {
            return response.getString("errmsg").getValue();
        } else {
            return null;
        }
    }

    /**
     * Gets the write result.
     *
     * @return the write result
     */
    public WriteConcernResult getWriteConcernResult() {
        return writeConcernResult;
    }

    /**
     * Gets the error code associated with the write concern failure.
     *
     * @return the error code
     */
    public int getErrorCode() {
        return extractErrorCode(response);
    }

    /**
     * Gets the error message associated with the write concern failure.
     *
     * @return the error message
     */
    @Nullable
    public String getErrorMessage() {
        return extractErrorMessage(response);
    }

    /**
     * Gets the response to the write operation.
     *
     * @return the response to the write operation
     */
    public BsonDocument getResponse() {
        return response;
    }
}




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