org.flywaydb.core.internal.command.MongoClean.java Source code

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Here is the source code for org.flywaydb.core.internal.command.MongoClean.java

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/**
 * Copyright 2010-2016 Boxfuse GmbH
 *
 * 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 org.flywaydb.core.internal.command;

import org.flywaydb.core.api.FlywayException;
import org.flywaydb.core.api.callback.MongoFlywayCallback;
import org.flywaydb.core.internal.util.logging.Log;
import org.flywaydb.core.internal.util.logging.LogFactory;

import com.mongodb.MongoClient;
import com.mongodb.client.MongoDatabase;

public class MongoClean implements Clean {
    private static final Log LOG = LogFactory.getLog(MongoClean.class);

    /**
     * Whether to disable clean or not.
     */
    private boolean cleanDisabled;

    /**
     * The list of callbacks that fire before or after the clean task is executed.
     */
    private final MongoFlywayCallback[] callbacks;

    /**
     * The MongoDB client for interacting with the database.
     */
    private final MongoClient client;

    /**
     * Create a new MongoDB database cleaner.
     *
     * @param client The MongoDB client used to interact with the database.
     * @param callbacks The list of callbacks to run before and after the "clean" command.
     * @param cleanDisabled Whether or not to disable the "clean" command.
     */
    public MongoClean(MongoClient client, MongoFlywayCallback[] callbacks, boolean cleanDisabled) {
        this.cleanDisabled = cleanDisabled;
        this.callbacks = callbacks;
        this.client = client;
    }

    @Override
    public void clean() throws FlywayException {
        if (cleanDisabled) {
            throw new FlywayException(
                    "Unable to execute clean as it has been disabled with the \"flyway.cleanDisabled\" property.");
        }

        for (final MongoFlywayCallback callback : callbacks) {
            callback.beforeClean(client);
        }

        for (String dbName : client.listDatabaseNames()) {
            MongoDatabase db = client.getDatabase(dbName);
            for (String collectionName : db.listCollectionNames()) {
                db.getCollection(collectionName).drop();
            }
        }
        LOG.info("Successfully cleaned Mongo.");

        for (final MongoFlywayCallback callback : callbacks) {
            callback.afterClean(client);
        }
    }
}