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Test utils for Neo4j Procedures

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/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * 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.neo4j.test.rule;

import org.neo4j.dbms.api.Neo4jDatabaseManagementServiceBuilder;
import org.neo4j.logging.ExternalLogProviderWrapper;
import org.neo4j.logging.LogProvider;
import org.neo4j.test.TestDatabaseManagementServiceBuilder;

/**
 * JUnit @Rule for configuring, creating and managing an ImpermanentGraphDatabase instance.
 */
public class ImpermanentDbmsRule extends DbmsRule {
    private final LogProvider userLogProvider;
    private final LogProvider internalLogProvider;

    public ImpermanentDbmsRule() {
        this(null);
    }

    public ImpermanentDbmsRule(LogProvider logProvider) {
        this.userLogProvider = logProvider;
        this.internalLogProvider = logProvider;
    }

    @Override
    public ImpermanentDbmsRule startLazily() {
        return (ImpermanentDbmsRule) super.startLazily();
    }

    @Override
    protected Neo4jDatabaseManagementServiceBuilder newFactory() {
        return maybeSetInternalLogProvider(
                maybeSetUserLogProvider(new TestDatabaseManagementServiceBuilder().impermanent()));
    }

    protected final TestDatabaseManagementServiceBuilder maybeSetUserLogProvider(
            TestDatabaseManagementServiceBuilder factory) {
        return (userLogProvider == null) ? factory : factory.setUserLogProvider(userLogProvider);
    }

    protected final TestDatabaseManagementServiceBuilder maybeSetInternalLogProvider(
            TestDatabaseManagementServiceBuilder factory) {
        return (internalLogProvider == null)
                ? factory
                : factory.setInternalLogProvider(new ExternalLogProviderWrapper(internalLogProvider));
    }
}