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Loaded using service loading. Since importer logic moved into ImportLogic and ParallelBatchImporter is a thin layer using it, this service loading enables other implementations using that same base
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64 changes: 64 additions & 0 deletions
64
community/kernel/src/main/java/org/neo4j/unsafe/impl/batchimport/BatchImporterFactory.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,64 @@ | ||
| /* | ||
| * Copyright (c) 2002-2018 "Neo Technology," | ||
| * Network Engine for Objects in Lund AB [http://neotechnology.com] | ||
| * | ||
| * This file is part of Neo4j. | ||
| * | ||
| * Neo4j is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
| package org.neo4j.unsafe.impl.batchimport; | ||
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|
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| import java.io.File; | ||
| import java.util.NoSuchElementException; | ||
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| import org.neo4j.helpers.Service; | ||
| import org.neo4j.io.fs.FileSystemAbstraction; | ||
| import org.neo4j.io.pagecache.PageCache; | ||
| import org.neo4j.kernel.configuration.Config; | ||
| import org.neo4j.kernel.impl.logging.LogService; | ||
| import org.neo4j.kernel.impl.store.format.RecordFormats; | ||
| import org.neo4j.unsafe.impl.batchimport.staging.ExecutionMonitor; | ||
|
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| public abstract class BatchImporterFactory extends Service | ||
| { | ||
| private final int priority; | ||
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| protected BatchImporterFactory( String key, int priority ) | ||
| { | ||
| super( key ); | ||
| this.priority = priority; | ||
| } | ||
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| public abstract BatchImporter instantiate( File storeDir, FileSystemAbstraction fileSystem, PageCache externalPageCache, | ||
| Configuration config, LogService logService, ExecutionMonitor executionMonitor, | ||
| AdditionalInitialIds additionalInitialIds, Config dbConfig, RecordFormats recordFormats, ImportLogic.Monitor monitor ); | ||
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| public static BatchImporterFactory withHighestPriority() | ||
| { | ||
| Iterable<BatchImporterFactory> candidates = Service.load( BatchImporterFactory.class ); | ||
| BatchImporterFactory highestPrioritized = null; | ||
| for ( BatchImporterFactory candidate : candidates ) | ||
| { | ||
| if ( highestPrioritized == null || candidate.priority > highestPrioritized.priority ) | ||
| { | ||
| highestPrioritized = candidate; | ||
| } | ||
| } | ||
| if ( highestPrioritized == null ) | ||
| { | ||
| throw new NoSuchElementException( "No batch importers found" ); | ||
| } | ||
| return highestPrioritized; | ||
| } | ||
| } |
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48 changes: 48 additions & 0 deletions
48
.../kernel/src/main/java/org/neo4j/unsafe/impl/batchimport/StandardBatchImporterFactory.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| /* | ||
| * Copyright (c) 2002-2018 "Neo Technology," | ||
| * Network Engine for Objects in Lund AB [http://neotechnology.com] | ||
| * | ||
| * This file is part of Neo4j. | ||
| * | ||
| * Neo4j is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 3 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
| package org.neo4j.unsafe.impl.batchimport; | ||
|
|
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| import java.io.File; | ||
|
|
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| import org.neo4j.io.fs.FileSystemAbstraction; | ||
| import org.neo4j.io.pagecache.PageCache; | ||
| import org.neo4j.kernel.configuration.Config; | ||
| import org.neo4j.kernel.impl.logging.LogService; | ||
| import org.neo4j.kernel.impl.store.format.RecordFormats; | ||
| import org.neo4j.unsafe.impl.batchimport.staging.ExecutionMonitor; | ||
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| public class StandardBatchImporterFactory extends BatchImporterFactory | ||
| { | ||
| public static final String NAME = "standard"; | ||
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| public StandardBatchImporterFactory() | ||
| { | ||
| super( NAME, 1 ); | ||
| } | ||
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| @Override | ||
| public BatchImporter instantiate( File storeDir, FileSystemAbstraction fileSystem, PageCache externalPageCache, Configuration config, | ||
| LogService logService, ExecutionMonitor executionMonitor, AdditionalInitialIds additionalInitialIds, Config dbConfig, | ||
| RecordFormats recordFormats, ImportLogic.Monitor monitor ) | ||
| { | ||
| return new ParallelBatchImporter( storeDir, fileSystem, externalPageCache, config, logService, executionMonitor, | ||
| additionalInitialIds, dbConfig, recordFormats, monitor ); | ||
| } | ||
| } |
1 change: 1 addition & 0 deletions
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...c/main/resources/META-INF/services/org.neo4j.unsafe.impl.batchimport.BatchImporterFactory
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| org.neo4j.unsafe.impl.batchimport.StandardBatchImporterFactory |