54 lines
1.6 KiB
Java
54 lines
1.6 KiB
Java
package it.cavallium.dbengine.database.disk;
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import io.net5.buffer.ByteBuf;
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import java.io.Closeable;
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import java.io.File;
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import java.io.IOException;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.time.Duration;
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import java.util.Comparator;
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import java.util.concurrent.Phaser;
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import java.util.concurrent.TimeUnit;
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import java.util.concurrent.TimeoutException;
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import org.lmdbjava.Net5ByteBufProxy;
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import org.lmdbjava.Env;
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import static org.lmdbjava.EnvFlags.*;
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public class LLTempLMDBEnv implements Closeable {
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private static final long TWENTY_GIBIBYTES = 20L * 1024L * 1024L * 1024L;
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private static final int MAX_DATABASES = 16384;
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private final Path tempDirectory;
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private final Env<ByteBuf> env;
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private volatile boolean closed;
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public LLTempLMDBEnv() throws IOException {
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tempDirectory = Files.createTempDirectory("lmdb");
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var envBuilder = Env.create(Net5ByteBufProxy.PROXY_NETTY)
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.setMapSize(TWENTY_GIBIBYTES)
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.setMaxDbs(MAX_DATABASES);
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//env = envBuilder.open(tempDirectory.toFile(), MDB_NOLOCK, MDB_NOSYNC, MDB_NOTLS, MDB_NORDAHEAD, MDB_WRITEMAP);
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env = envBuilder.open(tempDirectory.toFile(), MDB_NOTLS, MDB_NOSYNC, MDB_NORDAHEAD, MDB_NOMETASYNC);
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}
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public Env<ByteBuf> getEnv() {
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if (closed) {
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throw new IllegalStateException("Environment closed");
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}
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return env;
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}
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@Override
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public void close() throws IOException {
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this.closed = true;
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env.close();
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//noinspection ResultOfMethodCallIgnored
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Files.walk(tempDirectory)
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.sorted(Comparator.reverseOrder())
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.map(Path::toFile)
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.forEach(File::delete);
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}
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}
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