83 lines
2.4 KiB
Java
83 lines
2.4 KiB
Java
package it.cavallium.dbengine.database.disk;
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import static it.cavallium.dbengine.database.disk.LLTempHugePqEnv.getColumnOptions;
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import com.google.common.primitives.Ints;
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import io.micrometer.core.instrument.composite.CompositeMeterRegistry;
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import io.netty5.buffer.api.BufferAllocator;
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import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
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import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
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import java.io.Closeable;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.Objects;
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import java.util.concurrent.locks.ReentrantLock;
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import java.util.concurrent.locks.ReentrantReadWriteLock;
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import java.util.concurrent.locks.StampedLock;
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import org.rocksdb.AbstractComparator;
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import org.rocksdb.ColumnFamilyDescriptor;
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import org.rocksdb.ColumnFamilyHandle;
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import org.rocksdb.RocksDB;
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import org.rocksdb.RocksDBException;
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public class HugePqEnv implements Closeable {
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private final RocksDB db;
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private final ArrayList<ColumnFamilyHandle> defaultCfh;
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private final Int2ObjectMap<ColumnFamilyHandle> cfhs = new Int2ObjectOpenHashMap<>();
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public HugePqEnv(RocksDB db, ArrayList<ColumnFamilyHandle> defaultCfh) {
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this.db = db;
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this.defaultCfh = defaultCfh;
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}
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@Override
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public void close() throws IOException {
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for (var cfh : defaultCfh) {
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db.destroyColumnFamilyHandle(cfh);
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}
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try {
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db.closeE();
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} catch (RocksDBException e) {
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throw new IOException(e);
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}
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}
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public int createColumnFamily(int name, AbstractComparator comparator) throws RocksDBException {
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var cfh = db.createColumnFamily(new ColumnFamilyDescriptor(Ints.toByteArray(name), getColumnOptions(comparator)));
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synchronized (cfhs) {
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var prev = cfhs.put(name, cfh);
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if (prev != null) {
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throw new UnsupportedOperationException("Db " + name + " already exists");
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}
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return name;
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}
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}
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public void deleteColumnFamily(int db) throws RocksDBException {
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ColumnFamilyHandle cfh;
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synchronized (cfhs) {
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cfh = cfhs.remove(db);
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}
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if (cfh != null) {
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this.db.dropColumnFamily(cfh);
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this.db.destroyColumnFamilyHandle(cfh);
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}
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}
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public StandardRocksDBColumn openDb(int hugePqId) {
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ColumnFamilyHandle cfh;
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synchronized (cfhs) {
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cfh = Objects.requireNonNull(cfhs.get(hugePqId), () -> "column " + hugePqId + " does not exist");
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}
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return new StandardRocksDBColumn(db,
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true,
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BufferAllocator.offHeapPooled(),
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db.getName(),
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cfh,
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new CompositeMeterRegistry(),
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new StampedLock()
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);
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}
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}
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