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This is a Databricks build of Trino's Hive plugin which includes support for HTTP based transport
for it's Hive metastore thrift interface.
The newest version!
/*
* 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 io.trino.plugin.hive;
import io.trino.filesystem.TrinoInput;
import io.trino.filesystem.TrinoInputFile;
import io.trino.filesystem.TrinoInputStream;
import java.io.IOException;
import java.time.Instant;
import static java.util.Objects.requireNonNull;
public class MonitoredTrinoInputFile
implements TrinoInputFile
{
private final FileFormatDataSourceStats stats;
private final TrinoInputFile delegate;
public MonitoredTrinoInputFile(FileFormatDataSourceStats stats, TrinoInputFile delegate)
{
this.stats = requireNonNull(stats, "stats is null");
this.delegate = requireNonNull(delegate, "delegate is null");
}
@Override
public TrinoInput newInput()
throws IOException
{
return new MonitoredTrinoInput(stats, delegate.newInput());
}
@Override
public TrinoInputStream newStream()
throws IOException
{
return new MonitoredTrinoInputStream(stats, delegate.newStream());
}
@Override
public long length()
throws IOException
{
return delegate.length();
}
@Override
public Instant lastModified()
throws IOException
{
return delegate.lastModified();
}
@Override
public boolean exists()
throws IOException
{
return delegate.exists();
}
@Override
public String location()
{
return delegate.location();
}
@Override
public String toString()
{
return delegate.toString();
}
private static final class MonitoredTrinoInput
implements TrinoInput
{
private final FileFormatDataSourceStats stats;
private final TrinoInput delegate;
public MonitoredTrinoInput(FileFormatDataSourceStats stats, TrinoInput delegate)
{
this.stats = requireNonNull(stats, "stats is null");
this.delegate = requireNonNull(delegate, "delegate is null");
}
@Override
public void readFully(long position, byte[] buffer, int bufferOffset, int bufferLength)
throws IOException
{
long readStart = System.nanoTime();
delegate.readFully(position, buffer, bufferOffset, bufferLength);
stats.readDataBytesPerSecond(bufferLength, System.nanoTime() - readStart);
}
@Override
public int readTail(byte[] buffer, int bufferOffset, int bufferLength)
throws IOException
{
long readStart = System.nanoTime();
int size = delegate.readTail(buffer, bufferOffset, bufferLength);
stats.readDataBytesPerSecond(size, System.nanoTime() - readStart);
return size;
}
@Override
public void close()
throws IOException
{
delegate.close();
}
@Override
public String toString()
{
return delegate.toString();
}
}
private static final class MonitoredTrinoInputStream
extends TrinoInputStream
{
private final FileFormatDataSourceStats stats;
private final TrinoInputStream delegate;
public MonitoredTrinoInputStream(FileFormatDataSourceStats stats, TrinoInputStream delegate)
{
this.stats = requireNonNull(stats, "stats is null");
this.delegate = requireNonNull(delegate, "delegate is null");
}
@Override
public long getPosition()
throws IOException
{
return delegate.getPosition();
}
@Override
public void seek(long position)
throws IOException
{
delegate.seek(position);
}
@Override
public int read()
throws IOException
{
long readStart = System.nanoTime();
int value = delegate.read();
stats.readDataBytesPerSecond(1, System.nanoTime() - readStart);
return value;
}
@Override
public int read(byte[] b, int off, int len)
throws IOException
{
long readStart = System.nanoTime();
int size = delegate.read(b, off, len);
stats.readDataBytesPerSecond(size, System.nanoTime() - readStart);
return size;
}
@Override
public long skip(long n)
throws IOException
{
long readStart = System.nanoTime();
long size = delegate.skip(n);
stats.readDataBytesPerSecond(size, System.nanoTime() - readStart);
return size;
}
@Override
public void close()
throws IOException
{
delegate.close();
}
}
}