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/*
* Copyright (c) 2021 AtLarge Research
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package org.opendc.trace.util.parquet
import org.apache.parquet.io.OutputFile
import org.apache.parquet.io.PositionOutputStream
import java.io.File
import java.io.OutputStream
import java.nio.file.Files
import java.nio.file.Path
import java.nio.file.StandardOpenOption
/**
* An [OutputFile] on the local filesystem.
*/
public class LocalOutputFile(private val path: Path) : OutputFile {
/**
* Construct a [LocalOutputFile] from the specified [file]
*/
public constructor(file: File) : this(file.toPath())
override fun create(blockSizeHint: Long): PositionOutputStream {
val output = Files.newOutputStream(path, StandardOpenOption.CREATE_NEW, StandardOpenOption.WRITE)
return NioPositionOutputStream(output)
}
override fun createOrOverwrite(blockSizeHint: Long): PositionOutputStream {
val output = Files.newOutputStream(path, StandardOpenOption.CREATE, StandardOpenOption.WRITE, StandardOpenOption.TRUNCATE_EXISTING)
return NioPositionOutputStream(output)
}
override fun supportsBlockSize(): Boolean = false
override fun defaultBlockSize(): Long = throw UnsupportedOperationException("Local filesystem does not have default block size")
override fun getPath(): String = path.toString()
/**
* Implementation of [PositionOutputStream] for an [OutputStream].
*/
private class NioPositionOutputStream(private val output: OutputStream) : PositionOutputStream() {
/**
* The current position in the file.
*/
private var _pos = 0L
override fun getPos(): Long = _pos
override fun write(b: Int) {
output.write(b)
_pos++
}
override fun write(b: ByteArray) {
output.write(b)
_pos += b.size
}
override fun write(
b: ByteArray,
off: Int,
len: Int,
) {
output.write(b, off, len)
_pos += len
}
override fun flush() {
output.flush()
}
override fun close() {
output.close()
}
override fun toString(): String = "NioPositionOutputStream[output=$output]"
}
}
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