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[PARQUET-1500] Replace Closeables with try-with-resources#597

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Merged
gszadovszky merged 1 commit into from
Jan 25, 2019
Merged

[PARQUET-1500] Replace Closeables with try-with-resources #597

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8 changes: 5 additions & 3 deletions parquet-common/src/main/java/org/apache/parquet/Closeables.java
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Original file line numberDiff line numberDiff line change
@@ -1,14 +1,14 @@
/*
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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
Expand All@@ -26,7 +26,9 @@

/**
* Utility for working with {@link java.io.Closeable}ss
* @deprecated will be removed in 2.0.0. Use Java try-with-resource instead.
*/
@Deprecated
public final class Closeables {
private Closeables() { }

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46 changes: 14 additions & 32 deletions parquet-hadoop/src/main/java/org/apache/parquet/hadoop/util/SerializationUtil.java
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Original file line numberDiff line numberDiff line change
@@ -1,14 +1,14 @@
/*
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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
Expand All@@ -23,13 +23,13 @@
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.nio.charset.StandardCharsets;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;

import org.apache.commons.codec.binary.Base64;
import org.apache.hadoop.conf.Configuration;

import org.apache.parquet.Closeables;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

Expand All@@ -53,22 +53,13 @@ private SerializationUtil() { }
* @throws IOException if there is an error while writing
*/
public static void writeObjectToConfAsBase64(String key, Object obj, Configuration conf) throws IOException {
ByteArrayOutputStream baos = null;
GZIPOutputStream gos = null;
ObjectOutputStream oos = null;

try {
baos = new ByteArrayOutputStream();
gos = new GZIPOutputStream(baos);
oos = new ObjectOutputStream(gos);
oos.writeObject(obj);
} finally {
Closeables.close(oos);
Closeables.close(gos);
Closeables.close(baos);
try(ByteArrayOutputStream baos = new ByteArrayOutputStream()) {

@ryanruppryanruppJan 21, 2019

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You can consolidate these into a single try e.g.:

try (ByteArrayOutputStream baos = new ByteArrayOutputStream();
GZIPOutputStream gos = new GZIPOutputStream(baos);
ObjectOutputStream oos = new ObjectOutputStream(gos)) {
oos.writeObject(obj);
conf.set(key, new String(Base64.encodeBase64(baos.toByteArray()), "UTF-8"));
}

@FokkoFokkoJan 21, 2019

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Sweet suggestion, thanks!

try(GZIPOutputStream gos = new GZIPOutputStream(baos);
ObjectOutputStream oos = new ObjectOutputStream(gos)) {
oos.writeObject(obj);
}
conf.set(key, new String(Base64.encodeBase64(baos.toByteArray()), StandardCharsets.UTF_8));
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gszadovszky marked this conversation as resolved.
}

conf.set(key, new String(Base64.encodeBase64(baos.toByteArray()), "UTF-8"));
}

/**
Expand All@@ -88,25 +79,16 @@ public static <T> T readObjectFromConfAsBase64(String key, Configuration conf) t
return null;
}

byte[] bytes = Base64.decodeBase64(b64.getBytes("UTF-8"));

ByteArrayInputStream bais = null;
GZIPInputStream gis = null;
ObjectInputStream ois = null;
byte[] bytes = Base64.decodeBase64(b64.getBytes(StandardCharsets.UTF_8));

try {
bais = new ByteArrayInputStream(bytes);
gis = new GZIPInputStream(bais);
ois = new ObjectInputStream(gis);
try (ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
GZIPInputStream gis = new GZIPInputStream(bais);
ObjectInputStream ois = new ObjectInputStream(gis)) {
return (T) ois.readObject();
} catch (ClassNotFoundException e) {
throw new IOException("Could not read object from config with key " + key, e);
} catch (ClassCastException e) {
throw new IOException("Couldn't cast object read from config with key " + key, e);
} finally {
Closeables.close(ois);
Closeables.close(gis);
Closeables.close(bais);
}
}
}