Limit size of shardDeleteResults #133558
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| /* | ||
| * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one | ||
| * or more contributor license agreements. Licensed under the "Elastic License | ||
| * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side | ||
| * Public License v 1"; you may not use this file except in compliance with, at | ||
| * your election, the "Elastic License 2.0", the "GNU Affero General Public | ||
| * License v3.0 only", or the "Server Side Public License, v 1". | ||
| */ | ||
|
|
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| package org.elasticsearch.common.io.stream; | ||
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| import java.io.FilterOutputStream; | ||
| import java.io.IOException; | ||
| import java.io.OutputStream; | ||
| import java.util.function.IntSupplier; | ||
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| /** | ||
| * Truncates writes once the max size is exceeded. | ||
| * However, when writing byte arrays, the stream does not check whether there is capacity for the full | ||
| * array prior to writing, so there is overspill of up to b.length - 1. | ||
| */ | ||
| public class TruncatedOutputStream extends FilterOutputStream { | ||
| private final IntSupplier currentSizeSupplier; | ||
| private final int maxSize; | ||
| private boolean hasCapacity = true; | ||
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| public TruncatedOutputStream(OutputStream out, IntSupplier currentSizeSupplier, int maxSize) { | ||
| super(out); | ||
| this.currentSizeSupplier = currentSizeSupplier; | ||
| this.maxSize = maxSize; | ||
| } | ||
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| private boolean hasCapacity() { | ||
| if (hasCapacity) { | ||
| hasCapacity = currentSizeSupplier.getAsInt() < maxSize; | ||
| } | ||
| return hasCapacity; | ||
| } | ||
|
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| @Override | ||
| public void write(int b) throws IOException { | ||
| if (hasCapacity()) { | ||
| out.write(b); | ||
| } | ||
| } | ||
|
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| @Override | ||
| public void write(byte[] b) throws IOException { | ||
| if (hasCapacity()) { | ||
| out.write(b); | ||
| } | ||
| } | ||
|
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| @Override | ||
| public void write(byte[] b, int off, int len) throws IOException { | ||
| if (hasCapacity()) { | ||
| out.write(b, off, len); | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| /* | ||
| * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one | ||
| * or more contributor license agreements. Licensed under the "Elastic License | ||
| * 2.0", the "GNU Affero General Public License v3.0 only", and the "Server Side | ||
| * Public License v 1"; you may not use this file except in compliance with, at | ||
| * your election, the "Elastic License 2.0", the "GNU Affero General Public | ||
| * License v3.0 only", or the "Server Side Public License, v 1". | ||
| */ | ||
|
|
||
| package org.elasticsearch.common.io.stream; | ||
|
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| import org.elasticsearch.test.ESTestCase; | ||
|
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| import java.io.ByteArrayOutputStream; | ||
| import java.io.IOException; | ||
| import java.util.ArrayList; | ||
| import java.util.List; | ||
|
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| public class TruncatedOutputStreamTests extends ESTestCase { | ||
|
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| public void testWriteSingleBytes() throws IOException { | ||
| ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(); | ||
| int maxSize = randomIntBetween(0, 100); | ||
| TruncatedOutputStream truncatedOutputStream = new TruncatedOutputStream( | ||
| byteArrayOutputStream, | ||
| byteArrayOutputStream::size, | ||
| maxSize | ||
| ); | ||
|
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| byte[] values = new byte[maxSize]; | ||
|
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| // Write enough bytes within the defined maxSize | ||
| for (int i = 0; i < maxSize; i++) { | ||
| byte b = randomByte(); | ||
| truncatedOutputStream.write(b); | ||
| values[i] = b; | ||
| } | ||
|
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| // The stream should be truncated now that it is filled | ||
| for (int i = 0; i < randomIntBetween(0, 20); i++) { | ||
| truncatedOutputStream.write(randomByte()); | ||
| } | ||
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| assertArrayEquals(values, byteArrayOutputStream.toByteArray()); | ||
| } | ||
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| public void testWriteByteArray() throws IOException { | ||
| ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(); | ||
| int maxSize = randomIntBetween(100, 200); | ||
| TruncatedOutputStream truncatedOutputStream = new TruncatedOutputStream( | ||
| byteArrayOutputStream, | ||
| byteArrayOutputStream::size, | ||
| maxSize | ||
| ); | ||
|
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| List<Byte> values = new ArrayList<>(); | ||
| int bytesWritten = 0; | ||
| // Write beyond the streams capacity | ||
| while (bytesWritten <= maxSize * 2) { | ||
| byte[] bytes = randomByteArrayOfLength(randomIntBetween(0, 20)); | ||
| truncatedOutputStream.write(bytes); | ||
|
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| // If there was capacity before writing, then the stream wrote the entire array | ||
| // even if that meant overflowing | ||
| if (bytesWritten < maxSize) { | ||
| for (byte b : bytes) { | ||
| values.add(b); | ||
| } | ||
| } | ||
|
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| bytesWritten += bytes.length; | ||
| } | ||
|
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| byte[] valuesAsByteArray = new byte[values.size()]; | ||
| int i = 0; | ||
| for (byte b : values) { | ||
| valuesAsByteArray[i] = b; | ||
| i++; | ||
| } | ||
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| assertArrayEquals(valuesAsByteArray, byteArrayOutputStream.toByteArray()); | ||
| } | ||
|
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| public void testWriteByteArrayWithOffsetAndLength() throws IOException { | ||
| ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(); | ||
| int maxSize = randomIntBetween(100, 200); | ||
| TruncatedOutputStream truncatedOutputStream = new TruncatedOutputStream( | ||
| byteArrayOutputStream, | ||
| byteArrayOutputStream::size, | ||
| maxSize | ||
| ); | ||
|
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| List<Byte> values = new ArrayList<>(); | ||
| int bytesWritten = 0; | ||
| // Write beyond the streams capacity | ||
| while (bytesWritten <= maxSize * 2) { | ||
| byte[] bytes = randomByteArrayOfLength(randomIntBetween(0, 20)); | ||
| int offset = randomIntBetween(0, bytes.length); | ||
| int length = randomIntBetween(0, bytes.length - offset); | ||
| truncatedOutputStream.write(bytes, offset, length); | ||
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| // If there was capacity before writing, then the stream wrote the sub array | ||
| // even if that meant overflowing | ||
| if (bytesWritten < maxSize) { | ||
| for (int i = offset; i < offset + length; i++) { | ||
| values.add(bytes[i]); | ||
| } | ||
| } | ||
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| bytesWritten += length; | ||
| } | ||
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| byte[] valuesAsByteArray = new byte[values.size()]; | ||
| int i = 0; | ||
| for (byte b : values) { | ||
| valuesAsByteArray[i] = b; | ||
| i++; | ||
| } | ||
|
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| assertArrayEquals(valuesAsByteArray, byteArrayOutputStream.toByteArray()); | ||
| } | ||
| } |
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