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Rate Limiter integration for remote transfer
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51
server/src/main/java/org/opensearch/common/StreamLimiter.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| /* | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * | ||
| * The OpenSearch Contributors require contributions made to | ||
| * this file be licensed under the Apache-2.0 license or a | ||
| * compatible open source license. | ||
| */ | ||
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| package org.opensearch.common; | ||
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| import org.apache.lucene.store.RateLimiter; | ||
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| import java.io.IOException; | ||
| import java.util.function.Supplier; | ||
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| public class StreamLimiter { | ||
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| private final Supplier<RateLimiter> rateLimiterSupplier; | ||
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| private final StreamLimiter.Listener listener; | ||
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| private int bytesSinceLastRateLimit; | ||
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| public StreamLimiter(Supplier<RateLimiter> rateLimiterSupplier, Listener listener) { | ||
| this.rateLimiterSupplier = rateLimiterSupplier; | ||
| this.listener = listener; | ||
| } | ||
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| public void maybePause(int bytes) throws IOException { | ||
| bytesSinceLastRateLimit += bytes; | ||
| final RateLimiter rateLimiter = rateLimiterSupplier.get(); | ||
| if (rateLimiter != null) { | ||
| if (bytesSinceLastRateLimit >= rateLimiter.getMinPauseCheckBytes()) { | ||
| long pause = rateLimiter.pause(bytesSinceLastRateLimit); | ||
| bytesSinceLastRateLimit = 0; | ||
| if (pause > 0) { | ||
| listener.onPause(pause); | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| /** | ||
| * Internal listener | ||
| * | ||
| * @opensearch.internal | ||
| */ | ||
| public interface Listener { | ||
| void onPause(long nanos); | ||
| } | ||
| } |
72 changes: 72 additions & 0 deletions
72
...a/org/opensearch/common/blobstore/transfer/stream/RateLimitingOffsetRangeInputStream.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| /* | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| * | ||
| * The OpenSearch Contributors require contributions made to | ||
| * this file be licensed under the Apache-2.0 license or a | ||
| * compatible open source license. | ||
| */ | ||
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| package org.opensearch.common.blobstore.transfer.stream; | ||
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| import org.apache.lucene.store.RateLimiter; | ||
| import org.opensearch.common.StreamLimiter; | ||
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| import java.io.IOException; | ||
| import java.util.function.Supplier; | ||
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| public class RateLimitingOffsetRangeInputStream extends OffsetRangeInputStream { | ||
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| private StreamLimiter streamLimiter; | ||
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| private OffsetRangeInputStream delegate; | ||
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| public RateLimitingOffsetRangeInputStream( | ||
| OffsetRangeInputStream delegate, | ||
| Supplier<RateLimiter> rateLimiterSupplier, | ||
| StreamLimiter.Listener listener | ||
| ) { | ||
| this.streamLimiter = new StreamLimiter(rateLimiterSupplier, listener); | ||
| this.delegate = delegate; | ||
| } | ||
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| @Override | ||
| public int read() throws IOException { | ||
| int b = delegate.read(); | ||
| streamLimiter.maybePause(1); | ||
| return b; | ||
| } | ||
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| @Override | ||
| public int read(byte[] b, int off, int len) throws IOException { | ||
| int n = delegate.read(b, off, len); | ||
| if (n > 0) { | ||
| streamLimiter.maybePause(n); | ||
| } | ||
| return n; | ||
| } | ||
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| @Override | ||
| public synchronized void mark(int readlimit) { | ||
| delegate.mark(readlimit); | ||
| } | ||
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| @Override | ||
| public boolean markSupported() { | ||
| return delegate.markSupported(); | ||
| } | ||
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| @Override | ||
| public long getFilePointer() throws IOException { | ||
| return delegate.getFilePointer(); | ||
| } | ||
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| @Override | ||
| public synchronized void reset() throws IOException { | ||
| delegate.reset(); | ||
| } | ||
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| @Override | ||
| public void close() throws IOException { | ||
| delegate.close(); | ||
| } | ||
| } |
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