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fix: abstract batch resource and add method to determine if batch sho…
…uld be flushed (#1790)
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56 changes: 56 additions & 0 deletions
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gax-java/gax/src/main/java/com/google/api/gax/batching/BatchResource.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| /* | ||
| * Copyright 2023 Google LLC | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, are permitted provided that the following conditions are | ||
| * met: | ||
| * | ||
| * * Redistributions of source code must retain the above copyright | ||
| * notice, this list of conditions and the following disclaimer. | ||
| * * Redistributions in binary form must reproduce the above | ||
| * copyright notice, this list of conditions and the following disclaimer | ||
| * in the documentation and/or other materials provided with the | ||
| * distribution. | ||
| * * Neither the name of Google LLC nor the names of its | ||
| * contributors may be used to endorse or promote products derived from | ||
| * this software without specific prior written permission. | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | ||
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | ||
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| */ | ||
| package com.google.api.gax.batching; | ||
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| import com.google.api.core.InternalApi; | ||
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| /** | ||
| * Represent the resource used by a batch including element and byte. It can also be extended to | ||
| * other things to determine if adding a new element needs to be flow controlled or if the current | ||
| * batch needs to be flushed. | ||
| */ | ||
| @InternalApi("For google-cloud-java client use only.") | ||
| public interface BatchResource { | ||
|
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| /** Adds the additional resource. */ | ||
| BatchResource add(BatchResource resource); | ||
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| /** Returns the element count of this resource. */ | ||
| long getElementCount(); | ||
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| /** Returns the byte count of this resource. */ | ||
| long getByteCount(); | ||
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| /** | ||
| * Checks if the current {@link BatchResource} should be flushed based on the maxElementThreshold | ||
| * and maxBytesThreshold. | ||
| */ | ||
| boolean shouldFlush(long maxElementThreshold, long maxBytesThreshold); | ||
| } |
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76 changes: 76 additions & 0 deletions
76
gax-java/gax/src/main/java/com/google/api/gax/batching/DefaultBatchResource.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| /* | ||
| * Copyright 2023 Google LLC | ||
| * | ||
| * Redistribution and use in source and binary forms, with or without | ||
| * modification, are permitted provided that the following conditions are | ||
| * met: | ||
| * | ||
| * * Redistributions of source code must retain the above copyright | ||
| * notice, this list of conditions and the following disclaimer. | ||
| * * Redistributions in binary form must reproduce the above | ||
| * copyright notice, this list of conditions and the following disclaimer | ||
| * in the documentation and/or other materials provided with the | ||
| * distribution. | ||
| * * Neither the name of Google LLC nor the names of its | ||
| * contributors may be used to endorse or promote products derived from | ||
| * this software without specific prior written permission. | ||
| * | ||
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | ||
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | ||
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | ||
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | ||
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | ||
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | ||
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
| */ | ||
| package com.google.api.gax.batching; | ||
|
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| import com.google.auto.value.AutoValue; | ||
| import com.google.common.base.Preconditions; | ||
|
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| /** | ||
| * The default implementation of {@link BatchResource} which tracks the elementCount and byteCount. | ||
| */ | ||
| @AutoValue | ||
| abstract class DefaultBatchResource implements BatchResource { | ||
|
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| static DefaultBatchResource.Builder builder() { | ||
| return new AutoValue_DefaultBatchResource.Builder(); | ||
| } | ||
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| @Override | ||
| public BatchResource add(BatchResource resource) { | ||
| Preconditions.checkArgument( | ||
| resource instanceof DefaultBatchResource, | ||
| "Expect an instance of DefaultBatchResource, got " + resource.getClass()); | ||
| DefaultBatchResource defaultResource = (DefaultBatchResource) resource; | ||
| return new AutoValue_DefaultBatchResource.Builder() | ||
| .setElementCount(getElementCount() + defaultResource.getElementCount()) | ||
| .setByteCount(getByteCount() + defaultResource.getByteCount()) | ||
| .build(); | ||
| } | ||
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| @Override | ||
| public abstract long getElementCount(); | ||
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| @Override | ||
| public abstract long getByteCount(); | ||
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| @Override | ||
| public boolean shouldFlush(long maxElementThreshold, long maxBytesThreshold) { | ||
| return getElementCount() > maxElementThreshold || getByteCount() > maxBytesThreshold; | ||
| } | ||
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| @AutoValue.Builder | ||
| abstract static class Builder { | ||
| abstract Builder setElementCount(long elementCount); | ||
|
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| abstract Builder setByteCount(long byteCount); | ||
|
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| abstract DefaultBatchResource build(); | ||
| } | ||
| } |
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