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2 changes: 1 addition & 1 deletion
2
atlasdb-workload-server-antithesis/var/flush.sh
100644 → 100755
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,4 +1,4 @@ | ||
| #!/bin/bash | ||
| #!/usr/bin/env bash | ||
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| ## | ||
| # (c) Copyright 2023 Palantir Technologies Inc. All rights reserved. | ||
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47 changes: 47 additions & 0 deletions
47
...java/com/palantir/atlasdb/workload/workflow/WriteOnceDeleteOnceWorkflowConfiguration.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,47 @@ | ||
| /* | ||
| * (c) Copyright 2023 Palantir Technologies Inc. All rights reserved. | ||
| * | ||
| * Licensed 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 KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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| package com.palantir.atlasdb.workload.workflow; | ||
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| import com.fasterxml.jackson.annotation.JsonTypeName; | ||
| import com.fasterxml.jackson.databind.annotation.JsonDeserialize; | ||
| import com.fasterxml.jackson.databind.annotation.JsonSerialize; | ||
| import com.google.common.util.concurrent.RateLimiter; | ||
| import org.immutables.value.Value; | ||
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| @Value.Immutable | ||
| @JsonSerialize(as = ImmutableWriteOnceDeleteOnceWorkflowConfiguration.class) | ||
| @JsonDeserialize(as = ImmutableWriteOnceDeleteOnceWorkflowConfiguration.class) | ||
| @JsonTypeName(WriteOnceDeleteOnceWorkflowConfiguration.TYPE) | ||
| public interface WriteOnceDeleteOnceWorkflowConfiguration extends WorkflowConfiguration { | ||
| String TYPE = "write-once-delete-once"; | ||
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| TableConfiguration tableConfiguration(); | ||
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| /** | ||
| * The maximum value (exclusive) for the row key. | ||
| * This is half the iteration count, so we ideally perform two actions per cell. | ||
| */ | ||
| @Value.Derived | ||
| default Integer maxKey() { | ||
| return iterationCount() / 2; | ||
| } | ||
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| @Value.Lazy | ||
| default RateLimiter transactionRateLimiter() { | ||
| return RateLimiter.create(rateLimit()); | ||
| } | ||
| } |
106 changes: 106 additions & 0 deletions
106
...er/src/main/java/com/palantir/atlasdb/workload/workflow/WriteOnceDeleteOnceWorkflows.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,106 @@ | ||
| /* | ||
| * (c) Copyright 2023 Palantir Technologies Inc. All rights reserved. | ||
| * | ||
| * Licensed 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 KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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| package com.palantir.atlasdb.workload.workflow; | ||
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| import com.google.common.annotations.VisibleForTesting; | ||
| import com.google.common.util.concurrent.ListeningExecutorService; | ||
| import com.palantir.atlasdb.buggify.api.BuggifyFactory; | ||
| import com.palantir.atlasdb.buggify.impl.DefaultBuggifyFactory; | ||
| import com.palantir.atlasdb.buggify.impl.DefaultNativeSamplingSecureRandomFactory; | ||
| import com.palantir.atlasdb.workload.store.ImmutableWorkloadCell; | ||
| import com.palantir.atlasdb.workload.store.InteractiveTransactionStore; | ||
| import com.palantir.atlasdb.workload.store.WorkloadCell; | ||
| import com.palantir.atlasdb.workload.transaction.witnessed.WitnessedTransaction; | ||
| import java.security.SecureRandom; | ||
| import java.util.Optional; | ||
| import java.util.function.IntFunction; | ||
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| /** | ||
| * The idea of this class is to catch bugs around tombstone drops, by having a | ||
| * workflow which _mostly_ writes once first and then on deletes once for a given cell. | ||
| * Probability and randomness are used to enforce this behaviour, thus it's possible to have a write without a | ||
| * delete, or visa versa; some cells may randomly be written or deleted multiple times as well. | ||
| */ | ||
| public final class WriteOnceDeleteOnceWorkflows { | ||
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| private static final SecureRandom RANDOM = DefaultNativeSamplingSecureRandomFactory.INSTANCE.create(); | ||
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| private static final Integer COLUMN = 0; | ||
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| private WriteOnceDeleteOnceWorkflows() { | ||
| // Utility class | ||
| } | ||
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| public static Workflow create( | ||
| InteractiveTransactionStore store, | ||
| WriteOnceDeleteOnceWorkflowConfiguration configuration, | ||
| ListeningExecutorService executionExecutor) { | ||
| return create(store, configuration, executionExecutor, DefaultBuggifyFactory.INSTANCE, RANDOM::nextInt); | ||
| } | ||
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| @VisibleForTesting | ||
| static Workflow create( | ||
| InteractiveTransactionStore store, | ||
| WriteOnceDeleteOnceWorkflowConfiguration configuration, | ||
| ListeningExecutorService executionExecutor, | ||
| BuggifyFactory buggifyFactory, | ||
| IntFunction<Integer> randomNumberGenerator) { | ||
| WriteOnceDeleteOnceWorkflow workflow = | ||
| new WriteOnceDeleteOnceWorkflow(buggifyFactory, randomNumberGenerator, configuration); | ||
| return DefaultWorkflow.create(store, workflow::run, configuration, executionExecutor); | ||
| } | ||
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| private static class WriteOnceDeleteOnceWorkflow { | ||
| private final BuggifyFactory buggifyFactory; | ||
| private final IntFunction<Integer> rowKeyGenerator; | ||
| private final WriteOnceDeleteOnceWorkflowConfiguration configuration; | ||
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| public WriteOnceDeleteOnceWorkflow( | ||
| BuggifyFactory buggifyFactory, | ||
| IntFunction<Integer> rowKeyGenerator, | ||
| WriteOnceDeleteOnceWorkflowConfiguration configuration) { | ||
| this.buggifyFactory = buggifyFactory; | ||
| this.rowKeyGenerator = rowKeyGenerator; | ||
| this.configuration = configuration; | ||
| } | ||
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| public Optional<WitnessedTransaction> run(InteractiveTransactionStore store, Integer taskIndex) { | ||
| configuration.transactionRateLimiter().acquire(); | ||
| return store.readWrite(txn -> { | ||
| Integer rowKey = rowKeyGenerator.apply(configuration.maxKey()); | ||
| if (buggifyFactory | ||
| .maybe(calculateChanceForDelete(taskIndex, configuration.iterationCount())) | ||
| .asBoolean()) { | ||
| txn.delete(configuration.tableConfiguration().tableName(), cell(rowKey)); | ||
| } else { | ||
| txn.write(configuration.tableConfiguration().tableName(), cell(rowKey), RANDOM.nextInt(10000)); | ||
| } | ||
| }); | ||
| } | ||
| } | ||
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| @VisibleForTesting | ||
| static Double calculateChanceForDelete(Integer taskIndex, Integer iterationCount) { | ||
| // Index generation is [inclusive, exclusive], so we need to add 1 to the task index. | ||
| return (taskIndex + 1.0) / iterationCount; | ||
| } | ||
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| @VisibleForTesting | ||
| static WorkloadCell cell(Integer index) { | ||
| return ImmutableWorkloadCell.of(index, COLUMN); | ||
| } | ||
| } |
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