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feat(engine): Introduce operation log for sync message correlations
Related to #3900
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74 changes: 74 additions & 0 deletions
74
...c/main/java/org/camunda/bpm/engine/impl/history/MultiSynchronousOperationLogProducer.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| /* | ||
| * Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH | ||
| * under one or more contributor license agreements. See the NOTICE file | ||
| * distributed with this work for additional information regarding copyright | ||
| * ownership. Camunda licenses this file to you under the Apache License, | ||
| * Version 2.0; 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. | ||
| */ | ||
| package org.camunda.bpm.engine.impl.history; | ||
|
|
||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Map.Entry; | ||
| import org.camunda.bpm.engine.ProcessEngineException; | ||
| import org.camunda.bpm.engine.impl.interceptor.CommandContext; | ||
| import org.camunda.bpm.engine.impl.persistence.entity.PropertyChange; | ||
|
|
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| public interface MultiSynchronousOperationLogProducer<T> { | ||
|
|
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| public static Long SUMMARY_LOG = 1L; | ||
| public static Long UNLIMITED_LOG = -1L; | ||
|
|
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| /** | ||
| * Returns a map containing a list of changed properties for every result of the operation. | ||
| * Used to produce an operation log entry per entry contained in the returned map. | ||
| */ | ||
| Map<T, List<PropertyChange>> getPropChangesForOperation(List<T> results); | ||
|
|
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| /** | ||
| * Returns a list of changed properties summarizing the whole operation involving multiple entities. | ||
| */ | ||
| List<PropertyChange> getSummarizingPropChangesForOperation(List<T> results); | ||
|
|
||
| /** | ||
| * Calls the code that produces the operation log. Usually <code>commandContext.getOperationLogManager().log...</code> | ||
| */ | ||
| void createOperationLogEntry(CommandContext commandContext, T result, List<PropertyChange> propChanges); | ||
|
|
||
| /** | ||
| * The implementing command can call this method to produce the operation log entries for the current operation. | ||
| */ | ||
| default void produceOperationLog(CommandContext commandContext, List<T> results) { | ||
| if(results == null || results.isEmpty()) { | ||
| return; | ||
| } | ||
| Map<T, List<PropertyChange>> propChangesForOperation = getPropChangesForOperation(results); | ||
|
|
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| Long logEntriesPerSyncOperationLimit = commandContext.getProcessEngineConfiguration() | ||
| .getLogEntriesPerSyncOperationLimit(); | ||
| if(logEntriesPerSyncOperationLimit == SUMMARY_LOG && results.size() > 1) { | ||
| // use first result as representative for summarized operation log entry | ||
| createOperationLogEntry(commandContext, results.get(0), getSummarizingPropChangesForOperation(results)); | ||
| } else { | ||
| if (logEntriesPerSyncOperationLimit != UNLIMITED_LOG && logEntriesPerSyncOperationLimit < propChangesForOperation.size()) { | ||
| throw new ProcessEngineException( | ||
| "Maximum number of operation log entries for operation type synchronous APIs reached. Configured limit is " | ||
| + logEntriesPerSyncOperationLimit + " but " + propChangesForOperation.size() + " entities were affected by API call."); | ||
| } else { | ||
| // produce one operation log per affected entity | ||
| for (Entry<T, List<PropertyChange>> propChanges : propChangesForOperation.entrySet()) { | ||
| createOperationLogEntry(commandContext, propChanges.getKey(), propChanges.getValue()); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } |
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