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turned out to be quite complicated to fix.. handle transitions has a set of deltas but issues was to generate the correct delta in the first place!
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110 changes: 110 additions & 0 deletions
110
...n-engine/src/main/java/org/linkedin/glu/orchestration/engine/delta/impl/DeltaBuilder.java
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| /* | ||
| * Copyright (c) 2011 Yan Pujante | ||
| * | ||
| * 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 org.linkedin.glu.orchestration.engine.delta.impl; | ||
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| import org.linkedin.glu.provisioner.core.model.SystemFilter; | ||
| import org.linkedin.glu.provisioner.core.model.SystemModel; | ||
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| import java.util.HashSet; | ||
| import java.util.Set; | ||
|
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| /** | ||
| * @author yan@pongasoft.com | ||
| */ | ||
| public class DeltaBuilder | ||
| { | ||
| protected final SystemModel _filteredExpectedModel; | ||
| protected final SystemModel _filteredCurrentModel; | ||
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| private Set<String> _filteredKeys; | ||
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| /** | ||
| * Constructor | ||
| */ | ||
| public DeltaBuilder(SystemModel filteredExpectedModel, | ||
| SystemModel filteredCurrentModel) | ||
| { | ||
| _filteredExpectedModel = filteredExpectedModel; | ||
| _filteredCurrentModel = filteredCurrentModel; | ||
| } | ||
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| public SystemModel getFilteredCurrentModel() | ||
| { | ||
| return _filteredCurrentModel; | ||
| } | ||
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| public SystemModel getFilteredExpectedModel() | ||
| { | ||
| return _filteredExpectedModel; | ||
| } | ||
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| public Set<String> getFilteredKeys() | ||
| { | ||
| if(_filteredKeys == null) | ||
| _filteredKeys = computeFilteredKeys(_filteredExpectedModel, _filteredCurrentModel); | ||
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| return _filteredKeys; | ||
| } | ||
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| public void setFilteredKeys(Set<String> filteredKeys) | ||
| { | ||
| _filteredKeys = filteredKeys; | ||
| } | ||
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| /** | ||
| * Compute the set of keys that will be part of the delta: the filters set on the model will | ||
| * be used as filter | ||
| */ | ||
| public static Set<String> computeFilteredKeys(SystemModel filteredExpectedModel, | ||
| SystemModel filteredCurrentModel) | ||
| { | ||
| Set<String> keys = new HashSet<String>(); | ||
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| SystemFilter currentModelFilters = filteredCurrentModel.getFilters(); | ||
| SystemFilter expectedModelFilters = filteredExpectedModel.getFilters(); | ||
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| // 1. we make sure to exclude all entries from the current model where that were filtered | ||
| // out from the expected model | ||
| filteredCurrentModel = filteredCurrentModel.filterBy(expectedModelFilters); | ||
| Set<String> currentKeys = filteredCurrentModel.getKeys(new HashSet<String>()); | ||
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| // 2. we make sure to exclude all entries from the expected model where that were filtered | ||
| // out from the current model | ||
| filteredExpectedModel = filteredExpectedModel.filterBy(currentModelFilters); | ||
| Set<String> expectedKeys = filteredExpectedModel.getKeys(new HashSet<String>()); | ||
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| // if a filter was provided for the current model then we take only the keys from the | ||
| // current model (excluding the one not in the expected model!) | ||
| if(currentModelFilters != null) | ||
| { | ||
| for(String key : currentKeys) | ||
| { | ||
| if(expectedKeys.contains(key)) | ||
| keys.add(key); | ||
| } | ||
| } | ||
| else | ||
| { | ||
| // otherwise we take keys from both | ||
| keys.addAll(currentKeys); | ||
| keys.addAll(expectedKeys); | ||
| } | ||
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| return keys; | ||
| } | ||
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| } |
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