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| 1 | +package com.algolia.codegen.utils; |
| 2 | + |
| 3 | +import java.io.File; |
| 4 | +import java.util.*; |
| 5 | +import org.openapitools.codegen.*; |
| 6 | +import org.openapitools.codegen.model.ModelMap; |
| 7 | +import org.openapitools.codegen.model.OperationsMap; |
| 8 | + |
| 9 | +public class ModelPruner { |
| 10 | + |
| 11 | + private static Set<String> primitiveModels = new HashSet<>(Arrays.asList("object", "array", "string", "boolean", "integer")); |
| 12 | + |
| 13 | + private Map<String, CodegenModel> models; |
| 14 | + private Set<String> visitedModels; |
| 15 | + |
| 16 | + private ModelPruner(Map<String, CodegenModel> models) { |
| 17 | + this.visitedModels = new TreeSet<>(String.CASE_INSENSITIVE_ORDER); |
| 18 | + this.models = models; |
| 19 | + } |
| 20 | + |
| 21 | + private CodegenModel getModel(String name) { |
| 22 | + name = name.replace("?", ""); |
| 23 | + // openapi generator returns some weird error when looking for primitive type, so we filter them |
| 24 | + // by hand |
| 25 | + if (primitiveModels.contains(name)) { |
| 26 | + return null; |
| 27 | + } |
| 28 | + |
| 29 | + return models.get(name); |
| 30 | + } |
| 31 | + |
| 32 | + private CodegenModel propertyToModel(CodegenProperty prop) { |
| 33 | + return prop == null ? null : getModel(prop.openApiType); |
| 34 | + } |
| 35 | + |
| 36 | + private void exploreProperties(CodegenModel model, List<CodegenProperty> properties) { |
| 37 | + for (CodegenProperty property : properties) { |
| 38 | + CodegenModel propModel = propertyToModel(property); |
| 39 | + if (propModel != null && !visitedModels.contains(propModel.name)) { |
| 40 | + visitedModels.add(property.openApiType); |
| 41 | + visitedModels.add(propModel.name); |
| 42 | + visitModelRecursive(propModel); |
| 43 | + } |
| 44 | + CodegenModel itemsModel = propertyToModel(property.mostInnerItems); |
| 45 | + if (itemsModel != null && !visitedModels.contains(itemsModel.name)) { |
| 46 | + // In csharp the real model name varies if its part of the modelMapping so we have to add |
| 47 | + // both |
| 48 | + visitedModels.add(property.mostInnerItems.openApiType); |
| 49 | + visitedModels.add(itemsModel.name); |
| 50 | + visitModelRecursive(itemsModel); |
| 51 | + } |
| 52 | + } |
| 53 | + } |
| 54 | + |
| 55 | + private void visitModelRecursive(CodegenModel model) { |
| 56 | + exploreProperties(model, model.getVars()); |
| 57 | + if (model.getComposedSchemas() != null && model.getComposedSchemas().getOneOf() != null) { |
| 58 | + exploreProperties(model, model.getComposedSchemas().getOneOf()); |
| 59 | + } |
| 60 | + } |
| 61 | + |
| 62 | + private static Map<String, CodegenModel> convertToMap(CodegenConfig config, List<ModelMap> models) { |
| 63 | + Map<String, CodegenModel> modelsMap = new TreeMap<>(String.CASE_INSENSITIVE_ORDER); |
| 64 | + for (ModelMap modelMap : models) { |
| 65 | + CodegenModel model = modelMap.getModel(); |
| 66 | + |
| 67 | + modelsMap.put(config.toModelName(model.name), model); |
| 68 | + } |
| 69 | + return modelsMap; |
| 70 | + } |
| 71 | + |
| 72 | + private void exploreGraph(OperationsMap operations) { |
| 73 | + for (CodegenModel model : models.values()) { |
| 74 | + visitModelRecursive(model); |
| 75 | + } |
| 76 | + |
| 77 | + for (CodegenOperation ope : operations.getOperations().getOperation()) { |
| 78 | + if (ope.returnType != null) { |
| 79 | + CodegenModel returnType = getModel(ope.returnBaseType); |
| 80 | + if (returnType != null) { |
| 81 | + visitedModels.add(returnType.name); |
| 82 | + } |
| 83 | + } |
| 84 | + for (CodegenParameter param : ope.allParams) { |
| 85 | + CodegenModel paramType = getModel(param.baseType != null ? param.baseType : param.dataType); |
| 86 | + if (paramType != null) { |
| 87 | + visitedModels.add(paramType.name); |
| 88 | + } |
| 89 | + CodegenModel itemsModel = propertyToModel(param.mostInnerItems); |
| 90 | + if (itemsModel != null) { |
| 91 | + visitedModels.add(itemsModel.name); |
| 92 | + } |
| 93 | + } |
| 94 | + } |
| 95 | + } |
| 96 | + |
| 97 | + /** remove all the unused models, most likely the sub models of allOf */ |
| 98 | + public static void removeOrphans(CodegenConfig config, OperationsMap operations, List<ModelMap> allModels, boolean keepError) { |
| 99 | + // visit all the models that are accessible from: |
| 100 | + // - the properties of a model (needs recursive search) |
| 101 | + // - the return type of an operation |
| 102 | + // - the parameters of an operation |
| 103 | + |
| 104 | + ModelPruner modelPruner = new ModelPruner(convertToMap(config, allModels)); |
| 105 | + Helpers.prettyPrint(modelPruner.models.keySet()); |
| 106 | + modelPruner.exploreGraph(operations); |
| 107 | + |
| 108 | + List<String> toRemove = new ArrayList<>(); |
| 109 | + for (String modelName : modelPruner.models.keySet()) { |
| 110 | + if (keepError && modelName.equals("ErrorBase")) { |
| 111 | + continue; |
| 112 | + } |
| 113 | + if (!modelPruner.visitedModels.contains(modelName)) { |
| 114 | + toRemove.add(modelName); |
| 115 | + } |
| 116 | + } |
| 117 | + |
| 118 | + String templateName = config.modelTemplateFiles().keySet().iterator().next(); |
| 119 | + |
| 120 | + for (String modelName : toRemove) { |
| 121 | + String filename = config.modelFilename(templateName, modelName); |
| 122 | + File file = new File(filename); |
| 123 | + if (file.exists()) { |
| 124 | + file.delete(); |
| 125 | + } |
| 126 | + } |
| 127 | + } |
| 128 | + |
| 129 | + public static void removeOrphans(CodegenConfig config, OperationsMap operations, List<ModelMap> allModels) { |
| 130 | + removeOrphans(config, operations, allModels, false); |
| 131 | + } |
| 132 | +} |
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