2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
9 package org.opendaylight.yangtools.yang.model.util;
11 import com.google.common.base.Preconditions;
12 import com.google.common.base.Strings;
13 import com.google.common.collect.Collections2;
14 import com.google.common.collect.ImmutableMap;
15 import com.google.common.collect.ImmutableSet;
16 import com.google.common.collect.ImmutableSet.Builder;
17 import com.google.common.collect.ImmutableSetMultimap;
18 import com.google.common.collect.Lists;
19 import com.google.common.collect.Maps;
20 import com.google.common.collect.Multimap;
21 import com.google.common.collect.Multimaps;
22 import com.google.common.collect.SetMultimap;
23 import com.google.common.collect.TreeMultimap;
25 import java.util.ArrayList;
26 import java.util.Collection;
27 import java.util.Collections;
28 import java.util.List;
30 import java.util.Optional;
32 import java.util.TreeMap;
33 import java.util.function.Function;
34 import javax.annotation.concurrent.Immutable;
35 import org.opendaylight.yangtools.yang.common.QNameModule;
36 import org.opendaylight.yangtools.yang.common.Revision;
37 import org.opendaylight.yangtools.yang.model.api.Module;
38 import org.opendaylight.yangtools.yang.model.api.ModuleImport;
39 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
42 public final class FilteringSchemaContextProxy extends AbstractSchemaContext {
43 private final Map<QNameModule, Module> moduleMap;
45 //collection to be filled with filtered modules
46 private final Set<Module> filteredModules;
48 //collections to be filled in with filtered data
49 private final SetMultimap<URI, Module> namespaceToModules;
50 private final SetMultimap<String, Module> nameToModules;
53 * Filters SchemaContext for yang modules.
55 * @param delegate original SchemaContext
56 * @param rootModules modules (yang schemas) to be available and all their dependencies (modules importing
57 * rootModule and whole chain of their imports)
58 * @param additionalModuleIds (additional) modules (yang schemas) to be available and whole chain of their imports
60 public FilteringSchemaContextProxy(final SchemaContext delegate, final Collection<ModuleId> rootModules,
61 final Set<ModuleId> additionalModuleIds) {
62 Preconditions.checkNotNull(rootModules, "Base modules cannot be null.");
63 Preconditions.checkNotNull(additionalModuleIds, "Additional modules cannot be null.");
65 final Builder<Module> filteredModulesBuilder = new Builder<>();
67 // preparing map to get all modules with one name but difference in revision
68 final TreeMultimap<String, Module> nameToModulesAll = TreeMultimap.create(String::compareTo,
71 nameToModulesAll.putAll(getStringModuleMap(delegate));
73 // in case there is a particular dependency to view filteredModules/YANG models dependency is checked
74 // for module name and imports
75 processForRootModules(delegate, rootModules, filteredModulesBuilder);
77 // adding additional modules
78 processForAdditionalModules(delegate, additionalModuleIds, filteredModulesBuilder);
80 filteredModulesBuilder.addAll(getImportedModules(
81 Maps.uniqueIndex(delegate.getModules(), ModuleId.MODULE_TO_MODULE_ID::apply),
82 filteredModulesBuilder.build(), nameToModulesAll));
85 * Instead of doing this on each invocation of getModules(), pre-compute it once and keep it around.
87 final List<Module> sortedModules = new ArrayList<>(filteredModulesBuilder.build());
88 sortedModules.sort(NAME_REVISION_COMPARATOR);
89 this.filteredModules = ImmutableSet.copyOf(sortedModules);
91 final SetMultimap<URI, Module> nsMap = Multimaps.newSetMultimap(new TreeMap<>(),
92 AbstractSchemaContext::createModuleSet);
93 final SetMultimap<String, Module> nameMap = Multimaps.newSetMultimap(new TreeMap<>(),
94 AbstractSchemaContext::createModuleSet);
95 final ImmutableMap.Builder<QNameModule, Module> moduleMapBuilder = ImmutableMap.builder();
96 for (final Module module : filteredModules) {
97 nameMap.put(module.getName(), module);
98 nsMap.put(module.getNamespace(), module);
99 moduleMapBuilder.put(module.getQNameModule(), module);
102 namespaceToModules = ImmutableSetMultimap.copyOf(nsMap);
103 nameToModules = ImmutableSetMultimap.copyOf(nameMap);
104 moduleMap = moduleMapBuilder.build();
107 private static void processForAdditionalModules(final SchemaContext delegate,
108 final Set<ModuleId> additionalModuleIds, final Builder<Module> filteredModulesBuilder) {
109 filteredModulesBuilder.addAll(Collections2.filter(delegate.getModules(),
110 module -> selectAdditionalModules(module, additionalModuleIds)));
113 private void processForRootModules(final SchemaContext delegate, final Collection<ModuleId> rootModules,
114 final Builder<Module> filteredModulesBuilder) {
115 filteredModulesBuilder.addAll(Collections2.filter(delegate.getModules(),
116 module -> checkModuleDependency(module, rootModules)));
119 private static Multimap<String, Module> getStringModuleMap(final SchemaContext delegate) {
120 return Multimaps.index(delegate.getModules(), Module::getName);
123 //dealing with imported module other than root and directly importing root
124 private static Collection<Module> getImportedModules(final Map<ModuleId, Module> allModules,
125 final Set<Module> baseModules, final TreeMultimap<String, Module> nameToModulesAll) {
127 List<Module> relatedModules = Lists.newLinkedList();
129 for (Module module : baseModules) {
130 for (ModuleImport moduleImport : module.getImports()) {
131 Optional<Revision> revisionDate = moduleImport.getRevision();
132 if (!revisionDate.isPresent()) {
133 revisionDate = nameToModulesAll.get(moduleImport.getModuleName()).first().getRevision();
136 ModuleId key = new ModuleId(moduleImport.getModuleName(), revisionDate);
137 Module importedModule = allModules.get(key);
139 Preconditions.checkArgument(importedModule != null,
140 "Invalid schema, cannot find imported module: %s from module: %s, %s, modules:%s", key,
141 module.getQNameModule(), module.getName(), allModules);
142 relatedModules.add(importedModule);
144 //calling imports recursive
145 relatedModules.addAll(getImportedModules(allModules, Collections.singleton(importedModule),
150 return relatedModules;
154 public Set<Module> getModules() {
155 return filteredModules;
159 protected Map<QNameModule, Module> getModuleMap() {
164 protected SetMultimap<URI, Module> getNamespaceToModules() {
165 return namespaceToModules;
169 protected SetMultimap<String, Module> getNameToModules() {
170 return nameToModules;
173 private static boolean selectAdditionalModules(final Module module, final Set<ModuleId> additionalModules) {
174 return additionalModules.contains(new ModuleId(module.getName(), module.getRevision()));
177 //check for any dependency regarding given string
178 private boolean checkModuleDependency(final Module module, final Collection<ModuleId> rootModules) {
179 for (ModuleId rootModule : rootModules) {
180 if (rootModule.equals(new ModuleId(module.getName(), module.getRevision()))) {
184 //handling/checking imports regarding root modules
185 for (ModuleImport moduleImport : module.getImports()) {
186 if (moduleImport.getModuleName().equals(rootModule.getName())) {
187 return !moduleImport.getRevision().isPresent()
188 || moduleImport.getRevision().equals(rootModule.getRev());
192 //submodules handling
193 for (Module moduleSub : module.getSubmodules()) {
194 return checkModuleDependency(moduleSub, rootModules);
202 public String toString() {
203 return String.format("SchemaContextProxyImpl{filteredModules=%s}", filteredModules);
206 public static final class ModuleId {
207 private final String name;
208 private final Revision rev;
210 public ModuleId(final String name, final Optional<Revision> rev) {
211 Preconditions.checkArgument(!Strings.isNullOrEmpty(name),
212 "No module dependency name given. Nothing to do.");
214 Preconditions.checkArgument(rev.isPresent(), "No revision date given. Nothing to do.");
215 this.rev = rev.get();
218 public String getName() {
222 public Optional<Revision> getRev() {
223 return Optional.ofNullable(rev);
226 public static final Function<Module, ModuleId> MODULE_TO_MODULE_ID = input -> new ModuleId(input.getName(),
227 input.getRevision());
230 public boolean equals(final Object obj) {
234 if (!(obj instanceof ModuleId)) {
238 ModuleId moduleId = (ModuleId) obj;
239 if (name != null ? !name.equals(moduleId.name) : moduleId.name != null) {
242 if (rev != null ? !rev.equals(moduleId.rev) : moduleId.rev != null) {
250 public int hashCode() {
251 int result = name != null ? name.hashCode() : 0;
252 result = 31 * result + (rev != null ? rev.hashCode() : 0);
257 public String toString() {
258 return String.format("ModuleId{name='%s', rev=%s}",name,rev);