1 files changed, 88 insertions, 0 deletions
diff --git a/vpp-integration/api-docs/core/src/main/java/io/fd/hc2vpp/docs/core/ModelTypeIndex.java b/vpp-integration/api-docs/core/src/main/java/io/fd/hc2vpp/docs/core/ModelTypeIndex.java
new file mode 100644
index 000000000..9fd5976b7
--- /dev/null
+++ b/vpp-integration/api-docs/core/src/main/java/io/fd/hc2vpp/docs/core/ModelTypeIndex.java
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ *
+ * 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.
+ */
+
+package io.fd.hc2vpp.docs.core;
+
+import static java.util.stream.Collectors.toMap;
+
+import com.google.common.io.Resources;
+import java.io.IOException;
+import java.net.URL;
+import java.nio.charset.StandardCharsets;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.stream.Collectors;
+import org.opendaylight.yangtools.yang.binding.YangModelBindingProvider;
+import org.opendaylight.yangtools.yang.binding.YangModuleInfo;
+
+/**
+ * Maps namespaces to models
+ */
+class ModelTypeIndex {
+
+    private final Map<YangModelKey, String> namespaceToModuleIndex;
+
+    ModelTypeIndex() throws IOException {
+        namespaceToModuleIndex = collectAllModules(this.getClass().getClassLoader())
+                .stream()
+                .collect(toMap(YangModelKey::new, YangModuleInfo::getName));
+    }
+
+    private static YangModelBindingProvider getModuleBindingProviderInstance(final Class<?> aClass) {
+        try {
+            return (YangModelBindingProvider) aClass.newInstance();
+        } catch (InstantiationException | IllegalAccessException e) {
+            throw new IllegalStateException(e);
+        }
+    }
+
+    private static Class<?> loadClass(final ClassLoader classLoader, final String name) {
+        try {
+            return classLoader.loadClass(name);
+        } catch (ClassNotFoundException e) {
+            throw new IllegalStateException(e);
+
+        }
+    }
+
+    private static List<String> loadResource(final URL url) {
+        try {
+            return Resources.readLines(url, StandardCharsets.UTF_8);
+        } catch (IOException e) {
+            throw new IllegalStateException(e);
+        }
+    }
+
+    String namespaceToModule(final String namespace,
+                             final String revision) {
+        return namespaceToModuleIndex.get(new YangModelKey(namespace, revision));
+    }
+
+    private Set<YangModuleInfo> collectAllModules(final ClassLoader classLoader) throws IOException {
+        return Collections.list(classLoader.getResources("META-INF/services/" +
+                YangModelBindingProvider.class.getName()))
+                .stream()
+                .map(ModelTypeIndex::loadResource)
+                .flatMap(Collection::stream)
+                .map(name -> loadClass(classLoader, name))
+                .map(ModelTypeIndex::getModuleBindingProviderInstance)
+                .map(YangModelBindingProvider::getModuleInfo)
+                .collect(Collectors.toSet());
+    }
+}