[actn-interface-tools] Added global-app module. Deleted some unused comments. Changed some import expressions.

global-app module: this module is under global-control module which is parallel with global-api module. It is used to contain implementations of interfaces in global-api module. Those implementations are able to control the lifecycle of objects in this OSS actn sdk.

Change-Id: I2032b9485a0b625193cb0b22f960d4f8739efa77
Signed-off-by: ruilin cai <ruilin.cai@huawei.com>
Issue-ID: INT-2213
Signed-off-by: ruilin cai <ruilin.cai@huawei.com>

8 files changed, 1004 insertions, 13 deletions

diff --git a/actn-interface-tools/global-control/app/pom.xml b/actn-interface-tools/global-control/app/pom.xml
new file mode 100644
index 0000000..50a9dbc
--- /dev/null
+++ b/actn-interface-tools/global-control/app/pom.xml
@@ -0,0 +1,105 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~   ============LICENSE_START=======================================================
+  ~   Actn Interface Tools
+  ~   ================================================================================
+  ~   Copyright (C) 2023 Huawei Canada Limited.
+  ~   ================================================================================
+  ~   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.
+  ~   ============LICENSE_END=========================================================
+  -->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.onap.integration.ietf-actn-tools</groupId>
+        <artifactId>global-control</artifactId>
+        <version>1.0-SNAPSHOT</version>
+
+    </parent>
+    <groupId>org.onap.integration.ietf-actn-tools</groupId>
+    <version>1.0-SNAPSHOT</version>
+    <artifactId>globalapp</artifactId>
+
+    <properties>
+        <onos.app.name>org.onosproject.yang</onos.app.name>
+        <onos-yang-tools-version>2.6.1</onos-yang-tools-version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.onap.integration.ietf-actn-tools</groupId>
+            <artifactId>actn-model</artifactId>
+            <version>1.0-SNAPSHOT</version>
+        </dependency>
+        <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>onos-yang-model</artifactId>
+            <version>${onos-yang-tools-version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>onos-yang-runtime</artifactId>
+            <version>${onos-yang-tools-version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>onos-yang-serializers-xml</artifactId>
+            <version>${onos-yang-tools-version}</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.onosproject</groupId>
+            <artifactId>onos-yang-serializers-json</artifactId>
+            <version>${onos-yang-tools-version}</version>
+
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.karaf.shell</groupId>
+            <artifactId>org.apache.karaf.shell.console</artifactId>
+            <scope>provided</scope>
+            <version>3.0.8</version>
+        </dependency>
+        <dependency>
+            <groupId>org.onap.integration.ietf-actn-tools</groupId>
+            <artifactId>actn-client</artifactId>
+            <version>1.0-SNAPSHOT</version>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.onap.integration.ietf-actn-tools</groupId>
+            <artifactId>globalapi</artifactId>
+            <version>1.0-SNAPSHOT</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.google.auto.service</groupId>
+            <artifactId>auto-service</artifactId>
+            <version>1.0</version>
+        </dependency>
+        <dependency>
+            <groupId>org.onap.integration.ietf-actn-tools</groupId>
+            <artifactId>yang-utils</artifactId>
+            <version>1.0-SNAPSHOT</version>
+            <scope>compile</scope>
+        </dependency>
+
+
+    </dependencies>
+
+
+</project>
diff --git a/actn-interface-tools/global-control/app/src/main/java/org/onap/integration/actninterfacetools/globalapp/AbstractYangModelRegistrator.java b/actn-interface-tools/global-control/app/src/main/java/org/onap/integration/actninterfacetools/globalapp/AbstractYangModelRegistrator.java
new file mode 100644
index 0000000..6dba1e5
--- /dev/null
+++ b/actn-interface-tools/global-control/app/src/main/java/org/onap/integration/actninterfacetools/globalapp/AbstractYangModelRegistrator.java
@@ -0,0 +1,102 @@
+/*
+ *   ============LICENSE_START=======================================================
+ *   Actn Interface Tools
+ *   ================================================================================
+ *   Copyright (C) 2023 Huawei Canada Limited.
+ *   ================================================================================
+ *   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.
+ *   ============LICENSE_END=========================================================
+ */
+
+package org.onap.integration.actninterfacetools.globalapp;
+
+import org.onap.integration.actninterfacetools.globalapp.impl.GlobalServiceUtil;
+import org.onosproject.yang.model.YangModel;
+import org.onosproject.yang.model.YangModuleId;
+import org.onosproject.yang.runtime.AppModuleInfo;
+import org.onosproject.yang.runtime.DefaultModelRegistrationParam;
+import org.onosproject.yang.runtime.ModelRegistrationParam;
+import org.onosproject.yang.runtime.ModelRegistrationParam.Builder;
+import org.onosproject.yang.runtime.YangModelRegistry;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import java.net.URISyntaxException;
+import java.util.Map;
+
+/**
+ * Abstract base for self-registering YANG models.
+ */
+
+public abstract class AbstractYangModelRegistrator {
+
+    private final Logger log = LoggerFactory.getLogger(getClass());
+    private final Class<?> loaderClass;
+
+    private Map<YangModuleId, AppModuleInfo> appInfo;
+    protected YangModel model;
+    private ModelRegistrationParam registrationParam;
+
+    protected YangModelRegistry modelRegistry = GlobalServiceUtil.getNewGlobalService();
+   protected YangClassLoaderRegistry sourceResolver = GlobalServiceUtil.getNewGlobalService();
+
+    /**
+     * Creates a model registrator primed with the class-loader of the specified
+     * class.
+     *
+     * @param loaderClass class whose class loader is to be used for locating
+     *                    schema data
+     */
+    protected AbstractYangModelRegistrator(Class<?> loaderClass) {
+        this.loaderClass = loaderClass;
+    }
+
+    /**
+     * Creates a model registrator primed with the class-loader of the specified
+     * class and application info.
+     *
+     * @param loaderClass class whose class loader is to be used for locating
+     *                    schema data
+     * @param appInfo     application information
+     */
+    protected AbstractYangModelRegistrator(Class<?> loaderClass,
+                                           Map<YangModuleId, AppModuleInfo> appInfo) {
+        this.loaderClass = loaderClass;
+        this.appInfo = appInfo;
+    }
+
+
+    public void activate() throws URISyntaxException {
+        model = YangManagerUtils.getYangModel(loaderClass);
+        ModelRegistrationParam.Builder b =
+                DefaultModelRegistrationParam.builder().setYangModel(model);
+        registrationParam = getAppInfo(b).setYangModel(model).build();
+        sourceResolver.registerClassLoader(model.getYangModelId(), loaderClass.getClassLoader());
+        modelRegistry.registerModel(registrationParam);
+        log.info("Yang Model Registration Finished");
+    }
+
+    protected ModelRegistrationParam.Builder getAppInfo(Builder b) {
+        if (appInfo != null) {
+            appInfo.entrySet().stream().filter(
+                    entry -> model.getYangModule(entry.getKey()) != null).forEach(
+                    entry -> b.addAppModuleInfo(entry.getKey(), entry.getValue()));
+        }
+        return b;
+    }
+
+    protected void deactivate() {
+        modelRegistry.unregisterModel(registrationParam);
+        sourceResolver.unregisterClassLoader(model.getYangModelId());
+        log.info("Stopped");
+    }
+}
diff --git a/actn-interface-tools/global-control/app/src/main/java/org/onap/integration/actninterfacetools/globalapp/ActnModelRegistrator.java b/actn-interface-tools/global-control/app/src/main/java/org/onap/integration/actninterfacetools/globalapp/ActnModelRegistrator.java
new file mode 100644
index 0000000..5b34e88
--- /dev/null
+++ b/actn-interface-tools/global-control/app/src/main/java/org/onap/integration/actninterfacetools/globalapp/ActnModelRegistrator.java
@@ -0,0 +1,137 @@
+/*
+ *   ============LICENSE_START=======================================================
+ *   Actn Interface Tools
+ *   ================================================================================
+ *   Copyright (C) 2023 Huawei Canada Limited.
+ *   ================================================================================
+ *   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.
+ *   ============LICENSE_END=========================================================
+ */
+
+package org.onap.integration.actninterfacetools.globalapp;
+
+
+import com.google.common.collect.ImmutableMap;
+import org.apache.felix.scr.annotations.Component;
+import org.onosproject.yang.gen.v1.ietfethtetopology.rev20191118.IetfEthTeTopology;
+import org.onosproject.yang.gen.v1.ietfethtetunnel.rev20180301.IetfEthTeTunnel;
+import org.onosproject.yang.gen.v1.ietfinettypes.rev20210222.IetfInetTypes;
+import org.onosproject.yang.gen.v1.ietfroutingtypes.rev20171204.IetfRoutingTypes;
+import org.onosproject.yang.gen.v1.ietfyangtypes.rev20210414.IetfYangTypes;
+import org.onosproject.yang.gen.v11.ietfethtranservice.rev20210111.IetfEthTranService;
+import org.onosproject.yang.gen.v11.ietfethtrantypes.rev20191103.IetfEthTranTypes;
+import org.onosproject.yang.gen.v11.ietflayer1types.rev20210219.IetfLayer1Types;
+import org.onosproject.yang.gen.v11.ietfnetwork.rev20180226.IetfNetwork;
+import org.onosproject.yang.gen.v11.ietfnetworktopology.rev20180226.IetfNetworkTopology;
+import org.onosproject.yang.gen.v11.ietfopticalslice.rev20200821.IetfOpticalSlice;
+import org.onosproject.yang.gen.v11.ietfotntopology.rev20210222.IetfOtnTopology;
+import org.onosproject.yang.gen.v11.ietfotntunnel.rev20210625.IetfOtnTunnel;
+import org.onosproject.yang.gen.v11.ietfte.rev20210220.IetfTe;
+import org.onosproject.yang.gen.v11.ietftetopology.rev20200806.IetfTeTopology;
+import org.onosproject.yang.gen.v11.ietftetypes.rev20200610.IetfTeTypes;
+import org.onosproject.yang.model.YangModel;
+import org.onosproject.yang.model.YangModuleId;
+import org.onosproject.yang.runtime.AppModuleInfo;
+import org.onosproject.yang.runtime.DefaultAppModuleInfo;
+
+import java.net.URISyntaxException;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+
+/**
+ * Representation of TE Topology YANG model registrator.
+ */
+public class ActnModelRegistrator extends AbstractYangModelRegistrator {
+    /**
+     * Creates ACTN YANG model registrator.
+     */
+    public ActnModelRegistrator() throws URISyntaxException {
+        super(IetfTeTopology.class, getAppInfo());
+    }
+
+    private static Map<YangModuleId, AppModuleInfo> getAppInfo() throws URISyntaxException {
+        Map<YangModuleId, AppModuleInfo> appInfo = new HashMap<>();
+        YangModel model = YangManagerUtils.getYangModel(IetfTeTopology.class);
+        Iterator<YangModuleId> it = model.getYangModulesId().iterator();
+        YangModuleId id;
+        while (it.hasNext()) {
+            id = it.next();
+            switch (id.moduleName()) {
+                case "ietf-inet-types":
+                    appInfo.put(id, new DefaultAppModuleInfo(IetfInetTypes.class, null));
+                    break;
+
+                case "ietf-network":
+                    appInfo.put(id, new DefaultAppModuleInfo(IetfNetwork.class, null));
+                    break;
+                case "ietf-network-topology":
+                    appInfo.put(id, new DefaultAppModuleInfo(IetfNetworkTopology.class, null));
+                    break;
+
+                case "ietf-yang-types":
+                    appInfo.put(id, new DefaultAppModuleInfo(IetfYangTypes.class, null));
+                    break;
+                case "ietf-routing-types":
+                    appInfo.put(id, new DefaultAppModuleInfo(IetfRoutingTypes.class, null));
+                    break;
+                case "ietf-te-types":
+                    appInfo.put(id, new DefaultAppModuleInfo(IetfTeTypes.class, null));
+                    break;
+
+
+
+                case "ietf-te-topology":
+                    appInfo.put(id, new DefaultAppModuleInfo(IetfTeTopology.class, null));
+                    break;
+                case "ietf-otn-topology":
+                    appInfo.put(id, new DefaultAppModuleInfo(IetfOtnTopology.class, null));
+                    break;
+
+                case "ietf-eth-tran-types":
+                    appInfo.put(id, new DefaultAppModuleInfo(IetfEthTranTypes.class, null));
+                    break;
+                case "ietf-eth-te-topology":
+                    appInfo.put(id, new DefaultAppModuleInfo(IetfEthTeTopology.class, null));
+                    break;
+
+
+                case "ietf-te":
+                    appInfo.put(id, new DefaultAppModuleInfo(IetfTe.class, null));
+                    break;
+
+                case "ietf-otn-tunnel":
+                    appInfo.put(id, new DefaultAppModuleInfo(IetfOtnTunnel.class, null));
+                    break;
+                case "ietf-eth-te-tunnel":
+                    appInfo.put(id, new DefaultAppModuleInfo(IetfEthTeTunnel.class, null));
+                    break;
+
+
+                case "ietf-optical-slice":
+                    appInfo.put(id, new DefaultAppModuleInfo(IetfOpticalSlice.class,null));
+                    break;
+                case "ietf-layer1-types":
+                    appInfo.put(id, new DefaultAppModuleInfo(IetfLayer1Types.class,null));
+                    break;
+                case "ietf-eth-tran-service":
+                    appInfo.put(id, new DefaultAppModuleInfo(IetfEthTranService.class,null));
+                    break;
+                default:
+                    break;
+            }
+        }
+
+        return ImmutableMap.copyOf(appInfo);
+    }
+}
diff --git a/actn-interface-tools/global-control/app/src/main/java/org/onap/integration/actninterfacetools/globalapp/YangClassLoaderRegistry.java b/actn-interface-tools/global-control/app/src/main/java/org/onap/integration/actninterfacetools/globalapp/YangClassLoaderRegistry.java
new file mode 100644
index 0000000..fd35e46
--- /dev/null
+++ b/actn-interface-tools/global-control/app/src/main/java/org/onap/integration/actninterfacetools/globalapp/YangClassLoaderRegistry.java
@@ -0,0 +1,54 @@
+/*
+ *   ============LICENSE_START=======================================================
+ *   Actn Interface Tools
+ *   ================================================================================
+ *   Copyright (C) 2023 Huawei Canada Limited.
+ *   ================================================================================
+ *   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.
+ *   ============LICENSE_END=========================================================
+ */
+
+package org.onap.integration.actninterfacetools.globalapp;
+
+/**
+ * Auxiliary mechanism for resolving model IDs into class-loaders from where
+ * the model was registered to allow access to model-specific resources.
+ *
+ * Note: Consider promoting this to ONOS YANG Tools repo.
+ */
+
+public interface YangClassLoaderRegistry {
+
+    /**
+     * Get the class loader registered for the given model id.
+     *
+     * @param modelId model identifier
+     * @return class loader registered for the model
+     */
+    ClassLoader getClassLoader(String modelId);
+
+    /**
+     * Register the class loader for the specified model.
+     *
+     * @param modelId     model identifier
+     * @param classLoader class loader
+     */
+    void registerClassLoader(String modelId, ClassLoader classLoader);
+
+    /**
+     * Register the class loader for the specified model.
+     *
+     * @param modelId model identifier
+     */
+    void unregisterClassLoader(String modelId);
+}
diff --git a/actn-interface-tools/global-control/app/src/main/java/org/onap/integration/actninterfacetools/globalapp/YangManagerUtils.java b/actn-interface-tools/global-control/app/src/main/java/org/onap/integration/actninterfacetools/globalapp/YangManagerUtils.java
new file mode 100644
index 0000000..d3a3dba
--- /dev/null
+++ b/actn-interface-tools/global-control/app/src/main/java/org/onap/integration/actninterfacetools/globalapp/YangManagerUtils.java
@@ -0,0 +1,118 @@
+/*
+ *   ============LICENSE_START=======================================================
+ *   Actn Interface Tools
+ *   ================================================================================
+ *   Copyright (C) 2023 Huawei Canada Limited.
+ *   ================================================================================
+ *   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.
+ *   ============LICENSE_END=========================================================
+ */
+package org.onap.integration.actninterfacetools.globalapp;
+
+import org.onosproject.yang.compiler.tool.YangCompilerManager;
+import org.onosproject.yang.compiler.tool.YangNodeInfo;
+import org.onosproject.yang.model.YangModel;
+import org.onosproject.yang.runtime.helperutils.YangApacheUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.URISyntaxException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.regex.Pattern;
+
+public class YangManagerUtils {
+    private static final String SLASH;
+    private static final String HYPHEN = "-";
+    private static final String PERIOD = ".";
+    private static final String YANG_RESOURCES = "yang/resources";
+    private static final String SYSTEM;
+    private static final String MAVEN = "mvn:";
+    private static final String JAR = ".jar";
+    private static final String USER_DIRECTORY = "user.dir";
+    private static final Logger log;
+
+    private YangManagerUtils() {
+    }
+    public static YangModel getYangModel(Class<?> modClass) throws URISyntaxException {
+        String jarPath = new File(YangManagerUtils.class.getProtectionDomain().getCodeSource().getLocation().toURI()).getPath();
+        String yangModelPath = jarPath.replaceAll("/global-control/app/target/classes", "/actn-model/target/actn-model-1.0-SNAPSHOT");
+        List<YangNodeInfo> nodeInfo = new ArrayList();
+//        System.out.println(yangModelPath);
+        String metaPath = yangModelPath + SLASH + "yang/resources" + SLASH;
+        YangModel model = processJarParsingOperations(yangModelPath);
+        if (model != null) {
+            YangCompilerManager.setNodeInfo(model, nodeInfo);
+            if (!nodeInfo.isEmpty()) {
+                return YangCompilerManager.processYangModel(metaPath, nodeInfo, model.getYangModelId(), false);
+            }
+        }
+
+        return null;
+    }
+    private static String getJarPathFromBundleLocation(String mvnLocationPath, String currentDirectory) {
+        StringBuilder builder = new StringBuilder();
+        builder.append(currentDirectory).append(SYSTEM);
+        StringBuilder ver = new StringBuilder();
+        if (mvnLocationPath.contains("mvn:")) {
+            String[] strArray = mvnLocationPath.replaceFirst("\\$Bundle-.*$", "").split("mvn:");
+            if (strArray[1].contains(File.separator)) {
+                String[] split = strArray[1].split(File.separator);
+                if (split[0].contains(".")) {
+                    String[] groupId = split[0].split(Pattern.quote("."));
+                    String[] var7 = groupId;
+                    int var8 = groupId.length;
+
+                    for(int var9 = 0; var9 < var8; ++var9) {
+                        String s = var7[var9];
+                        builder.append(s).append(SLASH);
+                    }
+
+                    for(int i = 1; i < split.length; ++i) {
+                        builder.append(split[i]).append(SLASH);
+                        ver.append(split[i]).append("-");
+                    }
+
+                    builder.append(ver);
+                    builder.deleteCharAt(builder.length() - 1);
+                    return builder.toString();
+                }
+            }
+        }
+
+        return null;
+    }
+
+    private static YangModel processJarParsingOperations(String path) {
+        String jar = path + ".jar";
+
+        try {
+            File file = new File(jar);
+            if (file.exists()) {
+                return YangCompilerManager.parseJarFile(path + ".jar", path);
+            }
+        } catch (IOException var3) {
+            log.error(" failed to parse the jar file in path {} : {} ", path, var3.getMessage());
+        }
+
+        return null;
+    }
+
+    static {
+        SLASH = File.separator;
+        SYSTEM = SLASH + "system" + SLASH;
+        log = LoggerFactory.getLogger(YangApacheUtils.class);
+    }
+}
diff --git a/actn-interface-tools/global-control/app/src/main/java/org/onap/integration/actninterfacetools/globalapp/impl/GlobalServiceImpl.java b/actn-interface-tools/global-control/app/src/main/java/org/onap/integration/actninterfacetools/globalapp/impl/GlobalServiceImpl.java
new file mode 100644
index 0000000..33df725
--- /dev/null
+++ b/actn-interface-tools/global-control/app/src/main/java/org/onap/integration/actninterfacetools/globalapp/impl/GlobalServiceImpl.java
@@ -0,0 +1,212 @@
+/*
+ *   ============LICENSE_START=======================================================
+ *   Actn Interface Tools
+ *   ================================================================================
+ *   Copyright (C) 2023 Huawei Canada Limited.
+ *   ================================================================================
+ *   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.
+ *   ============LICENSE_END=========================================================
+ */
+package org.onap.integration.actninterfacetools.globalapp.impl;
+
+import com.google.auto.service.AutoService;
+import org.onap.integration.actninterfacetools.actnclient.impl.ActnClientServiceImpl;
+import org.onap.integration.actninterfacetools.globalapi.ActnClientService;
+import org.onap.integration.actninterfacetools.globalapi.ActnDataConverter;
+import org.onap.integration.actninterfacetools.globalapi.GlobalService;
+import org.onap.integration.actninterfacetools.globalapp.YangClassLoaderRegistry;
+import org.onosproject.yang.model.ModelConverter;
+import org.onosproject.yang.model.ModelObjectData;
+import org.onosproject.yang.model.ResourceData;
+import org.onosproject.yang.model.SchemaContextProvider;
+import org.onosproject.yang.model.SchemaContext;
+import org.onosproject.yang.model.ResourceId;
+import org.onosproject.yang.model.RpcContext;
+import org.onosproject.yang.model.ModelObjectId;
+import org.onosproject.yang.model.YangModel;
+import org.onosproject.yang.model.YangModule;
+import org.onosproject.yang.model.YangModuleId;
+import org.onosproject.yang.runtime.ModelRegistrationParam;
+import org.onosproject.yang.runtime.YangModelRegistry;
+import org.onosproject.yang.runtime.YangRuntimeService;
+import org.onosproject.yang.runtime.YangSerializerRegistry;
+import org.onosproject.yang.runtime.CompositeData;
+import org.onosproject.yang.runtime.CompositeStream;
+import org.onosproject.yang.runtime.RuntimeContext;
+import org.onosproject.yang.runtime.YangSerializer;
+import org.onosproject.yang.runtime.impl.DefaultModelConverter;
+import org.onosproject.yang.runtime.impl.DefaultYangModelRegistry;
+import org.onosproject.yang.runtime.impl.DefaultYangRuntimeHandler;
+import org.onosproject.yang.runtime.impl.DefaultYangSerializerRegistry;
+import org.onosproject.yang.runtime.impl.DefaultSchemaContextProvider;
+
+import java.net.URISyntaxException;
+import java.util.Map;
+import java.util.Set;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+@AutoService(GlobalService.class)
+public class GlobalServiceImpl implements GlobalService, YangModelRegistry,
+        YangSerializerRegistry, YangRuntimeService, ModelConverter,
+        SchemaContextProvider, YangClassLoaderRegistry {
+    private static volatile GlobalServiceImpl globalService = null;
+      private static GlobalServiceUtil globalServiceUtil= GlobalServiceUtil.getNewGlobalService();
+
+    public GlobalServiceImpl() {
+    }
+    public static GlobalServiceImpl getNewGlobalService(){
+        if(globalService != null){
+            return globalService;
+        }
+        synchronized (ActnClientServiceImpl.class) {
+            if(globalService == null){
+                globalService = new GlobalServiceImpl();
+
+            }
+            return globalService;
+        }
+    }
+
+    @Override
+    public String getServiceName() {
+        return "GlobalServiceImpl";
+    }
+
+    @Override
+    public void initialize() throws URISyntaxException {
+        globalServiceUtil.initialize();
+    }
+
+    @Override
+    public ActnClientService getActnClientService(ActnDataConverter actnDataConverter) throws URISyntaxException {
+        return globalServiceUtil.getActnClientService(actnDataConverter);
+    }
+
+    public DefaultYangModelRegistry getModelRegistry(){
+
+        return globalServiceUtil.getModelRegistry();
+    }
+    public DefaultYangSerializerRegistry getSerializerRegistry(){
+        return globalServiceUtil.getSerializerRegistry();
+    }
+    public DefaultYangRuntimeHandler getRuntimeService(){
+        return globalServiceUtil.getRuntimeService();
+    }
+    public DefaultModelConverter getModelConverter(){
+        return globalServiceUtil.getModelConverter();
+    }
+    public DefaultSchemaContextProvider getSchemaContextProvider(){
+        return globalServiceUtil.getSchemaContextProvider();
+    }
+
+    public Map<String, ClassLoader> getClassLoaders(){
+        return globalServiceUtil.getClassLoaders();
+    }
+
+
+    @Override
+    public ClassLoader getClassLoader(String modelId) {
+        return globalServiceUtil.getClassLoader(modelId);
+    }
+
+    @Override
+    public void registerClassLoader(String modelId, ClassLoader classLoader) {
+        globalServiceUtil.registerClassLoader(modelId, classLoader);
+    }
+
+    @Override
+    public void unregisterClassLoader(String modelId) {
+        globalServiceUtil.unregisterClassLoader(modelId);
+    }
+
+    @Override
+    public ModelObjectData createModel(ResourceData resourceData) {
+        return globalServiceUtil.createModel(resourceData);
+    }
+
+    @Override
+    public ResourceData createDataNode(ModelObjectData modelObjectData) {
+        return globalServiceUtil.createDataNode(modelObjectData);
+    }
+
+    @Override
+    public SchemaContext getSchemaContext(ResourceId resourceId) {
+        return globalServiceUtil.getSchemaContext(resourceId);
+    }
+
+    @Override
+    public RpcContext getRpcContext(ResourceId resourceId) {
+        return globalServiceUtil.getRpcContext(resourceId);
+    }
+
+    @Override
+    public void registerModel(ModelRegistrationParam modelRegistrationParam) throws IllegalArgumentException {
+        globalServiceUtil.registerModel(modelRegistrationParam);
+    }
+
+
+    @Override
+    public void registerAnydataSchema(ModelObjectId parentModId, ModelObjectId childModId) throws IllegalArgumentException {
+        globalServiceUtil.registerAnydataSchema(parentModId, childModId);
+    }
+
+    @Override
+    public void unregisterAnydataSchema(Class parentClass, Class childClass) throws IllegalArgumentException {
+        globalServiceUtil.unregisterAnydataSchema(parentClass, childClass);
+    }
+
+    @Override
+    public void unregisterModel(ModelRegistrationParam modelRegistrationParam) {
+        globalServiceUtil.unregisterModel(modelRegistrationParam);
+    }
+
+    @Override
+    public Set<YangModel> getModels() {
+        return globalServiceUtil.getModels();
+    }
+
+    @Override
+    public YangModel getModel(String s) {
+        return globalServiceUtil.getModel(s);
+    }
+
+    @Override
+    public YangModule getModule(YangModuleId yangModuleId) {
+        return globalServiceUtil.getModule(yangModuleId);
+    }
+
+    @Override
+    public CompositeData decode(CompositeStream cs, RuntimeContext rc) {
+        return globalServiceUtil.decode(cs, rc);
+    }
+
+    @Override
+    public CompositeStream encode(CompositeData cd, RuntimeContext rc) {
+        return globalServiceUtil.encode(cd, rc);
+    }
+
+    @Override
+    public void registerSerializer(YangSerializer ys) {
+        globalServiceUtil.registerSerializer(ys);
+    }
+
+    @Override
+    public void unregisterSerializer(YangSerializer ys) {
+        globalServiceUtil.unregisterSerializer(ys);
+    }
+
+    @Override
+    public Set<YangSerializer> getSerializers() {
+        return globalServiceUtil.getSerializers();
+    }
+}
diff --git a/actn-interface-tools/global-control/app/src/main/java/org/onap/integration/actninterfacetools/globalapp/impl/GlobalServiceUtil.java b/actn-interface-tools/global-control/app/src/main/java/org/onap/integration/actninterfacetools/globalapp/impl/GlobalServiceUtil.java
new file mode 100644
index 0000000..899a794
--- /dev/null
+++ b/actn-interface-tools/global-control/app/src/main/java/org/onap/integration/actninterfacetools/globalapp/impl/GlobalServiceUtil.java
@@ -0,0 +1,272 @@
+/*
+ *   ============LICENSE_START=======================================================
+ *   Actn Interface Tools
+ *   ================================================================================
+ *   Copyright (C) 2023 Huawei Canada Limited.
+ *   ================================================================================
+ *   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.
+ *   ============LICENSE_END=========================================================
+ */
+package org.onap.integration.actninterfacetools.globalapp.impl;
+
+import com.google.auto.service.AutoService;
+import org.onap.integration.actninterfacetools.actnclient.impl.ActnClientServiceImpl;
+import org.onap.integration.actninterfacetools.globalapi.ActnClientService;
+import org.onap.integration.actninterfacetools.globalapi.ActnDataConverter;
+import org.onap.integration.actninterfacetools.globalapi.GlobalService;
+import org.onap.integration.actninterfacetools.globalapp.AbstractYangModelRegistrator;
+import org.onap.integration.actninterfacetools.globalapp.ActnModelRegistrator;
+import org.onap.integration.actninterfacetools.globalapp.YangClassLoaderRegistry;
+import org.onap.integration.actninterfacetools.yangutils.CodecConverter;
+import org.onap.integration.actninterfacetools.yangutils.YangToolsUtil;
+import org.onosproject.yang.model.ModelConverter;
+import org.onosproject.yang.model.ModelObjectData;
+import org.onosproject.yang.model.ResourceData;
+import org.onosproject.yang.model.SchemaContextProvider;
+import org.onosproject.yang.model.SchemaContext;
+import org.onosproject.yang.model.ResourceId;
+import org.onosproject.yang.model.RpcContext;
+import org.onosproject.yang.model.ModelObjectId;
+import org.onosproject.yang.model.YangModel;
+import org.onosproject.yang.model.YangModule;
+import org.onosproject.yang.model.YangModuleId;
+import org.onosproject.yang.model.NodeKey;
+import org.onosproject.yang.runtime.ModelRegistrationParam;
+import org.onosproject.yang.runtime.YangModelRegistry;
+import org.onosproject.yang.runtime.YangRuntimeService;
+import org.onosproject.yang.runtime.YangSerializerRegistry;
+import org.onosproject.yang.runtime.CompositeData;
+import org.onosproject.yang.runtime.CompositeStream;
+import org.onosproject.yang.runtime.RuntimeContext;
+import org.onosproject.yang.runtime.YangSerializer;
+import org.onosproject.yang.runtime.impl.DefaultModelConverter;
+import org.onosproject.yang.runtime.impl.DefaultYangModelRegistry;
+import org.onosproject.yang.runtime.impl.DefaultYangRuntimeHandler;
+import org.onosproject.yang.runtime.impl.DefaultYangSerializerRegistry;
+import org.onosproject.yang.runtime.impl.DefaultSchemaContextProvider;
+import org.onosproject.yang.serializers.json.JsonSerializer;
+import org.onosproject.yang.serializers.xml.XmlSerializer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.net.URISyntaxException;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+
+public class GlobalServiceUtil implements YangModelRegistry,
+        YangSerializerRegistry, YangRuntimeService, ModelConverter,
+        SchemaContextProvider, YangClassLoaderRegistry {
+    private static volatile GlobalServiceUtil globalServiceInstance = null;
+    private static Map<ActnDataConverter, ActnClientService> dataConverter2ActnClientServiceMap = new ConcurrentHashMap();
+    private static volatile boolean initialized = false;
+    private static final String APP_ID = "org.onosproject.yang";
+    private static final Logger log = LoggerFactory.getLogger(GlobalServiceUtil.class);
+    private static volatile DefaultYangModelRegistry modelRegistry = null;
+    private static volatile DefaultYangSerializerRegistry serializerRegistry = null;
+    private static volatile DefaultYangRuntimeHandler runtimeService = null;
+    private static volatile DefaultModelConverter modelConverter = null;
+    private static volatile DefaultSchemaContextProvider schemaContextProvider = null;
+
+    private static Map<String, ClassLoader> classLoaders = null;
+    private GlobalServiceUtil(){
+    }
+    public String getServiceName(){
+        return "GlobalServiceUtil";
+    }
+    public static GlobalServiceUtil getNewGlobalService(){
+        if(globalServiceInstance != null){
+            return globalServiceInstance;
+        }
+        synchronized (ActnClientServiceImpl.class) {
+            if(globalServiceInstance == null){
+                globalServiceInstance = new GlobalServiceUtil();
+
+            }
+            return globalServiceInstance;
+        }
+    }
+
+
+    public synchronized void initialize() throws URISyntaxException {
+        if(!initialized){
+            if(serializerRegistry == null){
+                serializerRegistry = new DefaultYangSerializerRegistry();
+            }
+            if(modelRegistry == null){
+                modelRegistry = new DefaultYangModelRegistry();
+            }
+            if(runtimeService == null){
+                runtimeService = new DefaultYangRuntimeHandler(serializerRegistry, modelRegistry);
+            }
+            if(schemaContextProvider == null){
+                schemaContextProvider = new DefaultSchemaContextProvider(modelRegistry);
+            }
+            serializerRegistry.registerSerializer(new JsonSerializer());
+            serializerRegistry.registerSerializer(new XmlSerializer());
+            if(modelConverter == null){
+                modelConverter = new DefaultModelConverter(modelRegistry);
+            }
+            if(classLoaders == null){
+                classLoaders = new ConcurrentHashMap<>();
+            }
+            AbstractYangModelRegistrator abstractYangModelRegistrator = new ActnModelRegistrator();
+            abstractYangModelRegistrator.activate();
+            CodecConverter.active();
+            YangToolsUtil.active();
+            log.info("Initialization Finished");
+            initialized = true;
+        }
+    }
+
+
+    public synchronized ActnClientService getActnClientService(ActnDataConverter actnDataConverter) throws URISyntaxException {
+        if(!initialized){
+            initialize();
+        }
+        if(dataConverter2ActnClientServiceMap.get(actnDataConverter)!=null){
+            return dataConverter2ActnClientServiceMap.get(actnDataConverter);
+        }else{
+            ActnClientService actnClientService = new ActnClientServiceImpl(actnDataConverter);
+            dataConverter2ActnClientServiceMap.put(actnDataConverter, actnClientService);
+            return actnClientService;
+        }
+    }
+
+    public DefaultYangModelRegistry getModelRegistry(){
+        return modelRegistry;
+    }
+    public DefaultYangSerializerRegistry getSerializerRegistry(){
+        return serializerRegistry;
+    }
+    public DefaultYangRuntimeHandler getRuntimeService(){
+        return runtimeService;
+    }
+    public DefaultModelConverter getModelConverter(){
+        return modelConverter;
+    }
+    public DefaultSchemaContextProvider getSchemaContextProvider(){
+        return schemaContextProvider;
+    }
+
+    public Map<String, ClassLoader> getClassLoaders(){
+        return classLoaders;
+    }
+
+
+    @Override
+    public ClassLoader getClassLoader(String modelId) {
+        return classLoaders.get(modelId);
+    }
+
+    @Override
+    public void registerClassLoader(String modelId, ClassLoader classLoader) {
+        classLoaders.put(modelId, classLoader);
+    }
+
+    @Override
+    public void unregisterClassLoader(String modelId) {
+        classLoaders.remove(modelId);
+    }
+
+    @Override
+    public ModelObjectData createModel(ResourceData resourceData) {
+        return modelConverter.createModel(resourceData);
+    }
+
+    @Override
+    public ResourceData createDataNode(ModelObjectData modelObjectData) {
+        return modelConverter.createDataNode(modelObjectData);
+    }
+
+    @Override
+    public SchemaContext getSchemaContext(ResourceId resourceId) {
+        checkNotNull(resourceId, " resource id can't be null.");
+        NodeKey key = resourceId.nodeKeys().get(0);
+        if (resourceId.nodeKeys().size() == 1 &&
+                "/".equals(key.schemaId().name())) {
+            return modelRegistry;
+        }
+        log.info("To be implemented.");
+        return null;
+    }
+
+    @Override
+    public RpcContext getRpcContext(ResourceId resourceId) {
+        return schemaContextProvider.getRpcContext(resourceId);
+    }
+
+    @Override
+    public void registerModel(ModelRegistrationParam modelRegistrationParam) throws IllegalArgumentException {
+        modelRegistry.registerModel(modelRegistrationParam);
+    }
+
+
+    @Override
+    public void registerAnydataSchema(ModelObjectId parentModId, ModelObjectId childModId) throws IllegalArgumentException {
+        modelRegistry.registerAnydataSchema(parentModId, childModId);
+    }
+
+    @Override
+    public void unregisterAnydataSchema(Class parentClass, Class childClass) throws IllegalArgumentException {
+        modelRegistry.unregisterAnydataSchema(parentClass, childClass);
+    }
+
+    @Override
+    public void unregisterModel(ModelRegistrationParam modelRegistrationParam) {
+        modelRegistry.unregisterModel(modelRegistrationParam);
+    }
+
+    @Override
+    public Set<YangModel> getModels() {
+        return modelRegistry.getModels();
+    }
+
+    @Override
+    public YangModel getModel(String s) {
+        return modelRegistry.getModel(s);
+    }
+
+    @Override
+    public YangModule getModule(YangModuleId yangModuleId) {
+        return modelRegistry.getModule(yangModuleId);
+    }
+
+    @Override
+    public CompositeData decode(CompositeStream cs, RuntimeContext rc) {
+        return runtimeService.decode(cs, rc);
+    }
+
+    @Override
+    public CompositeStream encode(CompositeData cd, RuntimeContext rc) {
+        return runtimeService.encode(cd, rc);
+    }
+
+    @Override
+    public void registerSerializer(YangSerializer ys) {
+        serializerRegistry.registerSerializer(ys);
+    }
+
+    @Override
+    public void unregisterSerializer(YangSerializer ys) {
+        serializerRegistry.unregisterSerializer(ys);
+    }
+
+    @Override
+    public Set<YangSerializer> getSerializers() {
+        return serializerRegistry.getSerializers();
+    }
+}
diff --git a/actn-interface-tools/actn-client/src/main/java/org/onap/integration/actninterfacetools/actnclient/api/ActnInterface.java b/actn-interface-tools/global-control/app/src/main/java/org/onap/integration/actninterfacetools/globalapp/package-info.java
index 5325807..4cdfdc2 100644..100755
--- a/actn-interface-tools/actn-client/src/main/java/org/onap/integration/actninterfacetools/actnclient/api/ActnInterface.java
+++ b/actn-interface-tools/global-control/app/src/main/java/org/onap/integration/actninterfacetools/globalapp/package-info.java
@@ -17,17 +17,8 @@
  *   limitations under the License.
  *   ============LICENSE_END=========================================================
  */
-package org.onap.integration.actninterfacetools.actnclient.api;
-
-public interface ActnInterface {
-    CustomerTopology getNetworkTopology(String topologyId);
-
-    void createOtnTunnel(CustomerOtnTunnel customerOtnTunnel);
-
-    CustomerOtnTunnel getOtnTunnel(String actnOtnTunnelId);
-
-    void createEthService(CustomerEthService customerEthService);
-
-    CustomerEthService getEthService(String actnEthServiceId);
-}
 
+/**
+ * Base application to bring in the YANG libraries and assemble them for other apps to use.
+ */
+package org.onap.integration.actninterfacetools.globalapp;
\ No newline at end of file