YMS broker and Notification handler
Change-Id: Ic3659b2c2ad26ea2db1f03725b4883f19db2cc41
diff --git a/apps/yms/api/src/main/java/org/onosproject/yms/ysr/YangModuleIdentifier.java b/apps/yms/api/src/main/java/org/onosproject/yms/ysr/YangModuleIdentifier.java
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+++ b/apps/yms/api/src/main/java/org/onosproject/yms/ysr/YangModuleIdentifier.java
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+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * 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 org.onosproject.yms.ysr;
+
+/**
+ * Abstraction of an entity which provides YANG module identifiers.
+ * Reference RFC 7895
+ * YANG library provides information about all the YANG modules
+ * used by a network management server
+ */
+public interface YangModuleIdentifier {
+ /**
+ * retrieves the name of the YANG module.
+ *
+ * @return the name of the YANG module
+ */
+ String getModuleName();
+
+ /**
+ * Retrieves revision of the YANG module.
+ *
+ * Reference RFC 7895
+ * Each YANG module and submodule within the library has a
+ * revision. This is derived from the most recent revision statement
+ * within the module or submodule. If no such revision statement
+ * exists, the module's or submodule's revision is the zero-length
+ * string.
+ *
+ * @return revision of the YANG module
+ */
+ String getRevision();
+}
diff --git a/apps/yms/api/src/main/java/org/onosproject/yms/ysr/YangModuleInformation.java b/apps/yms/api/src/main/java/org/onosproject/yms/ysr/YangModuleInformation.java
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+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * 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 org.onosproject.yms.ysr;
+
+import java.util.List;
+
+/**
+ * Abstraction of an entity which provides YANG module information.
+ *
+ * Reference RFC 7895
+ * The following information is needed by a client application (for each
+ * YANG module in the library) to fully utilize the YANG data modeling
+ * language:
+ *
+ * o name: The name of the YANG module.
+ *
+ * o revision: Each YANG module and submodule within the library has a
+ * revision. This is derived from the most recent revision statement
+ * within the module or submodule. If no such revision statement
+ * exists, the module's or submodule's revision is the zero-length
+ * string.
+ *
+ * o submodule list: The name and revision of each submodule used by
+ * the module MUST be identified.
+ *
+ * o feature list: The name of each YANG feature supported by the
+ * server MUST be identified.
+ *
+ * o deviation list: The name of each YANG module used for deviation
+ * statements MUST be identified.
+ */
+public interface YangModuleInformation {
+ /**
+ * Retrieves the YANG modules identifier.
+ *
+ * @return YANG modules identifier
+ */
+ YangModuleIdentifier getModuleIdentifier();
+
+ /**
+ * Retrieves the YANG modules namespace.
+ * The XML namespace identifier for this module.
+ *
+ * @return YANG modules namespace
+ */
+ String getNamespace();
+
+ /**
+ * Reference RFC 7895
+ * Retrieves the list of YANG feature names from this module that are
+ * supported by the server, regardless of whether they are
+ * defined in the module or any included submodule.
+ *
+ * @return list of YANG features
+ */
+ List<String> getFeatureList();
+
+ /**
+ * Retrieves the list of submodules in the module.
+ * The name and revision of each submodule used by
+ * the module MUST be identified.
+ *
+ * Each entry represents one submodule within the
+ * parent module.
+ *
+ * @return list of submodules in the module
+ */
+ List<YangModuleIdentifier> getSubModuleIdentifier();
+}
diff --git a/apps/yms/api/src/main/java/org/onosproject/yms/ysr/YangModuleLibrary.java b/apps/yms/api/src/main/java/org/onosproject/yms/ysr/YangModuleLibrary.java
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+++ b/apps/yms/api/src/main/java/org/onosproject/yms/ysr/YangModuleLibrary.java
@@ -0,0 +1,84 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * 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 org.onosproject.yms.ysr;
+
+/*-
+ * Abstraction of an entity which provides the servers YANG library information.
+ *
+ * Reference RFC 7895
+ * The "ietf-yang-library" module provides information about the YANG
+ * library used by a server. This module is defined using YANG version
+ * 1, but it supports the description of YANG modules written in any
+ * revision of YANG.
+ *
+ * Following is the YANG Tree Diagram for the "ietf-yang-library"
+ * module:
+ *
+ * +--ro modules-state
+ * +--ro module-set-id string
+ * +--ro module* [name revision]
+ * +--ro name yang:yang-identifier
+ * +--ro revision union
+ * +--ro schema? inet:uri
+ * +--ro namespace inet:uri
+ * +--ro feature* yang:yang-identifier
+ * +--ro deviation* [name revision]
+ * | +--ro name yang:yang-identifier
+ * | +--ro revision union
+ * +--ro conformance-type enumeration
+ * +--ro submodule* [name revision]
+ * +--ro name yang:yang-identifier
+ * +--ro revision union
+ * +--ro schema? inet:uri
+ */
+
+import java.util.List;
+
+public interface YangModuleLibrary {
+ /**
+ * Retrieves the current module set id of the YANG library.
+ *
+ * Reference RFC7895.
+ * modules-state/module-set-id
+ *
+ * This mandatory leaf contains a unique implementation-specific
+ * identifier representing the current set of modules and submodules on
+ * a specific server. The value of this leaf MUST change whenever the
+ * set of modules and submodules in the YANG library changes. There is
+ * no requirement that the same set always results in the same "module-
+ * set-id" value.
+ *
+ * @return module set id of the YANG library
+ */
+ String getModuleSetId();
+
+ /**
+ * Retrieves the current list of YANG modules supported in the server.
+ *
+ * Reference RFC 7895.
+ * modules-state/module
+ *
+ * This mandatory list contains one entry for each YANG data model
+ * module supported by the server. There MUST be an entry in this list
+ * for each revision of each YANG module that is used by the server. It
+ * is possible for multiple revisions of the same module to be imported,
+ * in addition to an entry for the revision that is implemented by the
+ * server.
+ *
+ * @return the current list of YANG modules supported in the server
+ */
+ List<YangModuleInformation> getYangModuleList();
+}
diff --git a/apps/yms/api/src/main/java/org/onosproject/yms/ysr/package-info.java b/apps/yms/api/src/main/java/org/onosproject/yms/ysr/package-info.java
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index 0000000..4c19a5b
--- /dev/null
+++ b/apps/yms/api/src/main/java/org/onosproject/yms/ysr/package-info.java
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * 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.
+ */
+
+/**
+ * YANG schema registry (YSR) is responsible to maintain all the applications
+ * schemas defined in YANG. The YANG data tree builder depends on the schema
+ * registry to validate the tree building according to schema.
+ * YANG codec handler using the schema registry to maintain device schema.
+ */
+package org.onosproject.yms.ysr;