Documentation stub for Hw-go

Documentation stub for Hw-go.

Signed-off-by: subhash kumar singh <subh.singh@samsung.com>
Change-Id: Ib3baa5fd811c49b107adc91b4565a7a0f7b34e5a

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+from docs_conf.conf import *
+
+linkcheck_ignore = [
+    'http://localhost.*',
+    'http://127.0.0.1.*',
+    'https://gerrit.o-ran-sc.org.*'
+]

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+---
+project_cfg: oran
+project: ric-app-hw-go

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+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. SPDX-License-Identifier: CC-BY-4.0
+.. Copyright (c) 2021 Samsung Electronics Co., Ltd. All Rights Reserved.Copyright (C) 2021
+
+
+Welcome to O-RAN SC HW-go Documentation
+========================================================
+
+.. toctree::
+   :maxdepth: 2
+   :caption: Contents:
+
+   overview.rst
+   release-notes.rst
+   installation-guide.rst
+   user-guide.rst
+
+* :ref:`genindex`
+* :ref:`modindex`
+* :ref:`search`

diff --git a/docs/installation-guide.rst b/docs/installation-guide.rst
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+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. SPDX-License-Identifier: CC-BY-4.0
+.. Copyright (c) 2021 Samsung Electronics Co., Ltd. All Rights Reserved.
+
+
+Installation Guide
+==================
+
+.. contents::
+   :depth: 3
+   :local:
+
+Abstract
+--------
+
+This document describes how to install the reference HW-go xAPP.
+
+Version history
+
++--------------------+--------------------+--------------------+--------------------+
+| **Date**           | **Ver.**           | **Author**         | **Comment**        |
+|                    |                    |                    |                    |
++--------------------+--------------------+--------------------+--------------------+
+| -                  |-                   |Rahul Banerji       | -                  |
+|                    |                    |                    |                    |
++--------------------+--------------------+--------------------+--------------------+
+
+
+Introduction
+------------
+
+This document provides guidelines on how to install and configure the HW-go xAPP in various environments/operating modes.
+The audience of this document is assumed to have good knowledge in RIC Platform.
+
+
+Preface
+-------
+This xAPP can be run directly as a Linux binary, as a docker image, or in a pod in a Kubernetes environment.  The first
+two can be used for dev testing. The last option is how an xAPP is deployed in the RAN Intelligent Controller environment.
+This document covers all three methods.  
+
+
+
+
+Software Installation and Deployment
+------------------------------------
+The build process assumes a Linux environment with go >= 1.15  and  has been tested on Ubuntu. For building docker images,
+the Docker environment must be present in the system.
+
+
+Build Process
+~~~~~~~~~~~~~
+The HW-go xAPP can be either tested as a Linux binary or as a docker image.
+   1. **Linux binary**: 
+      TBD
+
+   2. **Docker Image**: From the root of the repository, run   *docker --no-cache build -t <image-name> ./* .
+
+
+Deployment
+~~~~~~~~~~
+**Invoking  HW-go xAPP docker container directly** (not in RIC Kubernetes env.):
+        One can include the pod.yaml for including it in k8s build. Replace the image name with one built.
+        TBD: Adding HW-go xAPP to nexus repo
+
+Testing 
+--------
+
+Unit tests TBD

diff --git a/docs/overview.rst b/docs/overview.rst
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+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. SPDX-License-Identifier: CC-BY-4.0
+.. Copyright (c) 2020 Samsung Electronics Co., Ltd. All Rights Reserved.Copyright (C) 2020
+
+
+
+
+HW-go xAPP  Overview
+====================
+
+This repository contains open-source code for a prototype HW-go xAPP for near real-time
+RAN Intelligent Controller which makes use of go Xapp Framework.
+This xAPP aims to provide basic implementation of :
+
+-E2, A1 interfaces interactions.
+
+-Read-write operations into a persistent storage. 
+
+-xAPP Configuration management
+
+-RMR Health Check
+
+-xAPP Health Check
+
+-Raising alarms
+
+-Generating metrics

diff --git a/docs/release-notes.rst b/docs/release-notes.rst
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+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. SPDX-License-Identifier: CC-BY-4.0
+.. Copyright (c) 2020 Samsung Electronics Co., Ltd. All Rights Reserved.Copyright (C) 2020
+
+
+Release Notes
+=============
+
+
+This document provides the release notes for the Dawn Release of the HW-go xAPP.
+
+.. contents::
+   :depth: 3
+   :local:
+
+
+Version history
+---------------
+
++--------------------+--------------------+--------------------------+--------------------+
+| **Date**           | **Ver.**           | **Author**               | **Comment**        |
+|                    |                    |                          |                    |
++--------------------+--------------------+--------------------------+--------------------+
+| -                  | -                  |   Subhash Kumar Singh    | -                  |
+|                    |                    |                          |                    |
++--------------------+--------------------+--------------------------+--------------------+
+
+
+
+Summary
+-------
+
+This release of the Python HW xAPP demonstrates the following:
+
+-E2, A1 interfaces interactions.
+
+-Read-write operations into a persistent storage.
+
+-xAPP Configuration management
+
+-RMR Health Check
+
+-xAPP Health Check
+
+-Raising alarms
+
+-Generating metrics
+
+
+Release Data
+------------
+
++--------------------------------------+--------------------------------------+
+| **Project**                          | RAN Intelligent Controller           |
+|                                      |                                      |
++--------------------------------------+--------------------------------------+
+| **Repo/commit-ID**                   |      TBD                             |
+|                                      |                                      |
++--------------------------------------+--------------------------------------+
+| **Release designation**              |      TBD                             |
+|                                      |                                      |
++--------------------------------------+--------------------------------------+
+| **Release date**                     |      TBD                             |
+|                                      |                                      |
++--------------------------------------+--------------------------------------+
+| **Purpose of the delivery**          | open-source golang Hello World xAPP  |
+|                                      |                                      |
+|                                      |                                      |
++--------------------------------------+--------------------------------------+
+
+Components
+----------
+
+TBD
+
+  
+    
+
+Limitations
+-----------
+- The HW-go xAPP doesn't have any usecase in particular to display SDL capabilities.
+
+- The subscription process assumes, on sending subscription request results in valid subscription response. 
+
+- The HW-go xAPP doesn't address any RIC usecase in particular.

diff --git a/docs/requirements-docs.txt b/docs/requirements-docs.txt
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+sphinx
+sphinx-rtd-theme
+sphinxcontrib-httpdomain
+recommonmark
+lfdocs-conf

diff --git a/docs/user-guide.rst b/docs/user-guide.rst
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+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. SPDX-License-Identifier: CC-BY-4.0
+.. Copyright (c) 2021 Samsung Electronics Co., Ltd. All Rights Reserved.Copyright (C) 2021
+
+============================================================================================ 
+HW-go xAPP (golang)
+============================================================================================ 
+-------------------------------------------------------------------------------------------- 
+User's Guide 
+-------------------------------------------------------------------------------------------- 
+ 
+Introduction 
+============================================================================================ 
+
+The RIC platform provides set of functions as part of xAPP golang Framework that the xAPPs can use to accomplish their tasks.
+This xAPP is envisioned to provide python xAPP developers, examples of implementing these sets of functions.
+Note, HW-go xAPP does not address/implement any RIC Usecases. 
+
+HW-go xAPP Features 
+============================================================================================ 
+
+RIC Platform provides many Frameworks, APIs and libraries to aid the development of xAPPs. All xAPPs will have some custom
+processing functional logic core to the xApp and some additional non-functional platform related processing using 
+these APIs and libraries. This xAPP attempts to show the usage of such additional platform processing using xapp RIC framework APIs and libraries.
+
+
+The HW-go xAPP demonstrates how a golang based xApp uses the A1, and E2 interfaces and persistent database read-write operations.
+