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.. This work is licensed under a Creative Commons Attribution 4.0 International License.
.. http://creativecommons.org/licenses/by/4.0
=================
Parser apigateway
=================
This document provides a description of apigateway, a message relay submodule for the other
parser submodules.
.. contents::
:depth: 3
:local:
Overview
--------
Provide unified access interfaces for follow independent parser components:
- tosca2heat
- yang2tosca
- policy2tosca
- verigraph
- parser ui
The apigateway will relay message between above submodules throngh gRPC interface, in additon,
apigateway also exposes restful api to provide parser all functions to the 3rd applications.
Architecture
------------
Apigateway exploits three sub-components:
- **APIGW**, the main part of apigateway, which is the message center.
- **gRPC**, provide gRPC client and server for the other parser sub-modules, it can be devided
into defferent pair of client/server according to the function.
- **CLI**, command line tool for apigateway access and management .
Apigateway architecture is shown below:
.. image:: /images/API_gateway_architecture.png
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