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| author |   shiva-charan <shiva-charan.m-s@hpe.com> | 2017-03-13 13:33:05 -0400 |
|---|---|---|
| committer |   Zhipeng (Howard) Huang <huangzhipeng@huawei.com> | 2017-03-14 14:11:26 +0000 |
| commit | ebef6bccca8315e5db046d7e726f92b292d0b712 (patch) | |
| tree | b4f3e17216de0c40dfe977828eb9a4dd71881b6b /docs/developer/design | |
| parent | ea9d47bbd0a06d0cca1738f244ab8b30e57ed9c6 (diff) | |
Design document for policy2tosca patch set-2
Signed-off-by: shiva-charan <shiva-charan.m-s@hpe.com>
Change-Id: I9f1d1def0c49dadb03c5bcc1d704465eb60cc80a
(cherry picked from commit c836ee07a5cec51b2aef6cde13a12869746c3bef)
Diffstat (limited to 'docs/developer/design')
| -rw-r--r-- | docs/developer/design/policy2tosca.rst | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/docs/developer/design/policy2tosca.rst b/docs/developer/design/policy2tosca.rst index 8dcedad..3ef1dca 100644 --- a/docs/developer/design/policy2tosca.rst +++ b/docs/developer/design/policy2tosca.rst @@ -5,4 +5,44 @@ Parser polic2tosca ================== +Problem description +------------------- +In NFV, various templates are utilized to describe the deployment requirements, +the post-instantiation records or other purposes.However in order to make these +templates adaptable and feasible for purpose like deployment orchestration/ +automation,certain tooling mechanism that provides template translation is +necessary.When an end user needs to inject/remove policies from the TOSCA +file generated the policy2tosca module comes in as part of parser project. +Design +------ +The following modules are implemented in policy2tosca module. + +CLIFF +----- +cliff is a framework for building command line programs. It uses plugins to +define sub-commands, output formatters, and other extensions.In policy2tosca +we use cliff to define the commands to inject or remove policies from +TOSCA templates. +Reference for PYANG: https://docs.openstack.org/developer/cliff/ + +policy2tosca +------------ +policy2tosca is a custom module written with the plugins of cliff where we +define adding/removing definitions and/or types of policies. +Following are the sub modules under policy2tosca + * add_definition.py: To inject a policy definition to the TOSCA template. + * add_type.py: To inject a policy type to the TOSCA template. + * del_definition.py: To remove a policy definition from the TOSCA template. + * del_type.py: To remove a policy type from the TOSCA template. + +Input +----- +The user specifies the input in command line arguments for the policy2tosca +custom module with the source TOSCA file to which the policies should be +injected/removed. + +Output +------ +The output TOSCA template will be the input TOSCA file with the +modification of policies. |