README.md

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# python-osmclient

OSM client library and console script

## Installation

### From git-repo

```bash
# Ubuntu 18.04 pre-requirements
sudo apt-get install python3-pip libcurl4-openssl-dev libssl-dev
# CentOS pre-requirements
# sudo yum install python3-pip libcurl-devel gnutls-devel
sudo -H python3 -m pip install python-magic
# Install OSM Information model
sudo -H python3 -m pip install git+https://osm.etsi.org/gerrit/osm/IM --upgrade
# Install OSM client from the git repo.
# You can install the latest client from master branch in this way:
sudo -H python3 -m pip install git+https://osm.etsi.org/gerrit/osm/osmclient
# You could also install a specific tag/version in this way
# sudo -H python3 -m pip install git+https://osm.etsi.org/gerrit/osm/osmclient@v7.0.0rc1
```

### From cloned repo (for developers)

```
# Ubuntu 18.04 pre-requirements
sudo apt-get install python3-pip libcurl4-openssl-dev libssl-dev
# Centos pre-requirements
# sudo yum install python3-pip libcurl-devel gnutls-devel
sudo -H python3 -m pip install python-magic
# Install OSM Information model
sudo -H python3 -m pip install git+https://osm.etsi.org/gerrit/osm/IM --upgrade
# Clone the osmclient repo and install OSM client from the git repo.
git clone https://osm.etsi.org/gerrit/osm/osmclient
cd osmclient
python3 -m pip install --user -e .
# logout and login so that PATH can be updated. Executable osm will be found in /home/ubuntu/.local/bin
```

## Setup

Set the OSM_HOSTNAME variable to the host of the OSM server (default: localhost).

```bash
localhost$ export OSM_HOSTNAME=<hostname>
```

## Examples

### upload vnfd

```bash
localhost$ osm upload-package ubuntu_xenial_vnf.tar.gz
{'transaction_id': 'ec12af77-1b91-4c84-b233-60f2c2c16d14'}
localhost$ osm vnfd-list
+--------------------+--------------------+
| vnfd name          | id                 |
+--------------------+--------------------+
| ubuntu_xenial_vnfd | ubuntu_xenial_vnfd |
+--------------------+--------------------+
```

### upload nsd

```bash
localhost$ osm upload-package ubuntu_xenial_ns.tar.gz
{'transaction_id': 'b560c9cb-43e1-49ef-a2da-af7aab24ce9d'}
localhost$ osm nsd-list
+-------------------+-------------------+
| nsd name          | id                |
+-------------------+-------------------+
| ubuntu_xenial_nsd | ubuntu_xenial_nsd |
+-------------------+-------------------+
```

### vim-list

```bash
localhost$ osm vim-list
+-------------+-----------------+--------------------------------------+
| ro-account  | datacenter name | uuid                                 |
+-------------+-----------------+--------------------------------------+
| osmopenmano | openstack-site  | 2ea04690-0e4a-11e7-89bc-00163e59ff0c |
+-------------+-----------------+--------------------------------------+
```

### instantiate ns

```bash
localhost$ osm ns-create ubuntu_xenial_nsd testns openstack-site
{'success': ''}
localhost$ osm ns-list
+------------------+--------------------------------------+-------------------+--------------------+---------------+
| ns instance name | id                                   | catalog name      | operational status | config status |
+------------------+--------------------------------------+-------------------+--------------------+---------------+
| testns           | 6b0d2906-13d4-11e7-aa01-b8ac6f7d0c77 | ubuntu_xenial_nsd | running            | configured    |
+------------------+--------------------------------------+-------------------+--------------------+---------------+
```

## Using osmclient as a library to interact with OSM

Assuming that you have installed python-osmclient package, it's pretty simple to write some Python code to interact with OSM.

### Simple Python code to get the list of NS packages

```python
from osmclient import client
from osmclient.common.exceptions import ClientException
hostname = "127.0.0.1"
myclient = client.Client(host=hostname, sol005=True)
resp = myclient.nsd.list()
print yaml.safe_dump(resp, indent=4, default_flow_style=False)
```

### Simple Python code to get the list of VNF packages from a specific user and project

The code will print for each package a pretty table, then the full details in yaml

```python
from osmclient import client
from osmclient.common.exceptions import ClientException
import yaml
from prettytable import PrettyTable
hostname = "127.0.0.1"
user = admin
password = admin
project = admin
kwargs = {}
if user is not None:
    kwargs['user']=user
if password is not None:
    kwargs['password']=password
if project is not None:
   kwargs['project']=project
myclient = client.Client(host=hostname, sol005=True, **kwargs)
resp = myclient.vnfd.list()
print yaml.safe_dump(resp, indent=4, default_flow_style=False)
```

## Enable autocompletion

You can enable autocompletion in OSM client by creating a file osm-complete.sh in the following way:

```bash
mkdir -p $HOME/.bash_completion.d
_OSM_COMPLETE=source osm > $HOME/.bash_completion.d/osm-complete.sh
```

Then you can add the following to your $HOME/.bashrc file:

```bash
. .bash_completion.d/osm-complete.sh
```

## Future work

- Create command classes for list and show operations
- Option `-c` for list and show operations to filter output and show only selected columns
- Option `-o <FORMAT>` to adapt output format (table, csv, yaml, json, jsonpath)
- Command ns-status to show the deployment status (RO) and configuration status (VCA) in an appealing format
- See how to deprecate commands and options: <https://stackoverflow.com/questions/50366719/correct-way-to-deprecate-parameter-alias-in-click>
- Evaluate the possibility to re-structure code to uniform all commands: `check`, `table_headers`, `run`, `output`