CBMS ERP MuK REST API for CBMS

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A customizable RESTful API for CBMS

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Description

MuK REST API for CBMS

A customizable RESTful API for CBMS

MuK IT GmbH – www.mukit.at

Community
Enterprise
onPremise
CBMS.sh
CBMS Online

Overview

Enables a REST API for the CBMS server. The
API has routes to authenticate and retrieve a token. Afterwards, a
set of routes to interact with the server are provided. The API can
be used by any language or framework which can make an HTTP requests
and receive responses with JSON payloads and works with both the
Community and the Enterprise Edition.

In case the module should be active in every database just change
the auto install flag to
True
. To activate the routes
even if no database is selected the module should be loaded right
at the server start. This can be done by editing the configuration
file or passing a load parameter to the start script.

Parameter:
--load=web,muk_rest

To access the api in a multi database enviroment without a db filter,
the name of the database must be provided with each request via the
db parameter ?db=database_name.

Key Features

Documentation

The API is documented based on the Open API specification. All endpoints are
described in great detail and a number of defined schemas make it possible to
keep a good overview of the required parameters as well as the returned results.

Furthermore, the documentation is automatically extended with the addition of
another endpoint. Whether it was added as custom endpoint or via Python code
does not matter.

Custom Endpoints

In addition to the existing API endpoints, more can easily be
added. It is not necessary to write any kind of code. New endpoints
can be created in the backend and are immediately available through
the API.

Different types of endpoints can be created. For example the
domain evaluation can be used to query certain data and return it
via the API. While other option are to run a server action or
execute custom Python code. Any custom routes are automatically
added to the documentation and can be further customized to define
parameters and return values.

Connect to the API

The API allows authentication via OAuth1 and OAuth2 as well as with username
and password, although an access key can also be used instead of the password.
The documentation only allows OAuth2 besides basic authentication. The API has
OAuth2 support for all 4 grant types. For OAuth, advanced security can be enabled
to allow only certain endpoints and parameters.

Code Example – OAuth2 Authentication

This example shows a login via OAuth2 and then some sample calls to the API.
The Python libraries
requests
and
requests_oauthlib
are used to connect to the API. Note that this is only
an example, the client and implementation can vary depending on the actual requirements.

import json
import requests

from pprint import pprint

from requests_oauthlib import OAuth2Session
from oauthlib.oauth2 import BackendApplicationClient

class RestAPI:
    def __init__(self):
        self.url = 'https://demo12.mukit.at'
        self.client_id = 'BackendApplicationFlowDemoClientKey'
        self.client_secret = 'BackendApplicationFlowDemoClientSecret'
        self.client = BackendApplicationClient(client_id=self.client_id)
        self.oauth = OAuth2Session(client=self.client)

    def route(self, url):
        if url.startswith('/'):
            url = "%s%s" % (self.url, url)
        return url

    def authenticate(self):
        self.oauth.fetch_token(
            token_url=self.route('/api/v1/authentication/oauth2/token'),
            client_id=self.client_id, client_secret=self.client_secret
        )

    def execute(self, enpoint, type="GET", data={}):
        if type == "POST":
            response = self.oauth.post(self.route(enpoint), data=data)
        elif type == "PUT":
            response = self.oauth.put(self.route(enpoint), data=data)
        elif type == "DELETE":
            response = self.oauth.delete(self.route(enpoint), data=data)
        else:
            response = self.oauth.get(self.route(enpoint), data=data)
        if response.status_code != 200:
            raise Exception(pprint(response.json()))
        else:
            return response.json()

# init API
api = RestAPI()
api.authenticate()

# test API
pprint(api.execute('/api/v1'))
pprint(api.execute('/api/v1/user'))

# sampel query
data = {
    'model': "res.partner",
    'domain': json.dumps([['parent_id.name', '=', "Azure Interior"]]),
    'fields': json.dumps(['name', 'image_small']),
}
response = api.execute('/api/v1/search_read', data=data)
for entry in response:
    entry['image_small'] = entry.get('image_small')[:5] + "..."
pprint(response)

# check customer
data = {
    'model': "res.partner",
    'domain': json.dumps([['name', '=', "Sample Customer"]]),
    'limit': 1
}
response = api.execute('/api/v1/search', data=data)
customer = next(iter(response), False)

# create customer
if not customer:
    values = {
        'name': "Sample Customer",
    }
    data = {
        'model': "res.partner",
        'values': json.dumps(values),
    }
    response = api.execute('/api/v1/create', type="POST", data=data)
    customer = next(iter(response))

# create product
values = {
    'name': "Sample Product",
}
data = {
    'model': "product.template",
    'values': json.dumps(values),
}
response = api.execute('/api/v1/create', type="POST", data=data)
product = next(iter(response))

# create order
values = {
    'partner_id': customer,
    'state': 'sale',
    'order_line': [(0, 0, {'product_id': product})],
}
data = {
    'model': "sale.order",
    'values': json.dumps(values),
}
response = api.execute('/api/v1/create', type="POST", data=data)
order = next(iter(response))
	      

The API as a Framework

The REST API is also designed as a framework and can be used as a basis for
an extension to fit the individual requirements. This code example shows how
easy it is to define an endpoint. The parameters in the
@api_docs
annotation are optional. If no parameters are given, dynamic default values
are generated based on the function signature.

class CommonController(http.Controller):
	
	@api_doc(
	    tags=['Common'], 
	    summary='User', 
	    description='Returns the current user.',
	    responses={
	        '200': {
	            'description': 'Current User', 
	            'content': {
	                'application/json': {
	                    'schema': {
	                        '$ref': '#/components/schemas/CurrentUser'
	                    },
	                    'example': {
	                        'name': 'Admin',
	                        'uid': 2,
	                    }
	                }
	            }
	        }
	    },
	    default_responses=['400', '401', '500'],
	)
	@tools.http.rest_route(
	    routes=build_route('/user'), 
	    methods=['GET'],
	    protected=True,
	)
	def user(self, **kw):
	    return make_json_response({
	        'uid': request.session and request.session.uid, 
	        'name': request.env.user and request.env.user.name
	    })
	      

Clients

There are already very good REST clients in almost every programming
language. For example, in Python there is the Requests library
to make HTTP calls and Requests-OAuthlib to authenticate with OAuth,
to name just one.

But in case you want to create your own client, you can
automatically generate one based on the API documentation. The client
is created by Swagger CodeGen and can serve as a good starting point.

Help and Support

Feel free to contact us, if you need any help with your CBMS
integration or additional features.
You will get 30 days of
support in case of any issues (except data recovery, migration or
training).

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