Sample Code

The Python SDK now lets you create users, assign them roles and associated privileges, and remove them from the system.

User-Management APIs

Users who have been assigned the Admin role for the cluster are able to create, edit, and remove users. The Python SDK provides APIs to support these activities. A high-level summary of the APIs can be found in User-Management.

Python User-Management Example

The following code-example demonstrates how the user-management APIs can be used. It assumes that Couchbase Server is established on localhost; that the Full Administrator username and password are Administrator and password respectively; and that the travel-sample bucket is installed. For information on installing the travel-sample bucket, see Sample Buckets.

Use of the Full Administrator username and password gives an application complete access to all resources within the Couchbase Server-environment: use of the Full Administrator username and password may therefore be useful during code-development. However, for production purposes, the Full Administrator username and password should only be used when absolutely essential: in all other circumstances, the specified username and password should correspond to some lesser role, which appropriately delimits access to server-resources. Creation of such a role, and the establishment of its associated username and password, is demonstrated in the following code-example.
import logging
import sys

from couchbase.cluster import Cluster, PasswordAuthenticator

logging.basicConfig(stream=sys.stderr, level=logging.DEBUG)

# open cluster and authenticate as Cluster Admin
cluster = Cluster('couchbase://localhost:8091')

print 'Authenticator as Administrator.'
cluster.authenticate(PasswordAuthenticator('Administrator', 'password'))

# Create a user and assign roles
manager = cluster.cluster_manager()
manager.user_upsert('cbtestuser', 'cbtestuserpwd', [
    # Roles required for the reading of data from the bucket
    ('data_reader', 'travel-sample'),
    ('query_select', 'travel-sample'),

    # Roles required for the writing of data into the bucket
    ('data_writer', 'travel-sample'),
    ('query_insert', 'travel-sample'),
    ('query_delete', 'travel-sample'),

    # Role required for the creation of indexes on the bucket
    ('query_manage_index', 'travel-sample')
    ], 'cbtestuser')

print 'Listing current users.'
users = manager.users_get().value

for index, user in enumerate(users):
    print 'user {0}'.format(index)
    print 'user\'s name is {0}'.format(user.get('name'))
    print 'user\'s domain is {0}'.format(user.get('domain'))

    for role in user.get('roles'):
    print 'User has the role: {0}, applicable to bucket {1}'.format(role.get('role'), role.get('bucket_name'))

print 'Authenticating as user.'
cluster = Cluster('couchbase://localhost:8091')
cluster.authenticate(PasswordAuthenticator('cbtestuser', 'cbtestuserpwd'))

print 'Opening travel-sample bucket as user.'
bucket = cluster.open_bucket('travel-sample')

# Create a N1QL Primary Index (but ignore if one already exists).
bucket.bucket_manager().create_n1ql_primary_index(defer=False, ignore_exists=True)

print 'Reading out airline_10 document.'
airline = bucket.get('airline_10')

print 'Found: {0}'.format(airline.value)

print 'Upserting new document as user.'
    {'callsign': 'MILE-AIR',
    'iata': 'Q5',
    'icao': 'MLA',
    'id': 11,
    'name': '40-Mile Air',
    'type': 'airline'})

print 'Reading out airline_11 document.'
airline = bucket.get('airline_11')

print 'Found: {0}'.format(airline)

print 'Performing query as user.'
value = 'Query-results are:'

result = bucket.n1ql_query('SELECT * FROM `travel-sample` LIMIT 5')
for row in result:
value += '\n\t{0}'.format(row)

print value

print 'Re-authenticating as administrator.'
cluster = Cluster('couchbase://localhost:8091')
cluster.authenticate(PasswordAuthenticator('Administrator', 'password'))

print 'Removing user as administrator.'
user_to_remove = 'cbtestuser'
removed = cluster.cluster_manager().user_remove(user_to_remove)

if removed.success:
    print 'Deleted user {0}.'.format(user_to_remove)
    print 'Could not delete user {0}.'.format(user_to_remove)