couchclient

A light-weight CouchDB client for read-only requests of documents and views. It is not meant to be a full-featured client library or replacement for couchdb-python. Instead the focus is on being a read-only view of documents that would not necessarily be represented as CouchDB documents to the application requesting them.

By default it strips couchdbisms ("_id", "_rev") from documents.

Views are transformed to a dictionary from the CouchDB return representation to key-value pairs from the view. For example if a view is returned from CouchDB as:

{
    "total_rows": 2,
    "offset": 0,
    "rows": [
        {
            "id": "abc",
            "key": "foo",
            "value": {
                "_id": "abc",
                "_rev": "1-93dd63045e084f1f298ca675d230d3f7",
                "foo": "bar",
                "baz": "qux"
            }
        },
        {
            "id": "quux",
            "key": "corge",
            "value": {
                "_id": "quux",
                "_rev": "2-33de63045e084f14298ca675d230d3e8",
                "foo": "grault",
                "baz": "garply"
            }
        }
    ]
}

CouchDB.get_view will return a dictionary of:

{'abc': {'baz': 'qux', 'foo': 'bar'},
 'corge': {'baz': 'garply', 'foo': 'grault'}}

Examples

import couchclient

# Create a new client, if you use a SSL port, it will use the proper scheme
config = couchclient.CouchDB('couchdb.myhost.com', 5984, 'my_database')

# Get a single document
document = config.get_document('my_document')
print document

# Fetch a view
config = couchclient.CouchDB('couchdb.myhost.com', 5984,
                             'my_database')
messages = config.get_view('my_view_document', 'my_view')
print messages

API

class CouchDB(__builtin__.object)
 |  The CouchDB object creates a light-weight read-only client for CouchDB
 |  for retrieving documents and views.
 |
 |  Methods defined here:
 |
 |  __init__(self, host, port, database)
 |      Create a new configuration object for the given service and domain
 |      name.
 |
 |      :param str host: The FQDN needed to make requests to the CouchDB server
 |      :param str port: The port to query CouchDB on
 |      :param str database: The database name for CouchDB requests
 |
 |  get_document(self, document_id)
 |      Retrieve the document from the CouchDB server.
 |
 |      :param str document_id: The document id to fetch
 |      :returns: dict
 |      :raises: DocumentNotFound
 |      :raises: DocumentRetrievalFailure
 |
 |  get_view(self, document_id, view_name)
 |      Retrieve the view rows from the CouchDB server returning a dictionary
 |      of key value pairs as taken from the view rows keyed on the row key.
 |
 |      :param str document_id: The document_id with views
 |      :param str view_name: The name of the view in the document
 |      :returns: dict
 |      :raises: DocumentNotFound
 |      :raises: DocumentRetrievalFailure
 |
 |  strip_couch_attributes(self)
 |      Enable the stripping of CouchDB attributes (_id, _rev) on document
 |      retrieval.
 |
 |  strip_couch_attributes_off(self)
 |      Disable the stripping of CouchDB attributes (_id, _rev) on document
 |      retrieval.

class DocumentNotFound(exceptions.EnvironmentError)
 |  # Define exceptions that may be raised
 |
 |  Method resolution order:
 |      DocumentNotFound
 |      exceptions.EnvironmentError
 |      exceptions.StandardError
 |      exceptions.Exception
 |      exceptions.BaseException
 |      __builtin__.object
 |       |
 |  ----------------------------------------------------------------------
 |  Data descriptors inherited from exceptions.EnvironmentError:
 |
 |  errno
 |      exception errno
 |
 |  filename
 |      exception filename
 |
 |  strerror
 |      exception strerror
 |
 |  ----------------------------------------------------------------------
 |  Data descriptors inherited from exceptions.BaseException:
 |
 |  __dict__
 |
 |  args
 |
 |  message

 class DocumentRetrievalFailure(exceptions.EnvironmentError)
  |  Raised when a document was not retrieved from the CouchDB Server
  |
  |  Method resolution order:
  |      DocumentRetrievalFailure
  |      exceptions.EnvironmentError
  |      exceptions.StandardError
  |      exceptions.Exception
  |      exceptions.BaseException
  |      __builtin__.object
  |
  |  ----------------------------------------------------------------------
  |  Data descriptors inherited from exceptions.EnvironmentError:
  |
  |  errno
  |      exception errno
  |
  |  filename
  |      exception filename
  |
  |  strerror
  |      exception strerror
  |
  |  ----------------------------------------------------------------------
  |  Data descriptors inherited from exceptions.BaseException:
  |
  |  __dict__
  |
  |  args
  |
  |  message

Requirements

• requests
• simplejson