py2neo.client.config – Client configuration

class py2neo.client.config.ConnectionProfile(profile=None, **settings)

Connection details for a Neo4j service.

A connection profile holds a set of values that describe how to connect to, and authorise against, a particular Neo4j service. The set of values held within a profile are available as either object attributes (e.g. profile.uri) or sub-items (e.g. profile["uri"].

Profile instances are immutable, so can safely be hashed for inclusion within a set or as dictionary keys.

Parameters:

• profile –

  The base connection information, provided as a dictionary, an existing ConnectionProfile object or a string URI. This value can also be None, in which case default base settings are used.

  • (None) – no base profile; use default settings
  • (str) – URI profile, e.g. bolt://bob@graph.example.com:7687
  • (dict) – dictionary of individual settings
  • (ConnectionProfile) – existing profile object
• settings –

  An optional set of individual overrides for each value. Valid options are:

  • address – either a tuple (e.g. ('localhost', 7687)), an Address object, or a string (e.g. 'localhost:7687')
  • auth – either a 2-tuple (e.g. ('user', 'password')), or a string (e.g. 'user:password')
  • host
  • password
  • port
  • scheme
  • secure
  • user
  • verify

The values used for a default profile will be based on a local server listening on the default Bolt port, with the password password. These defaults can be altered via environment variables, if required:

NEO4J_URI

NEO4J_AUTH

NEO4J_SECURE

NEO4J_VERIFY

The full set of attributes and operations are described below.

profile == other

Return True if profile and other are equal.

profile != other

Return True if profile and other are unequal.

hash(profile)

Return a hash of profile based on its contained values.

profile[key]

Return a profile value using a string key. Key names are identical to the corresponding attribute names.

len(profile)

Return the number of values encoded within this profile.

dict(profile)

Coerce the profile into a dictionary of key-value pairs.

address

The full socket Address of the remote server. If unspecified, and uninfluenced by environment variables, this will default to IPv4Address(('localhost', 7687)).

auth

A 2-tuple of (user, password) representing the combined auth details. If unspecified, and uninfluenced by environment variables, this will default to ('neo4j', 'password').

classmethod from_file(filenames, section, prefix=None)

Load profile information from a configuration file.

The required file format is described in the standard library configparser module, and is similar to that used in Windows INI files.

Parameters:

• filenames –
• section –
• prefix –

Returns:

ConnectionProfile object created from the loaded configuration

host

The host name or IP address of the remote server. If unspecified, and uninfluenced by environment variables, this will default to 'localhost'.

password

The password which with to authorise. If unspecified, and uninfluenced by environment variables, this will default to 'password'.

port

The port to which to connect on the remote server. This will be the correct port for the given protocol. If unspecified, and uninfluenced by environment variables, this will default to 7687 (for Bolt traffic).

port_number

A variant of port guaranteed to be returned as a number. In some cases, the regular port value can be a string, this attempts to resolve or convert that value into a number. If unspecified, and uninfluenced by environment variables, this will default to 7687 (for Bolt traffic).

protocol

The name of the underlying point-to-point protocol, derived from the URI scheme. This will either be 'bolt' or 'http', regardless of security and verification settings. If unspecified, and uninfluenced by environment variables, this will default to 'bolt'.

scheme

The URI scheme for contacting the remote server. If unspecified, and uninfluenced by environment variables, this will default to 'bolt'.

secure

A flag for whether or not to apply security to the connection. If unspecified, and uninfluenced by environment variables, this will default to True.

uri

A full URI for the profile. This generally includes all other information, excluding the password (for security reasons). If unspecified, and uninfluenced by environment variables, this will default to 'bolt://neo4j@localhost:7687'.

user

The user as whom to authorise. If unspecified, and uninfluenced by environment variables, this will default to 'neo4j'.

verify

A flag for verification of remote server certificates. If unspecified, and uninfluenced by environment variables, this will default to True.

py2neo.client.config.bolt_user_agent()

Returns the default user agent sent over Bolt connections.

py2neo.client.config.http_user_agent()

Returns the default user agent sent over HTTP connections.