ConnectionProvider::FilesystemConnection Class Reference

class for filesystem connections; returns an object of type Qore::Dir More...

Inheritance diagram for ConnectionProvider::FilesystemConnection:

Public Member Methods
	constructor (string name, string description, string url, hash< auto > attributes={}, hash< auto > options={})
	creates the FilesystemConnection object More...
string	getType ()
	returns "dir"
Public Member Methods inherited from ConnectionProvider::AbstractConnectionWithInfo
	constructor (string name, string description, string url, hash< auto > attributes={}, hash< auto > options={})
	creates the AbstractConnection object More...
hash< ConnectionSchemeInfo >	getConnectionSchemeInfo ()
	Returns the ConnectionSchemeInfo hash for this object.
*hash< auto >	getDefaultOptions ()
	returns default options
*hash< auto >	getOptions ()
	returns static / initialization options
Public Member Methods inherited from ConnectionProvider::AbstractConnection
deprecated	constructor (string name, string desc, string url, bool monitor, *hash opts, hash urlh, *string safe_url, *bool enabled)
	creates the AbstractConnection object More...
	constructor (string name, string description, string url, hash< auto > attributes={}, hash< auto > options={})
	creates the AbstractConnection object More...
object	get (bool connect=True, *hash< auto > rtopts)
	returns the underlying connection object More...
hash< ConfigInfo >	getConfigHash ()
	returns a ConfigInfo hash of static configuration information about the connection More...
hash< ConnectionSchemeInfo >	getConnectionSchemeInfo ()
	Returns a default ConnectionSchemeInfo hash.
AbstractDataProvider	getDataProvider ()
	returns a data provider object for this connection, if supported More...
*hash< auto >	getDefaultOptions ()
	returns default options
string	getDescription ()
	Returns the connection description. More...
hash< auto >	getExtendedInfo (*hash< auto > opts)
	Returns connection info plus any extended information returned by the connection. More...
hash< ConnectionInfo >	getInfo (*hash< auto > opts)
	returns a ConnectionInfo hash of information about the connection More...
hash< ConnectionInfo >	getInfo (bool with_password=False)
	returns a ConnectionInfo hash of information about the connection More...
string	getName ()
	Returns the connection name. More...
*hash< auto >	getOptions ()
	returns static / initialization options
object	getPollImpl ()
	Returns an unconnected object for a non-blocking poll operation. More...
*hash< auto >	getRealOptions ()
	returns options for saving the connection's configuration information
*hash< auto >	getRuntimeOptions ()
	returns runtime options
string	getSafeUrl ()
	Returns the connection safe URL (without password info) More...
auto	getTag (string tag)
	returns the value of the given tag or NOTHING if not present
auto	getTagEx (string tag)
	returns the value of the given tag or throws an exception if the tag is not set with a value More...
hash< auto >	getTags ()
	returns all tags associated with the connection
string	getUrl ()
	Returns the connection URL. More...
bool	hasDataProvider ()
	returns True if the connection returns a data provider with the getDataProvider() method More...
	parseTextOptions ()
	this method is called when parsing connection file definitions from text files when loading into the database More...
hash< PingInfo >	ping (bool throw_exception=False)
	returns a hash with the results of the ping operation More...
AbstractPollOperation	startPollConnect ()
	Called to start the connection polling operation. More...
bool	supportsPollingApi ()
	returns True if the connection supports the Qore Socket-based polling API More...

Public Attributes
const	ConnectionScheme
	Connection entry info.
Public Attributes inherited from ConnectionProvider::AbstractConnection
bool	children_can_support_apis = False
	if the data provider or any of its children support requests (APIs)
bool	children_can_support_messages = False
	if the data provider or any of its children support messages
bool	children_can_support_observers = False
	if the data provider or any of its children support events
bool	children_can_support_records = False
	if the data provider or any of its children support records
bool	debug_data = False
	debug data flag; to be used an an indication for a higher-level implementation
string	desc
	connection description
bool	enabled = True
	enabled/disabled indicator flag
hash< auto >	internal_info
	internal tags
date	last_check
	date/time of last check/ping
bool	locked = False
	locked/unlocked flag
bool	loopback = False
	set to True for loopback connections
bool	monitor
	monitoring flag
string	name
	connection name
*hash< auto >	opts
	connection options
*hash< auto >	orig_opts
	original connection options
string	safe_url
	"safe" URL (password information removed)
string	status = "not checked"
	status string; in case of a connection error this string will be the error string
hash< auto >	tags = {}
	connection tags; user-defined key-value pairs
bool	up = False
	connection status flag; set by monitoring or explicit pings/connections
date	updated
	date/time of last update
string	url
	connection URL (potentially with password info)
hash< auto >	urlh
	broken down URL hash (as returned by Qore::parse_url())

Private Member Methods
hash< ConnectionSchemeInfo >	getConnectionSchemeInfoImpl ()
	Returns the ConnectionSchemeInfo hash for this object.
Dir	getImpl (bool connect=True, *hash rtopts)
	returns a Qore::Dir object More...
Private Member Methods inherited from ConnectionProvider::AbstractConnection
abstract object	getImpl (bool connect=True, *hash< auto > rtopts)
	this method must return the connection object corresponding to the object's configuration More...
string	getSafeUrl (hash< auto > urlh)
	creates a "safe" URL string with password information removed More...
hash< UrlInfo >	parseUrl (string url)
	Parse the URL to a hash. More...
hash< PingInfo >	pingIntern (hash< PingInfo > rv)
	performs the ping by executing get(); returns a PingInfo hash
	setChildCapabilitiesImpl ()
	Override to set child data provider capabilities once per child class.
hash< auto >	validateOptions (hash< auto > options)
	performs options validation in the constructor More...

Additional Inherited Members
Static Public Attributes inherited from ConnectionProvider::AbstractConnection
static *code	post_processing
	optional code for default post-processing of objects created by getImpl(); must take the connection object and the object created as arguments

Detailed Description

class for filesystem connections; returns an object of type Qore::Dir

this can be used to monitor filesystem free space or to ensure a network filesystem is mounted, for example

supports the following option:

• "readonly": does not mark the connection as down if the directory is read-only; use for example if the connection should point to a read-only base directory; interface directories should normally be writable

Note

the path will be subject to environment variable substitutions

Member Function Documentation

constructor()

ConnectionProvider::FilesystemConnection::constructor	(	string	name,
		string	description,
		string	url,
		hash< auto >	attributes = {},
		hash< auto >	options = {}
	)

creates the FilesystemConnection object

Parameters

name	the name of the connection
description	connection description
url	connection URL (potentially with password info)
attributes	various attributes. See below
options	connection options

See AbstractConnection::constructor() for attributes and options reference.

Exceptions

CONNECTION-OPTION-ERROR

missing or invalid connection option

getImpl()

Dir ConnectionProvider::FilesystemConnection::getImpl ( bool  connect = True, *hash  rtopts  )

private

returns a Qore::Dir object

Parameters

connect	if True, then the target directory is checked for existence and if it's writable, if either check fails, an exception is thrown
rtopts	this connection type does not accept any runtime option, so this parameter is ignored

Returns

a Qore::Dir object