NAME

Sys::Virt::Network - Represent & manage a libvirt virtual network

DESCRIPTION

The Sys::Virt::Network module represents a virtual network managed by the virtual machine monitor.

METHODS

my $uuid = $net->get_uuid()

Returns a 16 byte long string containing the raw globally unique identifier (UUID) for the network.

my $uuid = $net->get_uuid_string()

Returns a printable string representation of the raw UUID, in the format 'XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX'.

my $name = $net->get_name()

Returns a string with a locally unique name of the network

$net->is_active()

Returns a true value if the network is currently running

$net->is_persistent()

Returns a true value if the network has a persistent configuration file defined

my $xml = $net->get_xml_description()

Returns an XML document containing a complete description of the network's configuration

$net->create()

Start a network whose configuration was previously defined using the define_network method in Sys::Virt.

$net->undefine()

Remove the configuration associated with a network previously defined with the define_network method in Sys::Virt. If the network is running, you probably want to use the shutdown or destroy methods instead.

$net->destroy()

Immediately terminate the machine, and remove it from the virtual machine monitor. The $net handle is invalid after this call completes and should not be used again.

$net->update($command, $section, $parentIndex, $xml, $flags=0)

Update the network configuration with $xml. The $section parameter, which must be one of the XML SECTION CONSTANTS listed later, indicates what schema is used in $xml. The $command parameter determines what action is taken. Finally, the $flags parameter can be use to control which config is affected.

$net->get_bridge_name()

Return the name of the bridge device associated with the virtual network

$flag = $net->get_autostart();

Return a true value if the virtual network is configured to automatically start upon boot. Return false, otherwise

$net->set_autostart($flag)

Set the state of the autostart flag, which determines whether the virtual network will automatically start upon boot of the host OS.

@leases = $net->get_dhcp_leases($mac=undef, $flags=0)

Get a list of all active DHCP leases. If $mac is undefined than leases for all VMs are returned, otherwise only leases for the matching MAC address are returned. The $flags parameter is currently unused and defaults to zero.

The elements in the returned array are hash references with the following fields

iface: Network interface name
expirytime: Seconds since the epoch until the lease expires
type: One of the Sys::Virt IP address type constants
mac: The MAC address of the lease
iaid: The IAID of the client
ipaddr: The IP address of the lease
prefix: The IP address prefix
hostname: The optional hostname associated with the lease
clientid: The client ID or DUID

@port = $net->list_all_ports($flags=0)

List all ports associated with the network. The return array elements are instances of the Sys::Virt::NetworkPort class.

$port = $net->create_port($xml, $flags=0)

Create a new network port from the given $xml description. The $flags parameter can optionally taken one or more of the network port creation constants. The returned $port object is an instance of the Sys::Virt::NetworkPort class.

$port = $net->get_port_by_uuid($uuid);

Lookup a network port from a raw or printable UUID. The returned $port object is an instance of the Sys::Virt::NetworkPort class.

my $str = $net->get_metadata($type, $uri, $flags =0)

Returns the metadata element of type $type associated with the network. If $type is Sys::Virt::Network::METADATA_ELEMENT then the $uri parameter specifies the XML namespace to retrieve, otherwise $uri should be undef. The optional $flags parameter takes one of the XML UPDATE FLAGS values, and defaults to zero.

$net->set_metadata($type, $val, $key, $uri, $flags=0)

Sets the metadata element of type $type to hold the value $val. If $type is Sys::Virt::Network::METADATA_ELEMENT then the $key and $uri elements specify an XML namespace to use, otherwise they should both be undef. The optional $flags parameter takes one of the XML UPDATE FLAGS values, and defaults to zero.

CONSTANTS

This section documents constants that are used with various APIs described above

NETWORK CREATION CONSTANTS

When creating networks zero or more of the following constants may be used

Sys::Virt::Network::CREATE_VALIDATE: Validate the XML document against the XML schema

LIST FILTERING

The following constants are used to filter object lists

Sys::Virt::Network::LIST_ACTIVE: Include networks which are active
Sys::Virt::Network::LIST_INACTIVE: Include networks which are not active
Sys::Virt::Network::LIST_AUTOSTART: Include networks which are set to autostart
Sys::Virt::Network::LIST_NO_AUTOSTART: Include networks which are not set to autostart
Sys::Virt::Network::LIST_PERSISTENT: Include networks which are persistent
Sys::Virt::Network::LIST_TRANSIENT: Include networks which are transient

NETWORK DEFINE

The following constants can be used to control the behaviour of network define operations

Sys::Virt::Network::DEFINE_VALIDATE: Validate the XML document against the XML schema

XML CONSTANTS

The following constants are used when querying XML

Sys::Virt::Network::XML_INACTIVE: Request the inactive XML, instead of the current possibly live config.

XML SECTION CONSTANTS

The following constants are used to refer to sections of the XML document

Sys::Virt::Network::SECTION_BRIDGE: The bridge device element
Sys::Virt::Network::SECTION_DNS_HOST: The DNS host record section
Sys::Virt::Network::SECTION_DNS_SRV: The DNS SRV record section
Sys::Virt::Network::SECTION_DNS_TXT: The DNS TXT record section
Sys::Virt::Network::SECTION_DOMAIN: The domain name section
Sys::Virt::Network::SECTION_FORWARD: The forward device section
Sys::Virt::Network::SECTION_FORWARD_INTERFACE: The forward interface section
Sys::Virt::Network::SECTION_FORWARD_PF: The forward physical function section
Sys::Virt::Network::SECTION_IP: The IP address section
Sys::Virt::Network::SECTION_IP_DHCP_HOST: The IP address DHCP host section
Sys::Virt::Network::SECTION_IP_DHCP_RANGE: The IP address DHCP range section
Sys::Virt::Network::SECTION_PORTGROUP: The port group section
Sys::Virt::Network::SECTION_NONE: The top level domain element

XML UPDATE FLAGS

Sys::Virt::Network::UPDATE_AFFECT_CURRENT: Affect whatever the current object state is
Sys::Virt::Network::UPDATE_AFFECT_CONFIG: Always update the config file
Sys::Virt::Network::UPDATE_AFFECT_LIVE: Always update the live config

XML UPDATE COMMANDS

Sys::Virt::Network::UPDATE_COMMAND_NONE: No update
Sys::Virt::Network::UPDATE_COMMAND_DELETE: Remove the matching entry
Sys::Virt::Network::UPDATE_COMMAND_MODIFY: Modify the matching entry
Sys::Virt::Network::UPDATE_COMMAND_ADD_FIRST: Insert the matching entry at the start
Sys::Virt::Network::UPDATE_COMMAND_ADD_LAST: Insert the matching entry at the end

EVENT ID CONSTANTS

Sys::Virt::Network::EVENT_ID_LIFECYCLE: Network lifecycle events

LIFECYCLE CHANGE EVENTS

The following constants allow network lifecycle change events to be interpreted. The events contain both a state change, and a reason though the reason is currently unused.

Sys::Virt::Network::EVENT_DEFINED: Indicates that a persistent configuration has been defined for the network.
Sys::Virt::Network::EVENT_STARTED: The network has started running
Sys::Virt::Network::EVENT_STOPPED: The network has stopped running
Sys::Virt::Network::EVENT_UNDEFINED: The persistent configuration has gone away

METADATA TYPE CONSTANTS

The following constants control the type of metadata being accessed

Sys::Virt::Network::METADATA_TITLE: The short human friendly title of the network
Sys::Virt::Network::METADATA_DESCRIPTION: The long free text description of the network
Sys::Virt::Network::METADATA_ELEMENT: The structured metadata elements for the network

AUTHORS

Daniel P. Berrange <berrange@redhat.com>

COPYRIGHT

LICENSE

This program is free software; you can redistribute it and/or modify it under the terms of either the GNU General Public License as published by the Free Software Foundation (either version 2 of the License, or at your option any later version), or, the Artistic License, as specified in the Perl README file.

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