#include <metadata_proxy.h>

Collaboration diagram for MetadataProxy:

Classes
struct	MetadataStats

struct	SessionData

Public Types
typedef std::map< HttpSession *, SessionData >	SessionMap

typedef std::pair< HttpSession *, SessionData >	SessionPair

typedef std::map < HttpConnection , HttpSession >	ConnectionSessionMap

typedef std::pair < HttpConnection , HttpSession >	ConnectionSessionPair

typedef boost::intrusive_ptr < HttpSession >	HttpSessionPtr

Public Member Functions
	MetadataProxy (ServicesModule *module, const std::string &secret)

virtual	~MetadataProxy ()

void	CloseSessions ()

void	Shutdown ()

void	HandleMetadataRequest (HttpSession session, const HttpRequest request)

void	HandleMetadataResponse (HttpConnection *conn, HttpSessionPtr session, std::string &msg, boost::system::error_code &ec)

void	OnServerSessionEvent (HttpSession *session, TcpSession::Event event)

void	OnClientSessionEvent (HttpClientSession *session, TcpSession::Event event)

const MetadataStats &	metadatastats () const

void	ClearStats ()

int	VhostIndex (const std::string &vhost_name)
	Returns index of a network device that is specified by vhost_name. More...

bool	NetlinkGetVhostIp (Ip6Address &vhost_ll_ip)
	Adds an IP address specified in vhost_ll_ip to vhost0 interface inet6 addresses. More...

void	NetlinkAddVhostNb (const IpAddress &nb_ip, const MacAddress &via_mac)
	Adds a new neighbour (an arp entry) with given IP and MAC addresses. More...

void	NetlinkAddInterfaceRoute (const IpAddress &intf_addr)
	Adds routes to internal addresses of VM's interfaces. More...

void	AdvertiseMetaDataLinkLocalRoutes (const VmInterface vm, const Ip6Address &ll_ip, const VrfEntry intf_vrf)
	Advertises routes to a given vm-interface via a given IPv6 address. Routes are announced in the fabric VRF entry and in a given VRF entry. More...

void	DeleteMetaDataLinkLocalRoute (const VmInterface *vm_intf)
	Deletes an announced earlier route to a vm interface via a given IPv6 address. More...

const Ip6Address &	Ipv6ServiceAddress () const
	Returns an IPv6 address of the Metadata TF link local service. More...

void	InitializeHttp6Server (const VmInterface *vhost0)
	Initializes an HTTP server for IPv6 requests. More...

void	AdvertiseVhostRoute ()
	Advertises the LL route to vhost0 interface in the fabric VRF instance. More...

void	DeleteVhostRoute ()
	Deletes the LL route to vhost0 interface in the fabric VRF instance. More...

void	OnAVrfChange (DBTablePartBase part, DBEntryBase e)
	A callback that is invoked each time when a VRF entry is modified: added, changed or deleted. More...

void	OnAFabricRouteChange (DBTablePartBase part, DBEntryBase e)
	A callback that is invoked each time when a route is modified in the fabric policy VRF inet4 unicast table. The callback is used to update IPv6 address of the metadata link local service. IPv6 address of the service is calculated as: FE80 + IPv4 address, e.g. for IPv4 169.254.169.254, the IPv6 address is FE80::A9FE:A9FE. More...

void	OnAnInterfaceChange (DBTablePartBase part, DBEntryBase e)
	A callback which is invoked everytime any vm interface is changed. Handles deletion of routes associated with a deleted vm interface. More...

void	RegisterListeners ()
	Registers callbacks to intercept Agent's events emerging when a VRF entry is modified or an Interface is modified. More...

void	UnregisterListeners ()
	Unregisters all callbacks that were registered earlier to intercept Agent's events: MetadataProxy::OnAVrfChange, MetadataProxy::OnAFabricPolicyRouteChange, MetadataProxy::OnAnInterfaceChange. More...

Private Member Functions
HttpConnection *	GetProxyConnection (HttpSession session, bool conn_close, std::string nova_hostname)

void	CloseServerSession (HttpSession *session)

void	CloseClientSession (HttpConnection *conn)

void	ErrorClose (HttpSession *sesion, uint16_t error)

	DISALLOW_COPY_AND_ASSIGN (MetadataProxy)

Private Attributes
ServicesModule *	services_

std::string	shared_secret_

MetadataServer *	http_server_
	A pointer to a HTTP server listening on a IPv4 socket for Metadata requests from tenants / virtual machines. More...

MetadataServer *	http_server6_
	A pointer to a HTTP server listening on a IPv6 socket for Metadata requests from tenants / virtual machines. More...

MetadataClient *	http_client_

SessionMap	metadata_sessions_

ConnectionSessionMap	metadata_proxy_sessions_

MetadataStats	metadata_stats_

Ip6Address	ipv6_service_address_
	An IPv6 address on which Metadata6 link local service listens on. We use it instead of IPv4 compute IP. More...

DBTableBase::ListenerId	vrf_table_notify_id_
	an ID of a listener (callback) that acts when the VRF Table is modified More...

DBTableBase::ListenerId	fabric_notify_id_
	an ID of a listener (callback) that acts when a Fabric Policy VRF entry is modified More...

DBTableBase::ListenerId	intf_table_notify_id_
	an ID of a listener (callback) that acts when an InterfaceTable entry is modified More...

std::map< std::string, Ip6Address >	ll_ipv6_addresses_
	A correspondence table between a name of a vm interface, which requests a data from the service and the vm interface link local IPv6 address. The table is needed to obtain a link local address of vm interface in the MetadataProxy::DeleteMetaDataLinkLocalRoute function. More...

tbb::mutex	ll_ipv6_addr_mutex_
	A mutex which prevents simultaneous access to MetadataProxy::ll_ipv6_addresses_ table and member functions: MetadataProxy::DeleteMetaDataLinkLocalRoute, MetadataProxy::AdvertiseMetaDataLinkLocalRoutes. More...

Detailed Description

Definition at line 16 of file metadata_proxy.h.

Member Typedef Documentation

typedef std::map<HttpConnection *, HttpSession *> MetadataProxy::ConnectionSessionMap

Definition at line 42 of file metadata_proxy.h.

typedef std::pair<HttpConnection *, HttpSession *> MetadataProxy::ConnectionSessionPair

Definition at line 43 of file metadata_proxy.h.

typedef boost::intrusive_ptr<HttpSession> MetadataProxy::HttpSessionPtr

Definition at line 44 of file metadata_proxy.h.

typedef std::map<HttpSession *, SessionData> MetadataProxy::SessionMap

Definition at line 40 of file metadata_proxy.h.

typedef std::pair<HttpSession *, SessionData> MetadataProxy::SessionPair

Definition at line 41 of file metadata_proxy.h.

Constructor & Destructor Documentation

MetadataProxy::MetadataProxy	(	ServicesModule *	module,
		const std::string &	secret
	)

Definition at line 83 of file metadata_proxy.cc.

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MetadataProxy::~MetadataProxy ( )

virtual

Definition at line 105 of file metadata_proxy.cc.

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Member Function Documentation

void MetadataProxy::AdvertiseMetaDataLinkLocalRoutes	(	const VmInterface *	vm,
		const Ip6Address &	ll_ip,
		const VrfEntry *	intf_vrf
	)

Advertises routes to a given vm-interface via a given IPv6 address. Routes are announced in the fabric VRF entry and in a given VRF entry.

Parameters

vm	is a pointer to the vm interface
ll_ip	is an IPv6 address (prefix) to announce route to
intf_vrf	is a pointer to the VRF entry to which the vm interface belongs to

Definition at line 35 of file metadata_proxy_ip6.cc.

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void MetadataProxy::AdvertiseVhostRoute ( )

Advertises the LL route to vhost0 interface in the fabric VRF instance.

Definition at line 165 of file metadata_proxy_ip6.cc.

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void MetadataProxy::ClearStats ( )

inline

Definition at line 59 of file metadata_proxy.h.

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void MetadataProxy::CloseClientSession ( HttpConnection * conn )

private

Definition at line 477 of file metadata_proxy.cc.

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void MetadataProxy::CloseServerSession ( HttpSession * session )

private

Definition at line 471 of file metadata_proxy.cc.

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void MetadataProxy::CloseSessions ( )

Definition at line 109 of file metadata_proxy.cc.

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void MetadataProxy::DeleteMetaDataLinkLocalRoute ( const VmInterface * vm_intf )

Deletes an announced earlier route to a vm interface via a given IPv6 address.

Parameters

vm_intf is a pointer to the vm interface for which route should be deleted

Definition at line 76 of file metadata_proxy_ip6.cc.

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void MetadataProxy::DeleteVhostRoute ( )

Deletes the LL route to vhost0 interface in the fabric VRF instance.

Definition at line 191 of file metadata_proxy_ip6.cc.

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MetadataProxy::DISALLOW_COPY_AND_ASSIGN ( MetadataProxy )

private

void MetadataProxy::ErrorClose	(	HttpSession *	sesion,
		uint16_t	error
	)

private

Definition at line 484 of file metadata_proxy.cc.

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HttpConnection * MetadataProxy::GetProxyConnection	(	HttpSession *	session,
		bool	conn_close,
		std::string *	nova_hostname
	)

private

Definition at line 414 of file metadata_proxy.cc.

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void MetadataProxy::HandleMetadataRequest	(	HttpSession *	session,
		const HttpRequest *	request
	)

Definition at line 143 of file metadata_proxy.cc.

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void MetadataProxy::HandleMetadataResponse	(	HttpConnection *	conn,
		HttpSessionPtr	session,
		std::string &	msg,
		boost::system::error_code &	ec
	)

Definition at line 294 of file metadata_proxy.cc.

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void MetadataProxy::InitializeHttp6Server ( const VmInterface * vhost0 )

Initializes an HTTP server for IPv6 requests.

Definition at line 144 of file metadata_proxy_ip6.cc.

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const Ip6Address & MetadataProxy::Ipv6ServiceAddress ( ) const

Returns an IPv6 address of the Metadata TF link local service.

Returns: Ip6Address structure containing the IPv6 address

Definition at line 140 of file metadata_proxy_ip6.cc.

const MetadataStats& MetadataProxy::metadatastats ( ) const

inline

Definition at line 58 of file metadata_proxy.h.

void MetadataProxy::NetlinkAddInterfaceRoute ( const IpAddress & intf_addr )

Adds routes to internal addresses of VM's interfaces.

Parameters

intf_addr - the internal IP address assigned to an interface (metadata IP)

Definition at line 493 of file linux/metadata_ipv6_netlink.cc.

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void MetadataProxy::NetlinkAddVhostNb	(	const IpAddress &	nb_ip,
		const MacAddress &	via_mac
	)

Adds a new neighbour (an arp entry) with given IP and MAC addresses.

Parameters

nb_ip	- the IP address of a neighbour
via_mac	- the MAC address of a neighbour

Definition at line 18 of file freebsd/metadata_ipv6_netlink.cc.

bool MetadataProxy::NetlinkGetVhostIp ( Ip6Address & vhost_ll_ip )

Adds an IP address specified in vhost_ll_ip to vhost0 interface inet6 addresses.

Parameters

vhost_ll_ip is a new IP address for vhost0 interface

Returns: true if address has been successfully bound to the interface and false otherwise

Definition at line 359 of file linux/metadata_ipv6_netlink.cc.

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void MetadataProxy::OnAFabricRouteChange	(	DBTablePartBase *	part,
		DBEntryBase *	e
	)

A callback that is invoked each time when a route is modified in the fabric policy VRF inet4 unicast table. The callback is used to update IPv6 address of the metadata link local service. IPv6 address of the service is calculated as: FE80 + IPv4 address, e.g. for IPv4 169.254.169.254, the IPv6 address is FE80::A9FE:A9FE.

Parameters

part	is a pointer to a table partititon containing corresponding modified route
e	is a pointer to the modified InetUnicastRouteEntry

Definition at line 222 of file metadata_proxy_ip6.cc.

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void MetadataProxy::OnAnInterfaceChange	(	DBTablePartBase *	part,
		DBEntryBase *	e
	)

A callback which is invoked everytime any vm interface is changed. Handles deletion of routes associated with a deleted vm interface.

Parameters

part	is a pointer to a table partititon containing corresponding vm interface
e	is a pointer to the vm interface

Definition at line 262 of file metadata_proxy_ip6.cc.

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void MetadataProxy::OnAVrfChange	(	DBTablePartBase *	part,
		DBEntryBase *	e
	)

A callback that is invoked each time when a VRF entry is modified: added, changed or deleted.

Parameters

part	is a pointer to a table partititon containing corresponding VRF entry
e	is a pointer to the modified VrfEntry

Definition at line 199 of file metadata_proxy_ip6.cc.

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void MetadataProxy::OnClientSessionEvent	(	HttpClientSession *	session,
		TcpSession::Event	event
	)

Definition at line 387 of file metadata_proxy.cc.

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void MetadataProxy::OnServerSessionEvent	(	HttpSession *	session,
		TcpSession::Event	event
	)

Definition at line 370 of file metadata_proxy.cc.

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void MetadataProxy::RegisterListeners ( )

Registers callbacks to intercept Agent's events emerging when a VRF entry is modified or an Interface is modified.

Definition at line 281 of file metadata_proxy_ip6.cc.

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void MetadataProxy::Shutdown ( )

Definition at line 123 of file metadata_proxy.cc.

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void MetadataProxy::UnregisterListeners ( )

Unregisters all callbacks that were registered earlier to intercept Agent's events: MetadataProxy::OnAVrfChange, MetadataProxy::OnAFabricPolicyRouteChange, MetadataProxy::OnAnInterfaceChange.

Definition at line 298 of file metadata_proxy_ip6.cc.

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int MetadataProxy::VhostIndex ( const std::string & vhost_name )

Returns index of a network device that is specified by vhost_name.

Parameters

vhost_name is a name of a network device

Returns: integer index of a network device

Definition at line 26 of file metadata_proxy_ip6.cc.

Member Data Documentation

DBTableBase::ListenerId MetadataProxy::fabric_notify_id_

private

an ID of a listener (callback) that acts when a Fabric Policy VRF entry is modified

Definition at line 185 of file metadata_proxy.h.

MetadataClient* MetadataProxy::http_client_

private

Definition at line 170 of file metadata_proxy.h.

MetadataServer* MetadataProxy::http_server6_

private

A pointer to a HTTP server listening on a IPv6 socket for Metadata requests from tenants / virtual machines.

Definition at line 168 of file metadata_proxy.h.

MetadataServer* MetadataProxy::http_server_

private

A pointer to a HTTP server listening on a IPv4 socket for Metadata requests from tenants / virtual machines.

Definition at line 164 of file metadata_proxy.h.

DBTableBase::ListenerId MetadataProxy::intf_table_notify_id_

private

an ID of a listener (callback) that acts when an InterfaceTable entry is modified

Definition at line 189 of file metadata_proxy.h.

Ip6Address MetadataProxy::ipv6_service_address_

private

An IPv6 address on which Metadata6 link local service listens on. We use it instead of IPv4 compute IP.

Definition at line 177 of file metadata_proxy.h.

tbb::mutex MetadataProxy::ll_ipv6_addr_mutex_

private

A mutex which prevents simultaneous access to MetadataProxy::ll_ipv6_addresses_ table and member functions: MetadataProxy::DeleteMetaDataLinkLocalRoute, MetadataProxy::AdvertiseMetaDataLinkLocalRoutes.

Definition at line 201 of file metadata_proxy.h.

std::map<std::string, Ip6Address> MetadataProxy::ll_ipv6_addresses_

private

A correspondence table between a name of a vm interface, which requests a data from the service and the vm interface link local IPv6 address. The table is needed to obtain a link local address of vm interface in the MetadataProxy::DeleteMetaDataLinkLocalRoute function.

Definition at line 195 of file metadata_proxy.h.

ConnectionSessionMap MetadataProxy::metadata_proxy_sessions_

private

Definition at line 172 of file metadata_proxy.h.

SessionMap MetadataProxy::metadata_sessions_

private

Definition at line 171 of file metadata_proxy.h.

MetadataStats MetadataProxy::metadata_stats_

private

Definition at line 173 of file metadata_proxy.h.

ServicesModule* MetadataProxy::services_

private

Definition at line 159 of file metadata_proxy.h.

std::string MetadataProxy::shared_secret_

private

Definition at line 160 of file metadata_proxy.h.

DBTableBase::ListenerId MetadataProxy::vrf_table_notify_id_

private

an ID of a listener (callback) that acts when the VRF Table is modified

Definition at line 181 of file metadata_proxy.h.

The documentation for this class was generated from the following files:

Classes

Public Types

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation