#include <crm_internal.h>
#include <sys/param.h>
#include <sys/types.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <glib.h>
#include <crm/common/ipc.h>
#include <crm/common/xml_internal.h>
#include <crm/cluster/internal.h>
#include <crm/msg_xml.h>
#include <crm/stonith-ng.h>
#include "crmcluster_private.h"
#include <crm/cluster/compat.h>

Include dependency graph for membership.c:

Macros
#define	_GNU_SOURCE

#define	set_peer_flags(peer, flags_to_set)

#define	clear_peer_flags(peer, flags_to_clear)

Functions
int	crm_remote_peer_cache_size (void)

crm_node_t *	crm_remote_peer_get (const char *node_name)
	Get a remote node peer cache entry, creating it if necessary. More...

void	crm_remote_peer_cache_remove (const char *node_name)

void	crm_remote_peer_cache_refresh (xmlNode *cib)
	Repopulate the remote peer cache based on CIB XML. More...

gboolean	crm_is_peer_active (const crm_node_t *node)

guint	reap_crm_member (uint32_t id, const char *name)
	Remove all peer cache entries matching a node ID and/or uname. More...

guint	crm_active_peers (void)

void	crm_peer_init (void)

void	crm_peer_destroy (void)

void	crm_set_status_callback (void(dispatch)(enum crm_status_type, crm_node_t , const void *))
	Set a client function that will be called after peer status changes. More...

void	crm_set_autoreap (gboolean autoreap)
	Tell the library whether to automatically reap lost nodes. More...

crm_node_t *	pcmk__search_node_caches (unsigned int id, const char *uname, uint32_t flags)

crm_node_t *	crm_get_peer_full (unsigned int id, const char *uname, int flags)
	Get a node cache entry (cluster or Pacemaker Remote) More...

crm_node_t *	pcmk__search_cluster_node_cache (unsigned int id, const char *uname)

crm_node_t *	crm_get_peer (unsigned int id, const char *uname)
	Get a cluster node cache entry. More...

crm_node_t *	crm_update_peer_proc (const char source, crm_node_t node, uint32_t flag, const char *status)

void	pcmk__update_peer_expected (const char source, crm_node_t node, const char *expected)

crm_node_t *	pcmk__update_peer_state (const char source, crm_node_t node, const char *state, uint64_t membership)
	Update a node's state and membership information. More...

void	pcmk__reap_unseen_nodes (uint64_t membership)

void	pcmk__refresh_node_caches_from_cib (xmlNode *cib)

crm_node_t *	pcmk__search_known_node_cache (unsigned int id, const char *uname, uint32_t flags)

int	crm_terminate_member (int nodeid, const char uname, void unused)

int	crm_terminate_member_no_mainloop (int nodeid, const char uname, int connection)

Variables
GHashTable *	crm_peer_cache = NULL

GHashTable *	crm_remote_peer_cache = NULL

unsigned long long	crm_peer_seq = 0

gboolean	crm_have_quorum = FALSE

Macro Definition Documentation

◆ _GNU_SOURCE

#define _GNU_SOURCE

Definition at line 13 of file membership.c.

◆ clear_peer_flags

#define clear_peer_flags	(	peer,
		flags_to_clear
	)

Value:

do {                           \
        (peer)->flags = pcmk__clear_flags_as(__func__, __LINE__,              \
                                             LOG_TRACE,                       \
                                             "Peer", (peer)->uname,           \
                                             (peer)->flags, (flags_to_clear), \
                                             #flags_to_clear);                \
    } while (0)

Definition at line 76 of file membership.c.

◆ set_peer_flags

#define set_peer_flags	(	peer,
		flags_to_set
	)

Value:

do {                               \
        (peer)->flags = pcmk__set_flags_as(__func__, __LINE__, LOG_TRACE,     \
                                           "Peer", (peer)->uname,             \
                                           (peer)->flags, (flags_to_set),     \
                                           #flags_to_set);                    \
    } while (0)

Definition at line 69 of file membership.c.

Function Documentation

◆ crm_active_peers()

guint crm_active_peers ( void )

Definition at line 376 of file membership.c.

◆ crm_get_peer()

crm_node_t* crm_get_peer	(	unsigned int	id,
		const char *	uname
	)

Get a cluster node cache entry.

Parameters

[in]	id	If not 0, cluster node ID to search for
[in]	uname	If not NULL, node name to search for

Returns: (Possibly newly created) cluster node cache entry

Definition at line 702 of file membership.c.

◆ crm_get_peer_full()

crm_node_t* crm_get_peer_full	(	unsigned int	id,
		const char *	uname,
		int	flags
	)

Get a node cache entry (cluster or Pacemaker Remote)

Parameters

[in]	id	If not 0, cluster node ID to search for
[in]	uname	If not NULL, node name to search for
[in]	flags	Bitmask of enum crm_get_peer_flags

Returns: (Possibly newly created) node cache entry

Definition at line 534 of file membership.c.

◆ crm_is_peer_active()

gboolean crm_is_peer_active ( const crm_node_t * node )

Definition at line 283 of file membership.c.

◆ crm_peer_destroy()

void crm_peer_destroy ( void )

Definition at line 417 of file membership.c.

◆ crm_peer_init()

void crm_peer_init ( void )

Definition at line 401 of file membership.c.

◆ crm_remote_peer_cache_refresh()

void crm_remote_peer_cache_refresh ( xmlNode * cib )

Repopulate the remote peer cache based on CIB XML.

Parameters

[in] xmlNode CIB XML to parse

Definition at line 245 of file membership.c.

◆ crm_remote_peer_cache_remove()

void crm_remote_peer_cache_remove ( const char * node_name )

Definition at line 147 of file membership.c.

◆ crm_remote_peer_cache_size()

int crm_remote_peer_cache_size ( void )

Definition at line 87 of file membership.c.

◆ crm_remote_peer_get()

crm_node_t* crm_remote_peer_get ( const char * node_name )

Get a remote node peer cache entry, creating it if necessary.

Parameters

[in] node_name Name of remote node

Returns: Cache entry for node on success, NULL (and set errno) otherwise

Note: When creating a new entry, this will leave the node state undetermined, so the caller should also call pcmk__update_peer_state() if the state is known.

Definition at line 107 of file membership.c.

◆ crm_set_autoreap()

void crm_set_autoreap ( gboolean autoreap )

Tell the library whether to automatically reap lost nodes.

If TRUE (the default), calling crm_update_peer_proc() will also update the peer state to CRM_NODE_MEMBER or CRM_NODE_LOST, and pcmk__update_peer_state() will reap peers whose state changes to anything other than CRM_NODE_MEMBER. Callers should leave this enabled unless they plan to manage the cache separately on their own.

Parameters

[in] autoreap TRUE to enable automatic reaping, FALSE to disable

Definition at line 471 of file membership.c.

◆ crm_set_status_callback()

void crm_set_status_callback ( void(*)(enum crm_status_type, crm_node_t *, const void *) dispatch )

Set a client function that will be called after peer status changes.

Parameters

[in] dispatch Pointer to function to use as callback

Note: Previously, client callbacks were responsible for peer cache management. This is no longer the case, and client callbacks should do only client-specific handling. Callbacks MUST NOT add or remove entries in the peer caches.

Definition at line 454 of file membership.c.

◆ crm_terminate_member()

int crm_terminate_member	(	int	nodeid,
		const char *	uname,
		void *	unused
	)

Definition at line 1296 of file membership.c.

◆ crm_terminate_member_no_mainloop()

int crm_terminate_member_no_mainloop	(	int	nodeid,
		const char *	uname,
		int *	connection
	)

Definition at line 1302 of file membership.c.

◆ crm_update_peer_proc()

crm_node_t* crm_update_peer_proc	(	const char *	source,
		crm_node_t *	node,
		uint32_t	flag,
		const char *	status
	)

Definition at line 876 of file membership.c.

◆ pcmk__reap_unseen_nodes()

void pcmk__reap_unseen_nodes ( uint64_t membership )

Definition at line 1092 of file membership.c.

◆ pcmk__refresh_node_caches_from_cib()

void pcmk__refresh_node_caches_from_cib ( xmlNode * cib )

Definition at line 1248 of file membership.c.

◆ pcmk__search_cluster_node_cache()

crm_node_t* pcmk__search_cluster_node_cache	(	unsigned int	id,
		const char *	uname
	)

Definition at line 562 of file membership.c.

◆ pcmk__search_known_node_cache()

crm_node_t* pcmk__search_known_node_cache	(	unsigned int	id,
		const char *	uname,
		uint32_t	flags
	)

Definition at line 1265 of file membership.c.

◆ pcmk__search_node_caches()

crm_node_t* pcmk__search_node_caches	(	unsigned int	id,
		const char *	uname,
		uint32_t	flags
	)

Definition at line 506 of file membership.c.

◆ pcmk__update_peer_expected()

void pcmk__update_peer_expected	(	const char *	source,
		crm_node_t *	node,
		const char *	expected
	)

Definition at line 963 of file membership.c.

◆ pcmk__update_peer_state()

crm_node_t* pcmk__update_peer_state	(	const char *	source,
		crm_node_t *	node,
		const char *	state,
		uint64_t	membership
	)

Update a node's state and membership information.

Parameters

[in]	source	Caller's function name (for log messages)
[in]	node	Node object to update
[in]	state	Node's new state
[in]	membership	Node's new membership ID

Returns: NULL if any node was reaped, value of node otherwise

Note: If this function returns NULL, the supplied node object was likely freed and should not be used again. This function should not be called within a cache iteration if reaping is possible, otherwise reaping could invalidate the iterator.

Definition at line 1079 of file membership.c.

◆ reap_crm_member()

guint reap_crm_member	(	uint32_t	id,
		const char *	name
	)

Remove all peer cache entries matching a node ID and/or uname.

Parameters

[in]	id	ID of node to remove (or 0 to ignore)
[in]	name	Uname of node to remove (or NULL to ignore)

Returns: Number of cache entries removed

Definition at line 335 of file membership.c.

Variable Documentation

◆ crm_have_quorum

gboolean crm_have_quorum = FALSE

Definition at line 64 of file membership.c.

◆ crm_peer_cache

GHashTable* crm_peer_cache = NULL

Definition at line 36 of file membership.c.

◆ crm_peer_seq

unsigned long long crm_peer_seq = 0

Definition at line 63 of file membership.c.

◆ crm_remote_peer_cache

GHashTable* crm_remote_peer_cache = NULL

Definition at line 53 of file membership.c.

Macros

Functions

Variables

Macro Definition Documentation

◆ _GNU_SOURCE

◆ clear_peer_flags

◆ set_peer_flags

Function Documentation

◆ crm_active_peers()

◆ crm_get_peer()

◆ crm_get_peer_full()

◆ crm_is_peer_active()

◆ crm_peer_destroy()

◆ crm_peer_init()

◆ crm_remote_peer_cache_refresh()

◆ crm_remote_peer_cache_remove()

◆ crm_remote_peer_cache_size()

◆ crm_remote_peer_get()

◆ crm_set_autoreap()

◆ crm_set_status_callback()

◆ crm_terminate_member()

◆ crm_terminate_member_no_mainloop()

◆ crm_update_peer_proc()

◆ pcmk__reap_unseen_nodes()

◆ pcmk__refresh_node_caches_from_cib()

◆ pcmk__search_cluster_node_cache()

◆ pcmk__search_known_node_cache()

◆ pcmk__search_node_caches()

◆ pcmk__update_peer_expected()

◆ pcmk__update_peer_state()

◆ reap_crm_member()

Variable Documentation

◆ crm_have_quorum

◆ crm_peer_cache

◆ crm_peer_seq

◆ crm_remote_peer_cache