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cluster.h
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/*
* Copyright 2004-2021 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU Lesser General Public License
* version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
*/
#ifndef PCMK__CRM_CLUSTER__H
# define PCMK__CRM_CLUSTER__H
# include <stdint.h> // uint32_t, uint64_t
# include <glib.h> // gboolean, GHashTable
# include <libxml/tree.h> // xmlNode
# include <crm/common/xml.h>
# include <crm/common/util.h>
#ifdef __cplusplus
extern "C" {
#endif
# if SUPPORT_COROSYNC
# include <corosync/cpg.h>
# endif
extern gboolean crm_have_quorum;
extern GHashTable *crm_peer_cache;
extern GHashTable *crm_remote_peer_cache;
extern unsigned long long crm_peer_seq;
#define CRM_NODE_LOST "lost"
#define CRM_NODE_MEMBER "member"
enum crm_join_phase {
crm_join_nack = -1,
crm_join_none = 0,
crm_join_welcomed = 1,
crm_join_integrated = 2,
crm_join_finalized = 3,
crm_join_confirmed = 4,
};
enum crm_node_flags {
/* node is not a cluster node and should not be considered for cluster membership */
crm_remote_node = 0x0001,
/* node's cache entry is dirty */
crm_node_dirty = 0x0010,
};
typedef struct crm_peer_node_s {
char *uname; // Node name as known to cluster
char *uuid; // Node UUID to ensure uniqueness
char *state; // @TODO change to enum
uint64_t flags; // Bitmask of crm_node_flags
uint64_t last_seen; // Only needed by cluster nodes
uint32_t processes; // @TODO most not needed, merge into flags
/* @TODO When we can break public API compatibility, we can make the rest of
* these members separate structs and use void *cluster_data and
* void *user_data here instead, to abstract the cluster layer further.
*/
// Currently only needed by corosync stack
uint32_t id; // Node ID
time_t when_lost; // When CPG membership was last lost
// Only used by controller
enum crm_join_phase join;
char *expected;
} crm_node_t;
void crm_peer_init(void);
void crm_peer_destroy(void);
typedef struct crm_cluster_s {
char *uuid;
char *uname;
uint32_t nodeid;
void (*destroy) (gpointer);
# if SUPPORT_COROSYNC
/* @TODO When we can break public API compatibility, make these members a
* separate struct and use void *cluster_data here instead, to abstract the
* cluster layer further.
*/
struct cpg_name group;
cpg_callbacks_t cpg;
cpg_handle_t cpg_handle;
# endif
} crm_cluster_t;
gboolean crm_cluster_connect(crm_cluster_t *cluster);
void crm_cluster_disconnect(crm_cluster_t *cluster);
enum crm_ais_msg_class {
crm_class_cluster = 0,
};
enum crm_ais_msg_types {
crm_msg_none = 0,
crm_msg_ais = 1,
crm_msg_lrmd = 2,
crm_msg_cib = 3,
crm_msg_crmd = 4,
crm_msg_attrd = 5,
crm_msg_stonithd = 6,
crm_msg_te = 7,
crm_msg_pe = 8,
crm_msg_stonith_ng = 9,
};
/* used with crm_get_peer_full */
enum crm_get_peer_flags {
CRM_GET_PEER_CLUSTER = 0x0001,
CRM_GET_PEER_REMOTE = 0x0002,
CRM_GET_PEER_ANY = CRM_GET_PEER_CLUSTER|CRM_GET_PEER_REMOTE,
};
gboolean send_cluster_message(crm_node_t *node, enum crm_ais_msg_types service,
xmlNode *data, gboolean ordered);
int crm_remote_peer_cache_size(void);
/* Initialize and refresh the remote peer cache from a cib config */
void crm_remote_peer_cache_refresh(xmlNode *cib);
crm_node_t *crm_remote_peer_get(const char *node_name);
void crm_remote_peer_cache_remove(const char *node_name);
/* allows filtering of remote and cluster nodes using crm_get_peer_flags */
crm_node_t *crm_get_peer_full(unsigned int id, const char *uname, int flags);
/* only searches cluster nodes */
crm_node_t *crm_get_peer(unsigned int id, const char *uname);
guint crm_active_peers(void);
gboolean crm_is_peer_active(const crm_node_t * node);
guint reap_crm_member(uint32_t id, const char *name);
# if SUPPORT_COROSYNC
uint32_t get_local_nodeid(cpg_handle_t handle);
gboolean cluster_connect_cpg(crm_cluster_t *cluster);
void cluster_disconnect_cpg(crm_cluster_t * cluster);
void pcmk_cpg_membership(cpg_handle_t handle,
const struct cpg_name *groupName,
const struct cpg_address *member_list, size_t member_list_entries,
const struct cpg_address *left_list, size_t left_list_entries,
const struct cpg_address *joined_list, size_t joined_list_entries);
gboolean crm_is_corosync_peer_active(const crm_node_t * node);
gboolean send_cluster_text(enum crm_ais_msg_class msg_class, const char *data,
gboolean local, crm_node_t * node,
enum crm_ais_msg_types dest);
char *pcmk_message_common_cs(cpg_handle_t handle, uint32_t nodeid, uint32_t pid, void *msg,
uint32_t *kind, const char **from);
# endif
const char *crm_peer_uuid(crm_node_t *node);
const char *crm_peer_uname(const char *uuid);
void set_uuid(xmlNode *xml, const char *attr, crm_node_t *node);
enum crm_status_type {
crm_status_uname,
crm_status_nstate,
crm_status_processes,
};
enum crm_ais_msg_types text2msg_type(const char *text);
void crm_set_status_callback(void (*dispatch) (enum crm_status_type, crm_node_t *, const void *));
void crm_set_autoreap(gboolean autoreap);
enum cluster_type_e {
pcmk_cluster_unknown = 0x0001,
pcmk_cluster_invalid = 0x0002,
// 0x0004 was heartbeat
// 0x0010 was corosync 1 with plugin
pcmk_cluster_corosync = 0x0020,
// 0x0040 was corosync 1 with CMAN
};
enum cluster_type_e get_cluster_type(void);
const char *name_for_cluster_type(enum cluster_type_e type);
gboolean is_corosync_cluster(void);
const char *get_local_node_name(void);
char *get_node_name(uint32_t nodeid);
/*!
* \brief Get log-friendly string equivalent of a join phase
*
* \param[in] phase Join phase
*
* \return Log-friendly string equivalent of \p phase
*/
static inline const char *
crm_join_phase_str(enum crm_join_phase phase)
{
switch (phase) {
case crm_join_nack: return "nack";
case crm_join_none: return "none";
case crm_join_welcomed: return "welcomed";
case crm_join_integrated: return "integrated";
case crm_join_finalized: return "finalized";
case crm_join_confirmed: return "confirmed";
}
return "invalid";
}
#if !defined(PCMK_ALLOW_DEPRECATED) || (PCMK_ALLOW_DEPRECATED == 1)
#include <crm/cluster/compat.h>
#endif
#ifdef __cplusplus
}
#endif
#endif
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