status.h
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status.h
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	/*
	* Copyright 2004-2018 Andrew Beekhof <andrew@beekhof.net>
	*
	* This source code is licensed under the GNU Lesser General Public License
	* version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
	*/

	#ifndef PENGINE_STATUS__H
	# define PENGINE_STATUS__H

	#ifdef __cplusplus
	extern "C" {
	#endif

	# include <glib.h>
	# include <stdbool.h>
	# include <crm/common/iso8601.h>
	# include <crm/pengine/common.h>

	typedef struct pe_node_s pe_node_t;
	typedef struct pe_action_s pe_action_t;
	typedef struct pe_resource_s pe_resource_t;
	typedef struct pe_working_set_s pe_working_set_t;

	# include <crm/pengine/complex.h>

	enum pe_quorum_policy {
	no_quorum_freeze,
	no_quorum_stop,
	no_quorum_ignore,
	no_quorum_suicide
	};

	enum node_type {
	node_ping,
	node_member,
	node_remote
	};

	enum pe_restart {
	pe_restart_restart,
	pe_restart_ignore
	};

	enum pe_find {
	pe_find_renamed = 0x001, // match resource ID or LRM history ID
	pe_find_anon = 0x002, // match base name of anonymous clone instances
	pe_find_clone = 0x004, // match only clone instances
	pe_find_current = 0x008, // match resource active on specified node
	pe_find_inactive = 0x010, // match resource not running anywhere
	pe_find_any = 0x020, // match base name of any clone instance
	};

	# define pe_flag_have_quorum 0x00000001ULL
	# define pe_flag_symmetric_cluster 0x00000002ULL
	# define pe_flag_maintenance_mode 0x00000008ULL

	# define pe_flag_stonith_enabled 0x00000010ULL
	# define pe_flag_have_stonith_resource 0x00000020ULL
	# define pe_flag_enable_unfencing 0x00000040ULL
	# define pe_flag_concurrent_fencing 0x00000080ULL

	# define pe_flag_stop_rsc_orphans 0x00000100ULL
	# define pe_flag_stop_action_orphans 0x00000200ULL
	# define pe_flag_stop_everything 0x00000400ULL

	# define pe_flag_start_failure_fatal 0x00001000ULL
	# define pe_flag_remove_after_stop 0x00002000ULL
	# define pe_flag_startup_fencing 0x00004000ULL

	# define pe_flag_startup_probes 0x00010000ULL
	# define pe_flag_have_status 0x00020000ULL
	# define pe_flag_have_remote_nodes 0x00040000ULL

	# define pe_flag_quick_location 0x00100000ULL
	# define pe_flag_sanitized 0x00200000ULL
	# define pe_flag_stdout 0x00400000ULL

	struct pe_working_set_s {
	xmlNode *input;
	crm_time_t *now;

	/* options extracted from the input */
	char *dc_uuid;
	pe_node_t *dc_node;
	const char *stonith_action;
	const char *placement_strategy;

	unsigned long long flags;

	int stonith_timeout;
	enum pe_quorum_policy no_quorum_policy;

	GHashTable *config_hash;
	GHashTable *tickets;

	// Actions for which there can be only one (e.g. fence nodeX)
	GHashTable *singletons;

	GListPtr nodes;
	GListPtr resources;
	GListPtr placement_constraints;
	GListPtr ordering_constraints;
	GListPtr colocation_constraints;
	GListPtr ticket_constraints;

	GListPtr actions;
	xmlNode *failed;
	xmlNode *op_defaults;
	xmlNode *rsc_defaults;

	/* stats */
	int num_synapse;
	int max_valid_nodes;
	int order_id;
	int action_id;

	/* final output */
	xmlNode *graph;

	GHashTable *template_rsc_sets;
	const char *localhost;
	GHashTable *tags;

	int blocked_resources;
	int disabled_resources;
	};

	struct pe_node_shared_s {
	const char *id;
	const char *uname;
	enum node_type type;

	/* @TODO convert these flags into a bitfield */
	gboolean online;
	gboolean standby;
	gboolean standby_onfail;
	gboolean pending;
	gboolean unclean;
	gboolean unseen;
	gboolean shutdown;
	gboolean expected_up;
	gboolean is_dc;
	gboolean maintenance;
	gboolean rsc_discovery_enabled;
	gboolean remote_requires_reset;
	gboolean remote_was_fenced;
	gboolean remote_maintenance; /* what the remote-rsc is thinking */
	gboolean unpacked;

	int num_resources;
	pe_resource_t *remote_rsc;
	GListPtr running_rsc; /* pe_resource_t* */
	GListPtr allocated_rsc; /* pe_resource_t* */

	GHashTable attrs; / char* => char* */
	GHashTable *utilization;
	GHashTable digest_cache; /! cache of calculated resource digests */
	};

	struct pe_node_s {
	int weight;
	gboolean fixed;
	int count;
	struct pe_node_shared_s *details;
	int rsc_discover_mode;
	};

	# define pe_rsc_orphan 0x00000001ULL
	# define pe_rsc_managed 0x00000002ULL
	# define pe_rsc_block 0x00000004ULL
	# define pe_rsc_orphan_container_filler 0x00000008ULL

	# define pe_rsc_notify 0x00000010ULL
	# define pe_rsc_unique 0x00000020ULL
	# define pe_rsc_fence_device 0x00000040ULL
	# define pe_rsc_promotable 0x00000080ULL

	# define pe_rsc_provisional 0x00000100ULL
	# define pe_rsc_allocating 0x00000200ULL
	# define pe_rsc_merging 0x00000400ULL

	# define pe_rsc_reload 0x00002000ULL
	# define pe_rsc_allow_remote_remotes 0x00004000ULL

	# define pe_rsc_failed 0x00010000ULL
	# define pe_rsc_runnable 0x00040000ULL
	# define pe_rsc_start_pending 0x00080000ULL

	# define pe_rsc_starting 0x00100000ULL
	# define pe_rsc_stopping 0x00200000ULL
	# define pe_rsc_allow_migrate 0x00800000ULL

	# define pe_rsc_failure_ignored 0x01000000ULL
	# define pe_rsc_maintenance 0x04000000ULL
	# define pe_rsc_is_container 0x08000000ULL

	# define pe_rsc_needs_quorum 0x10000000ULL
	# define pe_rsc_needs_fencing 0x20000000ULL
	# define pe_rsc_needs_unfencing 0x40000000ULL

	enum pe_graph_flags {
	pe_graph_none = 0x00000,
	pe_graph_updated_first = 0x00001,
	pe_graph_updated_then = 0x00002,
	pe_graph_disable = 0x00004,
	};

	/* INDENT-OFF */
	enum pe_action_flags {
	pe_action_pseudo = 0x00001,
	pe_action_runnable = 0x00002,
	pe_action_optional = 0x00004,
	pe_action_print_always = 0x00008,

	pe_action_have_node_attrs = 0x00010,
	pe_action_implied_by_stonith = 0x00040,
	pe_action_migrate_runnable = 0x00080,

	pe_action_dumped = 0x00100,
	pe_action_processed = 0x00200,
	pe_action_clear = 0x00400,
	pe_action_dangle = 0x00800,

	/* This action requires one or more of its dependencies to be runnable.
	* We use this to clear the runnable flag before checking dependencies.
	*/
	pe_action_requires_any = 0x01000,

	pe_action_reschedule = 0x02000,
	pe_action_tracking = 0x04000,
	};
	/* INDENT-ON */

	struct pe_resource_s {
	char *id;
	char *clone_name;
	xmlNode *xml;
	xmlNode *orig_xml;
	xmlNode *ops_xml;

	pe_working_set_t *cluster;
	pe_resource_t *parent;

	enum pe_obj_types variant;
	void *variant_opaque;
	resource_object_functions_t *fns;
	resource_alloc_functions_t *cmds;

	enum rsc_recovery_type recovery_type;
	enum pe_restart restart_type;

	int priority;
	int stickiness;
	int sort_index;
	int failure_timeout;
	int migration_threshold;
	guint remote_reconnect_ms;
	char *pending_task;

	unsigned long long flags;

	// @TODO merge these into flags
	gboolean is_remote_node;
	gboolean exclusive_discover;

	// These fields should be treated as internal to Pacemaker
	GListPtr rsc_cons_lhs; /* rsc_colocation_t* */
	GListPtr rsc_cons; /* rsc_colocation_t* */
	GListPtr rsc_location; // List of pe__location_t*
	GListPtr actions; /* pe_action_t* */
	GListPtr rsc_tickets; /* rsc_ticket* */

	pe_node_t *allocated_to;
	pe_node_t *partial_migration_target;
	pe_node_t *partial_migration_source;
	GListPtr running_on; /* pe_node_t* */
	GHashTable known_on; / pe_node_t* */
	GHashTable allowed_nodes; / pe_node_t* */

	enum rsc_role_e role;
	enum rsc_role_e next_role;

	GHashTable *meta;
	GHashTable *parameters;
	GHashTable *utilization;

	GListPtr children; /* pe_resource_t* */
	GListPtr dangling_migrations; /* pe_node_t* */

	pe_resource_t *container;
	GListPtr fillers;

	pe_node_t *pending_node; // Node on which pending_task is happening

	#if ENABLE_VERSIONED_ATTRS
	xmlNode *versioned_parameters;
	#endif
	};

	#if ENABLE_VERSIONED_ATTRS
	// Used as action->action_details if action->rsc is not NULL
	typedef struct pe_rsc_action_details_s {
	xmlNode *versioned_parameters;
	xmlNode *versioned_meta;
	} pe_rsc_action_details_t;
	#endif

	struct pe_action_s {
	int id;
	int priority;

	pe_resource_t *rsc;
	pe_node_t *node;
	xmlNode *op_entry;

	char *task;
	char *uuid;
	char *cancel_task;
	char *reason;

	enum pe_action_flags flags;
	enum rsc_start_requirement needs;
	enum action_fail_response on_fail;
	enum rsc_role_e fail_role;

	GHashTable *meta;
	GHashTable *extra;

	/*
	* These two varables are associated with the constraint logic
	* that involves first having one or more actions runnable before
	* then allowing this action to execute.
	*
	* These varables are used with features such as 'clone-min' which
	* requires at minimum X number of cloned instances to be running
	* before an order dependency can run. Another option that uses
	* this is 'require-all=false' in ordering constrants. This option
	* says "only require one instance of a resource to start before
	* allowing dependencies to start" -- basically, require-all=false is
	* the same as clone-min=1.
	*/

	/* current number of known runnable actions in the before list. */
	int runnable_before;
	/* the number of "before" runnable actions required for this action
	* to be considered runnable */
	int required_runnable_before;

	GListPtr actions_before; /* pe_action_wrapper_t* */
	GListPtr actions_after; /* pe_action_wrapper_t* */

	/* Some of the above fields could be moved to the details,
	* except for API backward compatibility.
	*/
	void *action_details; // varies by type of action
	};

	typedef struct pe_ticket_s {
	char *id;
	gboolean granted;
	time_t last_granted;
	gboolean standby;
	GHashTable *state;
	} pe_ticket_t;

	typedef struct pe_tag_s {
	char *id;
	GListPtr refs;
	} pe_tag_t;

	enum pe_link_state {
	pe_link_not_dumped,
	pe_link_dumped,
	pe_link_dup,
	};

	enum pe_discover_e {
	pe_discover_always = 0,
	pe_discover_never,
	pe_discover_exclusive,
	};

	/* INDENT-OFF */
	enum pe_ordering {
	pe_order_none = 0x0, /* deleted */
	pe_order_optional = 0x1, /* pure ordering, nothing implied */
	pe_order_apply_first_non_migratable = 0x2, /* Only apply this constraint's ordering if first is not migratable. */

	pe_order_implies_first = 0x10, /* If 'then' is required, ensure 'first' is too */
	pe_order_implies_then = 0x20, /* If 'first' is required, ensure 'then' is too */
	pe_order_implies_first_master = 0x40, /* Imply 'first' is required when 'then' is required and then's rsc holds Master role. */

	/* first requires then to be both runnable and migrate runnable. */
	pe_order_implies_first_migratable = 0x80,

	pe_order_runnable_left = 0x100, /* 'then' requires 'first' to be runnable */

	pe_order_pseudo_left = 0x200, /* 'then' can only be pseudo if 'first' is runnable */
	pe_order_implies_then_on_node = 0x400, /* If 'first' is required on 'nodeX',
	* ensure instances of 'then' on 'nodeX' are too.
	* Only really useful if 'then' is a clone and 'first' is not
	*/
	pe_order_probe = 0x800, /* If 'first->rsc' is
	* - running but about to stop, ignore the constraint
	* - otherwise, behave as runnable_left
	*/

	pe_order_restart = 0x1000, /* 'then' is runnable if 'first' is optional or runnable */
	pe_order_stonith_stop = 0x2000, /* only applies if the action is non-pseudo */
	pe_order_serialize_only = 0x4000, /* serialize */
	pe_order_same_node = 0x8000, /* applies only if 'first' and 'then' are on same node */

	pe_order_implies_first_printed = 0x10000, /* Like ..implies_first but only ensures 'first' is printed, not mandatory */
	pe_order_implies_then_printed = 0x20000, /* Like ..implies_then but only ensures 'then' is printed, not mandatory */

	pe_order_asymmetrical = 0x100000, /* Indicates asymmetrical one way ordering constraint. */
	pe_order_load = 0x200000, /* Only relevant if... */
	pe_order_one_or_more = 0x400000, /* 'then' is runnable only if one or more of its dependencies are too */
	pe_order_anti_colocation = 0x800000,

	pe_order_preserve = 0x1000000, /* Hack for breaking user ordering constraints with container resources */
	pe_order_then_cancels_first = 0x2000000, // if 'then' becomes required, 'first' becomes optional
	pe_order_trace = 0x4000000, /* test marker */
	};
	/* INDENT-ON */

	typedef struct pe_action_wrapper_s {
	enum pe_ordering type;
	enum pe_link_state state;
	pe_action_t *action;
	} pe_action_wrapper_t;

	const char rsc_printable_id(pe_resource_t rsc);
	gboolean cluster_status(pe_working_set_t * data_set);
	void set_working_set_defaults(pe_working_set_t * data_set);
	void cleanup_calculations(pe_working_set_t * data_set);
	void pe_reset_working_set(pe_working_set_t *data_set);
	pe_resource_t pe_find_resource(GListPtr rsc_list, const char id_rh);
	pe_resource_t pe_find_resource_with_flags(GListPtr rsc_list, const char id, enum pe_find flags);
	pe_node_t pe_find_node(GListPtr node_list, const char uname);
	pe_node_t pe_find_node_id(GListPtr node_list, const char id);
	pe_node_t pe_find_node_any(GListPtr node_list, const char id, const char *uname);
	GListPtr find_operations(const char rsc, const char node, gboolean active_filter,
	pe_working_set_t * data_set);
	int pe_bundle_replicas(const pe_resource_t *rsc);
	#if ENABLE_VERSIONED_ATTRS
	pe_rsc_action_details_t pe_rsc_action_details(pe_action_t action);
	#endif

	/*!
	* \brief Check whether a resource is any clone type
	*
	* \param[in] rsc Resource to check
	*
	* \return TRUE if resource is clone, FALSE otherwise
	*/
	static inline bool
	pe_rsc_is_clone(pe_resource_t *rsc)
	{
	return rsc && (rsc->variant == pe_clone);
	}

	/*!
	* \brief Check whether a resource is a globally unique clone
	*
	* \param[in] rsc Resource to check
	*
	* \return TRUE if resource is unique clone, FALSE otherwise
	*/
	static inline bool
	pe_rsc_is_unique_clone(pe_resource_t *rsc)
	{
	return pe_rsc_is_clone(rsc) && is_set(rsc->flags, pe_rsc_unique);
	}

	/*!
	* \brief Check whether a resource is an anonymous clone
	*
	* \param[in] rsc Resource to check
	*
	* \return TRUE if resource is anonymous clone, FALSE otherwise
	*/
	static inline bool
	pe_rsc_is_anon_clone(pe_resource_t *rsc)
	{
	return pe_rsc_is_clone(rsc) && is_not_set(rsc->flags, pe_rsc_unique);
	}

	static inline bool
	pe_rsc_is_bundled(pe_resource_t *rsc)
	{
	return uber_parent(rsc)->parent != NULL;
	}

	// Deprecated type aliases
	typedef struct pe_action_s action_t;
	typedef struct pe_action_wrapper_s action_wrapper_t;
	typedef struct pe_node_s node_t;
	typedef struct pe_resource_s resource_t;
	typedef struct pe_tag_s tag_t;
	typedef struct pe_ticket_s ticket_t;
	typedef enum pe_quorum_policy no_quorum_policy_t;

	#ifdef __cplusplus
	}
	#endif

	#endif

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