daemons/controld/controld

/* */
   1 /*
   2  * Copyright 2004-2021 the Pacemaker project contributors
   3  *
   4  * The version control history for this file may have further details.
   5  *
   6  * This source code is licensed under the GNU Lesser General Public License
   7  * version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
   8  */
   9 #ifndef CONTROLD_LRM__H
  10 #  define CONTROLD_LRM__H
  11 
  12 #include <controld_messages.h>
  13 
  14 extern gboolean verify_stopped(enum crmd_fsa_state cur_state, int log_level);
  15 void lrm_clear_last_failure(const char *rsc_id, const char *node_name,
  16                             const char *operation, guint interval_ms);
  17 void lrm_op_callback(lrmd_event_data_t * op);
  18 lrmd_t *crmd_local_lrmd_conn(void);
  19 
  20 typedef struct resource_history_s {
  21     char *id;
  22     uint32_t last_callid;
  23     lrmd_rsc_info_t rsc;
  24     lrmd_event_data_t *last;
  25     lrmd_event_data_t *failed;
  26     GList *recurring_op_list;
  27 
  28     /* Resources must be stopped using the same
  29      * parameters they were started with.  This hashtable
  30      * holds the parameters that should be used for the next stop
  31      * cmd on this resource. */
  32     GHashTable *stop_params;
  33 } rsc_history_t;
  34 
  35 void history_free(gpointer data);
  36 
  37 enum active_op_e {
  38     active_op_remove    = (1 << 0),
  39     active_op_cancelled = (1 << 1),
  40 };
  41 
  42 // In-flight action (recurring or pending)
  43 typedef struct active_op_s {
  44     guint interval_ms;
  45     int call_id;
  46     uint32_t flags; // bitmask of active_op_e
  47     time_t start_time;
  48     time_t lock_time;
  49     char *rsc_id;
  50     char *op_type;
  51     char *op_key;
  52     char *user_data;
  53     GHashTable *params;
  54 } active_op_t;
  55 
  56 #define controld_set_active_op_flags(active_op, flags_to_set) do {          \
  57         (active_op)->flags = pcmk__set_flags_as(__func__, __LINE__,         \
  58             LOG_TRACE, "Active operation", (active_op)->op_key,             \
  59             (active_op)->flags, (flags_to_set), #flags_to_set);             \
  60     } while (0)
  61 
  62 #define controld_clear_active_op_flags(active_op, flags_to_clear) do {      \
  63         (active_op)->flags = pcmk__clear_flags_as(__func__, __LINE__,       \
  64             LOG_TRACE, "Active operation", (active_op)->op_key,             \
  65             (active_op)->flags, (flags_to_clear), #flags_to_clear);         \
  66     } while (0)
  67 
  68 typedef struct lrm_state_s {
  69     const char *node_name;
  70     void *conn;                 // Reserved for controld_execd_state.c usage
  71     void *remote_ra_data;       // Reserved for controld_remote_ra.c usage
  72 
  73     GHashTable *resource_history;
  74     GHashTable *pending_ops;
  75     GHashTable *deletion_ops;
  76     GHashTable *rsc_info_cache;
  77     GHashTable *metadata_cache; // key = class[:provider]:agent, value = ra_metadata_s
  78 
  79     int num_lrm_register_fails;
  80 } lrm_state_t;
  81 
  82 struct pending_deletion_op_s {
  83     char *rsc;
  84     ha_msg_input_t *input;
  85 };
  86 
  87 /*!
  88  * \brief Check whether this the local IPC connection to the executor
  89  */
  90 gboolean
  91 lrm_state_is_local(lrm_state_t *lrm_state);
  92 
  93 /*!
  94  * \brief Clear all state information from a single state entry.
  95  * \note It sometimes useful to save metadata cache when it won't go stale.
  96  * \note This does not close the executor connection
  97  */
  98 void lrm_state_reset_tables(lrm_state_t * lrm_state, gboolean reset_metadata);
  99 GList *lrm_state_get_list(void);
 100 
 101 /*!
 102  * \brief Initiate internal state tables
 103  */
 104 gboolean lrm_state_init_local(void);
 105 
 106 /*!
 107  * \brief Destroy all state entries and internal state tables
 108  */
 109 void lrm_state_destroy_all(void);
 110 
 111 /*!
 112  * \brief Create executor connection entry
 113  */
 114 lrm_state_t *lrm_state_create(const char *node_name);
 115 
 116 /*!
 117  * \brief Destroy executor connection by node name
 118  */
 119 void lrm_state_destroy(const char *node_name);
 120 
 121 /*!
 122  * \brief Find lrm_state data by node name
 123  */
 124 lrm_state_t *lrm_state_find(const char *node_name);
 125 
 126 /*!
 127  * \brief Either find or create a new entry
 128  */
 129 lrm_state_t *lrm_state_find_or_create(const char *node_name);
 130 
 131 /*!
 132  * The functions below are wrappers for the executor API the the controller
 133  * uses. These wrapper functions allow us to treat the controller's remote
 134  * executor connection resources the same as regular resources. Internally,
 135  * regular resources go to the executor, and remote connection resources are
 136  * handled locally in the controller.
 137  */
 138 void lrm_state_disconnect_only(lrm_state_t * lrm_state);
 139 void lrm_state_disconnect(lrm_state_t * lrm_state);
 140 int lrm_state_ipc_connect(lrm_state_t * lrm_state);
 141 int lrm_state_remote_connect_async(lrm_state_t * lrm_state, const char *server, int port,
 142                                    int timeout);
 143 int lrm_state_is_connected(lrm_state_t * lrm_state);
 144 int lrm_state_poke_connection(lrm_state_t * lrm_state);
 145 
 146 int lrm_state_get_metadata(lrm_state_t * lrm_state,
 147                            const char *class,
 148                            const char *provider,
 149                            const char *agent, char **output, enum lrmd_call_options options);
 150 int lrm_state_cancel(lrm_state_t *lrm_state, const char *rsc_id,
 151                      const char *action, guint interval_ms);
 152 int lrm_state_exec(lrm_state_t *lrm_state, const char *rsc_id,
 153                    const char *action, const char *userdata, guint interval_ms,
 154                    int timeout, /* ms */
 155                    int start_delay,     /* ms */
 156                    lrmd_key_value_t * params);
 157 lrmd_rsc_info_t *lrm_state_get_rsc_info(lrm_state_t * lrm_state,
 158                                         const char *rsc_id, enum lrmd_call_options options);
 159 int lrm_state_register_rsc(lrm_state_t * lrm_state,
 160                            const char *rsc_id,
 161                            const char *class,
 162                            const char *provider, const char *agent, enum lrmd_call_options options);
 163 int lrm_state_unregister_rsc(lrm_state_t * lrm_state,
 164                              const char *rsc_id, enum lrmd_call_options options);
 165 
 166 // Functions used to manage remote executor connection resources
 167 void remote_lrm_op_callback(lrmd_event_data_t * op);
 168 gboolean is_remote_lrmd_ra(const char *agent, const char *provider, const char *id);
 169 lrmd_rsc_info_t *remote_ra_get_rsc_info(lrm_state_t * lrm_state, const char *rsc_id);
 170 int remote_ra_cancel(lrm_state_t *lrm_state, const char *rsc_id,
 171                      const char *action, guint interval_ms);
 172 int remote_ra_exec(lrm_state_t *lrm_state, const char *rsc_id,
 173                    const char *action, const char *userdata, guint interval_ms,
 174                    int timeout, /* ms */
 175                    int start_delay,     /* ms */
 176                    lrmd_key_value_t * params);
 177 void remote_ra_cleanup(lrm_state_t * lrm_state);
 178 void remote_ra_fail(const char *node_name);
 179 void remote_ra_process_pseudo(xmlNode *xml);
 180 gboolean remote_ra_is_in_maintenance(lrm_state_t * lrm_state);
 181 void remote_ra_process_maintenance_nodes(xmlNode *xml);
 182 gboolean remote_ra_controlling_guest(lrm_state_t * lrm_state);
 183 
 184 void process_lrm_event(lrm_state_t *lrm_state, lrmd_event_data_t *op,
 185                        active_op_t *pending, xmlNode *action_xml);
 186 void controld_ack_event_directly(const char *to_host, const char *to_sys,
 187                                  lrmd_rsc_info_t *rsc, lrmd_event_data_t *op,
 188                                  const char *rsc_id);
 189 void controld_rc2event(lrmd_event_data_t *event, int rc);
 190 void controld_trigger_delete_refresh(const char *from_sys, const char *rsc_id);
 191 
 192 #endif
/* */
root/daemons/controld/controld_lrm.h

INCLUDED FROM
