Imported Upstream version 4.6.2
This commit is contained in:
Mario Fetka
330
daemons/ipa-slapi-plugins/topology/topology_init.c
Normal file
330
daemons/ipa-slapi-plugins/topology/topology_init.c
Normal file
@@ -0,0 +1,330 @@
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#include "topology.h"
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char *ipa_topo_plugin_hostname;
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char *ipa_topo_plugin_shared_config_base;
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int ipa_topo_plugin_activated;
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static Slapi_PluginDesc pdesc = { PLUGIN_NAME, PLUGIN_VENDOR, PLUGIN_VERSION,
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IPA_TOPO_PLUGIN_SUBSYSTEM };
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static int ipa_topo_start(Slapi_PBlock * pb);
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static int ipa_topo_close(Slapi_PBlock * pb);
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static int ipa_topo_preop_init(Slapi_PBlock *pb);
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static int ipa_topo_postop_init(Slapi_PBlock *pb);
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static int ipa_topo_internal_postop_init(Slapi_PBlock *pb);
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static int ipa_topo_rootdse_init(Slapi_PBlock *pb);
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static int ipa_topo_rootdse_search(Slapi_PBlock *pb, Slapi_Entry* e,
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Slapi_Entry* entryAfter, int *returncode,
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char *returntext, void *arg);
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void ipa_topo_be_state_change(void *handle, char *be_name,
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int old_be_state, int new_be_state);
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int ipa_topo_init(Slapi_PBlock *pb)
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{
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int rc = 0;
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void *ipa_topo_plugin_identity = NULL;
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slapi_log_error(SLAPI_LOG_PLUGIN, IPA_TOPO_PLUGIN_SUBSYSTEM,
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"--> ipa_topo_init\n");
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/**
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* Store the plugin identity for later use.
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* Used for internal operations
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*/
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slapi_pblock_get(pb, SLAPI_PLUGIN_IDENTITY, &ipa_topo_plugin_identity);
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ipa_topo_set_plugin_id(ipa_topo_plugin_identity);
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if (slapi_pblock_set(pb, SLAPI_PLUGIN_VERSION, SLAPI_PLUGIN_VERSION_01) != 0
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|| slapi_pblock_set(pb, SLAPI_PLUGIN_START_FN, (void *)ipa_topo_start) != 0
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|| slapi_pblock_set(pb, SLAPI_PLUGIN_CLOSE_FN, (void *)ipa_topo_close) != 0
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|| slapi_pblock_set(pb, SLAPI_PLUGIN_DESCRIPTION, (void *) &pdesc) != 0) {
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slapi_log_error(SLAPI_LOG_FATAL, IPA_TOPO_PLUGIN_SUBSYSTEM,
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"ipa_topo_init: failed to register plugin\n");
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rc = 1;
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}
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if (rc == 0) {
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char *plugin_type = "bepreoperation";
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if (slapi_register_plugin(plugin_type, 1, "ipa_topo_init",
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ipa_topo_preop_init, IPA_TOPO_PREOP_DESC,
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NULL, ipa_topo_get_plugin_id())) {
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slapi_log_error(SLAPI_LOG_FATAL, IPA_TOPO_PLUGIN_SUBSYSTEM,
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"ipa_topo_init: failed to register preop plugin\n");
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rc = 1;
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}
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}
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if (rc == 0) {
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char *plugin_type = "postoperation";
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if (slapi_register_plugin(plugin_type, 1, "ipa_topo_init",
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ipa_topo_postop_init, IPA_TOPO_POSTOP_DESC,
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NULL, ipa_topo_get_plugin_id())) {
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slapi_log_error(SLAPI_LOG_FATAL, IPA_TOPO_PLUGIN_SUBSYSTEM,
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"ipa_topo_init: failed to register postop plugin\n");
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rc = 1;
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}
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}
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if (rc == 0) {
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char *plugin_type = "internalpostoperation";
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if (slapi_register_plugin(plugin_type, 1, "ipa_topo_internal_init",
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ipa_topo_internal_postop_init,
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IPA_TOPO_INTERNAL_POSTOP_DESC,
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NULL, ipa_topo_get_plugin_id())) {
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slapi_log_error(SLAPI_LOG_FATAL, IPA_TOPO_PLUGIN_SUBSYSTEM,
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"ipa_topo_init: failed to register internal postop plugin\n");
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rc = 1;
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}
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}
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slapi_log_error(SLAPI_LOG_PLUGIN, IPA_TOPO_PLUGIN_SUBSYSTEM,
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"<-- ipa_topo_init\n");
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return(rc);
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}
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static int
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ipa_topo_preop_init(Slapi_PBlock *pb)
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{
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int rc;
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rc = slapi_pblock_set(pb, SLAPI_PLUGIN_BE_PRE_MODIFY_FN,
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(void *)ipa_topo_pre_mod);
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rc |= slapi_pblock_set(pb, SLAPI_PLUGIN_BE_PRE_MODRDN_FN,
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(void *)ipa_topo_pre_modrdn);
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rc |= slapi_pblock_set(pb, SLAPI_PLUGIN_BE_PRE_ADD_FN,
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(void *)ipa_topo_pre_add);
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rc |= slapi_pblock_set(pb, SLAPI_PLUGIN_BE_PRE_DELETE_FN,
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(void *)ipa_topo_pre_del);
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return(rc);
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}
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static int
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ipa_topo_postop_init(Slapi_PBlock *pb)
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{
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int rc;
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rc = slapi_pblock_set(pb, SLAPI_PLUGIN_POST_ADD_FN,
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(void *)ipa_topo_post_add);
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rc |= slapi_pblock_set(pb, SLAPI_PLUGIN_POST_DELETE_FN,
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(void *)ipa_topo_post_del);
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rc |= slapi_pblock_set(pb, SLAPI_PLUGIN_POST_MODIFY_FN,
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(void *)ipa_topo_post_mod);
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return(rc);
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}
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static int
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ipa_topo_internal_postop_init(Slapi_PBlock *pb)
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{
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int rc;
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rc = slapi_pblock_set(pb, SLAPI_PLUGIN_INTERNAL_POST_ADD_FN,
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(void *)ipa_topo_post_add);
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rc |= slapi_pblock_set(pb, SLAPI_PLUGIN_INTERNAL_POST_DELETE_FN,
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(void *)ipa_topo_post_del);
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return(rc);
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}
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int
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ipa_topo_setup_managed_servers(void)
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{
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int rc = 0;
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/* initially only read the entries below cn=masters
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* and build the list of hostnames
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*/
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rc = ipa_topo_util_setup_servers();
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return rc;
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}
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void
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ipa_topo_queue_apply_shared_config(time_t event_time, void *arg)
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{
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ipa_topo_apply_shared_config();
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}
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int
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ipa_topo_apply_shared_config(void)
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{
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int i = 0;
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int rc = 0;
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char **shared_replica_root = NULL;
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TopoReplica *replica_config = NULL;
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while (0 == ipa_topo_acquire_startup_inprogress()) {
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DS_Sleep(1);
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}
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shared_replica_root = ipa_topo_get_plugin_replica_root();
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while (rc == 0 && shared_replica_root[i]) {
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/* get replica onfig entry from shared tree */
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replica_config = ipa_topo_util_get_replica_conf(shared_replica_root[i]);
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if (NULL == replica_config) {
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slapi_log_error(SLAPI_LOG_PLUGIN, IPA_TOPO_PLUGIN_SUBSYSTEM,
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"cannot find replica entry for: %s\n", shared_replica_root[i]);
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} else {
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rc = ipa_topo_apply_shared_replica_config(replica_config);
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}
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i++;
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}
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/* initialize the list of managed servers */
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rc = ipa_topo_setup_managed_servers();
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if (ipa_topo_get_post_init()) {
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/* this server has just been initialized, we reset the init
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* flag in the segments which triggered this init
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*/
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i = 0;
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while(shared_replica_root[i]) {
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ipa_topo_util_reset_init(shared_replica_root[i]);
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i++;
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}
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ipa_topo_set_post_init(0);
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}
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ipa_topo_release_startup_inprogress();
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return (rc);
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}
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int
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ipa_topo_apply_shared_replica_config(TopoReplica *replica_config)
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{
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TopoReplicaSegmentList *replica_segments = NULL;
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int rc = 0;
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if (replica_config) {
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/* get all segments for the replica from the shared config */
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replica_segments = ipa_topo_util_get_replica_segments(replica_config);
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/* get all replication agreements for replica root */
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rc = ipa_topo_util_update_agmt_list(replica_config, replica_segments);
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}
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return (rc);
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}
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static int
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ipa_topo_start(Slapi_PBlock * pb)
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{
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int rc = 0;
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slapi_log_error(SLAPI_LOG_PLUGIN, IPA_TOPO_PLUGIN_SUBSYSTEM,
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"--> ipa_topo_start\n");
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/* expose info about the plugin via rootdse */
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rc = ipa_topo_rootdse_init(pb);
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/* register callback to handle state changes of backends,
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* required to check changes in domain level after online initialization
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*/
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slapi_register_backend_state_change((void *)ipa_topo_be_state_change,
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ipa_topo_be_state_change);
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/* init plugin config data from the plugin entry in cn=config */
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rc = ipa_topo_init_plugin_config(pb);
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if (rc != 0) {
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slapi_log_error(SLAPI_LOG_FATAL, IPA_TOPO_PLUGIN_SUBSYSTEM,
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"unable to get configuration\n");
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return (rc);
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}
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if (0 == ipa_topo_get_plugin_active()) {
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slapi_log_error(SLAPI_LOG_PLUGIN, IPA_TOPO_PLUGIN_SUBSYSTEM,
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"plugin not activated, waiting for increase of domain level\n");
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return rc;
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}
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rc = ipa_topo_util_start(1);
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slapi_log_error(SLAPI_LOG_PLUGIN, IPA_TOPO_PLUGIN_SUBSYSTEM,
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"<-- ipa_topo_start\n");
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return (rc);
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}
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static int
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ipa_topo_close(Slapi_PBlock * pb)
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{
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ipa_topo_set_plugin_active(0);
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slapi_config_remove_callback(SLAPI_OPERATION_SEARCH, DSE_FLAG_PREOP,
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"", LDAP_SCOPE_BASE, "(objectclass=*)", ipa_topo_rootdse_search);
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slapi_unregister_backend_state_change((void *)ipa_topo_be_state_change);
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ipa_topo_free_plugin_config();
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return 0;
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}
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static int
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ipa_topo_rootdse_init(Slapi_PBlock *pb)
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{
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int rc = SLAPI_PLUGIN_FAILURE;
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if (slapi_config_register_callback_plugin(SLAPI_OPERATION_SEARCH,
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DSE_FLAG_PREOP | DSE_FLAG_PLUGIN,
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"", LDAP_SCOPE_BASE, "(objectclass=*)",
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ipa_topo_rootdse_search, NULL, pb)) {
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rc = SLAPI_PLUGIN_SUCCESS;
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}
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return rc;
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}
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static int
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ipa_topo_rootdse_search(Slapi_PBlock *pb, Slapi_Entry* e, Slapi_Entry* entryAfter,
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int *returncode, char *returntext, void *arg)
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{
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char *version = slapi_ch_smprintf("%d.%d", ipa_topo_get_plugin_version_major(),
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ipa_topo_get_plugin_version_minor());
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slapi_entry_attr_set_charptr(e, "ipaTopologyPluginVersion", version);
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if (ipa_topo_get_plugin_active()) {
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slapi_entry_attr_set_charptr(e, "ipaTopologyIsManaged", "on");
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} else {
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slapi_entry_attr_set_charptr(e, "ipaTopologyIsManaged", "off");
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}
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/* we expose temporarily the domain level in this function, should
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* finally be handled in a plugin managing the domain level
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*/
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char *level = slapi_ch_smprintf("%d", ipa_topo_get_domain_level());
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slapi_entry_attr_set_charptr(e, "ipaDomainLevel", level);
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slapi_ch_free_string(&version);
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slapi_ch_free_string(&level);
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return SLAPI_DSE_CALLBACK_OK;
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}
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void
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ipa_topo_be_state_change(void *handle, char *be_name,
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int old_be_state, int new_be_state)
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{
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Slapi_Backend *be=NULL;
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const char *be_suffix;
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/* check if different backends require different actions */
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be = slapi_be_select_by_instance_name(be_name);
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be_suffix = slapi_sdn_get_dn(slapi_be_getsuffix(be, 0));
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if (0 == ipa_topo_cfg_plugin_suffix_is_managed(be_suffix)) {
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/* nothing to do */
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return;
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}
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if (new_be_state == SLAPI_BE_STATE_ON) {
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/* backend came back online - check change in domain level */
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slapi_log_error(SLAPI_LOG_FATAL, IPA_TOPO_PLUGIN_SUBSYSTEM,
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"ipa_topo_be_state_change - "
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"backend %s is coming online; "
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"checking domain level and init shared topology\n",
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be_name);
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ipa_topo_util_set_domain_level();
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ipa_topo_util_check_plugin_active();
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if (ipa_topo_get_plugin_active()) {
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ipa_topo_set_post_init(1);
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ipa_topo_util_start(1);
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}
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} else if (new_be_state == SLAPI_BE_STATE_OFFLINE) {
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/* backend is about to be taken down - inactivate plugin */
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slapi_log_error(SLAPI_LOG_FATAL, IPA_TOPO_PLUGIN_SUBSYSTEM,
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"ipa_topo_be_state_change"
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"backend %s is going offline; inactivate plugin\n", be_name);
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} else if (new_be_state == SLAPI_BE_STATE_DELETE) {
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/* backend is about to be removed - disable replication */
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if (old_be_state == SLAPI_BE_STATE_ON) {
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slapi_log_error(SLAPI_LOG_FATAL, IPA_TOPO_PLUGIN_SUBSYSTEM,
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"ipa_topo_be_state_change"
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"backend %s is about to be deleted; inactivate plugin\n", be_name);
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}
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}
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}
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