diff --git a/crmd/lrm_state.c b/crmd/lrm_state.c index e9aa6283ff..14f410a570 100644 --- a/crmd/lrm_state.c +++ b/crmd/lrm_state.c @@ -1,752 +1,752 @@ /* * Copyright (C) 2012 David Vossel * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include GHashTable *lrm_state_table = NULL; extern GHashTable *proxy_table; int lrmd_internal_proxy_send(lrmd_t * lrmd, xmlNode *msg); void lrmd_internal_set_proxy_callback(lrmd_t * lrmd, void *userdata, void (*callback)(lrmd_t *lrmd, void *userdata, xmlNode *msg)); static void free_rsc_info(gpointer value) { lrmd_rsc_info_t *rsc_info = value; lrmd_free_rsc_info(rsc_info); } static void free_deletion_op(gpointer value) { struct pending_deletion_op_s *op = value; free(op->rsc); delete_ha_msg_input(op->input); free(op); } static void free_recurring_op(gpointer value) { struct recurring_op_s *op = (struct recurring_op_s *)value; free(op->user_data); free(op->rsc_id); free(op->op_type); free(op->op_key); if (op->params) { g_hash_table_destroy(op->params); } free(op); } static gboolean fail_pending_op(gpointer key, gpointer value, gpointer user_data) { lrmd_event_data_t event = { 0, }; lrm_state_t *lrm_state = user_data; struct recurring_op_s *op = (struct recurring_op_s *)value; crm_trace("Pre-emptively failing %s_%s_%d on %s (call=%s, %s)", op->rsc_id, op->op_type, op->interval, lrm_state->node_name, key, op->user_data); event.type = lrmd_event_exec_complete; event.rsc_id = op->rsc_id; event.op_type = op->op_type; event.user_data = op->user_data; event.timeout = 0; event.interval = op->interval; event.rc = PCMK_OCF_CONNECTION_DIED; event.op_status = PCMK_LRM_OP_ERROR; event.t_run = op->start_time; event.t_rcchange = op->start_time; event.t_rcchange = op->start_time; event.call_id = op->call_id; event.remote_nodename = lrm_state->node_name; event.params = op->params; process_lrm_event(lrm_state, &event, op); return TRUE; } gboolean lrm_state_is_local(lrm_state_t *lrm_state) { if (lrm_state == NULL || fsa_our_uname == NULL) { return FALSE; } if (strcmp(lrm_state->node_name, fsa_our_uname) != 0) { return FALSE; } return TRUE; } lrm_state_t * lrm_state_create(const char *node_name) { lrm_state_t *state = NULL; if (!node_name) { crm_err("No node name given for lrm state object"); return NULL; } state = calloc(1, sizeof(lrm_state_t)); if (!state) { return NULL; } state->node_name = strdup(node_name); state->rsc_info_cache = g_hash_table_new_full(crm_str_hash, g_str_equal, NULL, free_rsc_info); state->deletion_ops = g_hash_table_new_full(crm_str_hash, g_str_equal, g_hash_destroy_str, free_deletion_op); state->pending_ops = g_hash_table_new_full(crm_str_hash, g_str_equal, g_hash_destroy_str, free_recurring_op); state->resource_history = g_hash_table_new_full(crm_str_hash, g_str_equal, NULL, history_free); g_hash_table_insert(lrm_state_table, (char *)state->node_name, state); return state; } void lrm_state_destroy(const char *node_name) { g_hash_table_remove(lrm_state_table, node_name); } static gboolean remote_proxy_remove_by_node(gpointer key, gpointer value, gpointer user_data) { remote_proxy_t *proxy = value; const char *node_name = user_data; if (safe_str_eq(node_name, proxy->node_name)) { return TRUE; } return FALSE; } static void internal_lrm_state_destroy(gpointer data) { lrm_state_t *lrm_state = data; if (!lrm_state) { return; } crm_trace("Destroying proxy table %s with %d members", lrm_state->node_name, g_hash_table_size(proxy_table)); g_hash_table_foreach_remove(proxy_table, remote_proxy_remove_by_node, (char *) lrm_state->node_name); remote_ra_cleanup(lrm_state); lrmd_api_delete(lrm_state->conn); if (lrm_state->rsc_info_cache) { crm_trace("Destroying rsc info cache with %d members", g_hash_table_size(lrm_state->rsc_info_cache)); g_hash_table_destroy(lrm_state->rsc_info_cache); } if (lrm_state->resource_history) { crm_trace("Destroying history op cache with %d members", g_hash_table_size(lrm_state->resource_history)); g_hash_table_destroy(lrm_state->resource_history); } if (lrm_state->deletion_ops) { crm_trace("Destroying deletion op cache with %d members", g_hash_table_size(lrm_state->deletion_ops)); g_hash_table_destroy(lrm_state->deletion_ops); } if (lrm_state->pending_ops) { crm_trace("Destroying pending op cache with %d members", g_hash_table_size(lrm_state->pending_ops)); g_hash_table_destroy(lrm_state->pending_ops); } free((char *)lrm_state->node_name); free(lrm_state); } void lrm_state_reset_tables(lrm_state_t * lrm_state) { if (lrm_state->resource_history) { crm_trace("Re-setting history op cache with %d members", g_hash_table_size(lrm_state->resource_history)); g_hash_table_remove_all(lrm_state->resource_history); } if (lrm_state->deletion_ops) { crm_trace("Re-setting deletion op cache with %d members", g_hash_table_size(lrm_state->deletion_ops)); g_hash_table_remove_all(lrm_state->deletion_ops); } if (lrm_state->pending_ops) { crm_trace("Re-setting pending op cache with %d members", g_hash_table_size(lrm_state->pending_ops)); g_hash_table_remove_all(lrm_state->pending_ops); } if (lrm_state->rsc_info_cache) { crm_trace("Re-setting rsc info cache with %d members", g_hash_table_size(lrm_state->rsc_info_cache)); g_hash_table_remove_all(lrm_state->rsc_info_cache); } } gboolean lrm_state_init_local(void) { if (lrm_state_table) { return TRUE; } lrm_state_table = g_hash_table_new_full(crm_strcase_hash, crm_strcase_equal, NULL, internal_lrm_state_destroy); if (!lrm_state_table) { return FALSE; } proxy_table = g_hash_table_new_full(crm_strcase_hash, crm_strcase_equal, NULL, remote_proxy_free); if (!proxy_table) { g_hash_table_destroy(lrm_state_table); return FALSE; } return TRUE; } void lrm_state_destroy_all(void) { if (lrm_state_table) { crm_trace("Destroying state table with %d members", g_hash_table_size(lrm_state_table)); g_hash_table_destroy(lrm_state_table); lrm_state_table = NULL; } if(proxy_table) { crm_trace("Destroying proxy table with %d members", g_hash_table_size(proxy_table)); g_hash_table_destroy(proxy_table); proxy_table = NULL; } } lrm_state_t * lrm_state_find(const char *node_name) { if (!node_name) { return NULL; } return g_hash_table_lookup(lrm_state_table, node_name); } lrm_state_t * lrm_state_find_or_create(const char *node_name) { lrm_state_t *lrm_state; lrm_state = g_hash_table_lookup(lrm_state_table, node_name); if (!lrm_state) { lrm_state = lrm_state_create(node_name); } return lrm_state; } GList * lrm_state_get_list(void) { return g_hash_table_get_values(lrm_state_table); } void lrm_state_disconnect(lrm_state_t * lrm_state) { int removed = 0; if (!lrm_state->conn) { return; } crm_trace("Disconnecting %s", lrm_state->node_name); ((lrmd_t *) lrm_state->conn)->cmds->disconnect(lrm_state->conn); if (is_not_set(fsa_input_register, R_SHUTDOWN)) { removed = g_hash_table_foreach_remove(lrm_state->pending_ops, fail_pending_op, lrm_state); crm_trace("Synthesized %d operation failures for %s", removed, lrm_state->node_name); } lrmd_api_delete(lrm_state->conn); lrm_state->conn = NULL; } int lrm_state_is_connected(lrm_state_t * lrm_state) { if (!lrm_state->conn) { return FALSE; } return ((lrmd_t *) lrm_state->conn)->cmds->is_connected(lrm_state->conn); } int lrm_state_poke_connection(lrm_state_t * lrm_state) { if (!lrm_state->conn) { return -1; } return ((lrmd_t *) lrm_state->conn)->cmds->poke_connection(lrm_state->conn); } int lrm_state_ipc_connect(lrm_state_t * lrm_state) { int ret; if (!lrm_state->conn) { lrm_state->conn = lrmd_api_new(); ((lrmd_t *) lrm_state->conn)->cmds->set_callback(lrm_state->conn, lrm_op_callback); } ret = ((lrmd_t *) lrm_state->conn)->cmds->connect(lrm_state->conn, CRM_SYSTEM_CRMD, NULL); if (ret != pcmk_ok) { lrm_state->num_lrm_register_fails++; } else { lrm_state->num_lrm_register_fails = 0; } return ret; } static int remote_proxy_dispatch_internal(const char *buffer, ssize_t length, gpointer userdata) { /* Async responses from cib and friends back to clients via pacemaker_remoted */ xmlNode *xml = NULL; remote_proxy_t *proxy = userdata; lrm_state_t *lrm_state = lrm_state_find(proxy->node_name); uint32_t flags; if (lrm_state == NULL) { return 0; } xml = string2xml(buffer); if (xml == NULL) { crm_warn("Received a NULL msg from IPC service."); return 1; } flags = crm_ipc_buffer_flags(proxy->ipc); if (flags & crm_ipc_proxied_relay_response) { crm_trace("Passing response back to %.8s on %s: %.200s - request id: %d", proxy->session_id, proxy->node_name, buffer, proxy->last_request_id); remote_proxy_relay_response(lrm_state->conn, proxy->session_id, xml, proxy->last_request_id); proxy->last_request_id = 0; } else { crm_trace("Passing event back to %.8s on %s: %.200s", proxy->session_id, proxy->node_name, buffer); remote_proxy_relay_event(lrm_state->conn, proxy->session_id, xml); } free_xml(xml); return 1; } static void remote_proxy_disconnected(void *userdata) { remote_proxy_t *proxy = userdata; lrm_state_t *lrm_state = lrm_state_find(proxy->node_name); crm_trace("Destroying %s (%p)", lrm_state->node_name, userdata); proxy->source = NULL; proxy->ipc = NULL; if (lrm_state && lrm_state->conn) { remote_proxy_notify_destroy(lrm_state->conn, proxy->session_id); } g_hash_table_remove(proxy_table, proxy->session_id); } static remote_proxy_t * remote_proxy_new(const char *node_name, const char *session_id, const char *channel) { static struct ipc_client_callbacks proxy_callbacks = { .dispatch = remote_proxy_dispatch_internal, .destroy = remote_proxy_disconnected }; remote_proxy_t *proxy = calloc(1, sizeof(remote_proxy_t)); proxy->node_name = strdup(node_name); proxy->session_id = strdup(session_id); if (safe_str_eq(channel, CRM_SYSTEM_CRMD)) { proxy->is_local = TRUE; } else { proxy->source = mainloop_add_ipc_client(channel, G_PRIORITY_LOW, 0, proxy, &proxy_callbacks); proxy->ipc = mainloop_get_ipc_client(proxy->source); if (proxy->source == NULL) { remote_proxy_free(proxy); return NULL; } } crm_trace("created proxy session ID %s", proxy->session_id); g_hash_table_insert(proxy_table, proxy->session_id, proxy); return proxy; } gboolean crmd_is_proxy_session(const char *session) { return g_hash_table_lookup(proxy_table, session) ? TRUE : FALSE; } void crmd_proxy_send(const char *session, xmlNode *msg) { remote_proxy_t *proxy = g_hash_table_lookup(proxy_table, session); lrm_state_t *lrm_state = NULL; if (!proxy) { return; } crm_log_xml_trace(msg, "to-proxy"); lrm_state = lrm_state_find(proxy->node_name); if (lrm_state) { crm_trace("Sending event to %.8s on %s", proxy->session_id, proxy->node_name); remote_proxy_relay_event(lrm_state->conn, session, msg); } } static void crmd_proxy_dispatch(const char *session, xmlNode *msg) { crm_log_xml_trace(msg, "CRMd-PROXY[inbound]"); crm_xml_add(msg, F_CRM_SYS_FROM, session); if (crmd_authorize_message(msg, NULL, session)) { route_message(C_IPC_MESSAGE, msg); } trigger_fsa(fsa_source); } static void remote_proxy_cb(lrmd_t *lrmd, void *userdata, xmlNode *msg) { lrm_state_t *lrm_state = userdata; const char *op = crm_element_value(msg, F_LRMD_IPC_OP); const char *session = crm_element_value(msg, F_LRMD_IPC_SESSION); int msg_id = 0; /* sessions are raw ipc connections to IPC, * all we do is proxy requests/responses exactly * like they are given to us at the ipc level. */ CRM_CHECK(op != NULL, return); CRM_CHECK(session != NULL, return); crm_element_value_int(msg, F_LRMD_IPC_MSG_ID, &msg_id); /* This is msg from remote ipc client going to real ipc server */ if (safe_str_eq(op, "new")) { const char *channel = crm_element_value(msg, F_LRMD_IPC_IPC_SERVER); CRM_CHECK(channel != NULL, return); if (remote_proxy_new(lrm_state->node_name, session, channel) == NULL) { remote_proxy_notify_destroy(lrmd, session); } - crm_info("new remote proxy client established to %s, session id %s", channel, session); + crm_trace("new remote proxy client established to %s, session id %s", channel, session); } else if (safe_str_eq(op, "destroy")) { remote_proxy_end_session(session); } else if (safe_str_eq(op, "request")) { int flags = 0; xmlNode *request = get_message_xml(msg, F_LRMD_IPC_MSG); const char *name = crm_element_value(msg, F_LRMD_IPC_CLIENT); remote_proxy_t *proxy = g_hash_table_lookup(proxy_table, session); CRM_CHECK(request != NULL, return); if (proxy == NULL) { /* proxy connection no longer exists */ remote_proxy_notify_destroy(lrmd, session); return; } else if ((proxy->is_local == FALSE) && (crm_ipc_connected(proxy->ipc) == FALSE)) { remote_proxy_end_session(session); return; } proxy->last_request_id = 0; crm_element_value_int(msg, F_LRMD_IPC_MSG_FLAGS, &flags); crm_xml_add(request, XML_ACL_TAG_ROLE, "pacemaker-remote"); #if ENABLE_ACL CRM_ASSERT(lrm_state->node_name); crm_acl_get_set_user(request, F_LRMD_IPC_USER, lrm_state->node_name); #endif if (proxy->is_local) { /* this is for the crmd, which we are, so don't try * and connect/send to ourselves over ipc. instead * do it directly. */ crmd_proxy_dispatch(session, request); if (flags & crm_ipc_client_response) { xmlNode *op_reply = create_xml_node(NULL, "ack"); crm_xml_add(op_reply, "function", __FUNCTION__); crm_xml_add_int(op_reply, "line", __LINE__); remote_proxy_relay_response(lrmd, session, op_reply, msg_id); free_xml(op_reply); } } else if(is_set(flags, crm_ipc_proxied)) { const char *type = crm_element_value(request, F_TYPE); const char *host = NULL; int rc; if (safe_str_eq(type, T_ATTRD)) { host = crm_element_value_copy(request, F_ATTRD_HOST); if (host == NULL) { crm_xml_add(request, F_ATTRD_HOST, proxy->node_name); crm_xml_add_int(request, F_ATTRD_HOST_ID, get_local_nodeid(0)); } } rc = crm_ipc_send(proxy->ipc, request, flags, 5000, NULL); if(rc < 0) { xmlNode *op_reply = create_xml_node(NULL, "nack"); crm_err("Could not relay %s request %d from %s to %s for %s: %s (%d)", op, msg_id, proxy->node_name, crm_ipc_name(proxy->ipc), name, pcmk_strerror(rc), rc); /* Send a n'ack so the caller doesn't block */ crm_xml_add(op_reply, "function", __FUNCTION__); crm_xml_add_int(op_reply, "line", __LINE__); crm_xml_add_int(op_reply, "rc", rc); remote_proxy_relay_response(lrmd, session, op_reply, msg_id); free_xml(op_reply); } else { crm_trace("Relayed %s request %d from %s to %s for %s", op, msg_id, proxy->node_name, crm_ipc_name(proxy->ipc), name); proxy->last_request_id = msg_id; } } else { int rc = pcmk_ok; xmlNode *op_reply = NULL; /* For backwards compatibility with pacemaker_remoted <= 1.1.10 */ crm_trace("Relaying %s request %d from %s to %s for %s", op, msg_id, proxy->node_name, crm_ipc_name(proxy->ipc), name); rc = crm_ipc_send(proxy->ipc, request, flags, 10000, &op_reply); if(rc < 0) { crm_err("Could not relay %s request %d from %s to %s for %s: %s (%d)", op, msg_id, proxy->node_name, crm_ipc_name(proxy->ipc), name, pcmk_strerror(rc), rc); } else { crm_trace("Relayed %s request %d from %s to %s for %s", op, msg_id, proxy->node_name, crm_ipc_name(proxy->ipc), name); } if(op_reply) { remote_proxy_relay_response(lrmd, session, op_reply, msg_id); free_xml(op_reply); } } } else { crm_err("Unknown proxy operation: %s", op); } } int lrm_state_remote_connect_async(lrm_state_t * lrm_state, const char *server, int port, int timeout_ms) { int ret; if (!lrm_state->conn) { lrm_state->conn = lrmd_remote_api_new(lrm_state->node_name, server, port); if (!lrm_state->conn) { return -1; } ((lrmd_t *) lrm_state->conn)->cmds->set_callback(lrm_state->conn, remote_lrm_op_callback); lrmd_internal_set_proxy_callback(lrm_state->conn, lrm_state, remote_proxy_cb); } crm_trace("initiating remote connection to %s at %d with timeout %d", server, port, timeout_ms); ret = ((lrmd_t *) lrm_state->conn)->cmds->connect_async(lrm_state->conn, lrm_state->node_name, timeout_ms); if (ret != pcmk_ok) { lrm_state->num_lrm_register_fails++; } else { lrm_state->num_lrm_register_fails = 0; } return ret; } int lrm_state_get_metadata(lrm_state_t * lrm_state, const char *class, const char *provider, const char *agent, char **output, enum lrmd_call_options options) { if (!lrm_state->conn) { return -ENOTCONN; } /* Optimize this... only retrieve metadata from local lrmd connection. Perhaps consider * caching result. */ return ((lrmd_t *) lrm_state->conn)->cmds->get_metadata(lrm_state->conn, class, provider, agent, output, options); } int lrm_state_cancel(lrm_state_t * lrm_state, const char *rsc_id, const char *action, int interval) { if (!lrm_state->conn) { return -ENOTCONN; } /* Optimize this, cancel requires a synced request/response to the server. * Figure out a way to make this async. */ if (is_remote_lrmd_ra(NULL, NULL, rsc_id)) { return remote_ra_cancel(lrm_state, rsc_id, action, interval); } return ((lrmd_t *) lrm_state->conn)->cmds->cancel(lrm_state->conn, rsc_id, action, interval); } lrmd_rsc_info_t * lrm_state_get_rsc_info(lrm_state_t * lrm_state, const char *rsc_id, enum lrmd_call_options options) { lrmd_rsc_info_t *rsc = NULL; if (!lrm_state->conn) { return NULL; } if (is_remote_lrmd_ra(NULL, NULL, rsc_id)) { return remote_ra_get_rsc_info(lrm_state, rsc_id); } rsc = g_hash_table_lookup(lrm_state->rsc_info_cache, rsc_id); if (rsc == NULL) { /* only contact the lrmd if we don't already have a cached rsc info */ rsc = ((lrmd_t *) lrm_state->conn)->cmds->get_rsc_info(lrm_state->conn, rsc_id, options); if (rsc == NULL) { return NULL; } /* cache the result */ g_hash_table_insert(lrm_state->rsc_info_cache, rsc->id, rsc); } return lrmd_copy_rsc_info(rsc); } int lrm_state_exec(lrm_state_t * lrm_state, const char *rsc_id, const char *action, const char *userdata, int interval, /* ms */ int timeout, /* ms */ int start_delay, /* ms */ lrmd_key_value_t * params) { if (!lrm_state->conn) { lrmd_key_value_freeall(params); return -ENOTCONN; } if (is_remote_lrmd_ra(NULL, NULL, rsc_id)) { return remote_ra_exec(lrm_state, rsc_id, action, userdata, interval, timeout, start_delay, params); } return ((lrmd_t *) lrm_state->conn)->cmds->exec(lrm_state->conn, rsc_id, action, userdata, interval, timeout, start_delay, lrmd_opt_notify_changes_only, params); } int lrm_state_register_rsc(lrm_state_t * lrm_state, const char *rsc_id, const char *class, const char *provider, const char *agent, enum lrmd_call_options options) { if (!lrm_state->conn) { return -ENOTCONN; } /* optimize this... this function is a synced round trip from client to daemon. * The crmd/lrm.c code path should be re-factored to allow the register of resources * to be performed async. The lrmd client api needs to make an async version * of register available. */ if (is_remote_lrmd_ra(agent, provider, NULL)) { return lrm_state_find_or_create(rsc_id) ? pcmk_ok : -1; } return ((lrmd_t *) lrm_state->conn)->cmds->register_rsc(lrm_state->conn, rsc_id, class, provider, agent, options); } int lrm_state_unregister_rsc(lrm_state_t * lrm_state, const char *rsc_id, enum lrmd_call_options options) { if (!lrm_state->conn) { return -ENOTCONN; } /* optimize this... this function is a synced round trip from client to daemon. * The crmd/lrm.c code path that uses this function should always treat it as an * async operation. The lrmd client api needs to make an async version unreg available. */ if (is_remote_lrmd_ra(NULL, NULL, rsc_id)) { lrm_state_destroy(rsc_id); return pcmk_ok; } g_hash_table_remove(lrm_state->rsc_info_cache, rsc_id); return ((lrmd_t *) lrm_state->conn)->cmds->unregister_rsc(lrm_state->conn, rsc_id, options); } diff --git a/lrmd/ipc_proxy.c b/lrmd/ipc_proxy.c index 72d83c4c75..9427393c8f 100644 --- a/lrmd/ipc_proxy.c +++ b/lrmd/ipc_proxy.c @@ -1,411 +1,411 @@ /* * Copyright (c) 2012 David Vossel * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * */ #include #include #include #include #include #include #include #include #include #include #include #include static qb_ipcs_service_t *cib_ro = NULL; static qb_ipcs_service_t *cib_rw = NULL; static qb_ipcs_service_t *cib_shm = NULL; static qb_ipcs_service_t *attrd_ipcs = NULL; static qb_ipcs_service_t *crmd_ipcs = NULL; static qb_ipcs_service_t *stonith_ipcs = NULL; /* ipc providers == crmd clients connecting from cluster nodes */ GHashTable *ipc_providers; /* ipc clients == things like cibadmin, crm_resource, connecting locally */ GHashTable *ipc_clients; static int32_t ipc_proxy_accept(qb_ipcs_connection_t * c, uid_t uid, gid_t gid, const char *ipc_channel) { void *key = NULL; void *value = NULL; crm_client_t *client; crm_client_t *ipc_proxy = NULL; GHashTableIter iter; xmlNode *msg; crm_trace("Connection %p on channel %s", c, ipc_channel); if (g_hash_table_size(ipc_providers) == 0) { crm_err("No ipc providers available for uid %d gid %d", uid, gid); return -EREMOTEIO; } g_hash_table_iter_init(&iter, ipc_providers); if (g_hash_table_iter_next(&iter, (gpointer *) & key, (gpointer *) & value)) { /* grab the first provider available, any provider in this * table will work. Usually there will only be one. These are * lrmd client connections originating for a cluster node's crmd. */ ipc_proxy = value; } else { crm_err("No ipc providers available for uid %d gid %d", uid, gid); return -EREMOTEIO; } /* this new client is a local ipc client on a remote * guest wanting to access the ipc on any available cluster nodes */ client = crm_client_new(c, uid, gid); if (client == NULL) { return -EREMOTEIO; } /* This ipc client is bound to a single ipc provider. If the * provider goes away, this client is disconnected */ client->userdata = strdup(ipc_proxy->id); client->name = crm_strdup_printf("proxy-%s-%d-%.8s", ipc_channel, client->pid, client->id); g_hash_table_insert(ipc_clients, client->id, client); msg = create_xml_node(NULL, T_LRMD_IPC_PROXY); crm_xml_add(msg, F_LRMD_IPC_OP, "new"); crm_xml_add(msg, F_LRMD_IPC_IPC_SERVER, ipc_channel); crm_xml_add(msg, F_LRMD_IPC_SESSION, client->id); lrmd_server_send_notify(ipc_proxy, msg); free_xml(msg); crm_debug("created new ipc proxy with session id %s", client->id); return 0; } static int32_t crmd_proxy_accept(qb_ipcs_connection_t * c, uid_t uid, gid_t gid) { return ipc_proxy_accept(c, uid, gid, CRM_SYSTEM_CRMD); } static int32_t attrd_proxy_accept(qb_ipcs_connection_t * c, uid_t uid, gid_t gid) { return ipc_proxy_accept(c, uid, gid, T_ATTRD); } static int32_t stonith_proxy_accept(qb_ipcs_connection_t * c, uid_t uid, gid_t gid) { return ipc_proxy_accept(c, uid, gid, "stonith-ng"); } static int32_t cib_proxy_accept_rw(qb_ipcs_connection_t * c, uid_t uid, gid_t gid) { return ipc_proxy_accept(c, uid, gid, cib_channel_rw); } static int32_t cib_proxy_accept_ro(qb_ipcs_connection_t * c, uid_t uid, gid_t gid) { return ipc_proxy_accept(c, uid, gid, cib_channel_ro); } static void ipc_proxy_created(qb_ipcs_connection_t * c) { crm_trace("Connection %p", c); } void ipc_proxy_forward_client(crm_client_t *ipc_proxy, xmlNode *xml) { const char *session = crm_element_value(xml, F_LRMD_IPC_SESSION); const char *msg_type = crm_element_value(xml, F_LRMD_IPC_OP); xmlNode *msg = get_message_xml(xml, F_LRMD_IPC_MSG); crm_client_t *ipc_client = crm_client_get_by_id(session); int rc = 0; if (ipc_client == NULL) { xmlNode *msg = create_xml_node(NULL, T_LRMD_IPC_PROXY); crm_xml_add(msg, F_LRMD_IPC_OP, "destroy"); crm_xml_add(msg, F_LRMD_IPC_SESSION, session); lrmd_server_send_notify(ipc_proxy, msg); free_xml(msg); return; } /* This is an event or response from the ipc provider * going to the local ipc client. * * Looking at the chain of events. * * -----remote node----------------|---- cluster node ------ * ipc_client <--1--> this code <--2--> crmd:remote_proxy_cb/remote_proxy_relay_event() <----3----> ipc server * * This function is receiving a msg from connection 2 * and forwarding it to connection 1. */ if (safe_str_eq(msg_type, "event")) { - crm_info("Sending event to %s", ipc_client->id); + crm_trace("Sending event to %s", ipc_client->id); rc = crm_ipcs_send(ipc_client, 0, msg, crm_ipc_server_event); } else if (safe_str_eq(msg_type, "response")) { int msg_id = 0; crm_element_value_int(xml, F_LRMD_IPC_MSG_ID, &msg_id); - crm_info("Sending response to %d - %s", ipc_client->request_id, ipc_client->id); + crm_trace("Sending response to %d - %s", ipc_client->request_id, ipc_client->id); rc = crm_ipcs_send(ipc_client, msg_id, msg, FALSE); CRM_LOG_ASSERT(msg_id == ipc_client->request_id); ipc_client->request_id = 0; } else if (safe_str_eq(msg_type, "destroy")) { qb_ipcs_disconnect(ipc_client->ipcs); } else { crm_err("Unknown ipc proxy msg type %s" , msg_type); } if (rc < 0) { crm_warn("IPC Proxy send to ipc client %s failed, rc = %d", ipc_client->id, rc); } } static int32_t ipc_proxy_dispatch(qb_ipcs_connection_t * c, void *data, size_t size) { uint32_t id = 0; uint32_t flags = 0; crm_client_t *client = crm_client_get(c); crm_client_t *ipc_proxy = crm_client_get_by_id(client->userdata); xmlNode *request = NULL; xmlNode *msg = NULL; if (!ipc_proxy) { qb_ipcs_disconnect(client->ipcs); return 0; } /* This is a request from the local ipc client going * to the ipc provider. * * Looking at the chain of events. * * -----remote node----------------|---- cluster node ------ * ipc_client <--1--> this code <--2--> crmd:remote_proxy_dispatch_internal() <----3----> ipc server * * This function is receiving a request from connection * 1 and forwarding it to connection 2. */ request = crm_ipcs_recv(client, data, size, &id, &flags); if (!request) { return 0; } CRM_CHECK(client != NULL, crm_err("Invalid client"); return FALSE); CRM_CHECK(client->id != NULL, crm_err("Invalid client: %p", client); return FALSE); /* this ensures that synced request/responses happen over the event channel * in the crmd, allowing the crmd to process the messages async */ set_bit(flags, crm_ipc_proxied); client->request_id = id; msg = create_xml_node(NULL, T_LRMD_IPC_PROXY); crm_xml_add(msg, F_LRMD_IPC_OP, "request"); crm_xml_add(msg, F_LRMD_IPC_SESSION, client->id); crm_xml_add(msg, F_LRMD_IPC_CLIENT, crm_client_name(client)); crm_xml_add(msg, F_LRMD_IPC_USER, client->user); crm_xml_add_int(msg, F_LRMD_IPC_MSG_ID, id); crm_xml_add_int(msg, F_LRMD_IPC_MSG_FLAGS, flags); add_message_xml(msg, F_LRMD_IPC_MSG, request); lrmd_server_send_notify(ipc_proxy, msg); free_xml(msg); return 0; } static int32_t ipc_proxy_closed(qb_ipcs_connection_t * c) { crm_client_t *client = crm_client_get(c); crm_client_t *ipc_proxy; if (client == NULL) { return 0; } ipc_proxy = crm_client_get_by_id(client->userdata); crm_trace("Connection %p", c); if (ipc_proxy) { xmlNode *msg = create_xml_node(NULL, T_LRMD_IPC_PROXY); crm_xml_add(msg, F_LRMD_IPC_OP, "destroy"); crm_xml_add(msg, F_LRMD_IPC_SESSION, client->id); lrmd_server_send_notify(ipc_proxy, msg); free_xml(msg); } g_hash_table_remove(ipc_clients, client->id); free(client->userdata); client->userdata = NULL; crm_client_destroy(client); return 0; } static void ipc_proxy_destroy(qb_ipcs_connection_t * c) { crm_trace("Connection %p", c); ipc_proxy_closed(c); } static struct qb_ipcs_service_handlers crmd_proxy_callbacks = { .connection_accept = crmd_proxy_accept, .connection_created = ipc_proxy_created, .msg_process = ipc_proxy_dispatch, .connection_closed = ipc_proxy_closed, .connection_destroyed = ipc_proxy_destroy }; static struct qb_ipcs_service_handlers attrd_proxy_callbacks = { .connection_accept = attrd_proxy_accept, .connection_created = ipc_proxy_created, .msg_process = ipc_proxy_dispatch, .connection_closed = ipc_proxy_closed, .connection_destroyed = ipc_proxy_destroy }; static struct qb_ipcs_service_handlers stonith_proxy_callbacks = { .connection_accept = stonith_proxy_accept, .connection_created = ipc_proxy_created, .msg_process = ipc_proxy_dispatch, .connection_closed = ipc_proxy_closed, .connection_destroyed = ipc_proxy_destroy }; static struct qb_ipcs_service_handlers cib_proxy_callbacks_ro = { .connection_accept = cib_proxy_accept_ro, .connection_created = ipc_proxy_created, .msg_process = ipc_proxy_dispatch, .connection_closed = ipc_proxy_closed, .connection_destroyed = ipc_proxy_destroy }; static struct qb_ipcs_service_handlers cib_proxy_callbacks_rw = { .connection_accept = cib_proxy_accept_rw, .connection_created = ipc_proxy_created, .msg_process = ipc_proxy_dispatch, .connection_closed = ipc_proxy_closed, .connection_destroyed = ipc_proxy_destroy }; void ipc_proxy_add_provider(crm_client_t *ipc_proxy) { if (ipc_providers == NULL) { return; } g_hash_table_insert(ipc_providers, ipc_proxy->id, ipc_proxy); } void ipc_proxy_remove_provider(crm_client_t *ipc_proxy) { GHashTableIter iter; crm_client_t *ipc_client = NULL; char *key = NULL; GList *remove_these = NULL; GListPtr gIter = NULL; if (ipc_providers == NULL) { return; } g_hash_table_remove(ipc_providers, ipc_proxy->id); g_hash_table_iter_init(&iter, ipc_clients); while (g_hash_table_iter_next(&iter, (gpointer *) & key, (gpointer *) & ipc_client)) { const char *proxy_id = ipc_client->userdata; if (safe_str_eq(proxy_id, ipc_proxy->id)) { crm_info("ipc proxy connection for client %s pid %d destroyed because cluster node disconnected.", ipc_client->id, ipc_client->pid); /* we can't remove during the iteration, so copy items * to a list we can destroy later */ remove_these = g_list_append(remove_these, ipc_client); } } for (gIter = remove_these; gIter != NULL; gIter = gIter->next) { ipc_client = gIter->data; qb_ipcs_disconnect(ipc_client->ipcs); } /* just frees the list, not the elements in the list */ g_list_free(remove_these); } void ipc_proxy_init(void) { ipc_clients = g_hash_table_new_full(crm_str_hash, g_str_equal, NULL, NULL); ipc_providers = g_hash_table_new_full(crm_str_hash, g_str_equal, NULL, NULL); cib_ipc_servers_init(&cib_ro, &cib_rw, &cib_shm, &cib_proxy_callbacks_ro, &cib_proxy_callbacks_rw); attrd_ipc_server_init(&attrd_ipcs, &attrd_proxy_callbacks); stonith_ipc_server_init(&stonith_ipcs, &stonith_proxy_callbacks); crmd_ipcs = crmd_ipc_server_init(&crmd_proxy_callbacks); if (crmd_ipcs == NULL) { crm_err("Failed to create crmd server: exiting and inhibiting respawn."); crm_warn("Verify pacemaker and pacemaker_remote are not both enabled."); crm_exit(DAEMON_RESPAWN_STOP); } } void ipc_proxy_cleanup(void) { if (ipc_providers) { g_hash_table_destroy(ipc_providers); } if (ipc_clients) { g_hash_table_destroy(ipc_clients); } cib_ipc_servers_destroy(cib_ro, cib_rw, cib_shm); qb_ipcs_destroy(attrd_ipcs); qb_ipcs_destroy(stonith_ipcs); qb_ipcs_destroy(crmd_ipcs); cib_ro = NULL; cib_rw = NULL; cib_shm = NULL; ipc_providers = NULL; ipc_clients = NULL; }