diff --git a/cib/callbacks.c b/cib/callbacks.c index b29ed91f20..27ce8551c8 100644 --- a/cib/callbacks.c +++ b/cib/callbacks.c @@ -1,1586 +1,1586 @@ /* * Copyright (C) 2004 Andrew Beekhof * * 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 #include #include #include #include #include #include #include #include #include #include "common.h" static unsigned long cib_local_bcast_num = 0; typedef struct cib_local_notify_s { xmlNode *notify_src; char *client_id; gboolean from_peer; gboolean sync_reply; } cib_local_notify_t; int next_client_id = 0; gboolean legacy_mode = FALSE; qb_ipcs_service_t *ipcs_ro = NULL; qb_ipcs_service_t *ipcs_rw = NULL; qb_ipcs_service_t *ipcs_shm = NULL; gint cib_GCompareFunc(gconstpointer a, gconstpointer b); gboolean can_write(int flags); void send_cib_replace(const xmlNode * sync_request, const char *host); -void cib_process_request(xmlNode * request, gboolean privileged, gboolean force_synchronous, - gboolean from_peer, crm_client_t * cib_client); +static void cib_process_request(xmlNode* request, gboolean force_synchronous, + gboolean privileged, crm_client_t *cib_client); int cib_process_command(xmlNode * request, xmlNode ** reply, xmlNode ** cib_diff, gboolean privileged); gboolean cib_common_callback(qb_ipcs_connection_t * c, void *data, size_t size, gboolean privileged); gboolean cib_legacy_mode(void) { return legacy_mode; } static int32_t cib_ipc_accept(qb_ipcs_connection_t * c, uid_t uid, gid_t gid) { crm_trace("Connection %p", c); if (cib_shutdown_flag) { crm_info("Ignoring new client [%d] during shutdown", crm_ipcs_client_pid(c)); return -EPERM; } if (crm_client_new(c, uid, gid) == NULL) { return -EIO; } return 0; } static void cib_ipc_created(qb_ipcs_connection_t * c) { crm_trace("Connection %p", c); } static int32_t cib_ipc_dispatch_rw(qb_ipcs_connection_t * c, void *data, size_t size) { crm_client_t *client = crm_client_get(c); crm_trace("%p message from %s", c, client->id); return cib_common_callback(c, data, size, TRUE); } static int32_t cib_ipc_dispatch_ro(qb_ipcs_connection_t * c, void *data, size_t size) { crm_client_t *client = crm_client_get(c); crm_trace("%p message from %s", c, client->id); return cib_common_callback(c, data, size, FALSE); } /* Error code means? */ static int32_t cib_ipc_closed(qb_ipcs_connection_t * c) { crm_client_t *client = crm_client_get(c); if (client == NULL) { return 0; } crm_trace("Connection %p", c); crm_client_destroy(client); return 0; } static void cib_ipc_destroy(qb_ipcs_connection_t * c) { crm_trace("Connection %p", c); cib_ipc_closed(c); if (cib_shutdown_flag) { cib_shutdown(0); } } struct qb_ipcs_service_handlers ipc_ro_callbacks = { .connection_accept = cib_ipc_accept, .connection_created = cib_ipc_created, .msg_process = cib_ipc_dispatch_ro, .connection_closed = cib_ipc_closed, .connection_destroyed = cib_ipc_destroy }; struct qb_ipcs_service_handlers ipc_rw_callbacks = { .connection_accept = cib_ipc_accept, .connection_created = cib_ipc_created, .msg_process = cib_ipc_dispatch_rw, .connection_closed = cib_ipc_closed, .connection_destroyed = cib_ipc_destroy }; void cib_common_callback_worker(uint32_t id, uint32_t flags, xmlNode * op_request, crm_client_t * cib_client, gboolean privileged) { const char *op = crm_element_value(op_request, F_CIB_OPERATION); if (crm_str_eq(op, CRM_OP_REGISTER, TRUE)) { if (flags & crm_ipc_client_response) { xmlNode *ack = create_xml_node(NULL, __FUNCTION__); crm_xml_add(ack, F_CIB_OPERATION, CRM_OP_REGISTER); crm_xml_add(ack, F_CIB_CLIENTID, cib_client->id); crm_ipcs_send(cib_client, id, ack, flags); cib_client->request_id = 0; free_xml(ack); } return; } else if (crm_str_eq(op, T_CIB_NOTIFY, TRUE)) { /* Update the notify filters for this client */ int on_off = 0; long long bit = 0; const char *type = crm_element_value(op_request, F_CIB_NOTIFY_TYPE); crm_element_value_int(op_request, F_CIB_NOTIFY_ACTIVATE, &on_off); crm_debug("Setting %s callbacks for %s (%s): %s", type, cib_client->name, cib_client->id, on_off ? "on" : "off"); if (safe_str_eq(type, T_CIB_POST_NOTIFY)) { bit = cib_notify_post; } else if (safe_str_eq(type, T_CIB_PRE_NOTIFY)) { bit = cib_notify_pre; } else if (safe_str_eq(type, T_CIB_UPDATE_CONFIRM)) { bit = cib_notify_confirm; } else if (safe_str_eq(type, T_CIB_DIFF_NOTIFY)) { bit = cib_notify_diff; } else if (safe_str_eq(type, T_CIB_REPLACE_NOTIFY)) { bit = cib_notify_replace; } if (on_off) { set_bit(cib_client->options, bit); } else { clear_bit(cib_client->options, bit); } if (flags & crm_ipc_client_response) { /* TODO - include rc */ crm_ipcs_send_ack(cib_client, id, flags, "ack", __FUNCTION__, __LINE__); } return; } - cib_process_request(op_request, FALSE, privileged, FALSE, cib_client); + cib_process_request(op_request, FALSE, privileged, cib_client); } int32_t cib_common_callback(qb_ipcs_connection_t * c, void *data, size_t size, gboolean privileged) { uint32_t id = 0; uint32_t flags = 0; int call_options = 0; crm_client_t *cib_client = crm_client_get(c); xmlNode *op_request = crm_ipcs_recv(cib_client, data, size, &id, &flags); if (op_request) { crm_element_value_int(op_request, F_CIB_CALLOPTS, &call_options); } if (op_request == NULL) { crm_trace("Invalid message from %p", c); crm_ipcs_send_ack(cib_client, id, flags, "nack", __FUNCTION__, __LINE__); return 0; } else if(cib_client == NULL) { crm_trace("Invalid client %p", c); return 0; } if (is_set(call_options, cib_sync_call)) { CRM_LOG_ASSERT(flags & crm_ipc_client_response); CRM_LOG_ASSERT(cib_client->request_id == 0); /* This means the client has two synchronous events in-flight */ cib_client->request_id = id; /* Reply only to the last one */ } if (cib_client->name == NULL) { const char *value = crm_element_value(op_request, F_CIB_CLIENTNAME); if (value == NULL) { cib_client->name = crm_itoa(cib_client->pid); } else { cib_client->name = strdup(value); if (crm_is_daemon_name(value)) { set_bit(cib_client->options, cib_is_daemon); } } } /* Allow cluster daemons more leeway before being evicted */ if (is_set(cib_client->options, cib_is_daemon)) { const char *qmax = cib_config_lookup("cluster-ipc-limit"); if (crm_set_client_queue_max(cib_client, qmax)) { crm_trace("IPC threshold for %s[%u] is now %u", cib_client->name, cib_client->pid, cib_client->queue_max); } } crm_xml_add(op_request, F_CIB_CLIENTID, cib_client->id); crm_xml_add(op_request, F_CIB_CLIENTNAME, cib_client->name); #if ENABLE_ACL CRM_LOG_ASSERT(cib_client->user != NULL); crm_acl_get_set_user(op_request, F_CIB_USER, cib_client->user); #endif crm_log_xml_trace(op_request, "Client[inbound]"); cib_common_callback_worker(id, flags, op_request, cib_client, privileged); free_xml(op_request); return 0; } static uint64_t ping_seq = 0; static char *ping_digest = NULL; static bool ping_modified_since = FALSE; int sync_our_cib(xmlNode * request, gboolean all); static gboolean cib_digester_cb(gpointer data) { if (cib_is_master) { char buffer[32]; xmlNode *ping = create_xml_node(NULL, "ping"); ping_seq++; free(ping_digest); ping_digest = NULL; ping_modified_since = FALSE; snprintf(buffer, 32, U64T, ping_seq); crm_trace("Requesting peer digests (%s)", buffer); crm_xml_add(ping, F_TYPE, "cib"); crm_xml_add(ping, F_CIB_OPERATION, CRM_OP_PING); crm_xml_add(ping, F_CIB_PING_ID, buffer); crm_xml_add(ping, XML_ATTR_CRM_VERSION, CRM_FEATURE_SET); send_cluster_message(NULL, crm_msg_cib, ping, TRUE); free_xml(ping); } return FALSE; } static void process_ping_reply(xmlNode *reply) { uint64_t seq = 0; const char *host = crm_element_value(reply, F_ORIG); xmlNode *pong = get_message_xml(reply, F_CIB_CALLDATA); const char *seq_s = crm_element_value(pong, F_CIB_PING_ID); const char *digest = crm_element_value(pong, XML_ATTR_DIGEST); if (seq_s) { seq = crm_int_helper(seq_s, NULL); } if(digest == NULL) { crm_trace("Ignoring ping reply %s from %s with no digest", seq_s, host); } else if(seq != ping_seq) { crm_trace("Ignoring out of sequence ping reply %s from %s", seq_s, host); } else if(ping_modified_since) { crm_trace("Ignoring ping reply %s from %s: cib updated since", seq_s, host); } else { const char *version = crm_element_value(pong, XML_ATTR_CRM_VERSION); if(ping_digest == NULL) { crm_trace("Calculating new digest"); ping_digest = calculate_xml_versioned_digest(the_cib, FALSE, TRUE, version); } crm_trace("Processing ping reply %s from %s (%s)", seq_s, host, digest); if(safe_str_eq(ping_digest, digest) == FALSE) { xmlNode *remote_cib = get_message_xml(pong, F_CIB_CALLDATA); crm_notice("Local CIB %s.%s.%s.%s differs from %s: %s.%s.%s.%s %p", crm_element_value(the_cib, XML_ATTR_GENERATION_ADMIN), crm_element_value(the_cib, XML_ATTR_GENERATION), crm_element_value(the_cib, XML_ATTR_NUMUPDATES), ping_digest, host, remote_cib?crm_element_value(remote_cib, XML_ATTR_GENERATION_ADMIN):"_", remote_cib?crm_element_value(remote_cib, XML_ATTR_GENERATION):"_", remote_cib?crm_element_value(remote_cib, XML_ATTR_NUMUPDATES):"_", digest, remote_cib); if(remote_cib && remote_cib->children) { /* Additional debug */ xml_calculate_changes(the_cib, remote_cib); xml_log_changes(LOG_INFO, __FUNCTION__, remote_cib); crm_trace("End of differences"); } free_xml(remote_cib); sync_our_cib(reply, FALSE); } } } static void do_local_notify(xmlNode * notify_src, const char *client_id, gboolean sync_reply, gboolean from_peer) { /* send callback to originating child */ crm_client_t *client_obj = NULL; int local_rc = pcmk_ok; int call_id = 0; crm_element_value_int(notify_src, F_CIB_CALLID, &call_id); if (client_id != NULL) { client_obj = crm_client_get_by_id(client_id); } if (client_obj == NULL) { local_rc = -ECONNRESET; crm_trace("No client to sent response %d to, F_CIB_CLIENTID not set.", call_id); } else { int rid = 0; if (sync_reply) { if (client_obj->ipcs) { CRM_LOG_ASSERT(client_obj->request_id); rid = client_obj->request_id; client_obj->request_id = 0; crm_trace("Sending response %d to %s %s", rid, client_obj->name, from_peer ? "(originator of delegated request)" : ""); } else { crm_trace("Sending response [call %d] to %s %s", call_id, client_obj->name, from_peer ? "(originator of delegated request)" : ""); } } else { crm_trace("Sending event %d to %s %s", call_id, client_obj->name, from_peer ? "(originator of delegated request)" : ""); } switch (client_obj->kind) { case CRM_CLIENT_IPC: if (crm_ipcs_send(client_obj, rid, notify_src, sync_reply?crm_ipc_flags_none:crm_ipc_server_event) < 0) { local_rc = -ENOMSG; } break; #ifdef HAVE_GNUTLS_GNUTLS_H case CRM_CLIENT_TLS: #endif case CRM_CLIENT_TCP: crm_remote_send(client_obj->remote, notify_src); break; default: crm_err("Unknown transport %d for %s", client_obj->kind, client_obj->name); } } if (local_rc != pcmk_ok && client_obj != NULL) { crm_warn("%sSync reply to %s failed: %s", sync_reply ? "" : "A-", client_obj ? client_obj->name : "", pcmk_strerror(local_rc)); } } static void local_notify_destroy_callback(gpointer data) { cib_local_notify_t *notify = data; free_xml(notify->notify_src); free(notify->client_id); free(notify); } static void check_local_notify(int bcast_id) { cib_local_notify_t *notify = NULL; if (!local_notify_queue) { return; } notify = g_hash_table_lookup(local_notify_queue, GINT_TO_POINTER(bcast_id)); if (notify) { do_local_notify(notify->notify_src, notify->client_id, notify->sync_reply, notify->from_peer); g_hash_table_remove(local_notify_queue, GINT_TO_POINTER(bcast_id)); } } static void queue_local_notify(xmlNode * notify_src, const char *client_id, gboolean sync_reply, gboolean from_peer) { cib_local_notify_t *notify = calloc(1, sizeof(cib_local_notify_t)); notify->notify_src = notify_src; notify->client_id = strdup(client_id); notify->sync_reply = sync_reply; notify->from_peer = from_peer; if (!local_notify_queue) { local_notify_queue = g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL, local_notify_destroy_callback); } g_hash_table_insert(local_notify_queue, GINT_TO_POINTER(cib_local_bcast_num), notify); } static void parse_local_options_v1(crm_client_t * cib_client, int call_type, int call_options, const char *host, const char *op, gboolean * local_notify, gboolean * needs_reply, gboolean * process, gboolean * needs_forward) { if (cib_op_modifies(call_type) && !(call_options & cib_inhibit_bcast)) { /* we need to send an update anyway */ *needs_reply = TRUE; } else { *needs_reply = FALSE; } if (host == NULL && (call_options & cib_scope_local)) { crm_trace("Processing locally scoped %s op from %s", op, cib_client->name); *local_notify = TRUE; } else if (host == NULL && cib_is_master) { crm_trace("Processing master %s op locally from %s", op, cib_client->name); *local_notify = TRUE; } else if (safe_str_eq(host, cib_our_uname)) { crm_trace("Processing locally addressed %s op from %s", op, cib_client->name); *local_notify = TRUE; } else if (stand_alone) { *needs_forward = FALSE; *local_notify = TRUE; *process = TRUE; } else { crm_trace("%s op from %s needs to be forwarded to %s", op, cib_client->name, host ? host : "the master instance"); *needs_forward = TRUE; *process = FALSE; } } static void parse_local_options_v2(crm_client_t * cib_client, int call_type, int call_options, const char *host, const char *op, gboolean * local_notify, gboolean * needs_reply, gboolean * process, gboolean * needs_forward) { if (cib_op_modifies(call_type)) { if(safe_str_eq(op, CIB_OP_MASTER) || safe_str_eq(op, CIB_OP_SLAVE)) { /* Always handle these locally */ *process = TRUE; *needs_reply = FALSE; *local_notify = TRUE; *needs_forward = FALSE; return; } else { /* Redirect all other updates via CPG */ *needs_reply = TRUE; *needs_forward = TRUE; *process = FALSE; crm_trace("%s op from %s needs to be forwarded to %s", op, cib_client->name, host ? host : "the master instance"); return; } } *process = TRUE; *needs_reply = FALSE; *local_notify = TRUE; *needs_forward = FALSE; if (stand_alone) { crm_trace("Processing %s op from %s (stand-alone)", op, cib_client->name); } else if (host == NULL) { crm_trace("Processing unaddressed %s op from %s", op, cib_client->name); } else if (safe_str_eq(host, cib_our_uname)) { crm_trace("Processing locally addressed %s op from %s", op, cib_client->name); } else { crm_trace("%s op from %s needs to be forwarded to %s", op, cib_client->name, host); *needs_forward = TRUE; *process = FALSE; } } static void parse_local_options(crm_client_t * cib_client, int call_type, int call_options, const char *host, const char *op, gboolean * local_notify, gboolean * needs_reply, gboolean * process, gboolean * needs_forward) { if(cib_legacy_mode()) { parse_local_options_v1(cib_client, call_type, call_options, host, op, local_notify, needs_reply, process, needs_forward); } else { parse_local_options_v2(cib_client, call_type, call_options, host, op, local_notify, needs_reply, process, needs_forward); } } static gboolean parse_peer_options_v1(int call_type, xmlNode * request, gboolean * local_notify, gboolean * needs_reply, gboolean * process, gboolean * needs_forward) { const char *op = NULL; const char *host = NULL; const char *delegated = NULL; const char *originator = crm_element_value(request, F_ORIG); const char *reply_to = crm_element_value(request, F_CIB_ISREPLY); const char *update = crm_element_value(request, F_CIB_GLOBAL_UPDATE); gboolean is_reply = safe_str_eq(reply_to, cib_our_uname); if (crm_is_true(update)) { *needs_reply = FALSE; if (is_reply) { *local_notify = TRUE; crm_trace("Processing global/peer update from %s" " that originated from us", originator); } else { crm_trace("Processing global/peer update from %s", originator); } return TRUE; } crm_trace("Processing %s request sent by %s", op, originator); op = crm_element_value(request, F_CIB_OPERATION); if (safe_str_eq(op, "cib_shutdown_req")) { /* Always process these */ *local_notify = FALSE; if (reply_to == NULL || is_reply) { *process = TRUE; } if (is_reply) { *needs_reply = FALSE; } return *process; } if (is_reply && safe_str_eq(op, CRM_OP_PING)) { process_ping_reply(request); return FALSE; } if (is_reply) { crm_trace("Forward reply sent from %s to local clients", originator); *process = FALSE; *needs_reply = FALSE; *local_notify = TRUE; return TRUE; } host = crm_element_value(request, F_CIB_HOST); if (host != NULL && safe_str_eq(host, cib_our_uname)) { crm_trace("Processing %s request sent to us from %s", op, originator); return TRUE; } else if(is_reply == FALSE && safe_str_eq(op, CRM_OP_PING)) { crm_trace("Processing %s request sent to %s by %s", op, host?host:"everyone", originator); *needs_reply = TRUE; return TRUE; } else if (host == NULL && cib_is_master == TRUE) { crm_trace("Processing %s request sent to master instance from %s", op, originator); return TRUE; } delegated = crm_element_value(request, F_CIB_DELEGATED); if (delegated != NULL) { crm_trace("Ignoring msg for master instance"); } else if (host != NULL) { /* this is for a specific instance and we're not it */ crm_trace("Ignoring msg for instance on %s", crm_str(host)); } else if (reply_to == NULL && cib_is_master == FALSE) { /* this is for the master instance and we're not it */ crm_trace("Ignoring reply to %s", crm_str(reply_to)); } else if (safe_str_eq(op, "cib_shutdown_req")) { if (reply_to != NULL) { crm_debug("Processing %s from %s", op, host); *needs_reply = FALSE; } else { crm_debug("Processing %s reply from %s", op, host); } return TRUE; } else { crm_err("Nothing for us to do?"); crm_log_xml_err(request, "Peer[inbound]"); } return FALSE; } static gboolean parse_peer_options_v2(int call_type, xmlNode * request, gboolean * local_notify, gboolean * needs_reply, gboolean * process, gboolean * needs_forward) { const char *host = NULL; const char *delegated = crm_element_value(request, F_CIB_DELEGATED); const char *op = crm_element_value(request, F_CIB_OPERATION); const char *originator = crm_element_value(request, F_ORIG); const char *reply_to = crm_element_value(request, F_CIB_ISREPLY); const char *update = crm_element_value(request, F_CIB_GLOBAL_UPDATE); gboolean is_reply = safe_str_eq(reply_to, cib_our_uname); if(safe_str_eq(op, CIB_OP_REPLACE)) { /* sync_our_cib() sets F_CIB_ISREPLY */ if (reply_to) { delegated = reply_to; } goto skip_is_reply; } else if(safe_str_eq(op, CIB_OP_SYNC)) { } else if (is_reply && safe_str_eq(op, CRM_OP_PING)) { process_ping_reply(request); return FALSE; } else if (safe_str_eq(op, CIB_OP_UPGRADE)) { /* Only the DC (node with the oldest software) should process * this operation if F_CIB_SCHEMA_MAX is unset * * If the DC is happy it will then send out another * CIB_OP_UPGRADE which will tell all nodes to do the actual * upgrade. * * Except this time F_CIB_SCHEMA_MAX will be set which puts a * limit on how far newer nodes will go */ const char *max = crm_element_value(request, F_CIB_SCHEMA_MAX); crm_trace("Parsing %s operation%s for %s with max=%s", op, is_reply?" reply":"", cib_is_master?"master":"slave", max); if(max == NULL && cib_is_master) { /* We are the DC, check if this upgrade is allowed */ goto skip_is_reply; } else if(max) { /* Ok, go ahead and upgrade to 'max' */ goto skip_is_reply; } else { return FALSE; /* Ignore */ } } else if (crm_is_true(update)) { crm_info("Detected legacy %s global update from %s", op, originator); send_sync_request(NULL); legacy_mode = TRUE; return FALSE; } else if (is_reply && cib_op_modifies(call_type)) { crm_trace("Ignoring legacy %s reply sent from %s to local clients", op, originator); return FALSE; } else if (safe_str_eq(op, "cib_shutdown_req")) { /* Legacy handling */ crm_debug("Legacy handling of %s message from %s", op, originator); *local_notify = FALSE; if (reply_to == NULL) { *process = TRUE; } return *process; } if(is_reply) { crm_trace("Handling %s reply sent from %s to local clients", op, originator); *process = FALSE; *needs_reply = FALSE; *local_notify = TRUE; return TRUE; } skip_is_reply: *process = TRUE; *needs_reply = FALSE; if(safe_str_eq(delegated, cib_our_uname)) { *local_notify = TRUE; } else { *local_notify = FALSE; } host = crm_element_value(request, F_CIB_HOST); if (host != NULL && safe_str_eq(host, cib_our_uname)) { crm_trace("Processing %s request sent to us from %s", op, originator); *needs_reply = TRUE; return TRUE; } else if (host != NULL) { /* this is for a specific instance and we're not it */ crm_trace("Ignoring %s operation for instance on %s", op, crm_str(host)); return FALSE; } else if(is_reply == FALSE && safe_str_eq(op, CRM_OP_PING)) { *needs_reply = TRUE; } crm_trace("Processing %s request sent to everyone by %s/%s on %s %s", op, crm_element_value(request, F_CIB_CLIENTNAME), crm_element_value(request, F_CIB_CALLID), originator, (*local_notify)?"(notify)":""); return TRUE; } static gboolean parse_peer_options(int call_type, xmlNode * request, gboolean * local_notify, gboolean * needs_reply, gboolean * process, gboolean * needs_forward) { /* TODO: What happens when an update comes in after node A * requests the CIB from node B, but before it gets the reply (and * sends out the replace operation) */ if(cib_legacy_mode()) { return parse_peer_options_v1( call_type, request, local_notify, needs_reply, process, needs_forward); } else { return parse_peer_options_v2( call_type, request, local_notify, needs_reply, process, needs_forward); } } static void forward_request(xmlNode * request, crm_client_t * cib_client, int call_options) { const char *op = crm_element_value(request, F_CIB_OPERATION); const char *host = crm_element_value(request, F_CIB_HOST); crm_xml_add(request, F_CIB_DELEGATED, cib_our_uname); if (host != NULL) { crm_trace("Forwarding %s op to %s", op, host); send_cluster_message(crm_get_peer(0, host), crm_msg_cib, request, FALSE); } else { crm_trace("Forwarding %s op to master instance", op); send_cluster_message(NULL, crm_msg_cib, request, FALSE); } /* Return the request to its original state */ xml_remove_prop(request, F_CIB_DELEGATED); if (call_options & cib_discard_reply) { crm_trace("Client not interested in reply"); } } static gboolean send_peer_reply(xmlNode * msg, xmlNode * result_diff, const char *originator, gboolean broadcast) { CRM_ASSERT(msg != NULL); if (broadcast) { /* this (successful) call modified the CIB _and_ the * change needs to be broadcast... * send via HA to other nodes */ int diff_add_updates = 0; int diff_add_epoch = 0; int diff_add_admin_epoch = 0; int diff_del_updates = 0; int diff_del_epoch = 0; int diff_del_admin_epoch = 0; const char *digest = NULL; int format = 1; CRM_LOG_ASSERT(result_diff != NULL); digest = crm_element_value(result_diff, XML_ATTR_DIGEST); crm_element_value_int(result_diff, "format", &format); cib_diff_version_details(result_diff, &diff_add_admin_epoch, &diff_add_epoch, &diff_add_updates, &diff_del_admin_epoch, &diff_del_epoch, &diff_del_updates); crm_trace("Sending update diff %d.%d.%d -> %d.%d.%d %s", diff_del_admin_epoch, diff_del_epoch, diff_del_updates, diff_add_admin_epoch, diff_add_epoch, diff_add_updates, digest); crm_xml_add(msg, F_CIB_ISREPLY, originator); crm_xml_add(msg, F_CIB_GLOBAL_UPDATE, XML_BOOLEAN_TRUE); crm_xml_add(msg, F_CIB_OPERATION, CIB_OP_APPLY_DIFF); crm_xml_add(msg, F_CIB_USER, CRM_DAEMON_USER); if (format == 1) { CRM_ASSERT(digest != NULL); } add_message_xml(msg, F_CIB_UPDATE_DIFF, result_diff); crm_log_xml_explicit(msg, "copy"); return send_cluster_message(NULL, crm_msg_cib, msg, TRUE); } else if (originator != NULL) { /* send reply via HA to originating node */ crm_trace("Sending request result to %s only", originator); crm_xml_add(msg, F_CIB_ISREPLY, originator); return send_cluster_message(crm_get_peer(0, originator), crm_msg_cib, msg, FALSE); } return FALSE; } -void -cib_process_request(xmlNode * request, gboolean force_synchronous, gboolean privileged, - gboolean unused, crm_client_t * cib_client) +static void +cib_process_request(xmlNode *request, gboolean force_synchronous, + gboolean privileged, crm_client_t *cib_client) { int call_type = 0; int call_options = 0; gboolean process = TRUE; gboolean is_update = TRUE; gboolean from_peer = TRUE; gboolean needs_reply = TRUE; gboolean local_notify = FALSE; gboolean needs_forward = FALSE; gboolean global_update = crm_is_true(crm_element_value(request, F_CIB_GLOBAL_UPDATE)); xmlNode *op_reply = NULL; xmlNode *result_diff = NULL; int rc = pcmk_ok; const char *op = crm_element_value(request, F_CIB_OPERATION); const char *originator = crm_element_value(request, F_ORIG); const char *host = crm_element_value(request, F_CIB_HOST); const char *target = NULL; const char *call_id = crm_element_value(request, F_CIB_CALLID); const char *client_id = crm_element_value(request, F_CIB_CLIENTID); const char *client_name = crm_element_value(request, F_CIB_CLIENTNAME); const char *reply_to = crm_element_value(request, F_CIB_ISREPLY); if (cib_client) { from_peer = FALSE; } crm_element_value_int(request, F_CIB_CALLOPTS, &call_options); if (force_synchronous) { call_options |= cib_sync_call; } if (host != NULL && strlen(host) == 0) { host = NULL; } if (host) { target = host; } else if (call_options & cib_scope_local) { target = "local host"; } else { target = "master"; } if (from_peer) { crm_trace("Processing peer %s operation from %s/%s on %s intended for %s (reply=%s)", op, client_name, call_id, originator, target, reply_to); } else { crm_xml_add(request, F_ORIG, cib_our_uname); crm_trace("Processing local %s operation from %s/%s intended for %s", op, client_name, call_id, target); } rc = cib_get_operation_id(op, &call_type); if (rc != pcmk_ok) { /* TODO: construct error reply? */ crm_err("Pre-processing of command failed: %s", pcmk_strerror(rc)); return; } if (from_peer == FALSE) { parse_local_options(cib_client, call_type, call_options, host, op, &local_notify, &needs_reply, &process, &needs_forward); } else if (parse_peer_options(call_type, request, &local_notify, &needs_reply, &process, &needs_forward) == FALSE) { return; } is_update = cib_op_modifies(call_type); if (call_options & cib_discard_reply) { needs_reply = is_update; local_notify = FALSE; } if (needs_forward) { const char *host = crm_element_value(request, F_CIB_HOST); const char *section = crm_element_value(request, F_CIB_SECTION); int log_level = LOG_INFO; if (safe_str_eq(op, CRM_OP_NOOP)) { log_level = LOG_DEBUG; } do_crm_log(log_level, "Forwarding %s operation for section %s to %s (origin=%s/%s/%s)", op, section ? section : "'all'", host ? host : cib_legacy_mode() ? "master" : "all", originator ? originator : "local", client_name, call_id); forward_request(request, cib_client, call_options); return; } if (cib_status != pcmk_ok) { const char *call = crm_element_value(request, F_CIB_CALLID); rc = cib_status; crm_err("Operation ignored, cluster configuration is invalid." " Please repair and restart: %s", pcmk_strerror(cib_status)); op_reply = create_xml_node(NULL, "cib-reply"); crm_xml_add(op_reply, F_TYPE, T_CIB); crm_xml_add(op_reply, F_CIB_OPERATION, op); crm_xml_add(op_reply, F_CIB_CALLID, call); crm_xml_add(op_reply, F_CIB_CLIENTID, client_id); crm_xml_add_int(op_reply, F_CIB_CALLOPTS, call_options); crm_xml_add_int(op_reply, F_CIB_RC, rc); crm_trace("Attaching reply output"); add_message_xml(op_reply, F_CIB_CALLDATA, the_cib); crm_log_xml_explicit(op_reply, "cib:reply"); } else if (process) { time_t finished = 0; int now = time(NULL); int level = LOG_INFO; const char *section = crm_element_value(request, F_CIB_SECTION); rc = cib_process_command(request, &op_reply, &result_diff, privileged); if (is_update == FALSE) { level = LOG_TRACE; } else if (global_update) { switch (rc) { case pcmk_ok: level = LOG_INFO; break; case -pcmk_err_old_data: case -pcmk_err_diff_resync: case -pcmk_err_diff_failed: level = LOG_TRACE; break; default: level = LOG_ERR; } } else if (rc != pcmk_ok && is_update) { level = LOG_WARNING; } do_crm_log(level, "Completed %s operation for section %s: %s (rc=%d, origin=%s/%s/%s, version=%s.%s.%s)", op, section ? section : "'all'", pcmk_strerror(rc), rc, originator ? originator : "local", client_name, call_id, the_cib ? crm_element_value(the_cib, XML_ATTR_GENERATION_ADMIN) : "0", the_cib ? crm_element_value(the_cib, XML_ATTR_GENERATION) : "0", the_cib ? crm_element_value(the_cib, XML_ATTR_NUMUPDATES) : "0"); finished = time(NULL); if (finished - now > 3) { crm_trace("%s operation took %lds to complete", op, (long)(finished - now)); crm_write_blackbox(0, NULL); } if (op_reply == NULL && (needs_reply || local_notify)) { crm_err("Unexpected NULL reply to message"); crm_log_xml_err(request, "null reply"); needs_reply = FALSE; local_notify = FALSE; } } /* from now on we are the server */ if(is_update && cib_legacy_mode() == FALSE) { crm_trace("Completed pre-sync update from %s/%s/%s%s", originator ? originator : "local", client_name, call_id, local_notify?" with local notification":""); } else if (needs_reply == FALSE || stand_alone) { /* nothing more to do... * this was a non-originating slave update */ crm_trace("Completed slave update"); } else if (cib_legacy_mode() && rc == pcmk_ok && result_diff != NULL && !(call_options & cib_inhibit_bcast)) { gboolean broadcast = FALSE; cib_local_bcast_num++; crm_xml_add_int(request, F_CIB_LOCAL_NOTIFY_ID, cib_local_bcast_num); broadcast = send_peer_reply(request, result_diff, originator, TRUE); if (broadcast && client_id && local_notify && op_reply) { /* If we have been asked to sync the reply, * and a bcast msg has gone out, we queue the local notify * until we know the bcast message has been received */ local_notify = FALSE; crm_trace("Queuing local %ssync notification for %s", (call_options & cib_sync_call) ? "" : "a-", client_id); queue_local_notify(op_reply, client_id, (call_options & cib_sync_call), from_peer); op_reply = NULL; /* the reply is queued, so don't free here */ } } else if (call_options & cib_discard_reply) { crm_trace("Caller isn't interested in reply"); } else if (from_peer) { if (is_update == FALSE || result_diff == NULL) { crm_trace("Request not broadcast: R/O call"); } else if (call_options & cib_inhibit_bcast) { crm_trace("Request not broadcast: inhibited"); } else if (rc != pcmk_ok) { crm_trace("Request not broadcast: call failed: %s", pcmk_strerror(rc)); } else { crm_trace("Directing reply to %s", originator); } send_peer_reply(op_reply, result_diff, originator, FALSE); } if (local_notify && client_id) { crm_trace("Performing local %ssync notification for %s", (call_options & cib_sync_call) ? "" : "a-", client_id); if (process == FALSE) { do_local_notify(request, client_id, call_options & cib_sync_call, from_peer); } else { do_local_notify(op_reply, client_id, call_options & cib_sync_call, from_peer); } } free_xml(op_reply); free_xml(result_diff); return; } int cib_process_command(xmlNode * request, xmlNode ** reply, xmlNode ** cib_diff, gboolean privileged) { xmlNode *input = NULL; xmlNode *output = NULL; xmlNode *result_cib = NULL; xmlNode *current_cib = NULL; int call_type = 0; int call_options = 0; const char *op = NULL; const char *section = NULL; const char *call_id = crm_element_value(request, F_CIB_CALLID); int rc = pcmk_ok; int rc2 = pcmk_ok; gboolean send_r_notify = FALSE; gboolean global_update = FALSE; gboolean config_changed = FALSE; gboolean manage_counters = TRUE; static mainloop_timer_t *digest_timer = NULL; CRM_ASSERT(cib_status == pcmk_ok); if(digest_timer == NULL) { digest_timer = mainloop_timer_add("digester", 5000, FALSE, cib_digester_cb, NULL); } *reply = NULL; *cib_diff = NULL; current_cib = the_cib; /* Start processing the request... */ op = crm_element_value(request, F_CIB_OPERATION); crm_element_value_int(request, F_CIB_CALLOPTS, &call_options); rc = cib_get_operation_id(op, &call_type); if (rc == pcmk_ok && privileged == FALSE) { rc = cib_op_can_run(call_type, call_options, privileged, global_update); } rc2 = cib_op_prepare(call_type, request, &input, §ion); if (rc == pcmk_ok) { rc = rc2; } if (rc != pcmk_ok) { crm_trace("Call setup failed: %s", pcmk_strerror(rc)); goto done; } else if (cib_op_modifies(call_type) == FALSE) { rc = cib_perform_op(op, call_options, cib_op_func(call_type), TRUE, section, request, input, FALSE, &config_changed, current_cib, &result_cib, NULL, &output); CRM_CHECK(result_cib == NULL, free_xml(result_cib)); goto done; } /* Handle a valid write action */ global_update = crm_is_true(crm_element_value(request, F_CIB_GLOBAL_UPDATE)); if (global_update) { /* legacy code */ manage_counters = FALSE; call_options |= cib_force_diff; crm_trace("Global update detected"); CRM_CHECK(call_type == 3 || call_type == 4, crm_err("Call type: %d", call_type); crm_log_xml_err(request, "bad op")); } if (rc == pcmk_ok) { ping_modified_since = TRUE; if (call_options & cib_inhibit_bcast) { /* skip */ crm_trace("Skipping update: inhibit broadcast"); manage_counters = FALSE; } if (is_not_set(call_options, cib_dryrun) && safe_str_eq(section, XML_CIB_TAG_STATUS)) { /* Copying large CIBs accounts for a huge percentage of our CIB usage */ call_options |= cib_zero_copy; } else { clear_bit(call_options, cib_zero_copy); } /* result_cib must not be modified after cib_perform_op() returns */ rc = cib_perform_op(op, call_options, cib_op_func(call_type), FALSE, section, request, input, manage_counters, &config_changed, current_cib, &result_cib, cib_diff, &output); if (manage_counters == FALSE) { int format = 1; /* Legacy code * If the diff is NULL at this point, it's because nothing changed */ if (*cib_diff) { crm_element_value_int(*cib_diff, "format", &format); } if (format == 1) { config_changed = cib_config_changed(NULL, NULL, cib_diff); } } /* Always write to disk for replace ops, * this also negates the need to detect ordering changes */ if (crm_str_eq(CIB_OP_REPLACE, op, TRUE)) { config_changed = TRUE; } } if (rc == pcmk_ok && is_not_set(call_options, cib_dryrun)) { crm_trace("Activating %s->%s%s%s", crm_element_value(current_cib, XML_ATTR_NUMUPDATES), crm_element_value(result_cib, XML_ATTR_NUMUPDATES), (is_set(call_options, cib_zero_copy)? " zero-copy" : ""), (config_changed? " changed" : "")); if(is_not_set(call_options, cib_zero_copy)) { rc = activateCibXml(result_cib, config_changed, op); crm_trace("Activated %s (%d)", crm_element_value(current_cib, XML_ATTR_NUMUPDATES), rc); } if (rc == pcmk_ok && cib_internal_config_changed(*cib_diff)) { cib_read_config(config_hash, result_cib); } if (crm_str_eq(CIB_OP_REPLACE, op, TRUE)) { if (section == NULL) { send_r_notify = TRUE; } else if (safe_str_eq(section, XML_TAG_CIB)) { send_r_notify = TRUE; } else if (safe_str_eq(section, XML_CIB_TAG_NODES)) { send_r_notify = TRUE; } else if (safe_str_eq(section, XML_CIB_TAG_STATUS)) { send_r_notify = TRUE; } } else if (crm_str_eq(CIB_OP_ERASE, op, TRUE)) { send_r_notify = TRUE; } mainloop_timer_stop(digest_timer); mainloop_timer_start(digest_timer); } else if (rc == -pcmk_err_schema_validation) { CRM_ASSERT(is_not_set(call_options, cib_zero_copy)); if (output != NULL) { crm_log_xml_info(output, "cib:output"); free_xml(output); } output = result_cib; } else { crm_trace("Not activating %d %d %s", rc, is_set(call_options, cib_dryrun), crm_element_value(result_cib, XML_ATTR_NUMUPDATES)); if(is_not_set(call_options, cib_zero_copy)) { free_xml(result_cib); } } if ((call_options & (cib_inhibit_notify|cib_dryrun)) == 0) { const char *client = crm_element_value(request, F_CIB_CLIENTNAME); crm_trace("Sending notifications %d", is_set(call_options, cib_dryrun)); cib_diff_notify(call_options, client, call_id, op, input, rc, *cib_diff); } if (send_r_notify) { const char *origin = crm_element_value(request, F_ORIG); cib_replace_notify(origin, the_cib, rc, *cib_diff); } xml_log_patchset(LOG_TRACE, "cib:diff", *cib_diff); done: if ((call_options & cib_discard_reply) == 0) { const char *caller = crm_element_value(request, F_CIB_CLIENTID); *reply = create_xml_node(NULL, "cib-reply"); crm_xml_add(*reply, F_TYPE, T_CIB); crm_xml_add(*reply, F_CIB_OPERATION, op); crm_xml_add(*reply, F_CIB_CALLID, call_id); crm_xml_add(*reply, F_CIB_CLIENTID, caller); crm_xml_add_int(*reply, F_CIB_CALLOPTS, call_options); crm_xml_add_int(*reply, F_CIB_RC, rc); if (output != NULL) { crm_trace("Attaching reply output"); add_message_xml(*reply, F_CIB_CALLDATA, output); } crm_log_xml_explicit(*reply, "cib:reply"); } crm_trace("cleanup"); if (cib_op_modifies(call_type) == FALSE && output != current_cib) { free_xml(output); output = NULL; } if (call_type >= 0) { cib_op_cleanup(call_type, call_options, &input, &output); } crm_trace("done"); return rc; } gint cib_GCompareFunc(gconstpointer a, gconstpointer b) { const xmlNode *a_msg = a; const xmlNode *b_msg = b; int msg_a_id = 0; int msg_b_id = 0; const char *value = NULL; value = crm_element_value(a_msg, F_CIB_CALLID); msg_a_id = crm_parse_int(value, NULL); value = crm_element_value(b_msg, F_CIB_CALLID); msg_b_id = crm_parse_int(value, NULL); if (msg_a_id == msg_b_id) { return 0; } else if (msg_a_id < msg_b_id) { return -1; } return 1; } void cib_peer_callback(xmlNode * msg, void *private_data) { const char *reason = NULL; const char *originator = crm_element_value(msg, F_ORIG); if (cib_legacy_mode() && (originator == NULL || crm_str_eq(originator, cib_our_uname, TRUE))) { /* message is from ourselves */ int bcast_id = 0; if (!(crm_element_value_int(msg, F_CIB_LOCAL_NOTIFY_ID, &bcast_id))) { check_local_notify(bcast_id); } return; } else if (crm_peer_cache == NULL) { reason = "membership not established"; goto bail; } if (crm_element_value(msg, F_CIB_CLIENTNAME) == NULL) { crm_xml_add(msg, F_CIB_CLIENTNAME, originator); } /* crm_log_xml_trace("Peer[inbound]", msg); */ - cib_process_request(msg, FALSE, TRUE, TRUE, NULL); + cib_process_request(msg, FALSE, TRUE, NULL); return; bail: if (reason) { const char *seq = crm_element_value(msg, F_SEQ); const char *op = crm_element_value(msg, F_CIB_OPERATION); crm_warn("Discarding %s message (%s) from %s: %s", op, seq, originator, reason); } } gboolean can_write(int flags) { return TRUE; } static gboolean cib_force_exit(gpointer data) { crm_notice("Forcing exit!"); terminate_cib(__FUNCTION__, CRM_EX_ERROR); return FALSE; } static void disconnect_remote_client(gpointer key, gpointer value, gpointer user_data) { crm_client_t *a_client = value; crm_err("Disconnecting %s... Not implemented", crm_str(a_client->name)); } void cib_shutdown(int nsig) { struct qb_ipcs_stats srv_stats; if (cib_shutdown_flag == FALSE) { int disconnects = 0; qb_ipcs_connection_t *c = NULL; cib_shutdown_flag = TRUE; c = qb_ipcs_connection_first_get(ipcs_rw); while (c != NULL) { qb_ipcs_connection_t *last = c; c = qb_ipcs_connection_next_get(ipcs_rw, last); crm_debug("Disconnecting r/w client %p...", last); qb_ipcs_disconnect(last); qb_ipcs_connection_unref(last); disconnects++; } c = qb_ipcs_connection_first_get(ipcs_ro); while (c != NULL) { qb_ipcs_connection_t *last = c; c = qb_ipcs_connection_next_get(ipcs_ro, last); crm_debug("Disconnecting r/o client %p...", last); qb_ipcs_disconnect(last); qb_ipcs_connection_unref(last); disconnects++; } c = qb_ipcs_connection_first_get(ipcs_shm); while (c != NULL) { qb_ipcs_connection_t *last = c; c = qb_ipcs_connection_next_get(ipcs_shm, last); crm_debug("Disconnecting non-blocking r/w client %p...", last); qb_ipcs_disconnect(last); qb_ipcs_connection_unref(last); disconnects++; } disconnects += crm_hash_table_size(client_connections); crm_debug("Disconnecting %d remote clients", crm_hash_table_size(client_connections)); g_hash_table_foreach(client_connections, disconnect_remote_client, NULL); crm_info("Disconnected %d clients", disconnects); } qb_ipcs_stats_get(ipcs_rw, &srv_stats, QB_FALSE); if (crm_hash_table_size(client_connections) == 0) { crm_info("All clients disconnected (%d)", srv_stats.active_connections); initiate_exit(); } else { crm_info("Waiting on %d clients to disconnect (%d)", crm_hash_table_size(client_connections), srv_stats.active_connections); } } void initiate_exit(void) { int active = 0; xmlNode *leaving = NULL; active = crm_active_peers(); if (active < 2) { terminate_cib(__FUNCTION__, 0); return; } crm_info("Sending disconnect notification to %d peers...", active); leaving = create_xml_node(NULL, "exit-notification"); crm_xml_add(leaving, F_TYPE, "cib"); crm_xml_add(leaving, F_CIB_OPERATION, "cib_shutdown_req"); send_cluster_message(NULL, crm_msg_cib, leaving, TRUE); free_xml(leaving); g_timeout_add(crm_get_msec("5s"), cib_force_exit, NULL); } extern int remote_fd; extern int remote_tls_fd; /*! * \internal * \brief Close remote sockets, free the global CIB and quit * * \param[in] caller Name of calling function (for log message) * \param[in] fast If -1, skip disconnect; if positive, exit that */ void terminate_cib(const char *caller, int fast) { crm_info("%s: Exiting%s...", caller, (fast > 0)? " fast" : mainloop ? " from mainloop" : ""); if (remote_fd > 0) { close(remote_fd); remote_fd = 0; } if (remote_tls_fd > 0) { close(remote_tls_fd); remote_tls_fd = 0; } uninitializeCib(); if (fast > 0) { /* Quit fast on error */ cib_ipc_servers_destroy(ipcs_ro, ipcs_rw, ipcs_shm); crm_exit(fast); } else if ((mainloop != NULL) && g_main_is_running(mainloop)) { /* Quit via returning from the main loop. If fast == -1, we skip the * disconnect here, and it will be done when the main loop returns * (this allows the peer status callback to avoid messing with the * peer caches). */ if (fast == 0) { crm_cluster_disconnect(&crm_cluster); } g_main_loop_quit(mainloop); } else { /* Quit via clean exit. Even the peer status callback can disconnect * here, because we're not returning control to the caller. */ crm_cluster_disconnect(&crm_cluster); cib_ipc_servers_destroy(ipcs_ro, ipcs_rw, ipcs_shm); crm_exit(CRM_EX_OK); } }