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/*
* Copyright (C) 2004 Andrew Beekhof <andrew@beekhof.net>
*
* 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 2.1 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <crm_internal.h>
#include <sys/param.h>
#include <crm/crm.h>
#include <crmd_fsa.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h> /* for access */
#include <sys/types.h> /* for calls to open */
#include <sys/stat.h> /* for calls to open */
#include <fcntl.h> /* for calls to open */
#include <pwd.h> /* for getpwuid */
#include <grp.h> /* for initgroups */
#include <sys/time.h> /* for getrlimit */
#include <sys/resource.h>/* for getrlimit */
#include <errno.h>
#include <crm/msg_xml.h>
#include <crm/common/xml.h>
#include <crmd_messages.h>
#include <crmd_callbacks.h>
#include <crm/cib.h>
#include <crmd.h>
#include <tengine.h>
#include <te_callbacks.h>
extern crm_graph_functions_t te_graph_fns;
struct crm_subsystem_s *te_subsystem = NULL;
stonith_t *stonith_api = NULL;
static void global_cib_callback(const xmlNode *msg, int callid ,int rc, xmlNode *output)
{
}
static crm_graph_t *create_blank_graph(void)
{
crm_graph_t *a_graph = unpack_graph(NULL, NULL);
a_graph->complete = TRUE;
a_graph->abort_reason = "DC Takeover";
a_graph->completion_action = tg_restart;
return a_graph;
}
/* A_TE_START, A_TE_STOP, A_TE_RESTART */
void
do_te_control(long long action,
enum crmd_fsa_cause cause,
enum crmd_fsa_state cur_state,
enum crmd_fsa_input current_input,
fsa_data_t *msg_data)
{
gboolean init_ok = TRUE;
cl_uuid_t new_uuid;
char uuid_str[UU_UNPARSE_SIZEOF];
if(action & A_TE_STOP) {
if(transition_graph) {
destroy_graph(transition_graph);
transition_graph = NULL;
}
if(fsa_cib_conn && cib_ok != fsa_cib_conn->cmds->del_notify_callback(
fsa_cib_conn, T_CIB_DIFF_NOTIFY, te_update_diff)) {
crm_err("Could not set CIB notification callback");
init_ok = FALSE;
}
clear_bit_inplace(fsa_input_register, te_subsystem->flag_connected);
crm_info("Transitioner is now inactive");
}
if((action & A_TE_START) == 0) {
return;
} else if(is_set(fsa_input_register, te_subsystem->flag_connected)) {
crm_debug("The transitioner is already active");
return;
} else if((action & A_TE_START) && cur_state == S_STOPPING) {
crm_info("Ignoring request to start %s while shutting down",
te_subsystem->name);
return;
}
cl_uuid_generate(&new_uuid);
cl_uuid_unparse(&new_uuid, uuid_str);
te_uuid = crm_strdup(uuid_str);
crm_info("Registering TE UUID: %s", te_uuid);
if(transition_trigger == NULL) {
transition_trigger = mainloop_add_trigger(
G_PRIORITY_LOW, te_graph_trigger, NULL);
}
if(cib_ok != fsa_cib_conn->cmds->add_notify_callback(
fsa_cib_conn, T_CIB_DIFF_NOTIFY, te_update_diff)) {
crm_err("Could not set CIB notification callback");
init_ok = FALSE;
}
if(cib_EXISTS != fsa_cib_conn->cmds->add_notify_callback(
fsa_cib_conn, T_CIB_DIFF_NOTIFY, te_update_diff)) {
crm_err("Set duplicate CIB notification callback");
}
if(cib_ok != fsa_cib_conn->cmds->set_op_callback(fsa_cib_conn, global_cib_callback)) {
crm_err("Could not set CIB global callback");
init_ok = FALSE;
}
if(init_ok) {
set_graph_functions(&te_graph_fns);
if(transition_graph) {
destroy_graph(transition_graph);
}
/* create a blank one */
crm_debug("Transitioner is now active");
transition_graph = create_blank_graph();
set_bit_inplace(fsa_input_register, te_subsystem->flag_connected);
}
}
/* A_TE_INVOKE, A_TE_CANCEL */
void
do_te_invoke(long long action,
enum crmd_fsa_cause cause,
enum crmd_fsa_state cur_state,
enum crmd_fsa_input current_input,
fsa_data_t *msg_data)
{
if(AM_I_DC == FALSE) {
crm_warn("Not DC: No need to invoke the TE (anymore): %s",
fsa_action2string(action));
return;
} else if(fsa_state != S_TRANSITION_ENGINE && (action & A_TE_INVOKE)) {
crm_notice("No need to invoke the TE (%s) in state %s",
fsa_action2string(action),
fsa_state2string(fsa_state));
return;
}
if(action & A_TE_CANCEL) {
crm_debug("Cancelling the transition: %s",
transition_graph->complete?"inactive":"active");
abort_transition(INFINITY, tg_restart, "Peer Cancelled", NULL);
if(transition_graph->complete == FALSE) {
crmd_fsa_stall(NULL);
}
} else if(action & A_TE_HALT) {
crm_debug("Halting the transition: %s",
transition_graph->complete?"inactive":"active");
abort_transition(INFINITY, tg_stop, "Peer Halt", NULL);
if(transition_graph->complete == FALSE) {
crmd_fsa_stall(NULL);
}
} else if(action & A_TE_INVOKE) {
const char *value = NULL;
xmlNode *graph_data = NULL;
ha_msg_input_t *input = fsa_typed_data(fsa_dt_ha_msg);
const char *ref = crm_element_value(input->msg, XML_ATTR_REFERENCE);
const char *graph_file = crm_element_value(input->msg, F_CRM_TGRAPH);
const char *graph_input = crm_element_value(input->msg, F_CRM_TGRAPH_INPUT);
if(graph_file == NULL && input->xml == NULL) {
crm_log_xml_err(input->msg, "Bad command");
register_fsa_error(C_FSA_INTERNAL, I_FAIL, NULL);
return;
}
if(transition_graph->complete == FALSE) {
crm_info("Another transition is already active");
abort_transition(INFINITY, tg_restart, "Transition Active", NULL);
return;
}
if(fsa_pe_ref == NULL || safe_str_neq(fsa_pe_ref, ref)) {
crm_info("Transition is redundant: %s vs. %s", crm_str(fsa_pe_ref), crm_str(ref));
abort_transition(INFINITY, tg_restart, "Transition Redundant", NULL);
}
graph_data = input->xml;
if(graph_data == NULL && graph_file != NULL) {
graph_data = filename2xml(graph_file);
}
CRM_CHECK(graph_data != NULL,
crm_err("Input raised by %s is invalid", msg_data->origin);
crm_log_xml_err(input->msg, "Bad command");
return);
destroy_graph(transition_graph);
transition_graph = unpack_graph(graph_data, graph_input);
CRM_CHECK(transition_graph != NULL, transition_graph = create_blank_graph(); return);
crm_info("Processing graph %d (ref=%s) derived from %s", transition_graph->id, ref, graph_input);
value = crm_element_value(graph_data, "failed-stop-offset");
if(value) {
crm_free(failed_stop_offset);
failed_stop_offset = crm_strdup(value);
}
value = crm_element_value(graph_data, "failed-start-offset");
if(value) {
crm_free(failed_start_offset);
failed_start_offset = crm_strdup(value);
}
trigger_graph();
print_graph(LOG_DEBUG_2, transition_graph);
if(graph_data != input->xml) {
free_xml(graph_data);
}
}
}

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