/****************************************************************************\
PROCEDURE NAME : immd_saf_csi_set_cb
DESCRIPTION : This is a SAF callback function which will be called
when there is any change in the HA state.
ARGUMENTS : invocation - This parameter designated a particular
invocation of this callback function. The
invoke process return invocation when it
responds to the Avilability Management
FrameWork using the saAmfResponse()
function.
compName - A pointer to the name of the component
whose readiness stae the Availability
Management Framework is setting.
haState - The new HA state to be assumeb by the
component service instance identified by
csiName.
csiDescriptor -
RETURNS : Nothing.
\*****************************************************************************/
static void immd_saf_csi_set_cb(SaInvocationT invocation,
const SaNameT *compName, SaAmfHAStateT new_haState, SaAmfCSIDescriptorT csiDescriptor)
{
SaAisErrorT error = SA_AIS_OK;
SaAmfHAStateT prev_ha_state;
bool role_change = true;
uint32_t rc = NCSCC_RC_SUCCESS;
IMMD_CB *cb = immd_cb;
TRACE_ENTER();
prev_ha_state = cb->ha_state;
/* Invoke the appropriate state handler routine */
switch (new_haState) {
case SA_AMF_HA_ACTIVE:
error = amf_active_state_handler(cb, invocation);
break;
case SA_AMF_HA_STANDBY:
error = amf_standby_state_handler(cb, invocation);
break;
case SA_AMF_HA_QUIESCED:
/* switch over */
error = amf_quiesced_state_handler(cb, invocation);
break;
case SA_AMF_HA_QUIESCING:
/* shut down */
error = amf_quiescing_state_handler(cb, invocation);
break;
default:
LOG_WA("invalid state: %d ", new_haState);
error = SA_AIS_ERR_FAILED_OPERATION;
break;
}
if (error != SA_AIS_OK)
goto response;
if (new_haState == SA_AMF_HA_QUIESCED) {
/*Note: should we not change state in cb->ha_state here.
This is done in immd_mds_quiesced_ack_process */
goto done;
}
/* Update control block */
cb->ha_state = new_haState;
TRACE_5("New-state: %s, prev-state: %s", ha_state_name(new_haState), ha_state_name(prev_ha_state));
/* Handle active to active role change. */
if (prev_ha_state == new_haState) {
TRACE_5("No role change!"); /* bug? */
role_change = false;
}
if (role_change) {
if ((rc = immd_mds_change_role(cb)) != NCSCC_RC_SUCCESS) {
LOG_WA("immd_mds_change_role FAILED");
error = SA_AIS_ERR_FAILED_OPERATION;
goto response;
}
TRACE_5("Inform MBCSV of HA state change to %s",
(new_haState == SA_AMF_HA_ACTIVE) ? "ACTIVE" : "STANDBY");
if (immd_mbcsv_chgrole(cb) != NCSCC_RC_SUCCESS) {
LOG_WA("immd_mbcsv_chgrole FAILED");
error = SA_AIS_ERR_FAILED_OPERATION;
goto response;
}
if (new_haState == SA_AMF_HA_ACTIVE) {
/* Change of role to active => We may need to elect new coord */
if(immd_cb->m2PbeCanLoad) {
LOG_IN("Electing coord in immd_saf_csi_set_cb() to ACTIVE");
immd_proc_elect_coord(cb, true);
}
immd_db_purge_fevs(cb);
}
}
response:
saAmfResponse(cb->amf_hdl, invocation, error);
done:
TRACE_LEAVE();
}
/**
* Initialize immd
*
* @return uns32
*/
static uns32 immd_initialize(void)
{
uns32 rc = NCSCC_RC_SUCCESS;
TRACE_ENTER();
if (ncs_agents_startup() != NCSCC_RC_SUCCESS) {
LOG_ER("ncs_agents_startup FAILED");
goto done;
}
if ((rc = rda_get_role(&immd_cb->ha_state)) != NCSCC_RC_SUCCESS) {
LOG_ER("rda_get_role FAILED");
goto done;
}
if ((rc = rda_register_callback(0, rda_cb)) != NCSCC_RC_SUCCESS) {
LOG_ER("rda_register_callback FAILED %u", rc);
goto done;
}
/* Init the EDU Handle */
m_NCS_EDU_HDL_INIT(&immd_cb->edu_hdl);
if ((rc = immd_cb_db_init(immd_cb)) != NCSCC_RC_SUCCESS) {
LOG_ER("immd_cb_db_init FAILED");
goto done;
}
/* Create a mail box */
if ((rc = m_NCS_IPC_CREATE(&immd_cb->mbx)) != NCSCC_RC_SUCCESS) {
LOG_ER("m_NCS_IPC_CREATE FAILED");
goto done;
}
/* Attach the IPC to mail box */
if ((rc = m_NCS_IPC_ATTACH(&immd_cb->mbx)) != NCSCC_RC_SUCCESS) {
LOG_ER("m_NCS_IPC_ATTACH FAILED");
goto done;
}
if ((rc = immd_mds_register(immd_cb)) != NCSCC_RC_SUCCESS) {
LOG_ER("immd_mds_register FAILED %d", rc);
goto done;
}
/* Initialise with the MBCSV service */
if ((rc = immd_mbcsv_register(immd_cb)) != NCSCC_RC_SUCCESS) {
LOG_ER("immd_mbcsv_register FAILED %d", rc);
goto done;
}
if ((rc = immd_mbcsv_chgrole(immd_cb)) != NCSCC_RC_SUCCESS) {
LOG_ER("immd_mbcsv_chgrole FAILED %d", rc);
goto done;
}
/* Create a selection object */
if ((rc = ncs_sel_obj_create(&immd_cb->usr1_sel_obj)) != NCSCC_RC_SUCCESS) {
LOG_ER("ncs_sel_obj_create failed");
goto done;
}
/*
* Initialize a signal handler that will use the selection object.
* The signal is sent from our script when AMF does instantiate.
*/
if ((signal(SIGUSR1, sigusr1_handler)) == SIG_ERR) {
LOG_ER("signal USR1 failed: %s", strerror(errno));
rc = NCSCC_RC_FAILURE;
goto done;
}
syslog(LOG_INFO, "Initialization Success, role %s",
(immd_cb->ha_state == SA_AMF_HA_ACTIVE) ? "ACTIVE" : "STANDBY");
done:
if (nid_notify("IMMD", rc, NULL) != NCSCC_RC_SUCCESS) {
LOG_ER("nid_notify failed");
rc = NCSCC_RC_FAILURE;
}
TRACE_LEAVE();
return rc;
}
