void
d_nameSpacesListenerAction(
d_listener listener,
d_message message)
{
d_durability durability;
d_admin admin;
d_publisher publisher;
d_fellow fellow;
c_bool allowed;
d_nameSpace nameSpace, localNameSpace, oldFellowNameSpace;
c_ulong count;
d_configuration config;
d_nameSpacesRequest nsRequest;
d_networkAddress sender;
d_subscriber subscriber;
d_sampleChainListener sampleChainListener;
struct compatibilityHelper helper;
d_adminStatisticsInfo info;
c_bool added;
os_time srcTime , curTime, difTime, maxDifTime;
struct checkFellowMasterHelper fellowMasterHelper;
d_name role;
c_iter fellowNameSpaces;
d_nameSpace ns;
assert(d_listenerIsValid(d_listener(listener), D_NAMESPACES_LISTENER));
admin = d_listenerGetAdmin(listener);
publisher = d_adminGetPublisher(admin);
durability = d_adminGetDurability(admin);
config = d_durabilityGetConfiguration(durability);
fellowNameSpaces = NULL;
d_printTimedEvent (durability, D_LEVEL_FINE,
D_THREAD_NAMESPACES_LISTENER,
"Received nameSpace from fellow %d (his master: %d, confirmed: %d, mergeState: %s, %d).\n",
message->senderAddress.systemId,
d_nameSpaces(message)->master.systemId,
d_nameSpaces(message)->masterConfirmed,
d_nameSpaces(message)->state.role,
d_nameSpaces(message)->state.value);
sender = d_networkAddressNew(message->senderAddress.systemId,
message->senderAddress.localId,
message->senderAddress.lifecycleId);
fellow = d_adminGetFellow(admin, sender);
if(!fellow){
d_printTimedEvent (durability, D_LEVEL_FINE,
D_THREAD_NAMESPACES_LISTENER,
"Fellow %d unknown, administrating it.\n",
message->senderAddress.systemId);
fellow = d_fellowNew(sender, message->senderState);
d_fellowUpdateStatus(fellow, message->senderState, v_timeGet());
added = d_adminAddFellow(admin, fellow);
if(added == FALSE){
d_fellowFree(fellow);
fellow = d_adminGetFellow(admin, sender);
assert(fellow);
} else {
fellow = d_adminGetFellow(admin, sender); /*Do this to allow fellowFree at the end*/
nsRequest = d_nameSpacesRequestNew(admin);
d_messageSetAddressee(d_message(nsRequest), sender);
d_publisherNameSpacesRequestWrite(publisher, nsRequest, sender);
d_nameSpacesRequestFree(nsRequest);
}
}
d_fellowUpdateStatus(fellow, message->senderState, v_timeGet());
nameSpace = d_nameSpaceFromNameSpaces(config, d_nameSpaces(message));
if(d_fellowGetCommunicationState(fellow) == D_COMMUNICATION_STATE_APPROVED){
/* Get old namespace of fellow */
oldFellowNameSpace = d_nameSpaceCopy (d_fellowGetNameSpace (fellow, nameSpace));
/* Update master of fellow nameSpace */
added = d_fellowAddNameSpace(fellow, nameSpace);
/* Create namespace with local policy (if a match exists) */
localNameSpace = d_nameSpaceNew (config, d_nameSpaceGetName(nameSpace));
/* If namespace is created, add to administration */
if (localNameSpace) {
/* Copy partitions to local nameSpace */
d_nameSpaceCopyPartitions (localNameSpace, nameSpace);
d_adminAddNameSpace (admin, localNameSpace);
d_nameSpaceFree (localNameSpace);
}
/* If fellow is master for a namespace, report it to admin */
fellowMasterHelper.admin = admin;
fellowMasterHelper.fellow = d_fellowGetAddress(fellow);
fellowMasterHelper.oldNameSpace = oldFellowNameSpace;
checkFellowMasterWalk (nameSpace, &fellowMasterHelper);
d_free (fellowMasterHelper.fellow);
/* If the namespace was not added to the fellow (because it already existed there), free it */
if(!added){
d_nameSpaceFree(nameSpace);
}
d_nameSpaceFree (oldFellowNameSpace);
} else {
info = d_adminStatisticsInfoNew();
d_fellowSetExpectedNameSpaces(fellow, d_nameSpaces(message)->total);
d_fellowAddNameSpace(fellow, nameSpace);
count = d_fellowNameSpaceCount(fellow);
if(count == d_nameSpaces(message)->total){
allowed = isFellowStateCompatible(durability, fellow);
if(allowed == TRUE){
config = d_durabilityGetConfiguration(durability);
helper.fellow = fellow;
helper.compatible = TRUE;
d_adminNameSpaceWalk (admin, areFellowNameSpacesCompatible, &helper);
if(helper.compatible == TRUE){
if(config->timeAlignment == TRUE){
curTime.tv_sec = d_readerListener(listener)->lastInsertTime.seconds;
curTime.tv_nsec = d_readerListener(listener)->lastInsertTime.nanoseconds;
srcTime.tv_sec = d_readerListener(listener)->lastSourceTime.seconds;
srcTime.tv_nsec = d_readerListener(listener)->lastSourceTime.nanoseconds;
maxDifTime.tv_sec = 1; /*1s*/
maxDifTime.tv_nsec = 0;
difTime = os_timeAbs(os_timeSub(curTime, srcTime));
if(os_timeCompare(difTime, maxDifTime) == OS_MORE){
d_printTimedEvent (durability, D_LEVEL_WARNING,
D_THREAD_NAMESPACES_LISTENER,
"Estimated time difference including latency with " \
"fellow %d is %f seconds, which is larger then " \
"expected.\n",
message->senderAddress.systemId,
os_timeToReal(difTime));
OS_REPORT_2(OS_WARNING, D_CONTEXT, 0,
"Estimated time difference including latency " \
"with fellow '%d' is larger then expected " \
"(%f seconds). Durability alignment might not be " \
"reliable. Please align time between these nodes " \
"and restart.",
message->senderAddress.systemId,
os_timeToReal(difTime));
} else {
d_printTimedEvent (durability, D_LEVEL_FINER,
D_THREAD_NAMESPACES_LISTENER,
"Estimated time difference including latency with " \
"fellow %d is %f seconds.\n",
message->senderAddress.systemId,
os_timeToReal(difTime));
}
}
/* Set role of fellow (take native role from namespace) */
role = d_nameSpaceGetRole(nameSpace);
d_fellowSetRole (fellow, role);
os_free (role);
d_fellowSetCommunicationState(fellow, D_COMMUNICATION_STATE_APPROVED);
info->fellowsApprovedDif += 1;
subscriber = d_adminGetSubscriber(admin);
sampleChainListener = d_subscriberGetSampleChainListener(subscriber);
if(sampleChainListener){
d_sampleChainListenerTryFulfillChains(sampleChainListener, NULL);
}
/* Check if the fellow is master for one or more namespaces and report this to admin */
fellowNameSpaces = c_iterNew(NULL);
/* Collect fellow namespaces */
d_fellowNameSpaceWalk (fellow, collectFellowNsWalk, fellowNameSpaces);
fellowMasterHelper.admin = admin;
fellowMasterHelper.fellow = d_fellowGetAddress(fellow);
fellowMasterHelper.oldNameSpace = NULL;
c_iterWalk (fellowNameSpaces, checkFellowMasterWalk, &fellowMasterHelper);
while ((ns = c_iterTakeFirst(fellowNameSpaces))) {
d_nameSpaceFree(ns);
}
c_iterFree(fellowNameSpaces);
d_free (fellowMasterHelper.fellow);
} else {
info->fellowsIncompatibleDataModelDif += 1;
d_printTimedEvent (durability, D_LEVEL_WARNING,
D_THREAD_NAMESPACES_LISTENER,
"Communication with fellow %d NOT approved, because data model is not compatible\n",
message->senderAddress.systemId);
d_fellowSetCommunicationState(fellow, D_COMMUNICATION_STATE_INCOMPATIBLE_DATA_MODEL);
}
} else {
info->fellowsIncompatibleStateDif += 1;
d_printTimedEvent (durability, D_LEVEL_WARNING,
D_THREAD_NAMESPACES_LISTENER,
"Communication with fellow %d NOT approved, because state is not compatible my state: %d, fellow state: %d\n",
message->senderAddress.systemId,
d_durabilityGetState(durability),
message->senderState);
d_fellowSetCommunicationState(fellow, D_COMMUNICATION_STATE_INCOMPATIBLE_STATE);
}
} else {
d_printTimedEvent (durability, D_LEVEL_WARNING,
D_THREAD_NAMESPACES_LISTENER,
"Received %u of %u nameSpaces from fellow %u.\n",
count, d_nameSpaces(message)->total,
message->senderAddress.systemId);
}
d_adminUpdateStatistics(admin, info);
d_adminStatisticsInfoFree(info);
}
d_fellowFree(fellow);
d_networkAddressFree(sender);
return;
}
d_subscriber
d_subscriberNew(
d_admin admin)
{
d_subscriber subscriber;
d_durability durability;
d_configuration config;
v_subscriberQos subscriberQos, psubscriberQos;
c_char* partitionExpr;
struct initialQualityWalkData walkData;
d_storeResult result;
d_nameSpace nameSpace;
c_iter nameSpaces;
c_bool nsComplete;
d_durabilityKind dkind;
subscriber = NULL;
if(admin){
subscriber = d_subscriber(os_malloc(C_SIZEOF(d_subscriber)));
d_objectInit(d_object(subscriber), D_SUBSCRIBER, d_subscriberDeinit);
subscriber->admin = admin;
durability = d_adminGetDurability(admin);
config = d_durabilityGetConfiguration(durability);
subscriberQos = d_subscriberQosNew(config->partitionName);
partitionExpr = getPersistentPartitionExpression(admin, durability);
psubscriberQos = d_subscriberQosNew(partitionExpr);
os_free(partitionExpr);
subscriber->subscriber = u_subscriberNew (u_participant(d_durabilityGetService(durability)),
config->subscriberName,
subscriberQos,
TRUE);
subscriber->waitset = d_waitsetNew(subscriber, FALSE, FALSE);
subscriber->persistentStore = d_storeOpen(durability, config->persistentStoreMode);
if(subscriber->persistentStore) {
if(psubscriberQos->partition){
/* Collect nameSpaces from admin. */
nameSpaces = d_adminNameSpaceCollect(admin);
/* Loop nameSpaces */
while((nameSpace = c_iterTakeFirst(nameSpaces))) {
dkind = d_nameSpaceGetDurabilityKind(nameSpace);
/* Walk only over persistent nameSpaces */
if((dkind == D_DURABILITY_PERSISTENT) || (dkind == D_DURABILITY_ALL)){
/* If persistent nameSpace is not complete, restore backup */
result = d_storeNsIsComplete (subscriber->persistentStore, nameSpace, &nsComplete);
if ( (result == D_STORE_RESULT_OK) && !nsComplete)
{
/* Incomplete namespace, restore backup. */
d_printTimedEvent(durability, D_LEVEL_WARNING,
D_THREAD_GROUP_LOCAL_LISTENER,
"Namespace '%s' is incomplete, trying to restore backup.\n",
d_nameSpaceGetName(nameSpace));
if (d_storeRestoreBackup (subscriber->persistentStore, nameSpace) != D_STORE_RESULT_OK)
{
d_printTimedEvent(durability, D_LEVEL_WARNING,
D_THREAD_GROUP_LOCAL_LISTENER,
"Backup for namespace '%s' could not be restored as no complete backup did exist on disk. Marking namespace as incomplete and continuing.\n",
d_nameSpaceGetName(nameSpace));
OS_REPORT_1(OS_WARNING, D_CONTEXT_DURABILITY, 0,
"Backup for namespace '%s' could not be restored as no complete backup did exist on disk. Marking namespace as incomplete and continuing.\n",
d_nameSpaceGetName (nameSpace));
/* If backup fails, mark master state for nameSpace !D_STATE_COMPLETE */
d_nameSpaceSetMasterState (nameSpace, D_STATE_INIT);
}
}
}
d_nameSpaceFree(nameSpace);
}
/* Free nameSpaces iterator */
assert(c_iterLength(nameSpaces) == 0);
c_iterFree(nameSpaces);
subscriber->persistentSubscriber = u_subscriberNew(u_participant(d_durabilityGetService(durability)),
config->subscriberName,
psubscriberQos,
TRUE);
assert(subscriber->persistentSubscriber);
} else {
subscriber->persistentSubscriber = NULL;
}
walkData.subscriber = subscriber;
walkData.i = 0;
d_adminNameSpaceWalk(admin, nsInitialQualityWalk, &walkData);
} else {
subscriber->persistentSubscriber = NULL;
}
assert(subscriber->subscriber);
if(subscriber->subscriber){
subscriber->statusListener = NULL;
subscriber->groupLocalListener = NULL;
subscriber->groupRemoteListener = NULL;
subscriber->groupsRequestListener = NULL;
subscriber->sampleRequestListener = NULL;
subscriber->sampleChainListener = NULL;
subscriber->nameSpacesRequestListener = NULL;
subscriber->nameSpacesListener = NULL;
subscriber->persistentDataListener = NULL;
subscriber->deleteDataListener = NULL;
} else {
d_subscriberFree(subscriber);
subscriber = NULL;
}
d_subscriberQosFree(subscriberQos);
d_subscriberQosFree(psubscriberQos);
}
return subscriber;
}