@Override
public void addIdealStateChangeListener(IdealStateChangeListener listener) {
NotificationContext context = new NotificationContext(this);
context.setType(NotificationContext.Type.INIT);
List<ZNRecord> idealStates = _clusterView.getPropertyList(PropertyType.IDEALSTATES);
listener.onIdealStateChange(
HelixProperty.convertToTypedList(IdealState.class, idealStates), context);
}
public static boolean verifyFileBasedClusterStates(
String instanceName, String expectedFile, String curFile) {
boolean ret = true;
ClusterView expectedView = ClusterViewSerializer.deserialize(new File(expectedFile));
ClusterView curView = ClusterViewSerializer.deserialize(new File(curFile));
// ideal_state for instance with the given instanceName
Map<String, String> idealStates = new HashMap<String, String>();
for (ZNRecord idealStateItem : expectedView.getPropertyList(PropertyType.IDEALSTATES)) {
Map<String, Map<String, String>> allIdealStates = idealStateItem.getMapFields();
for (Map.Entry<String, Map<String, String>> entry : allIdealStates.entrySet()) {
if (entry.getValue().containsKey(instanceName)) {
String state = entry.getValue().get(instanceName);
idealStates.put(entry.getKey(), state);
}
}
}
ClusterView.MemberInstance memberInstance = curView.getMemberInstance(instanceName, false);
List<ZNRecord> curStateList = memberInstance.getInstanceProperty(PropertyType.CURRENTSTATES);
if (curStateList == null && idealStates.size() > 0) {
LOG.info("current state is null");
return false;
} else if (curStateList == null && idealStates.size() == 0) {
LOG.info("empty current state and ideal state");
return true;
} else if (curStateList.size() != idealStates.size()) {
LOG.info(
"Number of current states ("
+ curStateList.size()
+ ") mismatch "
+ "number of ideal states ("
+ idealStates.size()
+ ")");
return false;
}
for (ZNRecord record : curStateList) {
String stateUnitKey = record.getId();
String curState = record.getSimpleField(stateUnitKey);
// if (!curState.equalsIgnoreCase("offline"))
// nonOfflineNr++;
if (!idealStates.containsKey(stateUnitKey)) {
LOG.error("Current state does not contain " + stateUnitKey);
ret = false;
continue;
}
String idealState = idealStates.get(stateUnitKey);
if (!curState.equalsIgnoreCase(idealState)) {
LOG.error(
"State mismatch--unit_key:"
+ stateUnitKey
+ " cur:"
+ curState
+ " ideal:"
+ idealState
+ " instance_name:"
+ instanceName);
ret = false;
continue;
}
}
return ret;
}
public static ClusterView generateStaticConfigClusterView(
String[] nodesInfo, List<DBParam> dbParams, int replica) {
// create mock cluster view
ClusterView view = new ClusterView();
// add nodes
List<ZNRecord> nodeConfigList = new ArrayList<ZNRecord>();
List<String> instanceNames = new ArrayList<String>();
Arrays.sort(
nodesInfo,
new Comparator<String>() {
@Override
public int compare(String str1, String str2) {
return str1.compareTo(str2);
}
});
// set CONFIGS
for (String nodeInfo : nodesInfo) {
int lastPos = nodeInfo.lastIndexOf(":");
if (lastPos == -1) {
throw new IllegalArgumentException(
"nodeInfo should be in format of host:port, " + nodeInfo);
}
String host = nodeInfo.substring(0, lastPos);
String port = nodeInfo.substring(lastPos + 1);
String nodeId = host + "_" + port;
ZNRecord nodeConfig = new ZNRecord(nodeId);
nodeConfig.setSimpleField(
InstanceConfigProperty.HELIX_ENABLED.toString(), Boolean.toString(true));
nodeConfig.setSimpleField(InstanceConfigProperty.HELIX_HOST.toString(), host);
nodeConfig.setSimpleField(InstanceConfigProperty.HELIX_PORT.toString(), port);
instanceNames.add(nodeId);
nodeConfigList.add(nodeConfig);
}
view.setClusterPropertyList(PropertyType.CONFIGS, nodeConfigList);
// set IDEALSTATES
// compute ideal states for each db
List<ZNRecord> idealStates = new ArrayList<ZNRecord>();
for (DBParam dbParam : dbParams) {
ZNRecord result =
IdealStateCalculatorByShuffling.calculateIdealState(
instanceNames, dbParam.partitions, replica, dbParam.name);
idealStates.add(result);
}
view.setClusterPropertyList(PropertyType.IDEALSTATES, idealStates);
// calculate messages for transition using naive algorithm
Map<String, List<ZNRecord>> msgListForInstance = new HashMap<String, List<ZNRecord>>();
List<ZNRecord> idealStatesArray = view.getPropertyList(PropertyType.IDEALSTATES);
for (ZNRecord idealStateRecord : idealStatesArray) {
// IdealState idealState = new IdealState(idealStateRecord);
List<Message> messages = computeMessagesForSimpleTransition(idealStateRecord);
for (Message message : messages) {
// logger.info("Sending message to " + message.getTgtName() +
// " transition "
// + message.getStateUnitKey() + " from:" +
// message.getFromState() +
// " to:"
// + message.getToState());
// client.addMessage(message, message.getTgtName());
String instance = message.getTgtName();
List<ZNRecord> msgList = msgListForInstance.get(instance);
if (msgList == null) {
msgList = new ArrayList<ZNRecord>();
msgListForInstance.put(instance, msgList);
}
// msgList.add(message);
addMessageInOrder(msgList, message);
}
}
// set INSTANCES
// put message lists into cluster view
List<ClusterView.MemberInstance> insList = new ArrayList<ClusterView.MemberInstance>();
for (Map.Entry<String, List<ZNRecord>> entry : msgListForInstance.entrySet()) {
String instance = entry.getKey();
List<ZNRecord> msgList = entry.getValue();
ClusterView.MemberInstance ins = view.getMemberInstance(instance, true);
ins.setInstanceProperty(PropertyType.MESSAGES, msgList);
// ins.setInstanceProperty(InstancePropertyType.CURRENTSTATES,
// null);
// ins.setInstanceProperty(InstancePropertyType.ERRORS, null);
// ins.setInstanceProperty(InstancePropertyType.STATUSUPDATES,
// null);
insList.add(ins);
}
// sort it
ClusterView.MemberInstance[] insArray = new ClusterView.MemberInstance[insList.size()];
insArray = insList.toArray(insArray);
Arrays.sort(
insArray,
new Comparator<ClusterView.MemberInstance>() {
@Override
public int compare(ClusterView.MemberInstance ins1, ClusterView.MemberInstance ins2) {
return ins1.getInstanceName().compareTo(ins2.getInstanceName());
}
});
insList = Arrays.asList(insArray);
view.setInstances(insList);
return view;
}