private static NetworkRingInfo mergeNetworkRingInfo(List<NetworkRingInfo> networkList)
throws ParseException {
LOG.debug("merge start..");
if (networkList.size() > 1) {
NetworkRingInfo tmp;
NetworkRingInfo result = networkList.get(0);
DateFormat dateFormat = new SimpleDateFormat(NishaDateTime.dateTimePattern);
for (int i = 1; i < networkList.size(); i++) {
tmp = networkList.get(i);
if (dateFormat
.parse(tmp.getLastChangeDate())
.after(dateFormat.parse(result.getLastChangeDate()))) {
result.setLastChangeDate(tmp.getLastChangeDate());
result.setLastChangeType(tmp.getLastChangeType());
result.setLastChangeNode(tmp.getLastChangeNode());
for (String nodeName : tmp.getNetworkNodeNames()) {
if (!result.getNetworkNodeNames().contains(nodeName)) {
result.getNetworkNodeNames().add(nodeName);
}
}
}
LOG.debug("removing {}", tmp.get_id());
CouchDbConnector.getCouchDbConnector().urisDbClient.remove(tmp.get_id(), tmp.get_rev());
}
CouchDbConnector.getCouchDbConnector().urisDbClient.update(result);
LOG.debug("network ring info merged - success");
return result;
}
return null;
}
public static boolean updateNetwork(NodeRingInfo nodeRingInfo, NetworkChangeType changeType) {
String msg;
try {
boolean createNetworkDocIfNeeded = true;
NetworkRingInfo networkRingInfo = getNetworkRingInfo(createNetworkDocIfNeeded);
if (networkRingInfo == null) {
msg = "no document of network ring info";
throw new IllegalArgumentException(msg);
}
networkRingInfo =
updateNetworkLastChange(
networkRingInfo, changeType, nodeRingInfo.getNodeDomainNameFromRingInfo());
if (changeType.equals(NetworkChangeType.NODE_ADD)) {
List<String> names = networkRingInfo.getNetworkNodeNames();
if (!names.contains(nodeRingInfo.getNodeDomainNameFromRingInfo())) {
names.add(nodeRingInfo.getNodeDomainNameFromRingInfo());
}
}
CouchDbConnector.getCouchDbConnector().urisDbClient.update(networkRingInfo);
return true;
} catch (Exception e) {
return false;
}
}
public static NetworkRingInfo getNetworkRingInfo(boolean createIfNull) {
if (createIfNull) {
prepareNetworkRingInfoIfNeeded();
}
List<NetworkRingInfo> networkRingInfoList =
CouchDbConnector.getCouchDbConnector()
.urisDbClient
.view("nisha-node-uris/network_ring_info")
.includeDocs(true)
.query(NetworkRingInfo.class);
if (networkRingInfoList.size() == 1) {
return networkRingInfoList.get(0);
} else if (networkRingInfoList.size() == 0) {
return null;
} else {
String msg = "1 networkRingInfo was expected but found: " + networkRingInfoList.size();
NetworkRingInfo result;
try {
result = mergeNetworkRingInfo(networkRingInfoList);
LOG.debug("merge success");
} catch (ParseException e) {
throw new IllegalStateException(msg + " - merge network ring info documents problem");
}
return result;
}
}
public static void prepareNetworkRingInfoIfNeeded() {
boolean networkDocExists = checkIfNetworkRingInfoExists();
if (!networkDocExists) {
NetworkRingInfo networkRingInfo = new NetworkRingInfo();
CouchDbConnector.getCouchDbConnector().urisDbClient.save(networkRingInfo);
LOG.debug(" network ring info document created");
}
}
public static boolean checkIfNetworkRingInfoExists() {
List<NetworkRingInfo> networkRingInfoList =
CouchDbConnector.getCouchDbConnector()
.urisDbClient
.view("nisha-node-uris/network_ring_info")
.includeDocs(true)
.query(NetworkRingInfo.class);
if (networkRingInfoList.size() == 1) {
return true;
} else if (networkRingInfoList.size() < 1) {
return false;
} else {
String msg = "too many networkRingInfo docs found: " + networkRingInfoList.size();
LOG.debug("{}", msg);
NetworkRingInfo result;
try {
result = mergeNetworkRingInfo(networkRingInfoList);
} catch (ParseException e) {
throw new IllegalStateException("merge network ring info documents problem");
}
return result != null;
}
}