/**
* Amazon SimpleDB client.
*
* @return the Amazon SimpleDB client
*/
public AmazonSimpleDB sdbClient() {
AmazonSimpleDB client = new AmazonSimpleDBClient(cred);
// us-east-1 has special naming
// http://docs.amazonwebservices.com/general/latest/gr/rande.html#sdb_region
if (region == null || region.equals("us-east-1")) {
client.setEndpoint("sdb.amazonaws.com");
} else {
client.setEndpoint("sdb." + region + ".amazonaws.com");
}
return client;
}
private void invalidateCustoms(String dateTime) {
String invalidsNextToken = null;
do {
SelectRequest invalidsRequest =
new SelectRequest(
"select `itemName()` from `"
+ AdWhirlUtil.DOMAIN_CUSTOMS_INVALID
+ "` where dateTime < '"
+ dateTime
+ "'");
invalidsRequest.setNextToken(invalidsNextToken);
try {
SelectResult invalidsResult = sdb.select(invalidsRequest);
invalidsNextToken = invalidsResult.getNextToken();
List<Item> invalidsList = invalidsResult.getItems();
for (Item item : invalidsList) {
String aid = item.getName();
deleteInvalid(AdWhirlUtil.DOMAIN_CUSTOMS_INVALID, aid);
}
} catch (Exception e) {
AdWhirlUtil.logException(e, log);
// Eventually we'll get a 'stale request' error and need to start over.
invalidsNextToken = null;
}
} while (invalidsNextToken != null);
}
private boolean checkRound() {
System.out.println("Start " + current);
// Add to SimpleDB
addMembership();
// Build list of servers
SelectRequest selectRequest = new SelectRequest("select * from " + simpleDBDomain);
List<Server> ss = new ArrayList<Server>();
for (Item item : sdb.select(selectRequest).getItems()) {
ss.add(new Server(item.getName()));
}
if (ss.size() > 0) {
// Probe random server and remove if inactive
int i = r.nextInt(ss.size());
Server s = ss.get(i);
System.out.println("Checking " + s);
// if(!current.equals(s)) {
if (!probe(s)) {
ss.remove(i);
}
// }
// Replace servers with new list
Collections.shuffle(ss, r);
writelock.lock();
servers = ss;
writelock.unlock();
}
System.out.println("End");
return true;
}
/*
* (non-Javadoc)
*
* @see ca.unb.cs.pcsf.db.DBAccessService#deleteCollaboration(ca.unb.cs.pcsf.db.Collaboration)
*/
public void deleteCollaboration(Collaboration collaboration) {
logger.debug(LOGPRE + "deleteCollaboration() start" + LOGPRE);
if (isCollaborationExist(collaboration.getName())) {
logger.info("Deleting participants...");
List<Participant> participants = collaboration.getParticipants();
for (Participant p : participants) {
sdb.deleteAttributes(new DeleteAttributesRequest(DOMAIN_PARTICIPANT, p.getId()));
}
sdb.deleteAttributes(
new DeleteAttributesRequest(DOMAIN_COLLABORATION, collaboration.getId()));
logger.info("Delete Done!");
logger.debug(LOGPRE + "deleteCollaboration() end" + LOGPRE);
}
}
private boolean addMembership() {
List<ReplaceableAttribute> replaceableAttributes = new ArrayList<ReplaceableAttribute>();
replaceableAttributes.add(new ReplaceableAttribute("ip", current.ip.getHostAddress(), true));
replaceableAttributes.add(new ReplaceableAttribute("port", current.port.toString(), true));
sdb.putAttributes(
new PutAttributesRequest(simpleDBDomain, current.toString(), replaceableAttributes));
return true;
}
private void deleteInvalid(String domain, String id) {
log.debug("Deleting invalid <" + domain + ", " + id + ">");
DeleteAttributesRequest deleteRequest = new DeleteAttributesRequest(domain, id);
try {
sdb.deleteAttributes(deleteRequest);
} catch (Exception e) {
AdWhirlUtil.logException(e, log);
return;
}
}
/**
* select data from a domain
*
* @param selectExpression
* @return the data selected from the domain
*/
private List<Item> getDataFromDomain(String selectExpression) {
logger.debug(LOGPRE + "getDataFromDomain() start" + LOGPRE);
logger.debug("Selecting: " + selectExpression);
logger.debug("Getting data...");
SelectRequest selectRequest = new SelectRequest(selectExpression);
logger.debug(LOGPRE + "getDataFromDomain() end" + LOGPRE);
return sdb.select(selectRequest).getItems();
}
/**
* create a domain
*
* @param domainName
* @return if the domain been created successfully
*/
private void createDomain(String domainName) {
logger.debug(LOGPRE + "createDomain() start" + LOGPRE);
if (!isDomainExist(domainName)) {
logger.info("Creating domain called <" + domainName + ">...");
sdb.createDomain(new CreateDomainRequest(domainName));
logger.info("Domain <" + domainName + "> has been created");
}
logger.debug(LOGPRE + "createDomain() end" + LOGPRE);
}
/**
* Issue a probe request to remoteip:remoteport. If the server does not respond, remove it from
* SimpleDB.
*
* @return
*/
private boolean probe(Server s) {
if (RPCClient.probe(s)) {
System.out.println(s + " Active");
return true;
} else {
System.out.println(s + " Inactive");
sdb.deleteAttributes(new DeleteAttributesRequest(simpleDBDomain, s.toString()));
System.out.println(s + " Removed");
return false;
}
}
/*
* (non-Javadoc)
*
* @see ca.unb.cs.pcsf.db.DBAccessService#updateCollaborationState(ca.unb.cs.pcsf.db.Collaboration,
* java.lang.String)
*/
public void updateCollaborationState(Collaboration collaboration, String state) {
logger.debug(LOGPRE + "updateCollaborationState() start" + LOGPRE);
logger.info("Updating collaboration <" + collaboration.getName() + "> state to be" + state);
String domainName = DOMAIN_COLLABORATION;
String itemName = collaboration.getId();
List<ReplaceableAttribute> replaceableAttributes = new ArrayList<ReplaceableAttribute>();
replaceableAttributes.add(
new ReplaceableAttribute(COLLABORATION_ATTRIBUTE_CURRENT_STATE, state, true));
sdb.putAttributes(new PutAttributesRequest(domainName, itemName, replaceableAttributes));
logger.debug(LOGPRE + "updateCollaborationState() end" + LOGPRE);
}
/*
* (non-Javadoc)
*
* @see ca.unb.cs.pcsf.db.DBAccessService#update(java.lang.Object)
*/
public void update(Object o) {
logger.debug(LOGPRE + "update() start" + LOGPRE);
if (o instanceof Collaboration) {
Collaboration collaboration = (Collaboration) o;
logger.info("Updating Collaboration <" + collaboration.getName() + ">...");
String domainName = DOMAIN_COLLABORATION;
String itemName = collaboration.getId();
List<ReplaceableAttribute> replaceableAttributes = new ArrayList<ReplaceableAttribute>();
replaceableAttributes.add(
new ReplaceableAttribute(COLLABORATION_ATTRIBUTE_NAME, collaboration.getName(), true));
for (Participant s : collaboration.getParticipants())
replaceableAttributes.add(
new ReplaceableAttribute(COLLABORATION_ATTRIBUTE_PARTICIPANT, s.getName(), true));
sdb.putAttributes(new PutAttributesRequest(domainName, itemName, replaceableAttributes));
}
if (o instanceof Participant) {
Participant participant = (Participant) o;
logger.info("Updating participant <" + participant.getName() + ">...");
String domainName = DOMAIN_PARTICIPANT;
String itemName = participant.getId();
List<ReplaceableAttribute> replaceableAttributes = new ArrayList<ReplaceableAttribute>();
replaceableAttributes.add(
new ReplaceableAttribute(PARTICIPANT_ATTRIBUTE_IS_REG, participant.getIsReg(), true));
sdb.putAttributes(new PutAttributesRequest(domainName, itemName, replaceableAttributes));
}
logger.debug(LOGPRE + "update() end" + LOGPRE);
}
/**
* check if the domain exist or not
*
* @param domainName
* @return if certain domain exist or not
*/
private boolean isDomainExist(String domainName) {
logger.debug(LOGPRE + "isDomainExist() start" + LOGPRE);
for (String dn : sdb.listDomains().getDomainNames()) {
if (dn.equals(domainName)) {
logger.debug("Domain <" + domainName + "> exists");
logger.debug(LOGPRE + "isDomainExist() end" + LOGPRE);
return true;
}
}
logger.debug("Domain <" + domainName + "> doesn't exist");
logger.debug(LOGPRE + "isDomainExist() end" + LOGPRE);
return false;
}
/*
* (non-Javadoc)
*
* @see ca.unb.cs.pcsf.db.PcsfSimpleDBAccess#setProcessDeploymentId(java.lang.String)
*/
@Override
public void setProcessDeploymentId(String collaborationId, String processDeploymentId) {
logger.debug(LOGPRE + "setProcessDeploymentId() start" + LOGPRE);
List<ReplaceableItem> items = new ArrayList<ReplaceableItem>();
ReplaceableItem item = new ReplaceableItem(collaborationId);
item.withAttributes(
new ReplaceableAttribute(
COLLABORATION_ATTRIBUTE_PROCESS_DEFINITION_ID, processDeploymentId, true));
items.add(item);
sdb.batchPutAttributes(new BatchPutAttributesRequest(DOMAIN_COLLABORATION, items));
logger.debug(LOGPRE + "setProcessDeploymentId() end" + LOGPRE);
}
/*
* (non-Javadoc)
*
* @see ca.unb.cs.pcsf.db.DBAccessService#putDataIntoDomain(java.lang.Object)
*/
public void putDataIntoDomain(Object object) {
logger.debug(LOGPRE + "putDataIntoDomain() start" + LOGPRE);
if (object instanceof Participant) {
Participant participant = (Participant) object;
List<ReplaceableItem> items = new ArrayList<ReplaceableItem>();
items.add(
new ReplaceableItem(participant.getId())
.withAttributes(
new ReplaceableAttribute(PARTICIPANT_ATTRIBUTE_NAME, participant.getName(), true),
new ReplaceableAttribute(
PARTICIPANT_ATTRIBUTE_EMAIL, participant.getEmail(), true),
new ReplaceableAttribute(
PARTICIPANT_ATTRIBUTE_COLLABORATION_ID,
participant.getCollaborationId(),
false),
new ReplaceableAttribute(
PARTICIPANT_ATTRIBUTE_IS_REG, participant.getIsReg(), true)));
logger.info("Putting participant <" + participant.getName() + "> into domain...");
sdb.batchPutAttributes(new BatchPutAttributesRequest(DOMAIN_PARTICIPANT, items));
}
if (object instanceof Creator) {
Creator creator = (Creator) object;
if (!isCreatorExist(creator.getName())) {
List<ReplaceableItem> items = new ArrayList<ReplaceableItem>();
items.add(
new ReplaceableItem(creator.getId())
.withAttributes(
new ReplaceableAttribute(CREATOR_ATTRIBUTE_NAME, creator.getName(), true),
new ReplaceableAttribute(
CREATOR_ATTRIBUTE_PASSWORD, creator.getPassword(), true),
new ReplaceableAttribute(CREATOR_ATTRIBUTE_EMAIL, creator.getEmail(), true)));
logger.info("Putting creator <" + creator.getName() + "> into domain...");
sdb.batchPutAttributes(new BatchPutAttributesRequest(DOMAIN_CREATOR, items));
}
}
if (object instanceof Collaboration) {
Collaboration collaboration = (Collaboration) object;
if (!isCollaborationExist(collaboration.getName())) {
List<ReplaceableItem> items = new ArrayList<ReplaceableItem>();
ReplaceableItem item = new ReplaceableItem(collaboration.getId());
item.withAttributes(
new ReplaceableAttribute(COLLABORATION_ATTRIBUTE_NAME, collaboration.getName(), true),
new ReplaceableAttribute(
COLLABORATION_ATTRIBUTE_CREATOR_ID, collaboration.getCreatorId(), true),
new ReplaceableAttribute(
COLLABORATION_ATTRIBUTE_CURRENT_STATE, collaboration.getCurrentState(), true),
new ReplaceableAttribute(
COLLABORATION_ATTRIBUTE_WORKFLOW_MODEL, collaboration.getWorkflowModel(), true));
List<Participant> participants = collaboration.getParticipants();
for (Participant participant : participants)
item.withAttributes(
new ReplaceableAttribute(
COLLABORATION_ATTRIBUTE_PARTICIPANT, participant.getName(), true));
items.add(item);
logger.info("Putting collaboration <" + collaboration.getName() + "> into domain...");
sdb.batchPutAttributes(new BatchPutAttributesRequest(DOMAIN_COLLABORATION, items));
}
}
logger.debug(LOGPRE + "putDataIntoDomain() end" + LOGPRE);
}