/** {@inheritDoc} */
@Override
public void addTopic(String topicName) throws EventBrokerException {
if (!validateTopicName(topicName)) {
throw new EventBrokerException(
"Topic name "
+ topicName
+ " is not a valid topic name. "
+ "Only alphanumeric characters, hyphens (-), stars(*),"
+ " hash(#) ,dot(.),question mark(?)"
+ " and underscores (_) are allowed.");
}
String loggedInUser = CarbonContext.getThreadLocalCarbonContext().getUsername();
try {
UserRegistry userRegistry =
this.registryService.getGovernanceSystemRegistry(
EventBrokerHolder.getInstance().getTenantId());
String resourcePath = JavaUtil.getResourcePath(topicName, this.topicStoragePath);
// we add the topic only if it does not exits. if the topic exists then
// we don't do any thing.
if (!userRegistry.resourceExists(resourcePath)) {
Collection collection = userRegistry.newCollection();
userRegistry.put(resourcePath, collection);
// Grant this user (owner) rights to update permission on newly created topic
UserRealm userRealm =
EventBrokerHolder.getInstance()
.getRealmService()
.getTenantUserRealm(CarbonContext.getThreadLocalCarbonContext().getTenantId());
userRealm
.getAuthorizationManager()
.authorizeUser(
loggedInUser, resourcePath, EventBrokerConstants.EB_PERMISSION_CHANGE_PERMISSION);
userRealm
.getAuthorizationManager()
.authorizeUser(loggedInUser, resourcePath, EventBrokerConstants.EB_PERMISSION_PUBLISH);
userRealm
.getAuthorizationManager()
.authorizeUser(
loggedInUser, resourcePath, EventBrokerConstants.EB_PERMISSION_SUBSCRIBE);
}
} catch (RegistryException e) {
throw new EventBrokerException("Cannot access the config registry", e);
} catch (UserStoreException e) {
throw new EventBrokerException(
"Error while granting user "
+ loggedInUser
+ ", permission "
+ EventBrokerConstants.EB_PERMISSION_CHANGE_PERMISSION
+ ", on topic "
+ topicName,
e);
}
}
/** {@inheritDoc} */
@Override
public String[] getBackendRoles() throws EventBrokerException {
UserRealm userRealm = CarbonContext.getThreadLocalCarbonContext().getUserRealm();
String[] cleanedRoles = new String[0];
try {
String adminRole =
EventBrokerHolder.getInstance()
.getRealmService()
.getBootstrapRealmConfiguration()
.getAdminRoleName();
String[] allRoles = userRealm.getUserStoreManager().getRoleNames();
// check if there is only admin role exists.
if (allRoles != null && allRoles.length > 1) {
// check if more roles available than admin role and anonymous role
List<String> allRolesArrayList = new ArrayList<>();
Collections.addAll(allRolesArrayList, allRoles);
Iterator<String> it = allRolesArrayList.iterator();
while (it.hasNext()) {
String nextRole = it.next();
if (nextRole.equals(adminRole)
|| nextRole.equals(CarbonConstants.REGISTRY_ANONNYMOUS_ROLE_NAME)) {
it.remove();
}
}
cleanedRoles = allRolesArrayList.toArray(new String[allRolesArrayList.size()]);
}
} catch (UserStoreException e) {
throw new EventBrokerException("Unable to get Roles from user store", e);
}
return cleanedRoles;
}
/** {@inheritDoc} */
@Override
public boolean isTopicExists(String topicName) throws EventBrokerException {
try {
UserRegistry userRegistry =
this.registryService.getGovernanceSystemRegistry(
EventBrokerHolder.getInstance().getTenantId());
String resourcePath = JavaUtil.getResourcePath(topicName, this.topicStoragePath);
return userRegistry.resourceExists(resourcePath);
} catch (RegistryException e) {
throw new EventBrokerException("Cannot access the config registry");
}
}
/**
* Adds a subscriptions to a list using the resource path provided
*
* @param resourcePath the topic nam
* @param subscriptions a list of subscriptions for the topic
* @param pathsQueue the topic folder
* @param withChildren to add subscriptions to children. i.e subtopics
* @throws EventBrokerException
*/
private void addSubscriptions(
String resourcePath,
List<Subscription> subscriptions,
Queue<String> pathsQueue,
boolean withChildren)
throws EventBrokerException {
try {
UserRegistry userRegistry =
this.registryService.getGovernanceSystemRegistry(
EventBrokerHolder.getInstance().getTenantId());
String subscriptionsPath = getSubscriptionsPath(resourcePath);
// first if there are subscriptions for this topic add them. else go to the other folders.
if (userRegistry.resourceExists(subscriptionsPath)) {
Collection collection = (Collection) userRegistry.get(subscriptionsPath);
for (String subscriptionPath : collection.getChildren()) {
Resource subscriptionResource = userRegistry.get(subscriptionPath);
Subscription subscription = JavaUtil.getSubscription(subscriptionResource);
subscription.setTopicName(removeResourcePath(resourcePath));
if (subscriptionPath.endsWith("/")) {
subscriptionPath = subscriptionsPath.substring(0, subscriptionPath.lastIndexOf("/"));
}
subscription.setId(subscriptionPath.substring(subscriptionPath.lastIndexOf("/") + 1));
subscriptions.add(subscription);
}
}
// add child subscriptions only for resource collections
if (withChildren) {
Resource resource = userRegistry.get(resourcePath);
if (resource instanceof Collection) {
Collection childResources = (Collection) resource;
for (String childResourcePath : childResources.getChildren()) {
if ((!EventBrokerConstants.EB_CONF_WS_SUBSCRIPTION_COLLECTION_NAME.contains(
childResourcePath))
&& (!EventBrokerConstants.EB_CONF_JMS_SUBSCRIPTION_COLLECTION_NAME.contains(
childResourcePath))) {
// i.e. this folder is a topic folder
pathsQueue.add(childResourcePath);
}
}
}
}
} catch (RegistryException e) {
throw new EventBrokerException("Cannot access the registry", e);
}
}
/** {@inheritDoc} */
@Override
public TopicNode getTopicTree() throws EventBrokerException {
try {
UserRegistry userRegistry =
this.registryService.getGovernanceSystemRegistry(
EventBrokerHolder.getInstance().getTenantId());
if (!userRegistry.resourceExists(topicStoragePath)) {
userRegistry.put(topicStoragePath, userRegistry.newCollection());
}
Resource root = userRegistry.get(this.topicStoragePath);
TopicNode rootTopic = new TopicNode("/", "/");
buildTopicTree(rootTopic, (Collection) root, userRegistry);
return rootTopic;
} catch (RegistryException e) {
throw new EventBrokerException(e.getMessage(), e);
}
}
/** {@inheritDoc} */
@Override
public boolean removeTopic(String topicName) throws EventBrokerException {
try {
UserRegistry userRegistry =
this.registryService.getGovernanceSystemRegistry(
EventBrokerHolder.getInstance().getTenantId());
String resourcePath = JavaUtil.getResourcePath(topicName, this.topicStoragePath);
removeRoleCreateForLoggedInUser(topicName);
if (userRegistry.resourceExists(resourcePath)) {
userRegistry.delete(resourcePath);
return true;
} else {
return false;
}
} catch (RegistryException e) {
throw new EventBrokerException("Cannot access the config registry", e);
}
}
/** {@inheritDoc} */
@Override
public Subscription[] getJMSSubscriptions(String topicName) throws EventBrokerException {
try {
Subscription[] subscriptionsArray = new Subscription[0];
UserRegistry userRegistry =
this.registryService.getGovernanceSystemRegistry(
EventBrokerHolder.getInstance().getTenantId());
String resourcePath = JavaUtil.getResourcePath(topicName, this.topicStoragePath);
if (!resourcePath.endsWith("/")) {
resourcePath = resourcePath + "/";
}
resourcePath = resourcePath + EventBrokerConstants.EB_CONF_JMS_SUBSCRIPTION_COLLECTION_NAME;
// Get subscriptions
if (userRegistry.resourceExists(resourcePath)) {
Collection subscriptionCollection = (Collection) userRegistry.get(resourcePath);
subscriptionsArray = new Subscription[subscriptionCollection.getChildCount()];
int index = 0;
for (String subs : subscriptionCollection.getChildren()) {
Collection subscription = (Collection) userRegistry.get(subs);
Subscription subscriptionDetails = new Subscription();
subscriptionDetails.setId(subscription.getProperty("Name"));
subscriptionDetails.setOwner(subscription.getProperty("Owner"));
subscriptionDetails.setCreatedTime(
ConverterUtil.convertToDate(subscription.getProperty("createdTime")));
subscriptionsArray[index++] = subscriptionDetails;
}
}
return subscriptionsArray;
} catch (RegistryException e) {
throw new EventBrokerException("Cannot read the registry resources ", e);
}
}
/** {@inheritDoc} */
@Override
public TopicRolePermission[] getTopicRolePermission(String topicName)
throws EventBrokerException {
String topicResourcePath = JavaUtil.getResourcePath(topicName, this.topicStoragePath);
List<TopicRolePermission> topicRolePermissions = new ArrayList<TopicRolePermission>();
UserRealm userRealm = CarbonContext.getThreadLocalCarbonContext().getUserRealm();
String adminRole =
EventBrokerHolder.getInstance()
.getRealmService()
.getBootstrapRealmConfiguration()
.getAdminRoleName();
TopicRolePermission topicRolePermission;
try {
for (String role : userRealm.getUserStoreManager().getRoleNames()) {
// remove admin role and anonymous role related permissions
if (!(role.equals(adminRole)
|| CarbonConstants.REGISTRY_ANONNYMOUS_ROLE_NAME.equals(role))) {
topicRolePermission = new TopicRolePermission();
topicRolePermission.setRoleName(role);
topicRolePermission.setAllowedToSubscribe(
userRealm
.getAuthorizationManager()
.isRoleAuthorized(
role, topicResourcePath, EventBrokerConstants.EB_PERMISSION_SUBSCRIBE));
topicRolePermission.setAllowedToPublish(
userRealm
.getAuthorizationManager()
.isRoleAuthorized(
role, topicResourcePath, EventBrokerConstants.EB_PERMISSION_PUBLISH));
topicRolePermissions.add(topicRolePermission);
}
}
return topicRolePermissions.toArray(new TopicRolePermission[topicRolePermissions.size()]);
} catch (UserStoreException e) {
throw new EventBrokerException("Cannot access the UserStore manager ", e);
}
}
/**
* Initializes Registry Topic Manager
*
* @param topicStoragePath the topic registry path
*/
public RegistryTopicManager(String topicStoragePath) {
this.topicStoragePath = topicStoragePath;
this.registryService = EventBrokerHolder.getInstance().getRegistryService();
}