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| * http://www.apache.org/licenses/LICENSE-2.0 * |
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| * software distributed under the License is distributed on an * |
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| ****************************************************************/ |
| |
| package org.apache.james.adapter.mailbox; |
| |
| import jakarta.inject.Inject; |
| |
| import org.apache.james.core.Username; |
| import org.apache.james.mailbox.MailboxManager; |
| import org.apache.james.mailbox.MailboxSession; |
| import org.apache.james.mailbox.SubscriptionManager; |
| import org.apache.james.mailbox.model.MailboxACL; |
| import org.apache.james.mailbox.model.MailboxMetaData; |
| import org.apache.james.mailbox.model.MailboxPath; |
| import org.apache.james.mailbox.model.MessageRange; |
| import org.apache.james.mailbox.model.search.MailboxQuery; |
| import org.apache.james.mailbox.store.StoreMailboxManager; |
| import org.apache.james.user.api.UsernameChangeTaskStep; |
| import org.reactivestreams.Publisher; |
| |
| import com.github.fge.lambdas.Throwing; |
| |
| import reactor.core.publisher.Flux; |
| import reactor.core.publisher.Mono; |
| |
| public class MailboxUsernameChangeTaskStep implements UsernameChangeTaskStep { |
| private final StoreMailboxManager mailboxManager; |
| private final SubscriptionManager subscriptionManager; |
| |
| @Inject |
| public MailboxUsernameChangeTaskStep(StoreMailboxManager mailboxManager, SubscriptionManager subscriptionManager) { |
| this.mailboxManager = mailboxManager; |
| this.subscriptionManager = subscriptionManager; |
| } |
| |
| @Override |
| public StepName name() { |
| return new StepName("MailboxUsernameChangeTaskStep"); |
| } |
| |
| @Override |
| public int priority() { |
| return 2; |
| } |
| |
| @Override |
| public Publisher<Void> changeUsername(Username oldUsername, Username newUsername) { |
| MailboxSession fromSession = mailboxManager.createSystemSession(oldUsername); |
| MailboxSession toSession = mailboxManager.createSystemSession(newUsername); |
| |
| MailboxQuery queryUser = MailboxQuery.builder() |
| .privateNamespace() |
| .user(fromSession.getUser()) |
| .build(); |
| |
| return mailboxManager.search(queryUser, MailboxManager.MailboxSearchFetchType.Minimal, fromSession) |
| // Only keep top level, rename takes care of sub mailboxes |
| .filter(mailbox -> mailbox.getPath().getHierarchyLevels(fromSession.getPathDelimiter()).size() == 1) |
| .concatMap(mailbox -> migrateMailbox(fromSession, toSession, mailbox)) |
| .doFinally(any -> mailboxManager.endProcessingRequest(fromSession)) |
| .doFinally(any -> mailboxManager.endProcessingRequest(toSession)); |
| } |
| |
| private Mono<Void> migrateMailbox(MailboxSession fromSession, MailboxSession toSession, org.apache.james.mailbox.model.MailboxMetaData mailbox) { |
| MailboxPath renamedPath = mailbox.getPath().withUser(toSession.getUser()); |
| return mailboxManager.mailboxExists(renamedPath, toSession) |
| .flatMap(exist -> { |
| if (!exist) { |
| return renameMailboxAndRenameSubscriptionForDelegatee(fromSession, toSession, mailbox, renamedPath); |
| } else { |
| return renameWhenMailboxExist(toSession, renamedPath, |
| renameMailboxAndRenameSubscriptionForDelegatee(fromSession, toSession, mailbox, renamedPath)); |
| } |
| }); |
| } |
| |
| private Mono<Void> renameMailboxAndRenameSubscriptionForDelegatee(MailboxSession fromSession, MailboxSession toSession, MailboxMetaData mailbox, MailboxPath renamedPath) { |
| return mailboxManager.renameMailboxReactive(mailbox.getPath(), renamedPath, |
| MailboxManager.RenameOption.RENAME_SUBSCRIPTIONS, |
| fromSession, toSession) |
| .then(renameSubscriptionsForDelegatee(mailbox, renamedPath)) |
| .then(); |
| } |
| |
| // rename: renamedPath -> temporaryPath |
| // rename: mailbox.getPath -> renamedPath |
| // copy messages: temporaryPath -> renamedPath |
| // delete: temporaryPath |
| private Mono<Void> renameWhenMailboxExist(MailboxSession toSession, MailboxPath renamedPath, Mono<Void> renamePublisher) { |
| MailboxPath temporaryPath = new MailboxPath(renamedPath.getNamespace(), renamedPath.getUser(), renamedPath.getName() + "tmp"); |
| return mailboxManager.renameMailboxReactive(renamedPath, temporaryPath, |
| MailboxManager.RenameOption.NONE, toSession) |
| .then(renamePublisher) |
| .then(mailboxManager.copyMessagesReactive(MessageRange.all(), |
| temporaryPath, renamedPath, toSession) |
| .then()) |
| .then(mailboxManager.deleteMailboxReactive(temporaryPath, toSession)); |
| } |
| |
| private Mono<Void> renameSubscriptionsForDelegatee(MailboxMetaData mailbox, MailboxPath renamedPath) { |
| return Flux.fromIterable(mailbox.getResolvedAcls().getEntries().entrySet()) |
| .filter(entry -> entry.getKey().getNameType() == MailboxACL.NameType.user && !entry.getKey().isNegative()) |
| .map(entry -> Username.of(entry.getKey().getName())) |
| .concatMap(Throwing.function(userWithAccess -> { |
| MailboxSession session = mailboxManager.createSystemSession(userWithAccess); |
| return Flux.from(subscriptionManager.subscriptionsReactive(session)) |
| .filter(subscribedMailbox -> subscribedMailbox.equals(mailbox.getPath())) |
| .concatMap(any -> renameSubscription(mailbox, renamedPath, userWithAccess)) |
| .doFinally(any -> mailboxManager.endProcessingRequest(session)); |
| })) |
| .then(); |
| } |
| |
| private Mono<Void> renameSubscription(MailboxMetaData mailbox, MailboxPath renamedPath, Username user) { |
| MailboxSession session = mailboxManager.createSystemSession(user); |
| return Mono.from(subscriptionManager.subscribeReactive(renamedPath, session)) |
| .then(Mono.from(subscriptionManager.unsubscribeReactive(mailbox.getPath(), session))) |
| .doFinally(any -> mailboxManager.endProcessingRequest(session)); |
| } |
| } |