/* * Copyright 2013 Marc Nuri San Felix * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * */ package com.marcnuri.mnimapsync.index; import javax.mail.FetchProfile; import javax.mail.Folder; import javax.mail.Message; import javax.mail.MessagingException; import javax.mail.Store; /** * * @author Marc Nuri <[email protected]> */ public final class FolderCrawler implements Runnable { private final Store store; private final String folderName; private final int start; private final int end; private final Index index; protected FolderCrawler(Store store, String folderName, int start, int end, Index index) { this.store = store; this.folderName = folderName; this.start = start; this.end = end; this.index = index; } public void run() { long indexedMessages = 0L; long skippedMessages = 0L; try { final Folder folder = store.getFolder(folderName); folder.open(Folder.READ_ONLY); final Message[] messages = folder.getMessages(start, end); folder.fetch(messages, MessageId.addHeaders(new FetchProfile())); for (Message message : messages) { //Don't bother crawling if index has exceptions. Process won't continue if (index.hasCrawlException()) { return; } try { final MessageId messageId = new MessageId(message); if (index.getFolderMessages(folderName).add(messageId)) { indexedMessages++; } else { skippedMessages++; } } catch (MessageId.MessageIdException ex) { if (ex.getCause() != null) { throw new MessagingException(); } skippedMessages++; } } folder.close(false); } catch (MessagingException messagingException) { index.addCrawlException(messagingException); } index.updatedIndexedMessageCount(indexedMessages); index.updatedSkippedMessageCount(skippedMessages); } }