| /**************************************************************** |
| * Licensed to the Apache Software Foundation (ASF) under one * |
| * or more contributor license agreements. See the NOTICE file * |
| * distributed with this work for additional information * |
| * regarding copyright ownership. The ASF licenses this file * |
| * to you 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 org.apache.james.transport.mailets; |
| |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Optional; |
| |
| import javax.inject.Inject; |
| import javax.mail.MessagingException; |
| |
| import org.apache.james.core.MailAddress; |
| import org.apache.james.user.api.UsersRepository; |
| import org.apache.mailet.Mail; |
| import org.apache.mailet.StorageDirective; |
| import org.apache.mailet.base.GenericMailet; |
| |
| import com.github.fge.lambdas.consumers.ThrowingConsumer; |
| import com.google.common.base.Preconditions; |
| import com.google.common.base.Splitter; |
| import com.google.common.collect.ImmutableList; |
| |
| /** |
| * WithStorageDirective position storage directive for the recipients of this email. |
| * |
| * These directives are used by <strong>LocalDelivery</strong> mailet when adding the email to the recipients mailboxes. |
| * |
| * The following storage directives can be set: |
| * - targetFolderNames: the folders to append the email in. Defaults to none (INBOX). Coma separated list of folder names. |
| * Fallback to targetFolderName. |
| * - targetFolderName: the folder to append the email in. Defaults to none (INBOX). |
| * - seen: boolean, whether the message should be automatically marked as seen. Defaults to false. |
| * - important: boolean, whether the message should be automatically marked as important. Defaults to false. |
| * - keywords: set of string, encoded as a string (value are coma separated). IMAP user flags to set for the message. Defaults to none. |
| * |
| * At least one of the storage directives should be set. |
| * |
| * Example: |
| * |
| * <mailet match="IsMarkedAsSpam" class="WithStorageDirective"> |
| * <targetFolderName>Spam</targetFolderName> |
| * <seen>true</seen> |
| * <important>true</important> |
| * <keywords>keyword1,keyword2</keywords> |
| * </mailet> |
| * |
| * Alternatively, several target folders can be specified: |
| * |
| * <mailet match="IsMarkedAsSpam" class="WithStorageDirective"> |
| * <targetFolderNames>Important, INBOX</targetFolderNames> |
| * <seen>true</seen> |
| * <important>true</important> |
| * <keywords>keyword1,keyword2</keywords> |
| * </mailet> |
| * |
| */ |
| public class WithStorageDirective extends GenericMailet { |
| static final String TARGET_FOLDER_NAME = "targetFolderName"; |
| static final String TARGET_FOLDER_NAMES = "targetFolderNames"; |
| static final String SEEN = "seen"; |
| static final String IMPORTANT = "important"; |
| static final String KEYWORDS = "keywords"; |
| private static final Splitter KEYWORD_SPLITTER = Splitter.on(',') |
| .omitEmptyStrings() |
| .trimResults(); |
| |
| private final UsersRepository usersRepository; |
| |
| private StorageDirective storageDirective; |
| |
| @Inject |
| public WithStorageDirective(UsersRepository usersRepository) { |
| this.usersRepository = usersRepository; |
| } |
| |
| @Override |
| public void init() throws MessagingException { |
| Preconditions.checkState(validBooleanParameter(getInitParameterAsOptional(SEEN)), "'%s' needs to be a boolean", SEEN); |
| Preconditions.checkState(validBooleanParameter(getInitParameterAsOptional(IMPORTANT)), "'%s' needs to be a boolean", IMPORTANT); |
| |
| storageDirective = StorageDirective.builder() |
| .targetFolders(targetFolders()) |
| .seen(getInitParameterAsOptional(SEEN).map(Boolean::parseBoolean)) |
| .important(getInitParameterAsOptional(IMPORTANT).map(Boolean::parseBoolean)) |
| .keywords(getInitParameterAsOptional(KEYWORDS).map(this::parseKeywords)) |
| .build(); |
| } |
| |
| private Optional<List<String>> targetFolders() { |
| return getInitParameterAsOptional(TARGET_FOLDER_NAMES) |
| .map(names -> Splitter.on(',').omitEmptyStrings().trimResults().splitToList(names)) |
| .or(() -> getInitParameterAsOptional(TARGET_FOLDER_NAME).map(ImmutableList::of)); |
| } |
| |
| private Collection<String> parseKeywords(String s) { |
| return KEYWORD_SPLITTER |
| .splitToList(s); |
| } |
| |
| private boolean validBooleanParameter(Optional<String> parameter) { |
| return parameter.map(v -> v.equals("true") || v.equals("false")) |
| .orElse(true); |
| } |
| |
| @Override |
| public void service(Mail mail) throws MessagingException { |
| mail.getRecipients() |
| .forEach(addStorageDirective(mail)); |
| } |
| |
| public ThrowingConsumer<MailAddress> addStorageDirective(Mail mail) { |
| return recipient -> storageDirective.encodeAsAttributes(usersRepository.getUsername(recipient)) |
| .forEach(mail::setAttribute); |
| } |
| } |