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50e0a9b532
The main thrust of this is to create a common POJO that contains email content in a simple way, then have one class that converts that to an email and sends it. Any class that uses email should only have to deal with creating that POJO. ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=237883643
91 lines
3.3 KiB
Java
91 lines
3.3 KiB
Java
// Copyright 2017 The Nomulus Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package google.registry.util;
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import static com.google.common.collect.Iterables.toArray;
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import com.google.common.net.MediaType;
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import google.registry.util.EmailMessage.Attachment;
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import java.io.IOException;
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import java.util.Properties;
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import javax.inject.Inject;
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import javax.inject.Singleton;
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import javax.mail.BodyPart;
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import javax.mail.Message;
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import javax.mail.Message.RecipientType;
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import javax.mail.MessagingException;
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import javax.mail.Multipart;
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import javax.mail.Session;
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import javax.mail.internet.InternetAddress;
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import javax.mail.internet.MimeBodyPart;
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import javax.mail.internet.MimeMessage;
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import javax.mail.internet.MimeMultipart;
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/**
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* Wrapper around javax.mail's email creation and sending functionality. Encompasses a retry policy
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* as well.
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*/
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@Singleton
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public class SendEmailService {
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private final Retrier retrier;
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private final TransportEmailSender transportEmailSender;
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@Inject
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SendEmailService(Retrier retrier, TransportEmailSender transportEmailSender) {
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this.retrier = retrier;
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this.transportEmailSender = transportEmailSender;
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}
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/**
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* Converts the provided message content into a {@link javax.mail.Message} and sends it with
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* retry on transient failures.
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*/
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public void sendEmail(EmailMessage emailMessage) {
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retrier.callWithRetry(
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() -> {
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Message msg =
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new MimeMessage(
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Session.getDefaultInstance(new Properties(), /* authenticator= */ null));
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msg.setFrom(emailMessage.from());
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msg.addRecipients(
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RecipientType.TO, toArray(emailMessage.recipients(), InternetAddress.class));
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msg.setSubject(emailMessage.subject());
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Multipart multipart = new MimeMultipart();
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BodyPart bodyPart = new MimeBodyPart();
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bodyPart.setContent(
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emailMessage.body(),
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emailMessage.contentType().orElse(MediaType.PLAIN_TEXT_UTF_8).toString());
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multipart.addBodyPart(bodyPart);
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if (emailMessage.attachment().isPresent()) {
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Attachment attachment = emailMessage.attachment().get();
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BodyPart attachmentPart = new MimeBodyPart();
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attachmentPart.setContent(attachment.content(), attachment.contentType().toString());
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attachmentPart.setFileName(attachment.filename());
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multipart.addBodyPart(attachmentPart);
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}
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if (emailMessage.bcc().isPresent()) {
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msg.addRecipient(RecipientType.BCC, emailMessage.bcc().get());
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}
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msg.setContent(multipart);
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msg.saveChanges();
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transportEmailSender.sendMessage(msg);
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},
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IOException.class,
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MessagingException.class);
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}
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}
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