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86 changes: 86 additions & 0 deletions
86
...c/main/java/com/disposableemail/apache/james/mailet/producer/kafka/KafkaProducerMailet.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| package com.disposableemail.apache.james.mailet.producer.kafka | ||
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| import org.apache.kafka.clients.admin.AdminClient | ||
| import org.apache.kafka.clients.admin.AdminClientConfig | ||
| import org.apache.kafka.clients.admin.NewTopic | ||
| import org.apache.kafka.clients.producer.ProducerConfig | ||
| import org.apache.kafka.common.serialization.StringSerializer | ||
| import org.apache.mailet.Mail | ||
| import org.apache.mailet.base.GenericMailet | ||
| import org.slf4j.Logger | ||
| import org.slf4j.LoggerFactory | ||
| import reactor.core.publisher.Flux | ||
| import reactor.kafka.sender.KafkaSender | ||
| import reactor.kafka.sender.SenderOptions | ||
| import reactor.kafka.sender.SenderRecord | ||
| import java.util.* | ||
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| class KafkaProducerMailet : GenericMailet() { | ||
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| private val logger: Logger = LoggerFactory.getLogger(KafkaProducerMailet::class.java) | ||
| private lateinit var bootstrapServer: String | ||
| private lateinit var topic: String | ||
| private lateinit var partitions: List<Int> | ||
| private var replication: Short = 0 | ||
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| override fun init() { | ||
| logger.info("${javaClass.simpleName} Initializing..") | ||
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| bootstrapServer = getInitParameter("bootstrapServer") | ||
| topic = getInitParameter("topicName") | ||
| partitions = (0..<getInitParameter("partitions").toInt()).toList() | ||
| replication = getInitParameter("replication").toShort() | ||
| val config = Properties().apply { | ||
| this[AdminClientConfig.BOOTSTRAP_SERVERS_CONFIG] = bootstrapServer | ||
| } | ||
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| AdminClient.create(config).use { admin -> | ||
| val topicNames = admin.listTopics().names().get() | ||
| if (topic !in topicNames) { | ||
| createTopic(admin) | ||
| } | ||
| } | ||
| } | ||
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| private fun createTopic(admin: AdminClient) { | ||
| val newTopic = NewTopic(topic, partitions.size, replication).configs(emptyMap()) | ||
| admin.createTopics(listOf(newTopic)).apply { | ||
| logger.info("Topic $topic not exists, created new") | ||
| } | ||
| } | ||
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| override fun service(mail: Mail?) { | ||
| mail?.let { | ||
| logger.info("Mail received: ${mail.message.messageID}") | ||
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| val senderOptions = SenderOptions.create<String, String>( | ||
| mapOf( | ||
| ProducerConfig.BOOTSTRAP_SERVERS_CONFIG to bootstrapServer, | ||
| ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG to StringSerializer::class.java, | ||
| ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG to StringSerializer::class.java | ||
| ) | ||
| ) | ||
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| KafkaSender.create(senderOptions).send(Flux.fromIterable(it.recipients) | ||
| .map { address -> | ||
| SenderRecord.create( | ||
| topic, | ||
| partitions.first(), | ||
| it.message.sentDate.time, | ||
| it.message.messageID, | ||
| address.asString(), | ||
| it.message.messageID | ||
| ) | ||
| } | ||
| ) | ||
| .doOnError { e: Any -> logger.info("Send message to Kafka failed: $e") } | ||
| .doOnNext { _: Any -> logger.info("Message sent to Kafka: " + it.message.messageID) } | ||
| .subscribe() | ||
| } | ||
| } | ||
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| override fun getMailetInfo(): String { | ||
| return "Disposable email Kafka producer mailet" | ||
| } | ||
| } |
49 changes: 49 additions & 0 deletions
49
...st/java/com/disposableemail/apache/james/mailet/producer/kafka/KafkaProducerMailetTest.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| package com.disposableemail.apache.james.mailet.producer.kafka | ||
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| import org.apache.james.core.MailAddress | ||
| import org.apache.mailet.base.test.FakeMail | ||
| import org.apache.mailet.base.test.FakeMailetConfig | ||
| import org.junit.jupiter.api.Assertions.* | ||
| import org.junit.jupiter.api.BeforeEach | ||
| import org.junit.jupiter.api.Disabled | ||
| import org.junit.jupiter.api.Test | ||
| import java.io.FileInputStream | ||
| import javax.mail.MessagingException | ||
| import javax.mail.internet.MimeMessage | ||
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| @Disabled | ||
| class KafkaProducerMailetTest { | ||
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| lateinit var mailetConfig: FakeMailetConfig | ||
| lateinit var mailet: KafkaProducerMailet | ||
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| @BeforeEach | ||
| @Throws(Exception::class) | ||
| fun setUp() { | ||
| mailetConfig = FakeMailetConfig.builder() | ||
| .mailetName("KafkaProducerMailet") | ||
| .setProperty("bootstrapServer", "localhost:9092") | ||
| .setProperty("topicName", "disposable-email-received") | ||
| .setProperty("partitions", "2") | ||
| .setProperty("replication", "1") | ||
| .build() | ||
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| mailet = KafkaProducerMailet() | ||
| mailet.init(mailetConfig) | ||
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| } | ||
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| @Test | ||
| @Throws(MessagingException::class) | ||
| fun mailetShouldNotCreateDocumentWhenMailIsEmpty() { | ||
| val mimeMessage = MimeMessage(null, FileInputStream("src/test/resources/test_mail_html_no_attachments.eml")) | ||
| val mail = FakeMail.defaultFakeMail() | ||
| mail.recipients.add(MailAddress("test@gmail.com")) | ||
| mail.recipients.add(MailAddress("test1@gmail.com")) | ||
| mail.message = mimeMessage | ||
| val mailet = KafkaProducerMailet() | ||
|
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| mailet.init() | ||
| mailet.service(mail) | ||
| } | ||
| } |
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