Code Samples: Message ID

At first have to extend "grails.plugin.mail.MailService" as follows:


class MyMailService extends MailService

MyMailService would be like:

package com.pkm.services.mail

import grails.plugin.mail.MailMessageBuilder
import grails.plugin.mail.MailService
import org.springframework.mail.MailMessage
import org.springframework.mail.javamail.MimeMessageHelper

class MyMailService extends MailService {
    MailMessage sendMail(Closure callable) {
        if (isDisabled()) {
            throw new Exception("Sending emails disabled by configuration option")
            return null
        }

        MailMessageBuilder messageBuilder = mailMessageBuilderFactory.createBuilder(mailConfig)
        messageBuilder.multipart(true)

        /* Sending some custom headers with this email */
        Map<String, String> v = new HashMap<String,String>()
        v.put("header_1", "Header_1")
        v.put("header_2", "Header_2")
        messageBuilder.headers(v)

        callable.delegate = messageBuilder
        callable.resolveStrategy = Closure.DELEGATE_FIRST
        callable.call(messageBuilder)

        MailMessage mailMessage = messageBuilder.sendMessage(mailExecutorService)

        /* Reading unique message ID */
        MimeMessageHelper mimeMessageHelper = messageBuilder.getProperty("helper")
        String messageID = mimeMessageHelper.mimeMessage.getHeader("Message-ID").toString().trim()
        /* Now you can do your stuff with messageID */

        return mailMessage
    }
}


Use below code snippet to send mail


myMailService.sendMail() {
    mailSender.host = "host.mail.com"
    mailSender.javaMailProperties.put("mail.smtp.auth", "true")
    mailSender.username = "pritomkucse@gmail.com"
    mailSender.password = "xxxxxxxxx"
    mailSender.port = 569

    multipart true

    from "Pritom<pritomkucse@gmail.com>"
    to
    replyTo
    cc
    bcc
    subject
    text
    html
    attachBytes "some.name" "file_type" fileBytes
}


You need to add following dependency to BuildConfig.groovy as follows:


grails.project.dependency.resolution = {
    // inherit Grails' default dependencies
    inherits("global") {
        // specify dependency exclusions here; for example, uncomment this to disable ehcache:
        // excludes 'ehcache'
    }
    log "error" // log level of Ivy resolver, either 'error', 'warn', 'info', 'debug' or 'verbose'
    checksums true // Whether to verify checksums on resolve
    legacyResolve false // whether to do a secondary resolve on plugin installation, not advised and here for backwards compatibility

    repositories {
        inherits true // Whether to inherit repository definitions from plugins

        grailsPlugins()
        grailsHome()
        mavenLocal()
        grailsCentral()
        mavenCentral()
        // uncomment these (or add new ones) to enable remote dependency resolution from public Maven repositories
        //mavenRepo "http://repository.codehaus.org"
        //mavenRepo "http://download.java.net/maven/2/"
        //mavenRepo "http://repository.jboss.com/maven2/"
    }

    dependencies {
        // specify dependencies here under either 'build', 'compile', 'runtime', 'test' or 'provided' scopes e.g.
        // runtime 'mysql:mysql-connector-java:5.1.29'
        // runtime 'org.postgresql:postgresql:9.3-1101-jdbc41'
        test "org.grails:grails-datastore-test-support:1.0.2-grails-2.4"
        compile "org.springframework:spring-orm:$springVersion"
        runtime 'mysql:mysql-connector-java:5.1.29'
    }

    plugins {
        // plugins for the build system only
        build ":tomcat:7.0.55"

        // plugins for the compile step
        compile ":scaffolding:2.1.2"
        compile ':cache:1.1.8'
        compile ":asset-pipeline:1.9.9"
        compile ":mail:1.0.5"

        // plugins needed at runtime but not for compilation
        runtime ":hibernate4:4.3.6.1" // or ":hibernate:3.6.10.18"
        runtime ":database-migration:1.4.0"
        runtime ":jquery:1.11.1"

        // Uncomment these to enable additional asset-pipeline capabilities
        //compile ":sass-asset-pipeline:1.9.0"
        //compile ":less-asset-pipeline:1.10.0"
        //compile ":coffee-asset-pipeline:1.8.0"
        //compile ":handlebars-asset-pipeline:1.3.0.3"
    }
}
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Monday, November 7, 2016

Grails send email using grails.plugin.mail.MailService and track unique message ID
