Add support the method sendMail(Config)

[wureka]

the Grails plugin org.grails.plugins:mail currently doesn't support multiple SMTP hosts.
However, there is someone who provides a work around way to reach this request (pls see http://www.stepwise.pl/blog/grails3-multiple-smtp-servers/.
I added the above work around way to asynchronous-mail and failed. the failed exception is as below:

`

2017-10-29 05:59:41.638 DEBUG EmailNotificationService.sendMailUsingPrimaryAccount() : Sending an email from primary account fetapp
2017-10-29 05:59:41.651 ERROR EventBus.accept() : No Session found for current thread

org.hibernate.HibernateException: No Session found for current thread
at org.grails.orm.hibernate.GrailsSessionContext.currentSession(GrailsSessionContext.java:116)
at org.hibernate.internal.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:688)
at org.grails.orm.hibernate.cfg.GrailsHibernateUtil.setObjectToReadWrite(GrailsHibernateUtil.java:325)
at org.grails.orm.hibernate.cfg.GrailsHibernateUtil$setObjectToReadWrite.call(Unknown Source)
at org.grails.orm.hibernate.HibernateGormInstanceApi.setObjectToReadWrite(HibernateGormInstanceApi.groovy:133)
at org.grails.orm.hibernate.AbstractHibernateGormInstanceApi.save(AbstractHibernateGormInstanceApi.groovy:136)
at org.grails.datastore.gorm.GormEntity$Trait$Helper.save(GormEntity.groovy:151)
at org.grails.datastore.gorm.GormEntity$Trait$Helper$save$9.call(Unknown Source)
at grails.plugin.asyncmail.AsynchronousMailMessage.save(AsynchronousMailMessage.groovy)
at grails.plugin.asyncmail.AsynchronousMailMessage.save(AsynchronousMailMessage.groovy)
at org.grails.datastore.gorm.GormEntity$save$0.call(Unknown Source)
at grails.plugin.asyncmail.AsynchronousMailPersistenceService.save(AsynchronousMailPersistenceService.groovy:12)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1432)
at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite$PogoCachedMethodSiteNoUnwrapNoCoerce.invoke(PogoMetaMethodSite.java:210)
at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite.call(PogoMetaMethodSite.java:71)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:133)
at grails.plugin.asyncmail.AsynchronousMailService.sendAsynchronousMail(AsynchronousMailService.groovy:46)
at grails.plugin.asyncmail.AsynchronousMailService$sendAsynchronousMail.callCurrent(Unknown Source)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:52)
at grails.plugin.asyncmail.AsynchronousMailService$sendAsynchronousMail.callCurrent(Unknown Source)
at grails.plugin.asyncmail.AsynchronousMailService.sendMail(AsynchronousMailService.groovy:70)
at grails.plugins.mail.SendMail$sendMail.call(Unknown Source)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:125)
at com.zebulun.service.EmailNotificationService$$EQZOAklP.sendMailUsingPrimaryAccount(EmailNotificationService.groovy:40)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springsource.loaded.ri.ReloadedTypeInvoker$2.invoke(ReloadedTypeInvoker.java:133)
at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1461)
at org.springframework.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:216)
at reactor.spring.context.config.ConsumerBeanAutoConfiguration$Invoker.apply(ConsumerBeanAutoConfiguration.java:351)
at reactor.spring.context.config.ConsumerBeanAutoConfiguration$ServiceConsumer.accept(ConsumerBeanAutoConfiguration.java:297)
at reactor.spring.context.config.ConsumerBeanAutoConfiguration$ServiceConsumer.accept(ConsumerBeanAutoConfiguration.java:284)
at reactor.bus.EventBus$3.accept(EventBus.java:317)
at reactor.bus.EventBus$3.accept(EventBus.java:310)
at reactor.bus.routing.ConsumerFilteringRouter.route(ConsumerFilteringRouter.java:72)
at reactor.bus.EventBus.accept(EventBus.java:591)
at reactor.bus.EventBus.accept(EventBus.java:63)
at reactor.core.dispatch.AbstractLifecycleDispatcher.route(AbstractLifecycleDispatcher.java:160)
at reactor.core.dispatch.MultiThreadDispatcher$MultiThreadTask.run(MultiThreadDispatcher.java:74)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)

Caused by: reactor.core.support.Exceptions$ValueCause: Exception while signaling value: reactor.bus.Event.class : Event{id=null, headers=null, replyTo=null, key=com.zebulun.mail.primary.mail, data=com.zebulun.mail.event.PrimaryMailAccountEvent@13ae6a2d}
at reactor.core.support.Exceptions.addValueAsLastCause(Exceptions.java:127)
at reactor.bus.routing.ConsumerFilteringRouter.route(ConsumerFilteringRouter.java:77)
... 7 common frames omitted
`
Then, I change my code as below:

`

@Selector('com.zebulun.mail.secondary.mail') 
def sendMailUsingSecondaryAccount(SecondaryMailAccountEvent event) {
    log.debug 'Sending an email from secondary account'
    Member.withTransaction{
        asyncMailService.sendMail(extendedMailConfig) {
            multipart true
            from extendedMailConfig.from
            to '[email protected]'
            subject 'Email from Secondary account fetapp'
            text "Hello Secondary Account"
            html '<h1> Hello Secondary Account</h1>'
        }
    }
}

`

And the error becomes as below:

`

No signature of method: grails.plugin.asyncmail.AsynchronousMailService.sendMail() is applicable for argument types: (org.grails.config.PropertySourcesConfig,  com.zebulun.service.EmailNotificationService$_sendMailUsingSecondaryAccount_closure2$_closure4) values: [[host:smtp.gmail.com, from:[email protected], port:465, username:[email protected], ...], ...]
Possible solutions: sendMail(groovy.lang.Closure), findAll()

`

After digging your code, I found AsynchronousMailService doesn't implement the method sendMail(Config)

Is it possible to add the above implementation into next release version?
Thanks.