[keycloak-user] Support for transactional email providers like SendGrid, Mailgun or Mandrill

[Bruno Oliveira]

Maybe you can get some ideas from DefaultEmailSenderProvider[1]?

[1] - https://github.com/keycloak/keycloak/blob/master/services/src/main/java/org/keycloak/email/DefaultEmailSenderProvider.java

On 2016-07-25, Vineet Reynolds wrote:
> Hi everybody,
>
>     Has anyone managed to configure Keycloak 2.0.0.Final to use a
> transactional email API instead of configuring an SMTP server? I would
> prefer to have Keycloak send emails using a rest API like Sendgrid,
> Mandrill, Mailgun or Amazon SES (the cloud-native way) instead of running
> an SMTP server.
>
>    I'd also appreciate if this is possible through the SPI providers.
>
>    * Should I implement both EmailSenderProvider and EmailTemplateProvider
> SPIs ?
>    * I cannot get my custom EmailSenderProvider SPI implementation to work,
> as the FreemarkerEmailTemplateProvider implementation fails to obtain the
> implementation of the EmailSenderProvider. Stack trace is below
>
> 13:17:53,991 ERROR
> [org.keycloak.forms.login.freemarker.FreeMarkerLoginFormsProvider] (default
> task-39) Failed to send verification email:
> org.keycloak.email.EmailException: Failed to template email
> at
> org.keycloak.email.freemarker.FreeMarkerEmailTemplateProvider.send(FreeMarkerEmailTemplateProvider.java:179)
> at
> org.keycloak.email.freemarker.FreeMarkerEmailTemplateProvider.send(FreeMarkerEmailTemplateProvider.java:150)
> at
> org.keycloak.email.freemarker.FreeMarkerEmailTemplateProvider.sendVerifyEmail(FreeMarkerEmailTemplateProvider.java:146)
> at
> org.keycloak.forms.login.freemarker.FreeMarkerLoginFormsProvider.createResponse(FreeMarkerLoginFormsProvider.java:156)
> at
> org.keycloak.authentication.requiredactions.VerifyEmail.requiredActionChallenge(VerifyEmail.java:73)
> at
> org.keycloak.services.managers.AuthenticationManager.executionActions(AuthenticationManager.java:559)
> at
> org.keycloak.services.managers.AuthenticationManager.actionRequired(AuthenticationManager.java:490)
> at
> org.keycloak.services.managers.AuthenticationManager.nextActionAfterAuthentication(AuthenticationManager.java:412)
> at
> org.keycloak.services.resources.LoginActionsService$Checks.verifyRequiredAction(LoginActionsService.java:299)
> at
> org.keycloak.services.resources.LoginActionsService.processRequireAction(LoginActionsService.java:853)
> at
> org.keycloak.services.resources.LoginActionsService.requiredActionGET(LoginActionsService.java:846)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at
> org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:139)
> at
> org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget(ResourceMethodInvoker.java:295)
> at
> org.jboss.resteasy.core.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:249)
> at
> org.jboss.resteasy.core.ResourceLocatorInvoker.invokeOnTargetObject(ResourceLocatorInvoker.java:138)
> at
> org.jboss.resteasy.core.ResourceLocatorInvoker.invoke(ResourceLocatorInvoker.java:101)
> at
> org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:395)
> at
> org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:202)
> at
> org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:221)
> at
> org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56)
> at
> org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
> at
> io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85)
> at
> io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129)
> at
> org.keycloak.services.filters.KeycloakSessionServletFilter.doFilter(KeycloakSessionServletFilter.java:90)
> at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:60)
> at
> io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
> at
> io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84)
> at
> io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
> at
> io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
> at
> org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
> at
> io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
> at
> io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)
> at
> io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
> at
> io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
> at
> io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
> at
> io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
> at
> io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
> at
> io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
> at
> io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
> at
> io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
> at
> io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
> at
> org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
> at
> io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
> at
> io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
> at
> io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:284)
> at
> io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:263)
> at
> io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)
> at
> io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:174)
> at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)
> at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:793)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.NullPointerException
> at
> org.keycloak.email.freemarker.FreeMarkerEmailTemplateProvider.send(FreeMarkerEmailTemplateProvider.java:185)
> at
> org.keycloak.email.freemarker.FreeMarkerEmailTemplateProvider.send(FreeMarkerEmailTemplateProvider.java:177)
> ... 57 more
>
>
>
> Thanks,
> Vineet

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