Email Whitelist Handling

[faenschi]

hi all

i have to extend my spring integration configuration with a email whitelist handling. emails should only be sent to receipients defined in a file. what's the best way or spring integration component to do that? later i also have to implement the same for sms, faxes and so on.

regards
angela

[Gary Russell]

You can use a custom filter...

public class MailFilter {

	public boolean filter(@Header(MailHeaders.TO) String mailTo) {
		return isInWhiteList(mailTo);
	}

	private boolean isInWhiteList(String mailTo) {
		...
	}
}

<int:filter input-channel="foo" output-channel="toMail">
	<bean class="foo.MailFilter" />
</int:filter>

[faenschi]

thanks for the answer!

i will try that...would it be also a good approach to implement one filter for all whitelist handling (email, fax, sms)? then reading the whitelists there and setting the new messageheaders?

something like that?


@

Named("outgoingMessageFilter")
public class OutgoingMessageFilter implements MessageSelector {

        /**
     * Implement a whitelist handling for all outgoing messages!
     * 
     * @see org.springframework.integration.core.MessageSelector#accept(org.springframework.integration.Message)
     */
    @Override
    public boolean accept(Message<?> message) {
        MessageHeaders headers = message.getHeaders();
        List<String> emailSubscribers = headers.get(CustomHeaders.EMAIL_SUBSCRIBERS, List.class);

        //handle and set new emails subscribers
        
        List<String> faxSubscribers = headers.get(CustomHeaders.FAX_SUBSCRIBERS, List.class);
        //handle and set new fax subscribers
        
        List<String> iphonePushSubscribers = headers.get(CustomHeaders.IPHONEPUSH_SUBSCRIBERS, List.class);
        //handle and set new iphone push subscribers
        
        return false;
    }
}

regards
angela

[Gary Russell]

That would work too, but you could avoid tying your code to the framework by using a POJO and a SpEL expression to pull the lists out of the headers; something like

<filter ... expression="@myPojoSelector.select(headers['mailSubs'], headers['faxSubs'], headers['iphonePushSubs'])" ... />