io.continual.iam.tags

Interface TagManager

All Known Subinterfaces:

IamDb<I,G>

All Known Implementing Classes:

CommonJsonDb, JsonDocDb

public interface TagManager

Tags are randomized strings that are used to generate text that would be improbable for attackers to guess. They're used for activities like user confirmation via email or password reset request handling.

Method Summary

Modifier and Type	Method and Description
String	createTag(String userId, String appTagType, long duration, TimeUnit durationTimeUnit, String nonce) Create a tag for a given user id with a particular type and duration.
String	getUserIdForTag(String tag) Retrieves the userId associated with a tag.
void	removeMatchingTag(String userId, String appTagType) Remove any matching tag for the given user and type.
void	sweepExpiredTags() Sweep any expired tags.

Method Detail

createTag

String createTag(String userId,
                 String appTagType,
                 long duration,
                 TimeUnit durationTimeUnit,
                 String nonce)
          throws IamSvcException

Create a tag for a given user id with a particular type and duration. If a tag for the same user with the same type exists, it's replaced with the new tag.

Parameters:

userId - a user ID

appTagType - a tag type

duration - the length of time the tag should exist

durationTimeUnit - the time unit for the duration

nonce - used to seed random number generator

Returns:

a tag

Throws:

IamSvcException - if there's a problem in the IAM service

getUserIdForTag

String getUserIdForTag(String tag)
                throws IamSvcException

Retrieves the userId associated with a tag. If the tag has expired, null is returned.

Parameters:

tag - a tag generated by createTag

Returns:

a user ID or null if no entry exists (or an entry existed but expired)

Throws:

IamSvcException - if there's a problem in the IAM service

removeMatchingTag

void removeMatchingTag(String userId,
                       String appTagType)
                throws IamSvcException

Remove any matching tag for the given user and type.

Parameters:

userId - a user ID

appTagType - a tag type

Throws:

IamSvcException - if there's a problem in the IAM service

sweepExpiredTags

void sweepExpiredTags()
               throws IamSvcException

Sweep any expired tags. The tag manager implementation may not actually require this operation. In that case, make it a no-op.

Throws:

IamSvcException - if there's a problem in the IAM service