April 6, 2011 at 9:45 PM
One of the wishes for additional functionality in FIM I’ve had since ILM2 has been custom Sync Rule Functions and except for adding a feature request to Connect that got a lot of votes (and was closed with “Won’t Fix) I blogged about it here.
The reason I want preferably custom and more OOB functions is simply the available functions are way too limited and much too often you’ll have to fall back on MA Extensions or creating custom workflows/activities where the Function Evaluator can’t help.
I’ve discussed this with a member of the product team and he claims that even though there is a public Sync Service interface allowing for this and a FIM Service system resource type (Function) this has never been a plan, instead this has just been a way of implementing the current functions that remains in the Functionlibrary.dll that is hardcoded to both the FIM service and the Sync Service.
Since I’m not a person that takes no as an answer I did a little survey that I addressed my MVP friends and some other FIM initiated friends (and their friends within Microsoft) giving them my ideas for new OOB functions since I’ve got the hint that custom functions are far away from being a reality and asked them to suggest functions they would like to see in FIM in a not too far future.
Even though the hint I got and communicated in the survey that custom functions are far away and instead asked for ideas for OOB functions they wished almost everyone said that custom and reusable functions is the only way to satisfy our demands, here are some of the comments …
- Quite frankly I don't see how they could ever satisfy all the requirements we could come up with. Allowing us to add functions is the only logical solution.
- Please allow an extension to provide our own custom functions - this was also suggested during the summit. And while we're at it, please allow the same extension to be used for relationship criteria.
- Could not agree more :), it's what's missing.. I can't stand sync rules.... this would help with the pain...
- However, I totally agree that custom functions are the only way to satisfy all our requirements, including those that we can't think of right now but that we will have to face some day. In this way, no matter how many more functions we get, we won't be able to use only codeless provisioning.
As you can see above, there’s also a demand for allowing functions in the Sync Rule relationship and I totally agree, as it is now it could be hard to get usable “joins” when having similar but not perfectly equal values for joining on!
Except for custom functions there’s a demand for more OOB functions that could be used by those who isn’t considering themselves developers. Some of the ideas were so similar that I took the freedom to join them. I got an answer with code examples where I choose not to include the code for readability and I hope it is clear enough anyway.
Issue a .Delete on the MV Attribute to clear out unwanted or orphaned data due to removal of flow rules
Cast the string to an integer, useful when you have to change an integer based anchor into a string to contribute elsewhere but need to provision it out
- GetBitOperator(int bitmask, mask)
Returns true/false of whether or not a bit is active in the mask
- ConvertGeneralTimeToISO8601(string generalizedtime)
Converts a flat string date
- ConvertFileTimeToISO8601(datetime filetime)
Converts a FileTime attribute to a format the FIM WS can accept
- GeneratePassword(number length)
Generate complex password from some predefined character group.
- GeneratePassword(number length, string chargroup1)
Generate complex password using characters from chargroup1.
- GeneratePassword(number length, string chargroup1, string chargroup2)
Generate complex password using characters from chargroup1 and chargroup2.
- GeneratePassword(number length, string chargroup1, string chargroup2, string chargroup3)
Generate complex password using characters from chargroup1 and chargroup2 and chargroup3.
- AddDays(Now(), 15)
- AddMonths(Now(), 6)
- Len (string value)
Function that returns the length of a string, 0 if null or empty.
- ToString (any type value)
Function that converts any datatype to string.
(it’s so irritating trying to map an integer value to a string during inbound sync, for example to employeeID and you get an error)
- Split (string value, string separators)
Function that splits a string into a multi-valued string.
- Join (string multi-valued value, optional string separator)
Function that joins a multi-valued string value into a single-valued value with an optional separator string.
- Index (any type multivalued value, number index)
Function that returns a single value of the same datatype as the multi-valued input value by index.
- Add (any type multivalued value, any type single-valued value to add)
Function that adds a single-valued value to a multi-valued value of the same type (one use could be for handling object classes in LDAP directories)
- Remove(any type multivalued value, any type single-valued value to remove)
Function that removes a single-valued value from a multi-valued value of the same type.
- RegexReplace(string value, string pattern, string replace)
Function that does a string replace using a regex pattern.
- StartsWith(string value, string startswith)
Function useful for finding out if a string starts with a specific string when doing IIF’s.
Could maybe be solved using the already available Mid function but this is easier.
- EndsWith(string value, string endswith)
Function useful for finding out if a string ends with a specific string when doing IIF’s.
Could maybe be solved using the already available Mid function but this is easier.
- IsValid(string value, string pattern)
Function for validating an input value using a regex pattern when doing IIF’s
- Format(string format, string value1, string value2, string value3… )
Function that replaces the format item in a specified string with the string representation of a corresponding string in a specified parameter. I just love this function on the .Net string object and I think it could be really useful even thought I understand it could be hard implementing a user interface for and since the FIM functions can’t accept arbitrary number of parameters.
Function that returns the current date and time.
- Normalize(string value)
Function for normalizing characters like ÅÖÄÜ etc. and removing all kinds of diacritics when for example creating email addresses. I’m told this could be done using the EscapeDNComponent function but that’s only available for outbound sync rules.
- Word (string value, number index, string separators)
This already available function doesn’t allow you to use an attribute as value only a fixed string.
I’m not the only one asking for this functionality but in order to make a change we need to get votes for it on Connect therefore I’ve made a new request that you can find here:
Go ahead and vote for it but don’t forget to make a comment why you wish to be able to create custom functions that can be reused and have a larger set of OOB functions. Also don’t be afraid inviting you friends to vote and publish this or the connect feature request on any social media!
January 7, 2010 at 12:45 AM
I’m currently working with Markus Vilcinskas on a couple of FIM Experts articles on how to detect non-authoritative accounts. Today we published the first two parts were the second part also contains an in depth description on how object state detection works. Enjoy!
October 16, 2009 at 8:25 AM
I’ve had a long discussion with Markus Vilcinskas on the FIM Forum on a thread started by Carol Wapshere maybe better known as MissMiis on the subject ”Selective provisioning to FIM”.
Carol wanted a way of bringing only a subset of users into the FIM AppStore and I really understand why, the reasons could be to save money on CAL’s - 30.000 users * 25$ = 750.000$, or maybe you already have perfectly working legacy sync rules.
Think before you try to do this, the best practice is that AppStore is should be a mirror of the Metaverse except of course for the resource types that live exclusively in the AppStore.
My first idea was it could be fairly simple to filter out users from the AppStore by the filter you could find in the declarative input sync rule but that was not a good idea at all, if you have 32.000 resources and you filter out 30.000 of these all of the filtered resources will be hit during sync since they're disconnectors. This is bad!
I also must admit I had a silly belief that the “Create Resource in FIM” checkbox, unchecked would project resources into the Metaverse and I was all wrong and for that I’ve promised to wear a silly hat all day.
So how should it be done then?
The best practice is to bring all your objects into AppStore but you could bring objects you don’t want to manage in the AppStore as separate object types into Metaverse using legacy rules but remember you won’t get the management of unique identifiers and group management might become a nightmare so think before you plan on not bringing all your objects into AppStore!