Server Get Character Entity

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alexmerza asked Apr 30, '18

Server Get Character Entity

I have just started looking into entities and I'm trying to figure out the best way of going about this.

Currently, a player is able to save and load level information to a local file, problem is we need this file to be available for the headless server to load. We wanted to push the data to the specific Character entity that invokes the save method.

As far as I can tell, the entity system relies on an entity token that you pass forward with the login credentials. When a player logs in though, they login with the client API. The server API doesn't have access to more than just the Player ID's that are currently logged in.

How do we go about requesting an entity of a particular character in game from the server?

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Answer 1 · 2018-12-22T04:30:17Z

brendan answered Dec 22, '18

Aha! Okay, upon review, this is actually much simpler than originally stated, so I'll enter this as the correct answer. What you should do in the case of a server is to have the server only act as a Title Entity. So, call GetEntityToken with no body, so that you get the Title Entity token, and then use that in the X-EntityToken header in order to make the Entity API call you need. The key thing to note is that the Entity ID you're querying does need to be sent to the server, so that it can provide that in the call.

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claytoniousmojo commented · Dec 22, 2018 at 01:41 PM

Well, I'll be darned - that did, indeed work. From the C# SDK from the server, I'm now just doing this:

awaitPlayFabAuthenticationAPI.GetEntityTokenAsync(newGetEntityTokenRequest())

(so it's an empty GetEntityTokenRequest) and that works. I can then follow it successfully with a call to PlayFabDataAPI.GetFilesAsync() with a filled in EntityKey. But this makes me wonder: what kind of internal state is the C# SDK storing in order for this to work? And what are the ramifications of that since I'm doing this on a server where many different clients might be running requests concurrently?

Thanks for this updated info!

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brendan claytoniousmojo commented · Dec 24, 2018 at 10:40 AM

The number of players isn't really important. The server is authenticating as the title in the entity calls, which is why they'll work regardless - that's specifically how the SDK code is set up.

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Answer 2 · 2018-05-02T01:48:51Z

brendan answered May 2, '18

[Edit: Ignore this - there was some confusion around token usage when this was originally posted]

You should be able to simply get the EntityToken for the character using GetEntityToken, if your policy is set correctly. No login credentials are needed, since you'd be making this call from a server (and so, using a Secret Key). Are you running into any issues with that process and, if so, what are the details?

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alexmerza commented · May 02, 2018 at 11:14 PM

Well, I suppose the problem lies with the policy being set properly. I get access denied when attempting to GetEntityToken(). Since by default all requests are denied, what permission needs to be set into effect?

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brendan alexmerza commented · May 08, 2018 at 12:26 AM

Apologies for the delay - we're working on a full tutorial for Entity Policies which we hope to have posted this week. But the default Entity policies actually enable what you describe - read/write of the Character Entity Objects/Files by the player who owns the Character (but not by any other player), and read/write by a server. What are the details of the API call as you're making it, and what is the specific response you get back?

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alexmerza brendan commented · May 08, 2018 at 04:07 PM

Sure thing, this is the request:

Request: {
    "Entity":
    {
        "Id": "F2B0E2AE82371914",
        "TypeString": "character"
    }
}<br>

and this is the response:

Response : {"code":403,"status":"Forbidden","error":"NotAuthorized","errorCode":1089,"errorMessage":"The claim was not allowed to perform the requested action based on the entity's access policy. Policy comment: By default, all requests are denied. If you expected this request to succeed, you may be missing a policy. See the permissions APIs in P
layFab's Admin Api to add a permission.","errorDetails":{}}
<br>

The request was passed to the GetEntityToken() function.

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alexmerza commented · May 07, 2018 at 04:11 PM

Still waiting for a reply on this.

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claytoniousmojo commented · Dec 22, 2018 at 02:34 AM

Having the same problem here: "The claim was not allowed to perform the requested action based on the entity's access policy". How do we configure this to allow accessing of entities from our servers?

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Server Get Character Entity

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