Web API alternative for RetrieveSharedPrincipalsAndAccessRequest - dynamics-crm

Question

I am looking for a way to retrieve sharing permissions on specific entities.
Is there a way to do this via the web api?
I am aware of RetrieveSharedPrincipalsAndAccessRequest but since the rest of my tool relies only on the web api i would like to avoid using Organization Service completely.

Answer 1

This request is available in version 9.0 (Dynamics 365 july update)
I believe that your are using 8.x version. In such case this is not that simple but also doable. Simply create a custom Action:
https://msdn.microsoft.com/en-us/library/dn481600.aspx
Actions can be used from workflows, plugins and, what is most useful in this scenario, directly called from WebAPI:
https://msdn.microsoft.com/en-us/library/mt607600.aspx
So for example your call would look like that:
POST [Organization URI]/api/data/v8.2/new_RetrievePrincipalAccessAction HTTP/1.1
Accept: application/json
Content-Type: application/json; charset=utf-8
OData-MaxVersion: 4.0
OData-Version: 4.0
{
"ObjectId": 3,
"ObjectType": "account"
}
Now, you need to create a plugin and register it in Post-Operation of your action (actions generate a custom message that you can use to register plugins). For example:
https://community.dynamics.com/crm/b/magnetismsolutionscrmblog/archive/2017/09/18/how-to-trigger-plugins-on-custom-messages-using-actions-in-dynamics-365
In your plugin, you can of course call the RetrieveSharedPrincipalsAndAccessRequest using standard IOrganizationService and simply put the result in OutputParameters of an action. Most useful would be JSON string:
public void Execute(IServiceProvider serviceProvider)
{
var context = (IPluginExecutionContext)serviceProvider.GetService(typeof(IPluginExecutionContext));
//do the logic retrieve what you want
context.OutputParameters["result"] = someResultAsJsonString;
}
Your JS webAPI call will return
{
result: someResultAsJsonString
}
And you can do whatever you want with this in your JS code :)