// Use Execution State to compute policy actions
/// <summary>
/// Constructor for Action class. Pass in AppInfo to simplify passing settings to AuthDelegate.
/// </summary>
/// <param name="appInfo"></param>
public Action(ApplicationInfo appInfo)
{
this.appInfo = appInfo;
// Initialize AuthDelegateImplementation using AppInfo.
authDelegate = new AuthDelegateImplementation(this.appInfo);
// Initialize SDK DLLs. If DLLs are missing or wrong type, this will throw an exception
MIP.Initialize(MipComponent.Policy);
// This method in AuthDelegateImplementation triggers auth against Graph so that we can get the user ID.
var id = authDelegate.GetUserIdentity();
// Create profile.
profile = CreatePolicyProfile(appInfo, ref authDelegate);
// Create engine providing Identity from authDelegate to assist with service discovery.
engine = CreatePolicyEngine(id);
}
/// <summary>
/// Creates a file engine, associating the engine with the specified identity.
/// File engines are generally created per-user in an application.
/// IFileEngine implements all operations for fetching labels and sensitivity types.
/// IFileHandlers are added to engines to perform labeling operations.
/// </summary>
/// <param name="identity"></param>
/// <returns></returns>
private IPolicyEngine CreatePolicyEngine(Identity identity)
{
// If the profile hasn't been created, do that first.
if (profile == null)
{
profile = CreatePolicyProfile(appInfo, ref authDelegate);
}
// Create file settings object. Passing in empty string for the first parameter, engine ID, will cause the SDK to generate a GUID.
// Locale settings are supported and should be provided based on the machine locale, particular for client applications.
var engineSettings = new PolicyEngineSettings("", "", "en-US")
{
// Provide the identity for service discovery.
Identity = identity
};
// Add the IFileEngine to the profile and return.
var engine = Task.Run(async() => await profile.AddEngineAsync(engineSettings)).Result;
return(engine);
}
