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  1. Developers
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  3. Open Authorization API

OAA .NET SDK

Building blocks for your custom OAA integration

PreviousCustom HRIS ProviderNextC# OAA Application Connector

Last updated 7 months ago

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You can download the Veza C# SDK from .

The Veza package provides data models, methods, and helpers for using the . It provides helper methods to populate OAA templates for custom applications, filesystems, HRIS systems, and identity providers, and push the payloads to Veza. The SDK can also be used as a generic Veza API client.

The Veza SDK includes the following core components:

  • Veza.Sdk.Client: A base API client for making REST calls to a Veza tenant

  • Veza.OAA.Client: An OAA API client for interacting with integration providers, data sources, and pushing OAA metadata to a Veza tenant.

For example usage, see C# OAA Application Connector.

Sample Workflow

Create the Veza API connection and a new custom application:

using Veza.OAA;
using Veza.OAA.Application;
using Veza.OAA.Base;

// inside namespace/class
            OAAClient oaaClient = new(api_key: <your_api_key>, url: <veza_tenant_url>);
            CustomApplication customApp = new(name: "sample app",
                applicationType: "sample", description: "This is a sample application");

Once the CustomApplication class is instantiated, you can use its public methods to populate the new app with users, groups, resources, and permissions metadata:

            // add custom permissions
            customApp.AddCustomPermission(name: "Admin", permissions: new List<Permission>
                {
                    Permission.DataRead,
                    Permission.DataWrite,
                    Permission.MetadataRead,
                    Permission.MetadataWrite,
                    Permission.NonData
                },
                applyToSubResources: true
            );

            // define custom user properties
            customApp.DefinedProperties[typeof(User)].DefineProperty("is_guest", typeof(bool));

            // add user
            User user = customApp.AddUser(name: "bob");
            user.AddIdentity("bob@example.com");
            user.IsActive = true;
            user.CreatedAt = "2001-01-01T00:00:00.000Z".FromRFC3339();
            user.DeactivatedAt = "2003-03-01T00:00:00.000Z".FromRFC3339();
            user.LastLoginAt = "2002-02-01T00:00:00.000Z".FromRFC3339();
            user.PasswordLastChangedAt = "2004-04-01T00:00:00.000Z".FromRFC3339();
            user.SetProperty(name: "is_guest", value: false);

            // define group properties
            customApp.DefinedProperties[typeof(Group)].DefineProperty("group_id", typeof(int));

            // add group
            Group group1 = customApp.AddGroup("group1");
            group1.CreatedAt = "2001-01-01T00:00:00.000Z".FromRFC3339();
            group1.SetProperty(name: "group_id", 1);
            customApp.Users["bob"].AddGroup("group1");
            Group group2 = customApp.AddGroup("group2");
            group2.AddGroup("group1");

            // idp identities
            customApp.AddIdPIdentity("user01@example.com");

            // define role properties
            customApp.DefinedProperties[typeof(Role)].DefineProperty("custom", typeof(bool));

            // add roles
            Role role1 = customApp.AddRole(name: "role1", permissions: new List<string> { "all", "Admin", "Manage_Thing" });
            role1.SetProperty(name: "custom", value: false);

            // define resource properties
            customApp.DefineResourceProperty("private", typeof(bool), "thing");

            // add resources
            Resource thing1 = customApp.AddResource(name: "thing1", resourceType: "thing", description: "thing1");
            thing1.SetProperty(name: "private", false);
            thing1.AddTag(name: "tag1", value: "This is a value @,-_.");
            Resource cog1 = thing1.AddSubResource(name: "cog1", resourceType: "cog");
            cog1.AddConnection(id: "service_account@some-project.iam.gserviceaccount.com", nodeType: "GoogleCloudServiceAccount");

            // authorizations
            customApp.Users["bob"].AddRole(name: "role1", applyToApplication: true);
            customApp.Groups["group2"].AddRole(name: "role1", resources: new List<Resource> { thing1 });
            customApp.IdPIdentities["user01@example.com"].AddRole(name: "role1", applyToApplication: true);

            return customApp;

Once all identities, permissions, and resources are added to the CustomApplication object, use the client connection to push the data to Veza:

    await oaaClient.CreateProvider(provider_name: "sample app", custom_template: "application");
    await oaaClient.PushApplication(provider_name: "sample app", data_source_name: "sample app 1", customApp);

Handling Errors

The Veza.OAA namespace provides exception types for common errors that occur when interacting with Veza APIs.

  • An OAAClientException is raised if there are errors interacting with the Veza API.

  • A TemplateException is raised if a provided payload does not conform to the template requirements. The inner exception will contain details about the exact issues encountered.

Additional Documentation

Each OAA connector will be slightly different, depending on the methods each source application or service provides for retrieving entities, authorization, and other required metadata. You should consult the API documentation for your application when considering how you will source the information, and refer to existing Veza-supported OAA connectors for real-world examples.

  • OAA connector source code and Veza components are thoroughly annotated for reference when building your own integrations.

See the directory for full examples.

For additional information about developing a custom OAA integration, please see section of the User Guide.

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