Struct GraphClient 

pub struct GraphClient<'a> { /* private fields */ }

Client for the Microsoft Graph API.

Provides Entra ID user lookups needed to distinguish internal users (“Member”) from external/guest users (“Guest”) in RBAC policy evaluation.

Implementations

impl<'a> GraphClient<'a>

pub async fn get_user(&self, principal_id: &str) -> Result<Option<GraphUser>>

Get a single user by their object ID (principal ID).

Returns None if the user is not found (404).

pub async fn list_service_principals( &self, filter: &str, ) -> Result<Vec<GraphServicePrincipal>>

List service principals matching an OData $filter expression.

Example: find the Databricks SCIM provisioning connector:

let results = graph
    .list_service_principals("displayName eq 'Azure Databricks SCIM Provisioning Connector'")
    .await?;

pub async fn batch_get_users( &self, principal_ids: &[&str], ) -> Result<HashMap<String, GraphUser>>

Batch-fetch multiple users by their object IDs.

Returns a map of principal_id → GraphUser for users that were found. Not-found (404) entries are silently omitted from the result.

Internally uses $batch to resolve up to 20 IDs per HTTP call, handling chunking automatically for larger sets.