Struct MessagingClientBuilder 

pub struct MessagingClientBuilder { /* private fields */ }

Builds a MessagingClient.

Implementations

impl MessagingClientBuilder

pub fn new(project_id: impl Into<String>) -> Self

Starts building a client for the given Firebase project id.

pub fn service_account_key(self, key: ServiceAccountKey) -> Self

Authenticates using an explicit service account key.

pub fn application_default_credentials(self) -> Self

Authenticates using Application Default Credentials, resolved on first use: the GOOGLE_APPLICATION_CREDENTIALS environment variable, gcloud user credentials, or the GCE/Cloud Run metadata server, in that order (see gcp_auth::provider).

pub fn enable_legacy_http_transport(self) -> Self

Opts MessagingClient::send_each/MessagingClient::send_each_for_multicast into HTTP/1.1 transport instead of multiplexing over HTTP/2 — mirrors Messaging.enableLegacyHttpTransport() in the official Admin SDKs. See MessagingClient::legacy_http_transport_enabled for why this is a no-op on this crate’s transport.

pub fn http_client(self, client: Client) -> Self

Supplies a custom reqwest::Client, e.g. for testing.

pub fn build(self) -> Result<MessagingClient, MessagingError>

Builds the MessagingClient.