Struct sc_offchain::OffchainWorkerOptions

pub struct OffchainWorkerOptions<RA, Block: Block, Storage, CE> {
    pub runtime_api_provider: Arc<RA>,
    pub keystore: Option<KeystorePtr>,
    pub offchain_db: Option<Storage>,
    pub transaction_pool: Option<OffchainTransactionPoolFactory<Block>>,
    pub network_provider: Arc<dyn NetworkProvider + Send + Sync>,
    pub is_validator: bool,
    pub enable_http_requests: bool,
    pub custom_extensions: CE,
}

Options for OffchainWorkers

Fields

runtime_api_provider: Arc<RA>

Provides access to the runtime api.

keystore: Option<KeystorePtr>

Provides access to the keystore.

offchain_db: Option<Storage>

Provides access to the offchain database.

Use NoOffchainStorage as type when passing None to have some type that works.

transaction_pool: Option<OffchainTransactionPoolFactory<Block>>

Provides access to the transaction pool.

network_provider: Arc<dyn NetworkProvider + Send + Sync>

Provides access to network information.

is_validator: bool

Is the node running as validator?

enable_http_requests: bool

Enable http requests from offchain workers?

If not enabled, any http request will panic.

custom_extensions: CE

Callback to create custom Extensions that should be registered for the offchain_worker runtime call.

These Extensions are registered along-side the default extensions and are accessible in the host functions.

Example:

custom_extensions: |block_hash| {
    vec![MyCustomExtension::new()]
}