Enum SubscriptionKind

pub enum SubscriptionKind {
    NewHeads,
    Logs,
    NewPendingTransactions,
    Syncing,
}

Available on crate features eth and serde only.

Subscription kind.

Variants

NewHeads

New block headers subscription.

Fires a notification each time a new header is appended to the chain, including chain reorganizations. In case of a chain reorganization the subscription will emit all new headers for the new chain. Therefore the subscription can emit multiple headers on the same height.

Logs

Logs subscription.

Returns logs that are included in new imported blocks and match the given filter criteria. In case of a chain reorganization previous sent logs that are on the old chain will be resent with the removed property set to true. Logs from transactions that ended up in the new chain are emitted. Therefore, a subscription can emit logs for the same transaction multiple times.

NewPendingTransactions

New Pending Transactions subscription.

Returns the hash or full tx for all transactions that are added to the pending state and are signed with a key that is available in the node. When a transaction that was previously part of the canonical chain isn’t part of the new canonical chain after a reorganization its again emitted.

Syncing

Node syncing status subscription.

Indicates when the node starts or stops synchronizing. The result can either be a boolean indicating that the synchronization has started (true), finished (false) or an object with various progress indicators.

Trait Implementations

impl Clone for SubscriptionKind

fn clone(&self) -> SubscriptionKind

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SubscriptionKind

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SubscriptionKind

fn deserialize<__D>( __deserializer: __D, ) -> Result<SubscriptionKind, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for SubscriptionKind

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for SubscriptionKind

fn eq(&self, other: &SubscriptionKind) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for SubscriptionKind

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for SubscriptionKind

impl Eq for SubscriptionKind

impl StructuralPartialEq for SubscriptionKind