Struct Event

pub struct Event {
    pub stream_id: StreamId,
    pub index: u32,
    pub value: Vec<u8>,
}

An event recorded in a block.

Fields

stream_id: StreamId

The ID of the stream this event belongs to.

index: u32

The event index, i.e. the number of events in the stream before this one.

value: Vec<u8>

The payload data.

Implementations

impl Event

pub async fn stream_id( &self, ctx: &ContextBase<'_, &Positioned<Field>>, ) -> Result<&StreamId, Error>

pub async fn index( &self, ctx: &ContextBase<'_, &Positioned<Field>>, ) -> Result<&u32, Error>

pub async fn value( &self, ctx: &ContextBase<'_, &Positioned<Field>>, ) -> Result<&Vec<u8>, Error>

impl Event

pub fn id(&self, chain_id: ChainId) -> EventId

Returns the ID of this event record, given the publisher chain ID.

Trait Implementations

impl Clone for Event

fn clone(&self) -> Event

Returns a copy of the value.

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

Performs copy-assignment from source.

impl ContainerType for Event

async fn resolve_field( &self, ctx: &ContextBase<'_, &Positioned<Field>>, ) -> Result<Option<ConstValue>, ServerError>

Resolves a field value and outputs it as a json value async_graphql::Value.

fn collect_all_fields<'a>( &'a self, ctx: &ContextBase<'a, &'a Positioned<SelectionSet>>, fields: &mut Fields<'a>, ) -> Result<(), ServerError>

where Self: Send + Sync,

Collect all the fields of the container that are queried in the selection set.

fn find_entity( &self, _: &ContextBase<'_, &Positioned<Field>>, _params: &ConstValue, ) -> impl Future<Output = Result<Option<ConstValue>, ServerError>> + Send

Find the GraphQL entity with the given name from the parameter.

impl Debug for Event

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Event

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for Event

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 OutputType for Event

fn type_name() -> Cow<'static, str>

Type the name.

fn create_type_info(registry: &mut Registry) -> String

Create type information in the registry and return qualified typename.

async fn resolve( &self, ctx: &ContextBase<'_, &Positioned<SelectionSet>>, _field: &Positioned<Field>, ) -> Result<ConstValue, ServerError>

Resolve an output value to async_graphql::Value.

fn qualified_type_name() -> String

Qualified typename.

fn introspection_type_name(&self) -> Cow<'static, str>

Introspection type name

impl PartialEq for Event

fn eq(&self, other: &Event) -> 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 Event

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 BcsHashable<'_> for Event

impl Eq for Event

impl ObjectType for Event

impl StructuralPartialEq for Event