Trait HandlerContext 

pub trait HandlerContext: Send {
    // Required methods
    fn load_entity<'life0, 'life1, 'life2, 'async_trait>(
        &'life0 mut self,
        entity_type: &'life1 str,
        id: &'life2 str,
    ) -> Pin<Box<dyn Future<Output = Option<Entity>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait,
             'life2: 'async_trait;
    fn save_entity<'life0, 'life1, 'life2, 'async_trait>(
        &'life0 mut self,
        entity_type: &'life1 str,
        entity: &'life2 Entity,
    ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait,
             'life2: 'async_trait;
    fn entity_remove(
        &mut self,
        entity_type: &str,
        id: &str,
    ) -> Result<(), Error>;
    fn data_source_network(&self) -> String;
    fn data_source_context(&self) -> DataSourceContext;
    fn data_source_string_param(&self) -> String;
    fn data_source_create(
        &mut self,
        template: &str,
        params: &[String],
    ) -> Result<(), Error>;
    fn data_source_create_with_context(
        &mut self,
        template: &str,
        params: &[String],
        context: DataSourceContext,
    ) -> Result<(), Error>;
}

Required Methods

fn load_entity<'life0, 'life1, 'life2, 'async_trait>( &'life0 mut self, entity_type: &'life1 str, id: &'life2 str, ) -> Pin<Box<dyn Future<Output = Option<Entity>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

fn save_entity<'life0, 'life1, 'life2, 'async_trait>( &'life0 mut self, entity_type: &'life1 str, entity: &'life2 Entity, ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

fn entity_remove(&mut self, entity_type: &str, id: &str) -> Result<(), Error>

fn data_source_network(&self) -> String

Returns the current data source’s network name.

fn data_source_context(&self) -> DataSourceContext

Returns the current data source’s context (set via createWithContext). Returns an empty context if none was provided.

fn data_source_string_param(&self) -> String

Mirrors graph-ts dataSource.stringParam(). Returns the UTF-8 string interpretation of the datasource address/source bytes. For file/offchain datasources, this is the source identifier (e.g., content hash). For onchain templates, the result depends on how graph-node populates dataSource.address() — typically the hex-decoded contract address bytes interpreted as UTF-8, which may not produce a meaningful string.

fn data_source_create( &mut self, template: &str, params: &[String], ) -> Result<(), Error>

Create a dynamic data source from a template. params are template-specific: for onchain templates, typically [address_hex].

fn data_source_create_with_context( &mut self, template: &str, params: &[String], context: DataSourceContext, ) -> Result<(), Error>

Create a dynamic data source from a template with context. params are template-specific: for onchain templates, typically [address_hex].

Implementors