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Node

Trait Node 

Source
pub trait Node: Send + Sync {
    // Required methods
    fn id(&self) -> NodeId;
    fn name(&self) -> String;
    fn input_channels(&mut self) -> &mut InChannels;
    fn output_channels(&mut self) -> &mut OutChannels;
    fn run<'life0, 'async_trait>(
        &'life0 mut self,
        env: Arc<EnvVar>,
    ) -> Pin<Box<dyn Future<Output = Output> + Send + 'async_trait>>
       where 'life0: 'async_trait,
             Self: 'async_trait;

    // Provided methods
    fn is_condition(&self) -> bool { ... }
    fn loop_structure(&self) -> Option<Vec<Arc<Mutex<dyn Node>>>> { ... }
}
Expand description

§The Node trait

Nodes are the basic scheduling units of Graph. They can be identified by a globally assigned NodeId and a user-provided name.

Nodes can communicate with others asynchronously through InChannels and OutChannels.

In addition to the above properties, users can also customize some other attributes.

Required Methods§

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fn id(&self) -> NodeId

id is the unique identifier of each node, it will be assigned by the NodeTable when creating a new node, you can find this node through this identifier.

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fn name(&self) -> String

The node’s name.

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fn input_channels(&mut self) -> &mut InChannels

Input Channels of this node.

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fn output_channels(&mut self) -> &mut OutChannels

Output Channels of this node.

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fn run<'life0, 'async_trait>( &'life0 mut self, env: Arc<EnvVar>, ) -> Pin<Box<dyn Future<Output = Output> + Send + 'async_trait>>
where 'life0: 'async_trait, Self: 'async_trait,

Execute a run of this node.

Provided Methods§

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fn is_condition(&self) -> bool

Return true if this node is conditional node. By default, it returns false.

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fn loop_structure(&self) -> Option<Vec<Arc<Mutex<dyn Node>>>>

Returns the list of nodes that are part of this node’s loop structure, if any.

This method is used to identify nodes that are part of a loop-like structure, such as a loop subgraph. When this method returns Some(nodes), the loop detection check will skip checking these nodes for cycles.

Returns None by default, indicating this is not a loop-containing node.

Dyn Compatibility§

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors§