Struct ockam::Any

source · []
pub struct Any;
Expand description

A passthrough marker message type.

This is a special message type which will enable your worker to accept any typed message, by ignoring the type information in the payload.

This is especially useful for implementing middleware workers which need access to the route information of a message, without understanding its payload.

Examples

use ockam::{hex, Any, Context, Result, Routed, Worker};

pub struct Logger;

#[ockam::worker]
impl Worker for Logger {
    type Context = Context;
    type Message = Any;

    /// This Worker will take any incoming message, print out the payload
    /// and then forward it to the next hop in its onward route.
    async fn handle_message(&mut self, ctx: &mut Context, msg: Routed<Any>) -> Result<()> {
        let mut local_msg = msg.into_local_message();
        let transport_msg = local_msg.transport_mut();
        transport_msg.onward_route.step()?;
        transport_msg.return_route.modify().prepend(ctx.address());

        let payload = transport_msg.payload.clone();

        if let Ok(str) = String::from_utf8(payload.clone()) {
            println!("Address: {}, Received string: {}", ctx.address(), str);
        } else {
            println!("Address: {}, Received binary: {}", ctx.address(), hex::encode(&payload));
        }

        ctx.forward(local_msg).await
    }
}

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Decode a slice.

Formats the value using the given formatter. Read more

Encode the type into an Encoded type.

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Try cloning a object and return an Err in case of failure.

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Should always be Self

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

Uses borrowed data to replace owned data, usually by cloning. Read more

Converts the given value to a String. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more