Hi I have a system which pulls some data from different sources. All sources until today were sync so i designed the following API:

trait GraphPuller {
  pub fn Graph() -> Result<Vec<i64>>
}

struct GitPuller;
Struct TcpPuller;

impl GraphPuller for GitPuller {
  pub fn Graph() -> Result<Vec<i64>> {
  ...
  }
}

impl GraphPuller for Tc[Puller {
  pub fn Graph() -> Result<Vec<i64>> {
  ...
  }
}

Now I have to implement the Puller for AWS. AWS API is async, so i have to call async function in non sync system.

How Should I design the trait and api to avoid issues?

CodePudding user response：

The easiest way is to keep the trait the same and to just block on the Amazon API calls. I'd recommend pollster::block_on because it implements just the very minimum instead of pulling in the more heavyweight futures crate.