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Custom context #458
Description
I am trying to create custom context that gets reused between invocations.
Here specifically trying to reuse mongodb client.
// ...initing mongo database
let custom_context = CustomContext {
mongo_database: Some(mongo_database),
};
lambda_runtime::run(handler_fn(|event: Request, ctx: Context| {
execute(event, ctx, &custom_context)
}))
Getting: Closure may outlive the current function, but it borrows custom_context, which is owned by the current function
Can handler_fn be used to support something like this?
Activity
calavera commentedon Apr 3, 2022
Yes, See this example that shares custom resources: https://github.com/awslabs/aws-lambda-rust-runtime/blob/main/lambda-http/examples/shared-resources-example.rs
Your current code is bumping into Rust borrowing challenges. There is a good explanation on how it works here: https://blog.logrocket.com/introducing-the-rust-borrow-checker/