Real World WASI Components

on YouTube ↗32m

" summary

A concrete C2PA API implemented as a single WASI component compiles from the Rust C2PA crate to wasm32-wasi and actually runs as a web service in wasmCloud via wasi-http and as a CLI via wasi-cli, with generated JavaScript and Node bindings using jco The build uses file descriptors for seekable media streams, workarounds for callbacks by defining a separate serer world, and extra derives for serialization The demos show web, node and CLI flows that apply and verify manifests and cryptographic signing successfully

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" chapters (10)

1. 0:00Introduction to CAI
2. 2:16Why use components?
3. 3:22Steps for component creation
4. 6:12Defining interfaces
5. 10:06Implementing the API
6. 14:32Handling first-class functions
7. 16:55Implementation details
8. 18:25Dependent components and JCO
9. 21:32Live demo
10. 24:54Future and conclusion

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