wasmcloud-provider-couchbase

This is a capability provider for wasmCloud to provide Couchbase KV connectivity to Wasm applications via wasi-keyvalue. At the moment it supports the wasi:keyvalue/store@0.2.0-draft interface.

This provider uses the RawJSONTranscoder for Couchbase, storing any new keys as binary data. Since the wasi-keyvalue interface works entirely in storing and retrieving binary data, the deserialization into a struct or structured data must be done on the component side.

Build

Prerequisites:

• wash 0.29 or later

Build this capability provider with:

wash build

Run

Prerequisites:

• wash 0.29 or later
• A built couchbase capability provider, see #build
• Setup Couchbase server with the required configuration for testing using docker-compose.yaml in the repo.

  docker-compose up -d
  

  Alternatively, you can use Quick Install guide with a bucket named test created.

wash up -d
wash app deploy ./wadm.yaml

Then you can test the increment functionality with cURL:

curl localhost:8080/couchbase

Test

To test the WIT bindings, download [wit-bindgen][wit-bindgen] and run the following:

wit-deps && wit-bindgen rust --out-dir /tmp/wit wit/

This will attempt to generate Rust based bindings, in a folder under /tmp (which will be cleaned up eventually), but in doing so, will check that the WIT definitions are valid (as they must be to complete binding generation).