wasi-module-sdk-go/examples/hello_world_go/module/hello_world.go

package module

//go:generate go run -mod=mod github.com/mailru/easyjson/easyjson -all hello_world.go

import (
	sdk "code.icb4dc0.de/buildr/wasi-module-sdk-go"
	"golang.org/x/exp/slog"
)

var _ sdk.Module = (*HelloWorld)(nil)

type HelloWorld struct {
	Name string
}

func (h HelloWorld) Execute(ctx sdk.ExecutionContext) error {
	logger := ctx.Logger()

	logger.Info("Executing hello world")

	val, _, err := ctx.GetState(ctx, "hello")
	if err != nil {
		return err
	}

	if err := ctx.SetState(ctx, "state", []byte(`{"hello":"world"}`)); err != nil {
		return err
	}

	logger.Info("Got value from state", slog.String("value", string(val)))

	return nil
}

func (HelloWorld) Category() sdk.Category {
	return sdk.CategoryTask
}

func (HelloWorld) Type() string {
	return "hello_world"
}