Using WASI interfaces from Go
Golem implements and exports a subset of the WASI (opens in a new tab) interfaces, as well as its own runtime interfaces.
The Golem Go SDK provides idiomatic wrappers on a subset of these interfaces, and the Rust standard library is implemented on by another subset, but it is also possible to use the generated bindings directly.
WIT specifications
The full set of WIT specifications Golem implements is available in the following public repository:
https://github.com/golemcloud/golem-wit/tree/main/wit/deps (opens in a new tab)
The following table lists all packages provided by Golem:
| Package | Description |
|---|---|
golem:api | Golem's Runtime API |
golem:rpc | Provides support for Worker to Worker communication |
wasi:blobstore | Interface for storing and retrieving large binary data |
wasi:cli | Interface for environment variables and standard I/O |
wasi:clocks | Interface for querying the system time |
wasi:filesystem | Interface for working with files and directories |
wasi:http | Interface for making HTTP requests |
wasi:io | Interface for working with futures and streams |
wasi:keyvalue | Interface for storing and retrieving key-value pairs - only partially implemented |
wasi:logging | Interface for logging messages |
wasi:random | Interface for generating random numbers |
wasi:sockets | Interface for working with TCP and UDP sockets (currently not supporting durable execution) |
Bindings
It is possible to manually add these WIT specifications to a Rust component using cargo-component, but it is recommended to use the golem-rust and golem-wasm-rpc libraries instead.
golem-rustreexports all the bindings generated for the above listed interfacesgolem-wasm-rpccontains the bindings and the higher level implementation of thegolem:rpcinterface
Additional Golem runtime APIs
This section describes Golem-specific functionalities which are available through the Golem runtime API but does not have an idiomatic Rust wrapper in the golem-go library yet.