#wasi

app wacker-daemon

wacker daemon cli

9 releases (breaking)

0.9.0 May 23, 2024
0.8.0 May 10, 2024
0.7.0 Apr 26, 2024
0.6.0 Apr 23, 2024
0.2.1 Dec 20, 2023

#245 in WebAssembly

Apache-2.0

1MB
913 lines

wacker

Like Docker, but for WASM.

Installation

You can download binaries directly from the Releases page.

Or you can install it using cargo:

cargo install wacker-daemon
cargo install wacker-cli

Getting started

Start the wacker daemon:

$ wackerd
[2023-11-22 07:25:31 INFO wackerd] server listening on "/Users/user/.wacker/wacker.sock"

Run a WebAssembly program:

$ wacker run hello.wasm
$ wacker run time.wasm

Where hello.wasm is a simple WASM program that prints out Hello, world! and exits, and time.wasm is a long-running program that constantly prints out the current time.

You can find more WASI program examples at https://github.com/wacker-dev/wasi-examples.

Serve an HTTP WebAssembly program:

$ wacker serve hello_wasi_http.wasm --addr 127.0.0.1:8081

The path can be a local file path or a URL, eg:

$ wacker run https://raw.githubusercontent.com/wacker-dev/wacker/main/wacker/tests/wasm/hello.wasm

List running programs:

$ wacker list
ID                        PATH                   STATUS     ADDRESS
hello-w0AqXnf             hello.wasm             Finished
time-xhQVmjU              time.wasm              Running
hello_wasi_http-luf1vz6   hello_wasi_http.wasm   Running    127.0.0.1:8081

Fetch the logs:

$ wacker logs hello-w0AqXnf
Hello, world!

$ wacker logs -f --tail 5 time-xhQVmjU
current time: 2023-11-22 07:42:34
current time: 2023-11-22 07:42:35
current time: 2023-11-22 07:42:36
current time: 2023-11-22 07:42:37
current time: 2023-11-22 07:42:38

And you can also stop/restart/delete the program:

$ wacker stop time-xhQVmjU
$ wacker restart time-xhQVmjU
$ wacker delete/rm time-xhQVmjU

Usage for wacker cli:

$ wacker -h
wacker client

Usage: wacker <COMMAND>

Commands:
  run      Runs a WebAssembly program
  serve    Serves an HTTP WebAssembly program
  list     Lists running WebAssembly programs [aliases: ps]
  stop     Stops WebAssembly programs
  restart  Restarts WebAssembly programs
  delete   Deletes WebAssembly programs [aliases: rm]
  logs     Fetches logs of a program [aliases: log]
  help     Print this message or the help of the given subcommand(s)

Options:
  -h, --help     Print help
  -V, --version  Print version

Dependencies

~44–65MB
~1M SLoC