containerd-shim-wasm 0.5.0

Library for building containerd shims for wasm
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38

use anyhow::bail;

use crate::container::{Engine, RuntimeContext, Stdio};
use crate::sys::container::instance::Instance;
use crate::testing::WasiTest;

#[derive(Clone, Default)]
struct EngineFailingValidation;

impl Engine for EngineFailingValidation {
    fn name() -> &'static str {
        "wasi_instance"
    }
    fn can_handle(&self, _ctx: &impl RuntimeContext) -> anyhow::Result<()> {
        bail!("can't handle");
    }
    fn run_wasi(&self, _ctx: &impl RuntimeContext, _stdio: Stdio) -> anyhow::Result<i32> {
        Ok(0)
    }
}

type InstanceFailingValidation = Instance<EngineFailingValidation>;

#[test]
#[cfg(unix)] // not yet implemented on Windows
fn test_validation_error() -> anyhow::Result<()> {
    // A validation error should fail when creating the container
    // as opposed to failing when starting it.

    let result = WasiTest::<InstanceFailingValidation>::builder()?
        .with_start_fn("foo")?
        .with_wasm("/invalid_entrypoint.wasm")?
        .build();

    assert!(result.is_err());

    Ok(())
}