init plugins
This commit is contained in:
Bradley Nelson
Generated
+379
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@@ -0,0 +1,31 @@
|
||||
[package]
|
||||
name = "oxicloud-plugin-hello"
|
||||
version = "0.1.0"
|
||||
edition = "2021"
|
||||
description = "Example OxiCloud plugin (ABI v0) — the artifact the plugin-runtime acceptance test loads. Cargo features build the misbehaving variants used by the failure-isolation tests."
|
||||
publish = false
|
||||
|
||||
# Standalone workspace root: built only by scripts/build-plugin-hello.sh on the
|
||||
# wasm32 target, never by the server's `cargo test --workspace` / clippy.
|
||||
[workspace]
|
||||
|
||||
[lib]
|
||||
crate-type = ["cdylib"]
|
||||
|
||||
[dependencies]
|
||||
extism-pdk = "1"
|
||||
serde_json = "1"
|
||||
|
||||
[features]
|
||||
default = []
|
||||
# Misbehaving variants for the failure-isolation tests. Each builds a separate
|
||||
# fixture under tests/fixtures/plugins/ via the build script.
|
||||
panic = [] # `handle` panics -> host must contain the trap
|
||||
sleep = [] # `handle` busy-loops past the timeout
|
||||
net = [] # `handle` attempts an outbound HTTP call (denied: no allowed_hosts)
|
||||
wrong_abi = [] # `abi_version` returns 1 -> host must reject at load
|
||||
|
||||
[profile.release]
|
||||
opt-level = "s"
|
||||
lto = true
|
||||
strip = true
|
||||
@@ -0,0 +1,75 @@
|
||||
//! Example OxiCloud plugin — ABI v0 (M0 walking skeleton).
|
||||
//!
|
||||
//! The default build is the well-behaved "hello" plugin: it reads the
|
||||
//! `file.uploaded` event metadata, calls the host `log` function (the only
|
||||
//! authority a plugin has), and returns `{"ok": true}`.
|
||||
//!
|
||||
//! Cargo features select the misbehaving variants the host's failure-isolation
|
||||
//! tests load (`panic`, `sleep`, `net`, `wrong_abi`). See
|
||||
//! `scripts/build-plugin-hello.sh`.
|
||||
|
||||
use extism_pdk::*;
|
||||
|
||||
/// The one host function OxiCloud exposes, imported from its namespaced module.
|
||||
#[host_fn("oxicloud:host:v0")]
|
||||
extern "ExtismHost" {
|
||||
fn log(level: String, message: String);
|
||||
}
|
||||
|
||||
/// Required export: which ABI this plugin was built against. The host rejects
|
||||
/// the plugin at load if this does not equal its own `OXICLOUD_PLUGIN_ABI`.
|
||||
#[cfg(not(feature = "wrong_abi"))]
|
||||
#[plugin_fn]
|
||||
pub fn abi_version() -> FnResult<u32> {
|
||||
Ok(0)
|
||||
}
|
||||
|
||||
/// `wrong_abi` variant: claim an ABI the host does not speak.
|
||||
#[cfg(feature = "wrong_abi")]
|
||||
#[plugin_fn]
|
||||
pub fn abi_version() -> FnResult<u32> {
|
||||
Ok(1)
|
||||
}
|
||||
|
||||
/// Required export: the single event entry point.
|
||||
#[plugin_fn]
|
||||
pub fn handle(input: String) -> FnResult<String> {
|
||||
// --- misbehaving variants (compiled in only under their feature) ---------
|
||||
#[cfg(feature = "panic")]
|
||||
panic!("intentional panic: exercises host failure isolation");
|
||||
|
||||
#[cfg(feature = "sleep")]
|
||||
{
|
||||
// Busy-loop forever; the host's wall-clock timeout must cancel us.
|
||||
let mut spin: u64 = 0;
|
||||
loop {
|
||||
spin = spin.wrapping_add(1);
|
||||
std::hint::black_box(spin);
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(feature = "net")]
|
||||
{
|
||||
// Attempt an outbound HTTP call. The host grants no `allowed_hosts`, so
|
||||
// Extism denies this before any socket is opened (offline-deterministic)
|
||||
// and the error propagates out of `handle`.
|
||||
let req = HttpRequest::new("https://example.com/");
|
||||
let _ = http::request::<()>(&req, None)?;
|
||||
}
|
||||
|
||||
// --- well-behaved "hello" path ------------------------------------------
|
||||
let ev: serde_json::Value = serde_json::from_str(&input)?;
|
||||
let path = ev["payload"]["path"].as_str().unwrap_or("<unknown>");
|
||||
let size = ev["payload"]["size"].as_u64().unwrap_or(0);
|
||||
|
||||
// Prove plugin -> host: call the only authority we have.
|
||||
unsafe {
|
||||
log(
|
||||
"info".to_string(),
|
||||
format!("hello plugin saw upload: {path} ({size} bytes)"),
|
||||
)?;
|
||||
}
|
||||
|
||||
// Prove plugin -> host return path.
|
||||
Ok(serde_json::json!({ "ok": true }).to_string())
|
||||
}
|
||||
Reference in New Issue
Block a user