Files
herolib_rust/packages/system/virt/src/rhai/qcow2.rs
2025-08-20 14:44:29 +02:00

139 lines
4.4 KiB
Rust

use crate::qcow2;
use crate::qcow2::{BuildBaseResult, Qcow2Error, Qcow2Snapshot};
use rhai::{Array, Dynamic, Engine, EvalAltResult, Map};
use serde_json::Value;
// Convert Qcow2Error to Rhai error
fn qcow2_error_to_rhai<T>(result: Result<T, Qcow2Error>) -> Result<T, Box<EvalAltResult>> {
result.map_err(|e| {
Box::new(EvalAltResult::ErrorRuntime(
format!("qcow2 error: {}", e).into(),
rhai::Position::NONE,
))
})
}
// Convert serde_json::Value to Rhai Dynamic recursively (maps, arrays, scalars)
fn json_to_dynamic(v: &Value) -> Dynamic {
match v {
Value::Null => Dynamic::UNIT,
Value::Bool(b) => (*b).into(),
Value::Number(n) => {
if let Some(i) = n.as_i64() {
i.into()
} else {
// Avoid float dependency differences; fall back to string
n.to_string().into()
}
}
Value::String(s) => s.clone().into(),
Value::Array(arr) => {
let mut a = Array::new();
for item in arr {
a.push(json_to_dynamic(item));
}
a.into()
}
Value::Object(obj) => {
let mut m = Map::new();
for (k, val) in obj {
m.insert(k.into(), json_to_dynamic(val));
}
m.into()
}
}
}
// Wrappers exposed to Rhai
pub fn qcow2_create(path: &str, size_gb: i64) -> Result<String, Box<EvalAltResult>> {
qcow2_error_to_rhai(qcow2::create(path, size_gb))
}
pub fn qcow2_info(path: &str) -> Result<Dynamic, Box<EvalAltResult>> {
let v = qcow2_error_to_rhai(qcow2::info(path))?;
Ok(json_to_dynamic(&v))
}
pub fn qcow2_snapshot_create(path: &str, name: &str) -> Result<(), Box<EvalAltResult>> {
qcow2_error_to_rhai(qcow2::snapshot_create(path, name))
}
pub fn qcow2_snapshot_delete(path: &str, name: &str) -> Result<(), Box<EvalAltResult>> {
qcow2_error_to_rhai(qcow2::snapshot_delete(path, name))
}
pub fn qcow2_snapshot_list(path: &str) -> Result<Array, Box<EvalAltResult>> {
let snaps = qcow2_error_to_rhai(qcow2::snapshot_list(path))?;
let mut arr = Array::new();
for s in snaps {
arr.push(snapshot_to_map(&s).into());
}
Ok(arr)
}
fn snapshot_to_map(s: &Qcow2Snapshot) -> Map {
let mut m = Map::new();
if let Some(id) = &s.id {
m.insert("id".into(), id.clone().into());
} else {
m.insert("id".into(), Dynamic::UNIT);
}
if let Some(name) = &s.name {
m.insert("name".into(), name.clone().into());
} else {
m.insert("name".into(), Dynamic::UNIT);
}
if let Some(v) = s.vm_state_size {
m.insert("vm_state_size".into(), v.into());
} else {
m.insert("vm_state_size".into(), Dynamic::UNIT);
}
if let Some(v) = s.date_sec {
m.insert("date_sec".into(), v.into());
} else {
m.insert("date_sec".into(), Dynamic::UNIT);
}
if let Some(v) = s.date_nsec {
m.insert("date_nsec".into(), v.into());
} else {
m.insert("date_nsec".into(), Dynamic::UNIT);
}
if let Some(v) = s.vm_clock_nsec {
m.insert("vm_clock_nsec".into(), v.into());
} else {
m.insert("vm_clock_nsec".into(), Dynamic::UNIT);
}
m
}
pub fn qcow2_build_ubuntu_24_04_base(
dest_dir: &str,
size_gb: i64,
) -> Result<Map, Box<EvalAltResult>> {
// size_gb: pass None if <=0
let size_opt = if size_gb > 0 { Some(size_gb) } else { None };
let r: BuildBaseResult = qcow2_error_to_rhai(qcow2::build_ubuntu_24_04_base(dest_dir, size_opt))?;
let mut m = Map::new();
m.insert("base_image_path".into(), r.base_image_path.into());
m.insert("snapshot".into(), r.snapshot.into());
m.insert("url".into(), r.url.into());
if let Some(sz) = r.resized_to_gb {
m.insert("resized_to_gb".into(), sz.into());
} else {
m.insert("resized_to_gb".into(), Dynamic::UNIT);
}
Ok(m)
}
// Module registration
pub fn register_qcow2_module(engine: &mut Engine) -> Result<(), Box<EvalAltResult>> {
engine.register_fn("qcow2_create", qcow2_create);
engine.register_fn("qcow2_info", qcow2_info);
engine.register_fn("qcow2_snapshot_create", qcow2_snapshot_create);
engine.register_fn("qcow2_snapshot_delete", qcow2_snapshot_delete);
engine.register_fn("qcow2_snapshot_list", qcow2_snapshot_list);
engine.register_fn("qcow2_build_ubuntu_24_04_base", qcow2_build_ubuntu_24_04_base);
Ok(())
}