mlua/examples/async_http_reqwest.rs
2021-06-19 14:41:48 +01:00

36 lines
1.1 KiB
Rust

use mlua::{chunk, ExternalResult, Lua, LuaSerdeExt, Result};
#[tokio::main]
async fn main() -> Result<()> {
let lua = Lua::new();
let null = lua.null();
let fetch_json = lua.create_async_function(|lua, uri: String| async move {
let resp = reqwest::get(&uri)
.await
.and_then(|resp| resp.error_for_status())
.to_lua_err()?;
let json = resp.json::<serde_json::Value>().await.to_lua_err()?;
lua.to_value(&json)
})?;
let f = lua
.load(chunk! {
function print_r(t, indent)
local indent = indent or ""
for k, v in pairs(t) do
io.write(indent, tostring(k))
if type(v) == "table" then io.write(":\n") print_r(v, indent.." ")
else io.write(": ", v == $null and "null" or tostring(v), "\n") end
end
end
local res = $fetch_json(...)
print_r(res)
})
.into_function()?;
f.call_async("https://httpbin.org/anything?arg0=val0").await
}