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|
use crate::RunningJob;
use rlua::prelude::*;
use std::sync::{Arc, Mutex};
use std::path::PathBuf;
pub const DEFAULT_RUST_GOODFILE: &'static [u8] = include_bytes!("../../config/goodfiles/rust.lua");
pub struct BuildEnv {
lua: Lua,
job: Arc<Mutex<RunningJob>>,
}
impl BuildEnv {
pub fn new(job: &Arc<Mutex<RunningJob>>) -> Self {
let env = BuildEnv {
lua: Lua::new(),
job: Arc::clone(job),
};
env.lua.context(|lua_ctx| {
env.define_env(lua_ctx)
}).expect("can define context");
env
}
fn define_env(&self, lua_ctx: LuaContext) -> Result<(), String> {
let hello = lua_ctx.create_function(|_, ()| {
eprintln!("hello from lua!!!");
Ok(())
})
.map_err(|e| format!("problem defining build function: {:?}", e))?;
let job_ref = Arc::clone(&self.job);
let build = lua_ctx.create_function(move |_, (command, params): (LuaValue, LuaValue)| {
let job_ref: Arc<Mutex<RunningJob>> = Arc::clone(&job_ref);
let args = match command {
LuaValue::Table(table) => {
let len = table.len().expect("command table has a length");
let mut command_args = Vec::new();
for i in 0..len {
let value = table.get(i + 1).expect("command arg is gettble");
match value {
LuaValue::String(s) => {
command_args.push(s.to_str().unwrap().to_owned());
},
other => {
return Err(LuaError::RuntimeError(format!("argument {} was not a string, was {:?}", i, other)));
}
};
}
command_args
},
other => {
return Err(LuaError::RuntimeError(format!("argument 1 was not a table: {:?}", other)));
}
};
#[derive(Debug)]
struct RunParams {
step: Option<String>,
name: Option<String>,
cwd: Option<String>,
}
let params = match params {
LuaValue::Table(table) => {
let step = match table.get("step").expect("can get from table") {
LuaValue::String(v) => {
Some(v.to_str()?.to_owned())
},
LuaValue::Nil => {
None
},
other => {
return Err(LuaError::RuntimeError(format!("params[\"step\"] must be a string")));
}
};
let name = match table.get("name").expect("can get from table") {
LuaValue::String(v) => {
Some(v.to_str()?.to_owned())
},
LuaValue::Nil => {
None
},
other => {
return Err(LuaError::RuntimeError(format!("params[\"name\"] must be a string")));
}
};
let cwd = match table.get("cwd").expect("can get from table") {
LuaValue::String(v) => {
Some(v.to_str()?.to_owned())
},
LuaValue::Nil => {
None
},
other => {
return Err(LuaError::RuntimeError(format!("params[\"cwd\"] must be a string")));
}
};
RunParams {
step,
name,
cwd,
}
},
other => {
return Err(LuaError::RuntimeError(format!("argument 2 was not a table: {:?}", other)));
}
};
eprintln!("args: {:?}", args);
let rt = tokio::runtime::Builder::new_current_thread()
.enable_all()
.build()
.unwrap();
rt.block_on(async move {
job_ref.lock().unwrap().run_command(&args, params.cwd.as_ref().map(|x| x.as_str())).await
.map_err(|e| LuaError::RuntimeError(format!("run_command error: {:?}", e)))
})
})
.map_err(|e| format!("problem defining build function: {:?}", e))?;
let job_ref = Arc::clone(&self.job);
let metric = lua_ctx.create_function(move |_, (name, value): (String, String)| {
let job_ref: Arc<Mutex<RunningJob>> = Arc::clone(&job_ref);
let rt = tokio::runtime::Builder::new_current_thread()
.enable_all()
.build()
.unwrap();
rt.block_on(async move {
job_ref.lock().unwrap().send_metric(&name, value).await
.map_err(|e| LuaError::RuntimeError(format!("send_metric error: {:?}", e)))
})
})
.map_err(|e| format!("problem defining metric function: {:?}", e))?;
let job_ref = Arc::clone(&self.job);
let artifact = lua_ctx.create_function(move |_, (path, name): (String, Option<String>)| {
let path: PathBuf = path.into();
let default_name: String = match (path.file_name(), path.parent()) {
(Some(name), _) => name
.to_str()
.ok_or(LuaError::RuntimeError("artifact name is not a unicode string".to_string()))?
.to_string(),
(_, Some(parent)) => format!("{}", parent.display()),
(None, None) => {
// one day using directories for artifacts might work but / is still not going
// to be accepted
return Err(LuaError::RuntimeError(format!("cannot infer a default path name for {}", path.display())));
}
};
let name: String = match name {
Some(name) => name,
None => default_name,
};
let job_ref: Arc<Mutex<RunningJob>> = Arc::clone(&job_ref);
let rt = tokio::runtime::Builder::new_current_thread()
.enable_all()
.build()
.unwrap();
rt.block_on(async move {
let artifact = job_ref.lock().unwrap().create_artifact(&name, &format!("{} (from {})", name, path.display())).await
.map_err(|e| LuaError::RuntimeError(format!("create_artifact error: {:?}", e)))
.unwrap();
crate::forward_data(tokio::fs::File::open(&format!("tmpdir/{}", path.display())).await.unwrap(), artifact).await
.map_err(|e| LuaError::RuntimeError(format!("failed uploading data for {}: {:?}", name, e)))
})
})
.map_err(|e| format!("problem defining metric function: {:?}", e))?;
let error = lua_ctx.create_function(move |_, msg: String| {
Err::<(), LuaError>(LuaError::RuntimeError(format!("explicit error: {}", msg)))
}).unwrap();
let path_has_cmd = lua_ctx.create_function(move |_, name: String| {
Ok(std::process::Command::new("which")
.arg(name)
.status()
.map_err(|e| LuaError::RuntimeError(format!("could not fork which? {:?}", e)))?
.success())
}).unwrap();
let size_of_file = lua_ctx.create_function(move |_, name: String| {
Ok(std::fs::metadata(&format!("tmpdir/{}", name))
.map_err(|e| LuaError::RuntimeError(format!("could not stat {:?}", name)))?
.len())
}).unwrap();
let build_environment = lua_ctx.create_table_from(
vec![
("has", path_has_cmd),
("size", size_of_file),
]
).unwrap();
let build_functions = lua_ctx.create_table_from(
vec![
("hello", hello),
("run", build),
("metric", metric),
("error", error),
("artifact", artifact),
]
).unwrap();
build_functions.set("environment", build_environment).unwrap();
let globals = lua_ctx.globals();
globals.set("Build", build_functions).unwrap();
Ok(())
}
pub async fn run_build(self, script: &[u8]) -> Result<(), LuaError> {
let script = script.to_vec();
let res: Result<(), LuaError> = std::thread::spawn(move || {
self.lua.context(|lua_ctx| {
lua_ctx.load(&script)
.set_name("goodfile")?
.exec()
})
}).join().unwrap();
eprintln!("lua res: {:?}", res);
res
}
}
|
