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-rw-r--r--ci-runner/src/lua/mod.rs411
1 files changed, 411 insertions, 0 deletions
diff --git a/ci-runner/src/lua/mod.rs b/ci-runner/src/lua/mod.rs
new file mode 100644
index 0000000..62ac68b
--- /dev/null
+++ b/ci-runner/src/lua/mod.rs
@@ -0,0 +1,411 @@
+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>>,
+}
+
+#[derive(Debug)]
+pub struct RunParams {
+ step: Option<String>,
+ name: Option<String>,
+ cwd: Option<String>,
+}
+
+pub struct CommandOutput {
+ pub exit_status: std::process::ExitStatus,
+ pub stdout: Vec<u8>,
+ pub stderr: Vec<u8>,
+}
+
+mod lua_exports {
+ use crate::RunningJob;
+ use crate::lua::{CommandOutput, RunParams};
+
+ use std::sync::{Arc, Mutex};
+ use std::path::PathBuf;
+
+ use rlua::prelude::*;
+
+ pub fn collect_build_args(command: LuaValue, params: LuaValue) -> Result<(Vec<String>, RunParams), rlua::Error> {
+ 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)));
+ }
+ };
+
+ 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,
+ }
+ },
+ LuaValue::Nil => {
+ RunParams {
+ step: None,
+ name: None,
+ cwd: None,
+ }
+ }
+ other => {
+ return Err(LuaError::RuntimeError(format!("argument 2 was not a table: {:?}", other)));
+ }
+ };
+
+ Ok((args, params))
+ }
+
+ pub fn build_command_impl(command: LuaValue, params: LuaValue, job_ctx: Arc<Mutex<RunningJob>>) -> Result<(), rlua::Error> {
+ let (args, params) = collect_build_args(command, params)?;
+ eprintln!("args: {:?}", args);
+ eprintln!(" params: {:?}", params);
+ let rt = tokio::runtime::Builder::new_current_thread()
+ .enable_all()
+ .build()
+ .unwrap();
+ rt.block_on(async move {
+ job_ctx.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)))
+ })
+ }
+
+ pub fn check_output_impl<'lua>(ctx: rlua::Context<'lua>, command: LuaValue<'lua>, params: LuaValue<'lua>, job_ctx: Arc<Mutex<RunningJob>>) -> Result<rlua::Table<'lua>, rlua::Error> {
+ let (args, params) = collect_build_args(command, params)?;
+ eprintln!("args: {:?}", args);
+ eprintln!(" params: {:?}", params);
+ let rt = tokio::runtime::Builder::new_current_thread()
+ .enable_all()
+ .build()
+ .unwrap();
+ let command_output = rt.block_on(async move {
+ job_ctx.lock().unwrap().run_with_output(&args, params.cwd.as_ref().map(|x| x.as_str())).await
+ .map_err(|e| LuaError::RuntimeError(format!("run_command error: {:?}", e)))
+ })?;
+
+ let stdout = ctx.create_string(command_output.stdout.as_slice())?;
+ let stderr = ctx.create_string(command_output.stderr.as_slice())?;
+
+ let result = ctx.create_table()?;
+ result.set("stdout", stdout)?;
+ result.set("stderr", stderr)?;
+ result.set("status", command_output.exit_status.code())?;
+ Ok(result)
+ }
+
+ pub fn check_dependencies(commands: Vec<String>) -> Result<(), rlua::Error> {
+ let mut missing_deps = Vec::new();
+ for command in commands.iter() {
+ if !has_cmd(command)? {
+ missing_deps.push(command.clone());
+ }
+ }
+
+ if missing_deps.len() > 0 {
+ return Err(LuaError::RuntimeError(format!("missing dependencies: {}", missing_deps.join(", "))));
+ }
+
+ Ok(())
+ }
+
+ pub fn metric(name: String, value: String, job_ctx: Arc<Mutex<RunningJob>>) -> Result<(), rlua::Error> {
+ let rt = tokio::runtime::Builder::new_current_thread()
+ .enable_all()
+ .build()
+ .unwrap();
+ rt.block_on(async move {
+ job_ctx.lock().unwrap().send_metric(&name, value).await
+ .map_err(|e| LuaError::RuntimeError(format!("send_metric error: {:?}", e)))
+ })
+ }
+
+ pub fn artifact(path: String, name: Option<String>, job_ctx: Arc<Mutex<RunningJob>>) -> Result<(), rlua::Error> {
+ 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 rt = tokio::runtime::Builder::new_current_thread()
+ .enable_all()
+ .build()
+ .unwrap();
+ rt.block_on(async move {
+ let mut artifact = job_ctx.lock().unwrap().create_artifact(&name, &format!("{} (from {})", name, path.display())).await
+ .map_err(|e| LuaError::RuntimeError(format!("create_artifact error: {:?}", e)))
+ .unwrap();
+ let mut file = tokio::fs::File::open(&format!("tmpdir/{}", path.display())).await.unwrap();
+ eprintln!("uploading...");
+ crate::io::forward_data(&mut file, &mut artifact).await
+ .map_err(|e| LuaError::RuntimeError(format!("failed uploading data for {}: {:?}", name, e)))?;
+ std::mem::drop(artifact);
+ Ok(())
+ })
+ }
+
+ pub fn has_cmd(name: &str) -> Result<bool, rlua::Error> {
+ Ok(std::process::Command::new("which")
+ .arg(name)
+ .status()
+ .map_err(|e| LuaError::RuntimeError(format!("could not fork which? {:?}", e)))?
+ .success())
+ }
+
+ pub fn file_size(path: &str) -> Result<u64, rlua::Error> {
+ Ok(std::fs::metadata(&format!("tmpdir/{}", path))
+ .map_err(|e| LuaError::RuntimeError(format!("could not stat {:?}", path)))?
+ .len())
+ }
+
+ pub mod step {
+ use crate::RunningJob;
+ use std::sync::{Arc, Mutex};
+
+ pub fn start(job_ref: Arc<Mutex<RunningJob>>, name: String) -> Result<(), rlua::Error> {
+ let mut job = job_ref.lock().unwrap();
+ job.current_step.clear();
+ job.current_step.push(name);
+ Ok(())
+ }
+
+ pub fn push(job_ref: Arc<Mutex<RunningJob>>, name: String) -> Result<(), rlua::Error> {
+ let mut job = job_ref.lock().unwrap();
+ job.current_step.push(name);
+ Ok(())
+ }
+
+ pub fn advance(job_ref: Arc<Mutex<RunningJob>>, name: String) -> Result<(), rlua::Error> {
+ let mut job = job_ref.lock().unwrap();
+ job.current_step.pop();
+ job.current_step.push(name);
+ Ok(())
+ }
+ }
+}
+
+struct DeclEnv<'lua, 'env> {
+ lua_ctx: &'env rlua::Context<'lua>,
+ job_ref: &'env Arc<Mutex<RunningJob>>,
+}
+impl<'lua, 'env> DeclEnv<'lua, 'env> {
+ fn create_function<A, R, F>(&self, name: &str, f: F) -> Result<rlua::Function<'lua>, String>
+ where
+ A: FromLuaMulti<'lua>,
+ R: ToLuaMulti<'lua>,
+ F: 'static + Send + Fn(rlua::Context<'lua>, Arc<Mutex<RunningJob>>, A) -> Result<R, rlua::Error> {
+
+ let job_ref = Arc::clone(self.job_ref);
+ self.lua_ctx.create_function(move |ctx, args| {
+ let job_ref = Arc::clone(&job_ref);
+ f(ctx, job_ref, args)
+ })
+ .map_err(|e| format!("problem defining {} function: {:?}", name, e))
+ }
+}
+
+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: rlua::Context) -> Result<(), String> {
+ let decl_env = DeclEnv {
+ lua_ctx: &lua_ctx,
+ job_ref: &self.job,
+ };
+
+ let hello = decl_env.create_function("hello", |_, _, ()| {
+ eprintln!("hello from lua!!!");
+ Ok(())
+ })?;
+
+ let check_dependencies = decl_env.create_function("dependencies", move |_, job_ref, commands: Vec<String>| {
+ lua_exports::check_dependencies(commands)
+ })?;
+
+ let build = decl_env.create_function("build", move |_, job_ref, (command, params): (LuaValue, LuaValue)| {
+ lua_exports::build_command_impl(command, params, job_ref)
+ })?;
+
+ let check_output = decl_env.create_function("check_output", move |ctx, job_ref, (command, params): (LuaValue, LuaValue)| {
+ lua_exports::check_output_impl(ctx, command, params, job_ref)
+ })?;
+
+ let metric = decl_env.create_function("metric", move |_, job_ref, (name, value): (String, String)| {
+ lua_exports::metric(name, value, job_ref)
+ })?;
+
+ let now_ms = decl_env.create_function("now_ms", move |_, job_ref, ()| Ok(ci_lib_core::now_ms()))?;
+
+ let artifact = decl_env.create_function("artifact", move |_, job_ref, (path, name): (String, Option<String>)| {
+ lua_exports::artifact(path, name, job_ref)
+ })?;
+
+ let error = decl_env.create_function("error", move |_, job_ref, msg: String| {
+ Err::<(), LuaError>(LuaError::RuntimeError(format!("explicit error: {}", msg)))
+ })?;
+
+ let path_has_cmd = decl_env.create_function("path_has_cmd", move |_, job_ref, name: String| {
+ lua_exports::has_cmd(&name)
+ })?;
+
+ let size_of_file = decl_env.create_function("size_of_file", move |_, job_ref, name: String| {
+ lua_exports::file_size(&name)
+ })?;
+
+ let native_rust_triple = match std::env::consts::ARCH {
+ "x86_64" => "x86_64-unknown-linux-gnu",
+ "aarch64" => "aarch64-unknown-linux-gnu",
+ other => { panic!("dunno native rust triple for arch {}", other); }
+ };
+ let native_rust_triple = lua_ctx.create_string(native_rust_triple).unwrap();
+ let build_env_vars = lua_ctx.create_table_from(
+ vec![
+ ("native_rust_triple", native_rust_triple)
+ ]
+ ).unwrap();
+
+ let build_environment = lua_ctx.create_table_from(
+ vec![
+ ("has", path_has_cmd),
+ ("size", size_of_file),
+ ]
+ ).unwrap();
+ build_environment.set("vars", build_env_vars).unwrap();
+
+ let build_functions = lua_ctx.create_table_from(
+ vec![
+ ("hello", hello),
+ ("run", build),
+ ("dependencies", check_dependencies),
+ ("metric", metric),
+ ("error", error),
+ ("artifact", artifact),
+ ("now_ms", now_ms),
+ ("check_output", check_output),
+ ]
+ ).unwrap();
+ build_functions.set("environment", build_environment).unwrap();
+ let current_commit = self.job.lock().unwrap().job.commit.clone();
+ build_functions.set("sha", lua_ctx.create_string(current_commit.as_bytes()).unwrap()).unwrap();
+ let globals = lua_ctx.globals();
+ globals.set("Build", build_functions).unwrap();
+
+
+ let step_start = decl_env.create_function("step_start", move |_, job_ref, name: String| {
+ lua_exports::step::start(job_ref, name)
+ })?;
+
+ let step_push = decl_env.create_function("step_push", move |_, job_ref, name: String| {
+ lua_exports::step::push(job_ref, name)
+ })?;
+
+ let step_advance = decl_env.create_function("step_advance", move |_, job_ref, name: String| {
+ lua_exports::step::advance(job_ref, name)
+ })?;
+
+ let step_functions = lua_ctx.create_table_from(
+ vec![
+ ("start", step_start),
+ ("push", step_push),
+ ("advance", step_advance),
+ ]
+ ).unwrap();
+ globals.set("Step", step_functions).unwrap();
+ Ok(())
+ }
+
+ pub async fn run_build(self, script: &[u8]) -> Result<(), LuaError> {
+ let script = script.to_vec();
+ let res: Result<(), LuaError> = tokio::task::spawn_blocking(|| {
+ std::thread::spawn(move || {
+ self.lua.context(|lua_ctx| {
+ lua_ctx.load(&script)
+ .set_name("goodfile")?
+ .exec()
+ })
+ }).join().unwrap()
+ }).await.unwrap();
+ eprintln!("lua res: {:?}", res);
+ res
+ }
+}