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use crate::compiler;
use rand::{rngs::OsRng, RngCore};
use std::ffi::OsString;
use std::fmt;
use std::io::{self, Read};
use std::net::SocketAddr;
use std::path::{Path, PathBuf};
use std::process;
use std::str::FromStr;
#[cfg(feature = "dist-server")]
use std::sync::Mutex;
use crate::errors::*;
#[cfg(any(feature = "dist-client", feature = "dist-server"))]
mod cache;
#[cfg(feature = "dist-client")]
pub mod client_auth;
#[cfg(any(feature = "dist-client", feature = "dist-server"))]
pub mod http;
#[cfg(test)]
mod test;
#[cfg(any(feature = "dist-client", feature = "dist-server"))]
pub use crate::dist::cache::TcCache;
pub use self::path_transform::PathTransformer;
#[cfg(feature = "dist-client")]
pub mod pkg;
#[cfg(not(feature = "dist-client"))]
mod pkg {
pub trait ToolchainPackager {}
pub trait InputsPackager {}
}
#[cfg(target_os = "windows")]
mod path_transform {
use std::collections::HashMap;
use std::path::{Component, Components, Path, PathBuf, Prefix, PrefixComponent};
use std::str;
fn take_prefix<'a>(components: &'a mut Components<'_>) -> Option<PrefixComponent<'a>> {
let prefix = components.next()?;
let pc = match prefix {
Component::Prefix(pc) => pc,
_ => return None,
};
let root = components.next()?;
if root != Component::RootDir {
return None;
}
Some(pc)
}
fn transform_prefix_component(pc: PrefixComponent<'_>) -> Option<String> {
match pc.kind() {
Prefix::Disk(diskchar) | Prefix::VerbatimDisk(diskchar) => {
assert!(diskchar.is_ascii_alphabetic());
let diskchar = diskchar.to_ascii_uppercase();
Some(format!(
"/prefix/disk-{}",
str::from_utf8(&[diskchar]).expect("invalid disk char")
))
}
Prefix::Verbatim(_)
| Prefix::VerbatimUNC(_, _)
| Prefix::DeviceNS(_)
| Prefix::UNC(_, _) => None,
}
}
#[derive(Debug, Default)]
pub struct PathTransformer {
dist_to_local_path: HashMap<String, PathBuf>,
}
impl PathTransformer {
pub fn new() -> Self {
PathTransformer {
dist_to_local_path: HashMap::new(),
}
}
pub fn as_dist_abs(&mut self, p: &Path) -> Option<String> {
if !p.is_absolute() {
return None;
}
self.as_dist(p)
}
pub fn as_dist(&mut self, p: &Path) -> Option<String> {
let mut components = p.components();
let maybe_dist_prefix = if p.is_absolute() {
let pc =
take_prefix(&mut components).expect("could not take prefix from absolute path");
Some(transform_prefix_component(pc)?)
} else {
None
};
let mut dist_suffix = String::new();
for component in components {
let part = match component {
Component::Prefix(_) | Component::RootDir => {
error!("unexpected part in path {:?}", p);
return None;
}
Component::Normal(osstr) => osstr.to_str()?,
Component::CurDir => ".",
Component::ParentDir => "..",
};
if !dist_suffix.is_empty() {
dist_suffix.push('/')
}
dist_suffix.push_str(part)
}
let dist_path = if let Some(mut dist_prefix) = maybe_dist_prefix {
dist_prefix.push('/');
dist_prefix.push_str(&dist_suffix);
dist_prefix
} else {
dist_suffix
};
self.dist_to_local_path
.insert(dist_path.clone(), p.to_owned());
Some(dist_path)
}
pub fn disk_mappings(&self) -> impl Iterator<Item = (PathBuf, String)> {
let mut normal_mappings = HashMap::new();
let mut verbatim_mappings = HashMap::new();
for (_dist_path, local_path) in self.dist_to_local_path.iter() {
if !local_path.is_absolute() {
continue;
}
let mut components = local_path.components();
let local_prefix =
take_prefix(&mut components).expect("could not take prefix from absolute path");
let local_prefix_component = Component::Prefix(local_prefix);
let local_prefix_path: &Path = local_prefix_component.as_ref();
let mappings = if let Prefix::VerbatimDisk(_) = local_prefix.kind() {
&mut verbatim_mappings
} else {
&mut normal_mappings
};
if mappings.contains_key(local_prefix_path) {
continue;
}
let dist_prefix = transform_prefix_component(local_prefix)
.expect("prefix already in tracking map could not be transformed");
mappings.insert(local_prefix_path.to_owned(), dist_prefix);
}
normal_mappings.into_iter().chain(verbatim_mappings)
}
pub fn to_local(&self, p: &str) -> Option<PathBuf> {
self.dist_to_local_path.get(p).cloned()
}
}
#[test]
fn test_basic() {
let mut pt = PathTransformer::default();
assert_eq!(pt.as_dist(Path::new("C:/a")).unwrap(), "/prefix/disk-C/a");
assert_eq!(
pt.as_dist(Path::new(r#"C:\a\b.c"#)).unwrap(),
"/prefix/disk-C/a/b.c"
);
assert_eq!(
pt.as_dist(Path::new("X:/other.c")).unwrap(),
"/prefix/disk-X/other.c"
);
let mut disk_mappings: Vec<_> = pt.disk_mappings().collect();
disk_mappings.sort();
assert_eq!(
disk_mappings,
&[
(Path::new("C:").into(), "/prefix/disk-C".into()),
(Path::new("X:").into(), "/prefix/disk-X".into()),
]
);
assert_eq!(pt.to_local("/prefix/disk-C/a").unwrap(), Path::new("C:/a"));
assert_eq!(
pt.to_local("/prefix/disk-C/a/b.c").unwrap(),
Path::new("C:/a/b.c")
);
assert_eq!(
pt.to_local("/prefix/disk-X/other.c").unwrap(),
Path::new("X:/other.c")
);
}
#[test]
fn test_relative_paths() {
let mut pt = PathTransformer::default();
assert_eq!(pt.as_dist(Path::new("a/b")).unwrap(), "a/b");
assert_eq!(pt.as_dist(Path::new(r#"a\b"#)).unwrap(), "a/b");
assert_eq!(pt.to_local("a/b").unwrap(), Path::new("a/b"));
}
#[test]
fn test_verbatim_disks() {
let mut pt = PathTransformer::default();
assert_eq!(
pt.as_dist(Path::new("X:/other.c")).unwrap(),
"/prefix/disk-X/other.c"
);
pt.as_dist(Path::new(r#"\\?\X:\out\other.o"#));
assert_eq!(
pt.to_local("/prefix/disk-X/other.c").unwrap(),
Path::new("X:/other.c")
);
assert_eq!(
pt.to_local("/prefix/disk-X/out/other.o").unwrap(),
Path::new(r#"\\?\X:\out\other.o"#)
);
let disk_mappings: Vec<_> = pt.disk_mappings().collect();
assert_eq!(
disk_mappings,
&[
(Path::new("X:").into(), "/prefix/disk-X".into()),
(Path::new(r#"\\?\X:"#).into(), "/prefix/disk-X".into()),
]
);
}
#[test]
fn test_slash_directions() {
let mut pt = PathTransformer::default();
assert_eq!(pt.as_dist(Path::new("C:/a")).unwrap(), "/prefix/disk-C/a");
assert_eq!(pt.as_dist(Path::new("C:\\a")).unwrap(), "/prefix/disk-C/a");
assert_eq!(pt.to_local("/prefix/disk-C/a").unwrap(), Path::new("C:/a"));
assert_eq!(pt.disk_mappings().count(), 1);
}
}
#[cfg(unix)]
mod path_transform {
use std::iter;
use std::path::{Path, PathBuf};
#[derive(Debug, Default)]
pub struct PathTransformer;
impl PathTransformer {
pub fn as_dist_abs(&mut self, p: &Path) -> Option<String> {
if !p.is_absolute() {
return None;
}
self.as_dist(p)
}
pub fn as_dist(&mut self, p: &Path) -> Option<String> {
p.as_os_str().to_str().map(Into::into)
}
pub fn disk_mappings(&self) -> impl Iterator<Item = (PathBuf, String)> {
iter::empty()
}
pub fn to_local(&self, p: &str) -> Option<PathBuf> {
Some(PathBuf::from(p))
}
}
}
pub fn osstrings_to_strings(osstrings: &[OsString]) -> Option<Vec<String>> {
osstrings
.iter()
.map(|arg| arg.clone().into_string().ok())
.collect::<Option<_>>()
}
pub fn osstring_tuples_to_strings(
osstring_tuples: &[(OsString, OsString)],
) -> Option<Vec<(String, String)>> {
osstring_tuples
.iter()
.map(|(k, v)| Some((k.clone().into_string().ok()?, v.clone().into_string().ok()?)))
.collect::<Option<_>>()
}
pub fn try_compile_command_to_dist(command: compiler::CompileCommand) -> Option<CompileCommand> {
let compiler::CompileCommand {
executable,
arguments,
env_vars,
cwd,
} = command;
Some(CompileCommand {
executable: executable.into_os_string().into_string().ok()?,
arguments: arguments
.into_iter()
.map(|arg| arg.into_string().ok())
.collect::<Option<_>>()?,
env_vars: env_vars
.into_iter()
.map(|(k, v)| Some((k.into_string().ok()?, v.into_string().ok()?)))
.collect::<Option<_>>()?,
cwd: cwd.into_os_string().into_string().ok()?,
})
}
#[derive(Debug, Hash, Eq, PartialEq, Clone, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct Toolchain {
pub archive_id: String,
}
#[derive(Hash, Eq, PartialEq, Clone, Copy, Debug, Ord, PartialOrd, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct JobId(pub u64);
impl fmt::Display for JobId {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
self.0.fmt(f)
}
}
impl FromStr for JobId {
type Err = <u64 as FromStr>::Err;
fn from_str(s: &str) -> ::std::result::Result<Self, Self::Err> {
u64::from_str(s).map(JobId)
}
}
#[derive(Hash, Eq, PartialEq, Clone, Copy, Debug, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct ServerId(SocketAddr);
impl ServerId {
pub fn new(addr: SocketAddr) -> Self {
ServerId(addr)
}
pub fn addr(&self) -> SocketAddr {
self.0
}
}
impl FromStr for ServerId {
type Err = <SocketAddr as FromStr>::Err;
fn from_str(s: &str) -> ::std::result::Result<Self, Self::Err> {
SocketAddr::from_str(s).map(ServerId)
}
}
#[derive(Eq, PartialEq, Clone, Debug, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct ServerNonce(u64);
impl ServerNonce {
pub fn new() -> Self {
ServerNonce(OsRng.next_u64())
}
}
#[derive(Hash, Eq, PartialEq, Clone, Copy, Debug, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub enum JobState {
Pending,
Ready,
Started,
Complete,
}
impl fmt::Display for JobState {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
use self::JobState::*;
match *self {
Pending => "pending",
Ready => "ready",
Started => "started",
Complete => "complete",
}
.fmt(f)
}
}
#[derive(Clone, Debug, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct CompileCommand {
pub executable: String,
pub arguments: Vec<String>,
pub env_vars: Vec<(String, String)>,
pub cwd: String,
}
#[derive(Clone, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct ProcessOutput {
code: i32,
stdout: Vec<u8>,
stderr: Vec<u8>,
}
impl ProcessOutput {
#[cfg(unix)]
pub fn try_from(o: process::Output) -> Result<Self> {
let process::Output {
status,
stdout,
stderr,
} = o;
let code = match (status.code(), status.signal()) {
(Some(c), _) => c,
(None, Some(s)) => bail!("Process status {} terminated with signal {}", status, s),
(None, None) => bail!("Process status {} has no exit code or signal", status),
};
Ok(ProcessOutput {
code,
stdout,
stderr,
})
}
#[cfg(test)]
pub fn fake_output(code: i32, stdout: Vec<u8>, stderr: Vec<u8>) -> Self {
Self {
code,
stdout,
stderr,
}
}
}
#[cfg(unix)]
use std::os::unix::process::ExitStatusExt;
#[cfg(windows)]
use std::os::windows::process::ExitStatusExt;
#[cfg(unix)]
fn exit_status(code: i32) -> process::ExitStatus {
process::ExitStatus::from_raw(code)
}
#[cfg(windows)]
fn exit_status(code: i32) -> process::ExitStatus {
process::ExitStatus::from_raw(code as u32)
}
impl From<ProcessOutput> for process::Output {
fn from(o: ProcessOutput) -> Self {
process::Output {
status: exit_status(o.code),
stdout: o.stdout,
stderr: o.stderr,
}
}
}
#[derive(Clone, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct OutputData(Vec<u8>, u64);
impl OutputData {
#[cfg(any(feature = "dist-server", all(feature = "dist-client", test)))]
pub fn try_from_reader<R: Read>(r: R) -> io::Result<Self> {
use flate2::read::ZlibEncoder as ZlibReadEncoder;
use flate2::Compression;
let mut compressor = ZlibReadEncoder::new(r, Compression::fast());
let mut res = vec![];
io::copy(&mut compressor, &mut res)?;
Ok(OutputData(res, compressor.total_in()))
}
pub fn lens(&self) -> OutputDataLens {
OutputDataLens {
actual: self.1,
compressed: self.0.len() as u64,
}
}
#[cfg(feature = "dist-client")]
pub fn into_reader(self) -> impl Read {
use flate2::read::ZlibDecoder as ZlibReadDecoder;
ZlibReadDecoder::new(io::Cursor::new(self.0))
}
}
pub struct OutputDataLens {
pub actual: u64,
pub compressed: u64,
}
impl fmt::Display for OutputDataLens {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "Size: {}->{}", self.actual, self.compressed)
}
}
#[derive(Clone, Debug, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct JobAlloc {
pub auth: String,
pub job_id: JobId,
pub server_id: ServerId,
}
#[derive(Clone, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub enum AllocJobResult {
Success {
job_alloc: JobAlloc,
need_toolchain: bool,
},
Fail {
msg: String,
},
}
#[derive(Clone, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct AssignJobResult {
pub state: JobState,
pub need_toolchain: bool,
}
#[derive(Clone, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub enum UpdateJobStateResult {
Success,
Fail { msg: String },
}
#[derive(Clone, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct HeartbeatServerResult {
pub is_new: bool,
}
#[derive(Clone, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub enum RunJobResult {
JobNotFound,
Complete(JobComplete),
}
#[derive(Clone, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct JobComplete {
pub output: ProcessOutput,
pub outputs: Vec<(String, OutputData)>,
}
#[derive(Clone, Debug, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct SchedulerStatusResult {
pub num_servers: usize,
pub num_cpus: usize,
pub in_progress: usize,
}
#[derive(Clone, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub enum SubmitToolchainResult {
Success,
JobNotFound,
CannotCache,
}
pub struct BuildResult {
pub output: ProcessOutput,
pub outputs: Vec<(String, OutputData)>,
}
pub struct ToolchainReader<'a>(Box<dyn Read + 'a>);
impl<'a> Read for ToolchainReader<'a> {
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
self.0.read(buf)
}
}
pub struct InputsReader<'a>(Box<dyn Read + Send + 'a>);
impl<'a> Read for InputsReader<'a> {
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
self.0.read(buf)
}
}
#[cfg(feature = "dist-server")]
type ExtResult<T, E> = ::std::result::Result<T, E>;
#[cfg(feature = "dist-server")]
pub trait SchedulerOutgoing {
fn do_assign_job(
&self,
server_id: ServerId,
job_id: JobId,
tc: Toolchain,
auth: String,
) -> Result<AssignJobResult>;
}
#[cfg(feature = "dist-server")]
pub trait ServerOutgoing {
fn do_update_job_state(&self, job_id: JobId, state: JobState) -> Result<UpdateJobStateResult>;
}
#[cfg(feature = "dist-server")]
pub trait JobAuthorizer: Send {
fn generate_token(&self, job_id: JobId) -> Result<String>;
fn verify_token(&self, job_id: JobId, token: &str) -> Result<()>;
}
#[cfg(feature = "dist-server")]
pub trait SchedulerIncoming: Send + Sync {
fn handle_alloc_job(
&self,
requester: &dyn SchedulerOutgoing,
tc: Toolchain,
) -> ExtResult<AllocJobResult, Error>;
fn handle_heartbeat_server(
&self,
server_id: ServerId,
server_nonce: ServerNonce,
num_cpus: usize,
job_authorizer: Box<dyn JobAuthorizer>,
) -> ExtResult<HeartbeatServerResult, Error>;
fn handle_update_job_state(
&self,
job_id: JobId,
server_id: ServerId,
job_state: JobState,
) -> ExtResult<UpdateJobStateResult, Error>;
fn handle_status(&self) -> ExtResult<SchedulerStatusResult, Error>;
}
#[cfg(feature = "dist-server")]
pub trait ServerIncoming: Send + Sync {
fn handle_assign_job(&self, job_id: JobId, tc: Toolchain) -> ExtResult<AssignJobResult, Error>;
fn handle_submit_toolchain(
&self,
requester: &dyn ServerOutgoing,
job_id: JobId,
tc_rdr: ToolchainReader<'_>,
) -> ExtResult<SubmitToolchainResult, Error>;
fn handle_run_job(
&self,
requester: &dyn ServerOutgoing,
job_id: JobId,
command: CompileCommand,
outputs: Vec<String>,
inputs_rdr: InputsReader<'_>,
) -> ExtResult<RunJobResult, Error>;
}
#[cfg(feature = "dist-server")]
pub trait BuilderIncoming: Send + Sync {
fn run_build(
&self,
toolchain: Toolchain,
command: CompileCommand,
outputs: Vec<String>,
inputs_rdr: InputsReader<'_>,
cache: &Mutex<TcCache>,
) -> ExtResult<BuildResult, Error>;
}
#[async_trait]
pub trait Client: Send + Sync {
async fn do_alloc_job(&self, tc: Toolchain) -> Result<AllocJobResult>;
async fn do_get_status(&self) -> Result<SchedulerStatusResult>;
async fn do_submit_toolchain(
&self,
job_alloc: JobAlloc,
tc: Toolchain,
) -> Result<SubmitToolchainResult>;
async fn do_run_job(
&self,
job_alloc: JobAlloc,
command: CompileCommand,
outputs: Vec<String>,
inputs_packager: Box<dyn pkg::InputsPackager>,
) -> Result<(RunJobResult, PathTransformer)>;
async fn put_toolchain(
&self,
compiler_path: PathBuf,
weak_key: String,
toolchain_packager: Box<dyn pkg::ToolchainPackager>,
) -> Result<(Toolchain, Option<(String, PathBuf)>)>;
fn rewrite_includes_only(&self) -> bool;
fn get_custom_toolchain(&self, exe: &Path) -> Option<PathBuf>;
}