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mod model;
pub use model::*;
use assert_cmd::output::OutputOkExt;
use bstr::ByteSlice;
use eyre::WrapErr;
impl Dag {
pub fn load(path: &std::path::Path) -> eyre::Result<Self> {
let data = std::fs::read_to_string(path)
.wrap_err_with(|| format!("Could not read {}", path.display()))?;
let mut dag: Self = match path.extension().and_then(std::ffi::OsStr::to_str) {
Some("yaml") | Some("yml") => serde_yaml::from_str(&data)
.wrap_err_with(|| format!("Could not parse {}", path.display()))?,
Some("json") => serde_json::from_str(&data)
.wrap_err_with(|| format!("Could not parse {}", path.display()))?,
Some("toml") => toml::from_str(&data)
.wrap_err_with(|| format!("Could not parse {}", path.display()))?,
Some(other) => {
return Err(eyre::eyre!("Unknown extension: {:?}", other));
}
None => {
return Err(eyre::eyre!("No extension for {}", path.display()));
}
};
dag.import_root = Some(
path.parent()
.unwrap_or_else(|| std::path::Path::new(""))
.to_owned(),
);
Ok(dag)
}
pub fn save(&self, path: &std::path::Path) -> eyre::Result<()> {
let raw: String = match path.extension().and_then(std::ffi::OsStr::to_str) {
Some("yaml") | Some("yml") => serde_yaml::to_string(self)
.wrap_err_with(|| format!("Could not parse {}", path.display()))?,
Some("json") => serde_json::to_string(self)
.wrap_err_with(|| format!("Could not parse {}", path.display()))?,
Some("toml") => toml::to_string(self)
.wrap_err_with(|| format!("Could not parse {}", path.display()))?,
Some(other) => {
return Err(eyre::eyre!("Unknown extension: {:?}", other));
}
None => {
return Err(eyre::eyre!("No extension for {}", path.display()));
}
};
std::fs::write(path, &raw)
.wrap_err_with(|| format!("Could not write {}", path.display()))?;
Ok(())
}
pub fn run(self, cwd: &std::path::Path) -> eyre::Result<()> {
if self.init {
std::process::Command::new("git")
.arg("init")
.current_dir(cwd)
.ok()
.wrap_err("'git init' failed")?;
}
let mut marks: std::collections::HashMap<String, String> = Default::default();
self.run_events(
&self.events,
cwd,
self.import_root
.as_deref()
.unwrap_or_else(|| std::path::Path::new("")),
&mut marks,
)?;
Ok(())
}
fn run_events(
&self,
events: &[Event],
cwd: &std::path::Path,
import_root: &std::path::Path,
marks: &mut std::collections::HashMap<String, String>,
) -> eyre::Result<()> {
for event in events.iter() {
match event {
Event::Import(path) => {
let path = import_root.join(path);
let mut child_dag = Dag::load(&path)?;
child_dag.init = false;
child_dag.sleep = child_dag.sleep.or(self.sleep);
child_dag.run(cwd).wrap_err_with(|| {
format!("Failed when running imported fixcture {}", path.display())
})?;
}
Event::Tree(tree) => {
let output = std::process::Command::new("git")
.arg("ls-files")
.current_dir(cwd)
.ok()?;
for relpath in output.stdout.lines() {
let relpath = std::path::Path::new(relpath.to_os_str()?);
std::process::Command::new("git")
.arg("rm")
.arg("-f")
.arg(relpath)
.current_dir(cwd)
.ok()
.wrap_err_with(|| format!("Failed to remove {}", relpath.display()))?;
}
for (relpath, content) in tree.tracked.iter() {
let path = cwd.join(relpath);
if let Some(parent) = path.parent() {
std::fs::create_dir_all(parent).wrap_err_with(|| {
format!("Failed to create {}", parent.display())
})?;
}
std::fs::write(&path, content.as_bytes())
.wrap_err_with(|| format!("Failed to write {}", path.display()))?;
if !tree.state.is_tracked() {
std::process::Command::new("git")
.arg("add")
.arg(relpath)
.current_dir(cwd)
.ok()?;
}
}
if tree.state.is_committed() {
if let Ok(pre_commit) = current_oid(cwd) {
checkout(cwd, &pre_commit)?;
}
let mut p = std::process::Command::new("git");
p.arg("commit")
.arg("-m")
.arg(tree.message.as_deref().unwrap_or("Automated"))
.current_dir(cwd);
if let Some(author) = tree.author.as_deref() {
p.arg("--author").arg(author);
}
p.ok()?;
if let Some(sleep) = self.sleep {
std::thread::sleep(sleep);
}
if let Some(branch) = tree.branch.as_ref() {
let _ = std::process::Command::new("git")
.arg("branch")
.arg("-D")
.arg(branch.as_str())
.current_dir(cwd)
.ok();
std::process::Command::new("git")
.arg("checkout")
.arg("-b")
.arg(branch.as_str())
.current_dir(cwd)
.ok()?;
}
if let Some(mark) = tree.mark.as_ref() {
let commit = current_oid(cwd)?;
marks.insert(mark.as_str().to_owned(), commit);
}
}
}
Event::Children(events) => {
let start_commit = current_oid(cwd)?;
for run in events {
checkout(cwd, &start_commit)?;
self.run_events(run, cwd, import_root, marks)?;
}
}
Event::Head(reference) => {
let revspec = match &reference {
Reference::Mark(mark) => marks
.get(mark.as_str())
.ok_or_else(|| eyre::eyre!("Reference doesn't exist: {:?}", mark))?
.as_str(),
Reference::Branch(branch) => branch.as_str(),
};
checkout(cwd, revspec)?;
}
}
}
Ok(())
}
}
pub fn checkout(cwd: &std::path::Path, refspec: &str) -> eyre::Result<()> {
std::process::Command::new("git")
.arg("checkout")
.arg(refspec)
.current_dir(cwd)
.ok()?;
Ok(())
}
pub fn current_oid(cwd: &std::path::Path) -> eyre::Result<String> {
let output = std::process::Command::new("git")
.arg("rev-parse")
.arg("--short")
.arg("HEAD")
.current_dir(cwd)
.ok()?;
let commit = String::from_utf8(output.stdout)?.trim().to_owned();
Ok(commit)
}
