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use super::starlark::eval::evaluate_file;
use super::starlark::EnvironmentContext;
use clap::{App, AppSettings, Arg, SubCommand};
use std::path::{Path, PathBuf};
use crate::starlark::eval::EvalResult;
use crate::starlark::values::Pipeline;
use slog::warn;
use slog::Drain;
pub struct PrintlnDrain {
min_level: slog::Level,
}
impl Drain for PrintlnDrain {
type Ok = ();
type Err = std::io::Error;
fn log(
&self,
record: &slog::Record,
_values: &slog::OwnedKVList,
) -> Result<Self::Ok, Self::Err> {
if record.level().is_at_least(self.min_level) {
println!("{}", record.msg());
}
Ok(())
}
}
pub fn run_cli() -> Result<(), String> {
let matches = App::new("tugger")
.setting(AppSettings::ArgRequiredElseHelp)
.version("0.1")
.author("Gregory Szorc <gregory.szorc@gmail.com>")
.long_about("Build distributable applications")
.subcommand(
SubCommand::with_name("eval")
.about("Evaluate a tugger configuration file and show results")
.arg(
Arg::with_name("path")
.value_name("PATH")
.default_value("tugger.ship")
.help("Path to file to evaluate"),
),
)
.subcommand(
SubCommand::with_name("repl")
.about("Start an interactive REPL to evaluate build rules"),
)
.subcommand(
SubCommand::with_name("run")
.about("Execute a tugger configuration file")
.arg(
Arg::with_name("pipelines")
.long("pipeline")
.takes_value(true)
.multiple(true)
.value_name("pipeline")
.help("Name of pipeline to execute"),
)
.arg(
Arg::with_name("path")
.value_name("PATH")
.default_value("tugger.ship")
.help("Path to file to evaluate"),
),
)
.get_matches();
let logger = slog::Logger::root(
PrintlnDrain {
min_level: slog::Level::Info,
}
.fuse(),
slog::o!(),
);
let cwd = std::env::current_dir().unwrap();
let dist_path = cwd.join("dist");
match matches.subcommand() {
("eval", Some(args)) => {
let path = args.value_of("path").unwrap();
let eval_result = eval_file(&logger, path, &dist_path)?;
let env = eval_result.env;
let pipelines = env
.get("PIPELINES")
.or_else(|e| Err(format!("could not get PIPELINES: {:#?}", e)))?;
if pipelines.get_type() != "list" {
return Err("PIPELINES is not a list".to_string());
}
warn!(logger, "found {} pipelines", pipelines.length().unwrap());
for pipeline in pipelines.into_iter().unwrap() {
let raw_value = pipeline.0.borrow();
let pipeline: &Pipeline = raw_value.as_any().downcast_ref().unwrap();
warn!(logger, "{:#?}", pipeline);
}
Ok(())
}
("repl", Some(_)) => {
let context = EnvironmentContext {
cwd,
logger,
dist_path,
};
let env = super::starlark::global_environment(&context)
.or_else(|_| Err(String::from("error creating environment")))?;
starlark_repl::repl(&env, false);
Ok(())
}
("run", Some(args)) => {
let path = args.value_of("path").unwrap();
let eval_result = eval_file(&logger, path, &dist_path)?;
if let Some(pipelines) = args.values_of("pipelines") {
for pipeline in pipelines {
eval_result.execute_pipeline(pipeline)?;
}
} else {
eval_result.execute_all_pipelines()?;
}
Ok(())
}
_ => Err("invalid sub-command".to_string()),
}
}
fn eval_file(logger: &slog::Logger, path: &str, dist_path: &Path) -> Result<EvalResult, String> {
let path = PathBuf::from(path);
let normalized = path.canonicalize().unwrap();
let context = EnvironmentContext {
cwd: normalized.parent().unwrap().to_path_buf(),
logger: logger.clone(),
dist_path: dist_path.to_path_buf(),
};
match evaluate_file(&path, &context) {
Ok(res) => {
warn!(logger, "evaluation complete");
Ok(res)
}
Err(e) => Err(format!("error evaluating {}: {:#?}", path.display(), e)),
}
}