From 54578efb4fe92e26a25bc9329c07ac0a8dc33deb Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Sat, 30 Oct 2021 00:29:20 +0200
Subject: driver: read pins from YAML file

---
 .gitignore                   |  1 +
 crates/driver/src/context.rs |  4 ++--
 crates/driver/src/main.rs    |  6 +++++-
 crates/driver/src/pin.rs     | 39 +++++++++++++++++++++++++++++++++++++++
 4 files changed, 47 insertions(+), 3 deletions(-)
 create mode 100644 crates/driver/src/pin.rs

diff --git a/.gitignore b/.gitignore
index ea8c4bf..ff9dbb2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 /target
+/examples/*.yml
diff --git a/crates/driver/src/context.rs b/crates/driver/src/context.rs
index a7ea302..b77655f 100644
--- a/crates/driver/src/context.rs
+++ b/crates/driver/src/context.rs
@@ -16,7 +16,7 @@ use common::{
 	types::TaskID,
 };
 
-use crate::{args::*, paths, task::*};
+use crate::{args::*, paths, pin::Pins, task::*};
 
 #[derive(Debug, Clone, Copy)]
 pub enum ErrorKind<'ctx> {
@@ -140,7 +140,7 @@ pub struct Context {
 }
 
 impl Context {
-	pub fn new(tasks: HashMap<TaskID, TaskDef>) -> Self {
+	pub fn new(tasks: HashMap<TaskID, TaskDef>, _pins: Pins) -> Self {
 		let platforms: HashMap<_, _> = [
 			arg(
 				"build",
diff --git a/crates/driver/src/main.rs b/crates/driver/src/main.rs
index b9a6173..2763dfa 100644
--- a/crates/driver/src/main.rs
+++ b/crates/driver/src/main.rs
@@ -2,6 +2,7 @@ mod args;
 mod context;
 mod driver;
 mod paths;
+mod pin;
 mod recipe;
 mod resolve;
 mod task;
@@ -28,7 +29,10 @@ fn main() {
 
 	let runner = unsafe { Runner::new(&runner::Options { jobs: opts.jobs }) }.unwrap();
 
-	let ctx = context::Context::new(recipe::read_recipes("examples/recipes").unwrap());
+	let ctx = context::Context::new(
+		recipe::read_recipes("examples/recipes").unwrap(),
+		pin::read_pins("examples/pins.yml").unwrap(),
+	);
 
 	let mut rsv = resolve::Resolver::new(&ctx);
 
diff --git a/crates/driver/src/pin.rs b/crates/driver/src/pin.rs
new file mode 100644
index 0000000..26e445c
--- /dev/null
+++ b/crates/driver/src/pin.rs
@@ -0,0 +1,39 @@
+use std::{collections::HashMap, fs::File, path::Path};
+
+use serde::{Deserialize, Serialize};
+
+use common::{error::*, string_hash::*};
+
+#[derive(Clone, Debug, Deserialize, Serialize)]
+pub struct Args {
+	pub host: Option<String>,
+	pub target: Option<String>,
+}
+
+#[derive(Clone, Debug, Deserialize, Serialize)]
+pub struct Provides {
+	pub recipe: String,
+	pub task: String,
+	pub output: Vec<String>,
+	pub args: Args,
+}
+
+#[derive(Clone, Debug, Deserialize, Serialize)]
+#[serde(rename_all = "kebab-case")]
+pub struct Pin {
+	pub hash: Option<ArchiveHash>,
+	#[serde(default)]
+	pub provides: Vec<Provides>,
+	#[serde(default)]
+	pub is_rootfs: bool,
+}
+
+pub type Pins = HashMap<String, Pin>;
+
+pub fn read_pins<P: AsRef<Path>>(path: P) -> Result<Pins> {
+	let f = File::open(path)?;
+	let pins: Pins = serde_yaml::from_reader(f)
+		.map_err(Error::new)
+		.context("YAML error")?;
+	Ok(pins)
+}
-- 
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