add basic schema struct

Cargo.lock

@@ -220,6 +220,8 @@ dependencies = [
  "color-eyre",
  "eyre",
  "jtd",
+ "serde",
+ "serde_json",
  "tracing",
 ]
 

Cargo.toml

@@ -10,4 +10,6 @@ clap = { version = "4.5.4", features = ["derive"] }
 color-eyre = "0.6.3"
 eyre = "0.6.12"
 jtd = "0.3.1"
+serde = { version = "1.0.197", features = ["derive"] }
+serde_json = "1.0.115"
 tracing = "0.1.40"

src/main.rs

@@ -1,5 +1,8 @@
+mod schema;
+
 use clap::Parser;
-use eyre::Result;
+use color_eyre::Result;
+use eyre::WrapErr;
 use std::path::PathBuf;
 
 #[derive(Debug, Parser)]
@@ -11,6 +14,10 @@ struct Cli {
 impl Cli {
     fn run(&self) -> Result<()> {
         println!("{self:#?}");
+
+        let schema = schema::Schema::from_fs(&self.source).wrap_err("could not read schema")?;
+        println!("{schema:#?}");
+
         Ok(())
     }
 }

src/schema.rs

@@ -0,0 +1,15 @@
+use color_eyre::Result;
+use eyre::WrapErr;
+use serde::Deserialize;
+use std::path::Path;
+
+#[derive(Debug, Deserialize)]
+pub struct Schema {}
+
+impl Schema {
+    pub fn from_fs(path: &Path) -> Result<Schema> {
+        let bytes = std::fs::read(path).wrap_err_with(|| format!("could not read {path:?}"))?;
+        serde_json::from_slice(&bytes)
+            .wrap_err_with(|| format!("could not read schema from {path:?}"))
+    }
+}