krata: reorganize crates

crates/kratart/src/cfgblk.rs

@@ -0,0 +1,71 @@
+use crate::image::ImageInfo;
+use anyhow::Result;
+use backhand::{FilesystemWriter, NodeHeader};
+use krata::launchcfg::LaunchInfo;
+use log::trace;
+use std::fs;
+use std::fs::File;
+use std::path::PathBuf;
+use uuid::Uuid;
+
+pub struct ConfigBlock<'a> {
+    pub image_info: &'a ImageInfo,
+    pub file: PathBuf,
+    pub dir: PathBuf,
+}
+
+impl ConfigBlock<'_> {
+    pub fn new<'a>(uuid: &Uuid, image_info: &'a ImageInfo) -> Result<ConfigBlock<'a>> {
+        let mut dir = std::env::temp_dir().clone();
+        dir.push(format!("krata-cfg-{}", uuid));
+        fs::create_dir_all(&dir)?;
+        let mut file = dir.clone();
+        file.push("config.squashfs");
+        Ok(ConfigBlock {
+            image_info,
+            file,
+            dir,
+        })
+    }
+
+    pub fn build(&self, launch_config: &LaunchInfo) -> Result<()> {
+        trace!("build launch_config={:?}", launch_config);
+        let manifest = self.image_info.config.to_string()?;
+        let launch = serde_json::to_string(launch_config)?;
+        let mut writer = FilesystemWriter::default();
+        writer.push_dir(
+            "/image",
+            NodeHeader {
+                permissions: 384,
+                uid: 0,
+                gid: 0,
+                mtime: 0,
+            },
+        )?;
+        writer.push_file(
+            manifest.as_bytes(),
+            "/image/config.json",
+            NodeHeader {
+                permissions: 384,
+                uid: 0,
+                gid: 0,
+                mtime: 0,
+            },
+        )?;
+        writer.push_file(
+            launch.as_bytes(),
+            "/launch.json",
+            NodeHeader {
+                permissions: 384,
+                uid: 0,
+                gid: 0,
+                mtime: 0,
+            },
+        )?;
+        let mut file = File::create(&self.file)?;
+        trace!("build write sqaushfs");
+        writer.write(&mut file)?;
+        trace!("build complete");
+        Ok(())
+    }
+}