ostree-ext: make OCI history reproducible

lib/src/install.rs

@@ -535,7 +535,7 @@ impl InstallAleph {
                 l.get(oci_spec::image::ANNOTATION_CREATED)
                     .map(|s| s.as_str())
             })
-            .and_then(crate::status::try_deserialize_timestamp);
+            .and_then(bootc_utils::try_deserialize_timestamp);
         let r = InstallAleph {
             image: src_imageref.imgref.name.clone(),
             version: imgstate.version().as_ref().map(|s| s.to_string()),

lib/src/status.rs

@@ -102,16 +102,6 @@ pub(crate) struct Deployments {
     pub(crate) other: VecDeque<ostree::Deployment>,
 }
 
-pub(crate) fn try_deserialize_timestamp(t: &str) -> Option<chrono::DateTime<chrono::Utc>> {
-    match chrono::DateTime::parse_from_rfc3339(t).context("Parsing timestamp") {
-        Ok(t) => Some(t.into()),
-        Err(e) => {
-            tracing::warn!("Invalid timestamp in image: {:#}", e);
-            None
-        }
-    }
-}
-
 pub(crate) fn labels_of_config(
     config: &oci_spec::image::ImageConfiguration,
 ) -> Option<&std::collections::HashMap<String, String>> {

lib/src/store/ostree_container.rs

@@ -1,4 +1,4 @@
-use anyhow::{Context, Result};
+use anyhow::Result;
 
 use ostree_ext::container as ostree_container;
 use ostree_ext::oci_spec;
@@ -52,7 +52,7 @@ fn create_imagestatus(
                 .map(|s| s.as_str())
         })
         .or_else(|| config.created().as_deref())
-        .and_then(try_deserialize_timestamp);
+        .and_then(bootc_utils::try_deserialize_timestamp);
 
     let version = ostree_container::version_for_config(config).map(ToOwned::to_owned);
     let architecture = config.architecture().to_string();
@@ -70,13 +70,3 @@ fn labels_of_config(
 ) -> Option<&std::collections::HashMap<String, String>> {
     config.config().as_ref().and_then(|c| c.labels().as_ref())
 }
-
-fn try_deserialize_timestamp(t: &str) -> Option<chrono::DateTime<chrono::Utc>> {
-    match chrono::DateTime::parse_from_rfc3339(t).context("Parsing timestamp") {
-        Ok(t) => Some(t.into()),
-        Err(e) => {
-            tracing::warn!("Invalid timestamp in image: {:#}", e);
-            None
-        }
-    }
-}

ostree-ext/src/container/encapsulate.rs

@@ -133,21 +133,34 @@ pub(crate) fn export_chunked(
         .uncompressed_sha256
         .clone();
 
+    let created = imgcfg
+        .created()
+        .as_deref()
+        .and_then(bootc_utils::try_deserialize_timestamp)
+        .unwrap_or_default();
     // Add the ostree layer
-    ociw.push_layer(manifest, imgcfg, ostree_layer, description, None);
+    ociw.push_layer_full(
+        manifest,
+        imgcfg,
+        ostree_layer,
+        None::<HashMap<String, String>>,
+        description,
+        created,
+    );
     // Add the component/content layers
     let mut buf = [0; 8];
     let sep = COMPONENT_SEPARATOR.encode_utf8(&mut buf);
     for (layer, name, mut packages) in layers {
         let mut annotation_component_layer = HashMap::new();
         packages.sort();
         annotation_component_layer.insert(CONTENT_ANNOTATION.to_string(), packages.join(sep));
-        ociw.push_layer(
+        ociw.push_layer_full(
             manifest,
             imgcfg,
             layer,
-            name.as_str(),
             Some(annotation_component_layer),
+            name.as_str(),
+            created,
         );
     }
 

ostree-ext/src/container/store.rs

@@ -1490,12 +1490,22 @@ pub(crate) fn export_to_oci(
             .get(i)
             .and_then(|h| h.comment().as_deref())
             .unwrap_or_default();
-        dest_oci.push_layer(
+
+        let previous_created = srcinfo
+            .configuration
+            .history()
+            .get(i)
+            .and_then(|h| h.created().as_deref())
+            .and_then(bootc_utils::try_deserialize_timestamp)
+            .unwrap_or_default();
+
+        dest_oci.push_layer_full(
             &mut new_manifest,
             &mut new_config,
             layer,
-            previous_description,
             previous_annotations,
+            previous_description,
+            previous_created,
         )
     }
 

ostree-ext/src/fixture.rs

@@ -26,6 +26,7 @@ use ocidir::cap_std::fs::{DirBuilder, DirBuilderExt as _};
 use ocidir::oci_spec::image::ImageConfigurationBuilder;
 use regex::Regex;
 use std::borrow::Cow;
+use std::collections::HashMap;
 use std::ffi::CString;
 use std::fmt::Write as _;
 use std::io::{self, Write};
@@ -1014,8 +1015,20 @@ impl NonOstreeFixture {
         let bw = bw.into_inner()?;
         let new_layer = bw.complete()?;
 
-        self.src_oci
-            .push_layer(&mut manifest, &mut config, new_layer, "root", None);
+        let created = config
+            .created()
+            .as_deref()
+            .and_then(bootc_utils::try_deserialize_timestamp)
+            .unwrap_or_default();
+
+        self.src_oci.push_layer_full(
+            &mut manifest,
+            &mut config,
+            new_layer,
+            None::<HashMap<String, String>>,
+            "root",
+            created,
+        );
         let config = self.src_oci.write_config(config)?;
 
         manifest.set_config(config);

utils/Cargo.toml

@@ -8,6 +8,7 @@ repository = "https://github.com/bootc-dev/bootc"
 
 [dependencies]
 anyhow = { workspace = true }
+chrono = { workspace = true, features = ["std"] }
 rustix = { workspace = true }
 serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true }

utils/src/lib.rs

@@ -8,5 +8,7 @@ mod path;
 pub use path::*;
 mod iterators;
 pub use iterators::*;
+mod timestamp;
+pub use timestamp::*;
 mod tracing_util;
 pub use tracing_util::*;

utils/src/timestamp.rs

@@ -0,0 +1,13 @@
+use anyhow::Context;
+use chrono;
+
+/// Try to parse an RFC 3339, warn on error.
+pub fn try_deserialize_timestamp(t: &str) -> Option<chrono::DateTime<chrono::Utc>> {
+    match chrono::DateTime::parse_from_rfc3339(t).context("Parsing timestamp") {
+        Ok(t) => Some(t.into()),
+        Err(e) => {
+            tracing::warn!("Invalid timestamp in image: {:#}", e);
+            None
+        }
+    }
+}