Add get_blob_stream (prefer GetRawBlob)

.github/workflows/ci.yaml

@@ -67,9 +67,57 @@ jobs:
       - name: Test ostree-rs-ext
         run: ./ci/test-ostree-rs-ext.sh
 
+  test-old-skopeo:
+    name: Test (old skopeo)
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+          fetch-depth: 20
+      - name: Test in AlmaLinux bootc container (skopeo 1.18)
+        run: |
+          set -euxo pipefail
+          rm -rf .ci-cargo-home
+          mkdir -p .ci-cargo-home
+          docker run --rm \
+            -e CARGO_TARGET_DIR=/tmp/target \
+            -e EXPECT_BLOB_STREAM_SOURCE=GetBlob \
+            -v "$PWD:/src" \
+            -v "$PWD/.ci-cargo-home:/root/.cargo" \
+            -w /src \
+            quay.io/almalinuxorg/almalinux-bootc:10.0 \
+            sh -lc 'dnf -y install cargo rustc openssl-devel pkg-config >/dev/null && skopeo --version && cargo test --all-features -- --nocapture --quiet'
+          sudo rm -rf .ci-cargo-home
+
+  test-new-skopeo:
+    name: Test (new skopeo)
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
+          fetch-depth: 20
+      - name: Test in CentOS Stream 10 container (skopeo >= 1.19)
+        run: |
+          set -euxo pipefail
+          rm -rf .ci-cargo-home
+          mkdir -p .ci-cargo-home
+          docker run --rm \
+            -e CARGO_TARGET_DIR=/tmp/target \
+            -e EXPECT_BLOB_STREAM_SOURCE=GetRawBlob \
+            -v "$PWD:/src" \
+            -v "$PWD/.ci-cargo-home:/root/.cargo" \
+            -w /src \
+            quay.io/centos/centos:stream10 \
+            sh -lc 'dnf -y install cargo rustc skopeo openssl-devel pkg-config >/dev/null && skopeo --version && cargo test --all-features -- --nocapture --quiet'
+          sudo rm -rf .ci-cargo-home
+
   required-checks:
     if: always()
-    needs: [semver-checks, build-test]
+    needs: [semver-checks, build-test, test-old-skopeo, test-new-skopeo]
     runs-on: ubuntu-latest
     steps:
       - name: Check all jobs

Cargo.toml

@@ -10,6 +10,7 @@ rust-version = "1.70.0"
 
 [dependencies]
 futures-util = "0.3.13"
+hex = "0.4.3"
 # NOTE when bumping this in a semver-incompatible way, because we re-export it you
 # must also bump the semver of this project.
 # See also https://github.com/youki-dev/oci-spec-rs/pull/288
@@ -18,6 +19,7 @@ rustix = { version = "1.0", features = ["process", "fs", "net"] }
 serde = { features = ["derive"], version = "1.0.125" }
 serde_json = "1.0.64"
 semver = "1.0.4"
+sha2 = "0.10.9"
 thiserror = "2"
 tokio = { features = ["fs", "io-util", "macros", "process", "rt", "sync"], version = "1" }
 tracing = "0.1"
@@ -29,6 +31,7 @@ itertools = "0.14.0"
 anyhow = "1.0"
 bytes = "1.5"
 clap = { version = "4.4", features = ["derive"] }
+ocidir = "0.7.2"
 tempfile = "3.20.0"
 
 [lib]