refactor(tvix): move castore into tvix-castore crate r/6629

This splits the pure content-addressed layers from tvix-store into a
`castore` crate, and only leaves PathInfo related things, as well as the
CLI entrypoint in the tvix-store crate.

Notable changes:
 - `fixtures` and `utils` had to be moved out of the `test` cfg, so they
   can be imported from tvix-store.
 - Some ad-hoc fixtures in the test were moved to proper fixtures in the
   same step.
 - The protos are now created by a (more static) recipe in the protos/
   directory.

The (now two) golang targets are commented out, as it's not possible to
update them properly in the same CL. This will be done by a followup CL
once this is merged (and whitby deployed)

Bug: https://b.tvl.fyi/issues/301

Change-Id: I8d675d4bf1fb697eb7d479747c1b1e3635718107
Reviewed-on: https://cl.tvl.fyi/c/depot/+/9370
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: Connor Brewster <cbrewster@hey.com>

1 files changed, 95 insertions, 0 deletions

diff --git a/tvix/castore/src/fixtures.rs b/tvix/castore/src/fixtures.rs
new file mode 100644
index 000000000000..ed3d1ca6e855
--- /dev/null
+++ b/tvix/castore/src/fixtures.rs
@@ -0,0 +1,95 @@
+use crate::{
+    proto::{self, Directory, DirectoryNode, FileNode, SymlinkNode},
+    B3Digest,
+};
+use lazy_static::lazy_static;
+
+pub const HELLOWORLD_BLOB_CONTENTS: &[u8] = b"Hello World!";
+pub const EMPTY_BLOB_CONTENTS: &[u8] = b"";
+
+lazy_static! {
+    pub static ref DUMMY_DIGEST: B3Digest = {
+        let u: &[u8; 32] = &[
+            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+            0x00, 0x00,
+        ];
+        u.into()
+    };
+    pub static ref DUMMY_DIGEST_2: B3Digest = {
+        let u: &[u8; 32] = &[
+            0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+            0x00, 0x00, 0x00, 0x00,
+        ];
+        u.into()
+    };
+    pub static ref DUMMY_DATA_1: bytes::Bytes = vec![0x01, 0x02, 0x03].into();
+    pub static ref DUMMY_DATA_2: bytes::Bytes = vec![0x04, 0x05].into();
+
+    pub static ref HELLOWORLD_BLOB_DIGEST: B3Digest =
+        blake3::hash(HELLOWORLD_BLOB_CONTENTS).as_bytes().into();
+    pub static ref EMPTY_BLOB_DIGEST: B3Digest =
+        blake3::hash(EMPTY_BLOB_CONTENTS).as_bytes().into();
+
+    // 2 bytes
+    pub static ref BLOB_A: bytes::Bytes = vec![0x00, 0x01].into();
+    pub static ref BLOB_A_DIGEST: B3Digest = blake3::hash(&BLOB_A).as_bytes().into();
+
+    // 1MB
+    pub static ref BLOB_B: bytes::Bytes = (0..255).collect::<Vec<u8>>().repeat(4 * 1024).into();
+    pub static ref BLOB_B_DIGEST: B3Digest = blake3::hash(&BLOB_B).as_bytes().into();
+
+    // Directories
+    pub static ref DIRECTORY_WITH_KEEP: proto::Directory = proto::Directory {
+        directories: vec![],
+        files: vec![FileNode {
+            name: b".keep".to_vec().into(),
+            digest: EMPTY_BLOB_DIGEST.clone().into(),
+            size: 0,
+            executable: false,
+        }],
+        symlinks: vec![],
+    };
+    pub static ref DIRECTORY_COMPLICATED: proto::Directory = proto::Directory {
+        directories: vec![DirectoryNode {
+            name: b"keep".to_vec().into(),
+            digest: DIRECTORY_WITH_KEEP.digest().into(),
+            size: DIRECTORY_WITH_KEEP.size(),
+        }],
+        files: vec![FileNode {
+            name: b".keep".to_vec().into(),
+            digest: EMPTY_BLOB_DIGEST.clone().into(),
+            size: 0,
+            executable: false,
+        }],
+        symlinks: vec![SymlinkNode {
+            name: b"aa".to_vec().into(),
+            target: b"/nix/store/somewhereelse".to_vec().into(),
+        }],
+    };
+    pub static ref DIRECTORY_A: Directory = Directory::default();
+    pub static ref DIRECTORY_B: Directory = Directory {
+        directories: vec![DirectoryNode {
+            name: b"a".to_vec().into(),
+            digest: DIRECTORY_A.digest().into(),
+            size: DIRECTORY_A.size(),
+        }],
+        ..Default::default()
+    };
+    pub static ref DIRECTORY_C: Directory = Directory {
+        directories: vec![
+            DirectoryNode {
+                name: b"a".to_vec().into(),
+                digest: DIRECTORY_A.digest().into(),
+                size: DIRECTORY_A.size(),
+            },
+            DirectoryNode {
+                name: b"a'".to_vec().into(),
+                digest: DIRECTORY_A.digest().into(),
+                size: DIRECTORY_A.size(),
+            }
+        ],
+        ..Default::default()
+    };
+}