Refactor Docker build commands in README

Updated Docker build commands for SQLite and Postgres to include Dockerfile specifications.

Fixes #156.

.github/workflows/checks.yml

@@ -13,7 +13,7 @@ jobs:
     name: "Check & Clippy"
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Cache cargo registry
         uses: actions/cache@v4
@@ -48,7 +48,7 @@ jobs:
     name: "Rustdoc"
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Cache cargo registry
         uses: actions/cache@v4
@@ -96,7 +96,7 @@ jobs:
     runs-on: ubuntu-latest
     name: "Formatting"
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - uses: actions-rs/toolchain@v1
         with:
@@ -114,19 +114,18 @@ jobs:
     runs-on: ubuntu-latest
     name: "Cargo Semver Checks"
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: obi1kenobi/cargo-semver-checks-action@v2
         with:
           # exclude the binary package from semver checks, since it is not published as a crate.
-          # exclude postgres temporarily until it is released
-          exclude: taskchampion-sync-server,taskchampion-sync-server-storage-postgres
+          exclude: taskchampion-sync-server
 
   mdbook:
     runs-on: ubuntu-latest
     name: "mdBook Documentation"
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup mdBook
         uses: peaceiris/actions-mdbook@v2

.github/workflows/publish-docs.yml

@@ -2,8 +2,8 @@ name: docs
 
 on:
   push:
-    branches:
-      - main
+    tags:
+      - '*'
 
 permissions:
   contents: write
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup mdBook
         uses: peaceiris/actions-mdbook@v2

.github/workflows/rust-tests.yml

@@ -39,7 +39,7 @@ jobs:
           --health-retries 5
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Cache cargo registry
         uses: actions/cache@v4

.github/workflows/security.yml

@@ -14,7 +14,7 @@ jobs:
     permissions: write-all
     name: "Audit Rust Dependencies"
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: rustsec/audit-check@v2.0.0
         with:
           token: ${{ secrets.GITHUB_TOKEN }}

Cargo.lock

@@ -85,9 +85,9 @@ dependencies = [
 
 [[package]]
 name = "actix-rt"
-version = "2.10.0"
+version = "2.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "24eda4e2a6e042aa4e55ac438a2ae052d3b5da0ecf83d7411e1a368946925208"
+checksum = "92589714878ca59a7626ea19734f0e07a6a875197eec751bb5d3f99e64998c63"
 dependencies = [
  "actix-macros",
  "futures-core",
@@ -186,15 +186,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "addr2line"
-version = "0.24.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dfbe277e56a376000877090da837660b4427aad530e3028d44e0bffe4f89a1c1"
-dependencies = [
- "gimli",
-]
-
 [[package]]
 name = "adler2"
 version = "2.0.1"
@@ -325,21 +316,6 @@ version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c08606f8c3cbf4ce6ec8e28fb0014a2c086708fe954eaa885384a6165172e7e8"
 
-[[package]]
-name = "backtrace"
-version = "0.3.75"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6806a6321ec58106fea15becdad98371e28d92ccbc7c8f1b3b6dd724fe8f1002"
-dependencies = [
- "addr2line",
- "cfg-if",
- "libc",
- "miniz_oxide",
- "object",
- "rustc-demangle",
- "windows-targets",
-]
-
 [[package]]
 name = "base64"
 version = "0.22.1"
@@ -460,7 +436,7 @@ dependencies = [
  "num-traits",
  "serde",
  "wasm-bindgen",
- "windows-link",
+ "windows-link 0.1.3",
 ]
 
 [[package]]
@@ -654,7 +630,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "778e2ac28f6c47af28e4907f13ffd1e1ddbd400980a9abd7c8df189bf578a5ad"
 dependencies = [
  "libc",
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -838,12 +814,6 @@ dependencies = [
  "wasi 0.14.2+wasi-0.2.4",
 ]
 
-[[package]]
-name = "gimli"
-version = "0.31.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "07e28edb80900c19c28f1072f2e8aeca7fa06b23cd4169cefe1af5aa3260783f"
-
 [[package]]
 name = "h2"
 version = "0.3.26"
@@ -1066,17 +1036,6 @@ dependencies = [
  "hashbrown 0.15.4",
 ]
 
-[[package]]
-name = "io-uring"
-version = "0.7.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b86e202f00093dcba4275d4636b93ef9dd75d025ae560d2521b45ea28ab49013"
-dependencies = [
- "bitflags",
- "cfg-if",
- "libc",
-]
-
 [[package]]
 name = "is_terminal_polyfill"
 version = "1.70.1"
@@ -1276,15 +1235,6 @@ dependencies = [
  "autocfg",
 ]
 
-[[package]]
-name = "object"
-version = "0.36.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "62948e14d923ea95ea2c7c86c71013138b66525b86bdc08d2dcc262bdb497b87"
-dependencies = [
- "memchr",
-]
-
 [[package]]
 name = "once_cell"
 version = "1.21.3"
@@ -1618,12 +1568,6 @@ dependencies = [
  "smallvec",
 ]
 
-[[package]]
-name = "rustc-demangle"
-version = "0.1.25"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "989e6739f80c4ad5b13e0fd7fe89531180375b18520cc8c82080e4dc4035b84f"
-
 [[package]]
 name = "rustix"
 version = "1.0.7"
@@ -1634,7 +1578,7 @@ dependencies = [
  "errno",
  "libc",
  "linux-raw-sys",
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -1776,9 +1720,9 @@ checksum = "56199f7ddabf13fe5074ce809e7d3f42b42ae711800501b5b16ea82ad029c39d"
 
 [[package]]
 name = "slab"
-version = "0.4.10"
+version = "0.4.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "04dc19736151f35336d325007ac991178d504a119863a2fcb3758cdb5e52c50d"
+checksum = "7a2ae44ef20feb57a68b23d846850f861394c2e02dc425a50098ae8c90267589"
 
 [[package]]
 name = "smallvec"
@@ -1859,7 +1803,7 @@ dependencies = [
 
 [[package]]
 name = "taskchampion-sync-server"
-version = "0.7.0"
+version = "0.7.2-pre"
 dependencies = [
  "actix-rt",
  "actix-web",
@@ -1883,7 +1827,7 @@ dependencies = [
 
 [[package]]
 name = "taskchampion-sync-server-core"
-version = "0.7.0"
+version = "0.7.2-pre"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -1898,7 +1842,7 @@ dependencies = [
 
 [[package]]
 name = "taskchampion-sync-server-storage-postgres"
-version = "0.7.0"
+version = "0.7.2-pre"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -1921,7 +1865,7 @@ dependencies = [
 
 [[package]]
 name = "taskchampion-sync-server-storage-sqlite"
-version = "0.7.0"
+version = "0.7.2-pre"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -1946,15 +1890,15 @@ dependencies = [
 
 [[package]]
 name = "tempfile"
-version = "3.20.0"
+version = "3.23.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e8a64e3985349f2441a1a9ef0b853f869006c3855f2cda6862a94d26ebb9d6a1"
+checksum = "2d31c77bdf42a745371d260a26ca7163f1e0924b64afa0b688e61b5a9fa02f16"
 dependencies = [
  "fastrand",
  "getrandom",
  "once_cell",
  "rustix",
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -2035,29 +1979,26 @@ checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
 
 [[package]]
 name = "tokio"
-version = "1.47.0"
+version = "1.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "43864ed400b6043a4757a25c7a64a8efde741aed79a056a2fb348a406701bb35"
+checksum = "ff360e02eab121e0bc37a2d3b4d4dc622e6eda3a8e5253d5435ecf5bd4c68408"
 dependencies = [
- "backtrace",
  "bytes",
- "io-uring",
  "libc",
  "mio",
  "parking_lot",
  "pin-project-lite",
  "signal-hook-registry",
- "slab",
  "socket2 0.6.0",
  "tokio-macros",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
 name = "tokio-macros"
-version = "2.5.0"
+version = "2.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6e06d43f1345a3bcd39f6a56dbb7dcab2ba47e68e8ac134855e7e2bdbaf8cab8"
+checksum = "af407857209536a95c8e56f8231ef2c2e2aff839b22e07a1ffcbc617e9db9fa5"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2209,9 +2150,9 @@ checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
 
 [[package]]
 name = "uuid"
-version = "1.17.0"
+version = "1.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3cf4199d1e5d15ddd86a694e4d0dffa9c323ce759fea589f00fef9d81cc1931d"
+checksum = "f33196643e165781c20a5ead5582283a7dacbb87855d867fbc2df3f81eddc1be"
 dependencies = [
  "getrandom",
  "js-sys",
@@ -2339,7 +2280,7 @@ checksum = "c0fdd3ddb90610c7638aa2b3a3ab2904fb9e5cdbecc643ddb3647212781c4ae3"
 dependencies = [
  "windows-implement",
  "windows-interface",
- "windows-link",
+ "windows-link 0.1.3",
  "windows-result",
  "windows-strings",
 ]
@@ -2372,13 +2313,19 @@ version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5e6ad25900d524eaabdbbb96d20b4311e1e7ae1699af4fb28c17ae66c80d798a"
 
+[[package]]
+name = "windows-link"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
+
 [[package]]
 name = "windows-result"
 version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "56f42bd332cc6c8eac5af113fc0c1fd6a8fd2aa08a0119358686e5160d0586c6"
 dependencies = [
- "windows-link",
+ "windows-link 0.1.3",
 ]
 
 [[package]]
@@ -2387,7 +2334,7 @@ version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "56e6c93f3a0c3b36176cb1327a4958a0353d5d166c2a35cb268ace15e91d3b57"
 dependencies = [
- "windows-link",
+ "windows-link 0.1.3",
 ]
 
 [[package]]
@@ -2408,6 +2355,15 @@ dependencies = [
  "windows-targets",
 ]
 
+[[package]]
+name = "windows-sys"
+version = "0.61.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae137229bcbd6cdf0f7b80a31df61766145077ddf49416a728b02cb3921ff3fc"
+dependencies = [
+ "windows-link 0.2.1",
+]
+
 [[package]]
 name = "windows-targets"
 version = "0.52.6"

Cargo.toml

@@ -10,7 +10,7 @@ rust-version = "1.85.0" # MSRV
 
 [workspace.dependencies]
 async-trait = "0.1.88"
-uuid = { version = "^1.17.0", features = ["serde", "v4"] }
+uuid = { version = "^1.18.0", features = ["serde", "v4"] }
 actix-web = "^4.11.0"
 anyhow = "1.0"
 thiserror = "2.0"
@@ -26,7 +26,7 @@ actix-rt = "2"
 tempfile = "3"
 pretty_assertions = "1"
 temp-env = "0.3"
-tokio = { version = "1.47", features = ["rt", "macros"] }
+tokio = { version = "1.48", features = ["rt", "macros"] }
 tokio-postgres = { version = "0.7.13", features = ["with-uuid-1"] }
 bb8 = "0.9.0"
 bb8-postgres = { version = "0.9.0", features = ["with-uuid-1"] }

README.md

@@ -74,20 +74,17 @@ To build the images, execute the following commands.
 
 SQLite:
 ```sh
-source .env
 docker build \
-  --build-arg RUST_VERSION=${RUST_VERSION} \
-  --build-arg ALPINE_VERSION=${ALPINE_VERSION} \
-  -t taskchampion-sync-server docker/sqlite
+  -t taskchampion-sync-server \
+  -f Dockerfile-sqlite
 ```
 
 Postgres:
 ```sh
 source .env
 docker build \
-  --build-arg RUST_VERSION=${RUST_VERSION} \
-  --build-arg ALPINE_VERSION=${ALPINE_VERSION} \
-  -t taskchampion-sync-server-postgres docker/postgres
+  -t taskchampion-sync-server-postgres \
+  -f Dockerfile-postgres
 ```
 
 Now to run it, simply exec.

RELEASING.md

@@ -12,9 +12,7 @@
 1. Run `git tag vX.Y.Z`
 1. Run `git push upstream`
 1. Run `git push upstream --tag vX.Y.Z`
-1. Run `cargo publish -p taskchampion-sync-server-core`
-1. Run `cargo publish -p taskchampion-sync-server-storage-sqlite`
-1. Run `cargo publish -p taskchampion-sync-server-storage-postgres` (and add any other new published packages here)
+1. Run `cargo publish` to publish all packages in the workspace
 1. Bump the patch version in `*/Cargo.toml` and add the `-pre` suffix. This allows `cargo-semver-checks` to check for changes not accounted for in the version delta.
 1. Run `cargo build --release` again to update `Cargo.lock`
 1. Commit that change with comment "Bump to -pre version".

core/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "taskchampion-sync-server-core"
-version = "0.7.0"
+version = "0.7.2-pre"
 authors = ["Dustin J. Mitchell <dustin@mozilla.com>"]
 edition = "2021"
 description = "Core of sync protocol for TaskChampion"

docker-compose.yml

@@ -43,7 +43,7 @@ services:
         condition: service_completed_successfully
 
   tss:
-    image: ghcr.io/gothenburgbitfactory/taskchampion-sync-server:0.7.0
+    image: ghcr.io/gothenburgbitfactory/taskchampion-sync-server:0.7.1
     restart: unless-stopped
     environment:
       - "RUST_LOG=info"

docs/src/usage/binaries.md

@@ -10,16 +10,38 @@ One binary is provided for each storage backend:
 - `taskchampion-sync-server` (SQLite)
 - `taskchampion-sync-server-postgres` (Postgres)
 
+### Building the Binary
+
+This is a standard Rust project, and can be built with `cargo build --release`.
+
+By default, only the SQLite binary is built. To also build the Postgres binary,
+use 
+```none
+cargo build --release --features postgres
+```
+
+To disable building the SQLite binary and build only the Postgres binary, use
+
+```none
+cargo build --release --no-default-features --features postgres
+```
+
 ### Running the Binary
 
 The server is configured with command-line options or environment variables.
 See the `--help` output for full details.
 
 For the SQLite binary, the `--data-dir` option or `DATA_DIR` environment
-variable specifies where the server should store its data. For the Postgres
-binary, the `--connection` option or `CONNECTION` environment variable
-specifies the connection information, in the form of a [LibPQ-style connection
+variable specifies where the server should store its data.
+
+For the Postgres binary, the `--connection` option or `CONNECTION` environment
+variable specifies the connection information, in the form of a [LibPQ-style
+connection
 URI](https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-CONNSTRING-URIS).
+Note that unlike LibPQ, the Rust client only supports `sslmode` values
+`disable`, `prefer`, and `require`, and will always validate CA hostnames and
+certificates when using TLS.
+
 The remaining options are common to all binaries.
 
 The `--listen` option specifies the interface and port the server listens on.

docs/src/usage/docker-compose.md

@@ -1,7 +1,7 @@
 # Docker Compose
 
 The
-[`docker-compose.yml`](https://raw.githubusercontent.com/GothenburgBitFactory/taskchampion-sync-server/refs/tags/v0.7.0/docker-compose.yml)
+[`docker-compose.yml`](https://raw.githubusercontent.com/GothenburgBitFactory/taskchampion-sync-server/refs/tags/v0.7.1/docker-compose.yml)
 file in this repository is sufficient to run taskchampion-sync-server,
 including setting up TLS certificates using Lets Encrypt, thanks to
 [Caddy](https://caddyserver.com/). This setup uses the SQLite backend, which is

postgres/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "taskchampion-sync-server-storage-postgres"
-version = "0.7.0"
+version = "0.7.2-pre"
 authors = ["Dustin J. Mitchell <dustin@v.igoro.us>"]
 edition = "2021"
 description = "Postgres backend for TaskChampion-sync-server"
@@ -16,7 +16,7 @@ bb8.workspace = true
 chrono.workspace = true
 env_logger.workspace = true
 log.workspace = true
-taskchampion-sync-server-core = { path = "../core", version = "0.7.0" }
+taskchampion-sync-server-core = { path = "../core", version = "0.7.2-pre" }
 thiserror.workspace = true
 tokio-postgres.workspace = true
 tokio.workspace = true

postgres/src/lib.rs

@@ -39,6 +39,26 @@ use uuid::Uuid;
 #[cfg(test)]
 mod testing;
 
+/// An `ErrorSink` implementation that logs errors to the Rust log.
+#[derive(Debug, Clone, Copy)]
+pub struct LogErrorSink;
+
+impl LogErrorSink {
+    fn new() -> Box<Self> {
+        Box::new(Self)
+    }
+}
+
+impl bb8::ErrorSink<tokio_postgres::Error> for LogErrorSink {
+    fn sink(&self, e: tokio_postgres::Error) {
+        log::error!("Postgres connection error: {e}");
+    }
+
+    fn boxed_clone(&self) -> Box<dyn bb8::ErrorSink<tokio_postgres::Error>> {
+        Self::new()
+    }
+}
+
 /// A storage backend which uses Postgres.
 pub struct PostgresStorage {
     pool: bb8::Pool<PostgresConnectionManager<MakeTlsConnector>>,
@@ -49,7 +69,10 @@ impl PostgresStorage {
         let connector = native_tls::TlsConnector::new()?;
         let connector = postgres_native_tls::MakeTlsConnector::new(connector);
         let manager = PostgresConnectionManager::new_from_stringlike(connection_string, connector)?;
-        let pool = bb8::Pool::builder().build(manager).await?;
+        let pool = bb8::Pool::builder()
+            .error_sink(LogErrorSink::new())
+            .build(manager)
+            .await?;
         Ok(Self { pool })
     }
 }
@@ -249,8 +272,13 @@ impl StorageTxn for Txn {
                 "UPDATE clients
                     SET latest_version_id = $1,
                         versions_since_snapshot = versions_since_snapshot + 1
-                    WHERE client_id = $2 and latest_version_id = $3",
-                &[&version_id, &self.client_id, &parent_version_id],
+                    WHERE client_id = $2 and (latest_version_id = $3 or latest_version_id = $4)",
+                &[
+                    &version_id,
+                    &self.client_id,
+                    &parent_version_id,
+                    &Uuid::nil(),
+                ],
             )
             .await
             .context("error updating latest_version_id")?;
@@ -666,4 +694,22 @@ mod test {
         })
         .await
     }
+
+    #[tokio::test]
+    /// When an add_version call specifies a `parent_version_id` that does not exist in the
+    /// DB, but no other versions exist, the call succeeds.
+    async fn test_add_version_no_history() -> anyhow::Result<()> {
+        with_db(async |connection_string, db_client| {
+            let storage = PostgresStorage::new(connection_string).await?;
+            let client_id = make_client(&db_client).await?;
+
+            let mut txn = storage.txn(client_id).await?;
+            let version_id = Uuid::new_v4();
+            let parent_version_id = Uuid::new_v4();
+            txn.add_version(version_id, parent_version_id, b"v1".to_vec())
+                .await?;
+            Ok(())
+        })
+        .await
+    }
 }

server/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "taskchampion-sync-server"
-version = "0.7.0"
+version = "0.7.2-pre"
 authors = ["Dustin J. Mitchell <dustin@mozilla.com>"]
 edition = "2021"
 publish = false

sqlite/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "taskchampion-sync-server-storage-sqlite"
-version = "0.7.0"
+version = "0.7.2-pre"
 authors = ["Dustin J. Mitchell <dustin@mozilla.com>"]
 edition = "2021"
 description = "SQLite backend for TaskChampion-sync-server"
@@ -9,7 +9,7 @@ repository = "https://github.com/GothenburgBitFactory/taskchampion-sync-server"
 license = "MIT"
 
 [dependencies]
-taskchampion-sync-server-core = { path = "../core", version = "0.7.0" }
+taskchampion-sync-server-core = { path = "../core", version = "0.7.2-pre" }
 async-trait.workspace = true
 uuid.workspace = true
 anyhow.workspace = true

sqlite/src/lib.rs

@@ -276,11 +276,12 @@ impl StorageTxn for Txn {
              SET
                latest_version_id = ?,
                versions_since_snapshot = versions_since_snapshot + 1
-             WHERE client_id = ? and latest_version_id = ?",
+             WHERE client_id = ? and (latest_version_id = ? or latest_version_id = ?)",
                 params![
                     StoredUuid(version_id),
                     StoredUuid(self.client_id),
-                    StoredUuid(parent_version_id)
+                    StoredUuid(parent_version_id),
+                    StoredUuid(Uuid::nil())
                 ],
             )
             .context("Error updating client for new version")?;
@@ -489,4 +490,21 @@ mod test {
 
         Ok(())
     }
+
+    #[tokio::test]
+    /// When an add_version call specifies a `parent_version_id` that does not exist in the
+    /// DB, but no other versions exist, the call succeeds.
+    async fn test_add_version_no_history() -> anyhow::Result<()> {
+        let tmp_dir = TempDir::new()?;
+        let storage = SqliteStorage::new(tmp_dir.path())?;
+        let client_id = Uuid::new_v4();
+        let mut txn = storage.txn(client_id).await?;
+        txn.new_client(Uuid::nil()).await?;
+
+        let version_id = Uuid::new_v4();
+        let parent_version_id = Uuid::new_v4();
+        txn.add_version(version_id, parent_version_id, b"v1".to_vec())
+            .await?;
+        Ok(())
+    }
 }