feat: add preserve arg to sqlness runner

.github/workflows/develop.yml

@@ -184,13 +184,13 @@ jobs:
       - name: Unzip binaries
         run: tar -xvf ./bins.tar.gz
       - name: Run sqlness
-        run: RUST_BACKTRACE=1 ./bins/sqlness-runner -c ./tests/cases --bins-dir ./bins
+        run: RUST_BACKTRACE=1 ./bins/sqlness-runner -c ./tests/cases --bins-dir ./bins --preserve-state
       - name: Upload sqlness logs
         if: always()
         uses: actions/upload-artifact@v4
         with:
           name: sqlness-logs
-          path: /tmp/greptime-*.log
+          path: /tmp/sqlness-*
           retention-days: 3
 
   sqlness-kafka-wal:
@@ -214,13 +214,13 @@ jobs:
         working-directory: tests-integration/fixtures/kafka
         run: docker compose -f docker-compose-standalone.yml up -d --wait
       - name: Run sqlness
-        run: RUST_BACKTRACE=1 ./bins/sqlness-runner -w kafka -k 127.0.0.1:9092 -c ./tests/cases --bins-dir ./bins
+        run: RUST_BACKTRACE=1 ./bins/sqlness-runner -w kafka -k 127.0.0.1:9092 -c ./tests/cases --bins-dir ./bins --preserve-state
       - name: Upload sqlness logs
         if: always()
         uses: actions/upload-artifact@v4
         with:
           name: sqlness-logs-with-kafka-wal
-          path: /tmp/greptime-*.log
+          path: /tmp/sqlness-*
           retention-days: 3
 
   fmt:

tests/runner/Cargo.toml

@@ -18,5 +18,6 @@ common-time.workspace = true
 serde.workspace = true
 serde_json.workspace = true
 sqlness = { version = "0.5" }
+tempfile.workspace = true
 tinytemplate = "1.2"
 tokio.workspace = true

tests/runner/src/main.rs

@@ -67,16 +67,22 @@ struct Args {
     /// If not set, sqlness will build GreptimeDB on the fly.
     #[clap(long)]
     bins_dir: Option<PathBuf>,
+
+    /// Preserve persistent state in the temporary directory.
+    /// This may affect future test runs.
+    #[clap(long)]
+    preserve_state: bool,
 }
 
 #[tokio::main]
 async fn main() {
     let args = Args::parse();
 
-    #[cfg(windows)]
-    let data_home = std::env::temp_dir();
-    #[cfg(not(windows))]
-    let data_home = std::path::PathBuf::from("/tmp");
+    let temp_dir = tempfile::Builder::new()
+        .prefix("sqlness")
+        .tempdir()
+        .unwrap();
+    let data_home = temp_dir.path().to_path_buf();
 
     let config = ConfigBuilder::default()
         .case_dir(util::get_case_dir(args.case_dir))
@@ -104,4 +110,9 @@ async fn main() {
         Env::new(data_home, args.server_addr, wal, args.bins_dir),
     );
     runner.run().await.unwrap();
+
+    // skip clean up and exit
+    if args.preserve_state {
+        println!("Preserving state in {:?}", temp_dir.into_path());
+    }
 }