Feature: monoio runtime support

- Add monoio runtime in a separate crate.

- Test: test MonoioRuntime with `Suite::test_all()`

- Add CI: run monoio unit tests with a separate job, because it does
  belong to the workspace

.github/workflows/ci.yaml

@@ -206,6 +206,33 @@ jobs:
           RUST_LOG: debug
           RUST_BACKTRACE: full
 
+
+  # Test external crate.
+  rt-monoio:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Setup | Checkout
+        uses: actions/checkout@v2
+
+
+      - name: Setup | Toolchain
+        uses: actions-rs/[email protected]
+        with:
+          toolchain: "nightly"
+          override: true
+
+
+      - name: Unit Tests
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: --tests --manifest-path "rt-monoio/Cargo.toml"
+        env:
+          RUST_LOG: debug
+          RUST_BACKTRACE: full
+
+
   # Feature "serde" will be enabled if one of the member crates enables
   # "serde", such as `memstore`, when building a cargo workspace.
   #

Cargo.toml

@@ -64,4 +64,5 @@ exclude = [
     "examples/raft-kv-memstore-network-v2",
     "examples/raft-kv-memstore-opendal-snapshot-data",
     "examples/raft-kv-rocksdb",
+    "rt-monoio"
 ]

rt-monoio/Cargo.toml

@@ -0,0 +1,23 @@
+[package]
+name = "openraft-rt-monoio"
+description = "monoio AsyncRuntime support for Openraft"
+documentation = "https://docs.rs/openraft-rt-monoio"
+readme = "README.md"
+version = "0.10.0"
+edition = "2021"
+authors = [
+    "Databend Authors <[email protected]>",
+]
+categories = ["algorithms", "asynchronous", "data-structures"]
+homepage = "https://github.com/datafuselabs/openraft"
+keywords = ["raft", "consensus"]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/datafuselabs/openraft"
+
+[dependencies]
+openraft = { path = "../openraft", version = "0.10.0", default-features = false, features = ["singlethreaded"] }
+
+rand = "0.8"
+tokio = { version = "1.22", features = ["sync"] }
+monoio = "0.2.3"
+local-sync = "0.1.1"

rt-monoio/README.md

@@ -0,0 +1,5 @@
+# openraft-rt-monoio
+
+monoio [`AsyncRuntime`][rt_link] support for Openraft.
+
+[rt_link]: https://docs.rs/openraft/latest/openraft/async_runtime/trait.AsyncRuntime.html