chore: asynchronous IO for connection fiber

.github/actions/regression-tests/action.yml

@@ -31,6 +31,11 @@ inputs:
   epoll:
     required: false
     type: string
+  df-arg:
+    default: ""
+    required: false
+    type: string
+
 runs:
   using: "composite"
   # bring back timeouts once composite actions start supporting them
@@ -70,14 +75,19 @@ runs:
         export ROOT_DIR="${GITHUB_WORKSPACE}/tests/dragonfly/valkey_search"
         export UBSAN_OPTIONS=print_stacktrace=1:halt_on_error=1 # to crash on errors
 
+        if [[ "${{inputs.df-arg}}" == 'experimental_io_loop_v2' ]]; then
+          echo "df-arg: experimental io loop v2"
+          export DF_ARG="--df experimental_io_loop_v2=true"
+        fi
+
         if [[ "${{inputs.epoll}}" == 'epoll' ]]; then
           export FILTER="${{inputs.filter}} and not exclude_epoll"
           # Run only replication tests with epoll
-          timeout 80m pytest -m "$FILTER" --durations=10 --timeout=300 --color=yes --json-report --json-report-file=report.json dragonfly --df force_epoll=true --log-cli-level=INFO || code=$?
+          timeout 80m pytest -m "$FILTER" --durations=10 --timeout=300 --color=yes --json-report --json-report-file=report.json dragonfly $DF_ARG --df force_epoll=true --log-cli-level=INFO || code=$?
         else
           export FILTER="${{inputs.filter}}"
           # Run only replication tests with iouring
-          timeout 80m pytest -m "$FILTER" --durations=10 --timeout=300 --color=yes --json-report --json-report-file=report.json dragonfly --log-cli-level=INFO || code=$?
+          timeout 80m pytest -m "$FILTER" --durations=10 --timeout=300 --color=yes --json-report --json-report-file=report.json dragonfly $DF_ARG --log-cli-level=INFO || code=$?
         fi
 
         # timeout returns 124 if we exceeded the timeout duration

.github/workflows/ioloop-v2-regtests.yml

@@ -0,0 +1,80 @@
+name: RegTests IoLoopV2
+
+# Manually triggered only
+on:
+  workflow_dispatch:
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        # Test of these containers
+        container: ["ubuntu-dev:20"]
+        proactor: [Uring]
+        build-type: [Debug, Release]
+        runner: [ubuntu-latest, [self-hosted, linux, ARM64]]
+
+    runs-on: ${{ matrix.runner }}
+
+    container:
+      image: ghcr.io/romange/${{ matrix.container }}
+      options: --security-opt seccomp=unconfined --sysctl "net.ipv6.conf.all.disable_ipv6=0"
+      volumes:
+        - /var/crash:/var/crash
+
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          submodules: true
+
+      - name: Print environment info
+        run: |
+          cat /proc/cpuinfo
+          ulimit -a
+          env
+
+      - name: Configure & Build
+        run: |
+          # -no-pie to disable address randomization so we could symbolize stacktraces
+          cmake -B ${GITHUB_WORKSPACE}/build -DCMAKE_BUILD_TYPE=${{matrix.build-type}} -GNinja \
+                -DCMAKE_CXX_COMPILER_LAUNCHER=ccache -DPRINT_STACKTRACES_ON_SIGNAL=ON \
+                -DCMAKE_CXX_FLAGS=-no-pie -DHELIO_STACK_CHECK:STRING=4096
+
+          cd ${GITHUB_WORKSPACE}/build  && ninja dragonfly
+          pwd
+          ls -l ..
+
+      - name: Run regression tests action
+        uses: ./.github/actions/regression-tests
+        with:
+          dfly-executable: dragonfly
+          gspace-secret: ${{ secrets.GSPACES_BOT_DF_BUILD }}
+          build-folder-name: build
+          filter: ${{ matrix.build-type == 'Release' && 'not debug_only and not tls' || 'not opt_only and not tls' }}
+          aws-access-key-id: ${{ secrets.AWS_S3_ACCESS_KEY }}
+          aws-secret-access-key: ${{ secrets.AWS_S3_ACCESS_SECRET }}
+          s3-bucket: ${{ secrets.S3_REGTEST_BUCKET }}
+          df-arg: "experimental_io_loop_v2"
+
+      - name: Upload logs on failure
+        if: failure()
+        uses: actions/upload-artifact@v4
+        with:
+          name: logs
+          path: /tmp/failed/*
+
+      - name: Copy binary on a self hosted runner
+        if: failure()
+        run: |
+          # We must use sh syntax.
+          if [ "$RUNNER_ENVIRONMENT" = "self-hosted" ]; then
+            cd ${GITHUB_WORKSPACE}/build
+            timestamp=$(date +%Y-%m-%d_%H:%M:%S)
+            mv ./dragonfly /var/crash/dragonfly_${timestamp}
+          fi
+
+  lint-test-chart:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+      - uses: ./.github/actions/lint-test-chart