test: add e2e test for region failover (#4188)

* test: add e2e test for region failover

* chore: add ci cfg

* chore: reduce parallelism to 8

* fix(ci): enable region failure

* chore: set sqlx LogLevel to Off

* refactor: move help functions to utils

.github/workflows/develop.yml

@@ -409,6 +409,132 @@ jobs:
           docker rm $(docker ps -a -q)
           docker system prune -f
 
+  distributed-fuzztest-with-chaos: 
+    name: Fuzz Test with Chaos (Distributed, ${{ matrix.mode.name }}, ${{ matrix.target }})
+    runs-on: ubuntu-latest
+    needs:  build-greptime-ci
+    strategy:
+      matrix:
+        target: ["fuzz_failover_mito_regions"]
+        mode: 
+          - name: "Remote WAL"
+            minio: true
+            kafka: true
+            values: "with-remote-wal.yaml"
+    steps:
+      - uses: actions/checkout@v4
+      - name: Setup Kind
+        uses: ./.github/actions/setup-kind
+      - name: Setup Chaos Mesh
+        uses: ./.github/actions/setup-chaos
+      - if: matrix.mode.minio
+        name: Setup Minio
+        uses: ./.github/actions/setup-minio
+      - if: matrix.mode.kafka
+        name: Setup Kafka cluser
+        uses: ./.github/actions/setup-kafka-cluster
+      - name: Setup Etcd cluser
+        uses: ./.github/actions/setup-etcd-cluster
+      # Prepares for fuzz tests
+      - uses: arduino/setup-protoc@v3
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{ env.RUST_TOOLCHAIN }}
+      - name: Rust Cache
+        uses: Swatinem/rust-cache@v2
+        with:
+          # Shares across multiple jobs
+          shared-key: "fuzz-test-targets"
+      - name: Set Rust Fuzz
+        shell: bash
+        run: |
+          sudo apt-get install -y libfuzzer-14-dev
+          rustup install nightly
+          cargo +nightly install cargo-fuzz cargo-gc-bin
+      # Downloads ci image
+      - name: Download pre-built binariy
+        uses: actions/download-artifact@v4
+        with:
+          name: bin
+          path: .
+      - name: Unzip binary
+        run: |
+          tar -xvf ./bin.tar.gz
+          rm ./bin.tar.gz
+      - name: Build and push GreptimeDB image
+        uses: ./.github/actions/build-and-push-ci-image
+      - name: Wait for etcd
+        run: |
+          kubectl wait \
+            --for=condition=Ready \
+            pod -l app.kubernetes.io/instance=etcd \
+            --timeout=120s \
+            -n etcd-cluster
+      - if: matrix.mode.minio
+        name: Wait for minio
+        run: |
+          kubectl wait \
+            --for=condition=Ready \
+            pod -l app=minio \
+            --timeout=120s \
+            -n minio
+      - if: matrix.mode.kafka
+        name: Wait for kafka
+        run: |
+          kubectl wait \
+            --for=condition=Ready \
+            pod -l app.kubernetes.io/instance=kafka \
+            --timeout=120s \
+            -n kafka-cluster
+      - name: Print etcd info
+        shell: bash
+        run: kubectl get all --show-labels -n etcd-cluster
+      # Setup cluster for test
+      - name: Setup GreptimeDB cluster
+        uses: ./.github/actions/setup-greptimedb-cluster
+        with:
+          image-registry: localhost:5001
+          values-filename: ${{ matrix.mode.values }}
+          enable-region-failover: true
+      - name: Port forward (mysql)
+        run: |
+          kubectl port-forward service/my-greptimedb-frontend 4002:4002 -n my-greptimedb&
+      - name: Fuzz Test
+        uses: ./.github/actions/fuzz-test
+        env:
+          CUSTOM_LIBFUZZER_PATH: /usr/lib/llvm-14/lib/libFuzzer.a
+          GT_MYSQL_ADDR: 127.0.0.1:4002
+        with:
+          target: ${{ matrix.target }}
+          max-total-time: 120
+      - name: Describe Nodes
+        if: failure()
+        shell: bash
+        run: | 
+          kubectl describe nodes      
+      - name: Export kind logs
+        if: failure()
+        shell: bash
+        run: | 
+          kind export logs /tmp/kind
+      - name: Upload logs
+        if: failure()
+        uses: actions/upload-artifact@v4
+        with:
+          name: fuzz-tests-kind-logs-${{ matrix.mode.name }}-${{ matrix.target }}
+          path: /tmp/kind
+          retention-days: 3
+      - name: Delete cluster
+        if: success()
+        shell: bash
+        run: | 
+          kind delete cluster
+          docker stop $(docker ps -a -q)
+          docker rm $(docker ps -a -q)
+          docker system prune -f
+
   sqlness:
     name: Sqlness Test (${{ matrix.mode.name }})
     needs: build