name: Benchmark

on:
  workflow_dispatch:
  push:
    branches:
      - main

defaults:
  run:
    shell: bash

#
# The bench jobs will:
# 1. Run the benchmark and save the results as a baseline named "current"
# 2. Download the following baselines from S3
#    - The latest baseline from the main branch
#    - The latest baseline from the current branch
# 3. Compare the current benchmark results vs the baselines
# 4. Save the comparison as an artifact
# 5. Upload the current benchmark results as a new baseline and update the latest baseline for the current branch
#

jobs:
  common:
    name: Bench common
    runs-on:
      - self-hosted
      - benches
    timeout-minutes: 60
    steps:
      - name: Install stable toolchain
        uses: dtolnay/rust-toolchain@stable
        with:
          toolchain: 1.75.0

      - name: Configure AWS credentials
        uses: aws-actions/configure-aws-credentials@v4
        with:
          aws-region: us-east-1

      - name: Install dependencies
        run: |
          sudo apt-get -qq -y update
          sudo apt-get -qq -y install clang curl
          cargo install --quiet --locked critcmp cargo-make

      - name: Checkout changes
        uses: actions/checkout@v4
      
      - name: Run benchmark
        run: |
          cargo make ci-bench -- --save-baseline current
      
      - name: Copy results from AWS S3 bucket
        run: |
          BRANCH_NAME=$(echo ${{ github.head_ref || github.ref_name }} | sed 's/[^a-zA-Z0-9]/-/g')

          aws s3 sync s3://${{ secrets.AWS_S3_GITHUB_ACTIONS_BUCKET_NAME }}/bench-results/${{ github.job }}/main/latest bench-results-main || true
          aws s3 sync s3://${{ secrets.AWS_S3_GITHUB_ACTIONS_BUCKET_NAME }}/bench-results/${{ github.job }}/$BRANCH_NAME/latest bench-results-previous || true

      - name: Compare current benchmark results vs baseline
        run: |
          mkdir -p bench-results
          critcmp current bench-results-main/${{ matrix.target }}.json bench-results-previous/${{ matrix.target }}.json | tee bench-results/${{ github.job }}-comparison.txt

          # Create a summary of the comparison
          echo "\`\`\`" >> $GITHUB_STEP_SUMMARY
          cat bench-results/${{ github.job }}-comparison.txt >> $GITHUB_STEP_SUMMARY
          echo "\`\`\`" >> $GITHUB_STEP_SUMMARY

      - name: Save results as artifact
        uses: actions/upload-artifact@v1
        with:
          name: ${{ github.job }}-comparison.txt
          path: bench-results/${{ github.job }}-comparison.txt

      - name: Copy results to AWS S3 bucket
        run: |
          BRANCH_NAME=$(echo ${{ github.head_ref || github.ref_name }} | sed 's/[^a-zA-Z0-9]/-/g')

          cargo make ci-bench -- --load-baseline current --save-baseline previous
          critcmp --export previous > bench-results/${{ matrix.target }}.json

          aws s3 sync bench-results s3://${{ secrets.AWS_S3_GITHUB_ACTIONS_BUCKET_NAME }}/bench-results/${{ github.job }}/$BRANCH_NAME/${{ github.run_id }}
          aws s3 sync bench-results s3://${{ secrets.AWS_S3_GITHUB_ACTIONS_BUCKET_NAME }}/bench-results/${{ github.job }}/$BRANCH_NAME/latest

  engines:
    name: Benchmark engines
    runs-on:
      - self-hosted
      - benches
    timeout-minutes: 60
    permissions:
      id-token: write
      contents: read
    strategy:
      fail-fast: false
      matrix:
        include:
          - target: "lib-mem"
            features: "kv-mem"
          - target: "lib-rocksdb"
            features: "kv-rocksdb"
          - target: "lib-fdb"
            features: "kv-fdb-7_1"
          - target: "sdk-mem"
            features: "kv-mem"
          - target: "sdk-rocksdb"
            features: "kv-rocksdb"
          - target: "sdk-fdb"
            features: "kv-fdb-7_1"
          # This one fails because the server consumes too much memory and the kernel kills it. I tried with instances up to 16GB of RAM.
          # - target: "sdk-ws"
          #   features: "protocol-ws"
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Install stable toolchain
        uses: dtolnay/rust-toolchain@stable
        with:
          toolchain: 1.75.0

      - name: Setup cache
        uses: Swatinem/rust-cache@v2
        with:
          save-if: ${{ github.ref == 'refs/heads/main' }}

      - name: Configure AWS credentials
        uses: aws-actions/configure-aws-credentials@v4
        with:
          aws-region: us-east-1

      - name: Install dependencies
        run: |
          sudo apt-get -qq -y update
          sudo apt-get -qq -y install clang curl
          cargo install --quiet --locked critcmp cargo-make

      # Install FoundationDB if needed
      - name: Setup FoundationDB
        uses: foundationdb-rs/foundationdb-actions-install@v2.1.0
        if: ${{ matrix.target == 'lib-fdb' || matrix.target == 'sdk-fdb' }}
        with:
          version: "7.1.30"

      # Run SurrealDB in the background if needed
      - name: Build and start SurrealDB
        if: ${{ matrix.target == 'sdk-ws' }}
        run: |
          cargo make build
          
          # Kill any potential previous instance of the server. The runner may be reused.
          pkill -9 surreal || true
          ./target/release/surreal start 2>&1 >surrealdb.log &

          set +e
          echo "Waiting for surreal to be ready..."
          tries=0
          while [[ $tries < 5 ]]; do
            ./target/release/surreal is-ready 2>/dev/null && echo "Ready!" && exit 0 || sleep 1
            tries=$((tries + 1))
          done

          echo "#####"
          echo "SurrealDB server failed to start!"
          echo "#####"
          cat surrealdb.log
          exit 1

      - name: Run benchmark
        env:
          BENCH_FEATURES: "${{ matrix.features }}"
          BENCH_DURATION: 60
          BENCH_WORKER_THREADS: 2
        run: |
          cargo make bench-${{ matrix.target }} -- --save-baseline current

          # Kill surreal server if it's running
          pkill -9 surreal || true
      
      - name: Copy results from AWS S3 bucket
        run: |
          BRANCH_NAME=$(echo ${{ github.head_ref || github.ref_name }} | sed 's/[^a-zA-Z0-9]/-/g')

          aws s3 sync s3://${{ secrets.AWS_S3_GITHUB_ACTIONS_BUCKET_NAME }}/bench-results/${{ github.job }}/main/latest bench-results-main || true
          aws s3 sync s3://${{ secrets.AWS_S3_GITHUB_ACTIONS_BUCKET_NAME }}/bench-results/${{ github.job }}/$BRANCH_NAME/latest bench-results-previous || true

      - name: Compare current benchmark results vs baseline
        run: |
          mkdir -p bench-results
          critcmp current bench-results-main/${{ matrix.target }}.json bench-results-previous/${{ matrix.target }}.json | tee bench-results/${{ matrix.target }}-comparison.txt

          # Create a summary of the comparison
          echo "\`\`\`" >> $GITHUB_STEP_SUMMARY
          cat bench-results/${{ matrix.target }}-comparison.txt >> $GITHUB_STEP_SUMMARY
          echo "\`\`\`" >> $GITHUB_STEP_SUMMARY

      - name: Save results as artifact
        uses: actions/upload-artifact@v1
        with:
          name: ${{ matrix.target }}-comparison.txt
          path: bench-results/${{ matrix.target }}-comparison.txt

      - name: Copy results to AWS S3 bucket
        env:
          BENCH_FEATURES: "${{ matrix.features }}"
        run: |
          BRANCH_NAME=$(echo ${{ github.head_ref || github.ref_name }} | sed 's/[^a-zA-Z0-9]/-/g')

          cargo make bench-${{ matrix.target }} -- --load-baseline current --save-baseline previous
          critcmp --export previous > bench-results/${{ matrix.target }}.json

          aws s3 sync bench-results s3://${{ secrets.AWS_S3_GITHUB_ACTIONS_BUCKET_NAME }}/bench-results/${{ github.job }}/$BRANCH_NAME/${{ github.run_id }}
          aws s3 sync bench-results s3://${{ secrets.AWS_S3_GITHUB_ACTIONS_BUCKET_NAME }}/bench-results/${{ github.job }}/$BRANCH_NAME/latest