ci: add job with SCION to run integration tests

.github/workflows/integration-tests.yml

@@ -0,0 +1,74 @@
+name: Integration tests
+
+on:
+  pull_request:
+  # Run CI on the main branch after every merge.
+  # This is important to fill the GitHub Actions cache in a way that PRs can see it.
+  push:
+    branches:
+      - main
+  # Run CI on the main branch every Sunday.
+  schedule:
+    - cron: '14 3 * * 0'
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+env:
+  CARGO_TERM_COLOR: always
+  CLICOLOR_FORCE: 1
+  # Disable incremental compilation.
+  #
+  # Incremental compilation is useful as part of an edit-build-test-edit cycle,
+  # as it lets the compiler avoid recompiling code that hasn't changed. However,
+  # on CI, we're not making small edits; we're almost always building the entire
+  # project from scratch. Thus, incremental compilation on CI actually
+  # introduces *additional* overhead to support making future builds
+  # faster...but no future builds will ever occur in any given CI environment.
+  #
+  # See https://matklad.github.io/2021/09/04/fast-rust-builds.html#ci-workflow
+  # for details.
+  CARGO_INCREMENTAL: 0
+  # Allow more retries for network requests in cargo (downloading crates) and
+  # rustup (installing toolchains). This should help to reduce flaky CI failures
+  # from transient network timeouts or other issues.
+  CARGO_NET_RETRY: 10
+  RUSTUP_MAX_RETRIES: 10
+  # Don't emit giant backtraces in the CI logs.
+  RUST_BACKTRACE: short
+  RUSTDOCFLAGS: -D warnings
+
+jobs:
+  rust_integration_tests:
+    name: Rust integration tests
+    runs-on: ubuntu-ghcloud
+    steps:
+      - uses: actions/checkout@v4
+      - run: rustup update stable
+      - uses: Swatinem/rust-cache@v2
+        if: github.ref == 'refs/heads/main'
+      - uses: Swatinem/rust-cache@v2
+        if: github.ref != 'refs/heads/main'
+        with:
+          save-if: "false"
+      - run: sudo apt-get install protobuf-compiler
+
+      # Install SCION and run local topology
+      - run: git clone https://github.com/scionproto/scion
+      - run: cd scion
+      - run: ./tools/install_bazel
+      - run: ./tools/install_deps
+      - run: ./scion.sh bazel-remote
+      - run: make
+      - run: ./scion.sh topology -c topology/tiny
+      - run: ./scion.sh run
+      - name: Verify that topology runs correctly
+        run: bin/end2end_integration
+      - run: echo "DAEMON_ADDRESS=$(./scion.sh sciond-addr 112)" >> $GITHUB_ENV
+      - name: Check paths
+        run: bin/scion showpaths --sciond $DAEMON_ADDRESS 1-ff00:0:112
+
+      - name: Run integration tests
+        run: cargo test -- --ignored