re-using dependencies installed in conan

Author: csegarragonz

.github/workflows/tests.yml

@@ -37,8 +37,55 @@ jobs:
       - name: "Check C/C++ formatting changes"
         run: git diff --exit-code
 
+  conan-cache:
+    if: github.event.pull_request.draft == false
+    runs-on: ubuntu-latest
+    env:
+      HOST_TYPE: ci
+      REDIS_QUEUE_HOST: redis
+      REDIS_STATE_HOST: redis
+    container:
+      image: faasm/faabric:0.2.2
+    defaults:
+      run:
+        working-directory: /code/faabric
+    services:
+      redis:
+        image: redis
+    steps:
+      # --- Code update ---
+      - name: "Fetch ref"
+        run: git fetch origin ${GITHUB_REF}:ci-branch
+      - name: "Check out branch"
+        run: git checkout --force ci-branch
+      # --- Set-up ---
+      - name: "Ping redis"
+        run: redis-cli -h redis ping
+      # --- Cache based on Conan version and ExternalProjects cmake source
+      - name: Get Conan version
+        id: get-conan-version
+        run: |
+          echo "::set-output name=conan-version::$(conan --version | tr -d '[:alpha:] ')"
+        shell: bash
+      - name: Hash ExternalProjects
+        id: hash-external
+        run: |
+          echo "::set-output name=hash-external::$(sha256sum cmake/ExternalProjects.cmake | cut '-d ' -f 1)"
+        shell: bash
+      - uses: actions/cache@v2
+        with:
+          path: '~/.conan'
+          key: ${{ runner.os }}-${{ steps.get-conan-version.outputs.conan-version }}-${{ steps.hash-external.outputs.hash-external }}
+          restore-keys: |
+            ${{ runner.os }}-${{ steps.get-conan-version.outputs.conan-version }}-
+            ${{ runner.os }}-
+      # --- Build dependencies
+      - name: "Build dependencies to be shared by all sanitiser runs"
+        run: inv dev.cmake -b Debug
+
   tests:
     if: github.event.pull_request.draft == false
+    needs: [conan-cache]
     runs-on: ubuntu-latest
     env:
       HOST_TYPE: ci
@@ -61,6 +108,24 @@ jobs:
       # --- Set-up ---
       - name: "Ping redis"
         run: redis-cli -h redis ping
+      # --- Cache based on Conan version and ExternalProjects cmake source
+      - name: Get Conan version
+        id: get-conan-version
+        run: |
+          echo "::set-output name=conan-version::$(conan --version | tr -d '[:alpha:] ')"
+        shell: bash
+      - name: Hash ExternalProjects
+        id: hash-external
+        run: |
+          echo "::set-output name=hash-external::$(sha256sum cmake/ExternalProjects.cmake | cut '-d ' -f 1)"
+        shell: bash
+      - uses: actions/cache@v2
+        with:
+          path: '~/.conan'
+          key: ${{ runner.os }}-${{ steps.get-conan-version.outputs.conan-version }}-${{ steps.hash-external.outputs.hash-external }}
+          restore-keys: |
+            ${{ runner.os }}-${{ steps.get-conan-version.outputs.conan-version }}-
+            ${{ runner.os }}-
       # --- Tests build - need a debug build for actually running tests ---
       - name: "Run cmake for tests"
         run: inv dev.cmake --build=Debug
@@ -78,6 +143,16 @@ jobs:
       # --- Code update ---
       - name: "Check out code"
         uses: actions/checkout@v2
+        #       # --- Cache based on Conan version and ExternalProjects cmake source
+        #       - name: "Get Conan version"
+        #         id: get-conan-version
+        #         run: |
+        #           echo "::set-output name=conan-version::$(conan --version | tr -d '[:alpha:] ')"
+        #         shell: bash
+        #       - uses: actions/cache@v2
+        #         with:
+        #           path: '~/.conan'
+        #           key: ${{ runner.os }}-${{ steps.get-conan-version.outputs.conan-version }}-${{ hashFiles('cmake/ExternalProjects.cmake') }}
       # --- Build and test ---
       - name: "Build distributed tests"
         run: ./dist-test/build.sh
@@ -105,6 +180,24 @@ jobs:
         run: git fetch origin ${GITHUB_REF}:ci-branch
       - name: "Check out branch"
         run: git checkout --force ci-branch
+      # --- Cache based on Conan version and ExternalProjects cmake source
+      - name: Get Conan version
+        id: get-conan-version
+        run: |
+          echo "::set-output name=conan-version::$(conan --version | tr -d '[:alpha:] ')"
+        shell: bash
+      - name: Hash ExternalProjects
+        id: hash-external
+        run: |
+          echo "::set-output name=hash-external::$(sha256sum cmake/ExternalProjects.cmake | cut '-d ' -f 1)"
+        shell: bash
+      - uses: actions/cache@v2
+        with:
+          path: '~/.conan'
+          key: ${{ runner.os }}-${{ steps.get-conan-version.outputs.conan-version }}-${{ steps.hash-external.outputs.hash-external }}
+          restore-keys: |
+            ${{ runner.os }}-${{ steps.get-conan-version.outputs.conan-version }}-
+            ${{ runner.os }}-
       # --- Examples ---
       - name: "Run cmake shared"
         run: inv dev.cmake --shared --build=Release