ci: Add reusable vcpkg workflow

.github/workflows/ci-vcpkg.yml

@@ -0,0 +1,73 @@
+name: vcpkg
+
+on:
+  workflow_call:
+    inputs:
+      working-directory:
+        required: true
+        type: string
+
+jobs:
+  build:
+    name: ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu-26.04
+          - Windows-2025
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+        with:
+          persist-credentials: false
+      - name: Install system deps [Linux]
+        if: runner.os == 'Linux'
+        run: |
+          sudo apt update -y
+          sudo apt install -y --no-install-recommends --no-install-suggests \
+            cmake ninja-build pkg-config
+      - name: Install system deps [Windows]
+        if: runner.os == 'Windows'
+        run: |
+          choco install cmake --installargs 'ADD_CMAKE_TO_PATH=System' -y
+      - name: Clone vcpkg
+        shell: bash
+        run: |
+          git clone https://github.com/microsoft/vcpkg.git "${GITHUB_WORKSPACE}/vcpkg"
+      - name: Bootstrap vcpkg [Linux]
+        if: runner.os == 'Linux'
+        run: |
+          cd "${GITHUB_WORKSPACE}/vcpkg"
+          ./bootstrap-vcpkg.sh
+      - name: Bootstrap vcpkg [Windows]
+        if: runner.os == 'Windows'
+        run: |
+          cd "${{ github.workspace }}\\vcpkg"
+          .\\bootstrap-vcpkg.bat
+      - name: Install dependencies from manifest
+        working-directory: ${{ inputs.working-directory }}
+        shell: bash
+        run: |
+          "${GITHUB_WORKSPACE}/vcpkg/vcpkg" install
+      - name: Configure (CMake + vcpkg toolchain) [Linux]
+        if: runner.os == 'Linux'
+        working-directory: ${{ inputs.working-directory }}
+        shell: pwsh
+        run: |
+          $toolchain = "$env:GITHUB_WORKSPACE/vcpkg/scripts/buildsystems/vcpkg.cmake"
+          cmake -S . -B .cmake-build -G Ninja "-DCMAKE_TOOLCHAIN_FILE=$toolchain" -DCMAKE_BUILD_TYPE=DebugDebug
+      - name: Configure (CMake + vcpkg toolchain) [Windows]
+        if: runner.os == 'Windows'
+        working-directory: ${{ inputs.working-directory }}
+        shell: pwsh
+        run: |
+          $toolchain = "$env:GITHUB_WORKSPACE/vcpkg/scripts/buildsystems/vcpkg.cmake"
+          cmake -S . -B .cmake-build "-DCMAKE_TOOLCHAIN_FILE=$toolchain" -DCMAKE_BUILD_TYPE=Debug
+      - name: Build
+        working-directory: ${{ inputs.working-directory }}
+        run: cmake --build .cmake-build -j"$(nproc)"
+      - name: Test
+        working-directory: ${{ inputs.working-directory }}
+        run: ctest --test-dir .cmake-build -VV

.github/workflows/prometheus.yml

@@ -7,12 +7,14 @@ on:
       - 'main'
     paths:
       - "exporters/prometheus/**"
+      - '.github/workflows/ci-*.yml'
       - ".github/workflows/prometheus.yml"
   pull_request:
     branches:
       - 'main'
     paths:
       - "exporters/prometheus/**"
+      - '.github/workflows/ci-*.yml'
       - ".github/workflows/prometheus.yml"
 
 permissions:
@@ -136,3 +138,8 @@ jobs:
             -DCMAKE_BUILD_TYPE=Debug
           cmake --build . -j$(nproc)
           ctest -VV -R "opentelemetry_cpp_ecosystem_test.*" .
+
+  vcpkg:
+    uses: $/.github/workflows/ci-vcpkg.yml
+    with:
+      working-directory: "exporters/prometheus"

exporters/prometheus/CMakeLists.txt

@@ -66,8 +66,7 @@ endif()
 include_directories(include)
 include(CMakeDependentOption)
 
-cmake_dependent_option(BUILD_TESTING "Enable tests" ON
-                       "NOT CMAKE_CROSSCOMPILING" OFF)
+option(BUILD_TESTING "Enable tests" ON)
 
 if(BUILD_TESTING)
   enable_testing()

exporters/prometheus/test/push_exporter_test.cc

@@ -29,7 +29,10 @@ namespace metrics
 class PrometheusPushExporterTest
 {  // : public ::testing::Test
 public:
-  PrometheusPushExporter GetExporter() { return PrometheusPushExporter(); }
+  std::unique_ptr<PrometheusPushExporter> GetExporter() {
+    PrometheusPushExporterOptions opts{};
+    return std::make_unique<PrometheusPushExporter>(opts);
+  }
 
   void CheckFactory(PrometheusPushExporter &exporter, const PrometheusPushExporterOptions &options)
   {
@@ -55,10 +58,10 @@ using opentelemetry::exporter::metrics::PrometheusPushExporterTest;
 TEST(PrometheusPushExporter, InitializeConstructorIsNotShutdown)
 {
   PrometheusPushExporterTest p;
-  PrometheusPushExporter exporter = p.GetExporter();
+  auto exporter = p.GetExporter();
 
   // // Asserts that the exporter is not shutdown.
-  ASSERT_TRUE(!exporter.IsShutdown());
+  ASSERT_TRUE(!exporter->IsShutdown());
 }
 
 /**
@@ -67,19 +70,19 @@ TEST(PrometheusPushExporter, InitializeConstructorIsNotShutdown)
 TEST(PrometheusPushExporter, ShutdownSetsIsShutdownToTrue)
 {
   PrometheusPushExporterTest p;
-  PrometheusPushExporter exporter = p.GetExporter();
+  auto exporter = p.GetExporter();
 
   // exporter shuold not be shutdown by default
-  ASSERT_TRUE(!exporter.IsShutdown());
+  ASSERT_TRUE(!exporter->IsShutdown());
 
-  exporter.Shutdown();
+  exporter->Shutdown();
 
   // the exporter shuold be shutdown
-  ASSERT_TRUE(exporter.IsShutdown());
+  ASSERT_TRUE(exporter->IsShutdown());
 
   // shutdown function should be idempotent
-  exporter.Shutdown();
-  ASSERT_TRUE(exporter.IsShutdown());
+  exporter->Shutdown();
+  ASSERT_TRUE(exporter->IsShutdown());
 }
 
 /**
@@ -89,15 +92,15 @@ TEST(PrometheusPushExporter, ShutdownSetsIsShutdownToTrue)
 TEST(PrometheusPushExporter, ExportSuccessfully)
 {
   PrometheusPushExporterTest p;
-  PrometheusPushExporter exporter = p.GetExporter();
+  auto exporter = p.GetExporter();
 
   auto instrumentation_scope =
       opentelemetry::sdk::instrumentationscope::InstrumentationScope::Create("library_name",
                                                                              "1.9.1");
 
   auto data = CreateSumPointData(instrumentation_scope.get());
 
-  auto res = exporter.Export(data);
+  auto res = exporter->Export(data);
 
   // result should be kSuccess = 0
   ExportResult code = ExportResult::kSuccess;
@@ -111,9 +114,9 @@ TEST(PrometheusPushExporter, ExportSuccessfully)
 TEST(PrometheusPushExporter, ExporterIsShutdown)
 {
   PrometheusPushExporterTest p;
-  PrometheusPushExporter exporter = p.GetExporter();
+  auto exporter = p.GetExporter();
 
-  exporter.Shutdown();
+  exporter->Shutdown();
 
   auto instrumentation_scope =
       opentelemetry::sdk::instrumentationscope::InstrumentationScope::Create("library_name",
@@ -122,7 +125,7 @@ TEST(PrometheusPushExporter, ExporterIsShutdown)
   auto data = CreateSumPointData(instrumentation_scope.get());
 
   // send export request after shutdown
-  auto res = exporter.Export(data);
+  auto res = exporter->Export(data);
 
   // result code should be kFailure = 1
   ExportResult code = ExportResult::kFailure;
@@ -138,13 +141,13 @@ TEST(PrometheusPushExporter, ExporterIsShutdown)
 TEST(PrometheusPushExporter, CollectionNotEnoughSpace)
 {
   PrometheusPushExporterTest p;
-  PrometheusPushExporter exporter = p.GetExporter();
+  auto exporter = p.GetExporter();
 
   // prepare two collections of records to export,
   // one close to max size and another one that, when added
   // to the first, will exceed the size of the collection
 
-  int max_collection_size = exporter.GetMaxCollectionSize();
+  int max_collection_size = exporter->GetMaxCollectionSize();
 
   auto instrumentation_scope =
       opentelemetry::sdk::instrumentationscope::InstrumentationScope::Create("library_name",
@@ -159,15 +162,15 @@ TEST(PrometheusPushExporter, CollectionNotEnoughSpace)
   for (int count = 1; count <= max_collection_size; count += 2)
   {
     auto data = CreateSumPointData(instrumentation_scope.get());
-    auto res  = exporter.Export(data);
+    auto res  = exporter->Export(data);
     ASSERT_EQ(res, code);
   }
 
   auto data = CreateSumPointData(instrumentation_scope.get());
 
   // send export request that does not complete
   // due to not enough space in the collection
-  auto res = exporter.Export(data);
+  auto res = exporter->Export(data);
 
   // the result code should be kFailureFull = 2
   code = ExportResult::kFailureFull;
@@ -182,14 +185,14 @@ TEST(PrometheusPushExporter, CollectionNotEnoughSpace)
 TEST(PrometheusPushExporter, InvalidArgumentWhenPassedEmptyRecordCollection)
 {
   PrometheusPushExporterTest p;
-  PrometheusPushExporter exporter = p.GetExporter();
+  auto exporter = p.GetExporter();
 
   // Initializes an empty colelction of records
   metric_sdk::ResourceMetrics data;
 
   // send export request to fill the
   // collection in the collector
-  auto res = exporter.Export(data);
+  auto res = exporter->Export(data);
 
   // the result code should be kFailureInvalidArgument = 3
   ExportResult code = ExportResult::kFailureInvalidArgument;

exporters/prometheus/vcpkg.json

@@ -0,0 +1,32 @@
+{
+  "name": "otel-prometheus-exporter",
+  "version-string": "1.19.0",
+  "dependencies": [
+    {
+      "name": "opentelemetry-cpp",
+      "features": [
+        "prometheus"
+      ]
+    },
+    {
+      "name": "prometheus-cpp",
+      "features": [
+        "pull",
+        "push"
+      ]
+    },
+    "nlohmann-json",
+    "gtest",
+    "benchmark",
+    "curl",
+    "openssl",
+    "zlib"
+  ],
+  "overrides": [
+    {
+      "name": "opentelemetry-cpp",
+      "version": "1.28.0"
+    }
+  ],
+  "builtin-baseline": "b4ae67c6051bb665f9414fca5c66f66cacc71970"
+}