WIP: OpenTelemetry integration refactoring

.github/workflows/columnar.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Install build environment
         run: |
           sudo apt-get update -y
-          sudo apt-get install -y libssl-dev cmake gcc g++ curl gdb
+          sudo apt-get install -y libssl-dev cmake gcc g++ curl gdb libcurl4-openssl-dev libprotobuf-dev libgrpc-dev gdb
       - uses: actions/checkout@v4
         with:
           submodules: recursive

.github/workflows/linters.yml

@@ -38,7 +38,7 @@ jobs:
       - name: Install dependencies
         run: |
           sudo apt-get update -y
-          sudo apt-get install -y libssl-dev cmake curl wget gnupg2
+          sudo apt-get install -y libssl-dev cmake curl wget gnupg2 libcurl4-openssl-dev libprotobuf-dev libgrpc-dev gdb
           wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
           sudo bash -c "echo 'deb https://apt.llvm.org/noble/ llvm-toolchain-noble main' >> /etc/apt/sources.list"
           sudo apt-get update -y
@@ -65,7 +65,7 @@ jobs:
       - name: Install dependencies
         run: |
           sudo apt-get update -y
-          sudo apt-get install -y libssl-dev cmake curl wget gnupg2 clang clang-tools cppcheck
+          sudo apt-get install -y libssl-dev cmake curl wget gnupg2 clang clang-tools cppcheck libcurl4-openssl-dev libprotobuf-dev libgrpc-dev gdb
       - name: Run cppcheck
         run: ./bin/check-cppcheck
 
@@ -78,6 +78,6 @@ jobs:
       - name: Install dependencies
         run: |
           sudo apt-get update -y
-          sudo apt-get install -y libssl-dev cmake curl wget gnupg2 clang clang-tools clang-tidy
+          sudo apt-get install -y libssl-dev cmake curl wget gnupg2 clang clang-tools clang-tidy libcurl4-openssl-dev libprotobuf-dev libgrpc-dev gdb
       - name: Run cppcheck
         run: ./bin/check-clang-tidy

.github/workflows/sanitizers.yml

@@ -40,7 +40,7 @@ jobs:
       - name: Install dependencies
         run: |
           sudo apt-get update -y
-          sudo apt-get install -y libssl-dev cmake curl wget gnupg2 gdb clang clang-tools valgrind
+          sudo apt-get install -y libssl-dev cmake curl wget gnupg2 libcurl4-openssl-dev libprotobuf-dev libgrpc-dev gdb clang clang-tools valgrind
       - uses: actions/checkout@v4
         with:
           submodules: recursive

.github/workflows/tests.yml

@@ -41,7 +41,7 @@ jobs:
       - name: Install build environment
         run: |
           sudo apt-get update -y
-          sudo apt-get install -y libssl-dev cmake gcc g++ curl gdb
+          sudo apt-get install -y libssl-dev cmake gcc g++ curl libcurl4-openssl-dev libprotobuf-dev libgrpc-dev gdb
       - uses: actions/checkout@v4
         with:
           submodules: recursive

CMakeLists.txt

@@ -493,6 +493,8 @@ if(WIN32 OR NOT COUCHBASE_CXX_CLIENT_BUILD_SHARED)
   set(COUCHBASE_CXX_CLIENT_VARIANT couchbase_cxx_client_static)
 endif()
 
+add_subdirectory(observability)
+
 foreach(TARGET ${couchbase_cxx_client_LIBRARIES})
   include(cmake/DetectStandardFilesystem.cmake)
   couchbase_cxx_check_filesystem(
@@ -536,6 +538,10 @@ foreach(TARGET ${couchbase_cxx_client_LIBRARIES})
             couchbase_backtrace
             hdr_histogram_static)
 
+  target_link_libraries(
+    ${TARGET}
+    PUBLIC couchbase_observability)
+
   if(WIN32)
     target_link_libraries(${TARGET} PRIVATE iphlpapi)
   endif()

cmake/ThirdPartyDependencies.cmake

@@ -40,6 +40,32 @@ if(NOT TARGET spdlog::spdlog)
     "SPDLOG_FMT_EXTERNAL OFF")
 endif()
 
+if(NOT TARGET opentelemetry_api)
+  # https://github.com/open-telemetry/opentelemetry-cpp/releases
+  cpmaddpackage(
+    NAME
+    opentelemetry_api
+    VERSION
+    1.20.0
+    GITHUB_REPOSITORY
+    "open-telemetry/opentelemetry-cpp"
+    EXCLUDE_FROM_ALL ON
+    OPTIONS
+    "OPENTELEMETRY_INSTALL OFF"
+    "WITH_ABI_VERSION_1 OFF"
+    "WITH_ABI_VERSION_2 ON"
+    "WITH_STL ON"
+    "WITH_ABSEIL OFF"
+    "WITH_OTLP_HTTP ON"
+    "WITH_OTLP_GRPC OFF"
+    "WITH_BENCHMARK OFF"
+    "BUILD_TESTING OFF"
+    "BUILD_SHARED_LIBS OFF"
+    "CMAKE_C_VISIBILITY_PRESET hidden"
+    "CMAKE_CXX_VISIBILITY_PRESET hidden"
+    "CMAKE_POSITION_INDEPENDENT_CODE ON")
+endif()
+
 if(NOT TARGET Microsoft.GSL::GSL)
   # https://github.com/microsoft/GSL/releases
   cpmaddpackage(