[EXPORTER] Add OTLP HTTP SSL support

.copyright-ignore

@@ -34,6 +34,7 @@
 *.patch
 *.json
 *.nuspec
+*.pem
 
 # Packaging
 */CONTROL

.github/workflows/ci.yml

@@ -29,8 +29,8 @@ jobs:
         sudo -E ./ci/setup_thrift.sh
         ./ci/do_ci.sh cmake.test
 
-  cmake_gcc_maintainer_test:
-    name: CMake gcc 12 (maintainer mode)
+  cmake_gcc_maintainer_sync_test:
+    name: CMake gcc 12 (maintainer mode, sync)
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
@@ -46,16 +46,59 @@ jobs:
         sudo -E ./ci/setup_cmake.sh
         sudo -E ./ci/setup_ci_environment.sh
         sudo -E ./ci/install_protobuf.sh
-    - name: run cmake gcc (maintainer mode)
+    - name: run cmake gcc (maintainer mode, sync)
       env:
         CC: /usr/bin/gcc-12
         CXX: /usr/bin/g++-12
       run: |
         sudo -E ./ci/setup_thrift.sh
-        ./ci/do_ci.sh cmake.maintainer.test
+        ./ci/do_ci.sh cmake.maintainer.sync.test
+    - name: generate test cert
+      env:
+        CFSSL_VERSION: 1.6.3
+      run: |
+        sudo -E ./tools/setup-cfssl.sh
+        (cd ./functional/cert; ./generate_cert.sh)
+    - name: run func test
+      run: |
+        (cd ./functional/otlp; ./run_test.sh)
+
+  cmake_gcc_maintainer_async_test:
+    name: CMake gcc 12 (maintainer mode, async)
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        submodules: 'recursive'
+    - name: setup
+      env:
+        CC: /usr/bin/gcc-12
+        CXX: /usr/bin/g++-12
+        GOOGLETEST_VERSION: 1.12.1
+        PROTOBUF_VERSION: 21.12
+      run: |
+        sudo -E ./ci/setup_cmake.sh
+        sudo -E ./ci/setup_ci_environment.sh
+        sudo -E ./ci/install_protobuf.sh
+    - name: run cmake gcc (maintainer mode, async)
+      env:
+        CC: /usr/bin/gcc-12
+        CXX: /usr/bin/g++-12
+      run: |
+        sudo -E ./ci/setup_thrift.sh
+        ./ci/do_ci.sh cmake.maintainer.async.test
+    - name: generate test cert
+      env:
+        CFSSL_VERSION: 1.6.3
+      run: |
+        sudo -E ./tools/setup-cfssl.sh
+        (cd ./functional/cert; ./generate_cert.sh)
+    - name: run func test
+      run: |
+        (cd ./functional/otlp; ./run_test.sh)
 
-  cmake_clang_maintainer_test:
-    name: CMake clang 14 (maintainer mode)
+  cmake_clang_maintainer_sync_test:
+    name: CMake clang 14 (maintainer mode, sync)
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
@@ -71,13 +114,56 @@ jobs:
         sudo -E ./ci/setup_cmake.sh
         sudo -E ./ci/setup_ci_environment.sh
         sudo -E ./ci/install_protobuf.sh
-    - name: run cmake clang (maintainer mode)
+    - name: run cmake clang (maintainer mode, sync)
       env:
         CC: /usr/bin/clang-14
         CXX: /usr/bin/clang++-14
       run: |
         sudo -E ./ci/setup_thrift.sh
-        ./ci/do_ci.sh cmake.maintainer.test
+        ./ci/do_ci.sh cmake.maintainer.sync.test
+    - name: generate test cert
+      env:
+        CFSSL_VERSION: 1.6.3
+      run: |
+        sudo -E ./tools/setup-cfssl.sh
+        (cd ./functional/cert; ./generate_cert.sh)
+    - name: run func test
+      run: |
+        (cd ./functional/otlp; ./run_test.sh)
+
+  cmake_clang_maintainer_async_test:
+    name: CMake clang 14 (maintainer mode, async)
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        submodules: 'recursive'
+    - name: setup
+      env:
+        CC: /usr/bin/clang-14
+        CXX: /usr/bin/clang++-14
+        GOOGLETEST_VERSION: 1.12.1
+        PROTOBUF_VERSION: 21.12
+      run: |
+        sudo -E ./ci/setup_cmake.sh
+        sudo -E ./ci/setup_ci_environment.sh
+        sudo -E ./ci/install_protobuf.sh
+    - name: run cmake clang (maintainer mode, async)
+      env:
+        CC: /usr/bin/clang-14
+        CXX: /usr/bin/clang++-14
+      run: |
+        sudo -E ./ci/setup_thrift.sh
+        ./ci/do_ci.sh cmake.maintainer.async.test
+    - name: generate test cert
+      env:
+        CFSSL_VERSION: 1.6.3
+      run: |
+        sudo -E ./tools/setup-cfssl.sh
+        (cd ./functional/cert; ./generate_cert.sh)
+    - name: run func test
+      run: |
+        (cd ./functional/otlp; ./run_test.sh)
 
   cmake_msvc_maintainer_test:
     name: CMake msvc (maintainer mode)

.gitignore

@@ -58,3 +58,24 @@ tags
 
 # Temporary dir used when generating semconv
 ./buildscripts/semantic-convention/opentelemetry-specification
+
+# Generated cert keys in functional tests
+functional/cert/ca.csr
+functional/cert/ca.pem
+functional/cert/ca-key.pem
+functional/cert/client_cert.csr
+functional/cert/client_cert.pem
+functional/cert/client_cert-key.pem
+functional/cert/server_cert.csr
+functional/cert/server_cert.pem
+functional/cert/server_cert-key.pem
+functional/cert/ca_b.csr
+functional/cert/ca_b.pem
+functional/cert/ca_b-key.pem
+functional/cert/client_cert_b.csr
+functional/cert/client_cert_b.pem
+functional/cert/client_cert_b-key.pem
+functional/cert/server_cert_b.csr
+functional/cert/server_cert_b.pem
+functional/cert/server_cert_b-key.pem
+functional/cert/unreadable.pem

CHANGELOG.md

@@ -23,6 +23,8 @@ Increment the:
   top level.[#2062](https://github.com/open-telemetry/opentelemetry-cpp/pull/2062)
 * [EXPORTERS]Add `ForceFlush` for `LogRecordExporter` and `SpanExporter`
   [#2000](https://github.com/open-telemetry/opentelemetry-cpp/pull/2000)
+* [EXPORTER] Add OTLP HTTP SSL support
+  [#1793](https://github.com/open-telemetry/opentelemetry-cpp/pull/1793)
 
 Important changes:
 

CMakeLists.txt

@@ -219,8 +219,18 @@ option(
   "Whether to build http client/server examples. Requires WITH_EXAMPLES and CURL"
   OFF)
 
+option(WITH_FUNC_TESTS "Whether to build functional tests" ON)
+
 option(WITH_LOGS_PREVIEW "Whether to build logs preview" OFF)
 option(WITH_ASYNC_EXPORT_PREVIEW "Whether to enable async export" OFF)
+
+# EXPERIMENTAL
+option(WITH_OTLP_HTTP_SSL_PREVIEW "Whether to enable otlp http ssl export" OFF)
+
+# EXPERIMENTAL
+option(WITH_OTLP_HTTP_SSL_TLS_PREVIEW
+       "Whether to enable otlp http ssl tls min/max/cipher options" OFF)
+
 # Exemplar specs status is experimental, so behind feature flag by default
 option(WITH_METRICS_EXEMPLAR_PREVIEW
        "Whether to enable exemplar within metrics" OFF)
@@ -233,6 +243,13 @@ if(WITH_EXAMPLES_HTTP AND NOT WITH_EXAMPLES)
   message(FATAL_ERROR "WITH_EXAMPLES_HTTP=ON requires WITH_EXAMPLES=ON")
 endif()
 
+if(WITH_OTLP_HTTP_SSL_TLS_PREVIEW AND NOT WITH_OTLP_HTTP_SSL_PREVIEW)
+  message(
+    FATAL_ERROR
+      "WITH_OTLP_HTTP_SSL_TLS_PREVIEW=ON requires WITH_OTLP_HTTP_SSL_PREVIEW=ON"
+  )
+endif()
+
 find_package(Threads)
 
 function(install_windows_deps)
@@ -584,6 +601,9 @@ if(NOT WITH_API_ONLY)
   if(WITH_EXAMPLES)
     add_subdirectory(examples)
   endif()
+  if(WITH_FUNC_TESTS)
+    add_subdirectory(functional)
+  endif()
 endif()
 
 if(OPENTELEMETRY_INSTALL)

api/CMakeLists.txt

@@ -98,6 +98,16 @@ if(WITH_ASYNC_EXPORT_PREVIEW)
   target_compile_definitions(opentelemetry_api INTERFACE ENABLE_ASYNC_EXPORT)
 endif()
 
+# A better place should be in sdk, not api
+if(WITH_OTLP_HTTP_SSL_PREVIEW)
+  target_compile_definitions(opentelemetry_api INTERFACE ENABLE_OTLP_HTTP_SSL)
+
+  if(WITH_OTLP_HTTP_SSL_TLS_PREVIEW)
+    target_compile_definitions(opentelemetry_api
+                               INTERFACE ENABLE_OTLP_HTTP_SSL_TLS)
+  endif()
+endif()
+
 if(WITH_METRICS_EXEMPLAR_PREVIEW)
   target_compile_definitions(opentelemetry_api
                              INTERFACE ENABLE_METRICS_EXEMPLAR_PREVIEW)

ci/do_ci.sh

@@ -90,12 +90,38 @@ if [[ "$1" == "cmake.test" ]]; then
   make
   make test
   exit 0
-elif [[ "$1" == "cmake.maintainer.test" ]]; then
+elif [[ "$1" == "cmake.maintainer.sync.test" ]]; then
   cd "${BUILD_DIR}"
   rm -rf *
   cmake -DCMAKE_BUILD_TYPE=Debug  \
         -DWITH_OTLP=ON \
         -DWITH_OTLP_HTTP=ON \
+        -DWITH_OTLP_HTTP_SSL_PREVIEW=ON \
+        -DWITH_OTLP_HTTP_SSL_TLS_PREVIEW=ON \
+        -DWITH_PROMETHEUS=ON \
+        -DWITH_EXAMPLES=ON \
+        -DWITH_EXAMPLES_HTTP=ON \
+        -DWITH_ZIPKIN=ON \
+        -DWITH_JAEGER=OFF \
+        -DBUILD_W3CTRACECONTEXT_TEST=ON \
+        -DWITH_ELASTICSEARCH=ON \
+        -DWITH_LOGS_PREVIEW=ON \
+        -DWITH_METRICS_EXEMPLAR_PREVIEW=ON \
+        -DWITH_ASYNC_EXPORT_PREVIEW=OFF \
+        -DOTELCPP_MAINTAINER_MODE=ON \
+        -DWITH_NO_DEPRECATED_CODE=ON \
+        "${SRC_DIR}"
+  make -k
+  make test
+  exit 0
+elif [[ "$1" == "cmake.maintainer.async.test" ]]; then
+  cd "${BUILD_DIR}"
+  rm -rf *
+  cmake -DCMAKE_BUILD_TYPE=Debug  \
+        -DWITH_OTLP=ON \
+        -DWITH_OTLP_HTTP=ON \
+        -DWITH_OTLP_HTTP_SSL_PREVIEW=ON \
+        -DWITH_OTLP_HTTP_SSL_TLS_PREVIEW=ON \
         -DWITH_PROMETHEUS=ON \
         -DWITH_EXAMPLES=ON \
         -DWITH_EXAMPLES_HTTP=ON \