Merge branch 'master' into network

.bazelversion

@@ -1 +1 @@
-1.2.0
+3.3.0

.github/.codecov.yaml

@@ -0,0 +1,28 @@
+codecov:
+  require_ci_to_pass: yes
+  max_report_age: off
+
+coverage:
+  precision: 2
+  round: down
+  range: "80...100"
+
+parsers:
+  gcov:
+    branch_detection:
+      conditional: yes
+      loop: yes
+      method: no
+      macro: no
+
+comment:
+  layout: "reach,diff,flags,tree"
+  behavior: default
+  require_changes: no
+
+# Relative file path fixing.
+# CI file paths must match Git file paths.
+# This fix removes the "/home/runner/" prefix 
+# to coverage report file paths.
+fixes:
+  - "/home/runner/::"

.github/CODEOWNERS

@@ -2,4 +2,4 @@
 # This file controls who is tagged for review for any given pull request.
 
 # For anything not explicitly taken by someone else:
-*       @g-easy @jmacd @maxgolov @reyang @rnburn @tigrannajaryan
+*       @open-telemetry/cpp-approvers

.github/workflows/ci.yml

@@ -0,0 +1,200 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  cmake_test:
+    name: CMake test
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: setup
+      run: |
+        sudo ./ci/setup_cmake.sh
+        sudo ./ci/setup_ci_environment.sh
+    - name: run tests
+      run: ./ci/do_ci.sh cmake.test
+
+  cmake_test_cxx20:
+    name: CMake C++20 test
+    runs-on: ubuntu-20.04
+    steps:
+    - uses: actions/checkout@v2
+    - name: setup
+      run: |
+        sudo ./ci/setup_ci_environment.sh
+        sudo ./ci/setup_cmake.sh
+    - name: run tests
+      run: ./ci/do_ci.sh cmake.c++20.test
+
+  plugin_test:
+    name: Plugin -> CMake
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: setup
+      run: |
+        sudo ./ci/setup_cmake.sh
+        sudo ./ci/setup_ci_environment.sh
+    - name: run tests
+      run: ./ci/do_ci.sh cmake.test_example_plugin
+
+  gcc_48_test:
+    name: Legacy Bazel
+    runs-on: ubuntu-18.04
+    steps:
+    - uses: actions/checkout@v2
+    - name: setup
+      run: |
+        sudo ./ci/setup_ci_environment.sh
+        sudo ./ci/install_bazelisk.sh
+        sudo ./ci/install_gcc48.sh
+    - name: run tests
+      run: ./ci/do_ci.sh bazel.legacy.test
+
+  bazel_test:
+    name: Bazel
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: setup
+      run: |
+        sudo ./ci/setup_cmake.sh
+        sudo ./ci/setup_ci_environment.sh
+        sudo ./ci/install_bazelisk.sh
+    - name: run tests
+      run: ./ci/do_ci.sh bazel.test
+
+  bazel_noexcept:
+    name: Bazel noexcept
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: setup
+      run: |
+        sudo ./ci/setup_cmake.sh
+        sudo ./ci/setup_ci_environment.sh
+        sudo ./ci/install_bazelisk.sh
+    - name: run tests
+      run: ./ci/do_ci.sh bazel.noexcept
+
+  bazel_asan:
+    name: Bazel asan config
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: setup
+      run: |
+        sudo ./ci/setup_cmake.sh
+        sudo ./ci/setup_ci_environment.sh
+        sudo ./ci/install_bazelisk.sh
+    - name: run tests
+      run: ./ci/do_ci.sh bazel.asan
+
+  bazel_tsan:
+    name: Bazel tsan config
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: setup
+      run: |
+        sudo ./ci/setup_cmake.sh
+        sudo ./ci/setup_ci_environment.sh
+        sudo ./ci/install_bazelisk.sh
+    - name: run tests
+      run: ./ci/do_ci.sh bazel.tsan
+
+  benchmark:
+    name: Benchmark
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: setup
+      run: |
+        sudo ./ci/setup_cmake.sh
+        sudo ./ci/setup_ci_environment.sh
+        sudo ./ci/install_bazelisk.sh
+    - name: run tests
+      run: |
+        env BENCHMARK_DIR=/benchmark
+        ./ci/do_ci.sh benchmark
+    - name: Upload benchmark results
+      uses: actions/upload-artifact@v2
+      with:
+        name: benchmark_reports
+        path: /home/runner/benchmark
+
+  format:
+    name: Format
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: setup
+      run: sudo ./ci/install_format_tools.sh
+    - name: run tests
+      run: ./ci/do_ci.sh format
+
+  osx_test:
+    name: Bazel on MacOS
+    runs-on: macos-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: run tests
+      run: ./ci/do_ci.sh bazel.test
+
+  windows:
+    name: CMake -> exporter proto
+    runs-on: windows-2019
+    steps:
+    - uses: actions/checkout@v2
+    - name: setup
+      run: |
+        ./ci/setup_windows_cmake.ps1
+        ./ci/setup_windows_ci_environment.ps1
+        ./ci/install_windows_protobuf.ps1
+    - name: run cmake test
+      run: ./ci/do_ci.ps1 cmake.test
+    - name: run otprotocol test
+      run: ./ci/do_ci.ps1 cmake.exporter.otprotocol.test
+
+  windows_bazel:
+    name: Bazel Windows
+    runs-on: windows-2019
+    steps:
+    - uses: actions/checkout@v2
+    - name: setup
+      run: ./ci/install_windows_bazelisk.ps1
+    - name: run tests
+      run: ./ci/do_ci.ps1 bazel.build
+
+  windows_plugin_test:
+    name: Plugin -> CMake Windows
+    runs-on: windows-2019
+    steps:
+    - uses: actions/checkout@v2
+    - name: setup
+      run: |
+        ./ci/setup_windows_cmake.ps1
+        ./ci/setup_windows_ci_environment.ps1
+    - name: run tests
+      run: ./ci/do_ci.ps1 cmake.test_example_plugin
+
+  code_coverage:
+    name: Code coverage
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: setup
+      run: |
+        sudo ./ci/setup_cmake.sh
+        sudo ./ci/setup_ci_environment.sh
+    - name: run tests and generate report
+      run: ./ci/do_ci.sh code.coverage
+    - name: upload report
+      uses: codecov/codecov-action@v1
+      with:
+        file: /home/runner/build/coverage.info

CMakeLists.txt

@@ -6,7 +6,9 @@ cmake_policy(SET CMP0057 NEW)
 
 project(opentelemetry-cpp)
 
-set(CMAKE_CXX_STANDARD 11)
+if(NOT DEFINED CMAKE_CXX_STANDARD)
+  set(CMAKE_CXX_STANDARD 11)
+endif()
 
 option(WITH_SDK "Whether to build the SDK or just the API" ON)
 option(WITH_OTPROTOCOL
@@ -24,6 +26,13 @@ include(CTest)
 
 find_package(Threads)
 
+if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
+  # Options for Visual C++ compiler: /Zc:__cplusplus - report an updated value
+  # for recent C++ language standards. Without this option MSVC returns the
+  # value of __cplusplus="199711L"
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /Zc:__cplusplus")
+endif()
+
 if(WITH_SDK AND WITH_PROTOBUF)
   set(protobuf_MODULE_COMPATIBLE ON)
   find_package(Protobuf CONFIG NAMES protobuf)