Add bazel.noexcept to CI. (gabime#41)

This is to ensure OpenTelemetry works without exception handling.

.circleci/config.yml

@@ -54,6 +54,16 @@ jobs:
       - run: ./ci/install_bazelisk.sh
       - run: ./ci/do_ci.sh bazel.test
 
+  bazel_noexcept:
+    resource_class: xlarge
+    docker:
+      - image: ubuntu:18.04
+    steps:
+      - checkout
+      - run: ./ci/setup_ci_environment.sh
+      - run: ./ci/install_bazelisk.sh
+      - run: ./ci/do_ci.sh bazel.noexcept
+
   bazel_asan:
     resource_class: xlarge
     docker:
@@ -119,6 +129,7 @@ workflows:
       - plugin_test
       - gcc_48_test
       - bazel_test
+      - bazel_noexcept
       - bazel_asan
       - format
       - benchmark

api/include/opentelemetry/plugin/detail/utility.h

@@ -12,16 +12,20 @@ namespace plugin
 namespace detail
 {
 inline void CopyErrorMessage(const char *source, std::string &destination) noexcept
+#if __EXCEPTIONS
 try
+#endif
 {
   if (source == nullptr)
   {
     return;
   }
   destination.assign(source);
 }
+#if __EXCEPTIONS
 catch (const std::bad_alloc &)
 {}
+#endif
 }  // namespace detail
 }  // namespace plugin
 }  // namespace opentelemetry

ci/README.md

@@ -5,6 +5,7 @@ CI tests can be run on docker by invoking the script `./ci/run_docker.sh ./ci/do
 * `cmake.test`: build cmake targets and run tests.
 * `cmake.test_example_plugin`: build and test an example OpenTelemetry plugin.
 * `bazel.test`: build bazel targets and run tests.
+* `bazel.noexcept`: build bazel targets and run tests with exceptions disabled.
 * `bazel.asan`: build bazel targets and run tests with AddressSanitizer.
 * `benchmark`: run all benchmarks.
 * `format`: use `tools/format.sh` to enforce text formatting.

ci/do_ci.sh

@@ -55,9 +55,13 @@ EOF
   examples/plugin/load/load_plugin_example ${PLUGIN_DIR}/libexample_plugin.so /dev/null
   exit 0
 elif [[ "$1" == "bazel.test" ]]; then
-  bazel build $BAZEL_OPTIONS -- //...
+  bazel build $BAZEL_OPTIONS //...
   bazel test $BAZEL_TEST_OPTIONS //...
   exit 0
+elif [[ "$1" == "bazel.noexcept" ]]; then
+  bazel build --copt=-fno-exceptions $BAZEL_OPTIONS //...
+  bazel test --copt=-fno-exceptions $BAZEL_TEST_OPTIONS //...
+  exit 0
 elif [[ "$1" == "bazel.asan" ]]; then
   bazel test --config=asan $BAZEL_TEST_OPTIONS //...
   exit 0