[BUILD] Add support for bzlmod

.github/workflows/ci.yml

@@ -537,6 +537,27 @@ jobs:
     - name: run tests
       run: ./ci/do_ci.sh bazel.test
 
+  bazel_no_bzlmod_test:
+    name: Bazel without bzlmod
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        submodules: 'recursive'
+    - name: Mount Bazel Cache
+      uses: actions/cache@v4
+      env:
+        cache-name: bazel_cache
+      with:
+        path: /home/runner/.cache/bazel
+        key: bazel_test
+    - name: setup
+      run: |
+        sudo ./ci/setup_ci_environment.sh
+        sudo ./ci/install_bazelisk.sh
+    - name: run tests
+      run: ./ci/do_ci.sh bazel.no_bzlmod.test
+
   bazel_test_async:
     name: Bazel with async export
     runs-on: ubuntu-latest

.gitignore

@@ -37,6 +37,7 @@
 *.app
 
 # Bazel files
+MODULE.bazel.lock
 /bazel-*
 
 # Mac

MODULE.bazel

@@ -0,0 +1,25 @@
+# Copyright The OpenTelemetry Authors
+# SPDX-License-Identifier: Apache-2.0
+
+module(
+    name = "opentelemetry-cpp",
+    version = "0",
+    compatibility_level = 0,
+    repo_name = "io_opentelemetry_cpp",
+)
+
+bazel_dep(name = "abseil-cpp", version = "20240116.1", repo_name = "com_google_absl")
+bazel_dep(name = "bazel_skylib", version = "1.5.0")
+bazel_dep(name = "curl", version = "8.4.0")
+bazel_dep(name = "grpc", version = "1.62.1", repo_name = "com_github_grpc_grpc")
+bazel_dep(name = "nlohmann_json", version = "3.11.3", repo_name = "github_nlohmann_json")
+bazel_dep(name = "opentelemetry-proto", version = "1.3.1", repo_name = "com_github_opentelemetry_proto")
+bazel_dep(name = "opentracing-cpp", version = "1.6.0", repo_name = "com_github_opentracing")
+bazel_dep(name = "platforms", version = "0.0.8")
+bazel_dep(name = "prometheus-cpp", version = "1.2.4", repo_name = "com_github_jupp0r_prometheus_cpp")
+bazel_dep(name = "protobuf", version = "26.0", repo_name = "com_google_protobuf")
+bazel_dep(name = "rules_proto", version = "5.3.0-21.7")
+bazel_dep(name = "zlib", version = "1.3.1.bcr.1")
+
+bazel_dep(name = "google_benchmark", version = "1.8.3", dev_dependency = True, repo_name = "com_github_google_benchmark")
+bazel_dep(name = "googletest", version = "1.14.0.bcr.1", dev_dependency = True, repo_name = "com_google_googletest")

WORKSPACE.bzlmod

@@ -0,0 +1,4 @@
+# Copyright The OpenTelemetry Authors
+# SPDX-License-Identifier: Apache-2.0
+
+# Disables the default WORKSPACE when using bzlmod

ci/do_ci.sh

@@ -459,6 +459,10 @@ EOF
   make load_plugin_example
   examples/plugin/load/load_plugin_example ${PLUGIN_DIR}/libexample_plugin.so /dev/null
   exit 0
+elif [[ "$1" == "bazel.no_bzlmod.test" ]]; then
+  bazel $BAZEL_STARTUP_OPTIONS build --enable_bzlmod=false $BAZEL_OPTIONS //...
+  bazel $BAZEL_STARTUP_OPTIONS test --enable_bzlmod=false $BAZEL_TEST_OPTIONS //...
+  exit 0
 elif [[ "$1" == "bazel.test" ]]; then
   bazel $BAZEL_STARTUP_OPTIONS build $BAZEL_OPTIONS //...
   bazel $BAZEL_STARTUP_OPTIONS test $BAZEL_TEST_OPTIONS //...