[PINS] Add Bazel support for external projects

.bazelversion

@@ -0,0 +1 @@
+4.0.0

.gitignore

@@ -61,3 +61,6 @@ stamp-h1
 ###############
 common/swssloglevel
 tests/tests
+
+# Bazel Build System #
+/bazel-*

BUILD

@@ -0,0 +1,31 @@
+package(default_visibility = ["//visibility:public"])
+
+exports_files(["LICENSE"])
+
+cc_library(
+    name = "common",
+    srcs = glob(["common/*.cpp"], exclude=["common/loglevel.cpp"]),
+    hdrs = glob([
+        "common/*.h",
+        "common/*.hpp",
+    ]),
+    copts = [
+        "-I/usr/include/libnl3", # Expected location in the SONiC build container"
+    ],
+    includes = [
+        "common",
+    ],
+    linkopts = ["-lpthread -lhiredis -lnl-genl-3 -lnl-nf-3 -lnl-route-3 -lnl-3"],
+    visibility = ["//visibility:public"],
+)
+
+cc_library(
+    name = "libswsscommon",
+    hdrs = glob([
+        "common/*.h",
+        "common/*.hpp",
+    ]),
+    include_prefix = "swss",
+    strip_include_prefix = "common",
+    deps = [":common"],
+)

WORKSPACE

@@ -0,0 +1,31 @@
+workspace(name = "sonic_swss_common")
+
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+http_archive(
+    name = "com_google_absl",
+    sha256 = "b3744a4f7a249d5eaf2309daad597631ce77ea62e0fc6abffbab4b4c3dc0fc08",
+    strip_prefix = "abseil-cpp-20200923",
+    url = "https://github.com/abseil/abseil-cpp/archive/20200923.tar.gz",
+)
+
+http_archive(
+    name = "com_google_googletest",
+    sha256 = "9dc9157a9a1551ec7a7e43daea9a694a0bb5fb8bec81235d8a1e6ef64c716dcb",
+    strip_prefix = "googletest-release-1.10.0",
+    urls = ["https://github.com/google/googletest/archive/release-1.10.0.tar.gz"],
+)
+
+http_archive(
+    name = "com_github_google_glog",
+    sha256 = "f28359aeba12f30d73d9e4711ef356dc842886968112162bc73002645139c39c",
+    strip_prefix = "glog-0.4.0",
+    url = "https://github.com/google/glog/archive/v0.4.0.tar.gz",
+)
+
+http_archive(
+    name = "com_github_gflags_gflags",
+    sha256 = "34af2f15cf7367513b352bdcd2493ab14ce43692d2dcd9dfc499492966c64dcf",
+    strip_prefix = "gflags-2.2.2",
+    url = "https://github.com/gflags/gflags/archive/v2.2.2.tar.gz",
+)

azure-pipelines.yml

@@ -41,11 +41,20 @@ stages:
         sudo apt-get install -y python
         sudo apt-get install cmake libgtest-dev libgmock-dev
         cd /usr/src/gtest && sudo cmake . && sudo make
+        ARCH=$(dpkg --print-architecture)
+        set -x
+        sudo curl -fsSL -o /usr/local/bin/bazel \
+            https://github.com/bazelbuild/bazelisk/releases/latest/download/bazelisk-linux-${ARCH}
+        sudo chmod 755 /usr/local/bin/bazel
       displayName: "Install dependencies"
     - script: |
         ./autogen.sh
         dpkg-buildpackage -rfakeroot -us -uc -b -j$(nproc) && cp ../*.deb .
       displayName: "Compile sonic swss common"
+    - script: |
+        bazel build //...
+        bazel test //...
+      displayName: "Compile and test all Bazel targets"
     - publish: $(System.DefaultWorkingDirectory)/
       artifact: sonic-swss-common.amd64.ubuntu20_04
       displayName: "Archive swss common debian packages"

tests/BUILD

@@ -0,0 +1,23 @@
+package(default_visibility = ["//visibility:public"])
+
+cc_test(
+    name = "status_code_util_test",
+    srcs = ["status_code_util_test.cpp"],
+    deps = [
+        "//:libswsscommon",
+        "@com_github_google_glog//:glog",
+        "@com_google_googletest//:gtest",
+        "@com_google_googletest//:gtest_main",
+    ],
+)
+
+cc_test(
+    name = "saiaclschema_ut",
+    srcs = ["saiaclschema_ut.cpp"],
+    deps = [
+        "//:libswsscommon",
+        "@com_github_google_glog//:glog",
+        "@com_google_googletest//:gtest",
+        "@com_google_googletest//:gtest_main",
+    ],
+)