Add Bazel build support for simple_switch_grpc

.bazelrc

@@ -0,0 +1,18 @@
+# C++17 enforce for BMv2
+build --cxxopt=-std=c++17
+build --host_cxxopt=-std=c++17
+
+# Shared libraries and PIC
+build --copt=-fPIC
+
+# Build configurations and features (analogous to CMake defaults)
+build --copt=-DLOG_DEBUG_ON
+build --copt=-DLOG_TRACE_ON
+build --copt=-DWP4_16_STACKS
+
+# Strict warnings for our code but not for third-party
+build --copt=-Wall
+build --copt=-Wextra
+build --per_file_copt=external/.*@-Wno-error
+
+

.bazelversion

@@ -0,0 +1 @@
+8.5.0

.github/workflows/bazel_ci.yml

@@ -0,0 +1,35 @@
+name: Bazel Integration
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  bazel-build:
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Git Checkout
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - name: Setup System Requirements
+        run: sudo ./install_deps_ubuntu_22.04.sh
+
+      - name: Initialize Bazel Cache
+        uses: actions/cache@v3
+        with:
+          path: ~/.cache/bazel
+          key: ${{ runner.os }}-bazel-${{ hashFiles('MODULE.bazel', '.bazelversion', '.bazelrc') }}
+          restore-keys: |
+            ${{ runner.os }}-bazel-
+
+      - name: Compile simple_switch_grpc
+        run: bazel build //targets/simple_switch_grpc:simple_switch_grpc
+
+      - name: Execute simple_switch_grpc tests
+        run: bazel test //targets/simple_switch_grpc/tests/...

.gitignore

@@ -104,3 +104,7 @@ VERSION-build
 
 core
 vgcore*
+
+# Bazel
+bazel-*
+MODULE.bazel.lock

BUILD.bazel

@@ -0,0 +1,2 @@
+# Expose VERSION file for the code generation
+exports_files(["VERSION"])

MODULE.bazel

@@ -0,0 +1,9 @@
+module(
+    name = "behavioral_model",
+    version = "1.13.0",
+)
+
+bazel_dep(name = "rules_cc", version = "0.1.1")
+bazel_dep(name = "googletest", version = "1.17.0")
+bazel_dep(name = "rules_proto", version = "7.1.0")
+# gRPC and Protobuf are provided by the Ubuntu system to maintain ABI compatibility with PI.

PI/BUILD.bazel

@@ -0,0 +1,22 @@
+load("@rules_cc//cc:defs.bzl", "cc_library")
+
+cc_library(
+    name = "bmpi_frontend",
+    srcs = glob(["src/*.cpp"]),
+    hdrs = glob([
+        "src/*.h",
+        "bm/PI/*.h",
+    ]),
+    includes = [
+        ".",
+        "../targets/simple_switch",
+    ],
+    defines = ["WITH_SIMPLE_SWITCH"],
+    deps = [
+        "//include:bmv2_headers",
+        "//src/bm_sim:bmv2_core_engine",
+        "//targets/simple_switch:headers",
+    ],
+    alwayslink = True,
+    visibility = ["//visibility:public"],
+)

include/BUILD.bazel

@@ -0,0 +1,16 @@
+load("@rules_cc//cc:defs.bzl", "cc_library")
+
+genrule(
+    name = "cmake_config_header_gen",
+    srcs = ["bm/config.h.in"],
+    outs = ["bm/config.h"],
+    cmd = "sed -e 's/#cmakedefine/#undef/g' $(location bm/config.h.in) > $@",
+    message = "Generating bm/config.h from CMake template...",
+)
+
+cc_library(
+    name = "bmv2_headers",
+    hdrs = glob(["bm/**/*.h"]) + [":cmake_config_header_gen"],
+    includes = ["."],
+    visibility = ["//visibility:public"],
+)

install_deps_ubuntu_22.04.sh

@@ -3,8 +3,8 @@ set -e
 
 apt-get update
 apt-get install -y curl gnupg
-echo 'deb http://download.opensuse.org/repositories/home:/p4lang/xUbuntu_22.04/ /' | tee /etc/apt/sources.list.d/home:p4lang.list
-curl -fsSL https://download.opensuse.org/repositories/home:p4lang/xUbuntu_22.04/Release.key | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/home_p4lang.gpg > /dev/null
+# Add repository as trusted to bypass expired GPG keys from openSUSE build service
+echo 'deb [trusted=yes] http://download.opensuse.org/repositories/home:/p4lang/xUbuntu_22.04/ /' | tee /etc/apt/sources.list.d/home:p4lang.list
 
 apt-get update
 

services/BUILD.bazel

@@ -0,0 +1,27 @@
+load("@rules_cc//cc:defs.bzl", "cc_library")
+
+genrule(
+    name = "dataplane_interface_codegen",
+    srcs = ["p4/bm/dataplane_interface.proto"],
+    outs = [
+        "p4/bm/dataplane_interface.pb.h",
+        "p4/bm/dataplane_interface.pb.cc",
+        "p4/bm/dataplane_interface.grpc.pb.h",
+        "p4/bm/dataplane_interface.grpc.pb.cc",
+    ],
+    cmd = "protoc -Iservices --cpp_out=$(RULEDIR) --grpc_out=$(RULEDIR) --plugin=protoc-gen-grpc=/usr/bin/grpc_cpp_plugin $(location p4/bm/dataplane_interface.proto)",
+)
+
+cc_library(
+    name = "dataplane_grpc_interface",
+    srcs = [
+        "p4/bm/dataplane_interface.pb.cc",
+        "p4/bm/dataplane_interface.grpc.pb.cc",
+    ],
+    hdrs = [
+        "p4/bm/dataplane_interface.pb.h",
+        "p4/bm/dataplane_interface.grpc.pb.h",
+    ],
+    includes = ["."],
+    visibility = ["//visibility:public"],
+)

src/BMI/BUILD.bazel

@@ -0,0 +1,10 @@
+load("@rules_cc//cc:defs.bzl", "cc_library")
+
+cc_library(
+    name = "bmi_lib",
+    srcs = ["bmi_interface.c", "bmi_port.c"],
+    hdrs = glob(["*.h", "BMI/*.h"]),
+    includes = ["."],
+    linkopts = ["-lpcap"],
+    visibility = ["//visibility:public"],
+)

src/bm_sim/BUILD.bazel

@@ -0,0 +1,38 @@
+load("@rules_cc//cc:defs.bzl", "cc_library")
+
+genrule(
+    name = "generate_version_file",
+    srcs = ["version.cpp.in", "//:VERSION"],
+    outs = ["version.cpp"],
+    cmd = "sed 's/@BM_VERSION@/1.13.0/g' $(location version.cpp.in) > $@",
+    message = "Injecting BMv2 Version Information...",
+)
+
+cc_library(
+    name = "bmv2_core_engine",
+    srcs = glob([
+        "*.cpp",
+        "*.c",
+        "core/*.cpp",
+    ]) + [":generate_version_file"],
+    hdrs = glob(["*.h"]),
+    includes = ["."],
+    linkopts = [
+        "-lgmp",
+        "-lpcap",
+        "-lnanomsg",
+        "-lpthread",
+        "-ldl",
+        "-lboost_program_options",
+        "-lboost_system",
+        "-lboost_filesystem",
+        "-lboost_thread",
+    ],
+    deps = [
+        "//include:bmv2_headers",
+        "//src/BMI:bmi_lib",
+        "//third_party:jsoncpp_external",
+        "//third_party:spdlog_external",
+    ],
+    visibility = ["//visibility:public"],
+)

targets/simple_switch/BUILD.bazel

@@ -0,0 +1,23 @@
+load("@rules_cc//cc:defs.bzl", "cc_library")
+
+cc_library(
+    name = "simple_switch_base",
+    srcs = glob(["*.cpp"], exclude = ["main.cpp"]),
+    hdrs = glob([
+        "*.h",
+        "bm/**/*.h"
+    ]),
+    includes = ["."],
+    deps = [
+        "//include:bmv2_headers",
+        "//src/bm_sim:bmv2_core_engine",
+        "//src/BMI:bmi_lib",
+    ],
+    visibility = ["//visibility:public"],
+)
+
+alias(
+    name = "headers",
+    actual = ":simple_switch_base",
+    visibility = ["//visibility:public"],
+)

targets/simple_switch_grpc/BUILD.bazel

@@ -0,0 +1,40 @@
+load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_library")
+
+PI_AND_GRPC_LINKOPTS = [
+    "-L/usr/local/lib",
+    "-Wl,-rpath=/usr/local/lib",
+    "-lpigrpcserver", "-lpifeproto", "-lpiprotogrpc", "-lpiprotobuf",
+    "-lpifecpp", "-lpiconvertproto", "-lpi", "-lpip4info", "-lpifegeneric",
+    "-lgrpc++_reflection", "-lgrpc++", "-lgrpc", "-lprotobuf", "-lgpr",
+]
+
+cc_library(
+    name = "simple_switch_grpc_runner",
+    srcs = ["switch_runner.cpp"],
+    hdrs = ["switch_runner.h"],
+    includes = ["."],
+    deps = [
+        "//targets/simple_switch:simple_switch_base",
+        "//PI:bmpi_frontend",
+        "//services:dataplane_grpc_interface",
+    ],
+    linkopts = PI_AND_GRPC_LINKOPTS,
+    visibility = ["//visibility:public"],
+)
+
+cc_binary(
+    name = "simple_switch_grpc_app",
+    srcs = ["main.cpp"],
+    deps = [
+        ":simple_switch_grpc_runner",
+        "//targets/simple_switch:simple_switch_base",
+    ],
+    linkopts = PI_AND_GRPC_LINKOPTS,
+    visibility = ["//visibility:public"],
+)
+
+alias(
+    name = "simple_switch_grpc",
+    actual = ":simple_switch_grpc_app",
+    visibility = ["//visibility:public"],
+)

targets/simple_switch_grpc/tests/BUILD.bazel

@@ -0,0 +1,55 @@
+load("@rules_cc//cc:defs.bzl", "cc_test", "cc_library")
+
+PI_AND_GRPC_LINKOPTS = [
+    "-L/usr/local/lib",
+    "-Wl,-rpath=/usr/local/lib",
+    "-lpigrpcserver", "-lpifeproto", "-lpiprotogrpc", "-lpiprotobuf",
+    "-lpifecpp", "-lpiconvertproto", "-lpi", "-lpip4info", "-lpifegeneric",
+    "-lgrpc++_reflection", "-lgrpc++", "-lgrpc", "-lprotobuf", "-lgpr",
+]
+
+cc_library(
+    name = "bmv2_test_utilities",
+    srcs = [
+        "base_test.cpp",
+        "utils.cpp",
+    ],
+    hdrs = [
+        "base_test.h",
+        "utils.h",
+    ],
+    deps = [
+        "//targets/simple_switch_grpc:simple_switch_grpc_runner",
+        "//targets/simple_switch:simple_switch_base",
+        "//services:dataplane_grpc_interface",
+        "@googletest//:gtest",
+    ],
+    linkopts = PI_AND_GRPC_LINKOPTS,
+    defines = ["TESTDATADIR=\\\"targets/simple_switch_grpc/tests/testdata\\\""],
+    copts = [
+        "-Wno-error=unused-result",
+        "-Wno-error=deprecated-declarations"
+    ],
+)
+
+TEST_MODULES = [
+    "test_basic", "test_grpc_dp", "test_packet_io", "test_counter",
+    "test_meter", "test_ternary", "test_pre", "test_digest",
+    "test_idle_timeout", "test_action_profile", "test_optional"
+]
+
+[cc_test(
+    name = t,
+    srcs = [t + ".cpp", "main.cpp"],
+    deps = [":bmv2_test_utilities", "@googletest//:gtest"],
+    data = glob(["testdata/**"]),
+    linkopts = PI_AND_GRPC_LINKOPTS,
+    linkstatic = True,
+    tags = ["exclusive"],
+) for t in TEST_MODULES]
+
+# Provide a single alias to run all tests
+test_suite(
+    name = "all_tests",
+    tests = [":{}".format(t) for t in TEST_MODULES],
+)

third_party/BUILD.bazel

@@ -0,0 +1,19 @@
+load("@rules_cc//cc:defs.bzl", "cc_library")
+
+cc_library(
+    name = "jsoncpp_external",
+    srcs = ["jsoncpp/src/jsoncpp.cpp"],
+    hdrs = ["jsoncpp/include/jsoncpp/json.h"],
+    includes = ["jsoncpp/include"],
+    visibility = ["//visibility:public"],
+)
+
+cc_library(
+    name = "spdlog_external",
+    hdrs = glob([
+        "spdlog/bm/spdlog/**/*.h",
+        "spdlog/bm/spdlog/**/*.cc",
+    ]),
+    includes = ["spdlog"],
+    visibility = ["//visibility:public"],
+)

tools/bazel/BUILD.bazel

@@ -0,0 +1,2 @@
+# Define this directory as a Bazel package so bzl files can be loaded using //tools/bazel:bmv2_macros.bzl
+exports_files(["bmv2_macros.bzl"])