Add a partial Bazel build (#2938)

Adds WORKSPACE.bazel, BUILD.bazel & *.bzl files for partial build & test with Bazel. Introduces a build-time dependency on https://github.com/rabbitmq/bazel-erlang

1 files changed, 124 insertions, 0 deletions

diff --git a/BUILD.bazel b/BUILD.bazel
new file mode 100644
index 0000000000..b3f3e2e1b2
--- /dev/null
+++ b/BUILD.bazel
@@ -0,0 +1,124 @@
+load("elixir_home.bzl", "elixir_home")
+load(":rabbitmq_home.bzl", "rabbitmq_home")
+load(":rabbitmq_run.bzl", "rabbitmq_run", "rabbitmq_run_command")
+load(":rabbitmqctl.bzl", "rabbitmqctl")
+load(":rabbitmq.bzl", "management_plugins", "required_plugins")
+
+exports_files([
+    "scripts/bazel/rabbitmq-run.sh",
+])
+
+# This allows us to
+# `bazel build //my/target \
+#    --//:elixir_home=/path/to/elixir/installation`
+elixir_home(
+    name = "elixir_home",
+    build_setting_default = "~/.kiex/elixirs/elixir-1.10.4",
+    visibility = ["//visibility:public"],
+)
+
+platform(
+    name = "erlang_22_platform",
+    constraint_values = [
+        "@platforms//os:linux",
+        "@platforms//cpu:x86_64",
+        "@bazel_tools//tools/cpp:clang",
+    ],
+    exec_properties = {
+        "OSFamily": "Linux",
+        "container-image": "docker://pivotalrabbitmq/rabbitmq-server-buildenv:linux-erlang-22.3",
+    },
+)
+
+platform(
+    name = "erlang_23_platform",
+    constraint_values = [
+        "@platforms//os:linux",
+        "@platforms//cpu:x86_64",
+        "@bazel_tools//tools/cpp:clang",
+    ],
+    exec_properties = {
+        "OSFamily": "Linux",
+        "container-image": "docker://pivotalrabbitmq/rabbitmq-server-buildenv:linux-erlang-23.2",
+    },
+)
+
+rabbitmq_home(
+    name = "broker-home",
+    plugins = required_plugins(rabbitmq_workspace = "@"),
+)
+
+rabbitmq_home(
+    name = "broker-management-home",
+    plugins = required_plugins(rabbitmq_workspace = "@") + management_plugins(rabbitmq_workspace = "@"),
+)
+
+rabbitmq_home(
+    name = "broker-for-tests-home",
+    testonly = True,
+    plugins = [
+        "//deps/rabbit:test_bazel_erlang_lib",  # <- compiled with test erlc_opts
+        "@rabbitmq_ct_client_helpers//:bazel_erlang_lib",
+        "@inet_tcp_proxy//:bazel_erlang_lib",
+        "@meck//:bazel_erlang_lib",
+    ],
+)
+
+rabbitmq_home(
+    name = "broker-for-cli-tests-home",
+    plugins = required_plugins(rabbitmq_workspace = "@") + [
+        "//deps/rabbitmq_federation:bazel_erlang_lib",
+        "//deps/rabbitmq_stomp:bazel_erlang_lib",
+        "//deps/amqp_client:bazel_erlang_lib",
+    ],
+)
+
+rabbitmq_run(
+    name = "rabbitmq-run",
+    home = ":broker-home",
+    visibility = ["//visibility:public"],
+)
+
+rabbitmq_run(
+    name = "rabbitmq-management-run",
+    home = ":broker-management-home",
+    visibility = ["//visibility:public"],
+)
+
+rabbitmq_run(
+    name = "rabbitmq-for-tests-run",
+    testonly = True,
+    home = ":broker-for-tests-home",
+    visibility = ["//visibility:public"],
+)
+
+rabbitmq_run(
+    name = "rabbitmq-for-cli-tests-run",
+    testonly = True,
+    home = ":broker-for-cli-tests-home",
+    visibility = ["//visibility:public"],
+)
+
+# Allow us to `bazel run broker`
+# for the equivalent of `make run-broker`
+# (though it as of yet includes no plugins)
+rabbitmq_run_command(
+    name = "broker",
+    rabbitmq_run = ":rabbitmq-run",
+    subcommand = "run-broker",
+)
+
+# `bazel run broker-management` for the broker with just the
+# management plugin
+rabbitmq_run_command(
+    name = "broker-management",
+    rabbitmq_run = ":rabbitmq-management-run",
+    subcommand = "run-broker",
+)
+
+# `bazel run rabbitmqctl`
+rabbitmqctl(
+    name = "rabbitmqctl",
+    home = ":broker-home",
+    visibility = ["//visibility:public"],
+)