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

2 files changed, 199 insertions, 0 deletions

diff --git a/scripts/bazel/kill_orphaned_ct_run.sh b/scripts/bazel/kill_orphaned_ct_run.sh
new file mode 100755
index 0000000000..db53073bdd
--- /dev/null
+++ b/scripts/bazel/kill_orphaned_ct_run.sh
@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+pids=$(ps aux | grep -v awk | awk '/ct_run.*erl/ {print $2}')
+
+set -x
+kill $pids
diff --git a/scripts/bazel/rabbitmq-run.sh b/scripts/bazel/rabbitmq-run.sh
new file mode 100644
index 0000000000..d79afc1d97
--- /dev/null
+++ b/scripts/bazel/rabbitmq-run.sh
@@ -0,0 +1,192 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# https://stackoverflow.com/a/4774063
+SCRIPTPATH="$( cd "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
+
+if [ $1 = "-C" ]; then
+    cd $2
+    shift 2
+fi
+
+for arg in "$@"; do
+    case $arg in
+        run-broker)
+            CMD="$arg"
+            ;;
+        start-background-broker)
+            CMD="$arg"
+            ;;
+        stop-node)
+            CMD="$arg"
+            ;;
+        set-resource-alarm)
+            CMD="$arg"
+            ;;
+        clear-resource-alarm)
+            CMD="$arg"
+            ;;
+        *)
+            export "$arg"
+            ;;
+    esac
+done
+
+DEFAULT_PLUGINS_DIR=${SCRIPTPATH}/{RABBITMQ_HOME}/plugins
+if [ ! -z ${EXTRA_PLUGINS_DIR+x} ]; then
+    DEFAULT_PLUGINS_DIR=${DEFAULT_PLUGINS_DIR}:${EXTRA_PLUGINS_DIR}
+fi
+
+TEST_TMPDIR=${TEST_TMPDIR:=${TMPDIR}/rabbitmq-test-instances}
+RABBITMQ_SCRIPTS_DIR=${SCRIPTPATH}/{RABBITMQ_HOME}/sbin
+RABBITMQ_PLUGINS=${RABBITMQ_SCRIPTS_DIR}/rabbitmq-plugins
+RABBITMQ_SERVER=${RABBITMQ_SCRIPTS_DIR}/rabbitmq-server
+RABBITMQCTL=${RABBITMQ_SCRIPTS_DIR}/rabbitmqzctl
+
+export RABBITMQ_SCRIPTS_DIR RABBITMQCTL RABBITMQ_PLUGINS RABBITMQ_SERVER
+
+HOSTNAME="$(hostname -s)"
+
+RABBITMQ_NODENAME=${RABBITMQ_NODENAME:=rabbit@${HOSTNAME}}
+RABBITMQ_NODENAME_FOR_PATHS=${RABBITMQ_NODENAME_FOR_PATHS:=${RABBITMQ_NODENAME}}
+NODE_TMPDIR=${TEST_TMPDIR}/${RABBITMQ_NODENAME_FOR_PATHS}
+
+RABBITMQ_BASE=${NODE_TMPDIR}
+RABBITMQ_PID_FILE=${NODE_TMPDIR}/${RABBITMQ_NODENAME_FOR_PATHS}.pid
+RABBITMQ_LOG_BASE=${NODE_TMPDIR}/log
+RABBITMQ_MNESIA_BASE=${NODE_TMPDIR}/mnesia
+RABBITMQ_MNESIA_DIR=${RABBITMQ_MNESIA_BASE}/${RABBITMQ_NODENAME_FOR_PATHS}
+RABBITMQ_QUORUM_DIR=${RABBITMQ_MNESIA_DIR}/quorum
+RABBITMQ_STREAM_DIR=${RABBITMQ_MNESIA_DIR}/stream
+RABBITMQ_PLUGINS_DIR=${RABBITMQ_PLUGINS_DIR:=${DEFAULT_PLUGINS_DIR}}
+RABBITMQ_PLUGINS_EXPAND_DIR=${NODE_TMPDIR}/plugins
+RABBITMQ_FEATURE_FLAGS_FILE=${NODE_TMPDIR}/feature_flags
+RABBITMQ_ENABLED_PLUGINS_FILE=${NODE_TMPDIR}/enabled_plugins
+
+RABBITMQ_SERVER_START_ARGS="${RABBITMQ_SERVER_START_ARGS:=-ra wal_sync_method sync}"
+
+# Enable colourful debug logging by default
+# To change this, set RABBITMQ_LOG to info, notice, warning etc.
+RABBITMQ_LOG=${RABBITMQ_LOG:='debug,+color'}
+export RABBITMQ_LOG
+
+if [ -z ${LEAVE_PLUGINS_DISABLED+x} ]; then
+    RABBITMQ_ENABLED_PLUGINS=ALL
+else
+    RABBITMQ_ENABLED_PLUGINS=
+fi
+
+mkdir -p ${TEST_TMPDIR}
+
+mkdir -p ${RABBITMQ_LOG_BASE}
+mkdir -p ${RABBITMQ_MNESIA_BASE}
+mkdir -p ${RABBITMQ_PLUGINS_EXPAND_DIR}
+
+export \
+    RABBITMQ_NODENAME \
+    RABBITMQ_NODE_IP_ADDRESS \
+    RABBITMQ_BASE \
+    RABBITMQ_PID_FILE \
+    RABBITMQ_LOG_BASE \
+    RABBITMQ_MNESIA_BASE \
+    RABBITMQ_MNESIA_DIR \
+    RABBITMQ_QUORUM_DIR \
+    RABBITMQ_STREAM_DIR \
+    RABBITMQ_FEATURE_FLAGS_FILE \
+    RABBITMQ_PLUGINS_DIR \
+    RABBITMQ_PLUGINS_EXPAND_DIR \
+    RABBITMQ_SERVER_START_ARGS \
+    RABBITMQ_ENABLED_PLUGINS \
+    RABBITMQ_ENABLED_PLUGINS_FILE
+
+write_config_file() {
+cat << EOF > ${RABBITMQ_CONFIG_FILE}
+%% vim:ft=erlang:
+
+[
+  {rabbit, [
+      {loopback_users, []},
+      {log, [{file, [{level, debug}]},
+             {console, [{level, debug}]}]}
+    ]},
+  {rabbitmq_management, [
+    ]},
+  {rabbitmq_mqtt, [
+    ]},
+  {rabbitmq_stomp, [
+    ]},
+  {ra, [
+      {data_dir, "${RABBITMQ_QUORUM_DIR}"},
+      {wal_sync_method, sync}
+    ]},
+  {lager, [
+      {colors, [
+          %% https://misc.flogisoft.com/bash/tip_colors_and_formatting
+          {debug,     "\\\e[0;34m" },
+          {info,      "\\\e[1;37m" },
+          {notice,    "\\\e[1;36m" },
+          {warning,   "\\\e[1;33m" },
+          {error,     "\\\e[1;31m" },
+          {critical,  "\\\e[1;35m" },
+          {alert,     "\\\e[1;44m" },
+          {emergency, "\\\e[1;41m" }
+      ]}
+    ]},
+  {osiris, [
+      {data_dir, "${RABBITMQ_STREAM_DIR}"}
+    ]}
+].
+EOF
+}
+
+case $CMD in
+    run-broker)
+        export RABBITMQ_ALLOW_INPUT=true
+        export RABBITMQ_CONFIG_FILE=${TEST_TMPDIR}/test.config
+        write_config_file
+        ${RABBITMQ_SCRIPTS_DIR}/rabbitmq-server
+        ;;
+    start-background-broker)
+        RMQCTL_WAIT_TIMEOUT=${RMQCTL_WAIT_TIMEOUT:=60}
+
+        ${RABBITMQ_SCRIPTS_DIR}/rabbitmq-server \
+            > ${RABBITMQ_LOG_BASE}/startup_log \
+            2> ${RABBITMQ_LOG_BASE}/startup_err &
+
+        # rabbitmqctl wait shells out to 'ps', which is broken in the bazel macOS
+        # sandbox (https://github.com/bazelbuild/bazel/issues/7448)
+        # adding "--spawn_strategy=local" to the invocation is a workaround
+        ${RABBITMQ_SCRIPTS_DIR}/rabbitmqctl \
+            -n ${RABBITMQ_NODENAME} \
+            wait \
+            --timeout ${RMQCTL_WAIT_TIMEOUT} \
+            ${RABBITMQ_PID_FILE}
+
+        {ERLANG_HOME}/bin/erl \
+            -noinput \
+            -eval "true = rpc:call('${RABBITMQ_NODENAME}', rabbit, is_running, []), halt()." \
+            -sname {SNAME} \
+            -hidden
+        ;;
+    stop-node)
+        pid=$(test -f $RABBITMQ_PID_FILE && cat $RABBITMQ_PID_FILE); \
+            test "$pid" && \
+            kill -TERM "$pid" && \
+            echo "waiting for process to exit" && \
+            while ps -p "$pid" >/dev/null 2>&1; do sleep 1; done
+        ;;
+    set-resource-alarm)
+        ERL_LIBS="{ERL_LIBS}" \
+           ${RABBITMQ_SCRIPTS_DIR}/rabbitmqctl -n ${RABBITMQ_NODENAME} \
+            eval "rabbit_alarm:set_alarm({{resource_limit, ${SOURCE}, node()}, []})."
+        ;;
+    clear-resource-alarm)
+        ERL_LIBS="{ERL_LIBS}" \
+            ${RABBITMQ_SCRIPTS_DIR}/rabbitmqctl -n ${RABBITMQ_NODENAME} \
+            eval "rabbit_alarm:clear_alarm({resource_limit, ${SOURCE}, node()})."
+        ;;
+    *)
+        echo "rabbitmq-run does not support $CMD"
+        exit 1
+        ;;
+esac