SERVER-98995 Fail the build if the user is not using Bazelisk (#30857)

GitOrigin-RevId: bb5a2b01e3371d97a3e469c379d88ad3268ce594

.bazelrc

@@ -396,3 +396,6 @@ try-import %workspace%/.bazelrc.git
 
 # Used for build profiles and any settings a user wants to consistently use
 try-import %workspace%/.bazelrc.local
+
+# Flag as built with bazelisk
+try-import %workspace%/.bazelrc.bazelisk

.gitignore

@@ -282,6 +282,7 @@ buildozer
 .bazelrc.gitinfo
 .bazelrc.workstation
 .bazelrc.xcode
+.bazelrc.bazelisk
 *.bazel_info_for_ninja.txt
 .ninja_last_command_line_targets.txt
 bazel/coverity/analysis/BUILD.bazel

bazel/config/BUILD.bazel

@@ -2444,3 +2444,35 @@ selects.config_setting_group(
         ":linux_gcc_fission",
     ],
 )
+
+# --------------------------------------
+# running_through_bazelisk
+# --------------------------------------
+
+bool_flag(
+    name = "running_through_bazelisk",
+    build_setting_default = False,
+)
+
+config_setting(
+    name = "running_through_bazelisk_enabled",
+    flag_values = {
+        "//bazel/config:running_through_bazelisk": "True",
+    },
+)
+
+selects.config_setting_group(
+    name = "x86_64_or_arm64",
+    match_any = [
+        "@platforms//cpu:aarch64",
+        "@platforms//cpu:x86_64",
+    ],
+)
+
+selects.config_setting_group(
+    name = "running_through_bazelisk_x86_64_or_arm64",
+    match_all = [
+        ":x86_64_or_arm64",
+        ":running_through_bazelisk_enabled",
+    ],
+)

bazel/mongo_src_rules.bzl

@@ -1283,6 +1283,20 @@ PGO_PROFILE_FLAGS = select({
     "//conditions:default": [],
 })
 
+# Hack to throw an error if the user isn't running bazel through bazelisk,
+# since we want to make sure the hook inside of tools/bazel gets run.
+RUNNING_THROUGH_BAZELISK_CHECK = select({
+    "//bazel/config:running_through_bazelisk_x86_64_or_arm64": [],
+    "@platforms//cpu:s390x": [],
+    "@platforms//cpu:ppc": [],
+}, no_match_error = """
+Error:
+  This repository must be built through bazelisk, please uninstall your current bazel
+  installation and then run:
+
+  python buildscripts/install_bazel.py
+""")
+
 MONGO_GLOBAL_INCLUDE_DIRECTORIES = [
     "-Isrc",
     "-I$(GENDIR)/src",
@@ -1354,7 +1368,8 @@ MONGO_GLOBAL_COPTS = (
     SASL_WINDOWS_COPTS +
     COVERAGE_FLAGS +
     PGO_PROFILE_FLAGS +
-    SHARED_ARCHIVE_COPTS
+    SHARED_ARCHIVE_COPTS +
+    RUNNING_THROUGH_BAZELISK_CHECK
 )
 
 MONGO_GLOBAL_LINKFLAGS = (

site_scons/site_tools/integrate_bazel.py

@@ -645,6 +645,12 @@ def bazel_build_thread_func(env, log_dir: str, verbose: bool, ninja_generate: bo
     print("Starting bazel build thread...")
     run_bazel_command(env, bazel_cmd)
 
+    # This is used to detect if a user is running under bazelisk, delete this since
+    # the SCons integration sets up bazelisk internally, but we want to trigger failures
+    # afterwards if the user calls a non-bazelisk bazel directly.
+    if os.path.exists(".bazelrc.bazelisk"):
+        os.remove(".bazelrc.bazelisk")
+
 
 def create_bazel_builder(builder: SCons.Builder.Builder) -> SCons.Builder.Builder:
     return SCons.Builder.Builder(

tools/bazel

@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+set -e
+
 # Whenever Bazel is invoked, it first calls this script setting "BAZEL_REAL" to the path of the real Bazel binary.
 # Use this file as a wrapper for any logic that should run before bazel itself is executed.
 
@@ -67,4 +69,6 @@ fi
 
 printf '%s\n' "${bazelrc_xcode_lines[@]}" > .bazelrc.xcode
 
+echo "common --//bazel/config:running_through_bazelisk" > .bazelrc.bazelisk
+
 exec "$bazel_real" "$@"

tools/bazel.bat

@@ -1,2 +1,3 @@
 @echo off
+echo common --//bazel/config:running_through_bazelisk > .bazelrc.bazelisk
 "%BAZEL_REAL%" %*