build(bazel): use Bazel modules

Issue: #225 #507 #513 #581
Closes: #616

.github/workflows/bazel-ci.yml

@@ -35,6 +35,9 @@ jobs:
       - name: Test with SSL
         run: bazel test --config=ssl ${{ matrix.bazel_args }} --test_output=all //...
 
+      - name: Build with SSL and bzlmod
+        run: bazel build --enable_bzlmod --config=ssl ${{ matrix.bazel_args }} //...
+
       - name: Build
         run: bazel build //...
 

MODULE.bazel

@@ -0,0 +1,19 @@
+module(
+    name = "prometheus-cpp",
+    version = "1.1.0",
+    repo_name = "com_github_jupp0r_prometheus_cpp",
+)
+
+data_deps_ext = use_extension("//bazel:repositories.bzl", "data_deps_ext")
+use_repo(
+    data_deps_ext,
+    "civetweb",
+    "com_github_curl",
+    "com_github_google_benchmark",
+)
+
+bazel_dep(name = "boringssl", version = "0.0.0-20211025-d4f1ab9")
+bazel_dep(name = "googletest", version = "1.12.1", dev_dependency = True, repo_name = "com_google_googletest")
+bazel_dep(name = "platforms", version = "0.0.6", dev_dependency = True)
+bazel_dep(name = "rules_cc", version = "0.0.4", dev_dependency = True)
+bazel_dep(name = "zlib", version = "1.2.13")

WORKSPACE.bzlmod

@@ -0,0 +1,2 @@
+# When Bzlmod is enabled, this file replaces the content of the original WORKSPACE
+# and makes sure no WORKSPACE prefix or suffix are added when Bzlmod is enabled.

bazel/repositories.bzl

@@ -47,7 +47,7 @@ def prometheus_cpp_repositories():
 
     maybe(
         http_archive,
-        name = "net_zlib_zlib",
+        name = "zlib",
         sha256 = "b3a24de97a8fdbc835b9833169501030b8977031bcb54b3b3ac13740f846ab30",
         strip_prefix = "zlib-1.2.13",
         urls = [
@@ -70,3 +70,10 @@ def prometheus_cpp_repositories():
             "https://github.com/google/boringssl/archive/b9232f9e27e5668bc0414879dcdedb2a59ea75f2.tar.gz",
         ],
     )
+
+def _data_deps_extension_impl(ctx):
+    prometheus_cpp_repositories()
+
+data_deps_ext = module_extension(
+    implementation = _data_deps_extension_impl,
+)

bazel/zlib.BUILD

@@ -3,7 +3,7 @@
 licenses(["notice"])  # BSD/MIT-like license (for zlib)
 
 cc_library(
-    name = "z",
+    name = "zlib",
     srcs = glob(["*.c"]),
     hdrs = glob(["*.h"]),
     # Use -Dverbose=-1 to turn off zlib's trace logging. (bazelbuild/bazel#3280)

pull/BUILD.bazel

@@ -23,7 +23,7 @@ cc_library(
     deps = [
         "//core",
         "@civetweb",
-        "@net_zlib_zlib//:z",
+        "@zlib",
     ],
 )