rpm_packages rules

rpm_packages/BUILD

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+package(default_visibility = ["//visibility:public"])
+
+# rules_go boilerplate
+load("@bazel_gazelle//:def.bzl", "gazelle")
+
+gazelle(
+    name = "gazelle",
+    prefix = "github.com/bazelbuild/rules_pkg",
+)

rpm_packages/WORKSPACE

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+workspace(name = "rules_pkg")

rpm_packages/rpm_packages.bzl

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+def _rpm_packages_impl(repository_ctx):
+  # check that keys in "packages" and "packages_sha256" are the same
+  for package in repository_ctx.attr.packages:
+    if package not in repository_ctx.attr.packages_sha256:
+      fail("Package named \"%s\" was not found in packages_sha256 of rule %s" % (package, repository_ctx.name))
+
+  # download each package
+  package_rule_dict = {}
+  for package in repository_ctx.attr.packages:
+    urllist = []
+    for mirror in repository_ctx.attr.mirrors:
+      # allow mirror URLs that don't end in /
+      if mirror.endswith("/"):
+        urllist.append(mirror + repository_ctx.attr.packages[package])
+      else:
+        urllist.append(mirror + "/" + repository_ctx.attr.packages[package])
+    repository_ctx.download(
+        urllist,
+        output="rpms/" + repository_ctx.attr.packages_sha256[package] + ".rpm",
+        sha256=repository_ctx.attr.packages_sha256[package],
+        executable=False)
+    package_rule_dict[package] = "@" + repository_ctx.name + "//rpms:" + repository_ctx.attr.packages_sha256[package] + ".rpm"
+
+  # create the rpm_packages.bzl file that contains the package name : filename mapping
+  repository_ctx.file("rpms/rpm_packages.bzl", repository_ctx.name + " = " + struct(**package_rule_dict).to_json(), executable=False)
+
+  # create the BUILD file that globs all the rpm files
+  repository_ctx.file("rpms/BUILD", """
+package(default_visibility = ["//visibility:public"])
+rpm_files = glob(["*.rpm"])
+exports_files(rpm_files + ["rpm_packages.bzl"])
+""", executable=False)
+
+_rpm_packages = repository_rule(
+    _rpm_packages_impl,
+    attrs = {
+        "distro_type": attr.string(
+            doc = "the name of the distribution type, required - e.g. centos, fedora, or redhat",
+        ),
+        "distro": attr.string(
+            doc = "the name of the distribution, required - e.g. 7 or 8",
+        ),
+        "arch": attr.string(
+            doc = "the target package architecture, required - e.g. arm64 or amd64",
+        ),
+        "packages": attr.string_dict(
+            doc = "a dictionary mapping packagename to package_path, required - e.g. {\"foo\":\"pool/main/f/foo/foo_1.2.3-0_amd64.rpm\"}",
+        ),
+        "packages_sha256": attr.string_dict(
+            doc = "a dictionary mapping packagename to package_hash, required - e.g. {\"foo\":\"1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef\"}",
+        ),
+        "mirrors": attr.string_list(
+            doc = "a list of full URLs of the package repository, required - e.g. http://rpm.centos.org/centos",
+        ),
+        "components": attr.string_list(
+            doc = "a list of accepted components - e.g. universe, multiverse",
+        ),
+        "pgp_key": attr.string(
+            doc = "the name of the http_file rule that contains the pgp key that signed the Release file at <mirrorURL>/dists/<distro>/Release, required",
+        ),
+    },
+)
+
+def rpm_packages(**kwargs):
+  _rpm_packages(**kwargs)