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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,132 @@ | ||
| """rules_helm toolchain implementation""" | ||
|
|
||
| HelmPluginInfo = provider( | ||
| doc = "Info about a Helm plugin.", | ||
| fields = { | ||
| "data": "Depset[File]: Files associated with the plugin.", | ||
| "name": "String: The name of the plugin.", | ||
| "yaml": "File: The yaml file representing the plugin.", | ||
| }, | ||
| ) | ||
|
|
||
| def _helm_plugin_impl(ctx): | ||
| name = ctx.attr.plugin_name | ||
| if not name: | ||
| name = ctx.label.name | ||
|
|
||
| return [ | ||
| HelmPluginInfo( | ||
| yaml = ctx.file.yaml, | ||
| name = name, | ||
| data = depset(ctx.files.data), | ||
| ), | ||
| ] | ||
|
|
||
| helm_plugin = rule( | ||
| doc = "Define a [helm plugin](https://helm.sh/docs/topics/plugins/).", | ||
| implementation = _helm_plugin_impl, | ||
| attrs = { | ||
| "data": attr.label_list( | ||
| doc = "Additional files associated with the plugin.", | ||
| allow_files = True, | ||
| ), | ||
| "plugin_name": attr.string( | ||
| doc = "An explicit name for the plugin. If unset, `name` will be used.", | ||
| ), | ||
| "yaml": attr.label( | ||
| doc = "The yaml file representing the plugin", | ||
| allow_single_file = True, | ||
| mandatory = True, | ||
| ), | ||
| }, | ||
| ) | ||
|
|
||
| def _create_plugins_dir(*, ctx, plugins, output): | ||
| manifest = ctx.actions.declare_file("{}.manifest".format(output.basename), sibling = output) | ||
| manifest_data = {} | ||
| inputs = [depset([manifest])] | ||
| for plugin in plugins: | ||
| info = plugin[HelmPluginInfo] | ||
| inputs.append(depset([info.yaml], transitive = [info.data])) | ||
|
|
||
| if info.name in manifest_data: | ||
| fail("Two plugins sharing the name {} were provided. Please update {}".format( | ||
| info.name, | ||
| ctx.label, | ||
| )) | ||
|
|
||
| manifest_data[info.name] = { | ||
| "data": [f.path for f in info.data.to_list()], | ||
| "yaml": info.yaml.path, | ||
| } | ||
|
|
||
| ctx.actions.write( | ||
| output = manifest, | ||
| content = json.encode_indent(manifest_data, indent = " " * 4) + "\n", | ||
| ) | ||
|
|
||
| args = ctx.actions.args() | ||
| args.add("-manifest", manifest) | ||
| args.add("-output", output.path) | ||
|
|
||
| ctx.actions.run( | ||
| mnemonic = "HelmPluginsDir", | ||
| progress_message = "HelmPluginsDir %{label}", | ||
| executable = ctx.executable._plugins_builder, | ||
| arguments = [args], | ||
| inputs = depset(transitive = inputs), | ||
| outputs = [output], | ||
| ) | ||
|
|
||
| return output | ||
|
|
||
| def _helm_toolchain_impl(ctx): | ||
| binary = ctx.file.helm | ||
|
|
||
| plugins_dir = _create_plugins_dir( | ||
| ctx = ctx, | ||
| plugins = ctx.attr.plugins, | ||
| output = ctx.actions.declare_directory("{}.plugins".format(ctx.label.name)), | ||
| ) | ||
|
|
||
| template_variables = platform_common.TemplateVariableInfo({ | ||
| "HELM_BIN": binary.path, | ||
| "HELM_PLUGINS": plugins_dir.path, | ||
| }) | ||
|
|
||
| default_info = DefaultInfo( | ||
| files = depset([binary]), | ||
| runfiles = ctx.runfiles(files = [binary, plugins_dir]), | ||
| ) | ||
|
|
||
| toolchain_info = platform_common.ToolchainInfo( | ||
| helm = binary, | ||
| default_info = default_info, | ||
| plugins_dir = plugins_dir, | ||
| template_variables = template_variables, | ||
| ) | ||
|
|
||
| return [default_info, toolchain_info, template_variables] | ||
|
|
||
| helm_toolchain = rule( | ||
| implementation = _helm_toolchain_impl, | ||
| doc = "A helm toolchain.", | ||
| attrs = { | ||
| "helm": attr.label( | ||
| doc = "A helm binary", | ||
| allow_single_file = True, | ||
| mandatory = True, | ||
| cfg = "exec", | ||
| ), | ||
| "plugins": attr.label_list( | ||
| doc = "Additional plugins to make available to helm.", | ||
| cfg = "exec", | ||
| providers = [HelmPluginInfo], | ||
| ), | ||
| "_plugins_builder": attr.label( | ||
| default = Label("//helm/private/plugin:plugin_builder"), | ||
| cfg = "exec", | ||
| executable = True, | ||
| ), | ||
| }, | ||
| ) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,7 @@ | ||
| load("@io_bazel_rules_go//go:def.bzl", "go_binary") | ||
|
|
||
| go_binary( | ||
| name = "plugin_builder", | ||
| srcs = ["plugin_builder.go"], | ||
| visibility = ["//visibility:public"], | ||
| ) |
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