112 lines
4.5 KiB
Python
112 lines
4.5 KiB
Python
"""Compatibility rule for running an executable target as a dev server."""
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load("//internal:js_library.bzl", "collect_js_runfiles")
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load("//internal:runtime_launcher.bzl", "declare_runtime_wrapper", "runfiles_path", "runtime_launcher_attrs", "write_launcher_spec")
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load("//internal:workspace.bzl", "create_bun_workspace_info", "workspace_runfiles")
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def _js_run_devserver_impl(ctx):
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toolchain = ctx.toolchains["//bun:toolchain_type"]
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bun_bin = toolchain.bun.bun_bin
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package_json = ctx.file.package_json
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dep_runfiles = [collect_js_runfiles(dep) for dep in ctx.attr.deps]
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tool_default_info = ctx.attr.tool[DefaultInfo]
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workspace_info = create_bun_workspace_info(
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ctx,
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primary_file = package_json or tool_default_info.files_to_run.executable,
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package_json = package_json,
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package_dir_hint = ctx.attr.package_dir_hint,
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extra_files = ctx.files.data + [bun_bin, tool_default_info.files_to_run.executable],
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)
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spec_file = write_launcher_spec(ctx, {
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"version": 1,
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"kind": "tool_exec",
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"bun_short_path": runfiles_path(bun_bin),
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"primary_source_short_path": runfiles_path(package_json) if package_json else runfiles_path(tool_default_info.files_to_run.executable),
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"package_json_short_path": runfiles_path(package_json) if package_json else "",
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"install_metadata_short_path": runfiles_path(workspace_info.install_metadata_file) if workspace_info.install_metadata_file else "",
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"install_repo_runfiles_path": workspace_info.install_repo_runfiles_path,
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"node_modules_roots": workspace_info.node_modules_roots,
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"package_dir_hint": ctx.attr.package_dir_hint,
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"working_dir_mode": ctx.attr.working_dir,
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"inherit_host_path": ctx.attr.inherit_host_path,
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"argv": [],
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"args": ctx.attr.args,
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"passthrough_args": True,
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"tool_short_path": runfiles_path(tool_default_info.files_to_run.executable),
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"restart_on": [],
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"watch_mode": "",
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"reporter": "",
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"coverage": False,
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"coverage_reporters": [],
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"preload_short_paths": [],
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"env_file_short_paths": [],
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"test_short_paths": [],
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})
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launcher = declare_runtime_wrapper(ctx, bun_bin, spec_file)
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return [
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workspace_info,
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DefaultInfo(
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executable = launcher.executable,
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runfiles = workspace_runfiles(
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ctx,
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workspace_info,
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direct_files = [launcher.executable, launcher.runner, spec_file, tool_default_info.files_to_run.executable],
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transitive_files = dep_runfiles,
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).merge(tool_default_info.default_runfiles),
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),
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]
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_JS_RUN_DEVSERVER_ATTRS = runtime_launcher_attrs()
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_JS_RUN_DEVSERVER_ATTRS.update({
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"tool": attr.label(
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mandatory = True,
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executable = True,
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cfg = "target",
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doc = "Executable target to launch as the dev server.",
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),
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"package_json": attr.label(
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allow_single_file = True,
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doc = "Optional package.json used to resolve the package working directory.",
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),
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"package_dir_hint": attr.string(
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default = ".",
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doc = "Optional package-relative directory hint when package_json is not supplied.",
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),
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"node_modules": attr.label(
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doc = "Optional label providing package files from a node_modules tree, typically produced by bun_install or npm_translate_lock, in runfiles.",
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),
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"deps": attr.label_list(
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doc = "Library dependencies required by the dev server.",
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),
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"data": attr.label_list(
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allow_files = True,
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doc = "Additional runtime files required by the dev server.",
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),
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"working_dir": attr.string(
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default = "workspace",
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values = ["workspace", "package"],
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doc = "Working directory at runtime: Bazel runfiles workspace root or the resolved package directory.",
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),
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"inherit_host_path": attr.bool(
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default = False,
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doc = "If true, appends the host PATH after staged node_modules/.bin entries at runtime.",
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),
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})
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js_run_devserver = rule(
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implementation = _js_run_devserver_impl,
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doc = """Runs an executable target from a staged JS workspace.
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This is a Bun-backed compatibility adapter for `rules_js`-style devserver
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targets. It stages the same runtime workspace as the Bun rules, then executes
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the provided tool with any default arguments. It is intended for local
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development workflows rather than hermetic build execution.
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""",
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attrs = _JS_RUN_DEVSERVER_ATTRS,
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executable = True,
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toolchains = ["//bun:toolchain_type"],
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)
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