mirror of
https://github.com/bazel-contrib/bazel-lib
synced 2024-11-25 11:32:33 +00:00
3e9577ab16
* yq: allow any filename in srcs * yq: add test cases for free-form file extensions in input * run buildifier --------- Co-authored-by: Alex Eagle <alex@aspect.dev>
102 lines
3.9 KiB
Python
102 lines
3.9 KiB
Python
"""Implementation for yq rule"""
|
|
|
|
load("//lib:stamping.bzl", "STAMP_ATTRS", "maybe_stamp")
|
|
|
|
_yq_attrs = dict({
|
|
"srcs": attr.label_list(
|
|
allow_files = True,
|
|
mandatory = True,
|
|
allow_empty = True,
|
|
),
|
|
"expression": attr.string(mandatory = False),
|
|
"args": attr.string_list(),
|
|
"outs": attr.output_list(mandatory = True),
|
|
"_parse_status_file_expression": attr.label(
|
|
allow_single_file = True,
|
|
default = Label("//lib/private:parse_status_file.yq"),
|
|
),
|
|
}, **STAMP_ATTRS)
|
|
|
|
def is_split_operation(args):
|
|
for arg in args:
|
|
if arg.startswith("-s") or arg.startswith("--split-exp"):
|
|
return True
|
|
return False
|
|
|
|
def _escape_path(path):
|
|
return "/".join([".." for t in path.split("/")]) + "/"
|
|
|
|
def _yq_impl(ctx):
|
|
yq_bin = ctx.toolchains["@aspect_bazel_lib//lib:yq_toolchain_type"].yqinfo.bin
|
|
|
|
outs = ctx.outputs.outs
|
|
args = ctx.attr.args[:]
|
|
inputs = ctx.files.srcs[:]
|
|
|
|
split_operation = is_split_operation(args)
|
|
|
|
if "eval" in args or "eval-all" in args:
|
|
fail("Do not pass 'eval' or 'eval-all' into yq; this is already set based on the number of srcs")
|
|
if not split_operation and len(outs) > 1:
|
|
fail("Cannot specify multiple outputs when -s or --split-exp is not set")
|
|
if "-i" in args or "--inplace" in args:
|
|
fail("Cannot use arg -i or --inplace as it is not bazel-idiomatic to update the input file; consider using write_source_files to write back to the source tree")
|
|
if len(ctx.attr.srcs) == 0 and "-n" not in args and "--null-input" not in args:
|
|
args = args + ["--null-input"]
|
|
|
|
stamp = maybe_stamp(ctx)
|
|
stamp_yaml = ctx.actions.declare_file("_%s_stamp.yaml" % ctx.label.name)
|
|
if stamp:
|
|
# create an action that gives a YAML representation of the stamp keys
|
|
ctx.actions.run_shell(
|
|
tools = [yq_bin],
|
|
inputs = [stamp.stable_status_file, stamp.volatile_status_file, ctx.file._parse_status_file_expression],
|
|
outputs = [stamp_yaml],
|
|
command = "{yq} --from-file {expression} {stable} {volatile} > {out}".format(
|
|
yq = yq_bin.path,
|
|
expression = ctx.file._parse_status_file_expression.path,
|
|
stable = stamp.stable_status_file.path,
|
|
volatile = stamp.volatile_status_file.path,
|
|
out = stamp_yaml.path,
|
|
),
|
|
mnemonic = "ConvertStatusToYaml",
|
|
)
|
|
else:
|
|
# create an empty stamp file as placeholder
|
|
ctx.actions.write(
|
|
output = stamp_yaml,
|
|
content = "{}",
|
|
)
|
|
inputs.append(stamp_yaml)
|
|
|
|
# For split operations, yq outputs files in the same directory so we
|
|
# must cd to the correct output dir before executing it
|
|
bin_dir = "/".join([ctx.bin_dir.path, ctx.label.package]) if ctx.label.package else ctx.bin_dir.path
|
|
escape_bin_dir = _escape_path(bin_dir)
|
|
cmd = "cd {bin_dir} && {yq} {args} {eval_cmd} {expression} {sources} {maybe_out}".format(
|
|
bin_dir = ctx.bin_dir.path + "/" + ctx.label.package,
|
|
yq = escape_bin_dir + yq_bin.path,
|
|
eval_cmd = "eval" if len(inputs) <= 1 else "eval-all",
|
|
args = " ".join(args),
|
|
expression = "'%s'" % ctx.attr.expression if ctx.attr.expression else "",
|
|
sources = " ".join(["'%s%s'" % (escape_bin_dir, file.path) for file in ctx.files.srcs]),
|
|
# In the -s/--split-exr case, the out file names are determined by the yq expression
|
|
maybe_out = (" > %s%s" % (escape_bin_dir, outs[0].path)) if len(outs) == 1 else "",
|
|
)
|
|
|
|
ctx.actions.run_shell(
|
|
tools = [yq_bin],
|
|
inputs = inputs,
|
|
outputs = outs,
|
|
command = cmd,
|
|
env = {"STAMP": escape_bin_dir + stamp_yaml.path},
|
|
mnemonic = "Yq",
|
|
)
|
|
|
|
return DefaultInfo(files = depset(outs), runfiles = ctx.runfiles(outs))
|
|
|
|
yq_lib = struct(
|
|
attrs = _yq_attrs,
|
|
implementation = _yq_impl,
|
|
)
|