113 lines
4.0 KiB
Python
113 lines
4.0 KiB
Python
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# Copyright 2017 The TensorFlow Authors. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Utilities for defining TensorFlow Bazel dependencies."""
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_SINGLE_URL_WHITELIST = depset([
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"arm_compiler",
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"ortools_archive",
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])
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def _is_windows(ctx):
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return ctx.os.name.lower().find("windows") != -1
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def _wrap_bash_cmd(ctx, cmd):
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if _is_windows(ctx):
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bazel_sh = _get_env_var(ctx, "BAZEL_SH")
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if not bazel_sh:
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fail("BAZEL_SH environment variable is not set")
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cmd = [bazel_sh, "-l", "-c", " ".join(cmd)]
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return cmd
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def _get_env_var(ctx, name):
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if name in ctx.os.environ:
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return ctx.os.environ[name]
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else:
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return None
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# Executes specified command with arguments and calls 'fail' if it exited with
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# non-zero code
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def _execute_and_check_ret_code(repo_ctx, cmd_and_args):
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result = repo_ctx.execute(cmd_and_args, timeout=10)
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if result.return_code != 0:
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fail(("Non-zero return code({1}) when executing '{0}':\n" + "Stdout: {2}\n"
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+ "Stderr: {3}").format(" ".join(cmd_and_args), result.return_code,
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result.stdout, result.stderr))
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def _repos_are_siblings():
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return Label("@foo//bar").workspace_root.startswith("../")
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# Apply a patch_file to the repository root directory
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# Runs 'patch -p1'
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def _apply_patch(ctx, patch_file):
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# Don't check patch on Windows, because patch is only available under bash.
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if not _is_windows(ctx) and not ctx.which("patch"):
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fail("patch command is not found, please install it")
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cmd = _wrap_bash_cmd(
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ctx, ["patch", "-p1", "-d", ctx.path("."), "-i", ctx.path(patch_file)])
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_execute_and_check_ret_code(ctx, cmd)
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def _apply_delete(ctx, paths):
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for path in paths:
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if path.startswith("/"):
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fail("refusing to rm -rf path starting with '/': " + path)
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if ".." in path:
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fail("refusing to rm -rf path containing '..': " + path)
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cmd = _wrap_bash_cmd(ctx, ["rm", "-rf"] + [ctx.path(path) for path in paths])
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_execute_and_check_ret_code(ctx, cmd)
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def _bili_http_archive(ctx):
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""""
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if ("mirror.bazel.build" not in ctx.attr.urls[0] or
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(len(ctx.attr.urls) < 2 and
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ctx.attr.name not in _SINGLE_URL_WHITELIST)):
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fail("bili_http_archive(urls) must have redundant URLs. The " +
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"mirror.bazel.build URL must be present and it must come first. " +
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"Even if you don't have permission to mirror the file, please " +
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"put the correctly formatted mirror URL there anyway, because " +
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"someone will come along shortly thereafter and mirror the file.")
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"""
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ctx.download_and_extract(
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ctx.attr.urls,
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"",
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ctx.attr.sha256,
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ctx.attr.type,
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ctx.attr.strip_prefix)
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if ctx.attr.delete:
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_apply_delete(ctx, ctx.attr.delete)
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if ctx.attr.patch_file != None:
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_apply_patch(ctx, ctx.attr.patch_file)
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if ctx.attr.build_file != None:
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ctx.template("BUILD", ctx.attr.build_file, {
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"%prefix%": ".." if _repos_are_siblings() else "external",
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}, False)
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bili_http_archive = repository_rule(
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implementation=_bili_http_archive,
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attrs={
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"sha256": attr.string(mandatory=True),
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"urls": attr.string_list(mandatory=True, allow_empty=False),
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"strip_prefix": attr.string(),
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"type": attr.string(),
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"delete": attr.string_list(),
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"patch_file": attr.label(),
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"build_file": attr.label(),
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})
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"""Downloads and creates Bazel repos for dependencies.
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This is a swappable replacement for both http_archive() and
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new_http_archive() that offers some additional features. It also helps
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ensure best practices are followed.
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"""
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