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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at https://mozilla.org/MPL/2.0/.
import contextlib
import fnmatch
import io
import os
import pathlib
import shutil
import tarfile
import tempfile
from .docker import container_exec, container_get_archive, copy_file_to_container
from .downloads import DOWNLOADS
from .logging import log
from .utils import (
clang_toolchain,
create_tar_from_directory,
exec_and_log,
extract_tar_to_directory,
normalize_tar_archive,
)
class ContainerContext(object):
def __init__(self, container):
self.container = container
self.tools_path = "/tools"
@property
def is_isolated(self):
return True
def copy_file(self, source: pathlib.Path, dest_path=None, dest_name=None):
dest_name = dest_name or source.name
dest_path = dest_path or "/build"
copy_file_to_container(source, self.container, dest_path, dest_name)
def install_toolchain_archive(
self, build_dir, package_name, host_platform, version=None
):
entry = DOWNLOADS[package_name]
basename = "%s-%s-%s.tar" % (
package_name,
version or entry["version"],
host_platform,
)
p = build_dir / basename
self.copy_file(p)
self.run(["/bin/tar", "-C", "/tools", "-xf", "/build/%s" % p.name])
def install_artifact_archive(
self, build_dir, package_name, target_triple, build_options
):
entry = DOWNLOADS[package_name]
basename = "%s-%s-%s-%s.tar" % (
package_name,
entry["version"],
target_triple,
build_options,
)
p = build_dir / basename
self.copy_file(p)
self.run(["/bin/tar", "-C", "/tools", "-xf", "/build/%s" % p.name])
def install_toolchain(
self,
build_dir,
host_platform,
target_triple: str,
binutils=False,
musl=False,
clang=False,
):
if binutils:
self.install_toolchain_archive(build_dir, "binutils", host_platform)
if clang:
self.install_toolchain_archive(
build_dir, clang_toolchain(host_platform, target_triple), host_platform
)
if musl:
self.install_toolchain_archive(build_dir, "musl", host_platform)
def run(self, program, user="build", environment=None):
if isinstance(program, str) and not program.startswith("/"):
program = "/build/%s" % program
container_exec(self.container, program, user=user, environment=environment)
def get_tools_archive(self, dest, name):
log("copying container files to %s" % dest)
data = container_get_archive(self.container, "/build/out/tools/%s" % name)
with open(dest, "wb") as fh:
fh.write(data)
def get_file(self, path):
log("retrieving container file %s" % path)
data = io.BytesIO(container_get_archive(self.container, "/build/%s" % path))
with tarfile.open(fileobj=data) as tf:
for ti in tf:
return tf.extractfile(ti).read()
raise Exception("file not found")
def get_output_archive(self, path=None, as_tar=False):
p = "/build/out"
if path:
p += "/%s" % path
data = container_get_archive(self.container, p)
data = io.BytesIO(data)
data = normalize_tar_archive(data)
if as_tar:
return tarfile.open(fileobj=data)
else:
return data.getvalue()
def find_output_files(self, base_path, pattern):
command = ["/usr/bin/find", "/build/out/%s" % base_path, "-name", pattern]
for line in self.container.exec_run(command, user="build")[1].splitlines():
if not line.strip():
continue
yield line[len("/build/out/%s/" % base_path) :].decode("ascii")
class TempdirContext(object):
def __init__(self, td):
self.td = pathlib.Path(td)
self.tools_path = str(self.td / "tools")
@property
def is_isolated(self):
return False
def copy_file(self, source: pathlib.Path, dest_path=None, dest_name=None):
if dest_path:
dest_dir = self.td / dest_path
else:
dest_dir = self.td
dest_dir.mkdir(exist_ok=True)
dest_name = dest_name or source.name
log("copying %s to %s/%s" % (source, dest_dir, dest_name))
shutil.copy(source, dest_dir / dest_name)
def install_toolchain_archive(
self, build_dir, package_name, host_platform, version=None
):
entry = DOWNLOADS[package_name]
basename = "%s-%s-%s.tar" % (
package_name,
version or entry["version"],
host_platform,
)
p = build_dir / basename
dest_path = self.td / "tools"
log("extracting %s to %s" % (p, dest_path))
extract_tar_to_directory(p, dest_path)
def install_artifact_archive(
self, build_dir, package_name, target_triple, build_options
):
entry = DOWNLOADS[package_name]
basename = "%s-%s-%s-%s.tar" % (
package_name,
entry["version"],
target_triple,
build_options,
)
p = build_dir / basename
dest_path = self.td / "tools"
log("extracting %s to %s" % (p, dest_path))
extract_tar_to_directory(p, dest_path)
def install_toolchain(
self,
build_dir,
platform,
target_triple,
binutils=False,
musl=False,
clang=False,
):
if binutils:
self.install_toolchain_archive(build_dir, "binutils", platform)
if clang:
self.install_toolchain_archive(
build_dir, clang_toolchain(platform, target_triple), platform
)
if musl:
self.install_toolchain_archive(build_dir, "musl", platform)
def run(self, program, user="build", environment=None):
if user != "build":
raise Exception("cannot change user in temp directory builds")
if isinstance(program, str) and not program.startswith("/"):
program = str(self.td / program)
exec_and_log(program, cwd=self.td, env=environment)
def get_tools_archive(self, dest, name):
log("copying built files to %s" % dest)
with dest.open("wb") as fh:
create_tar_from_directory(fh, self.td / "out" / "tools")
def get_file(self, path):
log("retrieving file %s" % path)
p = self.td / path
with p.open("rb") as fh:
return fh.read()
def get_output_archive(self, path, as_tar=False):
p = self.td / "out" / path
data = io.BytesIO()
create_tar_from_directory(data, p, path_prefix=p.parts[-1])
data.seek(0)
data = normalize_tar_archive(data)
if as_tar:
return tarfile.open(fileobj=data)
else:
return data.getvalue()
def find_output_files(self, base_path, pattern):
base = str(self.td / "out" / base_path)
for root, dirs, files in os.walk(base):
dirs.sort()
for f in sorted(files):
if fnmatch.fnmatch(f, pattern):
full = os.path.join(root, f)
yield full[len(base) + 1 :]
@contextlib.contextmanager
def build_environment(client, image):
if client is not None:
container = client.containers.run(
image, command=["/bin/sleep", "86400"], detach=True
)
td = None
context = ContainerContext(container)
else:
container = None
td = tempfile.TemporaryDirectory()
context = TempdirContext(td.name)
try:
yield context
finally:
if container:
container.stop(timeout=0)
container.remove()
else:
td.cleanup()