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# Copyright 2018-2019 Florian Fischer <florian.fl.fischer@fau.de>
#
# This file is part of allocbench.
#
# allocbench is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# allocbench is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with allocbench. If not, see <http://www.gnu.org/licenses/>.
"""Artifact classes
An Artifact is a external ressource downloaded from the internet.
There are two flavours of artifacts available: archives and git repositories.
Both flavours are version controlled archive with a checksum and git repositories
with a specific checkout.
"""
import os
import subprocess
import src.globalvars
from src.util import print_info, print_debug, sha1sum
ARTIFACT_STORE_DIR = os.path.join(src.globalvars.allocbenchdir, "cache")
class Artifact:
"""Base class for external ressources"""
store = {}
def __init__(self, name):
if name in Artifact.store:
raise Exception(f'duplicate artifact "{name}"')
Artifact.store[name] = self
self.name = name
self.basedir = os.path.join(ARTIFACT_STORE_DIR, name)
def retrieve(self, cmd):
"""Run cmd to retrieve the artifact"""
os.makedirs(self.basedir, exist_ok=True)
print_info(f'Retrieving artifact "{self.name}"')
print_debug(f"By running: {cmd} in {self.basedir}")
proc = subprocess.run(
cmd,
cwd=self.basedir,
# stdout=subprocess.PIPE, stderr=subprocess.PIPE,
universal_newlines=True)
if proc.returncode != 0:
raise Exception(f"Failed to retrieve {self.name}")
class GitArtifact(Artifact):
"""External git repository"""
def __init__(self, name, url):
super().__init__(name)
self.url = url
self.repo = os.path.join(self.basedir, "repo")
def retrieve(self):
"""clone the git repo"""
super().retrieve(
["git", "clone", "--recursive", "--bare", self.url, "repo"])
def provide(self, checkout, location=None):
"""checkout new worktree at location"""
if not location:
location = os.path.join(self.basedir, checkout)
# check if we have already provided this checkout
if os.path.exists(location):
return location
# check if we have already retrieved the repo
if not os.path.exists(self.repo):
self.retrieve()
worktree_cmd = ["git", "worktree", "add", location, checkout]
print_debug("create new worktree. By running: ", worktree_cmd,
f"in {self.repo}")
proc = subprocess.run(
worktree_cmd,
cwd=self.repo,
# stdout=subprocess.PIPE, stderr=subprocess.PIPE,
universal_newlines=True)
if proc.returncode != 0:
raise Exception(f"Failed to provide {self.name}")
submodule_init_cmd = [
"git", "submodule", "update", "--init", "--recursive"
]
print_debug("update submodules in worktree. By running: ",
f"{submodule_init_cmd} in {self.repo}")
proc = subprocess.run(
submodule_init_cmd,
cwd=location,
# stdout=subprocess.PIPE, stderr=subprocess.PIPE,
universal_newlines=True)
return location
class ArchiveArtifact(Artifact):
"""External archive"""
supported_formats = ["tar"]
def __init__(self, name, url, format, checksum):
super().__init__(name)
self.url = url
if format not in self.supported_formats:
raise Exception(
f'Archive format "{format}" not in supported list {self.supported_formats}'
)
self.format = format
self.archive = os.path.join(self.basedir, f"{self.name}.{self.format}")
self.checksum = checksum
def retrieve(self):
"""download the archive"""
super().retrieve(["wget", "-O", self.archive, self.url])
def provide(self, location=None):
"""extract the archive"""
# Download archive
if not os.path.exists(self.archive):
self.retrieve()
# compare checksums
print_info("Verify checksum ...")
if sha1sum(self.archive) != self.checksum:
raise Exception(
f"Archive {self.archive} does not match provided checksum")
if not location:
location = os.path.join(self.basedir, "content")
# Check if we already provided the archive at location
if os.path.exists(location):
return location
os.makedirs(location, exist_ok=True)
# Extract archive
if self.format == "tar":
cmd = ["tar", "Cxf", location, self.archive]
print_debug(f"extract archive by running: {cmd} in {self.basedir}")
proc = subprocess.run(
cmd,
cwd=self.basedir,
# stdout=subprocess.PIPE, stderr=subprocess.PIPE,
universal_newlines=True)
if proc.returncode != 0:
raise Exception(f"Failed to extract {self.name}")
return location
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