def download(self,
url,
file_path=None,
auth=None,
retry=None,
retry_wait=None,
overwrite=False,
headers=None,
md5=None,
sha1=None,
sha256=None):
""" compatible interface of FileDownloader + checksum
"""
checksum = sha256 or sha1 or md5
# If it is a user download, it must contain a checksum
assert (not self._user_download) or (self._user_download and checksum)
h = self._get_hash(url, checksum)
lock = os.path.join(self._cache_folder, "locks", h)
cached_path = os.path.join(self._cache_folder, h)
with SimpleLock(lock):
# Once the process has access, make sure multithread is locked too
# as SimpleLock doesn't work multithread
thread_lock = self._thread_locks.setdefault(lock, Lock())
thread_lock.acquire()
try:
if not os.path.exists(cached_path):
try:
self._file_downloader.download(url, cached_path, auth,
retry, retry_wait,
overwrite, headers)
self._check_checksum(cached_path, md5, sha1, sha256)
except Exception:
if os.path.exists(cached_path):
os.remove(cached_path)
raise
else:
# specific check for corrupted cached files, will raise, but do nothing more
# user can report it or "rm -rf cache_folder/path/to/file"
try:
self._check_checksum(cached_path, md5, sha1, sha256)
except ConanException as e:
raise ConanException(
"%s\nCached downloaded file corrupted: %s" %
(str(e), cached_path))
if file_path is not None:
file_path = os.path.abspath(file_path)
mkdir(os.path.dirname(file_path))
shutil.copy2(cached_path, file_path)
else:
with open(cached_path, 'rb') as handle:
tmp = handle.read()
return tmp
finally:
thread_lock.release()
def _lock(self, lock_id):
lock = os.path.join(self._cache_folder, "locks", lock_id)
with SimpleLock(lock):
# Once the process has access, make sure multithread is locked too
# as SimpleLock doesn't work multithread
thread_lock = self._thread_locks.setdefault(lock, Lock())
thread_lock.acquire()
try:
yield
finally:
thread_lock.release()
def package_lock(self, package_ref):
if self._no_locks():
return NoLock()
return SimpleLock(
join(self.conan(package_ref.conan), "locks",
package_ref.package_id))
def package_lock(self, pref):
if self._no_lock:
return NoLock()
return SimpleLock(os.path.join(self._base_folder, "locks", pref.id))
def package_lock(self, pref):
if self._no_lock:
return NoLock()
return SimpleLock(os.path.join(self.conan(), "locks", pref.id))
