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1
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+#
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+# Copyright (C) 2018 Bloomberg LLC
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3
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+#
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+# This program is free software; you can redistribute it and/or
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+# modify it under the terms of the GNU Lesser General Public
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+# License as published by the Free Software Foundation; either
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+# version 2 of the License, or (at your option) any later version.
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+#
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+# This library is distributed in the hope that it will be useful,
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+# but WITHOUT ANY WARRANTY; without even the implied warranty of
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+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+# Lesser General Public License for more details.
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+#
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+# You should have received a copy of the GNU Lesser General Public
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+# License along with this library. If not, see <http://www.gnu.org/licenses/>.
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+#
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+# Authors:
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+# Jim MacArthur <jim macarthur codethink co uk>
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+
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+"""
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+CasBasedDirectory
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+=========
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+
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+Implementation of the Directory class which backs onto a Merkle-tree based content
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+addressable storage system.
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+
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+See also: :ref:`sandboxing`.
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+"""
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+
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+from collections import OrderedDict
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+
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+import os
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+import tempfile
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+import stat
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+
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+from .._protos.build.bazel.remote.execution.v2 import remote_execution_pb2
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+from .._exceptions import BstError
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+from .directory import Directory, VirtualDirectoryError
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+from ._filebaseddirectory import FileBasedDirectory
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+from ..utils import FileListResult, safe_copy, list_relative_paths
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+from .._artifactcache.cascache import CASCache
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+
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+
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+class IndexEntry():
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45
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+ """ Used in our index of names to objects to store the 'modified' flag
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+ for directory entries. Because we need both the remote_execution_pb2 object
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+ and our own Directory object for directory entries, we store both. For files
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+ and symlinks, only pb2_object is used. """
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+ def __init__(self, pb2_object, buildstream_object=None, modified=False):
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+ self.pb2_object = pb2_object
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+ self.buildstream_object = buildstream_object
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+ self.modified = modified
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+
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+
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+# CasBasedDirectory intentionally doesn't call its superclass constuctor,
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+# which is meant to be unimplemented.
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+# pylint: disable=super-init-not-called
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+
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+class CasBasedDirectory(Directory):
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60
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+ """
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+ CAS-based directories can have two names; one is a 'common name' which has no effect
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+ on functionality, and the 'filename'. If a CasBasedDirectory has a parent, then 'filename'
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+ must be the name of an entry in the parent directory's index which points to this object.
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+ This is used to inform a parent directory that it must update the given hash for this
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+ object when this object changes.
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+
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+ Typically a top-level CasBasedDirectory will have a common_name and no filename, and
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+ subdirectories wil have a filename and no common_name. common_name can used to identify
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+ CasBasedDirectory objects in a log file, since they have no unique position in a file
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+ system.
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+ """
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+
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+ # Two constants which define the separators used by the remote execution API.
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+ _pb2_path_sep = "/"
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+ _bp2_absolute_path_prefix = "/"
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+
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+ def __init__(self, context, ref=None, parent=None, common_name="untitled", filename=None):
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+ self.context = context
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+ self.cas_directory = os.path.join(context.artifactdir, 'cas')
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+ self.filename = filename
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+ self.common_name = common_name
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+ self.pb2_directory = remote_execution_pb2.Directory()
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+ self.cas_cache = CASCache(context)
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+ if ref:
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+ with open(self.cas_cache.objpath(ref), 'rb') as f:
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+ self.pb2_directory.ParseFromString(f.read())
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+
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+ self.ref = ref
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+ self.index = OrderedDict()
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+ self.parent = parent
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+ self._directory_read = False
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+ self._populate_index()
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+
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+ def _populate_index(self):
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+ if self._directory_read:
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+ return
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+ for entry in self.pb2_directory.directories:
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+ buildStreamDirectory = CasBasedDirectory(self.context, ref=entry.digest,
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+ parent=self, filename=entry.name)
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+ self.index[entry.name] = IndexEntry(entry, buildstream_object=buildStreamDirectory)
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+ for entry in self.pb2_directory.files:
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+ self.index[entry.name] = IndexEntry(entry)
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+ for entry in self.pb2_directory.symlinks:
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+ self.index[entry.name] = IndexEntry(entry)
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+ self._directory_read = True
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+
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+ def _recalculate_recursing_up(self, caller=None):
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+ """Recalcuate the hash for this directory and store the results in
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+ the cache. If this directory has a parent, tell it to
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+ recalculate (since changing this directory changes an entry in
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+ the parent).
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+
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+ """
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+ self.ref = self.cas_cache.add_object(buffer=self.pb2_directory.SerializeToString())
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115
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+ if caller:
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+ old_dir = self._find_pb2_entry(caller.filename)
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+ self.cas_cache.add_object(digest=old_dir.digest, buffer=caller.pb2_directory.SerializeToString())
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+ if self.parent:
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+ self.parent._recalculate_recursing_up(self)
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+
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+ def _recalculate_recursing_down(self, parent=None):
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+ """Recalcuate the hash for this directory and any
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+ subdirectories. Hashes for subdirectories should be calculated
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+ and stored after a significant operation (e.g. an
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+ import_files() call) but not after adding each file, as that
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+ is extremely wasteful.
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+
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+ """
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+ for entry in self.pb2_directory.directories:
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+ self.index[entry.name].buildstream_object._recalculate_recursing_down(entry)
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+
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+ if parent:
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+ self.ref = self.cas_cache.add_object(digest=parent.digest, buffer=self.pb2_directory.SerializeToString())
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+ else:
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+ self.ref = self.cas_cache.add_object(buffer=self.pb2_directory.SerializeToString())
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+ # We don't need to do anything more than that; files were already added ealier, and symlinks are
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+ # part of the directory structure.
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+
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+ def _find_pb2_entry(self, name):
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+ if name in self.index:
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+ return self.index[name].pb2_object
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+ return None
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+
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+ def _add_directory(self, name):
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+ if name in self.index:
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+ newdir = self.index[name].buildstream_object
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+ if not isinstance(newdir, CasBasedDirectory):
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+ # TODO: This may not be an actual error; it may actually overwrite it
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+ raise VirtualDirectoryError("New directory {} in {} would overwrite existing non-directory of type {}"
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+ .format(name, str(self), type(newdir)))
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+ dirnode = self._find_pb2_entry(name)
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+ else:
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+ newdir = CasBasedDirectory(self.context, parent=self, filename=name)
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+ dirnode = self.pb2_directory.directories.add()
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+
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+ dirnode.name = name
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+
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+ # Calculate the hash for an empty directory
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+ new_directory = remote_execution_pb2.Directory()
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+ self.cas_cache.add_object(digest=dirnode.digest, buffer=new_directory.SerializeToString())
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+ self.index[name] = IndexEntry(dirnode, buildstream_object=newdir)
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+ return newdir
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+
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+ def _add_new_file(self, basename, filename):
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+ filenode = self.pb2_directory.files.add()
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166
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+ filenode.name = filename
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+ self.cas_cache.add_object(digest=filenode.digest, path=os.path.join(basename, filename))
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168
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+ is_executable = os.access(os.path.join(basename, filename), os.X_OK)
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+ filenode.is_executable = is_executable
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+ self.index[filename] = IndexEntry(filenode, modified=(filename in self.index))
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+
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+ def _add_new_link(self, basename, filename):
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173
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+ existing_link = self._find_pb2_entry(filename)
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+ if existing_link:
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+ symlinknode = existing_link
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+ else:
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+ symlinknode = self.pb2_directory.symlinks.add()
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+ symlinknode.name = filename
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179
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+ # A symlink node has no digest.
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+ symlinknode.target = os.readlink(os.path.join(basename, filename))
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+ self.index[filename] = IndexEntry(symlinknode, modified=(existing_link is not None))
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+
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183
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+ def delete_entry(self, name):
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184
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+ for collection in [self.pb2_directory.files, self.pb2_directory.symlinks, self.pb2_directory.directories]:
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185
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+ if name in collection:
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+ collection.remove(name)
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187
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+ if name in self.index:
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+ del self.index[name]
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189
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+
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190
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+ def descend(self, subdirectory_spec, create=False):
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191
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+ """Descend one or more levels of directory hierarchy and return a new
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192
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+ Directory object for that directory.
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193
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+
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194
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+ Arguments:
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195
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+ * subdirectory_spec (list of strings): A list of strings which are all directory
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196
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+ names.
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197
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+ * create (boolean): If this is true, the directories will be created if
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198
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+ they don't already exist.
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199
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+
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200
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+ Note: At the moment, creating a directory by descending does
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201
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+ not update this object in the CAS cache. However, performing
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202
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+ an import_files() into a subdirectory of any depth obtained by
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203
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+ descending from this object *will* cause this directory to be
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204
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+ updated and stored.
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205
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+
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206
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+ """
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207
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+
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208
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+ # It's very common to send a directory name instead of a list and this causes
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209
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+ # bizarre errors, so check for it here
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210
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+ if not isinstance(subdirectory_spec, list):
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211
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+ subdirectory_spec = [subdirectory_spec]
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212
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+
|
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213
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+ # Because of the way split works, it's common to get a list which begins with
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214
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+ # an empty string. Detect these and remove them.
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215
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+ while subdirectory_spec and subdirectory_spec[0] == "":
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216
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+ subdirectory_spec.pop(0)
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217
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+
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218
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+ # Descending into [] returns the same directory.
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219
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+ if not subdirectory_spec:
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220
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+ return self
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221
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+
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222
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+ if subdirectory_spec[0] in self.index:
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+ entry = self.index[subdirectory_spec[0]].buildstream_object
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224
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+ if isinstance(entry, CasBasedDirectory):
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225
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+ return entry.descend(subdirectory_spec[1:], create)
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226
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+ else:
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227
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+ error = "Cannot descend into {}, which is a '{}' in the directory {}"
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228
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+ raise VirtualDirectoryError(error.format(subdirectory_spec[0],
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229
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+ type(entry).__name__,
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230
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+ self))
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231
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+ else:
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232
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+ if create:
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233
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+ newdir = self._add_directory(subdirectory_spec[0])
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234
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+ return newdir.descend(subdirectory_spec[1:], create)
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235
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+ else:
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236
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+ error = "No entry called '{}' found in {}. There are directories called {}."
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237
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+ directory_list = ",".join([entry.name for entry in self.pb2_directory.directories])
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238
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+ raise VirtualDirectoryError(error.format(subdirectory_spec[0], str(self),
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239
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+ directory_list))
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240
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+ return None
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241
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+
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242
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+ def find_root(self):
|
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|
243
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+ """ Finds the root of this directory tree by following 'parent' until there is
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244
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+ no parent. """
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245
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+ if self.parent:
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246
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+ return self.parent.find_root()
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247
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+ else:
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248
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+ return self
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249
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+
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|
250
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+ def _resolve_symlink_or_directory(self, name):
|
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|
251
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+ """Used only by _import_files_from_directory. Tries to resolve a
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252
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+ directory name or symlink name. 'name' must be an entry in this
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253
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+ directory. It must be a single symlink or directory name, not a path
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254
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+ separated by path separators. If it's an existing directory name, it
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255
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+ just returns the Directory object for that. If it's a symlink, it will
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256
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+ attempt to find the target of the symlink and return that as a
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257
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+ Directory object.
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258
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+
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259
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+ If a symlink target doesn't exist, it will attempt to create it
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260
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+ as a directory as long as it's within this directory tree.
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261
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+ """
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262
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+
|
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|
263
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+ if isinstance(self.index[name].buildstream_object, Directory):
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|
264
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+ return self.index[name].buildstream_object
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|
265
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+ # OK then, it's a symlink
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266
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+ symlink = self._find_pb2_entry(name)
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267
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+ absolute = symlink.target.startswith(CasBasedDirectory._pb2_absolute_path_prefix)
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|
268
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+ if absolute:
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269
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+ root = self.find_root()
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270
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+ else:
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271
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+ root = self
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272
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+ directory = root
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273
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+ components = symlink.target.split(CasBasedDirectory._pb2_path_sep)
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274
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+ for c in components:
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275
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+ if c == "..":
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276
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+ directory = directory.parent
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277
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+ else:
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|
278
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+ directory = directory.descend(c, create=True)
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279
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+ return directory
|
|
|
280
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+
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|
|
281
|
+ def _check_replacement(self, name, path_prefix, fileListResult):
|
|
|
282
|
+ """ Checks whether 'name' exists, and if so, whether we can overwrite it.
|
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|
283
|
+ If we can, add the name to 'overwritten_files' and delete the existing entry.
|
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|
284
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+ Returns 'True' if the import should go ahead.
|
|
|
285
|
+ fileListResult.overwritten and fileListResult.ignore are updated depending
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|
286
|
+ on the result. """
|
|
|
287
|
+ existing_entry = self._find_pb2_entry(name)
|
|
|
288
|
+ relative_pathname = os.path.join(path_prefix, name)
|
|
|
289
|
+ if existing_entry is None:
|
|
|
290
|
+ return True
|
|
|
291
|
+ if (isinstance(existing_entry,
|
|
|
292
|
+ (remote_execution_pb2.FileNode, remote_execution_pb2.SymlinkNode))):
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|
|
293
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+ self.delete_entry(name)
|
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|
294
|
+ fileListResult.overwritten.append(relative_pathname)
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|
|
295
|
+ return True
|
|
|
296
|
+ elif isinstance(existing_entry, remote_execution_pb2.DirectoryNode):
|
|
|
297
|
+ # If 'name' maps to a DirectoryNode, then there must be an entry in index
|
|
|
298
|
+ # pointing to another Directory.
|
|
|
299
|
+ if self.index[name].buildstream_object.is_empty():
|
|
|
300
|
+ self.delete_entry(name)
|
|
|
301
|
+ fileListResult.overwritten.append(relative_pathname)
|
|
|
302
|
+ return True
|
|
|
303
|
+ else:
|
|
|
304
|
+ # We can't overwrite a non-empty directory, so we just ignore it.
|
|
|
305
|
+ fileListResult.ignored.append(relative_pathname)
|
|
|
306
|
+ return False
|
|
|
307
|
+ raise VirtualDirectoryError("Entry '{}' is not a recognised file/link/directory and not None; it is {}"
|
|
|
308
|
+ .format(name, type(existing_entry)))
|
|
|
309
|
+
|
|
|
310
|
+ def _import_directory_recursively(self, directory_name, source_directory, remaining_path, path_prefix):
|
|
|
311
|
+ """ _import_directory_recursively and _import_files_from_directory will be called alternately
|
|
|
312
|
+ as a directory tree is descended. """
|
|
|
313
|
+ if directory_name in self.index:
|
|
|
314
|
+ subdir = self._resolve_symlink_or_directory(directory_name)
|
|
|
315
|
+ else:
|
|
|
316
|
+ subdir = self._add_directory(directory_name)
|
|
|
317
|
+ new_path_prefix = os.path.join(path_prefix, directory_name)
|
|
|
318
|
+ subdir_result = subdir._import_files_from_directory(os.path.join(source_directory, directory_name),
|
|
|
319
|
+ [os.path.sep.join(remaining_path)],
|
|
|
320
|
+ path_prefix=new_path_prefix)
|
|
|
321
|
+ return subdir_result
|
|
|
322
|
+
|
|
|
323
|
+ def _import_files_from_directory(self, source_directory, files, path_prefix=""):
|
|
|
324
|
+ """ Imports files from a traditional directory """
|
|
|
325
|
+ result = FileListResult()
|
|
|
326
|
+ for entry in sorted(files):
|
|
|
327
|
+ split_path = entry.split(os.path.sep)
|
|
|
328
|
+ # The actual file on the FS we're importing
|
|
|
329
|
+ import_file = os.path.join(source_directory, entry)
|
|
|
330
|
+ # The destination filename, relative to the root where the import started
|
|
|
331
|
+ relative_pathname = os.path.join(path_prefix, entry)
|
|
|
332
|
+ if len(split_path) > 1:
|
|
|
333
|
+ directory_name = split_path[0]
|
|
|
334
|
+ # Hand this off to the importer for that subdir. This will only do one file -
|
|
|
335
|
+ # a better way would be to hand off all the files in this subdir at once.
|
|
|
336
|
+ subdir_result = self._import_directory_recursively(directory_name, source_directory,
|
|
|
337
|
+ split_path[1:], path_prefix)
|
|
|
338
|
+ result.combine(subdir_result)
|
|
|
339
|
+ elif os.path.islink(import_file):
|
|
|
340
|
+ if self._check_replacement(entry, path_prefix, result):
|
|
|
341
|
+ self._add_new_link(source_directory, entry)
|
|
|
342
|
+ result.files_written.append(relative_pathname)
|
|
|
343
|
+ elif os.path.isdir(import_file):
|
|
|
344
|
+ # A plain directory which already exists isn't a problem; just ignore it.
|
|
|
345
|
+ if entry not in self.index:
|
|
|
346
|
+ self._add_directory(entry)
|
|
|
347
|
+ elif os.path.isfile(import_file):
|
|
|
348
|
+ if self._check_replacement(entry, path_prefix, result):
|
|
|
349
|
+ self._add_new_file(source_directory, entry)
|
|
|
350
|
+ result.files_written.append(relative_pathname)
|
|
|
351
|
+ return result
|
|
|
352
|
+
|
|
|
353
|
+ def import_files(self, external_pathspec, *, files=None,
|
|
|
354
|
+ report_written=True, update_utimes=False,
|
|
|
355
|
+ can_link=False):
|
|
|
356
|
+ """Imports some or all files from external_path into this directory.
|
|
|
357
|
+
|
|
|
358
|
+ Keyword arguments: external_pathspec: Either a string
|
|
|
359
|
+ containing a pathname, or a Directory object, to use as the
|
|
|
360
|
+ source.
|
|
|
361
|
+
|
|
|
362
|
+ files (list of strings): A list of all the files relative to
|
|
|
363
|
+ the external_pathspec to copy. If 'None' is supplied, all
|
|
|
364
|
+ files are copied.
|
|
|
365
|
+
|
|
|
366
|
+ report_written (bool): Return the full list of files
|
|
|
367
|
+ written. Defaults to true. If false, only a list of
|
|
|
368
|
+ overwritten files is returned.
|
|
|
369
|
+
|
|
|
370
|
+ update_utimes (bool): Currently ignored, since CAS does not store utimes.
|
|
|
371
|
+
|
|
|
372
|
+ can_link (bool): Ignored, since hard links do not have any meaning within CAS.
|
|
|
373
|
+ """
|
|
|
374
|
+ if isinstance(external_pathspec, FileBasedDirectory):
|
|
|
375
|
+ source_directory = external_pathspec.get_underlying_directory()
|
|
|
376
|
+ elif isinstance(external_pathspec, CasBasedDirectory):
|
|
|
377
|
+ # TODO: This transfers from one CAS to another via the
|
|
|
378
|
+ # filesystem, which is very inefficient. Alter this so it
|
|
|
379
|
+ # transfers refs across directly.
|
|
|
380
|
+ with tempfile.TemporaryDirectory(prefix="roundtrip") as tmpdir:
|
|
|
381
|
+ external_pathspec.export_files(tmpdir)
|
|
|
382
|
+ if files is None:
|
|
|
383
|
+ files = list_relative_paths(tmpdir)
|
|
|
384
|
+ result = self._import_files_from_directory(tmpdir, files=files)
|
|
|
385
|
+ return result
|
|
|
386
|
+ else:
|
|
|
387
|
+ source_directory = external_pathspec
|
|
|
388
|
+
|
|
|
389
|
+ if files is None:
|
|
|
390
|
+ files = list_relative_paths(source_directory)
|
|
|
391
|
+
|
|
|
392
|
+ # TODO: No notice is taken of report_written, update_utimes or can_link.
|
|
|
393
|
+ # Current behaviour is to fully populate the report, which is inefficient,
|
|
|
394
|
+ # but still correct.
|
|
|
395
|
+ result = self._import_files_from_directory(source_directory, files=files)
|
|
|
396
|
+
|
|
|
397
|
+ # We need to recalculate and store the hashes of all directories both
|
|
|
398
|
+ # up and down the tree; we have changed our directory by importing files
|
|
|
399
|
+ # which changes our hash and all our parents' hashes of us. The trees
|
|
|
400
|
+ # lower down need to be stored in the CAS as they are not automatically
|
|
|
401
|
+ # added during construction.
|
|
|
402
|
+ self._recalculate_recursing_down()
|
|
|
403
|
+ if self.parent:
|
|
|
404
|
+ self.parent._recalculate_recursing_up(self)
|
|
|
405
|
+ return result
|
|
|
406
|
+
|
|
|
407
|
+ def set_deterministic_mtime(self):
|
|
|
408
|
+ """ Sets a static modification time for all regular files in this directory.
|
|
|
409
|
+ Since we don't store any modification time, we don't need to do anything.
|
|
|
410
|
+ """
|
|
|
411
|
+ pass
|
|
|
412
|
+
|
|
|
413
|
+ def set_deterministic_user(self):
|
|
|
414
|
+ """ Sets all files in this directory to the current user's euid/egid.
|
|
|
415
|
+ We also don't store user data, so this can be ignored.
|
|
|
416
|
+ """
|
|
|
417
|
+ pass
|
|
|
418
|
+
|
|
|
419
|
+ def export_files(self, to_directory, *, can_link=False, can_destroy=False):
|
|
|
420
|
+ """Copies everything from this into to_directory, which must be the name
|
|
|
421
|
+ of a traditional filesystem directory.
|
|
|
422
|
+
|
|
|
423
|
+ Arguments:
|
|
|
424
|
+
|
|
|
425
|
+ to_directory (string): a path outside this directory object
|
|
|
426
|
+ where the contents will be copied to.
|
|
|
427
|
+
|
|
|
428
|
+ can_link (bool): Whether we can create hard links in to_directory
|
|
|
429
|
+ instead of copying.
|
|
|
430
|
+
|
|
|
431
|
+ can_destroy (bool): Whether we can destroy elements in this
|
|
|
432
|
+ directory to export them (e.g. by renaming them as the
|
|
|
433
|
+ target).
|
|
|
434
|
+
|
|
|
435
|
+ """
|
|
|
436
|
+
|
|
|
437
|
+ if not os.path.exists(to_directory):
|
|
|
438
|
+ os.mkdir(to_directory)
|
|
|
439
|
+
|
|
|
440
|
+ for entry in self.pb2_directory.directories:
|
|
|
441
|
+ if entry.name not in self.index:
|
|
|
442
|
+ raise VirtualDirectoryError("CasDir {} contained {} in directories but not in the index"
|
|
|
443
|
+ .format(str(self), entry.name))
|
|
|
444
|
+ if not self._directory_read:
|
|
|
445
|
+ raise VirtualDirectoryError("CasDir {} has not been indexed yet".format(str(self)))
|
|
|
446
|
+ dest_dir = os.path.join(to_directory, entry.name)
|
|
|
447
|
+ if not os.path.exists(dest_dir):
|
|
|
448
|
+ os.mkdir(dest_dir)
|
|
|
449
|
+ target = self.descend([entry.name])
|
|
|
450
|
+ target.export_files(dest_dir)
|
|
|
451
|
+ for entry in self.pb2_directory.files:
|
|
|
452
|
+ # Extract the entry to a single file
|
|
|
453
|
+ dest_name = os.path.join(to_directory, entry.name)
|
|
|
454
|
+ src_name = self.cas_cache.objpath(entry.digest)
|
|
|
455
|
+ safe_copy(src_name, dest_name)
|
|
|
456
|
+ if entry.is_executable:
|
|
|
457
|
+ os.chmod(dest_name, stat.S_IRUSR | stat.S_IWUSR | stat.S_IXUSR |
|
|
|
458
|
+ stat.S_IRGRP | stat.S_IXGRP |
|
|
|
459
|
+ stat.S_IROTH | stat.S_IXOTH)
|
|
|
460
|
+ for entry in self.pb2_directory.symlinks:
|
|
|
461
|
+ src_name = os.path.join(to_directory, entry.name)
|
|
|
462
|
+ target_name = entry.target
|
|
|
463
|
+ try:
|
|
|
464
|
+ os.symlink(target_name, src_name)
|
|
|
465
|
+ except FileExistsError as e:
|
|
|
466
|
+ raise BstError(("Cannot create a symlink named {} pointing to {}." +
|
|
|
467
|
+ " The original error was: {}").
|
|
|
468
|
+ format(src_name, entry.target, e))
|
|
|
469
|
+
|
|
|
470
|
+ def export_to_tar(self, tarfile, destination_dir, mtime=0):
|
|
|
471
|
+ raise NotImplementedError()
|
|
|
472
|
+
|
|
|
473
|
+ def mark_changed(self):
|
|
|
474
|
+ """ It should not be possible to externally modify a CAS-based
|
|
|
475
|
+ directory at the moment."""
|
|
|
476
|
+ raise NotImplementedError()
|
|
|
477
|
+
|
|
|
478
|
+ def is_empty(self):
|
|
|
479
|
+ """ Return true if this directory has no files, subdirectories or links in it.
|
|
|
480
|
+ """
|
|
|
481
|
+ return len(self.index) == 0
|
|
|
482
|
+
|
|
|
483
|
+ def mark_unmodified(self):
|
|
|
484
|
+ """ Marks all files in this directory (recursively) as unmodified.
|
|
|
485
|
+ """
|
|
|
486
|
+ # TODO: We don't actually mark our own directory unmodified
|
|
|
487
|
+ # here, because we can't get to the containing IndexEntry -
|
|
|
488
|
+ # just the objects we contain.
|
|
|
489
|
+ for i in self.index.values():
|
|
|
490
|
+ i.modified = False
|
|
|
491
|
+ if isinstance(i.buildstream_object, CasBasedDirectory):
|
|
|
492
|
+ i.buildstream_object.mark_unmodified()
|
|
|
493
|
+
|
|
|
494
|
+ def list_modified_paths(self):
|
|
|
495
|
+ """Provide a list of relative paths which have been modified since the
|
|
|
496
|
+ last call to mark_unmodified.
|
|
|
497
|
+
|
|
|
498
|
+ Return value: List(str) - list of modified paths
|
|
|
499
|
+ """
|
|
|
500
|
+
|
|
|
501
|
+ filelist = []
|
|
|
502
|
+ for (k, v) in self.index.items():
|
|
|
503
|
+ if isinstance(v.buildstream_object, CasBasedDirectory):
|
|
|
504
|
+ filelist.extend([k + os.path.sep + x for x in v.buildstream_object.list_modified_paths()])
|
|
|
505
|
+ elif isinstance(v.pb2_object, remote_execution_pb2.FileNode) and v.modified:
|
|
|
506
|
+ filelist.append(k)
|
|
|
507
|
+ return filelist
|
|
|
508
|
+
|
|
|
509
|
+ def list_relative_paths(self):
|
|
|
510
|
+ """Provide a list of all relative paths.
|
|
|
511
|
+
|
|
|
512
|
+ NOTE: This list is not in the same order as utils.list_relative_paths.
|
|
|
513
|
+
|
|
|
514
|
+ Return value: List(str) - list of all paths
|
|
|
515
|
+ """
|
|
|
516
|
+
|
|
|
517
|
+ filelist = []
|
|
|
518
|
+ for (k, v) in self.index.items():
|
|
|
519
|
+ if isinstance(v.buildstream_object, CasBasedDirectory):
|
|
|
520
|
+ filelist.extend([k + os.path.sep + x for x in v.buildstream_object.list_relative_paths()])
|
|
|
521
|
+ elif isinstance(v.pb2_object, remote_execution_pb2.FileNode):
|
|
|
522
|
+ filelist.append(k)
|
|
|
523
|
+ return filelist
|
|
|
524
|
+
|
|
|
525
|
+ def _get_identifier(self):
|
|
|
526
|
+ path = ""
|
|
|
527
|
+ if self.parent:
|
|
|
528
|
+ path = self.parent._get_identifier()
|
|
|
529
|
+ if self.filename:
|
|
|
530
|
+ path += "/" + self.filename
|
|
|
531
|
+ else:
|
|
|
532
|
+ path += "/" + self.common_name
|
|
|
533
|
+ return path
|
|
|
534
|
+
|
|
|
535
|
+ def __str__(self):
|
|
|
536
|
+ return "[CAS:{}]".format(self._get_identifier())
|
|
|
537
|
+
|
|
|
538
|
+ def get_underlying_directory(self):
|
|
|
539
|
+ """ There is no underlying directory for a CAS-backed directory, so
|
|
|
540
|
+ throw an exception. """
|
|
|
541
|
+ raise VirtualDirectoryError("get_underlying_directory was called on a CAS-backed directory," +
|
|
|
542
|
+ " which has no underlying directory.")
|
