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process_folder_creation.py
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process_folder_creation.py
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# Copyright (c) 2018 Shotgun Software Inc.
#
# CONFIDENTIAL AND PROPRIETARY
#
# This work is provided "AS IS" and subject to the Shotgun Pipeline Toolkit
# Source Code License included in this distribution package. See LICENSE.
# By accessing, using, copying or modifying this work you indicate your
# agreement to the Shotgun Pipeline Toolkit Source Code License. All rights
# not expressly granted therein are reserved by Shotgun Software Inc.
"""
This hook is invoked during folder creation when :meth:`sgtk.Sgtk.create_filesystem_structure` is
called.
"""
from tank import Hook
import os
import sys
import shutil
class ProcessFolderCreation(Hook):
def execute(self, items, preview_mode, **kwargs):
"""
Creates a list of files and folders.
The default implementation creates files and folders recursively using
open permissions.
:param list(dict): List of actions that needs to take place.
Six different types of actions are supported.
**Standard Folder**
This represents a standard folder in the file system which is not associated
with anything in Shotgun. It contains the following keys:
- **action** (:class:`str`) - ``folder``
- **metadata** (:class:`dict`) - The configuration yaml data for this item
- **path** (:class:`str`) - path on disk to the item
**Entity Folder**
This represents a folder in the file system which is associated with a
Shotgun entity. It contains the following keys:
- **action** (:class:`str`) - ``entity_folder``
- **metadata** (:class:`dict`) - The configuration yaml data for this item
- **path** (:class:`str`) - path on disk to the item
- **entity** (:class:`dict`) - Shotgun entity link with keys ``type``, ``id`` and ``name``.
**Remote Entity Folder**
This is the same as an entity folder, except that it was originally
created in another location. A remote folder request means that your
local toolkit instance has detected that folders have been created by
a different file system setup. It contains the following keys:
- **action** (:class:`str`) - ``remote_entity_folder``
- **metadata** (:class:`dict`) - The configuration yaml data for this item
- **path** (:class:`str`) - path on disk to the item
- **entity** (:class:`dict`) - Shotgun entity link with keys ``type``, ``id`` and ``name``.
**File Copy**
This represents a file copy operation which should be carried out.
It contains the following keys:
- **action** (:class:`str`) - ``copy``
- **metadata** (:class:`dict`) - The configuration yaml data associated with the directory level
on which this object exists.
- **source_path** (:class:`str`) - location of the file that should be copied
- **target_path** (:class:`str`) - target location to where the file should be copied.
**File Creation**
This is similar to the file copy, but instead of a source path, a chunk
of data is specified. It contains the following keys:
- **action** (:class:`str`) - ``create_file``
- **metadata** (:class:`dict`) - The configuration yaml data associated with the directory level
on which this object exists.
- **content** (:class:`str`) -- file content
- **target_path** (:class:`str`) -- target location to where the file should be copied.
**Symbolic Links**
This represents a request that a symbolic link is created. Note that symbolic links are not
supported in the same way on all operating systems. The default hook therefore does not
implement symbolic link support on Windows systems. If you want to add symbolic link support
on windows, simply copy this hook to your project configuration and make the necessary
modifications.
- **action** (:class:`str`) - ``symlink``
- **metadata** (:class:`dict`) - The raw configuration yaml data associated with symlink yml config file.
- **path** (:class:`str`) - the path to the symbolic link
- **target** (:class:`str`) - the target to which the symbolic link should point
:returns: List of files and folders that have been created.
:rtype: list(str)
"""
# set the umask so that we get true permissions
old_umask = os.umask(0)
locations = []
try:
# loop through our list of items
for i in items:
action = i.get("action")
if action in ["entity_folder", "folder"]:
# folder creation
path = i.get("path")
if not os.path.exists(path):
if not preview_mode:
# create the folder using open permissions
os.makedirs(path, 0777)
locations.append(path)
elif action == "remote_entity_folder":
# Remote folder creation
#
# NOTE! This action happens when another user has created
# a folder on their machine and we are syncing our local path
# cache to be aware of this folder's existance.
#
# For a traditional setup, where the project storage is shared,
# there is no need to do I/O for remote folders - these folders
# have already been created on the remote storage so you have access
# to them already.
#
# On a setup where each user or group of users is attached to
# different, independendent file storages, which are synced,
# it may be meaningful to "replay" the remote folder creation
# on the local system. This would result in the same folder
# scaffold on each disk which is storing project data.
#
# path = i.get("path")
# if not os.path.exists(path):
# if not preview_mode:
# # create the folder using open permissions
# os.makedirs(path, 0777)
# locations.append(path)
pass
elif action == "symlink":
# symbolic link
if sys.platform == "win32":
# no windows support
continue
path = i.get("path")
target = i.get("target")
# note use of lexists to check existance of symlink
# rather than what symlink is pointing at
if not os.path.lexists(path):
if not preview_mode:
os.symlink(target, path)
locations.append(path)
elif action == "copy":
# a file copy
source_path = i.get("source_path")
target_path = i.get("target_path")
if not os.path.exists(target_path):
if not preview_mode:
# do a standard file copy
shutil.copy(source_path, target_path)
# set permissions to open
os.chmod(target_path, 0666)
locations.append(target_path)
elif action == "create_file":
# create a new file based on content
path = i.get("path")
parent_folder = os.path.dirname(path)
content = i.get("content")
if not os.path.exists(parent_folder) and not preview_mode:
os.makedirs(parent_folder, 0777)
if not os.path.exists(path):
if not preview_mode:
# create the file
fp = open(path, "wb")
fp.write(content)
fp.close()
# and set permissions to open
os.chmod(path, 0666)
locations.append(path)
finally:
# reset umask
os.umask(old_umask)
return locations