From e0f15cb3516a6003e6068558a16f9fdac556d461 Mon Sep 17 00:00:00 2001
From: Bianca Steffes <bianca.steffes@uni-saarland.de>
Date: Fri, 22 Apr 2022 13:57:11 +0200
Subject: [PATCH] Parallel Version implemented still very slow....

---
 fix_dates.py | 62 ++++++++++++++++++++++++++--------------------------
 1 file changed, 31 insertions(+), 31 deletions(-)

diff --git a/fix_dates.py b/fix_dates.py
index 50c3750..4a539e9 100644
--- a/fix_dates.py
+++ b/fix_dates.py
@@ -1,6 +1,7 @@
 import argparse
 import datetime
 import filecmp
+import multiprocessing
 import os
 import tempfile
 import time
@@ -30,7 +31,7 @@ def propfind(path, auth):
     """
     # do not descend further into subdirectories\
     # TODO: we could probably be faster if we did
-    headers = {"Depth": "1"}
+    headers = {"Depth": "infinity"} #"1"}
     # This body returns only the timelastmodified and the fileid variable
     requested_data = \
         """
@@ -116,7 +117,7 @@ def content_equal(original_entry, fixed_version, auth):
     :param original_entry: Filename of the entry with wrong timestamp.
     :param fixed_version: Filename of the version for comparison with the original.
     :param auth: Auth data for the HTTP request (e.g. a requests.auth.HTTPBasicAuth object)
-    :return: True, if they are equal in Metadata anc content. False otherwise.
+    :return: True, if they are equal in Metadata and content. False otherwise.
     """
     original = download_file(original_entry, auth)
     fixed = download_file(fixed_version, auth)
@@ -132,7 +133,23 @@ def content_equal(original_entry, fixed_version, auth):
     return deep and shallow
 
 
-#TODO: parallelisieren
+def restore_file(packed):
+    """
+    Handles one file. Searches for the latest older version with intact timestamp and compares them.
+    :param packed: data needed for one file: (entry, arguments, auth). entry represents the original file, arguments
+    are the runtime arguments and euth is for the http authentification
+    """
+    entry, arguments, auth = packed
+    fixed_version = find_valid_version(propfind(
+        arguments.server + VERSIONS_PATH_PREFIX + arguments.username + "/versions/" + str(entry["file_id"]),
+        auth))
+    if fixed_version is not None and content_equal(arguments.server + entry['path'], arguments.server +
+                                                                         fixed_version['path'], auth):
+        print("Restore from {}".format(fixed_version))
+    else:
+        print("Touch file.")
+
+
 if __name__ == "__main__":
     # get all necessary data from the command line
     argparser = argparse.ArgumentParser(description="Fix broken dates in Nextcloud folders.")
@@ -155,39 +172,22 @@ if __name__ == "__main__":
     # List of all entries with wrong time
     wrongtime = []
 
-    restore_coumt = 0
-    fixed_count = 0
-    touch_count = 0
-
     # Iterate through all folders and check for wrong timestamps
     while folders:
         url = arguments.server + folders.pop(0)
-        print("+", end="", flush=True)
+        # print("+", end="", flush=True)
         for entry in propfind(url, auth):
-            print(".", end="", flush=True)
+            # print(".", end="", flush=True)
             # put directories in search list
-            if "resource_type" in entry and "{DAV:}collection" in entry["resource_type"]:
-                folders.append(entry["path"])
+            #   if "resource_type" in entry and "{DAV:}collection" in entry["resource_type"]:
+            #     folders.append(entry["path"])
             # put files with wrong date in wrong date list (we don't know what to do if a directory has an invalid date)
-            elif "last_modified" in entry and entry["last_modified"] < DATE_THRESHOLD:
+            if "last_modified" in entry and entry["last_modified"] < DATE_THRESHOLD:
                 wrongtime.append(entry)
-        # Iterate through all fileids with wrong timestamps and check for versions with intact timestamp
+
     print()
-    # NOTE: you can indent this into the loop above to fix things on-the-fly instead of all at once
-    # TODO: indented for quicker access to examples
-    for entry in wrongtime:
-       # print(urllib.parse.unquote(entry["path"][len(FILES_PATH_PREFIX):]))
-        fixed_version = find_valid_version(propfind(
-            arguments.server + VERSIONS_PATH_PREFIX + arguments.username + "/versions/" + str(entry["file_id"]),
-            auth))
-        if fixed_version:
-            fixed_count+=1
-        if fixed_version and content_equal(arguments.server + entry['path'], arguments.server + fixed_version['path'], auth):
-#              print("Restore from {}".format(fixed_version))
-            restore_coumt +=1
-        else:
-            touch_count +=1
-#               print("Touch file.")
-
-    print(restore_coumt)
-    print(touch_count)
\ No newline at end of file
+    # Iterate through all fileids with wrong timestamps and replace with versions with intact timestamp or touch
+    # done parallel
+    data = [(entry, arguments, auth) for entry in wrongtime]
+    pool_obj = multiprocessing.Pool(processes=4)
+    results = pool_obj.map(restore_file, data)