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authorLukas Fleischer <lfleischer@calcurse.org>2016-12-08 10:05:15 +0100
committerLukas Fleischer <lfleischer@calcurse.org>2016-12-08 16:22:00 +0100
commit7b5602ae17c62a8af63886235f9c841562373c49 (patch)
treed65095da8fea173cd16f15d52a8c15dfa9d82ff6 /contrib/caldav
parent8cd7c76db31fe83977c6e9014ca3ea00e01202f4 (diff)
downloadcalcurse-7b5602ae17c62a8af63886235f9c841562373c49.tar.gz
calcurse-7b5602ae17c62a8af63886235f9c841562373c49.zip
calcurse-caldav: Split object addition and removal
Instead of performing two synchronization steps (push/pull), split the synchronization protocol into four steps: 1. Retrieve new objects from the server. 2. Delete local objects that no longer exist on the server. 3. Push new objects to the server. 4. Delete remote objects that no longer exist locally. Each of the steps is performed by a separate function. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
Diffstat (limited to 'contrib/caldav')
-rwxr-xr-xcontrib/caldav/calcurse-caldav.py52
1 files changed, 34 insertions, 18 deletions
diff --git a/contrib/caldav/calcurse-caldav.py b/contrib/caldav/calcurse-caldav.py
index 2ea0152..7d1c0df 100755
--- a/contrib/caldav/calcurse-caldav.py
+++ b/contrib/caldav/calcurse-caldav.py
@@ -230,19 +230,12 @@ def push_object(conn, objhash):
return (href, etag)
-def remove_remote_object(conn, etag, href):
- headers = {'If-Match': '"' + etag + '"'}
- remote_query(conn, "DELETE", href, headers, None)
-
-
def push_objects(conn, syncdb, etagdict):
objhashes = calcurse_hashset()
new = objhashes - set([entry[1] for entry in syncdb.values()])
- gone = set([entry[1] for entry in syncdb.values()]) - objhashes
-
- added = deleted = 0
# Copy new objects to the server.
+ added = 0
for objhash in new:
if verbose:
print("Pushing new object {} to the server.".format(objhash))
@@ -253,7 +246,20 @@ def push_objects(conn, syncdb, etagdict):
syncdb[href] = (etag, objhash)
added += 1
+ return added
+
+
+def remove_remote_object(conn, etag, href):
+ headers = {'If-Match': '"' + etag + '"'}
+ remote_query(conn, "DELETE", href, headers, None)
+
+
+def remove_remote_objects(conn, syncdb, etagdict):
+ objhashes = calcurse_hashset()
+ gone = set([entry[1] for entry in syncdb.values()]) - objhashes
+
# Remove locally deleted objects from the server.
+ deleted = 0
for objhash in gone:
queue = []
for href, entry in syncdb.items():
@@ -280,7 +286,7 @@ def push_objects(conn, syncdb, etagdict):
syncdb.pop(href, None)
deleted += 1
- return (added, deleted)
+ return deleted
def pull_objects(conn, syncdb, etagdict):
@@ -291,7 +297,6 @@ def pull_objects(conn, syncdb, etagdict):
missing.add(href)
elif etagdict[href] != syncdb[href][0]:
modified.add(href)
- orphan = set(syncdb.keys()) - set(etagdict.keys())
# Download and import new objects from the server.
body = ('<?xml version="1.0" encoding="utf-8" ?>'
@@ -305,7 +310,7 @@ def pull_objects(conn, syncdb, etagdict):
root = etree.fromstring(body)
- added = deleted = 0
+ added = 0
for node in root.findall(".//D:response", namespaces=nsmap):
hrefnode = node.find("./D:href", namespaces=nsmap)
@@ -341,7 +346,14 @@ def pull_objects(conn, syncdb, etagdict):
syncdb[href] = (etag, objhash)
added += 1
+ return added
+
+
+def remove_local_objects(conn, syncdb, etagdict):
+ orphan = set(syncdb.keys()) - set(etagdict.keys())
+
# Delete objects that no longer exist on the server.
+ deleted = 0
for href in orphan:
etag, objhash = syncdb[href]
@@ -354,7 +366,7 @@ def pull_objects(conn, syncdb, etagdict):
syncdb.pop(href, None)
deleted += 1
- return (added, deleted)
+ return deleted
def run_hook(name):
@@ -517,13 +529,17 @@ try:
# server.
etagdict = get_etags(conn)
- # Retrieve new objects from the server, delete local items that no longer
- # exist on the server.
- local_new, local_del = pull_objects(conn, syncdb, etagdict)
+ # Retrieve new objects from the server
+ local_new = pull_objects(conn, syncdb, etagdict)
+
+ # Delete local items that no longer exist on the server.
+ local_del = remove_local_objects(conn, syncdb, etagdict)
+
+ # Push new objects to the server.
+ remote_new = push_objects(conn, syncdb, etagdict)
- # Push new objects to the server, remove items from the server if they no
- # longer exist locally.
- remote_new, remote_del = push_objects(conn, syncdb, etagdict)
+ # Remove items from the server if they no longer exist locally.
+ remote_del = remove_remote_objects(conn, syncdb, etagdict)
# Write the synchronization database.
save_syncdb(syncdbfn, syncdb)