Remove watchdog, replace with a simple background thread

This commit is contained in:
Micah Lee 2020-04-06 19:26:45 -07:00
parent e84ca43da8
commit a9d55e9169
No known key found for this signature in database
GPG key ID: 403C2657CD994F73
5 changed files with 90 additions and 129 deletions

View file

@ -18,6 +18,8 @@ You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
import time
import json
import os
from PyQt5 import QtCore
from onionshare import strings
@ -166,3 +168,83 @@ class AutoStartTimer(QtCore.QThread):
except ValueError as e:
self.error.emit(e.args[0])
return
class EventHandlerThread(QtCore.QThread):
"""
To trigger an event, write a JSON line to the events file. When that file changes,
each line will be handled as an event. Valid events are:
{"type": "new_tab"}
{"type": "new_share_tab", "filenames": ["file1", "file2"]}
"""
new_tab = QtCore.pyqtSignal()
new_share_tab = QtCore.pyqtSignal(list)
def __init__(self, common):
super(EventHandler, self).__init__()
self.common = common
self.common.log("EventHandlerThread", "__init__")
def run(self):
self.common.log("EventHandlerThread", "run")
mtime = os.stat(self.common.gui.events_filename).st_mtime
while True:
if os.path.exist(self.common.gui.events_filename):
# Events file exists
if os.stat(self.common.gui.events_filename).st_mtime != mtime:
# Events file has been modified, load events
try:
with open(self.common.gui.events_filename, "r") as f:
lines = f.readlines()
os.remove(self.common.gui.events_filename)
self.common.log(
"EventHandler", "run", f"processing {len(lines)} lines"
)
for line in lines:
try:
obj = json.loads(line)
if "type" not in obj:
self.common.log(
"EventHandler",
"run",
f"event does not have a type: {obj}",
)
continue
except json.decoder.JSONDecodeError:
self.common.log(
"EventHandler",
"run",
f"ignoring invalid line: {line}",
)
continue
if obj["type"] == "new_tab":
self.common.log("EventHandler", "run", "new_tab event")
self.new_tab.emit()
elif obj["type"] == "new_share_tab":
if (
"filenames" in obj
and type(obj["filenames"]) is list
):
self.new_share_tab.emit(obj["filenames"])
else:
self.common.log(
"EventHandler",
"run",
f"invalid new_share_tab event: {obj}",
)
else:
self.common.log(
"EventHandler", "run", f"invalid event type: {obj}"
)
except:
pass
time.sleep(0.2)