Fix handling internal error and keyboard interrupt

pytchat/cli/__init__.py

@@ -1,5 +1,6 @@
 import argparse
-
+import asyncio
+from asyncio.exceptions import CancelledError
 import os
 import signal
 from json.decoder import JSONDecodeError
@@ -52,67 +53,102 @@ def main():
     if not os.path.exists(Arguments().output):
         print("\nThe specified directory does not exist.:{}\n".format(Arguments().output))
         return
+    try:
+        Runner().run()
+    except CancelledError as e:
+        print(str(e))
 
-    for counter, video_id in enumerate(Arguments().video_ids):
-        if len(Arguments().video_ids) > 1:
-            print(f"\n{'-' * 10} video:{counter + 1} of {len(Arguments().video_ids)} {'-' * 10}")
 
-        try:
+class Runner:
-            video_id = extract_video_id(video_id)
+    
-            separated_path = str(Path(Arguments().output)) + os.path.sep
+    def run(self) -> None:
-            path = util.checkpath(separated_path + video_id + '.html')
+        ex = None
+        pbar = None
+        for counter, video_id in enumerate(Arguments().video_ids):
+            if len(Arguments().video_ids) > 1:
+                print(f"\n{'-' * 10} video:{counter + 1} of {len(Arguments().video_ids)} {'-' * 10}")
+
             try:
-                info = VideoInfo(video_id)
+                video_id = extract_video_id(video_id)
-            except Exception as e:
+                separated_path = str(Path(Arguments().output)) + os.path.sep
-                print("Cannot parse video information.:{} {}".format(video_id, type(e)))
+                path = util.checkpath(separated_path + video_id + '.html')
+                try:
+                    info = VideoInfo(video_id)
+                except Exception as e:
+                    print("Cannot parse video information.:{} {}".format(video_id, type(e)))
+                    if Arguments().save_error_data:
+                        util.save(str(e), "ERR", ".dat")
+                    continue
+
+                print(f"\n"
+                    f" video_id: {video_id}\n"
+                    f" channel:  {info.get_channel_name()}\n"
+                    f" title:    {info.get_title()}\n"
+                    f" output path: {path}")
+
+                duration = info.get_duration()
+                pbar = ProgressBar(total=(duration * 1000), status_txt="Extracting")
+                ex = Extractor(video_id,
+                        callback=pbar.disp,
+                        div=10)
+                signal.signal(signal.SIGINT, (lambda a, b: self.cancel(ex, pbar)))
+
+                data = ex.extract()
+                if data == []:
+                    continue
+                pbar.reset("#", "=", total=len(data), status_txt="Rendering  ")
+                processor = HTMLArchiver(path, callback=pbar.disp)
+                processor.process(
+                    [{'video_id': None,
+                    'timeout': 1,
+                    'chatdata': (action["replayChatItemAction"]["actions"][0] for action in data)}]
+                )
+                processor.finalize()
+                pbar.reset('#', '#', status_txt='Completed   ')
+                pbar.close()
+                print()
+                if pbar.is_cancelled():
+                    print("\nThe extraction process has been discontinued.\n")
+            except InvalidVideoIdException:
+                print("Invalid Video ID or URL:", video_id)
+            except NoContents as e:
+                print(f"Abort:{str(e)}:[{video_id}]")
+            except (JSONDecodeError, PatternUnmatchError) as e:
+                print("{}:{}".format(e.msg, video_id))
                 if Arguments().save_error_data:
-                    util.save(str(e), "ERR", ".dat")
+                    util.save(e.doc, "ERR_", ".dat")
-                continue
+            except (UnknownConnectionError, HCNetworkError, HCReadTimeout) as e:
+                print(f"An unknown network error occurred during the processing of [{video_id}]. : " + str(e))
+            except Exception as e:
+                print(f"Abort:{str(type(e))} {str(e)[:80]}")
+            finally:
+                clear_tasks()
 
-            print(f"\n"
+        return
-                  f" video_id: {video_id}\n"
-                  f" channel:  {info.get_channel_name()}\n"
-                  f" title:    {info.get_title()}\n"
-                  f" output path: {path}")
 
-            duration = info.get_duration()
+    def cancel(self, ex=None, pbar=None) -> None:
-            pbar = ProgressBar(total=(duration * 1000), status="Extracting")
+        '''Called when keyboard interrupted has occurred.
-            ex = Extractor(video_id,
+        '''
-                    callback=pbar._disp,
+        print("\nKeyboard interrupted.\n")
-                    div=10)
+        if ex and pbar:
-            signal.signal(signal.SIGINT, (lambda a, b: cancel(ex, pbar)))
+            ex.cancel()
-            data = ex.extract()
+            pbar.cancel()
-            if data == []:
-                return False
-            pbar.reset("#", "=", total=len(data), status="Rendering  ")
-            processor = HTMLArchiver(path, callback=pbar._disp)
-            processor.process(
-                [{'video_id': None,
-                'timeout': 1,
-                'chatdata': (action["replayChatItemAction"]["actions"][0] for action in data)}]
-            )
-            processor.finalize()
-            pbar.reset('#', '#', status='Completed   ')
-            pbar.close()
-            print()
-            if pbar.is_cancelled():
-                print("\nThe extraction process has been discontinued.\n")
-        except InvalidVideoIdException:
-            print("Invalid Video ID or URL:", video_id)
-        except NoContents as e:
-            print(e)
-        except (JSONDecodeError, PatternUnmatchError) as e:
-            print("{}:{}".format(e.msg, video_id))
-            if Arguments().save_error_data:
-                util.save(e.doc, "ERR_", ".dat")
-        except (UnknownConnectionError, HCNetworkError, HCReadTimeout) as e:
-            print(f"An unknown network error occurred during the processing of [{video_id}]. : " + str(e))
-        except Exception as e:
-            print(type(e), str(e))
-
-    return
 
 
-def cancel(ex, pbar):
+def clear_tasks():
-    ex.cancel()
+    '''
-    pbar.cancel()
+    Clear remained tasks.
+    Called when internal exception has occurred or
+    after each extraction process is completed.
+    '''
+    async def _shutdown():
+        tasks = [t for t in asyncio.all_tasks()
+                if t is not asyncio.current_task()]
+        for task in tasks:
+            task.cancel()
+            
+    try:
+        loop = asyncio.get_event_loop()
+        loop.run_until_complete(_shutdown())
+    except Exception as e:
+        print(e)

pytchat/cli/progressbar.py

@@ -9,21 +9,20 @@ import sys
 
 
 class ProgressBar:
-    def __init__(self, total, status):
+    def __init__(self, total, status_txt):
         self._bar_len = 60
         self._cancelled = False
-        self.reset(total=total, status=status)
+        self.reset(total=total, status_txt=status_txt)
-        self._blinker = 0
         
-    def reset(self, symbol_done="=", symbol_space=" ", total=100, status=''):
+    def reset(self, symbol_done="=", symbol_space=" ", total=100, status_txt=''):
-        self.con_width = shutil.get_terminal_size(fallback=(80, 24)).columns
+        self._console_width = shutil.get_terminal_size(fallback=(80, 24)).columns
         self._symbol_done = symbol_done
         self._symbol_space = symbol_space
         self._total = total
-        self._status = status
+        self._status_txt = status_txt
         self._count = 0
 
-    def _disp(self, _, fetched):
+    def disp(self, _, fetched):
         self._progress(fetched, self._total)
 
     def _progress(self, fillin, total):
@@ -39,11 +38,10 @@ class ProgressBar:
             
         bar = self._symbol_done * filled_len + \
               self._symbol_space * (self._bar_len - filled_len)
-        disp = f" [{bar}] {percents:>5.1f}% ...{self._status} "[:self.con_width - 1] + '\r'
+        disp = f" [{bar}] {percents:>5.1f}% ...{self._status_txt} "[:self._console_width - 1] + '\r'
 
         sys.stdout.write(disp)
         sys.stdout.flush()
-        self._blinker += 1
 
     def close(self):
         if not self._cancelled:

pytchat/tool/extract/asyncdl.py

@@ -1,5 +1,6 @@
-import httpx
 import asyncio
+import httpx
+import socket
 from . import parser
 from . block import Block
 from . worker import ExtractWorker
@@ -8,7 +9,7 @@ from ... import config
 from ... paramgen import arcparam
 from ... exceptions import UnknownConnectionError
 from concurrent.futures import CancelledError
-from httpx import NetworkError, ReadTimeout
+from httpx import NetworkError, TimeoutException, ConnectError
 from json import JSONDecodeError
 from urllib.parse import quote
 
@@ -75,12 +76,12 @@ def ready_blocks(video_id, duration, div, callback):
                     next_continuation, actions = None, []
                     break
                 param_set.add(continuation)
-                resp = await session.get(url, headers=headers)
+                resp = await session.get(url, headers=headers, timeout=10)
                 next_continuation, actions = parser.parse(resp.json())
                 break
             except JSONDecodeError:
                 await asyncio.sleep(3)
-            except (NetworkError, ReadTimeout) as e:
+            except (NetworkError, TimeoutException, ConnectError) as e:
                 err = e
                 await asyncio.sleep(3)
         else:
@@ -136,9 +137,12 @@ def fetch_patch(callback, blocks, video_id):
                 break
             except JSONDecodeError:
                 await asyncio.sleep(3)
-            except (NetworkError, ReadTimeout) as e:
+            except (NetworkError, TimeoutException, ConnectError) as e:
                 err = e
                 await asyncio.sleep(3)
+            except socket.error as error:
+                print("socket error", error.errno)
+                await asyncio.sleep(3)
         else:
             cancel()
             raise UnknownConnectionError("Abort:" + str(err))
@@ -162,15 +166,10 @@ def fetch_patch(callback, blocks, video_id):
 
 
 async def _shutdown():
-    print("\nshutdown...")
     tasks = [t for t in asyncio.all_tasks()
              if t is not asyncio.current_task()]
     for task in tasks:
         task.cancel()
-        try:
-            await task
-        except asyncio.CancelledError:
-            pass
 
 
 def cancel():

pytchat/tool/extract/extractor.py

@@ -93,5 +93,4 @@ class Extractor:
         return ret
 
     def cancel(self):
-        print("cancel")
         asyncdl.cancel()