Imported Upstream version 0.4.0~beta1upstream/0.4.0_beta1

1 files changed, 275 insertions, 0 deletions

diff --git a/rapid/downloadtracker.py b/rapid/downloadtracker.py
new file mode 100644
index 0000000..309da71
--- /dev/null
+++ b/rapid/downloadtracker.py
@@ -0,0 +1,275 @@
+#!/usr/bin/python
+# -*- coding: latin1 -*-
+
+### Copyright (C) 2011 Damon Lynch <damonlynch@gmail.com>
+
+### This program is free software; you can redistribute it and/or modify
+### it under the terms of the GNU General Public License as published by
+### the Free Software Foundation; either version 2 of the License, or
+### (at your option) any later version.
+
+### This program is distributed in the hope that it will be useful,
+### but WITHOUT ANY WARRANTY; without even the implied warranty of
+### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+### GNU General Public License for more details.
+
+### You should have received a copy of the GNU General Public License
+### along with this program; if not, write to the Free Software
+### Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+import time
+from rpdfile import FILE_TYPE_PHOTO, FILE_TYPE_VIDEO
+from config import STATUS_DOWNLOAD_FAILED, STATUS_DOWNLOADED_WITH_WARNING
+
+from gettext import gettext as _
+
+class DownloadTracker:
+    """
+    Track file downloads - their size, number, and any problems
+    """
+    def __init__(self):
+        self.size_of_download_in_bytes_by_scan_pid = dict()
+        self.total_bytes_copied_in_bytes_by_scan_pid = dict()
+        self.no_files_in_download_by_scan_pid = dict()
+        self.file_types_present_by_scan_pid = dict()
+        # 'Download count' tracks the index of the file being downloaded
+        # into the list of files that need to be downloaded -- much like
+        # a counter in a for loop, e.g. 'for i in list', where i is the counter
+        self.download_count_for_file_by_unique_id = dict()
+        self.download_count_by_scan_pid = dict()
+        self.rename_chunk = dict()
+        self.files_downloaded = dict()
+        self.photos_downloaded = dict()
+        self.videos_downloaded = dict()
+        self.photo_failures = dict()
+        self.video_failures = dict()
+        self.warnings = dict()
+        self.total_photos_downloaded = 0
+        self.total_photo_failures = 0
+        self.total_videos_downloaded = 0
+        self.total_video_failures = 0
+        self.total_warnings = 0
+        self.total_bytes_to_download = 0
+        
+    def init_stats(self, scan_pid, bytes, no_files):
+        self.no_files_in_download_by_scan_pid[scan_pid] = no_files
+        self.rename_chunk[scan_pid] = bytes / 10 / no_files
+        self.size_of_download_in_bytes_by_scan_pid[scan_pid] = bytes + self.rename_chunk[scan_pid] * no_files
+        self.total_bytes_to_download += self.size_of_download_in_bytes_by_scan_pid[scan_pid]
+        self.files_downloaded[scan_pid] = 0
+        self.photos_downloaded[scan_pid] = 0
+        self.videos_downloaded[scan_pid] = 0
+        self.photo_failures[scan_pid] = 0
+        self.video_failures[scan_pid] = 0
+        self.warnings[scan_pid] = 0
+        
+    def get_no_files_in_download(self, scan_pid):
+        return self.no_files_in_download_by_scan_pid[scan_pid]
+        
+        
+    def get_no_files_downloaded(self, scan_pid, file_type):
+        if file_type == FILE_TYPE_PHOTO:
+            return self.photos_downloaded.get(scan_pid, 0)
+        else:
+            return self.videos_downloaded.get(scan_pid, 0)
+            
+    def get_no_files_failed(self, scan_pid, file_type):
+        if file_type == FILE_TYPE_PHOTO:
+            return self.photo_failures.get(scan_pid, 0)
+        else:
+            return self.video_failures.get(scan_pid, 0)
+            
+    def get_no_warnings(self, scan_pid):
+        return self.warnings.get(scan_pid, 0)
+            
+    def file_downloaded_increment(self, scan_pid, file_type, status):
+        self.files_downloaded[scan_pid] += 1
+        
+        if status <> STATUS_DOWNLOAD_FAILED:
+            if file_type == FILE_TYPE_PHOTO:
+                self.photos_downloaded[scan_pid] += 1
+                self.total_photos_downloaded += 1
+            else:
+                self.videos_downloaded[scan_pid] += 1
+                self.total_videos_downloaded += 1
+                
+            if status == STATUS_DOWNLOADED_WITH_WARNING:
+                self.warnings[scan_pid] += 1
+                self.total_warnings += 1
+        else:
+            if file_type == FILE_TYPE_PHOTO:
+                self.photo_failures[scan_pid] += 1
+                self.total_photo_failures += 1
+            else:
+                self.video_failures[scan_pid] += 1
+                self.total_video_failures += 1
+        
+        
+    def get_percent_complete(self, scan_pid):
+        """
+        Returns a float representing how much of the download
+        has been completed 
+        """
+        
+        # three components: copy (download), rename, and backup
+        percent_complete = ((float(
+                  self.total_bytes_copied_in_bytes_by_scan_pid[scan_pid]) 
+                + self.rename_chunk[scan_pid] * self.files_downloaded[scan_pid])
+                / self.size_of_download_in_bytes_by_scan_pid[scan_pid]) * 100
+        return percent_complete
+        
+    def get_overall_percent_complete(self):
+        total = 0
+        for scan_pid in self.total_bytes_copied_in_bytes_by_scan_pid:
+            total += (self.total_bytes_copied_in_bytes_by_scan_pid[scan_pid] +
+                     (self.rename_chunk[scan_pid] * 
+                      self.files_downloaded[scan_pid]))
+                      
+        percent_complete = float(total) / self.total_bytes_to_download
+        return percent_complete
+        
+    def set_total_bytes_copied(self, scan_pid, total_bytes):
+        self.total_bytes_copied_in_bytes_by_scan_pid[scan_pid] = total_bytes
+        
+    def set_download_count_for_file(self, unique_id, download_count):
+        self.download_count_for_file_by_unique_id[unique_id] = download_count
+        
+    def get_download_count_for_file(self, unique_id):
+        return self.download_count_for_file_by_unique_id[unique_id]
+        
+    def set_download_count(self, scan_pid, download_count):
+        self.download_count_by_scan_pid[scan_pid] = download_count
+        
+    def get_file_types_present(self, scan_pid):
+        return self.file_types_present_by_scan_pid[scan_pid]
+    
+    def set_file_types_present(self, scan_pid, file_types_present):
+        self.file_types_present_by_scan_pid[scan_pid] = file_types_present
+        
+    def no_errors_or_warnings(self):
+        """
+        Return True if there were no errors or warnings in the download
+        else return False
+        """
+        return (self.total_warnings == 0 and
+                self.photo_failures == 0 and 
+                self.video_failures == 0)
+        
+    def purge(self, scan_pid):
+        del self.no_files_in_download_by_scan_pid[scan_pid]
+        del self.size_of_download_in_bytes_by_scan_pid[scan_pid]
+        del self.photos_downloaded[scan_pid]
+        del self.videos_downloaded[scan_pid]
+        del self.files_downloaded[scan_pid]
+        del self.photo_failures[scan_pid]
+        del self.video_failures[scan_pid]
+        del self.warnings[scan_pid]
+        
+    def purge_all(self):
+        self.__init__()
+
+
+
+class TimeCheck:
+    """
+    Record times downloads commmence and pause - used in calculating time
+    remaining. 
+    
+    Also tracks and reports download speed.
+    
+    Note: This is completely independent of the file / subfolder naming
+    preference "download start time"
+    """
+    
+    def __init__(self):
+        # set the number of seconds gap with which to measure download time remaing 
+        self.download_time_gap = 3
+                
+        self.reset()
+        
+    def reset(self):
+        self.mark_set = False
+        self.total_downloaded_so_far = 0
+        self.total_download_size = 0
+        self.size_mark = 0
+        
+    def increment(self, bytes_downloaded):
+        self.total_downloaded_so_far += bytes_downloaded
+        
+    def set_download_mark(self):
+        if not self.mark_set:
+            self.mark_set = True
+
+            self.time_mark = time.time() 
+            
+    def pause(self):
+        self.mark_set = False
+
+    def check_for_update(self):
+        now = time.time()
+        update = now > (self.download_time_gap + self.time_mark)
+        
+        if update:
+            amt_time = now - self.time_mark
+            self.time_mark = now
+            amt_downloaded = self.total_downloaded_so_far - self.size_mark
+            self.size_mark = self.total_downloaded_so_far
+            download_speed = "%1.1f" % (amt_downloaded / 1048576 / amt_time) +_("MB/s")
+        else:
+            download_speed = None
+            
+        return (update, download_speed)
+            
+class TimeForDownload:
+    # used to store variables, see below
+    pass
+
+class TimeRemaining:
+    """
+    Calculate how much time is remaining to finish a download
+    """
+    gap = 3
+    def __init__(self):
+        self.clear()
+        
+    def set(self, scan_pid, size):
+        t = TimeForDownload()
+        t.time_remaining = None
+        t.size = size
+        t.downloaded = 0
+        t.size_mark = 0
+        t.time_mark = time.time()
+        self.times[scan_pid] = t
+    
+    def update(self, scan_pid, total_size):
+        if scan_pid in self.times:
+            self.times[scan_pid].downloaded = total_size
+            now = time.time()
+            tm = self.times[scan_pid].time_mark
+            amt_time = now - tm
+            if amt_time > self.gap:
+                self.times[scan_pid].time_mark = now
+                amt_downloaded = self.times[scan_pid].downloaded - self.times[scan_pid].size_mark
+                self.times[scan_pid].size_mark = self.times[scan_pid].downloaded
+                timefraction = amt_downloaded / float(amt_time)
+                amt_to_download = float(self.times[scan_pid].size) - self.times[scan_pid].downloaded
+                if timefraction:
+                    self.times[scan_pid].time_remaining = amt_to_download / timefraction
+        
+    def _time_estimates(self):
+        for t in self.times:
+            yield self.times[t].time_remaining
+            
+    def time_remaining(self):
+        return max(self._time_estimates())
+
+    def set_time_mark(self, scan_pid):
+        if scan_pid in self.times:
+            self.times[scan_pid].time_mark = time.time()
+        
+    def clear(self):
+        self.times = {}         
+        
+    def remove(self, scan_pid):
+        if scan_pid in self.times:
+            del self.times[scan_pid]