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cc-2419 media monitor import on start

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This commit is contained in:
martin 2011-06-30 17:23:31 -04:00
parent 851d5c12b2
commit 0f67db9ed7
4 changed files with 103 additions and 55 deletions
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85
python_apps/media-monitor/airtimefilemonitor/airtimemediamonitorbootstrap.py
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@ -1,4 +1,5 @@
import os
import time
from subprocess import Popen, PIPE
@ -9,6 +10,7 @@ class AirtimeMediaMonitorBootstrap():
self.logger = logger
self.multi_queue = multi_queue
self.pe = pe
self.airtime_tmp = '/var/tmp/airtime'
"""
on bootup we want to scan all directories and look for files that
@ -21,41 +23,56 @@ class AirtimeMediaMonitorBootstrap():
for dir in directories:
self.check_for_diff(dir)
def check_for_diff(self, dir):
airtime_tmp = '/var/tmp/airtime'
def check_for_diff(self, dir):
#set to hold new and/or modified files. We use a set to make it ok if files are added
#twice. This is become some of the tests for new files return result sets that are not
#mutually exclusive from each other.
modified_files = set()
#find files that have been modified since the last time
#media-monitor process was running.
command = "find %s -type f -iname '*.ogg' -o -iname '*.mp3' -readable -mmin -30" % dir
stdout = self.execCommandAndReturnStdOut(command)
self.logger.info("Files modified since last checkin: \n%s\n", stdout)
new_files = stdout.split('\n')
for file_path in new_files:
modified_files.add(file_path)
added_files = set()
removed_files = set()
if os.path.exists(airtime_tmp + '/.airtime_media_index') and False:
if os.path.exists(self.airtime_tmp + '/.airtime_media_index'):
#find files that have been modified since the last time
#media-monitor process was running.
time_diff_sec = time.time() - os.path.getmtime(self.airtime_tmp + '/.airtime_media_index')
command = "find %s -type f -iname '*.ogg' -o -iname '*.mp3' -readable -mmin -%d" % (dir, time_diff_sec/60+1)
self.logger.debug(command)
stdout = self.execCommandAndReturnStdOut(command)
self.logger.info("Files modified since last checkin: \n%s\n", stdout)
new_files = stdout.split('\n')
for file_path in new_files:
added_files.add(file_path)
#a previous index exists, we can do a diff between this
#file and the current state to see whether anything has
#changed.
self.logger.info("Previous index file found.")
#find deleted files
command = "find %s -type f -iname '*.ogg' -o -iname '*.mp3' -readable > %s/.airtime_media_index.tmp" % (dir, airtime_tmp)
command = "find %s -type f -iname '*.ogg' -o -iname '*.mp3' -readable > %s/.airtime_media_index.tmp" % (dir, self.airtime_tmp)
self.execCommand(command)
command = "diff %s/.airtime_media_index.tmp %s/.airtime_media_index" % (airtime_tmp, airtime_tmp)
command = "diff -u %s/.airtime_media_index %s/.airtime_media_index.tmp" % (self.airtime_tmp, self.airtime_tmp)
stdout = self.execCommandAndReturnStdOut(command)
self.logger.info("Deleted files since last checkin:\n%s\n", stdout)
#TODO: notify about deleted files and files moved here
#remove first 3 lines from the diff output.
stdoutSplit = (stdout.split('\n'))[3:]
self.logger.info("Changed files since last checkin:\n%s\n", "\n".join(stdoutSplit))
for line in stdoutSplit:
if len(line.strip(' ')) > 0:
if line[0] == '+':
added_files.add(line[1:])
elif line[0] == '-':
removed_files.add(line[1:])
self.pe.write_index_file()
else:
#a previous index does not exist. Most likely means that
#media monitor has never seen this directory before. Let's
@ -63,27 +80,20 @@ class AirtimeMediaMonitorBootstrap():
self.logger.info("Previous index file does not exist. Creating a new one")
#create a new index file.
command = "find %s -type f -iname '*.ogg' -o -iname '*.mp3' -readable" % dir
stdout = self.execCommandAndReturnStdOut(command)
self.logger.info("New files found: \n%s\n", stdout)
self.write_file(airtime_tmp + '/.airtime_media_index', stdout)
stdout = self.pe.write_index_file()
new_files = stdout.split('\n')
for file_path in new_files:
modified_files.add(file_path)
added_files.add(file_path)
self.logger.debug("set size: %d", len(modified_files))
for file_path in modified_files:
for file_path in added_files:
if os.path.exists(file_path):
self.pe.handle_created_file(False, os.path.basename(file_path), file_path)
def write_file(self, file, string):
f = open(file, 'w')
f.write(string)
f.close()
for file_path in removed_files:
self.pe.handle_removed_file(file_path)
def execCommand(self, command):
p = Popen(command, shell=True)
sts = os.waitpid(p.pid, 0)[1]
@ -96,9 +106,4 @@ class AirtimeMediaMonitorBootstrap():
if p.returncode != 0:
self.logger.warn("command \n%s\n return with a non-zero return value", command)
return stdout
if __name__ == '__main__':
mmb = AirtimeMediaMonitorBootstrap()
mmb.scan()