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Test con la libreria di logging

This commit is contained in:
giuliof 2021-09-04 10:45:51 +02:00
parent e5143a86ad
commit 45752d2903
1 changed files with 86 additions and 65 deletions
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main.py
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@ -24,82 +24,103 @@ from io import BytesIO
import shutil as sh
import os
import time
import logging
# Connection to remote library file
import requests
# Parsing of HTTP RFC 1123 datetime format
from email.utils import parsedate_to_datetime
# Our custom library (again no pun intended)
import tcparser
# Global variables and configurations
import glob
# Start CGI handling for webserver
cgitb.enable()
inputvars = cgi.FieldStorage()
try:
print('Content-Type: text/json; charset=utf-8')
print('Access-Control-Allow-Origin: *')
print()
### End of HTTP headers: it is now safe to output things
##########################################################
# Start the logging library (to avoid printing on stdout)
# TODO
logging.basicConfig(filename='conf/tpdf.log', encoding='utf-8', level=logging.DEBUG)
# Create output directory and temporary files if they do not exist
if not os.path.exists(glob.conf['default']['outdir']):
os.mkdir(glob.conf['default']['outdir'])
if not os.path.exists(glob.conf['default']['outdir'] + '/lastupdate.txt'):
luh = open(glob.conf['default']['outdir'] + '/lastupdate.txt', 'w')
luh.write('0')
# Start CGI handling for webserver
cgitb.enable()
inputvars = cgi.FieldStorage()
logging.debug("Started CGI")
print('Content-Type: text/json; charset=utf-8')
print('Access-Control-Allow-Origin: *')
print()
### End of HTTP headers: it is now safe to output things
##########################################################
# Create output directory and temporary files if they do not exist
if not os.path.exists(glob.conf['default']['outdir']):
logging.debug("missing outdir, creating...")
os.mkdir(glob.conf['default']['outdir'])
if not os.path.exists(glob.conf['default']['outdir'] + '/lastupdate.txt'):
logging.debug("missing lastupdate.txt, creating...")
luh = open(glob.conf['default']['outdir'] + '/lastupdate.txt', 'w')
luh.write('0')
luh.close()
# Retrieve last database update timestamp
luh = open(glob.conf['default']['outdir'] + '/lastupdate.txt', 'r')
lu = int(float(luh.read()))
luh.close()
# Retrieve last database update timestamp
luh = open(glob.conf['default']['outdir'] + '/lastupdate.txt', 'r')
lu = int(float(luh.read()))
luh.close()
# Fetch last modified from HTTP header
path = glob.conf['default']['path']
user = glob.conf['default']['user']
pswd = glob.conf['default']['pswd']
req = requests.head(path, auth=(user, pswd))
cachefile = glob.conf['default']['outdir'] + "/tellico.xml"
# If header fetch fails I can't update cache.
# Try with current one, if exists
if req.status_code == 200 and 'Last-modified' in req.headers:
mtime = parsedate_to_datetime(req.headers['Last-modified']).timestamp()
# If local xml is out-of-date or missing, try download it
if int(lu) < int(mtime) or not os.path.isfile(cachefile):
# Download Tellico .tc database
req = requests.get(path, auth=(user, pswd))
if req.status_code == 200 and req.content != None:
# Unzip Tellico .tc database and "cache it" locally
zipHandler = zipfile.ZipFile(BytesIO(req.content), 'r')
zipHandler.extractall(glob.conf['default']['outdir'])
zipHandler.close()
luh = open(glob.conf['default']['outdir'] + '/lastupdate.txt', 'w')
luh.write(int(mtime))
luh.close()
# Get a Python-friendly library struct from XML file
library = tcparser.getLibrary(cachefile, lu)
# TODO: properly handle missing file errors or things like this
### Get filters to search for books ###
try:
title = inputvars['title'].value
except KeyError:
title = ''
try:
author = inputvars['author'].value
except KeyError:
author = ''
logging.info("last database update timestamp is %d" % lu)
result = tcparser.filter(library, title=title, author=author)
# Fetch last modified from HTTP header
path = glob.conf['default']['path']
user = glob.conf['default']['user']
pswd = glob.conf['default']['pswd']
req = requests.head(path, auth=(user, pswd))
# Wanna get a pretty JSON encoded library to do your nasty things offline at home? ;-)
print(json.dumps(result, indent=4))
logging.debug("fetched header from %s, returned code %d" % (path, req.status_code))
cachefile = glob.conf['default']['outdir'] + "/tellico.xml"
# If header fetch fails I can't update cache.
# Try with current one, if exists
if req.status_code == 200 and 'Last-modified' in req.headers:
mtime = int(parsedate_to_datetime(req.headers['Last-modified']).timestamp())
logging.info("Tellico last modified timestamp is %d" % mtime)
# If local xml is out-of-date or missing, try download it
if int(lu) < int(mtime) or not os.path.isfile(cachefile):
logging.info("Out-of-date, updating")
# Download Tellico .tc database
req = requests.get(path, auth=(user, pswd))
if req.status_code == 200 and req.content != None:
# Unzip Tellico .tc database and "cache it" locally
zipHandler = zipfile.ZipFile(BytesIO(req.content), 'r')
zipHandler.extractall(glob.conf['default']['outdir'])
zipHandler.close()
luh = open(glob.conf['default']['outdir'] + '/lastupdate.txt', 'w')
luh.write(mtime)
luh.close()
else:
logging.error("Update failed")
# Get a Python-friendly library struct from XML file
library = tcparser.getLibrary(cachefile, lu)
# TODO: properly handle missing file errors or things like this
### Get filters to search for books ###
try:
title = inputvars['title'].value
except KeyError:
title = ''
try:
author = inputvars['author'].value
except KeyError:
author = ''
result = tcparser.filter(library, title=title, author=author)
# Wanna get a pretty JSON encoded library to do your nasty things offline at home? ;-)
print(json.dumps(result, indent=4))
except:
logging.fatal("Unexpected error:", sys.exc_info()[0])