openmedialibrary/oml/server.py

# -*- coding: utf-8 -*-

import asyncio
import os
import sys
import signal
import time

from tornado.ioloop import IOLoop
import tornado.web
from tornado.web import Application

from cache import Cache
from item.handlers import EpubHandler, ReaderHandler, FileHandler
from item.handlers import OMLHandler, UploadHandler
from item.handlers import CropHandler
from item.icons import IconHandler
import db
import node.server
import oxtornado
import downloads
import settings
import setup
import state
import tasks
import websocket
import ui_websocket
import update

import logging

logger = logging.getLogger(__name__)

class StaticFileHandler(tornado.web.StaticFileHandler):
    def get_content_type(self):
        if self.request.path.split('?')[0].endswith('.mjs'):
            return 'application/javascript'
        return super().get_content_type()

class MainHandler(OMLHandler):

    def get(self, path):
        version = settings.MINOR_VERSION.split('-')[0]
        if version == 'git':
            version = int(time.mktime(time.gmtime()))
        path = os.path.join(settings.static_path, 'html', 'oml.html')
        with open(path) as fd:
            content = fd.read()
        content = content.replace('.js?1', '.js?%s' % version)
        if state.update:
            content = content.replace('oml.js', 'oml.update.js')
        self.set_header('Content-Type', 'text/html')
        self.set_header('Content-Length', str(len(content)))
        self.set_header('Cache-Control', 'no-cache, no-store, must-revalidate')
        self.set_header('Pragma', 'no-cache')
        self.set_header('Expires', '0')
        self.write(content)

def log_request(handler):
    if settings.DEBUG_HTTP:
        if handler.get_status() < 400:
            log_method = logger.info
        elif handler.get_status() < 500:
            log_method = logger.warning
        else:
            log_method = logger.error
        request_time = 1000.0 * handler.request.request_time()
        log_method("%d %s %.2fms", handler.get_status(),
                   handler._request_summary(), request_time)

async def shutdown():
    state.shutdown = True
    if state.tor:
        state.tor._shutdown = True
    if state.nodes:
        logger.debug('shutdown nodes')
        await state.nodes.join()
    if state.downloads:
        logger.debug('shutdown downloads')
        state.downloads.join()
    logger.debug('shutdown http_server')
    if state.tasks:
        logger.debug('shutdown tasks')
        state.tasks.join()
    if state.update:
        logger.debug('shutdown updates')
        state.update.join()
    if state.node:
        state.node.stop()
    if state.tor:
        logger.debug('shutdown tor')
        state.tor.shutdown()
    for peer in state.peers:
        state.peers[peer].join()
    if state.PID and os.path.exists(state.PID):
        logger.debug('remove %s', state.PID)
        os.unlink(state.PID)

def run():
    PID = sys.argv[2] if len(sys.argv) > 2 else None
    if len(sys.argv) > 3 and sys.argv[2] == 'debug':
        PID = sys.argv[3]
        debug = True
    else:
        debug = False

    log_format = '%(asctime)s:%(levelname)s:%(name)s:%(message)s'
    if debug:
        logging.basicConfig(level=logging.DEBUG, format=log_format)
    else:
        logging.basicConfig(level=logging.DEBUG,
            handlers=[logging.FileHandler(settings.log_path, 'w', 'utf-8')],
            format=log_format)

    options = {
        'debug': False,
        'log_function': log_request,
        'gzip': True
    }

    common_handlers = [
        (r'/(favicon.ico)', StaticFileHandler, {'path': settings.static_path}),
        (r'/static/oxjs/(.*)', StaticFileHandler, {'path': os.path.join(settings.base_dir, '..', 'oxjs')}),
        (r'/static/cbr.js/(.*)', StaticFileHandler, {'path': os.path.join(settings.base_dir, '..', 'reader', 'cbr.js')}),
        (r'/static/epub.js/(.*)', StaticFileHandler, {'path': os.path.join(settings.base_dir, '..', 'reader', 'epub.js')}),
        (r'/static/pdf.js/(.*)', StaticFileHandler, {'path': os.path.join(settings.base_dir, '..', 'reader', 'pdf.js')}),
        (r'/static/txt.js/(.*)', StaticFileHandler, {'path': os.path.join(settings.base_dir, '..', 'reader', 'txt.js')}),
        (r'/static/(.*)', StaticFileHandler, {'path': settings.static_path}),
        (r'/(.*)/epub/(.*)', EpubHandler),
        (r'/(.*?)/reader/', ReaderHandler),
        (r'/(.*?)/cbr/', FileHandler),
        (r'/(.*?)/pdf/', FileHandler),
        (r'/(.*?)/txt/', FileHandler),
        (r'/(.*?)/get/', FileHandler, {
            'attachment': True
        }),
        (r'/(.*)/2048p(\d*),(\d*),(\d*),(\d*),(\d*).jpg', CropHandler),
        (r'/(.*)/(cover|preview)(\d*).jpg', IconHandler),
    ]
    handlers = common_handlers + [
        (r'/api/upload/', UploadHandler, dict(context=db.session)),
        (r'/api/', oxtornado.ApiHandler, dict(context=db.session)),
        (r'/ui_socket', ui_websocket.Handler),
        (r'/ws', websocket.Handler),
        (r"(.*)", MainHandler),
    ]
    public_handlers = common_handlers + [
        (r'/api/', oxtornado.ApiHandler, dict(context=db.session, public=True)),
        (r'/ws', websocket.Handler, dict(public=True)),
        (r"(.*)", MainHandler),
    ]

    setup.create_db()
    http_server = Application(handlers, **options)
    max_buffer_size = 2*1024*1024*1024
    http_server.listen(settings.server['port'], settings.server['address'], max_buffer_size=max_buffer_size)

    # public server
    if settings.preferences.get('enableReadOnlyService'):
        public_port = settings.server.get('public_port')
        public_address = settings.server['public_address']
        if public_port:
            public_server = Application(public_handlers, **options)
            public_server.listen(public_port, public_address)

    if PID:
        with open(PID, 'w') as pid:
            pid.write('%s' % os.getpid())

    state.update = update.update_available()
    state.PID = PID
    state.http_server = http_server
    state.main = IOLoop.instance()
    state.cache = Cache(ttl=60)

    def start_node():
        import nodes
        import tor
        import bandwidth
        state.bandwidth = bandwidth.Bandwidth()
        state.tor = tor.Tor()
        state.nodes = nodes.Nodes()
        state.node = node.server.start()

        def publish():
            if not state.tor.is_online():
                state.main.call_later(10, publish)
            else:
                nodes.publish_node()
        state.main.add_callback(publish)
        state.main.call_later(10, lambda: state.tasks.queue('scanimport'))

    if not state.update:
        state.downloads = downloads.Downloads()
        state.tasks = tasks.Tasks()
        state.main.add_callback(start_node)
    else:
        state.update = update.Update()

    if ':' in settings.server['address']:
        host = '[%s]' % settings.server['address']
    elif not settings.server['address']:
        host = '127.0.0.1'
    else:
        host = settings.server['address']
    url = 'http://%s:%s/' % (host, settings.server['port'])
    print('open browser at %s' % url)
    logger.debug('Starting OML %s at %s', settings.VERSION, url)

    signal.signal(signal.SIGTERM, lambda _, __: sys.exit(0))

    try:
        state.main.start()
    except:
        print('shutting down...')
    asyncio.run(shutdown())