def __init__(self, global_conf, app_conf, paths, **extra):
"""
Globals acts as a container for objects available throughout
the life of the application.
One instance of Globals is created by Pylons during
application initialization and is available during requests
via the 'g' variable.
``global_conf``
The same variable used throughout ``config/middleware.py``
namely, the variables from the ``[DEFAULT]`` section of the
configuration file.
``app_conf``
The same ``kw`` dictionary used throughout
``config/middleware.py`` namely, the variables from the
section in the config file for your application.
``extra``
The configuration returned from ``load_config`` in
``config/middleware.py`` which may be of use in the setup of
your global variables.
"""
global_conf.setdefault("debug", False)
self.config = ConfigValueParser(global_conf)
self.config.add_spec(self.spec)
self.plugins = PluginLoader(self.config.get("plugins", []))
self.stats = Stats(self.config.get('statsd_addr'),
self.config.get('statsd_sample_rate'))
self.startup_timer = self.stats.get_timer("app_startup")
self.startup_timer.start()
self.paths = paths
self.running_as_script = global_conf.get('running_as_script', False)
# turn on for language support
self.lang = getattr(self, 'site_lang', 'en')
self.languages, self.lang_name = \
get_active_langs(default_lang=self.lang)
all_languages = self.lang_name.keys()
all_languages.sort()
self.all_languages = all_languages
# set default time zone if one is not set
tz = global_conf.get('timezone', 'UTC')
self.tz = pytz.timezone(tz)
dtz = global_conf.get('display_timezone', tz)
self.display_tz = pytz.timezone(dtz)
self.startup_timer.intermediate("init")
def __init__(self, global_conf, app_conf, paths, **extra):
"""
Globals acts as a container for objects available throughout
the life of the application.
One instance of Globals is created by Pylons during
application initialization and is available during requests
via the 'g' variable.
``global_conf``
The same variable used throughout ``config/middleware.py``
namely, the variables from the ``[DEFAULT]`` section of the
configuration file.
``app_conf``
The same ``kw`` dictionary used throughout
``config/middleware.py`` namely, the variables from the
section in the config file for your application.
``extra``
The configuration returned from ``load_config`` in
``config/middleware.py`` which may be of use in the setup of
your global variables.
"""
global_conf.setdefault("debug", False)
# reloading site ensures that we have a fresh sys.path to build our
# working set off of. this means that forked worker processes won't get
# the sys.path that was current when the master process was spawned
# meaning that new plugins will be picked up on regular app reload
# rather than having to restart the master process as well.
reload(site)
self.pkg_resources_working_set = pkg_resources.WorkingSet()
self.config = ConfigValueParser(global_conf)
self.config.add_spec(self.spec)
self.plugins = PluginLoader(self.pkg_resources_working_set,
self.config.get("plugins", []))
self.stats = Stats(self.config.get('statsd_addr'),
self.config.get('statsd_sample_rate'))
self.startup_timer = self.stats.get_timer("app_startup")
self.startup_timer.start()
self.paths = paths
self.running_as_script = global_conf.get('running_as_script', False)
# turn on for language support
self.lang = getattr(self, 'site_lang', 'en')
self.languages, self.lang_name = \
get_active_langs(default_lang=self.lang)
all_languages = self.lang_name.keys()
all_languages.sort()
self.all_languages = all_languages
# set default time zone if one is not set
tz = global_conf.get('timezone', 'UTC')
self.tz = pytz.timezone(tz)
dtz = global_conf.get('display_timezone', tz)
self.display_tz = pytz.timezone(dtz)
self.startup_timer.intermediate("init")
def setup(self):
# heavy load mode is read only mode with a different infobar
if self.heavy_load_mode:
self.read_only_mode = True
if hasattr(signal, 'SIGUSR1'):
# not all platforms have user signals
signal.signal(signal.SIGUSR1, thread_dump)
# initialize caches. Any cache-chains built here must be added
# to cache_chains (closed around by reset_caches) so that they
# can properly reset their local components
localcache_cls = (SelfEmptyingCache
if self.running_as_script else LocalCache)
num_mc_clients = self.num_mc_clients
self.cache_chains = {}
# for now, zookeeper will be an optional part of the stack.
# if it's not configured, we will grab the expected config from the
# [live_config] section of the ini file
zk_hosts = self.config.get("zookeeper_connection_string")
if zk_hosts:
from r2.lib.zookeeper import (connect_to_zookeeper, LiveConfig,
LiveList)
zk_username = self.config["zookeeper_username"]
zk_password = self.config["zookeeper_password"]
self.zookeeper = connect_to_zookeeper(zk_hosts,
(zk_username, zk_password))
self.live_config = LiveConfig(self.zookeeper, LIVE_CONFIG_NODE)
self.throttles = LiveList(self.zookeeper,
"/throttles",
map_fn=ipaddress.ip_network,
reduce_fn=ipaddress.collapse_addresses)
else:
self.zookeeper = None
parser = ConfigParser.RawConfigParser()
parser.read([self.config["__file__"]])
self.live_config = extract_live_config(parser, self.plugins)
self.throttles = tuple() # immutable since it's not real
self.memcache = CMemcache(self.memcaches, num_clients=num_mc_clients)
self.lock_cache = CMemcache(self.lockcaches,
num_clients=num_mc_clients)
self.stats = Stats(self.config.get('statsd_addr'),
self.config.get('statsd_sample_rate'))
event.listens_for(engine.Engine, 'before_cursor_execute')(
self.stats.pg_before_cursor_execute)
event.listens_for(engine.Engine, 'after_cursor_execute')(
self.stats.pg_after_cursor_execute)
self.make_lock = make_lock_factory(self.lock_cache, self.stats)
if not self.cassandra_seeds:
raise ValueError("cassandra_seeds not set in the .ini")
keyspace = "reddit"
self.cassandra_pools = {
"main":
StatsCollectingConnectionPool(keyspace,
stats=self.stats,
logging_name="main",
server_list=self.cassandra_seeds,
pool_size=self.cassandra_pool_size,
timeout=2,
max_retries=3,
prefill=False),
}
perma_memcache = (CMemcache(self.permacache_memcaches,
num_clients=num_mc_clients)
if self.permacache_memcaches else None)
self.permacache = CassandraCacheChain(
localcache_cls(),
CassandraCache('permacache',
self.cassandra_pools[self.cassandra_default_pool],
read_consistency_level=self.cassandra_rcl,
write_consistency_level=self.cassandra_wcl),
memcache=perma_memcache,
lock_factory=self.make_lock)
self.cache_chains.update(permacache=self.permacache)
# hardcache is done after the db info is loaded, and then the
# chains are reset to use the appropriate initial entries
if self.stalecaches:
self.cache = StaleCacheChain(
localcache_cls(),
CMemcache(self.stalecaches, num_clients=num_mc_clients),
self.memcache)
else:
self.cache = MemcacheChain((localcache_cls(), self.memcache))
self.cache_chains.update(cache=self.cache)
self.rendercache = MemcacheChain(
(localcache_cls(),
CMemcache(self.rendercaches,
noreply=True,
no_block=True,
num_clients=num_mc_clients)))
self.cache_chains.update(rendercache=self.rendercache)
self.thing_cache = CacheChain((localcache_cls(), ))
self.cache_chains.update(thing_cache=self.thing_cache)
#load the database info
self.dbm = self.load_db_params()
# can't do this until load_db_params() has been called
self.hardcache = HardcacheChain(
(localcache_cls(), self.memcache, HardCache(self)),
cache_negative_results=True)
self.cache_chains.update(hardcache=self.hardcache)
# I know this sucks, but we need non-request-threads to be
# able to reset the caches, so we need them be able to close
# around 'cache_chains' without being able to call getattr on
# 'g'
cache_chains = self.cache_chains.copy()
def reset_caches():
for name, chain in cache_chains.iteritems():
chain.reset()
chain.stats = CacheStats(self.stats, name)
self.reset_caches = reset_caches
self.reset_caches()
# set the modwindow
self.MODWINDOW = timedelta(self.MODWINDOW)
self.REDDIT_MAIN = bool(os.environ.get('REDDIT_MAIN'))
origin_prefix = self.domain_prefix + "." if self.domain_prefix else ""
self.origin = "http://" + origin_prefix + self.domain
self.secure_domains = set([urlparse(self.payment_domain).netloc])
self.trusted_domains = set([self.domain])
self.trusted_domains.update(self.authorized_cnames)
if self.https_endpoint:
https_url = urlparse(self.https_endpoint)
self.secure_domains.add(https_url.netloc)
self.trusted_domains.add(https_url.hostname)
if getattr(self, 'oauth_domain', None):
self.secure_domains.add(self.oauth_domain)
# load the unique hashed names of files under static
static_files = os.path.join(self.paths.get('static_files'), 'static')
names_file_path = os.path.join(static_files, 'names.json')
if os.path.exists(names_file_path):
with open(names_file_path) as handle:
self.static_names = json.load(handle)
else:
self.static_names = {}
#setup the logger
self.log = logging.getLogger('reddit')
self.log.addHandler(logging.StreamHandler())
if self.debug:
self.log.setLevel(logging.DEBUG)
else:
self.log.setLevel(logging.INFO)
# set log level for pycountry which is chatty
logging.getLogger('pycountry.db').setLevel(logging.CRITICAL)
if not self.media_domain:
self.media_domain = self.domain
if self.media_domain == self.domain:
print("Warning: g.media_domain == g.domain. " +
"This may give untrusted content access to user cookies")
self.reddit_host = socket.gethostname()
self.reddit_pid = os.getpid()
for arg in sys.argv:
tokens = arg.split("=")
if len(tokens) == 2:
k, v = tokens
self.log.debug("Overriding g.%s to %s" % (k, v))
setattr(self, k, v)
#if we're going to use the query_queue, we need amqp
if self.write_query_queue and not self.amqp_host:
raise Exception("amqp_host must be defined to use the query queue")
# This requirement doesn't *have* to be a requirement, but there are
# bugs at the moment that will pop up if you violate it
if self.write_query_queue and not self.use_query_cache:
raise Exception("write_query_queue requires use_query_cache")
# try to set the source control revision numbers
self.versions = {}
r2_root = os.path.dirname(os.path.dirname(self.paths["root"]))
r2_gitdir = os.path.join(r2_root, ".git")
self.short_version = self.record_repo_version("r2", r2_gitdir)
if I18N_PATH:
i18n_git_path = os.path.join(os.path.dirname(I18N_PATH), ".git")
self.record_repo_version("i18n", i18n_git_path)
if self.log_start:
self.log.error("reddit app %s:%s started %s at %s" %
(self.reddit_host, self.reddit_pid,
self.short_version, datetime.now()))
def setup(self, global_conf):
# heavy load mode is read only mode with a different infobar
if self.heavy_load_mode:
self.read_only_mode = True
if hasattr(signal, 'SIGUSR1'):
# not all platforms have user signals
signal.signal(signal.SIGUSR1, thread_dump)
# initialize caches. Any cache-chains built here must be added
# to cache_chains (closed around by reset_caches) so that they
# can properly reset their local components
localcache_cls = (SelfEmptyingCache
if self.running_as_script else LocalCache)
num_mc_clients = self.num_mc_clients
self.cache_chains = {}
self.memcache = CMemcache(self.memcaches, num_clients=num_mc_clients)
self.make_lock = make_lock_factory(self.memcache)
self.stats = Stats(global_conf.get('statsd_addr'),
global_conf.get('statsd_sample_rate'))
if not self.cassandra_seeds:
raise ValueError("cassandra_seeds not set in the .ini")
keyspace = "reddit"
self.cassandra_pools = {
"main":
StatsCollectingConnectionPool(keyspace,
stats=self.stats,
logging_name="main",
server_list=self.cassandra_seeds,
pool_size=len(self.cassandra_seeds),
timeout=2,
max_retries=3,
prefill=False),
"noretries":
StatsCollectingConnectionPool(keyspace,
stats=self.stats,
logging_name="noretries",
server_list=self.cassandra_seeds,
pool_size=len(self.cassandra_seeds),
timeout=.1,
max_retries=0,
prefill=False),
}
perma_memcache = (CMemcache(self.permacache_memcaches,
num_clients=num_mc_clients)
if self.permacache_memcaches else None)
self.permacache = CassandraCacheChain(
localcache_cls(),
CassandraCache('permacache',
self.cassandra_pools[self.cassandra_default_pool],
read_consistency_level=self.cassandra_rcl,
write_consistency_level=self.cassandra_wcl),
memcache=perma_memcache,
lock_factory=self.make_lock)
self.cache_chains.update(permacache=self.permacache)
# hardcache is done after the db info is loaded, and then the
# chains are reset to use the appropriate initial entries
if self.stalecaches:
self.cache = StaleCacheChain(
localcache_cls(),
CMemcache(self.stalecaches, num_clients=num_mc_clients),
self.memcache)
else:
self.cache = MemcacheChain((localcache_cls(), self.memcache))
self.cache_chains.update(cache=self.cache)
self.rendercache = MemcacheChain(
(localcache_cls(),
CMemcache(self.rendercaches,
noreply=True,
no_block=True,
num_clients=num_mc_clients)))
self.cache_chains.update(rendercache=self.rendercache)
self.servicecache = MemcacheChain(
(localcache_cls(),
CMemcache(self.servicecaches, num_clients=num_mc_clients)))
self.cache_chains.update(servicecache=self.servicecache)
self.thing_cache = CacheChain((localcache_cls(), ))
self.cache_chains.update(thing_cache=self.thing_cache)
#load the database info
self.dbm = self.load_db_params(global_conf)
# can't do this until load_db_params() has been called
self.hardcache = HardcacheChain(
(localcache_cls(), self.memcache, HardCache(self)),
cache_negative_results=True)
self.cache_chains.update(hardcache=self.hardcache)
# I know this sucks, but we need non-request-threads to be
# able to reset the caches, so we need them be able to close
# around 'cache_chains' without being able to call getattr on
# 'g'
cache_chains = self.cache_chains.copy()
def reset_caches():
for name, chain in cache_chains.iteritems():
chain.reset()
chain.stats = CacheStats(self.stats, name)
self.reset_caches = reset_caches
self.reset_caches()
#make a query cache
self.stats_collector = QueryStats()
# set the modwindow
self.MODWINDOW = timedelta(self.MODWINDOW)
self.REDDIT_MAIN = bool(os.environ.get('REDDIT_MAIN'))
origin_prefix = self.domain_prefix + "." if self.domain_prefix else ""
self.origin = "http://" + origin_prefix + self.domain
self.secure_domains = set([urlparse(self.payment_domain).netloc])
self.trusted_domains = set([self.domain])
self.trusted_domains.update(self.authorized_cnames)
if self.https_endpoint:
https_url = urlparse(self.https_endpoint)
self.secure_domains.add(https_url.netloc)
self.trusted_domains.add(https_url.hostname)
# load the unique hashed names of files under static
static_files = os.path.join(self.paths.get('static_files'), 'static')
names_file_path = os.path.join(static_files, 'names.json')
if os.path.exists(names_file_path):
with open(names_file_path) as handle:
self.static_names = json.load(handle)
else:
self.static_names = {}
#setup the logger
self.log = logging.getLogger('reddit')
self.log.addHandler(logging.StreamHandler())
if self.debug:
self.log.setLevel(logging.DEBUG)
else:
self.log.setLevel(logging.INFO)
# set log level for pycountry which is chatty
logging.getLogger('pycountry.db').setLevel(logging.CRITICAL)
if not self.media_domain:
self.media_domain = self.domain
if self.media_domain == self.domain:
print("Warning: g.media_domain == g.domain. " +
"This may give untrusted content access to user cookies")
self.reddit_host = socket.gethostname()
self.reddit_pid = os.getpid()
for arg in sys.argv:
tokens = arg.split("=")
if len(tokens) == 2:
k, v = tokens
self.log.debug("Overriding g.%s to %s" % (k, v))
setattr(self, k, v)
#the shutdown toggle
self.shutdown = False
#if we're going to use the query_queue, we need amqp
if self.write_query_queue and not self.amqp_host:
raise Exception("amqp_host must be defined to use the query queue")
# This requirement doesn't *have* to be a requirement, but there are
# bugs at the moment that will pop up if you violate it
if self.write_query_queue and not self.use_query_cache:
raise Exception("write_query_queue requires use_query_cache")
# try to set the source control revision number
try:
self.version = subprocess.check_output(
["git", "rev-parse", "HEAD"])
except subprocess.CalledProcessError, e:
self.log.info("Couldn't read source revision (%r)" % e)
self.version = self.short_version = '(unknown)'
