def test_configure_tracing_with_defaults_legacy_style(self):
baseplate = Baseplate()
self.assertEqual(0, len(baseplate.observers))
baseplate.configure_tracing('test')
self.assertEqual(1, len(baseplate.observers))
tracing_observer = baseplate.observers[0]
self.assertEqual('test', tracing_observer.service_name)
def test_configure_tracing_with_defaults_legacy_style(self):
baseplate = Baseplate()
self.assertEqual(0, len(baseplate.observers))
baseplate.configure_tracing('test')
self.assertEqual(1, len(baseplate.observers))
tracing_observer = baseplate.observers[0]
self.assertEqual('test',tracing_observer.service_name)
def test_configure_tracing_with_defaults_new_style(self):
baseplate = Baseplate()
self.assertEqual(0, len(baseplate.observers))
client = make_client("test")
baseplate.configure_tracing(client)
self.assertEqual(1, len(baseplate.observers))
tracing_observer = baseplate.observers[0]
self.assertEqual('test', tracing_observer.service_name)
def test_configure_tracing_with_defaults_new_style(self):
baseplate = Baseplate()
self.assertEqual(0, len(baseplate.observers))
client = make_client("test")
baseplate.configure_tracing(client)
self.assertEqual(1, len(baseplate.observers))
tracing_observer = baseplate.observers[0]
self.assertEqual('test',tracing_observer.service_name)
def test_configure_tracing_with_args(self):
baseplate = Baseplate()
self.assertEqual(0, len(baseplate.observers))
baseplate.configure_tracing('test',
None,
max_span_queue_size=500,
num_span_workers=5,
span_batch_interval=0.5,
num_conns=100,
sample_rate=0.1)
self.assertEqual(1, len(baseplate.observers))
tracing_observer = baseplate.observers[0]
self.assertEqual('test', tracing_observer.service_name)
def test_configure_tracing_with_args(self):
baseplate = Baseplate()
self.assertEqual(0, len(baseplate.observers))
baseplate.configure_tracing('test',
None,
max_span_queue_size=500,
num_span_workers=5,
span_batch_interval=0.5,
num_conns=100,
sample_rate=0.1)
self.assertEqual(1, len(baseplate.observers))
tracing_observer = baseplate.observers[0]
self.assertEqual('test', tracing_observer.service_name)
def make_wsgi_app(app_config):
cfg = config.parse_config(
app_config, {
"activity": {
"endpoint": config.Endpoint,
},
"tracing": {
"endpoint": config.Optional(config.Endpoint),
"service_name": config.String,
},
})
metrics_client = make_metrics_client(app_config)
pool = ThriftConnectionPool(cfg.activity.endpoint)
baseplate = Baseplate()
baseplate.configure_logging()
baseplate.configure_metrics(metrics_client)
baseplate.configure_tracing(
cfg.tracing.service_name,
cfg.tracing.endpoint,
)
baseplate.add_to_context(
"activity", ThriftContextFactory(pool, ActivityService.Client))
configurator = Configurator(settings=app_config)
baseplate_configurator = BaseplateConfigurator(baseplate)
configurator.include(baseplate_configurator.includeme)
controller = ActivityGateway()
configurator.add_route("health", "/health", request_method="GET")
configurator.add_view(controller.is_healthy,
route_name="health",
renderer="json")
configurator.add_route("pixel",
"/{context_id:[A-Za-z0-9_]{,40}}.png",
request_method="GET")
configurator.add_view(controller.pixel, route_name="pixel")
return configurator.make_wsgi_app()
def make_processor(app_config): # pragma: nocover
cfg = config.parse_config(app_config, {
"activity": {
"window": config.Timespan,
},
"tracing": {
"endpoint": config.Optional(config.Endpoint),
"service_name": config.String,
},
"redis": {
"url": config.String,
"max_connections": config.Optional(config.Integer, default=100),
},
})
metrics_client = metrics_client_from_config(app_config)
tracing_client = tracing_client_from_config(app_config)
error_reporter = error_reporter_from_config(app_config, __name__)
redis_pool = redis.BlockingConnectionPool.from_url(
cfg.redis.url,
max_connections=cfg.redis.max_connections,
timeout=0.1,
)
baseplate = Baseplate()
baseplate.configure_logging()
baseplate.configure_metrics(metrics_client)
baseplate.configure_tracing(tracing_client)
baseplate.configure_error_reporting(error_reporter)
baseplate.add_to_context("redis", RedisContextFactory(redis_pool))
counter = ActivityCounter(cfg.activity.window.total_seconds())
handler = Handler(counter=counter)
processor = ActivityService.ContextProcessor(handler)
event_handler = BaseplateProcessorEventHandler(logger, baseplate)
processor.setEventHandler(event_handler)
return processor
class Globals(object):
spec = {
ConfigValue.int: [
'db_pool_size',
'db_pool_overflow_size',
'commentpane_cache_time',
'num_mc_clients',
'MAX_CAMPAIGNS_PER_LINK',
'MIN_DOWN_LINK',
'MIN_UP_KARMA',
'MIN_DOWN_KARMA',
'MIN_RATE_LIMIT_KARMA',
'MIN_RATE_LIMIT_COMMENT_KARMA',
'HOT_PAGE_AGE',
'ADMIN_COOKIE_TTL',
'ADMIN_COOKIE_MAX_IDLE',
'OTP_COOKIE_TTL',
'hsts_max_age',
'num_comments',
'max_comments',
'max_comments_gold',
'max_comment_parent_walk',
'max_sr_images',
'num_serendipity',
'comment_visits_period',
'butler_max_mentions',
'min_membership_create_community',
'bcrypt_work_factor',
'cassandra_pool_size',
'sr_banned_quota',
'sr_muted_quota',
'sr_wikibanned_quota',
'sr_wikicontributor_quota',
'sr_moderator_invite_quota',
'sr_contributor_quota',
'sr_quota_time',
'sr_invite_limit',
'thumbnail_hidpi_scaling',
'wiki_keep_recent_days',
'wiki_max_page_length_bytes',
'wiki_max_page_name_length',
'wiki_max_page_separators',
'RL_RESET_MINUTES',
'RL_OAUTH_RESET_MINUTES',
'comment_karma_display_floor',
'link_karma_display_floor',
'mobile_auth_gild_time',
'default_total_budget_pennies',
'min_total_budget_pennies',
'max_total_budget_pennies',
'default_bid_pennies',
'min_bid_pennies',
'max_bid_pennies',
'frequency_cap_min',
'frequency_cap_default',
'eu_cookie_max_attempts',
],
ConfigValue.float: [
'statsd_sample_rate',
'querycache_prune_chance',
'RL_AVG_REQ_PER_SEC',
'RL_OAUTH_AVG_REQ_PER_SEC',
'RL_LOGIN_AVG_PER_SEC',
'RL_LOGIN_IP_AVG_PER_SEC',
'RL_SHARE_AVG_PER_SEC',
'tracing_sample_rate',
],
ConfigValue.bool: [
'debug',
'log_start',
'sqlprinting',
'template_debug',
'reload_templates',
'uncompressedJS',
'css_killswitch',
'db_create_tables',
'disallow_db_writes',
'disable_ratelimit',
'amqp_logging',
'read_only_mode',
'disable_wiki',
'heavy_load_mode',
'disable_captcha',
'disable_ads',
'disable_require_admin_otp',
'trust_local_proxies',
'shard_commentstree_queues',
'shard_author_query_queues',
'shard_subreddit_query_queues',
'shard_domain_query_queues',
'authnet_validate',
'ENFORCE_RATELIMIT',
'RL_SITEWIDE_ENABLED',
'RL_OAUTH_SITEWIDE_ENABLED',
'enable_loggedout_experiments',
],
ConfigValue.tuple: [
'plugins',
'stalecaches',
'lockcaches',
'permacache_memcaches',
'cassandra_seeds',
'automatic_reddits',
'hardcache_categories',
'case_sensitive_domains',
'known_image_domains',
'reserved_subdomains',
'offsite_subdomains',
'TRAFFIC_LOG_HOSTS',
'exempt_login_user_agents',
'autoexpand_media_types',
'media_preview_domain_whitelist',
'multi_icons',
'hide_subscribers_srs',
'mcrouter_addr',
],
ConfigValue.tuple_of(ConfigValue.int): [
'thumbnail_size',
'preview_image_max_size',
'preview_image_min_size',
'mobile_ad_image_size',
],
ConfigValue.tuple_of(ConfigValue.float): [
'ios_versions',
'android_versions',
],
ConfigValue.dict(ConfigValue.str, ConfigValue.int): [
'user_agent_ratelimit_regexes',
],
ConfigValue.str: [
'wiki_page_registration_info',
'wiki_page_privacy_policy',
'wiki_page_user_agreement',
'wiki_page_gold_bottlecaps',
'fraud_email',
'feedback_email',
'share_reply',
'community_email',
'smtp_server',
'events_collector_url',
'events_collector_test_url',
'search_provider',
],
ConfigValue.choice(ONE=CL_ONE, QUORUM=CL_QUORUM): [
'cassandra_rcl',
'cassandra_wcl',
],
ConfigValue.choice(zookeeper="zookeeper", config="config"): [
"liveconfig_source",
"secrets_source",
],
ConfigValue.timeinterval: [
'ARCHIVE_AGE',
"vote_queue_grace_period",
],
config_gold_price: [
'gold_month_price',
'gold_year_price',
'cpm_selfserve',
'cpm_selfserve_geotarget_metro',
'cpm_selfserve_geotarget_country',
'cpm_selfserve_collection',
],
ConfigValue.baseplate(
baseplate_config.Optional(baseplate_config.Endpoint)): [
"activity_endpoint",
"tracing_endpoint",
],
ConfigValue.baseplate(
baseplate_config.Optional(baseplate_config.String)): [
"place_redis_url",
],
ConfigValue.baseplate(
baseplate_config.Optional(baseplate_config.Integer)): [
"place_redis_max_connections",
],
ConfigValue.dict(ConfigValue.str, ConfigValue.str): [
'emr_traffic_tags',
],
}
live_config_spec = {
ConfigValue.bool: [
'frontend_logging',
'mobile_gild_first_login',
'precomputed_comment_suggested_sort',
],
ConfigValue.int: [
'captcha_exempt_comment_karma',
'captcha_exempt_link_karma',
'create_sr_account_age_days',
'create_sr_comment_karma',
'create_sr_link_karma',
'cflag_min_votes',
'ads_popularity_threshold',
'precomputed_comment_sort_min_comments',
'comment_vote_update_threshold',
'comment_vote_update_period',
],
ConfigValue.float: [
'cflag_lower_bound',
'cflag_upper_bound',
'spotlight_interest_sub_p',
'spotlight_interest_nosub_p',
'gold_revenue_goal',
'invalid_key_sample_rate',
'events_collector_vote_sample_rate',
'events_collector_poison_sample_rate',
'events_collector_mod_sample_rate',
'events_collector_quarantine_sample_rate',
'events_collector_modmail_sample_rate',
'events_collector_report_sample_rate',
'events_collector_submit_sample_rate',
'events_collector_comment_sample_rate',
'events_collector_use_gzip_chance',
'https_cert_testing_probability',
],
ConfigValue.tuple: [
'fastlane_links',
'listing_chooser_sample_multis',
'discovery_srs',
'proxy_gilding_accounts',
'mweb_blacklist_expressions',
'global_loid_experiments',
'precomputed_comment_sorts',
'mailgun_domains',
],
ConfigValue.str: [
'listing_chooser_gold_multi',
'listing_chooser_explore_sr',
],
ConfigValue.messages: [
'welcomebar_messages',
'sidebar_message',
'gold_sidebar_message',
],
ConfigValue.dict(ConfigValue.str, ConfigValue.int): [
'ticket_groups',
'ticket_user_fields',
],
ConfigValue.dict(ConfigValue.str, ConfigValue.float): [
'pennies_per_server_second',
],
ConfigValue.dict(ConfigValue.str, ConfigValue.str): [
'employee_approved_clients',
'modmail_forwarding_email',
'modmail_account_map',
],
ConfigValue.dict(ConfigValue.str, ConfigValue.choice(**PERMISSIONS)): [
'employees',
],
}
def __init__(self, config, 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.
``config``
The PylonsConfig object passed in from ``config/environment.py``
``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.baseplate = Baseplate()
self.baseplate.configure_logging()
self.baseplate.register(R2BaseplateObserver())
self.baseplate.configure_tracing(
service_name="r2",
tracing_endpoint=self.config.get("tracing_endpoint"),
sample_rate=self.config.get("tracing_sample_rate"),
)
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(
config, 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 __getattr__(self, name):
if not name.startswith('_') and name in self.config:
return self.config[name]
else:
raise AttributeError("g has no attr %r" % name)
def setup(self):
self.env = ''
if (
# handle direct invocation of "nosetests"
"test" in sys.argv[0] or
# handle "setup.py test" and all permutations thereof.
"setup.py" in sys.argv[0] and "test" in sys.argv[1:]):
self.env = "unit_test"
self.queues = queues.declare_queues(self)
self.extension_subdomains = dict(
simple="mobile",
i="compact",
api="api",
rss="rss",
xml="xml",
json="json",
)
################# PROVIDERS
self.auth_provider = select_provider(
self.config,
self.pkg_resources_working_set,
"r2.provider.auth",
self.authentication_provider,
)
self.media_provider = select_provider(
self.config,
self.pkg_resources_working_set,
"r2.provider.media",
self.media_provider,
)
self.cdn_provider = select_provider(
self.config,
self.pkg_resources_working_set,
"r2.provider.cdn",
self.cdn_provider,
)
self.ticket_provider = select_provider(
self.config,
self.pkg_resources_working_set,
"r2.provider.support",
# TODO: fix this later, it refuses to pick up
# g.config['ticket_provider'] value, so hardcoding for now.
# really, the next uncommented line should be:
#self.ticket_provider,
# instead of:
"zendesk",
)
self.image_resizing_provider = select_provider(
self.config,
self.pkg_resources_working_set,
"r2.provider.image_resizing",
self.image_resizing_provider,
)
self.email_provider = select_provider(
self.config,
self.pkg_resources_working_set,
"r2.provider.email",
self.email_provider,
)
self.startup_timer.intermediate("providers")
################# CONFIGURATION
# AMQP is required
if not self.amqp_host:
raise ValueError("amqp_host not set in the .ini")
if not self.cassandra_seeds:
raise ValueError("cassandra_seeds not set in the .ini")
# heavy load mode is read only mode with a different infobar
if self.heavy_load_mode:
self.read_only_mode = True
origin_prefix = self.domain_prefix + "." if self.domain_prefix else ""
self.origin = self.default_scheme + "://" + origin_prefix + self.domain
self.trusted_domains = set([self.domain])
if self.https_endpoint:
https_url = urlparse(self.https_endpoint)
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 = {}
# make python warnings go through the logging system
logging.captureWarnings(capture=True)
log = logging.getLogger('reddit')
# when we're a script (paster run) just set up super simple logging
if self.running_as_script:
log.setLevel(logging.INFO)
log.addHandler(logging.StreamHandler())
# if in debug mode, override the logging level to DEBUG
if self.debug:
log.setLevel(logging.DEBUG)
# attempt to figure out which pool we're in and add that to the
# LogRecords.
try:
with open("/etc/ec2_asg", "r") as f:
pool = f.read().strip()
# clean up the pool name since we're putting stuff after "-"
pool = pool.partition("-")[0]
except IOError:
pool = "reddit-app"
self.log = logging.LoggerAdapter(log, {"pool": pool})
# set locations
locations = pkg_resources.resource_stream(__name__,
"../data/locations.json")
self.locations = json.loads(locations.read())
if not self.media_domain:
self.media_domain = self.domain
if self.media_domain == self.domain:
print >> sys.stderr, (
"Warning: g.media_domain == g.domain. " +
"This may give untrusted content access to user cookies")
if self.oauth_domain == self.domain:
print >> sys.stderr, ("Warning: g.oauth_domain == g.domain. "
"CORS requests to g.domain will be allowed")
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)
self.reddit_host = socket.gethostname()
self.reddit_pid = os.getpid()
if hasattr(signal, 'SIGUSR1'):
# not all platforms have user signals
signal.signal(signal.SIGUSR1, thread_dump)
locale.setlocale(locale.LC_ALL, self.locale)
# Pre-calculate ratelimit values
self.RL_RESET_SECONDS = self.config["RL_RESET_MINUTES"] * 60
self.RL_MAX_REQS = int(self.config["RL_AVG_REQ_PER_SEC"] *
self.RL_RESET_SECONDS)
self.RL_OAUTH_RESET_SECONDS = self.config["RL_OAUTH_RESET_MINUTES"] * 60
self.RL_OAUTH_MAX_REQS = int(self.config["RL_OAUTH_AVG_REQ_PER_SEC"] *
self.RL_OAUTH_RESET_SECONDS)
self.RL_LOGIN_MAX_REQS = int(self.config["RL_LOGIN_AVG_PER_SEC"] *
self.RL_RESET_SECONDS)
self.RL_LOGIN_IP_MAX_REQS = int(
self.config["RL_LOGIN_IP_AVG_PER_SEC"] * self.RL_RESET_SECONDS)
self.RL_SHARE_MAX_REQS = int(self.config["RL_SHARE_AVG_PER_SEC"] *
self.RL_RESET_SECONDS)
# Compile ratelimit regexs
user_agent_ratelimit_regexes = {}
for agent_re, limit in self.user_agent_ratelimit_regexes.iteritems():
user_agent_ratelimit_regexes[re.compile(agent_re)] = limit
self.user_agent_ratelimit_regexes = user_agent_ratelimit_regexes
self.startup_timer.intermediate("configuration")
################# ZOOKEEPER
zk_hosts = self.config["zookeeper_connection_string"]
zk_username = self.config["zookeeper_username"]
zk_password = self.config["zookeeper_password"]
self.zookeeper = connect_to_zookeeper(zk_hosts,
(zk_username, zk_password))
self.throttles = IPNetworkLiveList(
self.zookeeper,
root="/throttles",
reduced_data_node="/throttles_reduced",
)
parser = ConfigParser.RawConfigParser()
parser.optionxform = str
parser.read([self.config["__file__"]])
if self.config["liveconfig_source"] == "zookeeper":
self.live_config = LiveConfig(self.zookeeper, LIVE_CONFIG_NODE)
else:
self.live_config = extract_live_config(parser, self.plugins)
if self.config["secrets_source"] == "zookeeper":
self.secrets = fetch_secrets(self.zookeeper)
else:
self.secrets = extract_secrets(parser)
################# PRIVILEGED USERS
self.admins = PermissionFilteredEmployeeList(self.live_config,
type="admin")
self.sponsors = PermissionFilteredEmployeeList(self.live_config,
type="sponsor")
self.employees = PermissionFilteredEmployeeList(self.live_config,
type="employee")
# Store which OAuth clients employees may use, the keys are just for
# readability.
self.employee_approved_clients = \
self.live_config["employee_approved_clients"].values()
self.startup_timer.intermediate("zookeeper")
################# MEMCACHE
num_mc_clients = self.num_mc_clients
# a smaller pool of caches used only for distributed locks.
self.lock_cache = CMemcache(
"lock",
self.lockcaches,
num_clients=num_mc_clients,
)
self.make_lock = make_lock_factory(self.lock_cache, self.stats)
# memcaches used in front of the permacache CF in cassandra.
# XXX: this is a legacy thing; permacache was made when C* didn't have
# a row cache.
permacache_memcaches = CMemcache(
"perma",
self.permacache_memcaches,
min_compress_len=1400,
num_clients=num_mc_clients,
)
# the stalecache is a memcached local to the current app server used
# for data that's frequently fetched but doesn't need to be fresh.
if self.stalecaches:
stalecaches = CMemcache(
"stale",
self.stalecaches,
num_clients=num_mc_clients,
)
else:
stalecaches = None
self.startup_timer.intermediate("memcache")
################# MCROUTER
self.mcrouter = Mcrouter(
"mcrouter",
self.mcrouter_addr,
min_compress_len=1400,
num_clients=num_mc_clients,
)
################# THRIFT-BASED SERVICES
activity_endpoint = self.config.get("activity_endpoint")
if activity_endpoint:
# make ActivityInfo objects rendercache-key friendly
# TODO: figure out a more general solution for this if
# we need to do this for other thrift-generated objects
ActivityInfo.cache_key = lambda self, style: repr(self)
activity_pool = ThriftConnectionPool(activity_endpoint,
timeout=0.1)
self.baseplate.add_to_context(
"activity_service",
ThriftContextFactory(activity_pool, ActivityService.Client))
self.startup_timer.intermediate("thrift")
################# PLACE
# e.g. "redis://localhost:6379/"
place_redis_url = self.config.get("place_redis_url")
if place_redis_url:
place_redis_pool = redis.BlockingConnectionPool.from_url(
place_redis_url,
max_connections=self.config.get("place_redis_max_connections",
1),
timeout=0.1,
)
self.baseplate.add_to_context(
"place_redis", RedisContextFactory(place_redis_pool))
################# CASSANDRA
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=4,
max_retries=3,
prefill=False),
}
permacache_cf = Permacache._setup_column_family(
'permacache',
self.cassandra_pools[self.cassandra_default_pool],
)
self.startup_timer.intermediate("cassandra")
################# POSTGRES
self.dbm = self.load_db_params()
self.startup_timer.intermediate("postgres")
################# CHAINS
# 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
cache_chains = {}
localcache_cls = (SelfEmptyingCache
if self.running_as_script else LocalCache)
if stalecaches:
self.gencache = StaleCacheChain(
localcache_cls(),
stalecaches,
self.mcrouter,
)
else:
self.gencache = CacheChain((localcache_cls(), self.mcrouter))
cache_chains.update(gencache=self.gencache)
if stalecaches:
self.thingcache = StaleCacheChain(
localcache_cls(),
stalecaches,
self.mcrouter,
)
else:
self.thingcache = CacheChain((localcache_cls(), self.mcrouter))
cache_chains.update(thingcache=self.thingcache)
if stalecaches:
self.memoizecache = StaleCacheChain(
localcache_cls(),
stalecaches,
self.mcrouter,
)
else:
self.memoizecache = MemcacheChain(
(localcache_cls(), self.mcrouter))
cache_chains.update(memoizecache=self.memoizecache)
if stalecaches:
self.srmembercache = StaleCacheChain(
localcache_cls(),
stalecaches,
self.mcrouter,
)
else:
self.srmembercache = MemcacheChain(
(localcache_cls(), self.mcrouter))
cache_chains.update(srmembercache=self.srmembercache)
if stalecaches:
self.relcache = StaleCacheChain(
localcache_cls(),
stalecaches,
self.mcrouter,
)
else:
self.relcache = MemcacheChain((localcache_cls(), self.mcrouter))
cache_chains.update(relcache=self.relcache)
self.ratelimitcache = MemcacheChain((localcache_cls(), self.mcrouter))
cache_chains.update(ratelimitcache=self.ratelimitcache)
# rendercache holds rendered partial templates.
self.rendercache = MemcacheChain((
localcache_cls(),
self.mcrouter,
))
cache_chains.update(rendercache=self.rendercache)
# commentpanecaches hold fully rendered comment panes
self.commentpanecache = MemcacheChain((
localcache_cls(),
self.mcrouter,
))
cache_chains.update(commentpanecache=self.commentpanecache)
# cassandra_local_cache is used for request-local caching in tdb_cassandra
self.cassandra_local_cache = localcache_cls()
cache_chains.update(cassandra_local_cache=self.cassandra_local_cache)
if stalecaches:
permacache_cache = StaleCacheChain(
localcache_cls(),
stalecaches,
permacache_memcaches,
)
else:
permacache_cache = CacheChain(
(localcache_cls(), permacache_memcaches), )
cache_chains.update(permacache=permacache_cache)
self.permacache = Permacache(
permacache_cache,
permacache_cf,
lock_factory=self.make_lock,
)
# hardcache is used for various things that tend to expire
# TODO: replace hardcache w/ cassandra stuff
self.hardcache = HardcacheChain(
(localcache_cls(), HardCache(self)),
cache_negative_results=True,
)
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'
def reset_caches():
for name, chain in cache_chains.iteritems():
if isinstance(chain, TransitionalCache):
chain = chain.read_chain
chain.reset()
if isinstance(chain, LocalCache):
continue
elif isinstance(chain, StaleCacheChain):
chain.stats = StaleCacheStats(self.stats, name)
else:
chain.stats = CacheStats(self.stats, name)
self.cache_chains = cache_chains
self.reset_caches = reset_caches
self.reset_caches()
self.startup_timer.intermediate("cache_chains")
# 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)
# Initialize the amqp module globals, start the worker, etc.
r2.lib.amqp.initialize(self)
self.events = EventQueue()
self.startup_timer.intermediate("revisions")
def setup_complete(self):
self.startup_timer.stop()
self.stats.flush()
if self.log_start:
self.log.error("%s:%s started %s at %s (took %.02fs)",
self.reddit_host, self.reddit_pid,
self.short_version,
datetime.now().strftime("%H:%M:%S"),
self.startup_timer.elapsed_seconds())
if einhorn.is_worker():
einhorn.ack_startup()
def record_repo_version(self, repo_name, git_dir):
"""Get the currently checked out git revision for a given repository,
record it in g.versions, and return the short version of the hash."""
try:
subprocess.check_output
except AttributeError:
# python 2.6 compat
pass
else:
try:
revision = subprocess.check_output(
["git", "--git-dir", git_dir, "rev-parse", "HEAD"])
except subprocess.CalledProcessError, e:
self.log.warning("Unable to fetch git revision: %r", e)
else:
class Globals(object):
spec = {
ConfigValue.int: [
'db_pool_size',
'db_pool_overflow_size',
'commentpane_cache_time',
'num_mc_clients',
'MAX_CAMPAIGNS_PER_LINK',
'MIN_DOWN_LINK',
'MIN_UP_KARMA',
'MIN_DOWN_KARMA',
'MIN_RATE_LIMIT_KARMA',
'MIN_RATE_LIMIT_COMMENT_KARMA',
'HOT_PAGE_AGE',
'ADMIN_COOKIE_TTL',
'ADMIN_COOKIE_MAX_IDLE',
'OTP_COOKIE_TTL',
'hsts_max_age',
'num_comments',
'max_comments',
'max_comments_gold',
'max_comment_parent_walk',
'max_sr_images',
'num_serendipity',
'comment_visits_period',
'butler_max_mentions',
'min_membership_create_community',
'bcrypt_work_factor',
'cassandra_pool_size',
'sr_banned_quota',
'sr_muted_quota',
'sr_wikibanned_quota',
'sr_wikicontributor_quota',
'sr_moderator_invite_quota',
'sr_contributor_quota',
'sr_quota_time',
'sr_invite_limit',
'thumbnail_hidpi_scaling',
'wiki_keep_recent_days',
'wiki_max_page_length_bytes',
'wiki_max_page_name_length',
'wiki_max_page_separators',
'RL_RESET_MINUTES',
'RL_OAUTH_RESET_MINUTES',
'comment_karma_display_floor',
'link_karma_display_floor',
'mobile_auth_gild_time',
'default_total_budget_pennies',
'min_total_budget_pennies',
'max_total_budget_pennies',
'default_bid_pennies',
'min_bid_pennies',
'max_bid_pennies',
'frequency_cap_min',
'frequency_cap_default',
'eu_cookie_max_attempts',
],
ConfigValue.float: [
'statsd_sample_rate',
'querycache_prune_chance',
'RL_AVG_REQ_PER_SEC',
'RL_OAUTH_AVG_REQ_PER_SEC',
'RL_LOGIN_AVG_PER_SEC',
'RL_LOGIN_IP_AVG_PER_SEC',
'RL_SHARE_AVG_PER_SEC',
'tracing_sample_rate',
],
ConfigValue.bool: [
'debug',
'log_start',
'sqlprinting',
'template_debug',
'reload_templates',
'uncompressedJS',
'css_killswitch',
'db_create_tables',
'disallow_db_writes',
'disable_ratelimit',
'amqp_logging',
'read_only_mode',
'disable_wiki',
'heavy_load_mode',
'disable_captcha',
'disable_ads',
'disable_require_admin_otp',
'trust_local_proxies',
'shard_commentstree_queues',
'shard_author_query_queues',
'shard_subreddit_query_queues',
'shard_domain_query_queues',
'authnet_validate',
'ENFORCE_RATELIMIT',
'RL_SITEWIDE_ENABLED',
'RL_OAUTH_SITEWIDE_ENABLED',
'enable_loggedout_experiments',
],
ConfigValue.tuple: [
'plugins',
'stalecaches',
'lockcaches',
'permacache_memcaches',
'cassandra_seeds',
'automatic_reddits',
'hardcache_categories',
'case_sensitive_domains',
'known_image_domains',
'reserved_subdomains',
'offsite_subdomains',
'TRAFFIC_LOG_HOSTS',
'exempt_login_user_agents',
'autoexpand_media_types',
'media_preview_domain_whitelist',
'multi_icons',
'hide_subscribers_srs',
'mcrouter_addr',
],
ConfigValue.tuple_of(ConfigValue.int): [
'thumbnail_size',
'preview_image_max_size',
'preview_image_min_size',
'mobile_ad_image_size',
],
ConfigValue.tuple_of(ConfigValue.float): [
'ios_versions',
'android_versions',
],
ConfigValue.dict(ConfigValue.str, ConfigValue.int): [
'user_agent_ratelimit_regexes',
],
ConfigValue.str: [
'wiki_page_registration_info',
'wiki_page_privacy_policy',
'wiki_page_user_agreement',
'wiki_page_gold_bottlecaps',
'fraud_email',
'feedback_email',
'share_reply',
'community_email',
'smtp_server',
'events_collector_url',
'events_collector_test_url',
'search_provider',
],
ConfigValue.choice(ONE=CL_ONE, QUORUM=CL_QUORUM): [
'cassandra_rcl',
'cassandra_wcl',
],
ConfigValue.choice(zookeeper="zookeeper", config="config"): [
"liveconfig_source",
"secrets_source",
],
ConfigValue.timeinterval: [
'ARCHIVE_AGE',
"vote_queue_grace_period",
],
config_gold_price: [
'gold_month_price',
'gold_year_price',
'cpm_selfserve',
'cpm_selfserve_geotarget_metro',
'cpm_selfserve_geotarget_country',
'cpm_selfserve_collection',
],
ConfigValue.baseplate(baseplate_config.Optional(baseplate_config.Endpoint)): [
"activity_endpoint",
"tracing_endpoint",
],
ConfigValue.dict(ConfigValue.str, ConfigValue.str): [
'emr_traffic_tags',
],
}
live_config_spec = {
ConfigValue.bool: [
'frontend_logging',
'mobile_gild_first_login',
'precomputed_comment_suggested_sort',
],
ConfigValue.int: [
'captcha_exempt_comment_karma',
'captcha_exempt_link_karma',
'create_sr_account_age_days',
'create_sr_comment_karma',
'create_sr_link_karma',
'cflag_min_votes',
'ads_popularity_threshold',
'precomputed_comment_sort_min_comments',
'comment_vote_update_threshold',
'comment_vote_update_period',
],
ConfigValue.float: [
'cflag_lower_bound',
'cflag_upper_bound',
'spotlight_interest_sub_p',
'spotlight_interest_nosub_p',
'gold_revenue_goal',
'invalid_key_sample_rate',
'events_collector_vote_sample_rate',
'events_collector_poison_sample_rate',
'events_collector_mod_sample_rate',
'events_collector_quarantine_sample_rate',
'events_collector_modmail_sample_rate',
'events_collector_report_sample_rate',
'events_collector_submit_sample_rate',
'events_collector_comment_sample_rate',
'events_collector_use_gzip_chance',
'https_cert_testing_probability',
],
ConfigValue.tuple: [
'fastlane_links',
'listing_chooser_sample_multis',
'discovery_srs',
'proxy_gilding_accounts',
'mweb_blacklist_expressions',
'global_loid_experiments',
'precomputed_comment_sorts',
'mailgun_domains',
],
ConfigValue.str: [
'listing_chooser_gold_multi',
'listing_chooser_explore_sr',
],
ConfigValue.messages: [
'welcomebar_messages',
'sidebar_message',
'gold_sidebar_message',
],
ConfigValue.dict(ConfigValue.str, ConfigValue.int): [
'ticket_groups',
'ticket_user_fields',
],
ConfigValue.dict(ConfigValue.str, ConfigValue.float): [
'pennies_per_server_second',
],
ConfigValue.dict(ConfigValue.str, ConfigValue.str): [
'employee_approved_clients',
'modmail_forwarding_email',
'modmail_account_map',
],
ConfigValue.dict(ConfigValue.str, ConfigValue.choice(**PERMISSIONS)): [
'employees',
],
}
def __init__(self, config, 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.
``config``
The PylonsConfig object passed in from ``config/environment.py``
``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.baseplate = Baseplate()
self.baseplate.configure_logging()
self.baseplate.register(R2BaseplateObserver())
self.baseplate.configure_tracing(
"r2",
tracing_endpoint=self.config.get("tracing_endpoint"),
sample_rate=self.config.get("tracing_sample_rate"),
)
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(
config, 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 __getattr__(self, name):
if not name.startswith('_') and name in self.config:
return self.config[name]
else:
raise AttributeError("g has no attr %r" % name)
def setup(self):
self.env = ''
if (
# handle direct invocation of "nosetests"
"test" in sys.argv[0] or
# handle "setup.py test" and all permutations thereof.
"setup.py" in sys.argv[0] and "test" in sys.argv[1:]
):
self.env = "unit_test"
self.queues = queues.declare_queues(self)
self.extension_subdomains = dict(
simple="mobile",
i="compact",
api="api",
rss="rss",
xml="xml",
json="json",
)
################# PROVIDERS
self.auth_provider = select_provider(
self.config,
self.pkg_resources_working_set,
"r2.provider.auth",
self.authentication_provider,
)
self.media_provider = select_provider(
self.config,
self.pkg_resources_working_set,
"r2.provider.media",
self.media_provider,
)
self.cdn_provider = select_provider(
self.config,
self.pkg_resources_working_set,
"r2.provider.cdn",
self.cdn_provider,
)
self.ticket_provider = select_provider(
self.config,
self.pkg_resources_working_set,
"r2.provider.support",
# TODO: fix this later, it refuses to pick up
# g.config['ticket_provider'] value, so hardcoding for now.
# really, the next uncommented line should be:
#self.ticket_provider,
# instead of:
"zendesk",
)
self.image_resizing_provider = select_provider(
self.config,
self.pkg_resources_working_set,
"r2.provider.image_resizing",
self.image_resizing_provider,
)
self.email_provider = select_provider(
self.config,
self.pkg_resources_working_set,
"r2.provider.email",
self.email_provider,
)
self.startup_timer.intermediate("providers")
################# CONFIGURATION
# AMQP is required
if not self.amqp_host:
raise ValueError("amqp_host not set in the .ini")
if not self.cassandra_seeds:
raise ValueError("cassandra_seeds not set in the .ini")
# heavy load mode is read only mode with a different infobar
if self.heavy_load_mode:
self.read_only_mode = True
origin_prefix = self.domain_prefix + "." if self.domain_prefix else ""
self.origin = self.default_scheme + "://" + origin_prefix + self.domain
self.trusted_domains = set([self.domain])
if self.https_endpoint:
https_url = urlparse(self.https_endpoint)
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 = {}
# make python warnings go through the logging system
logging.captureWarnings(capture=True)
log = logging.getLogger('reddit')
# when we're a script (paster run) just set up super simple logging
if self.running_as_script:
log.setLevel(logging.INFO)
log.addHandler(logging.StreamHandler())
# if in debug mode, override the logging level to DEBUG
if self.debug:
log.setLevel(logging.DEBUG)
# attempt to figure out which pool we're in and add that to the
# LogRecords.
try:
with open("/etc/ec2_asg", "r") as f:
pool = f.read().strip()
# clean up the pool name since we're putting stuff after "-"
pool = pool.partition("-")[0]
except IOError:
pool = "reddit-app"
self.log = logging.LoggerAdapter(log, {"pool": pool})
# set locations
locations = pkg_resources.resource_stream(__name__,
"../data/locations.json")
self.locations = json.loads(locations.read())
if not self.media_domain:
self.media_domain = self.domain
if self.media_domain == self.domain:
print >> sys.stderr, ("Warning: g.media_domain == g.domain. " +
"This may give untrusted content access to user cookies")
if self.oauth_domain == self.domain:
print >> sys.stderr, ("Warning: g.oauth_domain == g.domain. "
"CORS requests to g.domain will be allowed")
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)
self.reddit_host = socket.gethostname()
self.reddit_pid = os.getpid()
if hasattr(signal, 'SIGUSR1'):
# not all platforms have user signals
signal.signal(signal.SIGUSR1, thread_dump)
locale.setlocale(locale.LC_ALL, self.locale)
# Pre-calculate ratelimit values
self.RL_RESET_SECONDS = self.config["RL_RESET_MINUTES"] * 60
self.RL_MAX_REQS = int(self.config["RL_AVG_REQ_PER_SEC"] *
self.RL_RESET_SECONDS)
self.RL_OAUTH_RESET_SECONDS = self.config["RL_OAUTH_RESET_MINUTES"] * 60
self.RL_OAUTH_MAX_REQS = int(self.config["RL_OAUTH_AVG_REQ_PER_SEC"] *
self.RL_OAUTH_RESET_SECONDS)
self.RL_LOGIN_MAX_REQS = int(self.config["RL_LOGIN_AVG_PER_SEC"] *
self.RL_RESET_SECONDS)
self.RL_LOGIN_IP_MAX_REQS = int(self.config["RL_LOGIN_IP_AVG_PER_SEC"] *
self.RL_RESET_SECONDS)
self.RL_SHARE_MAX_REQS = int(self.config["RL_SHARE_AVG_PER_SEC"] *
self.RL_RESET_SECONDS)
# Compile ratelimit regexs
user_agent_ratelimit_regexes = {}
for agent_re, limit in self.user_agent_ratelimit_regexes.iteritems():
user_agent_ratelimit_regexes[re.compile(agent_re)] = limit
self.user_agent_ratelimit_regexes = user_agent_ratelimit_regexes
self.startup_timer.intermediate("configuration")
################# ZOOKEEPER
zk_hosts = self.config["zookeeper_connection_string"]
zk_username = self.config["zookeeper_username"]
zk_password = self.config["zookeeper_password"]
self.zookeeper = connect_to_zookeeper(zk_hosts, (zk_username,
zk_password))
self.throttles = IPNetworkLiveList(
self.zookeeper,
root="/throttles",
reduced_data_node="/throttles_reduced",
)
parser = ConfigParser.RawConfigParser()
parser.optionxform = str
parser.read([self.config["__file__"]])
if self.config["liveconfig_source"] == "zookeeper":
self.live_config = LiveConfig(self.zookeeper, LIVE_CONFIG_NODE)
else:
self.live_config = extract_live_config(parser, self.plugins)
if self.config["secrets_source"] == "zookeeper":
self.secrets = fetch_secrets(self.zookeeper)
else:
self.secrets = extract_secrets(parser)
################# PRIVILEGED USERS
self.admins = PermissionFilteredEmployeeList(
self.live_config, type="admin")
self.sponsors = PermissionFilteredEmployeeList(
self.live_config, type="sponsor")
self.employees = PermissionFilteredEmployeeList(
self.live_config, type="employee")
# Store which OAuth clients employees may use, the keys are just for
# readability.
self.employee_approved_clients = \
self.live_config["employee_approved_clients"].values()
self.startup_timer.intermediate("zookeeper")
################# MEMCACHE
num_mc_clients = self.num_mc_clients
# a smaller pool of caches used only for distributed locks.
self.lock_cache = CMemcache(
"lock",
self.lockcaches,
num_clients=num_mc_clients,
)
self.make_lock = make_lock_factory(self.lock_cache, self.stats)
# memcaches used in front of the permacache CF in cassandra.
# XXX: this is a legacy thing; permacache was made when C* didn't have
# a row cache.
permacache_memcaches = CMemcache(
"perma",
self.permacache_memcaches,
min_compress_len=1400,
num_clients=num_mc_clients,
)
# the stalecache is a memcached local to the current app server used
# for data that's frequently fetched but doesn't need to be fresh.
if self.stalecaches:
stalecaches = CMemcache(
"stale",
self.stalecaches,
num_clients=num_mc_clients,
)
else:
stalecaches = None
self.startup_timer.intermediate("memcache")
################# MCROUTER
self.mcrouter = Mcrouter(
"mcrouter",
self.mcrouter_addr,
min_compress_len=1400,
num_clients=num_mc_clients,
)
################# THRIFT-BASED SERVICES
activity_endpoint = self.config.get("activity_endpoint")
if activity_endpoint:
# make ActivityInfo objects rendercache-key friendly
# TODO: figure out a more general solution for this if
# we need to do this for other thrift-generated objects
ActivityInfo.cache_key = lambda self, style: repr(self)
activity_pool = ThriftConnectionPool(activity_endpoint, timeout=0.1)
self.baseplate.add_to_context("activity_service",
ThriftContextFactory(activity_pool, ActivityService.Client))
self.startup_timer.intermediate("thrift")
################# CASSANDRA
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=4,
max_retries=3,
prefill=False
),
}
permacache_cf = Permacache._setup_column_family(
'permacache',
self.cassandra_pools[self.cassandra_default_pool],
)
self.startup_timer.intermediate("cassandra")
################# POSTGRES
self.dbm = self.load_db_params()
self.startup_timer.intermediate("postgres")
################# CHAINS
# 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
cache_chains = {}
localcache_cls = (SelfEmptyingCache if self.running_as_script
else LocalCache)
if stalecaches:
self.gencache = StaleCacheChain(
localcache_cls(),
stalecaches,
self.mcrouter,
)
else:
self.gencache = CacheChain((localcache_cls(), self.mcrouter))
cache_chains.update(gencache=self.gencache)
if stalecaches:
self.thingcache = StaleCacheChain(
localcache_cls(),
stalecaches,
self.mcrouter,
)
else:
self.thingcache = CacheChain((localcache_cls(), self.mcrouter))
cache_chains.update(thingcache=self.thingcache)
if stalecaches:
self.memoizecache = StaleCacheChain(
localcache_cls(),
stalecaches,
self.mcrouter,
)
else:
self.memoizecache = MemcacheChain(
(localcache_cls(), self.mcrouter))
cache_chains.update(memoizecache=self.memoizecache)
if stalecaches:
self.srmembercache = StaleCacheChain(
localcache_cls(),
stalecaches,
self.mcrouter,
)
else:
self.srmembercache = MemcacheChain(
(localcache_cls(), self.mcrouter))
cache_chains.update(srmembercache=self.srmembercache)
if stalecaches:
self.relcache = StaleCacheChain(
localcache_cls(),
stalecaches,
self.mcrouter,
)
else:
self.relcache = MemcacheChain(
(localcache_cls(), self.mcrouter))
cache_chains.update(relcache=self.relcache)
self.ratelimitcache = MemcacheChain(
(localcache_cls(), self.mcrouter))
cache_chains.update(ratelimitcache=self.ratelimitcache)
# rendercache holds rendered partial templates.
self.rendercache = MemcacheChain((
localcache_cls(),
self.mcrouter,
))
cache_chains.update(rendercache=self.rendercache)
# commentpanecaches hold fully rendered comment panes
self.commentpanecache = MemcacheChain((
localcache_cls(),
self.mcrouter,
))
cache_chains.update(commentpanecache=self.commentpanecache)
# cassandra_local_cache is used for request-local caching in tdb_cassandra
self.cassandra_local_cache = localcache_cls()
cache_chains.update(cassandra_local_cache=self.cassandra_local_cache)
if stalecaches:
permacache_cache = StaleCacheChain(
localcache_cls(),
stalecaches,
permacache_memcaches,
)
else:
permacache_cache = CacheChain(
(localcache_cls(), permacache_memcaches),
)
cache_chains.update(permacache=permacache_cache)
self.permacache = Permacache(
permacache_cache,
permacache_cf,
lock_factory=self.make_lock,
)
# hardcache is used for various things that tend to expire
# TODO: replace hardcache w/ cassandra stuff
self.hardcache = HardcacheChain(
(localcache_cls(), HardCache(self)),
cache_negative_results=True,
)
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'
def reset_caches():
for name, chain in cache_chains.iteritems():
if isinstance(chain, TransitionalCache):
chain = chain.read_chain
chain.reset()
if isinstance(chain, LocalCache):
continue
elif isinstance(chain, StaleCacheChain):
chain.stats = StaleCacheStats(self.stats, name)
else:
chain.stats = CacheStats(self.stats, name)
self.cache_chains = cache_chains
self.reset_caches = reset_caches
self.reset_caches()
self.startup_timer.intermediate("cache_chains")
# 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)
# Initialize the amqp module globals, start the worker, etc.
r2.lib.amqp.initialize(self)
self.events = EventQueue()
self.startup_timer.intermediate("revisions")
def setup_complete(self):
self.startup_timer.stop()
self.stats.flush()
if self.log_start:
self.log.error(
"%s:%s started %s at %s (took %.02fs)",
self.reddit_host,
self.reddit_pid,
self.short_version,
datetime.now().strftime("%H:%M:%S"),
self.startup_timer.elapsed_seconds()
)
if einhorn.is_worker():
einhorn.ack_startup()
def record_repo_version(self, repo_name, git_dir):
"""Get the currently checked out git revision for a given repository,
record it in g.versions, and return the short version of the hash."""
try:
subprocess.check_output
except AttributeError:
# python 2.6 compat
pass
else:
try:
revision = subprocess.check_output(["git",
"--git-dir", git_dir,
"rev-parse", "HEAD"])
except subprocess.CalledProcessError, e:
self.log.warning("Unable to fetch git revision: %r", e)
else:
