def _main_greenlet(config):
"""
The root of our tree of greenlets. Responsible for restarting
its children if desired.
"""
try:
_log.info("Connecting to etcd to get our configuration.")
hosts_ipset_v4 = IpsetActor(HOSTS_IPSET_V4)
etcd_api = EtcdAPI(config, hosts_ipset_v4)
etcd_api.start()
# Ask the EtcdAPI to fill in the global config object before we
# proceed. We don't yet support config updates.
config_loaded = etcd_api.load_config(async=False)
config_loaded.wait()
# Ensure the Kernel's global options are correctly configured for
# Calico.
devices.configure_global_kernel_config()
_log.info("Main greenlet: Configuration loaded, starting remaining "
"actors...")
monitored_items = []
if config.PROM_METRICS_ENABLED:
httpd = HTTPServer(("0.0.0.0", config.PROM_METRICS_PORT),
MetricsHandler)
stats_server = gevent.Greenlet(httpd.serve_forever)
stats_server.start()
monitored_items.append(stats_server)
v4_filter_updater = IptablesUpdater("filter", ip_version=4,
config=config)
v4_nat_updater = IptablesUpdater("nat", ip_version=4, config=config)
v4_ipset_mgr = IpsetManager(IPV4, config)
v4_masq_manager = MasqueradeManager(IPV4, v4_nat_updater)
v4_rules_manager = RulesManager(config,
4,
v4_filter_updater,
v4_ipset_mgr)
v4_dispatch_chains = DispatchChains(config, 4, v4_filter_updater)
v4_fip_manager = FloatingIPManager(config, 4, v4_nat_updater)
v4_ep_manager = EndpointManager(config,
IPV4,
v4_filter_updater,
v4_dispatch_chains,
v4_rules_manager,
v4_fip_manager,
etcd_api.status_reporter)
cleanup_updaters = [v4_filter_updater, v4_nat_updater]
cleanup_ip_mgrs = [v4_ipset_mgr]
update_splitter_args = [v4_ipset_mgr,
v4_rules_manager,
v4_ep_manager,
v4_masq_manager,
v4_nat_updater]
v6_enabled = os.path.exists("/proc/sys/net/ipv6")
if v6_enabled:
v6_raw_updater = IptablesUpdater("raw", ip_version=6, config=config)
v6_filter_updater = IptablesUpdater("filter", ip_version=6,
config=config)
v6_nat_updater = IptablesUpdater("nat", ip_version=6, config=config)
v6_ipset_mgr = IpsetManager(IPV6, config)
v6_rules_manager = RulesManager(config,
6,
v6_filter_updater,
v6_ipset_mgr)
v6_dispatch_chains = DispatchChains(config, 6, v6_filter_updater)
v6_fip_manager = FloatingIPManager(config, 6, v6_nat_updater)
v6_ep_manager = EndpointManager(config,
IPV6,
v6_filter_updater,
v6_dispatch_chains,
v6_rules_manager,
v6_fip_manager,
etcd_api.status_reporter)
cleanup_updaters.append(v6_filter_updater)
cleanup_ip_mgrs.append(v6_ipset_mgr)
update_splitter_args += [v6_ipset_mgr,
v6_rules_manager,
v6_ep_manager,
v6_raw_updater,
v6_nat_updater]
cleanup_mgr = CleanupManager(config, cleanup_updaters, cleanup_ip_mgrs)
update_splitter_args.append(cleanup_mgr)
update_splitter = UpdateSplitter(update_splitter_args)
iface_watcher = InterfaceWatcher(update_splitter)
_log.info("Starting actors.")
hosts_ipset_v4.start()
cleanup_mgr.start()
v4_filter_updater.start()
v4_nat_updater.start()
v4_ipset_mgr.start()
v4_masq_manager.start()
v4_rules_manager.start()
v4_dispatch_chains.start()
v4_ep_manager.start()
v4_fip_manager.start()
if v6_enabled:
v6_raw_updater.start()
v6_filter_updater.start()
v6_ipset_mgr.start()
v6_nat_updater.start()
v6_rules_manager.start()
v6_dispatch_chains.start()
v6_ep_manager.start()
v6_fip_manager.start()
iface_watcher.start()
top_level_actors = [
hosts_ipset_v4,
cleanup_mgr,
v4_filter_updater,
v4_nat_updater,
v4_ipset_mgr,
v4_masq_manager,
v4_rules_manager,
v4_dispatch_chains,
v4_ep_manager,
v4_fip_manager,
iface_watcher,
etcd_api,
]
if v6_enabled:
top_level_actors += [
v6_raw_updater,
v6_filter_updater,
v6_nat_updater,
v6_ipset_mgr,
v6_rules_manager,
v6_dispatch_chains,
v6_ep_manager,
v6_fip_manager,
]
monitored_items += [actor.greenlet for actor in top_level_actors]
# Try to ensure that the nf_conntrack_netlink kernel module is present.
# This works around an issue[1] where the first call to the "conntrack"
# command fails while waiting for the module to load.
# [1] https://github.com/projectcalico/calico/issues/986
load_nf_conntrack()
# Install the global rules before we start polling for updates.
_log.info("Installing global rules.")
install_global_rules(config, v4_filter_updater, v4_nat_updater,
ip_version=4)
if v6_enabled:
install_global_rules(config, v6_filter_updater, v6_nat_updater,
ip_version=6, raw_updater=v6_raw_updater)
# Start polling for updates. These kicks make the actors poll
# indefinitely.
_log.info("Starting polling for interface and etcd updates.")
f = iface_watcher.watch_interfaces(async=True)
monitored_items.append(f)
etcd_api.start_watch(update_splitter, async=True)
# Register a SIG_USR handler to trigger a diags dump.
def dump_top_level_actors(log):
for a in top_level_actors:
# The output will include queue length and the like.
log.info("%s", a)
futils.register_diags("Top-level actors", dump_top_level_actors)
futils.register_process_statistics()
try:
gevent.signal(signal.SIGUSR1, functools.partial(futils.dump_diags))
except AttributeError:
# It doesn't matter too much if we fail to do this.
_log.warning("Unable to install diag dump handler")
pass
# Wait for something to fail.
_log.info("All top-level actors started, waiting on failures...")
stopped_greenlets_iter = gevent.iwait(monitored_items)
stopped_greenlet = next(stopped_greenlets_iter)
try:
stopped_greenlet.get()
except Exception:
_log.exception("Greenlet failed: %s", stopped_greenlet)
raise
else:
_log.error("Greenlet %s unexpectedly returned.", stopped_greenlet)
raise AssertionError("Greenlet unexpectedly returned")
except:
_log.exception("Exception killing main greenlet")
raise
def _main_greenlet(config):
"""
The root of our tree of greenlets. Responsible for restarting
its children if desired.
"""
try:
_log.info("Connecting to etcd to get our configuration.")
hosts_ipset_v4 = IpsetActor(HOSTS_IPSET_V4)
etcd_api = EtcdAPI(config, hosts_ipset_v4)
etcd_api.start()
# Ask the EtcdAPI to fill in the global config object before we
# proceed. We don't yet support config updates.
config_loaded = etcd_api.load_config(async=False)
config_loaded.wait()
# Ensure the Kernel's global options are correctly configured for
# Calico.
devices.configure_global_kernel_config()
_log.info("Main greenlet: Configuration loaded, starting remaining " "actors...")
monitored_items = []
if config.PROM_METRICS_ENABLED:
httpd = HTTPServer(("0.0.0.0", config.PROM_METRICS_PORT), MetricsHandler)
stats_server = gevent.Greenlet(httpd.serve_forever)
stats_server.start()
monitored_items.append(stats_server)
v4_filter_updater = IptablesUpdater("filter", ip_version=4, config=config)
v4_nat_updater = IptablesUpdater("nat", ip_version=4, config=config)
v4_ipset_mgr = IpsetManager(IPV4, config)
v4_masq_manager = MasqueradeManager(IPV4, v4_nat_updater)
v4_rules_manager = RulesManager(config, 4, v4_filter_updater, v4_ipset_mgr)
v4_dispatch_chains = DispatchChains(config, 4, v4_filter_updater)
v4_fip_manager = FloatingIPManager(config, 4, v4_nat_updater)
v4_ep_manager = EndpointManager(
config,
IPV4,
v4_filter_updater,
v4_dispatch_chains,
v4_rules_manager,
v4_fip_manager,
etcd_api.status_reporter,
)
cleanup_updaters = [v4_filter_updater, v4_nat_updater]
cleanup_ip_mgrs = [v4_ipset_mgr]
update_splitter_args = [v4_ipset_mgr, v4_rules_manager, v4_ep_manager, v4_masq_manager, v4_nat_updater]
v6_enabled = os.path.exists("/proc/sys/net/ipv6")
if v6_enabled:
v6_raw_updater = IptablesUpdater("raw", ip_version=6, config=config)
v6_filter_updater = IptablesUpdater("filter", ip_version=6, config=config)
v6_nat_updater = IptablesUpdater("nat", ip_version=6, config=config)
v6_ipset_mgr = IpsetManager(IPV6, config)
v6_rules_manager = RulesManager(config, 6, v6_filter_updater, v6_ipset_mgr)
v6_dispatch_chains = DispatchChains(config, 6, v6_filter_updater)
v6_fip_manager = FloatingIPManager(config, 6, v6_nat_updater)
v6_ep_manager = EndpointManager(
config,
IPV6,
v6_filter_updater,
v6_dispatch_chains,
v6_rules_manager,
v6_fip_manager,
etcd_api.status_reporter,
)
cleanup_updaters.append(v6_filter_updater)
cleanup_ip_mgrs.append(v6_ipset_mgr)
update_splitter_args += [v6_ipset_mgr, v6_rules_manager, v6_ep_manager, v6_raw_updater, v6_nat_updater]
cleanup_mgr = CleanupManager(config, cleanup_updaters, cleanup_ip_mgrs)
update_splitter_args.append(cleanup_mgr)
update_splitter = UpdateSplitter(update_splitter_args)
iface_watcher = InterfaceWatcher(update_splitter)
_log.info("Starting actors.")
hosts_ipset_v4.start()
cleanup_mgr.start()
v4_filter_updater.start()
v4_nat_updater.start()
v4_ipset_mgr.start()
v4_masq_manager.start()
v4_rules_manager.start()
v4_dispatch_chains.start()
v4_ep_manager.start()
v4_fip_manager.start()
if v6_enabled:
v6_raw_updater.start()
v6_filter_updater.start()
v6_ipset_mgr.start()
v6_nat_updater.start()
v6_rules_manager.start()
v6_dispatch_chains.start()
v6_ep_manager.start()
v6_fip_manager.start()
iface_watcher.start()
top_level_actors = [
hosts_ipset_v4,
cleanup_mgr,
v4_filter_updater,
v4_nat_updater,
v4_ipset_mgr,
v4_masq_manager,
v4_rules_manager,
v4_dispatch_chains,
v4_ep_manager,
v4_fip_manager,
iface_watcher,
etcd_api,
]
if v6_enabled:
top_level_actors += [
v6_raw_updater,
v6_filter_updater,
v6_nat_updater,
v6_ipset_mgr,
v6_rules_manager,
v6_dispatch_chains,
v6_ep_manager,
v6_fip_manager,
]
monitored_items += [actor.greenlet for actor in top_level_actors]
# Try to ensure that the nf_conntrack_netlink kernel module is present.
# This works around an issue[1] where the first call to the "conntrack"
# command fails while waiting for the module to load.
# [1] https://github.com/projectcalico/calico/issues/986
load_nf_conntrack()
# Install the global rules before we start polling for updates.
_log.info("Installing global rules.")
install_global_rules(config, v4_filter_updater, v4_nat_updater, ip_version=4)
if v6_enabled:
install_global_rules(config, v6_filter_updater, v6_nat_updater, ip_version=6, raw_updater=v6_raw_updater)
# Start polling for updates. These kicks make the actors poll
# indefinitely.
_log.info("Starting polling for interface and etcd updates.")
f = iface_watcher.watch_interfaces(async=True)
monitored_items.append(f)
etcd_api.start_watch(update_splitter, async=True)
# Register a SIG_USR handler to trigger a diags dump.
def dump_top_level_actors(log):
for a in top_level_actors:
# The output will include queue length and the like.
log.info("%s", a)
futils.register_diags("Top-level actors", dump_top_level_actors)
futils.register_process_statistics()
try:
gevent.signal(signal.SIGUSR1, functools.partial(futils.dump_diags))
except AttributeError:
# It doesn't matter too much if we fail to do this.
_log.warning("Unable to install diag dump handler")
pass
# Wait for something to fail.
_log.info("All top-level actors started, waiting on failures...")
stopped_greenlets_iter = gevent.iwait(monitored_items)
stopped_greenlet = next(stopped_greenlets_iter)
try:
stopped_greenlet.get()
except Exception:
_log.exception("Greenlet failed: %s", stopped_greenlet)
raise
else:
_log.error("Greenlet %s unexpectedly returned.", stopped_greenlet)
raise AssertionError("Greenlet unexpectedly returned")
except:
_log.exception("Exception killing main greenlet")
raise
def _main_greenlet(config):
"""
The root of our tree of greenlets. Responsible for restarting
its children if desired.
"""
try:
_log.info("Connecting to etcd to get our configuration.")
hosts_ipset_v4 = IpsetActor(HOSTS_IPSET_V4)
etcd_api = EtcdAPI(config, hosts_ipset_v4)
etcd_api.start()
# Ask the EtcdAPI to fill in the global config object before we
# proceed. We don't yet support config updates.
config_loaded = etcd_api.load_config(async=False)
config_loaded.wait()
# Ensure the Kernel's global options are correctly configured for
# Calico.
devices.configure_global_kernel_config()
_log.info("Main greenlet: Configuration loaded, starting remaining "
"actors...")
v4_filter_updater = IptablesUpdater("filter",
ip_version=4,
config=config)
v4_nat_updater = IptablesUpdater("nat", ip_version=4, config=config)
v4_ipset_mgr = IpsetManager(IPV4, config)
v4_masq_manager = MasqueradeManager(IPV4, v4_nat_updater)
v4_rules_manager = RulesManager(config, 4, v4_filter_updater,
v4_ipset_mgr)
v4_dispatch_chains = DispatchChains(config, 4, v4_filter_updater)
v4_fip_manager = FloatingIPManager(config, 4, v4_nat_updater)
v4_ep_manager = EndpointManager(config, IPV4, v4_filter_updater,
v4_dispatch_chains, v4_rules_manager,
v4_fip_manager,
etcd_api.status_reporter)
v6_raw_updater = IptablesUpdater("raw", ip_version=6, config=config)
v6_filter_updater = IptablesUpdater("filter",
ip_version=6,
config=config)
v6_nat_updater = IptablesUpdater("nat", ip_version=6, config=config)
v6_ipset_mgr = IpsetManager(IPV6, config)
v6_rules_manager = RulesManager(config, 6, v6_filter_updater,
v6_ipset_mgr)
v6_dispatch_chains = DispatchChains(config, 6, v6_filter_updater)
v6_fip_manager = FloatingIPManager(config, 6, v6_nat_updater)
v6_ep_manager = EndpointManager(config, IPV6, v6_filter_updater,
v6_dispatch_chains, v6_rules_manager,
v6_fip_manager,
etcd_api.status_reporter)
cleanup_mgr = CleanupManager(
config, [v4_filter_updater, v6_filter_updater, v4_nat_updater],
[v4_ipset_mgr, v6_ipset_mgr])
update_splitter = UpdateSplitter([
v4_ipset_mgr,
v6_ipset_mgr,
v4_rules_manager,
v6_rules_manager,
v4_ep_manager,
v6_ep_manager,
v6_raw_updater,
v4_masq_manager,
v4_nat_updater,
v6_nat_updater,
cleanup_mgr,
])
iface_watcher = InterfaceWatcher(update_splitter)
_log.info("Starting actors.")
hosts_ipset_v4.start()
cleanup_mgr.start()
v4_filter_updater.start()
v4_nat_updater.start()
v4_ipset_mgr.start()
v4_masq_manager.start()
v4_rules_manager.start()
v4_dispatch_chains.start()
v4_ep_manager.start()
v4_fip_manager.start()
v6_raw_updater.start()
v6_filter_updater.start()
v6_nat_updater.start()
v6_ipset_mgr.start()
v6_rules_manager.start()
v6_dispatch_chains.start()
v6_ep_manager.start()
v6_fip_manager.start()
iface_watcher.start()
top_level_actors = [
hosts_ipset_v4,
cleanup_mgr,
v4_filter_updater,
v4_nat_updater,
v4_ipset_mgr,
v4_masq_manager,
v4_rules_manager,
v4_dispatch_chains,
v4_ep_manager,
v4_fip_manager,
v6_raw_updater,
v6_filter_updater,
v6_nat_updater,
v6_ipset_mgr,
v6_rules_manager,
v6_dispatch_chains,
v6_ep_manager,
v6_fip_manager,
iface_watcher,
etcd_api,
]
monitored_items = [actor.greenlet for actor in top_level_actors]
# Install the global rules before we start polling for updates.
_log.info("Installing global rules.")
install_global_rules(config, v4_filter_updater, v6_filter_updater,
v4_nat_updater, v6_nat_updater, v6_raw_updater)
# Start polling for updates. These kicks make the actors poll
# indefinitely.
_log.info("Starting polling for interface and etcd updates.")
f = iface_watcher.watch_interfaces(async=True)
monitored_items.append(f)
etcd_api.start_watch(update_splitter, async=True)
# Register a SIG_USR handler to trigger a diags dump.
def dump_top_level_actors(log):
for a in top_level_actors:
# The output will include queue length and the like.
log.info("%s", a)
futils.register_diags("Top-level actors", dump_top_level_actors)
futils.register_process_statistics()
try:
gevent.signal(signal.SIGUSR1, functools.partial(futils.dump_diags))
except AttributeError:
# It doesn't matter too much if we fail to do this.
_log.warning("Unable to install diag dump handler")
pass
# Wait for something to fail.
_log.info("All top-level actors started, waiting on failures...")
stopped_greenlets_iter = gevent.iwait(monitored_items)
stopped_greenlet = next(stopped_greenlets_iter)
try:
stopped_greenlet.get()
except Exception:
_log.exception("Greenlet failed: %s", stopped_greenlet)
raise
else:
_log.error("Greenlet %s unexpectedly returned.", stopped_greenlet)
raise AssertionError("Greenlet unexpectedly returned")
except:
_log.exception("Exception killing main greenlet")
raise
def _main_greenlet():
"""
The root of our tree of greenlets. Responsible for restarting
its children if desired.
"""
try:
_log.info("Connecting to etcd to get our configuration.")
hosts_ipset_v4 = IpsetActor(HOSTS_IPSET_V4)
monitored_items = []
# The parent process sends us communication pipes as FD 3 and 4. Open
# those as files. Wrap the resulting files in a FileObject to make
# them cooperate with gevent.
pipe_from_parent = FileObject(os.fdopen(3, 'rb', -1), 'rb')
pipe_to_parent = FileObject(os.fdopen(4, 'wb', -1), 'wb')
config = Config()
datastore = DatastoreAPI(config, pipe_from_parent, pipe_to_parent,
hosts_ipset_v4)
datastore.start()
monitored_items.append(datastore.greenlet)
# Ask the DatastoreAPI to fill in the global config object before we
# proceed. We don't yet support config updates.
config_loaded = datastore.load_config(async=False)
config_loaded.wait()
# Ensure the Kernel's global options are correctly configured for
# Calico.
devices.configure_global_kernel_config(config)
# Check the commands we require are present.
futils.check_command_deps()
_log.info("Main greenlet: Configuration loaded, starting remaining "
"actors...")
if config.PROM_METRICS_ENABLED:
httpd = HTTPServer(("0.0.0.0", config.PROM_METRICS_DRIVER_PORT),
MetricsHandler)
stats_server = gevent.Greenlet(httpd.serve_forever)
stats_server.start()
monitored_items.append(stats_server)
v4_filter_updater = IptablesUpdater("filter",
ip_version=4,
config=config)
v4_nat_updater = IptablesUpdater("nat", ip_version=4, config=config)
v4_ipset_mgr = IpsetManager(IPV4, config)
v4_masq_manager = MasqueradeManager(IPV4, v4_nat_updater)
v4_rules_manager = RulesManager(config, 4, v4_filter_updater,
v4_ipset_mgr)
v4_ep_dispatch_chains = WorkloadDispatchChains(config, 4,
v4_filter_updater)
v4_if_dispatch_chains = HostEndpointDispatchChains(
config, 4, v4_filter_updater)
v4_fip_manager = FloatingIPManager(config, 4, v4_nat_updater)
v4_ep_manager = EndpointManager(config, IPV4, v4_filter_updater,
v4_ep_dispatch_chains,
v4_if_dispatch_chains,
v4_rules_manager, v4_fip_manager,
datastore.write_api)
cleanup_updaters = [v4_filter_updater, v4_nat_updater]
cleanup_ip_mgrs = [v4_ipset_mgr]
managers = [
v4_ipset_mgr, v4_rules_manager, v4_ep_manager, v4_masq_manager,
v4_nat_updater
]
actors_to_start = [
hosts_ipset_v4,
v4_filter_updater,
v4_nat_updater,
v4_ipset_mgr,
v4_masq_manager,
v4_rules_manager,
v4_ep_dispatch_chains,
v4_if_dispatch_chains,
v4_ep_manager,
v4_fip_manager,
]
# Determine if ipv6 is enabled using the config option.
if config.IPV6_SUPPORT == "true":
v6_enabled = True
ipv6_reason = None
elif config.IPV6_SUPPORT == "auto":
v6_enabled, ipv6_reason = futils.detect_ipv6_supported()
else:
v6_enabled = False
ipv6_reason = "Ipv6Support is 'false'"
if v6_enabled:
v6_raw_updater = IptablesUpdater("raw",
ip_version=6,
config=config)
v6_filter_updater = IptablesUpdater("filter",
ip_version=6,
config=config)
v6_nat_updater = IptablesUpdater("nat",
ip_version=6,
config=config)
v6_ipset_mgr = IpsetManager(IPV6, config)
v6_rules_manager = RulesManager(config, 6, v6_filter_updater,
v6_ipset_mgr)
v6_ep_dispatch_chains = WorkloadDispatchChains(
config, 6, v6_filter_updater)
v6_if_dispatch_chains = HostEndpointDispatchChains(
config, 6, v6_filter_updater)
v6_fip_manager = FloatingIPManager(config, 6, v6_nat_updater)
v6_ep_manager = EndpointManager(config, IPV6, v6_filter_updater,
v6_ep_dispatch_chains,
v6_if_dispatch_chains,
v6_rules_manager, v6_fip_manager,
datastore.write_api)
cleanup_updaters.append(v6_filter_updater)
cleanup_ip_mgrs.append(v6_ipset_mgr)
managers += [
v6_ipset_mgr, v6_rules_manager, v6_ep_manager, v6_raw_updater,
v6_nat_updater
]
actors_to_start += [
v6_raw_updater,
v6_filter_updater,
v6_nat_updater,
v6_ipset_mgr,
v6_rules_manager,
v6_ep_dispatch_chains,
v6_if_dispatch_chains,
v6_ep_manager,
v6_fip_manager,
]
else:
# Keep the linter happy.
_log.warn("IPv6 support disabled: %s.", ipv6_reason)
v6_filter_updater = None
v6_nat_updater = None
v6_raw_updater = None
v6_if_dispatch_chains = None
cleanup_mgr = CleanupManager(config, cleanup_updaters, cleanup_ip_mgrs)
managers.append(cleanup_mgr)
update_splitter = UpdateSplitter(managers)
iface_watcher = InterfaceWatcher(update_splitter)
actors_to_start += [
cleanup_mgr,
iface_watcher,
]
_log.info("Starting actors.")
for actor in actors_to_start:
actor.start()
monitored_items += [actor.greenlet for actor in actors_to_start]
# Try to ensure that the nf_conntrack_netlink kernel module is present.
# This works around an issue[1] where the first call to the "conntrack"
# command fails while waiting for the module to load.
# [1] https://github.com/projectcalico/felix/issues/986
load_nf_conntrack()
# Install the global rules before we start polling for updates.
_log.info("Installing global rules.")
# Dispatch chain needs to make its configuration before we insert the
# top-level chains.
v4_if_dispatch_chains.configure_iptables(async=False)
install_global_rules(config,
v4_filter_updater,
v4_nat_updater,
ip_version=4)
if v6_enabled:
# Dispatch chain needs to make its configuration before we insert
# the top-level chains.
v6_if_dispatch_chains.configure_iptables(async=False)
install_global_rules(config,
v6_filter_updater,
v6_nat_updater,
ip_version=6,
raw_updater=v6_raw_updater)
# Start polling for updates. These kicks make the actors poll
# indefinitely.
_log.info("Starting polling for interface and etcd updates.")
f = iface_watcher.watch_interfaces(async=True)
monitored_items.append(f)
datastore.start_watch(update_splitter, async=True)
# Register a SIG_USR handler to trigger a diags dump.
def dump_top_level_actors(log):
for a in actors_to_start:
# The output will include queue length and the like.
log.info("%s", a)
futils.register_diags("Top-level actors", dump_top_level_actors)
futils.register_process_statistics()
try:
gevent.signal(signal.SIGUSR1, functools.partial(futils.dump_diags))
except AttributeError:
# It doesn't matter too much if we fail to do this.
_log.warning("Unable to install diag dump handler")
pass
gevent.signal(signal.SIGTERM, functools.partial(shut_down, datastore))
gevent.signal(signal.SIGINT, functools.partial(shut_down, datastore))
# Wait for something to fail.
_log.info("All top-level actors started, waiting on failures...")
stopped_greenlets_iter = gevent.iwait(monitored_items)
stopped_greenlet = next(stopped_greenlets_iter)
try:
stopped_greenlet.get()
except Exception:
_log.exception("Greenlet failed: %s", stopped_greenlet)
raise
else:
_log.error("Greenlet %s unexpectedly returned.", stopped_greenlet)
raise AssertionError("Greenlet unexpectedly returned")
except:
_log.exception("Exception killing main greenlet")
raise
def get_floating_ip_manager(self, ip_version):
return FloatingIPManager(
config=self.config,
ip_version=ip_version,
iptables_updater=self.iptables_updater
)
def _main_greenlet(config):
"""
The root of our tree of greenlets. Responsible for restarting
its children if desired.
"""
try:
_log.info("Connecting to etcd to get our configuration.")
hosts_ipset_v4 = IpsetActor(HOSTS_IPSET_V4)
etcd_api = EtcdAPI(config, hosts_ipset_v4)
etcd_api.start()
# Ask the EtcdAPI to fill in the global config object before we
# proceed. We don't yet support config updates.
config_loaded = etcd_api.load_config(async=False)
config_loaded.wait()
# Ensure the Kernel's global options are correctly configured for
# Calico.
devices.configure_global_kernel_config()
_log.info("Main greenlet: Configuration loaded, starting remaining "
"actors...")
v4_filter_updater = IptablesUpdater("filter", ip_version=4,
config=config)
v4_nat_updater = IptablesUpdater("nat", ip_version=4, config=config)
v4_ipset_mgr = IpsetManager(IPV4, config)
v4_masq_manager = MasqueradeManager(IPV4, v4_nat_updater)
v4_rules_manager = RulesManager(config,
4,
v4_filter_updater,
v4_ipset_mgr)
v4_dispatch_chains = DispatchChains(config, 4, v4_filter_updater)
v4_fip_manager = FloatingIPManager(config, 4, v4_nat_updater)
v4_ep_manager = EndpointManager(config,
IPV4,
v4_filter_updater,
v4_dispatch_chains,
v4_rules_manager,
v4_fip_manager,
etcd_api.status_reporter)
v6_raw_updater = IptablesUpdater("raw", ip_version=6, config=config)
v6_filter_updater = IptablesUpdater("filter", ip_version=6,
config=config)
v6_nat_updater = IptablesUpdater("nat", ip_version=6, config=config)
v6_ipset_mgr = IpsetManager(IPV6, config)
v6_rules_manager = RulesManager(config,
6,
v6_filter_updater,
v6_ipset_mgr)
v6_dispatch_chains = DispatchChains(config, 6, v6_filter_updater)
v6_fip_manager = FloatingIPManager(config, 6, v6_nat_updater)
v6_ep_manager = EndpointManager(config,
IPV6,
v6_filter_updater,
v6_dispatch_chains,
v6_rules_manager,
v6_fip_manager,
etcd_api.status_reporter)
cleanup_mgr = CleanupManager(
config,
[v4_filter_updater, v6_filter_updater, v4_nat_updater],
[v4_ipset_mgr, v6_ipset_mgr]
)
update_splitter = UpdateSplitter(
[
v4_ipset_mgr, v6_ipset_mgr,
v4_rules_manager, v6_rules_manager,
v4_ep_manager, v6_ep_manager,
v6_raw_updater,
v4_masq_manager,
v4_nat_updater, v6_nat_updater,
cleanup_mgr,
]
)
iface_watcher = InterfaceWatcher(update_splitter)
_log.info("Starting actors.")
hosts_ipset_v4.start()
cleanup_mgr.start()
v4_filter_updater.start()
v4_nat_updater.start()
v4_ipset_mgr.start()
v4_masq_manager.start()
v4_rules_manager.start()
v4_dispatch_chains.start()
v4_ep_manager.start()
v4_fip_manager.start()
v6_raw_updater.start()
v6_filter_updater.start()
v6_nat_updater.start()
v6_ipset_mgr.start()
v6_rules_manager.start()
v6_dispatch_chains.start()
v6_ep_manager.start()
v6_fip_manager.start()
iface_watcher.start()
top_level_actors = [
hosts_ipset_v4,
cleanup_mgr,
v4_filter_updater,
v4_nat_updater,
v4_ipset_mgr,
v4_masq_manager,
v4_rules_manager,
v4_dispatch_chains,
v4_ep_manager,
v4_fip_manager,
v6_raw_updater,
v6_filter_updater,
v6_nat_updater,
v6_ipset_mgr,
v6_rules_manager,
v6_dispatch_chains,
v6_ep_manager,
v6_fip_manager,
iface_watcher,
etcd_api,
]
monitored_items = [actor.greenlet for actor in top_level_actors]
# Install the global rules before we start polling for updates.
_log.info("Installing global rules.")
install_global_rules(config, v4_filter_updater, v6_filter_updater,
v4_nat_updater, v6_nat_updater, v6_raw_updater)
# Start polling for updates. These kicks make the actors poll
# indefinitely.
_log.info("Starting polling for interface and etcd updates.")
f = iface_watcher.watch_interfaces(async=True)
monitored_items.append(f)
etcd_api.start_watch(update_splitter, async=True)
# Register a SIG_USR handler to trigger a diags dump.
def dump_top_level_actors(log):
for a in top_level_actors:
# The output will include queue length and the like.
log.info("%s", a)
futils.register_diags("Top-level actors", dump_top_level_actors)
futils.register_process_statistics()
try:
gevent.signal(signal.SIGUSR1, functools.partial(futils.dump_diags))
except AttributeError:
# It doesn't matter too much if we fail to do this.
_log.warning("Unable to install diag dump handler")
pass
# Wait for something to fail.
_log.info("All top-level actors started, waiting on failures...")
stopped_greenlets_iter = gevent.iwait(monitored_items)
stopped_greenlet = next(stopped_greenlets_iter)
try:
stopped_greenlet.get()
except Exception:
_log.exception("Greenlet failed: %s", stopped_greenlet)
raise
else:
_log.error("Greenlet %s unexpectedly returned.", stopped_greenlet)
raise AssertionError("Greenlet unexpectedly returned")
except:
_log.exception("Exception killing main greenlet")
raise