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FOGL-6891: Handle storage service restart #893

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AmandeepArora
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Storage service restart is handled in south service, north service & notification service. But this hasn't been tested a lot. Also lots of debug logs are still present in this current code.

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Unit tests are failing.

Please remove code that is not really needed.

There is lots of log output at the info level that looks at best to be debug and much that looks like it is not really needed. Merging this will cause a huge increase in logging output at info level that is meant to be a level to give the user more information, not for the code developer.

The changes are impacting the default log levels of various areas of the code and these should be reverted.

The code is littered with PRINT_FUNC, this looks like your debugging and should be removed.

The use of ps in the storage client limits the deployment options to having all services in the same machine or container, this should be avoided.

@@ -19,7 +19,7 @@
using namespace std;

// uncomment line below to get uSec level timestamps
// #define ADD_USEC_TS
#define ADD_USEC_TS
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Probably best not to checkin with this uncommented

m_urlbase << hostname << ":" << port;
m_logger->info("StorageClient c'tor 2: this=%p, m_urlbase=%s", this, m_urlbase.str().c_str());

m_logger->info("StorageClient c'tor 2: current thread ID=%u, m=%p", std::this_thread::get_id(), m);
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This is debug rather than info information

storage_service_urlbase.str("");
storage_service_host = "";

/* else
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If it is not needed please remove

@@ -180,6 +258,8 @@ bool StorageClient::readingAppend(const vector<Reading *>& readings)
ss << m_pid << "#" << thread_id << "_" << m_seqnum_map[thread_id].load();
sto_mtx_client_map.unlock();

m_logger->info("ss=%s", ss.str().c_str());
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This really does not look like useful info for the user, should be debug at best but probably should be removed.

do
{
PRINT_FUNC;
system("ps -ef | grep fledge.services.storage | grep -v grep | wc -l > /tmp/storage_service_instance_count");
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This is quite ugly, not very portable and makes the assumption the storage service is on the same machine as the client that is using it. We have been very careful not to add that restriction so that we may distribute services across machines or containers at some point.

I suspect you can find out what you need to by just using calls to the API and looking at error codes. A TCP connection to the API port can tell you if it is running or not.

@@ -135,8 +155,11 @@ def __init__(self, core_management_host=None, core_management_port=None, is_safe

# Initialize class attributes
if not cls._logger:
cls._logger = logger.setup(__name__, level=logging.INFO)
# cls._logger = logger.setup(__name__, level=logging.DEBUG)
# cls._logger = logger.setup(__name__, level=logging.INFO)
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Please reinstate original before merging

@@ -439,6 +479,9 @@ async def _check_schedules(self):
if schedule.exclusive and schedule_execution.task_processes:
continue

# if schedule.type == Schedule.Type.STARTUP and self._scheduler_restart:
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Please remove commented out code if it is not required

@@ -56,7 +57,7 @@
__license__ = "Apache 2.0"
__version__ = "${VERSION}"

_logger = logger.setup(__name__, level=20)
_logger = logger.setup(__name__, level=logging.DEBUG)
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Please reinstate before merging


'''
def start_storage():
with open("/tmp/monitor.log", "w+") as file:
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What is this file used for? It looks like it is for your debugging purposes and should not be part of the final merge.

if not self._acl_handler:
self._acl_handler = ACLManager(connect.get_storage_async())
await self._acl_handler.\
resolve_pending_notification_for_acl_change(service_record._name)

check_count[service_record._id] = 1

# self._logger.debug("step D")
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Please remove this if it is really not required

@AmandeepArora
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This is really POC code only.

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2 participants