See below.
regards,
Anders Widell
On 02/17/2017 06:21 AM, A V Mahesh wrote:
> Hi Anders Widell,
>
> Can you please clarify below :
>
> 1) is this meta sequenceId is rotates after reaching some value ? (
> Max value )
Yes the max value is INT_MAX (2147483647), after which the next sequence
number will start from 1 again.
>
> 2) is this meta sequenceId persistent even after application respawn ?
No, but you can detect application restart using the PID, which is also
included in the log message.
>
> =============================================================================================================================================================
>
>
>
> <143>1 2017-02-17T10:44:21.59772+05:30 PL-1 osafimmloadd 10183 - [meta
> sequenceId="431572"] MDS_SND_RCV : calling cb ptr enc or enc flatin
> mcm_msg_encode_full_or_flat_and_send
> <143>1 2017-02-17T10:44:21.597733+05:30 PL-1 osafimmloadd 10183 -
> [meta sequenceId="431573"] >> mds_get_subtn_res_tbl_by_adest
>
> <143>1 2017-02-17T10:44:21.597771+05:30 PL-1 osafimmloadd 10183 -
> [meta sequenceId="431576"] << mcm_msg_encode_full_or_flat_and_send
> <142>1 2017-02-17T10:44:21.597784+05:30 PL-1 osafimmloadd 10183 -
> [meta sequenceId="431577"] MDTM: User Sending Data lenght=384 From
> svc_id = IMMA_OM(26) to svc_id = IMMND(25)
> <143>1 2017-02-17T10:44:21.597798+05:30 PL-1 osafimmloadd 10183 -
> [meta sequenceId="431578"] MDTM: Sending message with Service
> Seqno=7482, TO Dest_id=<0x0002020f:9253>
>
> <143>1 2017-02-17T10:44:21.597875+05:30 PL-1 osafimmnd 9253 - [meta
> sequenceId="1532911"] >> mds_vdest_tbl_get_role
> <143>1 2017-02-17T10:44:21.597879+05:30 PL-1 osafimmnd 9253 - [meta
> sequenceId="1532912"] << mds_vdest_tbl_get_role
>
> =============================================================================================================================================================
>
>
>
> -AVM
>
>
> On 2/13/2017 8:11 PM, Anders Widell wrote:
>> src/mds/mds_log.cc | 24 ++++++++++++++++--------
>> 1 files changed, 16 insertions(+), 8 deletions(-)
>>
>>
>> Use the meta sequenceId structured element for message sequence
>> numbers instead
>> of the MSGID field, as per RFC-5424.
>>
>> Also use a mutex to protect the UnixSocket instance, since users of
>> this class
>> will be reponsible for thread safety after ticket [#2293].
>>
>> diff --git a/src/mds/mds_log.cc b/src/mds/mds_log.cc
>> --- a/src/mds/mds_log.cc
>> +++ b/src/mds/mds_log.cc
>> @@ -27,7 +27,6 @@
>> #include <sys/time.h>
>> #include <time.h>
>> #include <unistd.h>
>> -#include <atomic>
>> #include <cstdarg>
>> #include <cstdio>
>> #include <cstring>
>> @@ -35,6 +34,7 @@
>> #include "base/buffer.h"
>> #include "base/log_message.h"
>> #include "base/macros.h"
>> +#include "base/mutex.h"
>> #include "base/ncsgl_defs.h"
>> #include "base/osaf_utility.h"
>> #include "base/time.h"
>> @@ -54,12 +54,14 @@ class MdsLog {
>> uint32_t proc_id, const char* socket_name);
>> void LogInternal(base::LogMessage::Severity severity, const char
>> *fmt,
>> va_list ap);
>> + static constexpr const uint32_t kMaxSequenceId =
>> uint32_t{0x7fffffff};
>> static MdsLog* instance_;
>> const base::LogMessage::HostName host_name_;
>> const base::LogMessage::AppName app_name_;
>> const base::LogMessage::ProcId proc_id_;
>> - std::atomic<uint64_t> msg_id_;
>> + uint32_t sequence_id_;
>> base::UnixClientSocket log_socket_;
>> + base::Mutex mutex_;
>> DELETE_COPY_AND_MOVE_OPERATORS(MdsLog);
>> };
>> @@ -72,8 +74,9 @@ MdsLog::MdsLog(const char* host_name, co
>> host_name_{base::LogMessage::HostName{host_name}},
>> app_name_{base::LogMessage::AppName{app_name}},
>> proc_id_{base::LogMessage::ProcId{std::to_string(proc_id)}},
>> - msg_id_{0},
>> - log_socket_{socket_name} {
>> + sequence_id_{1},
>> + log_socket_{socket_name},
>> + mutex_{} {
>> }
>> /*****************************************************
>> @@ -130,16 +133,21 @@ void MdsLog::Log(base::LogMessage::Sever
>> void MdsLog::LogInternal(base::LogMessage::Severity severity,
>> const char *fmt,
>> va_list ap) {
>> - uint64_t id = msg_id_++;
>> + base::Lock lock(mutex_);
>> + uint32_t id = sequence_id_;
>> + sequence_id_ = id < kMaxSequenceId ? id + 1 : 1;
>> base::Buffer<256> buffer;
>> - base::LogMessage::Write(base::LogMessage::Facility::kLocal0,
>> + base::LogMessage::Write(base::LogMessage::Facility::kLocal1,
>> severity,
>> base::ReadRealtimeClock(),
>> host_name_,
>> app_name_,
>> proc_id_,
>> - base::LogMessage::MsgId{std::to_string(id)},
>> - {},
>> + base::LogMessage::MsgId{""},
>> + {{base::LogMessage::SdName{"meta"},
>> + {base::LogMessage::Parameter{
>> + base::LogMessage::SdName{"sequenceId"},
>> + std::to_string(id)}}}},
>> fmt,
>> ap,
>> &buffer);
>
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