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update(userspace): introduce nlohmann json library

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Signed-off-by: Andrea Terzolo <andrea.terzolo@polito.it>
This commit is contained in:
Andrea Terzolo 2022-07-13 13:16:44 +02:00 committed by poiana
parent 1bf5f864bc
commit b57a2d5a5f
1 changed files with 12 additions and 12 deletions
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24
userspace/falco/statsfilewriter.cpp
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@ -16,6 +16,7 @@ limitations under the License.
#include <sys/time.h> #include <sys/time.h>
#include <signal.h> #include <signal.h>
#include <nlohmann/json.hpp>
#include "statsfilewriter.h" #include "statsfilewriter.h"
#include "banned.h" // This raises a compilation error when certain functions are used #include "banned.h" // This raises a compilation error when certain functions are used
@ -100,6 +101,7 @@ void StatsFileWriter::handle()
{ {
scap_stats cstats; scap_stats cstats;
scap_stats delta; scap_stats delta;
nlohmann::json jmsg;
g_save_stats = false; g_save_stats = false;
m_num_stats++; m_num_stats++;
@ -116,21 +118,19 @@ void StatsFileWriter::handle()
delta.n_preemptions = cstats.n_preemptions - m_last_stats.n_preemptions; delta.n_preemptions = cstats.n_preemptions - m_last_stats.n_preemptions;
} }
m_output << "{\"sample\": " << m_num_stats; jmsg["sample"] = m_num_stats;
if(m_extra != "") if(m_extra != "")
{ {
m_output << ", " << m_extra; jmsg["extra"] = m_extra;
} }
m_output << ", \"cur\": {" << jmsg["cur"]["events"] = cstats.n_evts;
"\"events\": " << cstats.n_evts << jmsg["cur"]["drops"] = cstats.n_drops;
", \"drops\": " << cstats.n_drops << jmsg["cur"]["preemptions"] = cstats.n_preemptions;
", \"preemptions\": " << cstats.n_preemptions << jmsg["delta"]["events"] = delta.n_evts;
"}, \"delta\": {" << jmsg["delta"]["drops"] = delta.n_drops;
"\"events\": " << delta.n_evts << jmsg["delta"]["preemptions"] = delta.n_preemptions;
", \"drops\": " << delta.n_drops << jmsg["drop_pct"] = (delta.n_evts == 0 ? 0 : (100.0*delta.n_drops/delta.n_evts));
", \"preemptions\": " << delta.n_preemptions << m_output << jmsg.dump() << endl;
"}, \"drop_pct\": " << (delta.n_evts == 0 ? 0 : (100.0*delta.n_drops/delta.n_evts)) <<
"}," << endl;
m_last_stats = cstats; m_last_stats = cstats;
} }