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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "trace.h"
#include <vespa/vespalib/data/slime/slime.h>
namespace search::engine {
vespalib::steady_time
SteadyClock::now() const {
return vespalib::steady_clock::now();
}
RelativeTime::RelativeTime(std::unique_ptr<Clock> clock)
: _start(clock->now()),
_clock(std::move(clock))
{}
void
Trace::constructObject() const {
_trace = std::make_unique<vespalib::Slime>();
_root = & _trace->setObject();
}
void
Trace::constructTraces() const {
_traces = & root().setArray("traces");
}
vespalib::slime::Cursor &
LazyTraceInserter::get_entry() {
if (!_entry) {
_entry = &_parent.createCursor(_name);
}
return *_entry;
}
vespalib::slime::Inserter &
LazyTraceInserter::get_thread_inserter()
{
if (!_thread_inserter) {
_thread_inserter = std::make_unique<vespalib::slime::ArrayInserter>(get_entry().setArray("threads"));
}
return *_thread_inserter;
}
LazyTraceInserter::LazyTraceInserter(search::engine::Trace &parent, vespalib::StaticStringView name) noexcept
: _parent(parent), _name(name), _entry(nullptr), _thread_inserter()
{
}
LazyTraceInserter::~LazyTraceInserter() = default;
void
LazyTraceInserter::handle_nested(const search::engine::Trace &nested_trace)
{
if (nested_trace.hasTrace()) {
vespalib::slime::ObjectInserter inserter(get_entry(), "traces");
vespalib::slime::inject(nested_trace.getTraces(), inserter);
}
}
void
LazyTraceInserter::handle_thread(const search::engine::Trace &thread_trace)
{
if (thread_trace.hasTrace()) {
vespalib::slime::inject(thread_trace.getRoot(), get_thread_inserter());
}
}
Trace::Trace(const Trace &parent, ctor_tag)
: _trace(),
_root(nullptr),
_traces(nullptr),
_relativeTime(parent._relativeTime),
_level(parent._level),
_match_profile_depth(parent._match_profile_depth),
_first_phase_profile_depth(parent._first_phase_profile_depth),
_second_phase_profile_depth(parent._second_phase_profile_depth)
{
}
Trace::Trace(const RelativeTime & relativeTime, uint32_t level)
: _trace(),
_root(nullptr),
_traces(nullptr),
_relativeTime(relativeTime),
_level(level),
_match_profile_depth(0),
_first_phase_profile_depth(0),
_second_phase_profile_depth(0)
{
}
void
Trace::start(int level, bool useUTC) {
if (shouldTrace(level) && !hasTrace()) {
if (useUTC) {
root().setString("start_time", vespalib::to_string(vespalib::to_utc(_relativeTime.timeOfDawn())));
} else {
root().setString("start_time", vespalib::to_string(vespalib::system_time(std::chrono::duration_cast<vespalib::system_time::duration>(_relativeTime.timeOfDawn().time_since_epoch()))));
}
}
}
Trace::~Trace() = default;
Trace::Cursor &
Trace::createCursor(vespalib::stringref name) {
Cursor & trace = traces().addObject();
addTimeStamp(trace);
trace.setString("tag", name);
return trace;
}
Trace::Cursor *
Trace::maybeCreateCursor(uint32_t level, vespalib::stringref name) {
return shouldTrace(level) ? & createCursor(name) : nullptr;
}
void
Trace::addEvent(uint32_t level, vespalib::stringref event) {
if (!shouldTrace(level)) { return; }
Cursor & trace = traces().addObject();
addTimeStamp(trace);
trace.setString("event", event);
}
void
Trace::addTimeStamp(Cursor & trace) {
trace.setDouble("timestamp_ms", vespalib::count_ns(_relativeTime.timeSinceDawn())/1000000.0);
}
void Trace::done() {
if (!hasTrace()) { return; }
root().setDouble("duration_ms", vespalib::count_ns(_relativeTime.timeSinceDawn())/1000000.0);
}
vespalib::string
Trace::toString() const {
return hasTrace() ? slime().toString() : "";
}
}
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