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/*
* Worldvisions Weaver Software:
* Copyright (C) 1997-2002 Net Integration Technologies, Inc.
*
* WvLogBuffer is a descendant of WvLogRcv that buffers log messages for
* later use. It only keeps up to max_lines log entries for every
* source/debug level, s.t. debug level <= max_level
*/
#include "wvlogbuffer.h"
#include "strutils.h"
#include <time.h>
WvLogBuffer::Msg::Msg(WvLog::LogLevel _level, WvStringParm _source,
WvString _message) : level(_level), source(_source), message(_message)
{
time(×tamp);
}
WvLogBuffer::Msg* WvLogBuffer::MsgCounter::add(WvLogBuffer::Msg* msg, int max)
{
list.append(msg, false);
// Check if we need to purge anything
if (list.count() > (size_t)max)
{
Msg* killme = list.first();
list.unlink_first();
return killme;
}
else
return NULL;
}
WvLogBuffer::WvLogBuffer(int _max_lines, WvLog::LogLevel _max_level) :
WvLogRcv(_max_level), counters(25)
{
max_lines = _max_lines;
}
WvLogBuffer::~WvLogBuffer()
{
end_line();
}
void WvLogBuffer::_mid_line(const char *str, size_t len)
{
current.put(str, len);
}
void WvLogBuffer::handle_msg(Msg *lastmsg)
{
// Stick the msg in the list of all messages
msgs.append(lastmsg, true);
// Check if we already have any messages of this source/level
WvString type(WvString("%s:%s", last_source->app, last_level));
MsgCounter* msgcounter = counters[type];
// If not create a new tracking list for it
if (!msgcounter)
{
msgcounter = new MsgCounter(type);
counters.add(msgcounter, true);
}
// Now that we are sure the type exists, add the message to it
Msg* killme = msgcounter->add(lastmsg, max_lines);
// Delete the extra messages if we need to
if (killme)
msgs.unlink(killme);
}
void WvLogBuffer::_end_line()
{
if (last_level < WvLog::NUM_LOGLEVELS)
{
current.put('\0'); // terminating NULL
Msg *lastmsg = new Msg(last_level, last_source->app,
trim_string((char *)current.get(current.used())));
handle_msg(lastmsg);
}
else
current.zap();
}
void WvLogBuffer::dump(WvStream &s)
{
MsgList::Iter i(messages());
for (i.rewind(); i.next(); )
{
Msg &m = *i;
s.print("%s %s<%s>: %s+\n",
m.timestamp, m.source, loglevels[m.level], m.message);
}
}
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