Core/Logging: Add Asyncronous logging with Loggers ("What to log") and Appenders ("Where to log") system. Will allow to select to full log some parts of core while others are not even logged.

- Logging System is asyncronous to improve performance.
- Each msg and Logger has a Log Type and Log Level assigned. Each msg is assigned the Logger of same Log Type or "root" Logger is selected if there is no Logger configured for the given Log Type
- Loggers have a list of Appenders to send the msg to. The Msg in the Logger is not sent to Appenders if the msg LogLevel is lower than Logger LogLevel.
- There are three (at the moment) types of Appenders: Console, File or DB (this is WIP, not working ATM). Msg is not written to the resource if msg LogLevel is lower than Appender LogLevel.
- Appender and Console Log levels can be changed while server is active with command '.set loglevel (a/l) name level'

Explanation of use with Sample config:

Appender.Console.Type=1       (1 = Console)
Appender.Console.Level=2      (2 = Debug)

Appender.Server.Type=2        (2 = File)
Appender.Server.Level=3       (3 = Info)
Appender.Server.File=Server.log

Appender.SQL.Type=2           (2 = File)
Appender.SQL.Level=1          (1 = Trace)
Appender.SQL.File=sql.log

Appenders=Console Server      (NOTE: SQL has not been included here... that will make core ignore the config for "SQL" as it's not in this list)

Logger.root.Type=0            (0 = Default - if it's not created by config, server will create it with LogLevel = DISABLED)
Logger.root.Level=5           (5 = Error)
Logger.root.Appenders=Console

Logger.SQL.Type=26            (26 = SQL)
Logger.SQL.Level=3            (2 = Debug)
Logger.SQL.Appenders=Console Server SQL

Logger.SomeRandomName.Type=24 (24 = Guild)
Logger.SomeRandomName.Level=5 (5 = Error)
Loggers=root SQL SomeRandomName

* At loading Appender SQL will be ignored, as it's not present on "Appenders"

* sLog->outDebug(LOG_FILTER_GUILD, "Some log msg related to Guilds")
  - Msg is sent to Logger of Type LOG_FILTER_GUILD (24). Logger with name SomeRandomName is found but it's LogLevel = 5 and Msg LogLevel=2... Msg is not logged

* sLog->outError(LOG_FILTER_GUILD, "Some error log msg related to Guilds")
  - Msg is sent to Logger of Type LOG_FILTER_GUILD (24). Logger with name SomeRandomeName is found with proper LogLevel but Logger does not have any Appenders assigned to that logger... Msg is not logged

* sLog->outDebug(LOG_FILTER_SQL, "Some msg related to SQLs")
  - Msg is sent to Logger SQL (matches type), as it matches LogLevel the msg is sent to Appenders Console, Server and SQL
    - Appender Console has lower Log Level: Msg is logged to Console
    - Appender Server has higher Log Level: Msg is not logged to file
    - Appender SQL has lower Log Level: Msg is logged to file sql.log

* sLog->outDebug(LOG_FILTER_BATTLEGROUND, "Some msg related to Battelgrounds")
  - Msg is sent to Logger root (Type 0) as no Logger was found with Type LOG_FILTER_BATTLEGROUND (13). As Logger has higher LogLevel msg is not sent to any appender

* sLog->outError(LOG_FILTER_BATTLEGROUND, "Some error msg related to Battelgrounds")
  - Msg is sent to Logger root (Type 0) as no Logger was found with Type LOG_FILTER_BATTLEGROUND (13). Msg has lower LogLevel and is sent to Appender Console
    - Appender Console has lower LogLevel: Msg is logged to Console

1 files changed, 23 insertions, 23 deletions

diff --git a/src/server/scripts/Examples/example_spell.cpp b/src/server/scripts/Examples/example_spell.cpp
index 737d1eec8f8..cc27392919f 100644
--- a/src/server/scripts/Examples/example_spell.cpp
+++ b/src/server/scripts/Examples/example_spell.cpp
@@ -81,19 +81,19 @@ class spell_ex_5581 : public SpellScriptLoader
             {
                 // this hook is executed before anything about casting the spell is done
                 // after this hook is executed all the machinery starts
-                sLog->outString("Caster just finished preparing the spell (cast bar has expired)");
+                sLog->outInfo(LOG_FILTER_GENERAL, "Caster just finished preparing the spell (cast bar has expired)");
             }
 
             void HandleOnCast()
             {
                 // cast is validated and spell targets are selected at this moment
                 // this is a last place when the spell can be safely interrupted
-                sLog->outString("Spell is about to do take reagents, power, launch missile, do visuals and instant spell effects");
+                sLog->outInfo(LOG_FILTER_GENERAL, "Spell is about to do take reagents, power, launch missile, do visuals and instant spell effects");
             }
 
             void HandleAfterCast()
             {
-                sLog->outString("All immediate Actions for the spell are finished now");
+                sLog->outInfo(LOG_FILTER_GENERAL, "All immediate Actions for the spell are finished now");
                 // this is a safe for triggering additional effects for a spell without interfering
                 // with visuals or with other effects of the spell
                 //GetCaster()->CastSpell(target, SPELL_TRIGGERED, true);
@@ -111,7 +111,7 @@ class spell_ex_5581 : public SpellScriptLoader
 
             void HandleDummyLaunch(SpellEffIndex /*effIndex*/)
             {
-                sLog->outString("Spell %u with SPELL_EFFECT_DUMMY is just launched!", GetSpellInfo()->Id);
+                sLog->outInfo(LOG_FILTER_GENERAL, "Spell %u with SPELL_EFFECT_DUMMY is just launched!", GetSpellInfo()->Id);
             }
 
             void HandleDummyLaunchTarget(SpellEffIndex /*effIndex*/)
@@ -120,17 +120,17 @@ class spell_ex_5581 : public SpellScriptLoader
                 if (Unit* unitTarget = GetHitUnit())
                     targetGUID = unitTarget->GetGUID();
                 // we're handling SPELL_EFFECT_DUMMY in effIndex 0 here
-                sLog->outString("Spell %u with SPELL_EFFECT_DUMMY is just launched at it's target: " UI64FMTD "!", GetSpellInfo()->Id, targetGUID);
+                sLog->outInfo(LOG_FILTER_GENERAL, "Spell %u with SPELL_EFFECT_DUMMY is just launched at it's target: " UI64FMTD "!", GetSpellInfo()->Id, targetGUID);
             }
 
             void HandleDummyHit(SpellEffIndex /*effIndex*/)
             {
-                sLog->outString("Spell %u with SPELL_EFFECT_DUMMY has hit!", GetSpellInfo()->Id);
+                sLog->outInfo(LOG_FILTER_GENERAL, "Spell %u with SPELL_EFFECT_DUMMY has hit!", GetSpellInfo()->Id);
             }
 
             void HandleDummyHitTarget(SpellEffIndex /*effIndex*/)
             {
-                sLog->outString("SPELL_EFFECT_DUMMY is hits it's target!");
+                sLog->outInfo(LOG_FILTER_GENERAL, "SPELL_EFFECT_DUMMY is hits it's target!");
                 // make caster cast a spell on a unit target of effect
                 if (Unit* target = GetHitUnit())
                     GetCaster()->CastSpell(target, SPELL_TRIGGERED, true);
@@ -138,23 +138,23 @@ class spell_ex_5581 : public SpellScriptLoader
 
             void HandleBeforeHit()
             {
-                sLog->outString("Spell is about to hit target!");
+                sLog->outInfo(LOG_FILTER_GENERAL, "Spell is about to hit target!");
             }
 
             void HandleOnHit()
             {
-                sLog->outString("Spell just hit target!");
+                sLog->outInfo(LOG_FILTER_GENERAL, "Spell just hit target!");
             }
 
             void HandleAfterHit()
             {
-                sLog->outString("Spell just finished hitting target!");
+                sLog->outInfo(LOG_FILTER_GENERAL, "Spell just finished hitting target!");
             }
 
             void FilterTargets(std::list<Unit*>& /*targetList*/)
             {
                 // usually you want this call for Area Target spells
-                sLog->outString("Spell is about to add targets from targetList to final targets!");
+                sLog->outInfo(LOG_FILTER_GENERAL, "Spell is about to add targets from targetList to final targets!");
             }
 
             // register functions used in spell script - names of these functions do not matter
@@ -229,20 +229,20 @@ class spell_ex_66244 : public SpellScriptLoader
 
             void HandleOnEffectApply(AuraEffect const* /*aurEff*/, AuraEffectHandleModes /*mode*/)
             {
-                sLog->outString("Aura Effect is about to be applied on target!");
+                sLog->outInfo(LOG_FILTER_GENERAL, "Aura Effect is about to be applied on target!");
                 // this hook allows you to prevent execution of AuraEffect handler, or to replace it with your own handler
                 //PreventDefaultAction();
             }
             void HandleOnEffectRemove(AuraEffect const* /*aurEff*/, AuraEffectHandleModes /*mode*/)
             {
-                sLog->outString("Aura Effect is about to be removed from target!");
+                sLog->outInfo(LOG_FILTER_GENERAL, "Aura Effect is about to be removed from target!");
                 // this hook allows you to prevent execution of AuraEffect handler, or to replace it with your own handler
                 //PreventDefaultAction();
             }
 
             void HandleAfterEffectApply(AuraEffect const* /*aurEff*/, AuraEffectHandleModes /*mode*/)
             {
-                sLog->outString("Aura Effect has just been applied on target!");
+                sLog->outInfo(LOG_FILTER_GENERAL, "Aura Effect has just been applied on target!");
                 Unit* target = GetTarget();
                 // cast spell on target on aura apply
                 target->CastSpell(target, SPELL_TRIGGERED, true);
@@ -250,7 +250,7 @@ class spell_ex_66244 : public SpellScriptLoader
 
             void HandleAfterEffectRemove(AuraEffect const* /*aurEff*/, AuraEffectHandleModes /*mode*/)
             {
-                sLog->outString("Aura Effect has just been just removed from target!");
+                sLog->outInfo(LOG_FILTER_GENERAL, "Aura Effect has just been just removed from target!");
                 Unit* target = GetTarget();
                 Unit* caster = GetCaster();
                 // caster may be not avalible (logged out for example)
@@ -262,7 +262,7 @@ class spell_ex_66244 : public SpellScriptLoader
 
             void HandleEffectPeriodic(AuraEffect const* /*aurEff*/)
             {
-                sLog->outString("Perioidic Aura Effect is does a tick on target!");
+                sLog->outInfo(LOG_FILTER_GENERAL, "Perioidic Aura Effect is does a tick on target!");
                 Unit* target = GetTarget();
                 // aura targets damage self on tick
                 target->DealDamage(target, 100);
@@ -270,14 +270,14 @@ class spell_ex_66244 : public SpellScriptLoader
 
             void HandleEffectPeriodicUpdate(AuraEffect* aurEff)
             {
-                sLog->outString("Perioidic Aura Effect is now updated!");
+                sLog->outInfo(LOG_FILTER_GENERAL, "Perioidic Aura Effect is now updated!");
                 // we're doubling aura amount every tick
                 aurEff->ChangeAmount(aurEff->GetAmount() * 2);
             }
 
             void HandleEffectCalcAmount(AuraEffect const* /*aurEff*/, int32& amount, bool& canBeRecalculated)
             {
-                sLog->outString("Amount of Aura Effect is being calculated now!");
+                sLog->outInfo(LOG_FILTER_GENERAL, "Amount of Aura Effect is being calculated now!");
                 // we're setting amount to 100
                 amount = 100;
                 // amount will be never recalculated due to applying passive aura
@@ -286,7 +286,7 @@ class spell_ex_66244 : public SpellScriptLoader
 
             void HandleEffectCalcPeriodic(AuraEffect const* /*aurEff*/, bool& isPeriodic, int32& amplitude)
             {
-                sLog->outString("Periodic data of Aura Effect is being calculated now!");
+                sLog->outInfo(LOG_FILTER_GENERAL, "Periodic data of Aura Effect is being calculated now!");
                 // we're setting aura to be periodic and tick every 10 seconds
                 isPeriodic = true;
                 amplitude = 2 * IN_MILLISECONDS;
@@ -294,7 +294,7 @@ class spell_ex_66244 : public SpellScriptLoader
 
             void HandleEffectCalcSpellMod(AuraEffect const* /*aurEff*/, SpellModifier*& spellMod)
             {
-                sLog->outString("SpellMod data of Aura Effect is being calculated now!");
+                sLog->outInfo(LOG_FILTER_GENERAL, "SpellMod data of Aura Effect is being calculated now!");
                 // we don't want spellmod for example
                 if (spellMod)
                 {
@@ -367,14 +367,14 @@ class spell_ex_absorb_aura : public SpellScriptLoader
 
             void HandleOnEffectAbsorb(AuraEffect* /*aurEff*/, DamageInfo & dmgInfo, uint32 & absorbAmount)
             {
-                sLog->outString("Our aura is now absorbing damage done to us!");
+                sLog->outInfo(LOG_FILTER_GENERAL, "Our aura is now absorbing damage done to us!");
                 // absorb whole damage done to us
                 absorbAmount = dmgInfo.GetDamage();
             }
 
             void HandleAfterEffectAbsorb(AuraEffect* /*aurEff*/, DamageInfo & /*dmgInfo*/, uint32 & absorbAmount)
             {
-                sLog->outString("Our aura has absorbed %u damage!", absorbAmount);
+                sLog->outInfo(LOG_FILTER_GENERAL, "Our aura has absorbed %u damage!", absorbAmount);
             }
 
             // function registering
@@ -403,7 +403,7 @@ class spell_ex_463 : public SpellScriptLoader
 
             bool CheckAreaTarget(Unit* target)
             {
-                sLog->outString("Area aura checks if unit is a valid target for it!");
+                sLog->outInfo(LOG_FILTER_GENERAL, "Area aura checks if unit is a valid target for it!");
                 // in our script we allow only players to be affected
                 return target->GetTypeId() == TYPEID_PLAYER;
             }