/
manager.go
87 lines (75 loc) · 1.49 KB
/
manager.go
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package easylog
import (
"strings"
"sync"
)
type manager struct {
mu sync.RWMutex
root *Logger
loggerMap map[string]*Logger
}
func (m *manager) getLogger(name string) *Logger {
m.mu.RLock()
if l, ok := m.loggerMap[name]; ok && l != nil && !l.placeholder {
m.mu.RUnlock()
return l
}
m.mu.RUnlock()
m.mu.Lock()
defer m.mu.Unlock()
if l, ok := m.loggerMap[name]; ok && l != nil {
if l.placeholder {
ph := l
l = newLogger()
l.name = name
l.manager = m
m.loggerMap[name] = l
m.fixUpChildren(ph, l)
m.fixUpParents(l)
}
return l
} else {
l := newLogger()
l.name = name
l.manager = m
m.loggerMap[name] = l
m.fixUpParents(l)
return l
}
}
func (m *manager) fixUpParents(l *Logger) {
name := l.name
i := strings.LastIndexByte(name, '.')
var rv *Logger = nil
for {
if i < 0 || rv != nil {
break
}
subStr := name[:i]
if _, ok := m.loggerMap[subStr]; !ok {
placeHolder := newLogger()
placeHolder.placeholder = true
placeHolder.children[l] = struct{}{}
m.loggerMap[subStr] = placeHolder
} else {
if !m.loggerMap[subStr].placeholder {
rv = m.loggerMap[subStr]
} else {
m.loggerMap[subStr].children[l] = struct{}{}
}
}
i = strings.LastIndexByte(subStr, '.')
}
if rv == nil {
rv = m.root
}
l.parent = rv
}
func (m *manager) fixUpChildren(placeholder *Logger, l *Logger) {
for c := range placeholder.children {
if !strings.HasPrefix(c.parent.name, l.name) {
l.parent = c.parent
c.parent = l
}
}
}