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// Copyright 2016 Canonical Ltd.
// Licensed under the LGPLv3, see LICENCE file for details.
package loggo
// Do not change rootName: modules.resolve() will misbehave if it isn't "".
const (
rootString = "<root>"
defaultRootLevel = WARNING
defaultLevel = UNSPECIFIED
)
type module struct {
name string
level Level
parent *module
context *Context
}
// Name returns the module's name.
func (module *module) Name() string {
if module.name == "" {
return rootString
}
return module.name
}
func (m *module) willWrite(level Level) bool {
if level < TRACE || level > CRITICAL {
return false
}
return level >= m.getEffectiveLogLevel()
}
func (module *module) getEffectiveLogLevel() Level {
// Note: the root module is guaranteed to have a
// specified logging level, so acts as a suitable sentinel
// for this loop.
for {
if level := module.level.get(); level != UNSPECIFIED {
return level
}
module = module.parent
}
panic("unreachable")
}
// setLevel sets the severity level of the given module.
// The root module cannot be set to UNSPECIFIED level.
func (module *module) setLevel(level Level) {
// The root module can't be unspecified.
if module.name == "" && level == UNSPECIFIED {
level = WARNING
}
module.level.set(level)
}
func (m *module) write(entry Entry) {
entry.Module = m.name
m.context.write(entry)
}
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