38 lines
848 B
Go
38 lines
848 B
Go
package log
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import (
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"runtime"
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"strconv"
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)
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// Contexter ensures type is intentionally a log context
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type Contexter interface {
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ContextName() string
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}
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// Caller represents a runtime file:line caller for log context
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type Caller func() string
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// ContextName returns the key for the log context
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func (c Caller) ContextName() string { return "caller" }
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// NewCaller returns a log context for runtime file caller with full path
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func NewCaller(depth int) Caller {
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return func() string {
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_, file, line, _ := runtime.Caller(depth)
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return file + ":" + strconv.Itoa(line)
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}
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}
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// Add adds a contexter interface to a Logger
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func Add(l Logger, cc ...Contexter) Logger {
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for _, c := range cc {
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if caller, ok := c.(Caller); ok {
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l = l.AddContext(c.ContextName(), caller())
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continue
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}
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l = l.AddContext(c.ContextName(), c)
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}
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return l
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}
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