getCaller retrieves the name of the first non-logrus calling function
()
| 180 | |
| 181 | // getCaller retrieves the name of the first non-logrus calling function |
| 182 | func getCaller() *runtime.Frame { |
| 183 | // cache this package's fully-qualified name |
| 184 | callerInitOnce.Do(func() { |
| 185 | pcs := make([]uintptr, maximumCallerDepth) |
| 186 | _ = runtime.Callers(0, pcs) |
| 187 | |
| 188 | // dynamic get the package name and the minimum caller depth |
| 189 | for i := 0; i < maximumCallerDepth; i++ { |
| 190 | funcName := runtime.FuncForPC(pcs[i]).Name() |
| 191 | if strings.Contains(funcName, "getCaller") { |
| 192 | logrusPackage = getPackageName(funcName) |
| 193 | break |
| 194 | } |
| 195 | } |
| 196 | |
| 197 | minimumCallerDepth = knownLogrusFrames |
| 198 | }) |
| 199 | |
| 200 | // Restrict the lookback frames to avoid runaway lookups |
| 201 | pcs := make([]uintptr, maximumCallerDepth) |
| 202 | depth := runtime.Callers(minimumCallerDepth, pcs) |
| 203 | frames := runtime.CallersFrames(pcs[:depth]) |
| 204 | |
| 205 | for f, again := frames.Next(); again; f, again = frames.Next() { |
| 206 | pkg := getPackageName(f.Function) |
| 207 | |
| 208 | // If the caller isn't part of this package, we're done |
| 209 | if pkg != logrusPackage { |
| 210 | return &f |
| 211 | } |
| 212 | } |
| 213 | |
| 214 | // if we got here, we failed to find the caller's context |
| 215 | return nil |
| 216 | } |
| 217 | |
| 218 | func (entry Entry) HasCaller() (has bool) { |
| 219 | return entry.Logger != nil && |