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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| package lncfg | ||
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| import "fmt" | ||
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| // UsageError is an error type that signals a problem with the supplied flags. | ||
| type UsageError struct { | ||
| Err error | ||
| } | ||
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| // Error returns the error string. | ||
| // | ||
| // NOTE: This is part of the error interface. | ||
| func (u *UsageError) Error() string { | ||
| return u.Err.Error() | ||
| } | ||
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| // Unwrap returns the underlying error. | ||
| func (u *UsageError) Unwrap() error { | ||
| return u.Err | ||
| } | ||
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| // mkErr creates a new error from a string. | ||
| func mkErr(format string, args ...interface{}) error { | ||
| return fmt.Errorf(format, args...) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| package lncfg | ||
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| import ( | ||
| "net" | ||
| "strconv" | ||
| ) | ||
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| // Pprof holds the configuration options for LND's built-in pprof server. | ||
| // | ||
| //nolint:lll | ||
| type Pprof struct { | ||
| CPUProfile string `long:"cpuprofile" description:"Write CPU profile to the specified file"` | ||
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| Profile string `long:"profile" description:"Enable HTTP profiling on either a port or host:port"` | ||
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| BlockingProfile int `long:"blockingprofile" description:"Used to enable a blocking profile to be served on the profiling port. This takes a value from 0 to 1, with 1 including every blocking event, and 0 including no events."` | ||
| MutexProfile int `long:"mutexprofile" description:"Used to Enable a mutex profile to be served on the profiling port. This takes a value from 0 to 1, with 1 including every mutex event, and 0 including no events."` | ||
| } | ||
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| // Validate checks the values configured for the profiler. | ||
| func (p *Pprof) Validate() error { | ||
| if p.BlockingProfile > 0 { | ||
| log.Warn("Blocking profile enabled only useful for " + | ||
| "debugging because of significant performance impact") | ||
| } | ||
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| if p.MutexProfile > 0 { | ||
| log.Warn("Mutex profile enabled only useful for " + | ||
| "debugging because of significant performance impact") | ||
| } | ||
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| if p.CPUProfile != "" { | ||
| log.Warn("CPU profile enabled only useful for " + | ||
| "debugging because of significant performance impact") | ||
| } | ||
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| if p.Profile != "" { | ||
| str := "%v: The profile port must be between 1024 and 65535" | ||
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| // Try to parse Profile as a host:port. | ||
| _, hostPort, err := net.SplitHostPort(p.Profile) | ||
| if err == nil { | ||
| // Determine if the port is valid. | ||
| profilePort, err := strconv.Atoi(hostPort) | ||
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| if err != nil || profilePort < 1024 || | ||
| profilePort > 65535 { | ||
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| return &UsageError{Err: mkErr(str, hostPort)} | ||
| } | ||
| } else { | ||
| // Try to parse Profile as a port. | ||
| profilePort, err := strconv.Atoi(p.Profile) | ||
| if err != nil || profilePort < 1024 || | ||
| profilePort > 65535 { | ||
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| return &UsageError{Err: mkErr(str, p.Profile)} | ||
| } | ||
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| // Since the user just set a port, we will serve | ||
| // debugging information over localhost. | ||
| p.Profile = net.JoinHostPort("127.0.0.1", p.Profile) | ||
| } | ||
| } | ||
|
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| return nil | ||
| } |
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