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package main
import (
"fmt"
"log"
"os"
)
// LogLevel controls verbosity.
type LogLevel int
const (
LogDebug LogLevel = iota
LogInfo
LogSilent
)
// logLevel is set in main() from the --log-level flag.
var logLevel LogLevel = LogInfo
// setLogLevel parses the flag value.
func setLogLevel(val string) {
switch val {
case "debug":
logLevel = LogDebug
case "info":
logLevel = LogInfo
case "silent":
logLevel = LogSilent
default:
log.Fatalf("invalid --log-level %q (want debug, info, or silent)", val)
}
}
func logDebug(format string, v ...interface{}) {
if logLevel == LogDebug {
log.Printf(format, v...)
}
}
func logInfo(format string, v ...interface{}) {
if logLevel <= LogInfo {
log.Printf(format, v...)
}
}
func logWarn(format string, v ...interface{}) {
log.Printf(format, v...)
}
func logFatal(format string, v ...interface{}) {
log.Fatalf(format, v...)
}
// logHTTPRequest logs an HTTP request in debug mode.
func logHTTPRequest(method, url string, statusCode int, duration float64) {
if logLevel == LogDebug {
log.Printf("HTTP %s %s -> %d (%.2fs)", method, url, statusCode, duration)
}
}
// logHTTPRetry logs a retry attempt in debug mode.
func logHTTPRetry(attempt, maxAttempts int, backoffSecs int, target string) {
if logLevel == LogDebug {
log.Printf("retry %d/%d for %s after %ds backoff", attempt, maxAttempts, target, backoffSecs)
}
}
// logFatalErr is like logFatal but takes a message and error separately.
func logFatalErr(msg string, err error) {
log.Fatalf("%s: %v", msg, err)
}
// Fatal with two args like the original log.Fatal(err, msg) pattern.
func logFatalTwoArgs(err error, msg string) {
fmt.Fprintln(os.Stderr, err)
log.Fatalf("%s", msg)
}
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