mirror of
https://github.com/hoernschen/dendrite.git
synced 2025-04-01 17:53:39 +00:00
2d202cec07
* vendor: Add bimg image processing library bimg is MIT licensed. It depends on the C library libvips which is LGPL v2.1+ licensed. libvips must be installed separately. * mediaapi: Add YAML config file support * mediaapi: Add thumbnail support * mediaapi: Add missing thumbnail files * travis: Add ppa and install libvips-dev * travis: Another ppa and install libvips-dev attempt * travis: Add sudo: required for sudo apt* usage * mediaapi/thumbnailer: Make comparison code more readable * mediaapi: Simplify logging of thumbnail properties * mediaapi/thumbnailer: Rename metrics to fitness Metrics is used in the context of monitoring with Prometheus so renaming to avoid confusion. * mediaapi/thumbnailer: Use math.Inf() for max aspect and size * mediaapi/thumbnailer: Limit number of parallel generators Fall back to selecting from already-/pre-generated thumbnails or serving the original. * mediaapi/thumbnailer: Split bimg code into separate file * vendor: Add github.com/nfnt/resize pure go image scaler * mediaapi/thumbnailer: Add nfnt/resize thumbnailer * travis: Don't install libvips-dev via ppa * mediaapi: Add notes to README about resizers * mediaapi: Elaborate on scaling libs in README
128 lines
2.5 KiB
Go
128 lines
2.5 KiB
Go
package debug
|
|
|
|
import (
|
|
"fmt"
|
|
"io"
|
|
"math/rand"
|
|
"os"
|
|
"regexp"
|
|
"strconv"
|
|
"strings"
|
|
"sync"
|
|
"time"
|
|
)
|
|
|
|
var (
|
|
writer io.Writer = os.Stderr
|
|
reg *regexp.Regexp
|
|
m sync.Mutex
|
|
enabled = false
|
|
)
|
|
|
|
// Debugger function.
|
|
type DebugFunction func(string, ...interface{})
|
|
|
|
// Terminal colors used at random.
|
|
var colors []string = []string{
|
|
"31",
|
|
"32",
|
|
"33",
|
|
"34",
|
|
"35",
|
|
"36",
|
|
}
|
|
|
|
// Initialize with DEBUG environment variable.
|
|
func init() {
|
|
env := os.Getenv("DEBUG")
|
|
|
|
if "" != env {
|
|
Enable(env)
|
|
}
|
|
}
|
|
|
|
// SetWriter replaces the default of os.Stderr with `w`.
|
|
func SetWriter(w io.Writer) {
|
|
m.Lock()
|
|
defer m.Unlock()
|
|
writer = w
|
|
}
|
|
|
|
// Disable all pattern matching. This function is thread-safe.
|
|
func Disable() {
|
|
m.Lock()
|
|
defer m.Unlock()
|
|
enabled = false
|
|
}
|
|
|
|
// Enable the given debug `pattern`. Patterns take a glob-like form,
|
|
// for example if you wanted to enable everything, just use "*", or
|
|
// if you had a library named mongodb you could use "mongodb:connection",
|
|
// or "mongodb:*". Multiple matches can be made with a comma, for
|
|
// example "mongo*,redis*".
|
|
//
|
|
// This function is thread-safe.
|
|
func Enable(pattern string) {
|
|
m.Lock()
|
|
defer m.Unlock()
|
|
pattern = regexp.QuoteMeta(pattern)
|
|
pattern = strings.Replace(pattern, "\\*", ".*?", -1)
|
|
pattern = strings.Replace(pattern, ",", "|", -1)
|
|
pattern = "^(" + pattern + ")$"
|
|
reg = regexp.MustCompile(pattern)
|
|
enabled = true
|
|
}
|
|
|
|
// Debug creates a debug function for `name` which you call
|
|
// with printf-style arguments in your application or library.
|
|
func Debug(name string) DebugFunction {
|
|
prevGlobal := time.Now()
|
|
color := colors[rand.Intn(len(colors))]
|
|
prev := time.Now()
|
|
|
|
return func(format string, args ...interface{}) {
|
|
if !enabled {
|
|
return
|
|
}
|
|
|
|
if !reg.MatchString(name) {
|
|
return
|
|
}
|
|
|
|
d := deltas(prevGlobal, prev, color)
|
|
fmt.Fprintf(writer, d+" \033["+color+"m"+name+"\033[0m - "+format+"\n", args...)
|
|
prevGlobal = time.Now()
|
|
prev = time.Now()
|
|
}
|
|
}
|
|
|
|
// Return formatting for deltas.
|
|
func deltas(prevGlobal, prev time.Time, color string) string {
|
|
now := time.Now()
|
|
global := now.Sub(prevGlobal).Nanoseconds()
|
|
delta := now.Sub(prev).Nanoseconds()
|
|
ts := now.UTC().Format("15:04:05.000")
|
|
deltas := fmt.Sprintf("%s %-6s \033["+color+"m%-6s", ts, humanizeNano(global), humanizeNano(delta))
|
|
return deltas
|
|
}
|
|
|
|
// Humanize nanoseconds to a string.
|
|
func humanizeNano(n int64) string {
|
|
var suffix string
|
|
|
|
switch {
|
|
case n > 1e9:
|
|
n /= 1e9
|
|
suffix = "s"
|
|
case n > 1e6:
|
|
n /= 1e6
|
|
suffix = "ms"
|
|
case n > 1e3:
|
|
n /= 1e3
|
|
suffix = "us"
|
|
default:
|
|
suffix = "ns"
|
|
}
|
|
|
|
return strconv.Itoa(int(n)) + suffix
|
|
}
|