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util.go
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/
util.go
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// Copyright 2014 David Persson. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"fmt"
"sort"
"strconv"
"github.com/kr/beanstalk"
)
// Helper function to print statistics. Can use whitelist
// if provided. Otherwise will print all keys.
func printStats(data map[string]string, whitelist []string) {
keys := make([]string, 0, len(data))
for k := range data {
if whitelist == nil || contains(k, whitelist) {
keys = append(keys, k)
}
}
sort.Strings(keys)
for i := range keys {
fmt.Printf("%25s: %s\n", keys[i], data[keys[i]])
}
}
// Helper function to convert integers from
// strings as returned by stats commands.
func castStatsValue(v string) int {
r, _ := strconv.ParseUint(v, 0, 0)
return int(r)
}
// Helper function to check if a given string is contained in an slice of
// strings.
func contains(n string, h []string) bool {
for _, v := range h {
if v == n {
return true
}
}
return false
}
func peekState(t beanstalk.Tube, state string) (id uint64, body []byte, err error) {
switch state {
case "ready":
return t.PeekReady()
case "delayed":
return t.PeekDelayed()
case "buried":
return t.PeekBuried()
}
return
}