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Number formatting

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This commit is contained in:
Jakob Borg 2014-06-28 11:24:25 +02:00
parent 518a4eb6ee
commit caad69a312
4 changed files with 224 additions and 150 deletions
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69
analytics.go Normal file
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@ -0,0 +1,69 @@
package main
import "sort"
type analytic struct {
Key string
Count int
Percentage float64
}
type analyticList []analytic
func (l analyticList) Less(a, b int) bool {
return l[b].Count < l[a].Count // inverse
}
func (l analyticList) Swap(a, b int) {
l[a], l[b] = l[b], l[a]
}
func (l analyticList) Len() int {
return len(l)
}
// Returns a list of frequency analytics for a given list of strings.
func analyticsFor(ss []string) []analytic {
m := make(map[string]int)
t := 0
for _, s := range ss {
m[s]++
t++
}
l := make([]analytic, 0, len(m))
for k, c := range m {
l = append(l, analytic{k, c, 100 * float64(c) / float64(t)})
}
sort.Sort(analyticList(l))
return l
}
func statsForInts(data []int) [4]float64 {
var res [4]float64
if len(data) == 0 {
return res
}
sort.Ints(data)
res[0] = float64(data[int(float64(len(data))*0.05)])
res[1] = float64(data[len(data)/2])
res[2] = float64(data[int(float64(len(data))*0.95)])
res[3] = float64(data[len(data)-1])
return res
}
func statsForFloats(data []float64) [4]float64 {
var res [4]float64
if len(data) == 0 {
return res
}
sort.Float64s(data)
res[0] = data[int(float64(len(data))*0.05)]
res[1] = data[len(data)/2]
res[2] = data[int(float64(len(data))*0.95)]
res[3] = data[len(data)-1]
return res
}

71
formatting.go Normal file
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@ -0,0 +1,71 @@
package main
import (
"bytes"
"fmt"
"strings"
)
func number(isBinary bool, v float64) string {
if isBinary {
return binary(v)
} else {
return metric(v)
}
}
type prefix struct {
Prefix string
Multiplier float64
}
var metricPrefixes = []prefix{
{"G", 1e9},
{"M", 1e6},
{"k", 1e3},
}
var binaryPrefixes = []prefix{
{"Gi", 1 << 30},
{"Mi", 1 << 20},
{"Ki", 1 << 10},
}
func metric(v float64) string {
return withPrefix(v, metricPrefixes)
}
func binary(v float64) string {
return withPrefix(v, binaryPrefixes)
}
func withPrefix(v float64, ps []prefix) string {
for _, p := range ps {
if v >= p.Multiplier {
return fmt.Sprintf("%.1f %s", v/p.Multiplier, p.Prefix)
}
}
return fmt.Sprint(v)
}
// commatize returns a number with sep as thousands separators. Handles
// integers and plain floats.
func commatize(sep, s string) string {
var b bytes.Buffer
fs := strings.SplitN(s, ".", 2)
l := len(fs[0])
for i := range fs[0] {
b.Write([]byte{s[i]})
if i < l-1 && (l-i)%3 == 1 {
b.WriteString(sep)
}
}
if len(fs) > 1 && len(fs[1]) > 0 {
b.WriteString(".")
b.WriteString(fs[1])
}
return b.String()
}

220
main.go
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@ -1,7 +1,6 @@
package main
import (
"bytes"
"encoding/json"
"flag"
"fmt"
@ -14,7 +13,6 @@ import (
"path"
"path/filepath"
"regexp"
"sort"
"strings"
"sync"
"time"
@ -28,48 +26,9 @@ var (
tpl *template.Template
)
type category struct {
Key string
Descr string
Unit string
}
var categories = []category{
{Key: "totFiles", Descr: "Files Managed per Node", Unit: ""},
{Key: "maxFiles", Descr: "Files in Largest Repo", Unit: ""},
{Key: "totMiB", Descr: "Data Managed per Node", Unit: "MiB"},
{Key: "maxMiB", Descr: "Data in Largest Repo", Unit: "MiB"},
{Key: "numNodes", Descr: "Number of Nodes in Cluster", Unit: ""},
{Key: "numRepos", Descr: "Number of Repositories Configured", Unit: ""},
{Key: "memoryUsage", Descr: "Memory Usage", Unit: "MiB"},
{Key: "memorySize", Descr: "System Memory", Unit: "MiB"},
{Key: "sha256Perf", Descr: "SHA-256 Hashing Performance", Unit: "MiB/s"},
}
var numRe = regexp.MustCompile(`\d\d\d$`)
var funcs = map[string]interface{}{
"number": func(n interface{}) string {
var s string
switch n := n.(type) {
case int:
s = fmt.Sprint(n)
case float64:
s = fmt.Sprintf("%.02f", n)
default:
return fmt.Sprint(n)
}
var b bytes.Buffer
l := len(s)
for i := range s {
b.Write([]byte{s[i]})
if (l-i)%3 == 1 {
b.WriteString(",")
}
}
return b.String()
},
"commatize": commatize,
"number": number,
}
func main() {
@ -203,12 +162,26 @@ func fileList() ([]string, error) {
l := make([]string, 0, len(files))
for _, f := range files {
l = append(l, f)
si, err := os.Stat(f)
if err != nil {
continue
}
if time.Since(si.ModTime()) < 24*time.Hour {
l = append(l, f)
}
}
return l, nil
}
type category struct {
Values [4]float64
Key string
Descr string
Unit string
Binary bool
}
var reportCache map[string]interface{}
var reportMutex sync.Mutex
@ -270,22 +243,78 @@ func getReport(key string) map[string]interface{} {
maxFiles = append(maxFiles, rep.RepoMaxFiles)
}
if rep.TotMiB > 0 {
totMiB = append(totMiB, rep.TotMiB)
totMiB = append(totMiB, rep.TotMiB*(1<<20))
}
if rep.RepoMaxMiB > 0 {
maxMiB = append(maxMiB, rep.RepoMaxMiB)
maxMiB = append(maxMiB, rep.RepoMaxMiB*(1<<20))
}
if rep.MemoryUsageMiB > 0 {
memoryUsage = append(memoryUsage, rep.MemoryUsageMiB)
memoryUsage = append(memoryUsage, rep.MemoryUsageMiB*(1<<20))
}
if rep.SHA256Perf > 0 {
sha256Perf = append(sha256Perf, rep.SHA256Perf)
sha256Perf = append(sha256Perf, rep.SHA256Perf*(1<<20))
}
if rep.MemorySize > 0 {
memorySize = append(memorySize, rep.MemorySize)
memorySize = append(memorySize, rep.MemorySize*(1<<20))
}
}
var categories []category
categories = append(categories, category{
Values: statsForInts(totFiles),
Descr: "Files Managed per Node",
})
categories = append(categories, category{
Values: statsForInts(maxFiles),
Descr: "Files in Largest Repo",
})
categories = append(categories, category{
Values: statsForInts(totMiB),
Descr: "Data Managed per Node",
Unit: "B",
Binary: true,
})
categories = append(categories, category{
Values: statsForInts(maxMiB),
Descr: "Data in Largest Repo",
Unit: "B",
Binary: true,
})
categories = append(categories, category{
Values: statsForInts(numNodes),
Descr: "Number of Nodes in Cluster",
})
categories = append(categories, category{
Values: statsForInts(numRepos),
Descr: "Number of Repositories Configured",
})
categories = append(categories, category{
Values: statsForInts(memoryUsage),
Descr: "Memory Usage",
Unit: "B",
Binary: true,
})
categories = append(categories, category{
Values: statsForInts(memorySize),
Descr: "System Memory",
Unit: "B",
Binary: true,
})
categories = append(categories, category{
Values: statsForFloats(sha256Perf),
Descr: "SHA-256 Hashing Performance",
Unit: "B/s",
Binary: true,
})
r := make(map[string]interface{})
r["key"] = key
r["nodes"] = nodes
@ -293,85 +322,12 @@ func getReport(key string) map[string]interface{} {
r["versions"] = analyticsFor(versions)
r["platforms"] = analyticsFor(platforms)
r["os"] = analyticsFor(oses)
r["numRepos"] = statsForInts(numRepos)
r["numNodes"] = statsForInts(numNodes)
r["totFiles"] = statsForInts(totFiles)
r["maxFiles"] = statsForInts(maxFiles)
r["totMiB"] = statsForInts(totMiB)
r["maxMiB"] = statsForInts(maxMiB)
r["memoryUsage"] = statsForInts(memoryUsage)
r["sha256Perf"] = statsForFloats(sha256Perf)
r["memorySize"] = statsForInts(memorySize)
reportCache = r
return r
}
type analytic struct {
Key string
Count int
Percentage float64
}
type analyticList []analytic
func (l analyticList) Less(a, b int) bool {
return l[b].Count < l[a].Count // inverse
}
func (l analyticList) Swap(a, b int) {
l[a], l[b] = l[b], l[a]
}
func (l analyticList) Len() int {
return len(l)
}
// Returns a list of frequency analytics for a given list of strings.
func analyticsFor(ss []string) []analytic {
m := make(map[string]int)
t := 0
for _, s := range ss {
m[s]++
t++
}
l := make([]analytic, 0, len(m))
for k, c := range m {
l = append(l, analytic{k, c, 100 * float64(c) / float64(t)})
}
sort.Sort(analyticList(l))
return l
}
func statsForInts(data []int) map[string]int {
sort.Ints(data)
res := make(map[string]int, 4)
if len(data) == 0 {
return res
}
res["fp"] = data[int(float64(len(data))*0.05)]
res["med"] = data[len(data)/2]
res["nfp"] = data[int(float64(len(data))*0.95)]
res["max"] = data[len(data)-1]
return res
}
func statsForFloats(data []float64) map[string]float64 {
sort.Float64s(data)
res := make(map[string]float64, 4)
if len(data) == 0 {
return res
}
res["fp"] = data[int(float64(len(data))*0.05)]
res["med"] = data[len(data)/2]
res["nfp"] = data[int(float64(len(data))*0.95)]
res["max"] = data[len(data)-1]
return res
}
func ensureDir(dir string, mode int) {
fi, err := os.Stat(dir)
if os.IsNotExist(err) {
@ -395,28 +351,6 @@ func transformVersion(v string) string {
return v
}
// commatize returns a number with sep as thousands separators. Handles
// integers and plain floats.
func commatize(sep, s string) string {
var b bytes.Buffer
fs := strings.SplitN(s, ".", 2)
l := len(fs[0])
for i := range fs[0] {
b.Write([]byte{s[i]})
if i < l-1 && (l-i)%3 == 1 {
b.WriteString(sep)
}
}
if len(fs) > 1 && len(fs[1]) > 0 {
b.WriteString(".")
b.WriteString(fs[1])
}
return b.String()
}
// timestamp returns a time stamp for the current hour, to be used as a cache key
func timestamp() string {
return time.Now().Format("20060102T15")

14
static/index.html
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@ -30,7 +30,7 @@ found in the LICENSE file.
<div class="col-md-12">
<h1>Syncthing Usage Data</h1>
<p>
This is the aggregated usage report data for today and yesterday. Data based on <b>{{.nodes}}</b> nodes that have reported in.
This is the aggregated usage report data for the last 24 hours. Data based on <b>{{.nodes}}</b> nodes that have reported in.
</p>
<table class="table table-striped">
@ -40,13 +40,13 @@ found in the LICENSE file.
</tr>
</thead>
<tbody>
{{range $cat := .categories}}
{{range .categories}}
<tr>
<td>{{$cat.Descr}}</td>
<td class="text-right">{{index $ $cat.Key "fp" | printf "%v" | commatize " "}} {{$cat.Unit}}</td>
<td class="text-right">{{index $ $cat.Key "med" | printf "%v" | commatize " "}} {{$cat.Unit}}</td>
<td class="text-right">{{index $ $cat.Key "nfp" | printf "%v" | commatize " "}} {{$cat.Unit}}</td>
<td class="text-right">{{index $ $cat.Key "max" | printf "%v" | commatize " "}} {{$cat.Unit}}</td>
<td>{{.Descr}}</td>
<td class="text-right">{{index .Values 0 | number .Binary | commatize " "}}{{.Unit}}</td>
<td class="text-right">{{index .Values 1 | number .Binary | commatize " "}}{{.Unit}}</td>
<td class="text-right">{{index .Values 2 | number .Binary | commatize " "}}{{.Unit}}</td>
<td class="text-right">{{index .Values 3 | number .Binary | commatize " "}}{{.Unit}}</td>
</tr>
{{end}}
</tbody>