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example.go
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example.go
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package main
import (
"fmt"
"log"
"github.com/InVisionApp/tabular"
)
var tab tabular.Columns
func init() {
tab = tabular.New()
tab.Col("env", "Environment", 14)
tab.Col("cls", "Cluster", 10)
tab.Col("svc", "Service", 15)
tab.Col("hst", "Database Host", 20)
tab.Col("pct", "%CPU", 7)
tab["pct"].RightJustified = true
}
var data = []struct {
e, c, s, d string
v float64
}{
{
e: "production",
c: "cluster-1",
s: "service-a",
d: "database-host-1",
v: 70.01,
},
{
e: "production",
c: "cluster-1",
s: "service-b",
d: "database-host-2",
v: 99.51,
},
{
e: "production",
c: "cluster-2",
s: "service-a",
d: "database-host-1",
v: 70.01,
},
{
e: "production",
c: "cluster-2",
s: "service-b",
d: "database-host-2",
v: 99.51,
},
}
func main() {
// Print Environments and Clusters
format := tab.Print("env", "cls")
for _, x := range data {
fmt.Printf(format, x.e, x.c)
}
// Print Environments, Clusters and Services
format = tab.Print("env", "cls", "svc")
for _, x := range data {
fmt.Printf(format, x.e, x.c, x.s)
}
// Print Clusters, Services and Database Hosts
format = tab.Print("cls", "svc", "hst", "pct")
for _, x := range data {
fmt.Printf(format, x.c, x.s, x.d, x.v)
}
// Print to a custom destination such as a log
table := tab.Parse("cls", "svc", "hst", "pct")
log.Println(table.Header)
log.Println(table.SubHeader)
for _, x := range data {
log.Printf(table.Format, x.c, x.s, x.d, x.v)
}
}