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|
package main
import (
"flag"
"fmt"
"log"
"os"
"strings"
"text/tabwriter"
"github.com/containers/psgo"
)
func main() {
var (
descriptors []string
pidsList []string
data [][]string
err error
pids = flag.String("pids", "", "comma separated list of process IDs to retrieve")
format = flag.String("format", "", "ps(1) AIX format comma-separated string")
list = flag.Bool("list", false, "list all supported descriptors")
join = flag.Bool("join", false, "join namespace of provided pids (containers)")
fillMappings = flag.Bool("fill-mappings", false, "fill the UID and GID mappings with the current user namespace")
)
log.SetPrefix("psgo: ")
log.SetFlags(0)
flag.Parse()
if *fillMappings && !*join {
log.Fatal("-fill-mappings requires -join")
}
if *list {
fmt.Println(strings.Join(psgo.ListDescriptors(), ", "))
return
}
if *format != "" {
descriptors = strings.Split(*format, ",")
}
if *pids != "" {
pidsList = strings.Split(*pids, ",")
}
if len(pidsList) > 0 {
opts := psgo.JoinNamespaceOpts{FillMappings: *fillMappings}
if *join {
data, err = psgo.JoinNamespaceAndProcessInfoByPidsWithOptions(pidsList, descriptors, &opts)
} else {
data, err = psgo.ProcessInfoByPids(pidsList, descriptors)
}
if err != nil {
log.Panic(err)
}
} else {
data, err = psgo.ProcessInfo(descriptors)
if err != nil {
log.Panic(err)
}
}
tw := tabwriter.NewWriter(os.Stdout, 5, 1, 3, ' ', 0)
for _, d := range data {
fmt.Fprintln(tw, strings.Join(d, "\t"))
}
tw.Flush()
}
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