callgraph/sysdig/start.go
2016-04-13 14:17:46 +02:00

43 lines
1.1 KiB
Go

package sysdig
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"github.com/mic92/clusterssh"
)
func Start(hostnames []string) (*clusterssh.Command, error) {
hosts := make([]clusterssh.Host, len(hostnames))
for i, arg := range hostnames {
host, err := clusterssh.ParseHost(arg)
if err != nil {
return nil, fmt.Errorf("invalid host '%s': %v", arg, err)
}
hosts[i] = *host
}
dir, err := filepath.Abs(filepath.Dir(os.Args[0]))
f1, err := os.Open(filepath.Join(dir, "capture-connections.lua"))
if err != nil {
return nil, fmt.Errorf("failed to open sysdig plugin")
}
sysdigPlugin, err := ioutil.ReadAll(f1)
if err != nil {
return nil, fmt.Errorf("failed to read sysdig plugin: %v", err)
}
f2, err := os.Open(filepath.Join(dir, "sysdig.sh"))
if err != nil {
return nil, fmt.Errorf("failed to open sysdig plugin: %v", err)
}
sysdigCommand, err := ioutil.ReadAll(f2)
if err != nil {
return nil, fmt.Errorf("failed to read sysdig command: %v", err)
}
cluster := clusterssh.Cluster{hosts}
cmd := cluster.Run(string(sysdigCommand), sysdigPlugin)
return &cmd, nil
}