コード例 #1
0
ファイル: network.go プロジェクト: allenbhuiyan/distributive
// returns a column of the routing table as a slice of strings
// TODO read from /proc/net/route instead
func RoutingTableColumn(name string) []string {
	cmd := exec.Command("route", "-n")
	out := chkutil.CommandOutput(cmd)
	table := tabular.ProbabalisticSplit(out)
	if len(table) < 1 {
		log.WithFields(log.Fields{
			"column": name,
			"table":  "\n" + tabular.ToString(table),
		}).Fatal("Routing table was not available or not properly parsed")
	}
	finalTable := table[1:] // has extra line before headers
	return tabular.GetColumnByHeader(name, finalTable)
}
コード例 #2
0
ファイル: packages.go プロジェクト: TanyaCouture/distributive
// getYumRepos constructs Repos from the yum.conf file at path. Gives non-zero
// Names, Fullnames, and URLs.
func getYumRepos() (repos []repo) {
	// safeAccess allows access w/o fear of a panic into a slice of strings
	safeAccess := func(slc []string, index int) string {
		// catch runtime panic
		defer func() {
			if err := recover(); err != nil {
				msg := "safeAccess: Please report this error"
				errutil.IndexError(msg, index, slc)
			}
		}() // invoke inside defer
		if len(slc) > index {
			return slc[index]
		}
		return ""
	}

	// get and parse output of `yum repolist`
	cmd := exec.Command("yum", "repolist")
	outstr := chkutil.CommandOutput(cmd)
	// handle empty case
	if strings.Contains(outstr, "repolist: 0") {
		return repos
	}
	slc := tabular.ProbabalisticSplit(outstr)

	ids := tabular.GetColumnNoHeader(0, slc) // TODO use columnbyheader here
	errutil.IndexError("getYumRepos", 2, ids)
	ids = ids[:len(ids)-2]

	names := tabular.GetColumnNoHeader(1, slc)    // TODO and here
	statuses := tabular.GetColumnNoHeader(2, slc) // TODO and here
	if len(ids) != len(names) || len(names) != len(statuses) {
		log.WithFields(log.Fields{
			"names":    len(names),
			"ids":      len(ids),
			"statuses": len(statuses),
		}).Warn("Could not fetch complete metadata for every repo.")
	}
	// Construct repos
	for i := range ids {
		name := safeAccess(names, i)
		id := safeAccess(ids, i)
		status := safeAccess(statuses, i)
		repo := repo{Name: name, ID: id, Status: status}
		repos = append(repos, repo)
	}
	return repos
}