// Reads the group-file and returns it
func getGroup(c *cli.Context) *config.Group {
gfile := c.Args().Get(0)
gr, err := os.Open(gfile)
log.ErrFatal(err)
defer gr.Close()
groups, err := config.ReadGroupDescToml(gr)
log.ErrFatal(err)
if groups == nil || groups.Roster == nil || len(groups.Roster.List) == 0 {
log.Fatal("No servers found in roster from", gfile)
}
return groups
}
// Config contacts all servers and verifies if it receives a valid
// signature from each.
// If the roster is empty it will return an error.
// If a server doesn't reply in time, it will return an error.
func Config(tomlFileName string) error {
f, err := os.Open(tomlFileName)
log.ErrFatal(err, "Couldn't open group definition file")
group, err := config.ReadGroupDescToml(f)
log.ErrFatal(err, "Error while reading group definition file", err)
if len(group.Roster.List) == 0 {
log.ErrFatalf(err, "Empty entity or invalid group defintion in: %s",
tomlFileName)
}
log.Info("Checking the availability and responsiveness of the servers in the group...")
return Servers(group)
}