func listAddresses(ctx context.Context) {
conn, err := grpc.Dial("172.18.0.1:8080")
assert(err)
defer conn.Close()
client := protocol.NewHostsClient(conn)
in := protocol.HostListReq{}
out, err := client.List(ctx, &in)
assert(err)
tabw := tabwriter.NewWriter(os.Stdout, 8, 8, 2, ' ', 0)
defer tabw.Flush()
fmt.Fprintf(tabw, "%s\t%s\t%s\t%s\n", "HOST", "NAME", "IP", "VERSION")
for _, host := range out.Hosts {
sort.Strings(host.Ipv4)
sort.Strings(host.Ipv6)
for _, ip := range host.Ipv4 {
fmt.Fprintf(tabw, "%s\t%s\t%s\t%s\n", host.Id[:8], host.Name, ip, "ipv4")
}
for _, ip := range host.Ipv6 {
fmt.Fprintf(tabw, "%s\t%s\t%s\t%s\n", host.Id[:8], host.Name, ip, "ipv6")
}
}
}
func Run(handler HandlerFunc) {
ctx := context.Background()
ctx, cancel := context.WithCancel(ctx)
go quitSignal(cancel)
defer cancel()
u, err := url.Parse(os.Getenv("SWITCHBOARD_URL"))
if err != nil {
log.Fatal(err)
}
if u.Scheme != "tcp" {
log.Fatal("SWITCHBOARD_URL must start with tcp://")
}
conn, err := grpc.Dial(u.Host)
if err != nil {
log.Fatal(err)
}
defer conn.Close()
plugin := &Plugin{
conn: conn,
hosts: protocol.NewHostsClient(conn),
rules: protocol.NewRulesClient(conn),
config: os.Getenv("SWITCHBOARD_CONFIG"),
}
err = handler(ctx, plugin)
if err != nil {
log.Fatal(err)
}
}
func listHosts(ctx context.Context) {
conn, err := grpc.Dial("172.18.0.1:8080")
assert(err)
defer conn.Close()
client := protocol.NewHostsClient(conn)
in := protocol.HostListReq{}
out, err := client.List(ctx, &in)
assert(err)
tabw := tabwriter.NewWriter(os.Stdout, 8, 8, 2, ' ', 0)
defer tabw.Flush()
fmt.Fprintf(tabw, "%s\t%s\t%s\n", "ID", "NAME", "STATE")
for _, host := range out.Hosts {
state := "down"
if host.Up {
state = "up"
}
fmt.Fprintf(tabw, "%s\t%s\t%v\n", host.Id[:8], host.Name, state)
}
}