func main() {
var ch chan int
var rch chan *ssh_broker.Broker_msg // response channel
var err error
var user *string
def_user := os.Getenv("USER")
def_key := os.Getenv("HOME") + "/.ssh/id_dsa"
asynch := flag.Bool("a", false, "asynch processing")
cmd := flag.String("c", "", "command to execute")
env_file := flag.String("e", "", "environment file for script")
host_list := flag.String("h", "localhost", "host name")
key := flag.String("k", def_key, "key file")
parms := flag.String("p", "", "parms")
parallel := flag.Int("P", 1, "parallel scripts")
rsync := flag.String("r", "", "rsync files:dir")
script := flag.String("s", "test_script", "script to execute")
user = flag.String("u", def_user, "user name")
flag.Parse()
if *key == "" {
home := os.Getenv("HOME")
k := fmt.Sprintf("%s/.ssh/id_rsa", home)
_, err = os.Stat(k)
if err != nil {
k = fmt.Sprintf("%s/.ssh/id_dsa", home)
_, err = os.Stat(k)
if err != nil {
fmt.Fprintf(os.Stderr, "cannot find default key file ~/.ssh/id_dsa\n")
os.Exit(1)
}
}
key = &k
}
keys := []string{*key}
broker := ssh_broker.Mk_broker(*user, keys)
if broker == nil {
fmt.Fprintf(os.Stderr, "unable to create an ssh broker\n")
os.Exit(1)
}
defer broker.Close()
broker.Start_initiators(30) // start three more initiators
ch = make(chan int, 10) // goroutine writes back to us on this
if *asynch {
rch = make(chan *ssh_broker.Broker_msg, 10)
go handle_responses(ch, rch)
}
if *rsync != "" {
toks := strings.Split(*rsync, ":") // assume file,file,file:dest_dir
if len(toks) != 2 {
fmt.Fprintf(os.Stderr, "bad rsynch string, expected file,file,file...:destdir\n")
os.Exit(1)
}
broker.Add_rsync(&toks[0], &toks[1])
broker.Set_verbose(true)
}
host := strings.Split(*host_list, ",")
wait4 := 0
for i := 0; i < *parallel; i++ {
for j := range host {
wait4++
if !*asynch {
if *cmd == "" {
fmt.Fprintf(os.Stderr, "running synch script parms=%s\n", *parms)
go test_script(broker, ch, &host[j], script, parms, env_file)
} else {
fmt.Fprintf(os.Stderr, "running synch command %s\n", *cmd)
go test_cmd(broker, ch, &host[j], cmd)
}
} else {
fmt.Fprintf(os.Stderr, "running asynch command on %s parallel=%d parms=%s\n", host[j], i, *parms)
if *cmd == "" { // -c not supplied
err = broker.NBRun_on_host(host[j], *script, *parms, (i*100)+j, rch)
} else {
err = broker.NBRun_cmd(host[j], *cmd, (i*100)+j, rch)
}
if err != nil {
fmt.Fprintf(os.Stderr, "asynch command submit failed: host=%s parms=%s: %s\n", host[j], *parms, err)
}
}
}
}
for i := 0; i < wait4; i++ {
fmt.Fprintf(os.Stderr, "waiting for %d to finish\n", wait4-i)
<-ch
}
}
func main() {
home := os.Getenv("HOME")
def_user := os.Getenv("LOGNAME")
def_rdir := "/tmp/tegu_b" // rsync directory created on remote hosts
def_rlist := // list of scripts to copy to remote hosts for execution
"/usr/bin/create_ovs_queues " +
"/usr/bin/map_mac2phost " +
"/usr/bin/ovs_sp2uuid " +
"/usr/bin/purge_ovs_queues " +
"/usr/bin/ql_setup_irl " +
"/usr/bin/ql_setup_ipt " +
"/usr/bin/send_ovs_fmod " +
"/usr/bin/tegu_add_mirror " +
"/usr/bin/tegu_del_mirror " +
"/usr/bin/ql_bw_fmods " +
"/usr/bin/ql_bwow_fmods " +
"/usr/bin/ql_set_trunks " +
"/usr/bin/ql_filter_rtr " +
"/usr/bin/setup_ovs_intermed "
if home == "" {
home = "/home/tegu" // probably bogus, but we'll have something
}
def_key := home + "/.ssh/id_rsa," + home + "/.ssh/id_dsa" // default ssh key to use
needs_help := flag.Bool("?", false, "show usage") // define recognised command line options
id := flag.Int("i", 0, "id")
key_files := flag.String("k", def_key, "ssh-key file(s) for broker")
log_dir := flag.String("l", "stderr", "log_dir")
parallel := flag.Int("p", 10, "parallel ssh commands")
no_rsync := flag.Bool("no-rsync", false, "turn off rsync")
rdir := flag.String("rdir", def_rdir, "rsync remote directory")
rlist := flag.String("rlist", def_rlist, "rsync file list")
tegu_host := flag.String("h", "localhost:29055", "tegu_host:port")
user := flag.String("u", def_user, "ssh user-name")
verbose := flag.Bool("v", false, "verbose")
vlevel := flag.Int("V", 1, "verbose-level")
flag.Parse() // actually parse the commandline
if *needs_help {
usage(version)
os.Exit(0)
}
if *id <= 0 {
fmt.Fprintf(os.Stderr, "ERR: must enter -i id (number) on command line\n")
os.Exit(1)
}
sheep = bleater.Mk_bleater(0, os.Stderr)
sheep.Set_prefix(fmt.Sprintf("agent-%d", *id)) // append the pid so that if multiple agents are running they'll use different log files
if *needs_help {
usage(version)
os.Exit(0)
}
if *verbose {
sheep.Set_level(1)
} else {
if *vlevel > 0 {
sheep.Set_level(uint(*vlevel))
}
}
if *log_dir != "stderr" { // allow it to stay on stderr
lfn := sheep.Mk_logfile_nm(log_dir, 86400)
sheep.Baa(1, "switching to log file: %s", *lfn)
sheep.Append_target(*lfn, false) // switch bleaters to the log file rather than stderr
go sheep.Sheep_herder(log_dir, 86400) // start the function that will roll the log now and again
}
sheep.Baa(1, "tegu_agent %s started", version)
sheep.Baa(1, "will contact tegu on port: %s", *tegu_host)
jc := jsontools.Mk_jsoncache() // create json cache to buffer tegu datagram input
sess_mgr := make(chan *connman.Sess_data, 1024) // session management to create tegu connections with and drive the session listener(s)
smgr := connman.NewManager("", sess_mgr) // get a manager, but no listen port opened
connect2tegu(smgr, tegu_host, sess_mgr) // establish initial connection
ntoks, key_toks := token.Tokenise_populated(*key_files, " ,") // allow space or , seps and drop nil tokens
if ntoks <= 0 {
sheep.Baa(0, "CRI: no ssh key files given (-k)")
os.Exit(1)
}
keys := make([]string, ntoks)
for i := range key_toks {
keys[i] = key_toks[i]
}
broker := ssh_broker.Mk_broker(*user, keys)
if broker == nil {
sheep.Baa(0, "CRI: unable to create an ssh broker")
os.Exit(1)
}
if !*no_rsync {
sheep.Baa(1, "will sync these files to remote hosts: %s", *rlist)
broker.Add_rsync(rlist, rdir)
}
sheep.Baa(1, "successfully created ssh_broker for user: %s, command path: %s", *user, *rdir)
broker.Start_initiators(*parallel)
for {
select { // wait on input from any channel -- just one now, but who knows
case sreq := <-sess_mgr: // data from the network
switch sreq.State {
case connman.ST_ACCEPTED: // shouldn't happen
sheep.Baa(1, "this shouldn't happen; accepted session????")
case connman.ST_NEW: // new connection; nothing to process here
case connman.ST_DISC:
sheep.Baa(1, "session to tegu was lost")
connect2tegu(smgr, tegu_host, sess_mgr) // blocks until connected and reports on the conn_ch channel when done
broker.Reset() // reset the broker each time we pick up a new tegu connection
case connman.ST_DATA:
sheep.Baa(3, "data: [%s] %d bytes received", sreq.Id, len(sreq.Buf))
jc.Add_bytes(sreq.Buf)
jblob := jc.Get_blob() // get next blob if ready
for jblob != nil {
resp := handle_blob(jblob, broker, rdir)
if resp != nil {
for i := range resp {
smgr.Write(sreq.Id, resp[i])
}
}
jblob = jc.Get_blob() // get next blob if more than one in the cache
}
}
} // end select
}
}
