Cellular Network Infrastructure » OsmoGSMTester

The idea here would be to mimic what's already done for SC5:

First add the power_supply node with 10.42.42.250 port 6 to here:

- label: Ettus B200
  type: osmo-bts-trx
  ipa_unit_id: 6
  addr: 10.42.42.50
  band: GSM-1800
  trx_list:
  - arfcn: 850
  - arfcn: 852
  ciphers: [a5_0, a5_1, a5_3]
  osmo_trx:
    type: uhd
    launch_trx: true
    remote_user: jenkins
    trx_ip: 10.42.42.116
    dev_args: "type=b200,serial=306BD11" 
    clock_reference: external
    multi_arfcn: true

Like it's currently done for SC5K:

- label: sysmoCell 5000
  type: osmo-bts-trx
  ipa_unit_id: 7
  addr: 10.42.42.51
  band: GSM-1800
  ciphers: [a5_0, a5_1, a5_3]
  trx_list:
    - power_supply:
        type: 'intellinet'
        device: '10.42.42.250'
        port: '5'
      arfcn: 862

Then bts_osmotrx.py should already power cycle the mentioned slot during start() if it was configured.

What we are missing is extending OsmoTrxUHD and OsmoTrxLMS like it's already done in TrxSC5, which basically means trying to connect to the remote host and running something there ("ls" or whatever) from time to time until the host is up and succeeds, and then trx_ready() should return true.

Quick diff of what should be needed, for illustration:

diff --git a/src/osmo_gsm_tester/obj/bts_osmotrx.py b/src/osmo_gsm_tester/obj/bts_osmotrx.py
index 8eed8cf..181d668 100644
--- a/src/osmo_gsm_tester/obj/bts_osmotrx.py
+++ b/src/osmo_gsm_tester/obj/bts_osmotrx.py
@@ -278,12 +278,30 @@ class OsmoTrx(Trx, metaclass=ABCMeta):
         proc.launch()
         return proc

+    def wait_remote_is_up(self)
+        name = "true" 
+        run_dir = self.run_dir.new_dir(name)
+        popen_args = ('true')
+        proc = process.RemoteProcess(name, run_dir, self.remote_user, self.listen_ip, None,
+                                     popen_args)
+        keep_trying = 10
+        while keep_trying > 0:
+            if proc.respawn_sync(raise_nonsuccess=False) == 0):
+                break
+            keep_trying = keep_trying - 1
+            self.log('Acessing osmo-trx remote failed, retrying %d more times' % keep_trying)
+            MainLoop.sleep(5)
+        if keep_trying == 0:
+            raise log.Error('Failed configuring osmo-trx-remote!')
+
     def start_remotely(self, keepalive):
         # Run remotely through ssh. We need to run osmo-trx under a wrapper
         # script since osmo-trx ignores SIGHUP and will keep running after
         # we close local ssh session. The wrapper script catches SIGHUP and
         # sends SIGINT to it.

+        wait_remote_is_up()
+
         rem_host = remote.RemoteHost(self.run_dir, self.remote_user, self.listen_ip)

         remote_prefix_dir = util.Dir(OsmoTrx.REMOTE_DIR)