Introduce OsmoMgw class (osmo-mgw)

Change-Id: I6081ceaddcde748ada8b124a29432d498a9cbdac

src/osmo_gsm_tester/osmo_mgw.py

@@ -0,0 +1,87 @@
+# osmo_gsm_tester: specifics for running an osmo-mgw
+#
+# Copyright (C) 2017 by sysmocom - s.f.m.c. GmbH
+#
+# Author: Pau Espin Pedrol <pespin@sysmocom.de>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import os
+import pprint
+
+from . import log, util, config, template, process, osmo_ctrl, pcap_recorder
+
+class OsmoMgw(log.Origin):
+    suite_run = None
+    ip_address = None
+    run_dir = None
+    config_file = None
+    process = None
+
+    def __init__(self, suite_run, ip_address):
+        super().__init__(log.C_RUN, 'osmo-mgw_%s' % ip_address.get('addr'))
+        self.suite_run = suite_run
+        self.ip_address = ip_address
+
+    def start(self):
+        self.log('Starting osmo-mgw')
+        self.run_dir = util.Dir(self.suite_run.get_test_run_dir().new_dir(self.name()))
+        self.configure()
+        inst = util.Dir(os.path.abspath(self.suite_run.trial.get_inst('osmo-mgw')))
+        binary = inst.child('bin', 'osmo-mgw')
+        if not os.path.isfile(binary):
+            raise RuntimeError('Binary missing: %r' % binary)
+        lib = inst.child('lib')
+        if not os.path.isdir(lib):
+            raise RuntimeError('No lib/ in %r' % inst)
+
+        iface = util.ip_to_iface(self.addr())
+        pcap_recorder.PcapRecorder(self.suite_run, self.run_dir.new_dir('pcap'), iface,
+                                   'host %s and port not 22' % self.addr())
+
+        env = { 'LD_LIBRARY_PATH': util.prepend_library_path(lib) }
+
+        self.dbg(run_dir=self.run_dir, binary=binary, env=env)
+        self.process = process.Process(self.name(), self.run_dir,
+                                       (binary, '-c',
+                                        os.path.abspath(self.config_file)),
+                                       env=env)
+        self.suite_run.remember_to_stop(self.process)
+        self.process.launch()
+
+    def configure(self):
+        self.config_file = self.run_dir.new_file('osmo-mgw.cfg')
+        self.dbg(config_file=self.config_file)
+
+        values = dict(mgw=config.get_defaults('mgw'))
+        config.overlay(values, self.suite_run.config())
+        config.overlay(values, dict(mgw=dict(ip_address=self.ip_address)))
+
+        self.dbg('MGW CONFIG:\n' + pprint.pformat(values))
+
+        with open(self.config_file, 'w') as f:
+            r = template.render('osmo-mgw.cfg', values)
+            self.dbg(r)
+            f.write(r)
+
+    def addr(self):
+        return self.ip_address.get('addr')
+
+    def conf_for_client(self):
+        return dict(mgw=dict(ip_address=self.ip_address))
+
+    def running(self):
+        return not self.process.terminated()
+
+# vim: expandtab tabstop=4 shiftwidth=4

src/osmo_gsm_tester/templates/osmo-mgw.cfg.tmpl

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+!
+! MGCP configuration example
+!
+line vty
+ no login
+ bind ${mgw.ip_address.addr}
+mgcp
+ bind ip ${mgw.ip_address.addr}
+ bind port 2427
+ rtp net-range 4002 16000
+ rtp force-ptime 20
+ sdp audio payload number 98
+ sdp audio payload name AMR/8000
+ number endpoints 31
+ rtcp-omit
+ rtp-accept-all 1