Ping/pong charm

[osm/devops.git] / layers / netutils / reactive / layer_netutils.py

diff --git a/layers/netutils/reactive/layer_netutils.py b/layers/netutils/reactive/layer_netutils.py
index 8f8db26..1fd4cb2 100644 (file)
--- a/layers/netutils/reactive/layer_netutils.py
+++ b/layers/netutils/reactive/layer_netutils.py
@@ -1,20 +1,20 @@
 from charmhelpers.core.hookenv import (
-    config,
-    status_set,
     action_get,
-    action_set,
     action_fail,
+    action_set,
+    config,
     log,
+    status_set,
 )
 
 from charms.reactive import (
+    remove_state as remove_flag,
+    set_state as set_flag,
     when,
     when_not,
-    set_state as set_flag,
-    remove_state as remove_flag,
 )
-
-import subprocess
+import charms.sshproxy
+from subprocess import CalledProcessError
 
 
 @when_not('netutils.ready')
@@ -23,11 +23,40 @@ def ready():
     set_flag('netutils.ready')
 
 
+@when('actions.dig')
+def dig():
+    err = ''
+    try:
+        nsserver = action_get('nsserver')
+        host = action_get('host')
+        nstype = action_get('type')
+        cmd = "dig"
+
+        if nsserver:
+            cmd += " @{}".format(nsserver)
+        if host:
+            cmd += " {}".format(host)
+        else:
+            action_fail('Hostname required.')
+        if nstype:
+            cmd += " -t {}".format(nstype)
+
+        result, err = charms.sshproxy._run(cmd)
+    except:
+        action_fail('dig command failed:' + err)
+    else:
+        action_set({'outout': result})
+    finally:
+        remove_flag('actions.dig')
+
+
 @when('actions.nmap')
 def nmap():
     err = ''
     try:
-        result, err = _run('nmap {}'.format(action_get('destination')))
+        result, err = charms.sshproxy._run(
+            'nmap {}'.format(action_get('destination'))
+        )
     except:
         action_fail('nmap command failed:' + err)
     else:
@@ -40,7 +69,7 @@ def nmap():
 def ping():
     err = ''
     try:
-        result, err = _run('ping -qc {} {}'.format(
+        result, err = charms.sshproxy._run('ping -qc {} {}'.format(
             action_get('count'), action_get('destination'))
         )
 
@@ -53,11 +82,15 @@ def ping():
         remove_flag('actions.ping')
 
 
-
 @when('actions.traceroute')
 def traceroute():
     try:
-        result, err = _run('traceroute -m {} {}'.format(action_get('hops'), action_get('destination')))
+        result, err = charms.sshproxy._run(
+            'traceroute -m {} {}'.format(
+                    action_get('hops'),
+                    action_get('destination')
+            )
+        )
     except:
         action_fail('traceroute command failed')
     else:
@@ -67,20 +100,38 @@ def traceroute():
         remove_flag('actions.traceroute')
 
 
-
-def _run(cmd, env=None):
-    if isinstance(cmd, str):
-        cmd = cmd.split() if ' ' in cmd else [cmd]
-
-    log(cmd)
-    p = subprocess.Popen(cmd,
-                         env=env,
-                         stdout=subprocess.PIPE,
-                         stderr=subprocess.PIPE)
-    stdout, stderr = p.communicate()
-    retcode = p.poll()
-    if retcode > 0:
-        raise subprocess.CalledProcessError(returncode=retcode,
-                                            cmd=cmd,
-                                            output=stderr.decode("utf-8").strip())
-    return (stdout.decode('utf-8'), stderr.decode('utf-8'))
+@when('actions.iperf3')
+def iperf3():
+    err = ''
+    try:
+        # TODO: read all the flags via action_get and build the
+        # proper command line to run iperf3
+        host = action_get('host')
+
+        cmd = 'iperf3 -c {} --json'.format(host)
+        result, err = charms.sshproxy._run(cmd)
+    except CalledProcessError as e:
+        action_fail('iperf3 command failed:' + e.output)
+    else:
+        action_set({'outout': result})
+    finally:
+        remove_flag('actions.iperf3')
+
+
+@when('config.changed')
+def config_changed():
+    """ Handle configuration changes """
+    cfg = config()
+    if cfg.changed('iperf3'):
+        if cfg['iperf3']:
+            # start iperf in server + daemon mode
+            cmd = "iperf3 -s -D"
+        else:
+            cmd = "killall iperf3"
+        try:
+            charms.sshproxy._run(cmd)
+            log("iperf3 stopped.")
+        except CalledProcessError:
+            log("iperf3 not running.")
+        else:
+            log("iperf3 started.")