[KVM-AUTOTEST PATCH 10/17] KVM test: add VM.verify_alive() and Monitor.verify_responsive()

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Signed-off-by: Michael Goldish <mgoldish@xxxxxxxxxx>
---
 client/tests/kvm/kvm_monitor.py |   31 +++++++++++++++----------------
 client/tests/kvm/kvm_vm.py      |   21 ++++++++++++++++-----
 2 files changed, 31 insertions(+), 21 deletions(-)

diff --git a/client/tests/kvm/kvm_monitor.py b/client/tests/kvm/kvm_monitor.py
index 7e6b594..6321fbd 100644
--- a/client/tests/kvm/kvm_monitor.py
+++ b/client/tests/kvm/kvm_monitor.py
@@ -128,6 +128,17 @@ class Monitor:
         return s
 
 
+    def is_responsive(self):
+        """
+        Return True iff the monitor is responsive.
+        """
+        try:
+            self.verify_responsive()
+            return True
+        except MonitorError:
+            return False
+
+
 class HumanMonitor(Monitor):
     """
     Wraps "human monitor" commands.
@@ -248,17 +259,11 @@ class HumanMonitor(Monitor):
             self._lock.release()
 
 
-    def is_responsive(self):
+    def verify_responsive(self):
         """
         Make sure the monitor is responsive by sending a command.
-
-        @return: True if responsive, False otherwise
         """
-        try:
-            self.cmd("info status")
-            return True
-        except MonitorError:
-            return False
+        self.cmd("info status")
 
 
     # Command wrappers
@@ -615,17 +620,11 @@ class QMPMonitor(Monitor):
         return self.cmd_obj(self._build_cmd(cmd, args, id), timeout)
 
 
-    def is_responsive(self):
+    def verify_responsive(self):
         """
         Make sure the monitor is responsive by sending a command.
-
-        @return: True if responsive, False otherwise
         """
-        try:
-            self.cmd("query-status")
-            return True
-        except MonitorError:
-            return False
+        self.cmd("query-status")
 
 
     def get_events(self):
diff --git a/client/tests/kvm/kvm_vm.py b/client/tests/kvm/kvm_vm.py
index dc943cf..d236359 100755
--- a/client/tests/kvm/kvm_vm.py
+++ b/client/tests/kvm/kvm_vm.py
@@ -856,6 +856,7 @@ class VM:
                             monitor = kvm_monitor.HumanMonitor(
                                 monitor_name,
                                 self.get_monitor_filename(monitor_name))
+                        monitor.verify_responsive()
                         break
                     except kvm_monitor.MonitorError, e:
                         logging.warn(e)
@@ -998,15 +999,25 @@ class VM:
             return self.monitors[0]
 
 
+    def verify_alive(self):
+        """
+        Make sure the VM is alive and that the main monitor is responsive.
+
+        @raise VMDeadError: If the VM is dead
+        @raise: Various monitor exceptions if the monitor is unresponsive
+        """
+        if self.is_dead():
+            raise VMDeadError("VM is dead")
+        if self.monitors:
+            self.monitor.verify_responsive()
+
+
     def is_alive(self):
         """
         Return True if the VM is alive and its monitor is responsive.
         """
-        # Check if the process is running
-        if self.is_dead():
-            return False
-        # Try sending a monitor command
-        return bool(self.monitor) and self.monitor.is_responsive()
+        return not self.is_dead() and (not self.monitors or
+                                       self.monitor.is_responsive())
 
 
     def is_dead(self):
-- 
1.7.3.4

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