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This function is unlike get_events in that it makes it easy to process
one event at a time. This is useful in the mirroring test cases, where
we want to process just one event (BLOCK_JOB_ERROR) and leave the others
to a helper function.
Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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In QEMUMonitorProtocol, commit e9d17b6 removed the __sockfile creation
from __negotiate_capabilities(), which breaks _accept(). This causes
failures in qemu-io python based tests (i.e. tests 030 and 040).
This patch creates the sockfile in __accept() as well.
Signed-off-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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This method is used in the following qemu-ga-client script
to implement non-blocking operations.
Signed-off-by: Ryota Ozaki <ozaki.ryota@gmail.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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This is a preparation for qemu-ga-client which uses
QEMUMonitorProtocol class. The class tries to
negotiate capabilities on connect, however, qemu-ga
doesn't suppose it and fails.
This change makes the negotiation optional, though
it's still performed by default for compatibility.
Signed-off-by: Ryota Ozaki <ozaki.ryota@gmail.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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QEMU supports socket chardevs that establish connections like a server
or a client. The QEMUMonitorProtocol class only supports connecting as
a client. It is not possible to connect race-free when launching QEMU
since trying to connect before QEMU has bound and is listening on the
socket results in failure.
Add the QEMUMonitorProtocol(server=True) argument to bind and listen on
the socket. The QEMU process can then be launched and connects to the
already existing QMP socket without a race condition:
qmp = qmp.QEMUMonitorProtocol(monitor_path, server=True)
popen = subprocess.Popen(args)
qmp.accept()
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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The get_events() function polls for new QMP events and then returns. It
can be useful to wait for the next QMP event so add the boolean 'wait'
keyword argument.
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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This commit simplifies and fixes a number of problems in the Python
QEMUMonitorProtocol example class.
It's almost a rewrite and it DOES BREAK the qmp-shell script (which
is going to be fixed in the next commit).
However, I'm not going to split this in different commits because it
could get up to 10 commits, it's really not worth it for a simple
demo class.
Highlights:
o TCP sockets support
o QMP events support
o Add documentation
o Fix a number of unhandled errors
o Simplify methods that send commands to the Monitor
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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Remove the arbitrary limitation of 1024 characters per return string and
read complete lines instead. Required for device_show.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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This is a very simple shell written in Python for demonstration
purposes.
Unfortunately it's a bit awkward right now, as the user has
to specify the arguments names and the printed data can be
a raw dictionary or list, like the following example:
(QEMU) pci_add pci_addr=auto type=nic
{u'slot': 5, u'bus': 0, u'domain': 0, u'function': 0}
(QEMU)
It's worth to note that the shell is broken into two files.
One is the shell itself, the other is the QMP class which
handles the communication with QEMU.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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