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>
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>
This patch adds support for connection events to spice. The events are
quite simliar to the vnc events. Unlike vnc spice uses multiple tcp
channels though. qemu will report every single tcp connection (aka
spice channel). If you want track spice sessions only you can filter
for the main channel (channel-type == 1).
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
In which qmp-shell will exclusively use the HMP passthrough feature,
this is useful for testing.
Example:
# ./qmp-shell -H qmp-sock
Welcome to the HMP shell!
Connected to QEMU 0.13.50
(QEMU) info network
VLAN 0 devices:
user.0: net=10.0.2.0, restricted=n
e1000.0: model=e1000,macaddr=52:54:00:12:34:56
Devices not on any VLAN:
(QEMU)
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
This commit updates the qmp-shell script to use the new interface
introduced by the last commit.
Additionally, the following fixes/features are also introduced:
o TCP sockets support
o Update/add documentation
o Simple command-line completion
o Fix a number of unhandled errors
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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>
Fix example of STOP event that was just copy-and-pasted.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
This file contains a copy of the following information from the
qemu-monitor.hx file:
o QObject handlers entries
o QMP documentation (all SQMP/EQMP sections)
Right now it's only used to generate the QMP docs in QMP/, but
next commits will turn this into QMP's command dispatch table.
It's important to note that QObject handlers entries are going
to get duplicated: they will exist in both QMP's and HMP's
dispatch tables.
This will be fixed in the near future, when we add a proper
QMP call interface and HMP is converted to use it. This way we
can completely drop QObject handlers entries from HMP's tables.
NOTE: HMP specific constructions, like "q|quit", have been dropped.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
A number of changes I prefer to do in one shot:
- Fix example
- Small clarifications
- Add multiple monitors example
- Add 'Development Process' section
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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>
As sending "qmp_capabilities" on session start became mandatory, both
python examples were broken.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
This command was of minimal use before, now it is useless as the hpet
become a qdev device and is thus easily discoverable. We should
definitely not set query-hpet in QMP's stone, and there is also no good
reason to keep it for the interactive monitor.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
One of the most important missing feature in QMP today is its
supported commands documentation.
The plan is to make it part of self-description support, however
self-description is a big task we have been postponing for a
long time now and still don't know when it's going to be done.
In order not to compromise QMP adoption and make users' life easier,
this commit adds a simple text documentation which fully describes
all QMP supported commands.
This is not ideal for a number of reasons (harder to maintain,
text-only, etc) but does improve the current situation. To avoid at
least divering from the user monitor help and texi snippets, QMP bits
are also maintained inside qemu-monitor.hx, and hxtool is extended to
generate a single text file from them.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
It's emitted when the Virtual Machine resumes execution.
We currently have the STOP event but don't have the matching
RESUME one, this means that clients are notified when the VM
is stopped but don't get anything when it resumes.
Let's fix that as it's already causing some trouble to libvirt.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Some people might think that this event is emitted whenever the
time changes, be more specific.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
It's emitted whenever the watchdog device's timer expires. The action
taken is provided in the 'data' member.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Now we can say it's useful, the following changes have been made:
- Put events in alphabetical order
- Add examples to all events
- Document all 'data' members
- Small corrections and cleanups
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This event has been introduced in the first round of QMP commits,
turns out that it's based on the usage of the EXCP_DEBUG macro,
which has discussable semantics when exposed through QMP.
As libvirt doesn't use this, let's just drop it.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
With capability negotiation support clients will only have a chance
to check QEMU's version (ie. issue 'query-version') after the
negotiation procedure is done.
It might be useful to clients to check QEMU's version before
negotiating features, though.
To allow that, this commit adds the QEMU's version object to the
greeting message.
Not really sure this is needed, but doesn't hurt anyway.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit adds the basic definitions for the BLOCK_IO_ERROR
event, but actual event emission will be introduced by the
next commits.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
It's emitted when a VNC client session is activated by QEMU,
client's information such as port, IP and auth ID (if the
session is authenticated) are provided.
Event example:
{ "event": "VNC_INITIALIZED",
"timestamp": {"seconds": 1263475302, "microseconds": 150772},
"data": {
"server": { "auth": "sasl", "family": "ipv4",
"service": "5901", "host": "0.0.0.0"},
"client": { "family": "ipv4", "service": "46089",
"host": "127.0.0.1", "sasl_username": "lcapitulino" } } }
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
It's emitted when a VNC client connects to QEMU, client's information
such as port and IP address are provided.
Note that this event is emitted right when the connection is
established. This means that it happens before authentication
procedure and session initialization.
Event example:
{ "event": "VNC_CONNECTED",
"timestamp": { "seconds": 1262976601, "microseconds": 975795 },
"data": {
"server": { "auth": "sasl", "family": "ipv4",
"service": "5901", "host": "0.0.0.0" },
"client": { "family": "ipv4", "service": "58425",
"host": "127.0.0.1" } } }
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
- Remove "draft" status
- Change default success response to be json-object
- Change error and event data member to be a json-object
- Update examples
- Add new section "Compatibility Considerations"
- Other fixes and clarifications
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
A Python script which uses qmp.py to print some simple VM info.
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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>
Stefan Hajnoczi