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This patch adds a new public api that lists domains. The new approach is
different from those used before. There are key points to this:
1) The list is acquired atomically and contains both active and inactive
domains (guests). This eliminates the need to call two different list
APIs, where the state might change in between the calls.
2) The returned list consists of virDomainPtrs instead of names or ID's
that have to be converted to virDomainPtrs anyways using separate calls
for each one of them. This is more convenient and saves hypervisor calls.
3) The returned list is auto-allocated. This saves a lot of hassle for
the users.
4) Built in support for filtering. The API call supports various
filtering flags that modify the output list according to user needs.
Available filter groups:
Domain status:
VIR_CONNECT_LIST_DOMAINS_ACTIVE, VIR_CONNECT_LIST_DOMAINS_INACTIVE
Domain persistence:
VIR_CONNECT_LIST_DOMAINS_PERSISTENT,
VIR_CONNECT_LIST_DOMAINS_TRANSIENT
Domain state:
VIR_CONNECT_LIST_DOMAINS_RUNNING, VIR_CONNECT_LIST_DOMAINS_PAUSED,
VIR_CONNECT_LIST_DOMAINS_SHUTOFF, VIR_CONNECT_LIST_DOMAINS_OTHER
Existence of managed save image:
VIR_CONNECT_LIST_DOMAINS_MANAGEDSAVE,
VIR_CONNECT_LIST_DOMAINS_NO_MANAGEDSAVE
Auto-start option:
VIR_CONNECT_LIST_DOMAINS_AUTOSTART,
VIR_CONNECT_LIST_DOMAINS_NO_AUTOSTART
Existence of snapshot:
VIR_CONNECT_LIST_DOMAINS_HAS_SNAPSHOT,
VIR_CONNECT_LIST_DOMAINS_NO_SNAPSHOT
5) The python binding returns a list of domain objects that is very neat
to work with.
The only problem with this approach is no support from code generators
so both RPC code and python bindings had to be written manually.
*include/libvirt/libvirt.h.in: - add API prototype
- clean up whitespace mistakes nearby
*python/generator.py: - inhibit generation of the bindings for the new
api
*src/driver.h: - add driver prototype
- clean up some whitespace mistakes nearby
*src/libvirt.c: - add public implementation
*src/libvirt_public.syms: - export the new symbol
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|---|---|---|
| .. | ||
| tests | ||
| generator.py | ||
| libvirt-override-api.xml | ||
| libvirt-override-virConnect.py | ||
| libvirt-override-virStream.py | ||
| libvirt-override.c | ||
| libvirt-override.py | ||
| libvirt-qemu-override-api.xml | ||
| libvirt-qemu-override.c | ||
| Makefile.am | ||
| README | ||
| TODO | ||
| typewrappers.c | ||
| typewrappers.h | ||
libvirt Python Bindings README
==============================
Most of the libvirt python binding code is automatically generated
using the script generator.py, and the API description from
docs/libvirt-api.xml
Manually written files:
- libvirt-override.c: methods where the C binding needs to be hand crafted
- libvirt-override.py: global methods where the C and python bindings have different args
- libvirt-override-api.xml: methods where the auto-extracted API docs are not
suitable for python auto-generator. Overriding this if the method is going
into libvirt-override.c, but we still want auto-generated libvirt-override.py
- libvirt-override-virConnect.py: virConnect class methods
- typewrappers.h,.c: Python object wrappers for each libvirt C object
Auto-generated files:
- libvirt.py: The main python binding. Comprises auto-generated code, along
with contents from libvirt-override.py and libvirt-override-virConnect.py
- libvirt.c, libvirt.h: The C glue layer for the python binding. Comprises
auto-generated code, along with libvirt-override.c
- libvirt-export.c: List of auto-generated C methods, included into
the libvirt-override.c method table