提交 78de9baa 编写于 作者: D Daniel Veillard

Fixing the python example, Daniel

上级 538686f9
......@@ -42,4 +42,4 @@ drivers present in driver.h:</p><ul><li>xend_internal: implements the driver fun
</ul><p>Note that a given driver may only implement a subset of those functions,
for example saving a domain state to disk and restoring it is only possible
though the Xen Daemon, on the other hand all interfaces allow to query the
runtime state of a given domain.</p><p> </p></div></div><div class="linkList2"><div class="llinks2"><h3 class="links2"><span>main menu</span></h3><ul><li><a href="index.html">Home</a></li><li><a href="news.html">Releases</a></li><li><a href="intro.html">Introduction</a></li><li><a href="architecture.html">libvirt architecture</a></li><li><a href="downloads.html">Downloads</a></li><li><a href="format.html">XML Format</a></li><li><a href="python.html">Binding for Python</a></li><li><a href="errors.html">Handling of errors</a></li><li><a href="FAQ.html">FAQ</a></li><li><a href="bugs.html">Reporting bugs and getting help</a></li><li><a href="html/index.html">API Menu</a></li><li><a href="examples/index.html">C code examples</a></li><li><a href="ChangeLog.html">Recent Changes</a></li></ul></div><div class="llinks2"><h3 class="links2"><span>related links</span></h3><ul><li><a href="https://www.redhat.com/archives/libvir-list/">Mail archive</a></li><li><a href="https://bugzilla.redhat.com/bugzilla/buglist.cgi?product=Fedora+Core&amp;component=libvirt&amp;bug_status=NEW&amp;bug_status=ASSIGNED&amp;bug_status=REOPENED&amp;bug_status=MODIFIED&amp;short_desc_type=allwordssubstr&amp;short_desc=&amp;long_desc_type=allwordssubstr">Open bugs</a></li><li><a href="http://hg.berrange.com/libraries/sys-virt">Perl bindings</a></li><li><a href="http://www.cl.cam.ac.uk/Research/SRG/netos/xen/index.html">Xen project</a></li><li><form action="search.php" enctype="application/x-www-form-urlencoded" method="get"><input name="query" type="text" size="12" value="Search..." /><input name="submit" type="submit" value="Go" /></form></li><li><a href="http://xmlsoft.org/"><img src="Libxml2-Logo-90x34.gif" alt="Made with Libxml2 Logo" /></a></li></ul><p class="credits">Graphics and design by <a href="mail:dfong@redhat.com">Diana Fong</a></p></div></div><div id="bottom"><p class="p1"></p></div></div></body></html>
runtime state of a given domain.</p><p></p></div></div><div class="linkList2"><div class="llinks2"><h3 class="links2"><span>main menu</span></h3><ul><li><a href="index.html">Home</a></li><li><a href="news.html">Releases</a></li><li><a href="intro.html">Introduction</a></li><li><a href="architecture.html">libvirt architecture</a></li><li><a href="downloads.html">Downloads</a></li><li><a href="format.html">XML Format</a></li><li><a href="python.html">Binding for Python</a></li><li><a href="errors.html">Handling of errors</a></li><li><a href="FAQ.html">FAQ</a></li><li><a href="bugs.html">Reporting bugs and getting help</a></li><li><a href="html/index.html">API Menu</a></li><li><a href="examples/index.html">C code examples</a></li><li><a href="ChangeLog.html">Recent Changes</a></li></ul></div><div class="llinks2"><h3 class="links2"><span>related links</span></h3><ul><li><a href="https://www.redhat.com/archives/libvir-list/">Mail archive</a></li><li><a href="https://bugzilla.redhat.com/bugzilla/buglist.cgi?product=Fedora+Core&amp;component=libvirt&amp;bug_status=NEW&amp;bug_status=ASSIGNED&amp;bug_status=REOPENED&amp;bug_status=MODIFIED&amp;short_desc_type=allwordssubstr&amp;short_desc=&amp;long_desc_type=allwordssubstr">Open bugs</a></li><li><a href="http://hg.berrange.com/libraries/sys-virt">Perl bindings</a></li><li><a href="http://www.cl.cam.ac.uk/Research/SRG/netos/xen/index.html">Xen project</a></li><li><form action="search.php" enctype="application/x-www-form-urlencoded" method="get"><input name="query" type="text" size="12" value="Search..." /><input name="submit" type="submit" value="Go" /></form></li><li><a href="http://xmlsoft.org/"><img src="Libxml2-Logo-90x34.gif" alt="Made with Libxml2 Logo" /></a></li></ul><p class="credits">Graphics and design by <a href="mail:dfong@redhat.com">Diana Fong</a></p></div></div><div id="bottom"><p class="p1"></p></div></div></body></html>
......@@ -196,7 +196,7 @@ for example saving a domain state to disk and restoring it is only possible
though the Xen Daemon, on the other hand all interfaces allow to query the
runtime state of a given domain.</p>
<p> </p>
<p></p>
<h2><a name="Downloads">Downloads</a></h2>
......@@ -316,18 +316,18 @@ will remain functional in spite of the evolution of the library.</p>
<h2><a name="Python" id="Python">Binding for Python</a></h2>
<p>Libvirt comes with direct support for the Python language (just make sure
you installed the libvirt-python package if not compiling from sources).
Also note that Daniel Berrange provides
<a href="http://hg.berrange.com/libraries/sys-virt">bindings for Perl</a>
you installed the libvirt-python package if not compiling from sources). Also
note that Daniel Berrange provides <a
href="http://hg.berrange.com/libraries/sys-virt">bindings for Perl</a>
too.</p>
<p> The Python binding should be complete and are mostly automatically generated from
the formal description of the API in xml. The bindings are articulated around
2 classes <code>virConnect</code> and virDomain mapping to the C types.
Functions in the C API taking either type as argument then becomes methods
for the classes, their name is just stripped from the virConnect or
virDomain(Get) prefix and the first letter gets converted to lower case, for
example the C functions:</p>
<p>The Python binding should be complete and are mostly automatically
generated from the formal description of the API in xml. The bindings are
articulated around 2 classes <code>virConnect</code> and virDomain mapping to
the C types. Functions in the C API taking either type as argument then
becomes methods for the classes, their name is just stripped from the
virConnect or virDomain(Get) prefix and the first letter gets converted to
lower case, for example the C functions:</p>
<p><code>int <a
href="html/libvirt-libvirt.html#virConnectNumOfDomains">virConnectNumOfDomains</a>
......@@ -375,8 +375,9 @@ if conn == None:
print 'Failed to open connection to the hypervisor'
sys.exit(1)
dom0 = conn.<span style="color: #007F00; background-color: #FFFFFF">lookupByName</span>("Domain-0")
if dom0 == None:
try:
dom0 = conn.<span style="color: #007F00; background-color: #FFFFFF">lookupByName</span>("Domain-0")
except:
print 'Failed to find the main domain'
sys.exit(1)
......@@ -392,6 +393,7 @@ from the C API, the only points to notice are:</p>
openReadOnly function allows the code to execute as a normal user.</li>
<li>getting an object representing the Domain 0 using <span
style="color: #007F00; background-color: #FFFFFF">lookupByName</span></li>
<li>if the domain is not found a libvirtError exception will be raised</li>
<li>extracting and printing some informations about the domain using
various <span
style="color: #E50073; background-color: #FFFFFF">methods</span>
......
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" /><link rel="stylesheet" type="text/css" href="libvirt.css" /><link rel="SHORTCUT ICON" href="/32favicon.png" /><title>Binding for Python</title></head><body><div id="container"><div id="intro"><div id="adjustments"></div><div id="pageHeader"></div><div id="content2"><h1 class="style1">Binding for Python</h1><p>Libvirt comes with direct support for the Python language (just make sure
you installed the libvirt-python package if not compiling from sources).
Also note that Daniel Berrange provides
<a href="http://hg.berrange.com/libraries/sys-virt">bindings for Perl</a>
too.</p><p> The Python binding should be complete and are mostly automatically generated from
the formal description of the API in xml. The bindings are articulated around
2 classes <code>virConnect</code> and virDomain mapping to the C types.
Functions in the C API taking either type as argument then becomes methods
for the classes, their name is just stripped from the virConnect or
virDomain(Get) prefix and the first letter gets converted to lower case, for
example the C functions:</p><p><code>int <a href="html/libvirt-libvirt.html#virConnectNumOfDomains">virConnectNumOfDomains</a>
you installed the libvirt-python package if not compiling from sources). Also
note that Daniel Berrange provides <a href="http://hg.berrange.com/libraries/sys-virt">bindings for Perl</a>
too.</p><p>The Python binding should be complete and are mostly automatically
generated from the formal description of the API in xml. The bindings are
articulated around 2 classes <code>virConnect</code> and virDomain mapping to
the C types. Functions in the C API taking either type as argument then
becomes methods for the classes, their name is just stripped from the
virConnect or virDomain(Get) prefix and the first letter gets converted to
lower case, for example the C functions:</p><p><code>int <a href="html/libvirt-libvirt.html#virConnectNumOfDomains">virConnectNumOfDomains</a>
(virConnectPtr conn);</code></p><p><code>int <a href="html/libvirt-libvirt.html#virDomainSetMaxMemory">virDomainSetMaxMemory</a>
(virDomainPtr domain, unsigned long memory);</code></p><p>become</p><p><code>virConn::numOfDomains(self)</code></p><p><code>virDomain::setMaxMemory(self, memory)</code></p><p>This process is fully automated, you can get a summary of the conversion
in the file libvirtclass.txt present in the python dir or in the docs.There
......@@ -35,8 +34,9 @@ if conn == None:
print 'Failed to open connection to the hypervisor'
sys.exit(1)
dom0 = conn.<span style="color: #007F00; background-color: #FFFFFF">lookupByName</span>("Domain-0")
if dom0 == None:
try:
dom0 = conn.<span style="color: #007F00; background-color: #FFFFFF">lookupByName</span>("Domain-0")
except:
print 'Failed to find the main domain'
sys.exit(1)
......@@ -46,6 +46,7 @@ from the C API, the only points to notice are:</p><ul><li>the import of the modu
<li>getting a connection to the hypervisor, in that case using the
openReadOnly function allows the code to execute as a normal user.</li>
<li>getting an object representing the Domain 0 using <span style="color: #007F00; background-color: #FFFFFF">lookupByName</span></li>
<li>if the domain is not found a libvirtError exception will be raised</li>
<li>extracting and printing some informations about the domain using
various <span style="color: #E50073; background-color: #FFFFFF">methods</span>
associated to the virDomain class.</li>
......
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