[libvirt] [PATCH 1/7] conf: Generalize life cycle actions to event actions
Jiri Denemark
jdenemar at redhat.com
Thu Sep 27 14:41:31 UTC 2012
While current on_{poweroff,reboot,crash} action configuration is about
configuring life cycle actions, they can all be considered events and
actions that need to be done on a particular event. Let's generalize the
code this way so that it can be reused later for non-lifecycle events.
---
docs/formatdomain.html.in | 15 ++++++----
docs/schemas/domaincommon.rng | 8 +++---
src/conf/domain_conf.c | 66 +++++++++++++++++++++++--------------------
src/conf/domain_conf.h | 4 +--
4 files changed, 51 insertions(+), 42 deletions(-)
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index bc4cc4a..57444fb 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -907,15 +907,11 @@
This guest NUMA specification is currently available only for QEMU/KVM.
</p>
- <h3><a name="elementsLifecycle">Lifecycle control</a></h3>
+ <h3><a name="elementsEvents">Events configuration</a></h3>
<p>
It is sometimes necessary to override the default actions taken
- when a guest OS triggers a lifecycle operation. The following
- collections of elements allow the actions to be specified. A
- common use case is to force a reboot to be treated as a poweroff
- when doing the initial OS installation. This allows the VM to be
- re-configured for the first post-install bootup.
+ on various events.
</p>
<pre>
@@ -925,6 +921,13 @@
<on_crash>restart</on_crash>
...</pre>
+ <p>
+ The following collections of elements allow the actions to be
+ specified when a guest OS triggers a lifecycle operation. A
+ common use case is to force a reboot to be treated as a poweroff
+ when doing the initial OS installation. This allows the VM to be
+ re-configured for the first post-install bootup.
+ </p>
<dl>
<dt><code>on_poweroff</code></dt>
<dd>The content of this element specifies the action to take when
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index f47fdad..ab8d4a1 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -51,7 +51,7 @@
<ref name="clock"/>
<ref name="resources"/>
<ref name="features"/>
- <ref name="termination"/>
+ <ref name="events"/>
<optional>
<ref name="pm"/>
</optional>
@@ -2226,10 +2226,10 @@
</element>
</define>
<!--
- When a domain terminates multiple policies can be applied depending
- on how it ended:
+ When a certain event happens, multiple policies can be applied
+ depends on what happened:
-->
- <define name="termination">
+ <define name="events">
<interleave>
<optional>
<element name="on_reboot">
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 33e1e7f..40abf39 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -7518,11 +7518,12 @@ error:
return NULL;
}
-static int virDomainLifecycleParseXML(xmlXPathContextPtr ctxt,
- const char *xpath,
- int *val,
- int defaultVal,
- virLifecycleFromStringFunc convFunc)
+static int virDomainEventActionParseXML(xmlXPathContextPtr ctxt,
+ const char *name,
+ const char *xpath,
+ int *val,
+ int defaultVal,
+ virEventActionFromStringFunc convFunc)
{
char *tmp = virXPathString(xpath, ctxt);
if (tmp == NULL) {
@@ -7531,7 +7532,7 @@ static int virDomainLifecycleParseXML(xmlXPathContextPtr ctxt,
*val = convFunc(tmp);
if (*val < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
- _("unknown lifecycle action %s"), tmp);
+ _("unknown %s action: %s"), name, tmp);
VIR_FREE(tmp);
return -1;
}
@@ -8941,20 +8942,25 @@ static virDomainDefPtr virDomainDefParseXML(virCapsPtr caps,
VIR_FREE(nodes);
}
- if (virDomainLifecycleParseXML(ctxt, "string(./on_reboot[1])",
- &def->onReboot, VIR_DOMAIN_LIFECYCLE_RESTART,
- virDomainLifecycleTypeFromString) < 0)
+ if (virDomainEventActionParseXML(ctxt, "on_reboot",
+ "string(./on_reboot[1])",
+ &def->onReboot,
+ VIR_DOMAIN_LIFECYCLE_RESTART,
+ virDomainLifecycleTypeFromString) < 0)
goto error;
- if (virDomainLifecycleParseXML(ctxt, "string(./on_poweroff[1])",
- &def->onPoweroff, VIR_DOMAIN_LIFECYCLE_DESTROY,
- virDomainLifecycleTypeFromString) < 0)
+ if (virDomainEventActionParseXML(ctxt, "on_poweroff",
+ "string(./on_poweroff[1])",
+ &def->onPoweroff,
+ VIR_DOMAIN_LIFECYCLE_DESTROY,
+ virDomainLifecycleTypeFromString) < 0)
goto error;
- if (virDomainLifecycleParseXML(ctxt, "string(./on_crash[1])",
- &def->onCrash,
- VIR_DOMAIN_LIFECYCLE_CRASH_DESTROY,
- virDomainLifecycleCrashTypeFromString) < 0)
+ if (virDomainEventActionParseXML(ctxt, "on_crash",
+ "string(./on_crash[1])",
+ &def->onCrash,
+ VIR_DOMAIN_LIFECYCLE_CRASH_DESTROY,
+ virDomainLifecycleCrashTypeFromString) < 0)
goto error;
if (virDomainPMStateParseXML(ctxt,
@@ -11452,15 +11458,15 @@ virDomainEmulatorPinDel(virDomainDefPtr def)
}
static int
-virDomainLifecycleDefFormat(virBufferPtr buf,
- int type,
- const char *name,
- virLifecycleToStringFunc convFunc)
+virDomainEventActionDefFormat(virBufferPtr buf,
+ int type,
+ const char *name,
+ virEventActionToStringFunc convFunc)
{
const char *typeStr = convFunc(type);
if (!typeStr) {
virReportError(VIR_ERR_INTERNAL_ERROR,
- _("unexpected lifecycle type %d"), type);
+ _("unexpected %s action: %d"), name, type);
return -1;
}
@@ -13674,17 +13680,17 @@ virDomainDefFormatInternal(virDomainDefPtr def,
virBufferAddLit(buf, " </clock>\n");
}
- if (virDomainLifecycleDefFormat(buf, def->onPoweroff,
- "on_poweroff",
- virDomainLifecycleTypeToString) < 0)
+ if (virDomainEventActionDefFormat(buf, def->onPoweroff,
+ "on_poweroff",
+ virDomainLifecycleTypeToString) < 0)
goto cleanup;
- if (virDomainLifecycleDefFormat(buf, def->onReboot,
- "on_reboot",
- virDomainLifecycleTypeToString) < 0)
+ if (virDomainEventActionDefFormat(buf, def->onReboot,
+ "on_reboot",
+ virDomainLifecycleTypeToString) < 0)
goto cleanup;
- if (virDomainLifecycleDefFormat(buf, def->onCrash,
- "on_crash",
- virDomainLifecycleCrashTypeToString) < 0)
+ if (virDomainEventActionDefFormat(buf, def->onCrash,
+ "on_crash",
+ virDomainLifecycleCrashTypeToString) < 0)
goto cleanup;
if (def->pm.s3 || def->pm.s4) {
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 14dead3..0ae6e48 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -2144,8 +2144,8 @@ virDomainChrDefGetSecurityLabelDef(virDomainChrDefPtr def, const char *model);
virSecurityLabelDefPtr
virDomainDefAddSecurityLabelDef(virDomainDefPtr def, const char *model);
-typedef const char* (*virLifecycleToStringFunc)(int type);
-typedef int (*virLifecycleFromStringFunc)(const char *type);
+typedef const char* (*virEventActionToStringFunc)(int type);
+typedef int (*virEventActionFromStringFunc)(const char *type);
VIR_ENUM_DECL(virDomainTaint)
--
1.7.12
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