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[libvirt] [PATCH v4 4/9] pvs: implement functions for domain life cycle management



Add functions for create/shutdown/destroy and suspend/resume domain.

Signed-off-by: Dmitry Guryanov <dguryanov parallels com>
---
 po/POTFILES.in       |    1 +
 src/pvs/pvs_driver.c |  148 ++++++++++++++++++++++++++++++++++++++++++++++++++
 src/pvs/pvs_driver.h |    1 +
 src/pvs/pvs_utils.c  |   18 ++++++
 4 files changed, 168 insertions(+), 0 deletions(-)

diff --git a/po/POTFILES.in b/po/POTFILES.in
index fb70cf7..cb0f7d6 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -165,6 +165,7 @@ src/xenapi/xenapi_utils.c
 src/xenxs/xen_sxpr.c
 src/xenxs/xen_xm.c
 src/pvs/pvs_driver.c
+src/pvs/pvs_utils.c
 tools/console.c
 tools/libvirt-guests.init.sh
 tools/virsh.c
diff --git a/src/pvs/pvs_driver.c b/src/pvs/pvs_driver.c
index 736aa55..b0835b0 100644
--- a/src/pvs/pvs_driver.c
+++ b/src/pvs/pvs_driver.c
@@ -59,6 +59,11 @@
 void pvsFreeDomObj(void *p);
 static virCapsPtr pvsBuildCapabilities(void);
 static int pvsClose(virConnectPtr conn);
+int pvsPause(virDomainObjPtr privdom);
+int pvsResume(virDomainObjPtr privdom);
+int pvsStart(virDomainObjPtr privdom);
+int pvsKill(virDomainObjPtr privdom);
+int pvsStop(virDomainObjPtr privdom);
 
 static void
 pvsDriverLock(pvsConnPtr driver)
@@ -86,6 +91,12 @@ pvsFreeDomObj(void *p)
     VIR_FREE(pdom);
 };
 
+static void
+pvsDomainEventQueue(pvsConnPtr driver, virDomainEventPtr event)
+{
+    virDomainEventStateQueue(driver->domainEventState, event);
+}
+
 static virCapsPtr
 pvsBuildCapabilities(void)
 {
@@ -746,6 +757,138 @@ pvsDomainGetAutostart(virDomainPtr domain, int *autostart)
     return ret;
 }
 
+typedef int (*pvsChangeState)    (virDomainObjPtr privdom);
+#define PVS_UUID(x)     (((pvsDomObjPtr)(x->privateData))->uuid)
+
+static int
+pvsDomainChangeState(virDomainPtr domain,
+                     virDomainState req_state, const char * req_state_name,
+                     pvsChangeState chstate,
+                     virDomainState new_state, int reason,
+                     int event_type, int event_detail)
+{
+    pvsConnPtr privconn = domain->conn->privateData;
+    virDomainObjPtr privdom;
+    virDomainEventPtr event = NULL;
+    int state;
+    int ret = -1;
+
+    pvsDriverLock(privconn);
+    privdom = virDomainFindByName(&privconn->domains, domain->name);
+    pvsDriverUnlock(privconn);
+
+    if (privdom == NULL) {
+        pvsError(VIR_ERR_INVALID_ARG, __FUNCTION__);
+        goto cleanup;
+    }
+
+    state = virDomainObjGetState(privdom, NULL);
+    if (state != req_state) {
+        pvsError(VIR_ERR_INTERNAL_ERROR, _("domain '%s' not %s"),
+                 privdom->def->name, req_state_name);
+        goto cleanup;
+    }
+
+    if (chstate(privdom))
+        goto cleanup;
+
+    virDomainObjSetState(privdom, new_state, reason);
+
+    event = virDomainEventNewFromObj(privdom, event_type, event_detail);
+    ret = 0;
+
+  cleanup:
+    if (privdom)
+        virDomainObjUnlock(privdom);
+
+    if (event) {
+        pvsDriverLock(privconn);
+        pvsDomainEventQueue(privconn, event);
+        pvsDriverUnlock(privconn);
+    }
+    return ret;
+}
+
+int pvsPause(virDomainObjPtr privdom)
+{
+    return pvsCmdRun(PRLCTL, "pause", PVS_UUID(privdom), NULL);
+}
+
+static int
+pvsPauseDomain(virDomainPtr domain)
+{
+    return pvsDomainChangeState(domain,
+                                VIR_DOMAIN_RUNNING, "running",
+                                pvsPause,
+                                VIR_DOMAIN_PAUSED, VIR_DOMAIN_PAUSED_USER,
+                                VIR_DOMAIN_EVENT_SUSPENDED,
+                                VIR_DOMAIN_EVENT_SUSPENDED_PAUSED);
+}
+
+int pvsResume(virDomainObjPtr privdom)
+{
+    return pvsCmdRun(PRLCTL, "resume", PVS_UUID(privdom), NULL);
+}
+
+static int
+pvsResumeDomain(virDomainPtr domain)
+{
+    return pvsDomainChangeState(domain,
+                                VIR_DOMAIN_PAUSED, "paused",
+                                pvsResume,
+                                VIR_DOMAIN_RUNNING, VIR_DOMAIN_RUNNING_UNPAUSED,
+                                VIR_DOMAIN_EVENT_RESUMED,
+                                VIR_DOMAIN_EVENT_RESUMED_UNPAUSED);
+}
+
+int pvsStart(virDomainObjPtr privdom)
+{
+    return pvsCmdRun(PRLCTL, "start", PVS_UUID(privdom), NULL);
+}
+
+static int
+pvsDomainCreate(virDomainPtr domain)
+{
+    return pvsDomainChangeState(domain,
+                                VIR_DOMAIN_SHUTOFF, "stopped",
+                                pvsStart,
+                                VIR_DOMAIN_RUNNING, VIR_DOMAIN_EVENT_STARTED_BOOTED,
+                                VIR_DOMAIN_EVENT_STARTED,
+                                VIR_DOMAIN_EVENT_STARTED_BOOTED);
+}
+
+int pvsKill(virDomainObjPtr privdom)
+{
+    return pvsCmdRun(PRLCTL, "stop", PVS_UUID(privdom), "--kill", NULL);
+}
+
+static int
+pvsDestroyDomain(virDomainPtr domain)
+{
+    return pvsDomainChangeState(domain,
+                                VIR_DOMAIN_RUNNING, "running",
+                                pvsKill,
+                                VIR_DOMAIN_SHUTOFF, VIR_DOMAIN_SHUTOFF_DESTROYED,
+                                VIR_DOMAIN_EVENT_STOPPED,
+                                VIR_DOMAIN_EVENT_STOPPED_DESTROYED);
+}
+
+int pvsStop(virDomainObjPtr privdom)
+{
+    return pvsCmdRun(PRLCTL, "stop", PVS_UUID(privdom), NULL);
+}
+
+static int
+pvsShutdownDomain(virDomainPtr domain)
+{
+    return pvsDomainChangeState(domain,
+                                VIR_DOMAIN_RUNNING, "running",
+                                pvsStop,
+                                VIR_DOMAIN_SHUTOFF, VIR_DOMAIN_SHUTOFF_SHUTDOWN,
+                                VIR_DOMAIN_EVENT_STOPPED,
+                                VIR_DOMAIN_EVENT_STOPPED_SHUTDOWN);
+}
+
 static virDriver pvsDriver = {
     .no = VIR_DRV_PVS,
     .name = "PVS",
@@ -768,6 +911,11 @@ static virDriver pvsDriver = {
     .domainGetXMLDesc = pvsDomainGetXMLDesc,    /* 0.9.12 */
     .domainIsPersistent = pvsDomainIsPersistent,        /* 0.9.12 */
     .domainGetAutostart = pvsDomainGetAutostart,        /* 0.9.12 */
+    .domainSuspend = pvsPauseDomain,    /* 0.9.12 */
+    .domainResume = pvsResumeDomain,    /* 0.9.12 */
+    .domainDestroy = pvsDestroyDomain,  /* 0.9.12 */
+    .domainShutdown = pvsShutdownDomain, /* 0.9.12 */
+    .domainCreate = pvsDomainCreate,    /* 0.9.12 */
 };
 
 /**
diff --git a/src/pvs/pvs_driver.h b/src/pvs/pvs_driver.h
index 2420ce6..080f34b 100644
--- a/src/pvs/pvs_driver.h
+++ b/src/pvs/pvs_driver.h
@@ -61,5 +61,6 @@ typedef struct _pvsConn *pvsConnPtr;
 int pvsRegister(void);
 
 virJSONValuePtr pvsParseOutput(const char *binary, ...);
+int pvsCmdRun(const char *binary, ...);
 
 #endif
diff --git a/src/pvs/pvs_utils.c b/src/pvs/pvs_utils.c
index 5d7411c..016317a 100644
--- a/src/pvs/pvs_utils.c
+++ b/src/pvs/pvs_utils.c
@@ -99,3 +99,21 @@ pvsParseOutput(const char *binary, ...)
 
     return jobj;
 }
+
+/*
+ * Run prlctl command and check for errors
+ *
+ * Return value is 0 in case of success, else - -1
+ */
+int
+pvsCmdRun(const char *binary, ...)
+{
+    int ret;
+    va_list list;
+
+    va_start(list, binary);
+    ret = pvsDoCmdRun(NULL, binary, list);
+    va_end(list);
+
+    return ret;
+}
-- 
1.7.1


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