From 8951ad86cedfbd124fa4c2c36cb3e035ae0e1de5 Mon Sep 17 00:00:00 2001
From: Dmitry Guryanov <dguryanov@parallels.com>
Date: Tue, 7 Apr 2015 23:35:02 +0300
Subject: [PATCH] parallels: implement virDomainManagedSave

Implement virDomainManagedSave api function. In PCS
this feature called "suspend". You can suspend VM or
CT while it is in running or paused state. And after
resuming (or starting) it will have the same state, as
before suspend.

Signed-off-by: Dmitry Guryanov <dguryanov@parallels.com>
---
 src/parallels/parallels_driver.c | 69 +++++++++++++++++++++++++++++++-
 src/parallels/parallels_sdk.c    | 21 ++++++++++
 src/parallels/parallels_sdk.h    |  3 ++
 3 files changed, 92 insertions(+), 1 deletion(-)

diff --git a/src/parallels/parallels_driver.c b/src/parallels/parallels_driver.c
index f5e58a8fef..3102007e5e 100644
--- a/src/parallels/parallels_driver.c
+++ b/src/parallels/parallels_driver.c
@@ -990,6 +990,8 @@ parallelsDomainHasManagedSaveImage(virDomainPtr domain, unsigned int flags)
 {
     parallelsConnPtr privconn = domain->conn->privateData;
     virDomainObjPtr dom = NULL;
+    int state, reason;
+    int ret = 0;
 
     virCheckFlags(0, -1);
 
@@ -999,9 +1001,72 @@ parallelsDomainHasManagedSaveImage(virDomainPtr domain, unsigned int flags)
         return -1;
     }
 
+    state = virDomainObjGetState(dom, &reason);
+    if (state == VIR_DOMAIN_SHUTOFF && reason == VIR_DOMAIN_SHUTOFF_SAVED)
+        ret = 1;
     virObjectUnlock(dom);
 
-    return 0;
+    return ret;
+}
+
+static int
+parallelsDomainManagedSave(virDomainPtr domain, unsigned int flags)
+{
+    parallelsConnPtr privconn = domain->conn->privateData;
+    virDomainObjPtr dom = NULL;
+    int state, reason;
+    int ret = -1;
+
+    virCheckFlags(VIR_DOMAIN_SAVE_RUNNING |
+                  VIR_DOMAIN_SAVE_PAUSED, -1);
+
+    dom = virDomainObjListFindByUUID(privconn->domains, domain->uuid);
+    if (dom == NULL) {
+        parallelsDomNotFoundError(domain);
+        return -1;
+    }
+
+    state = virDomainObjGetState(dom, &reason);
+
+    if (state == VIR_DOMAIN_RUNNING && (flags & VIR_DOMAIN_SAVE_PAUSED)) {
+        ret = prlsdkDomainChangeStateLocked(privconn, dom, prlsdkPause);
+        if (ret)
+            goto cleanup;
+    }
+
+    ret = prlsdkDomainChangeStateLocked(privconn, dom, prlsdkSuspend);
+
+ cleanup:
+    virObjectUnlock(dom);
+    return ret;
+}
+
+static int
+parallelsDomainManagedSaveRemove(virDomainPtr domain, unsigned int flags)
+{
+    parallelsConnPtr privconn = domain->conn->privateData;
+    virDomainObjPtr dom = NULL;
+    int state, reason;
+    int ret = -1;
+
+    virCheckFlags(0, -1);
+
+    dom = virDomainObjListFindByUUID(privconn->domains, domain->uuid);
+    if (dom == NULL) {
+        parallelsDomNotFoundError(domain);
+        return -1;
+    }
+
+    state = virDomainObjGetState(dom, &reason);
+
+    if (!(state == VIR_DOMAIN_SHUTOFF && reason == VIR_DOMAIN_SHUTOFF_SAVED))
+        goto cleanup;
+
+    ret = prlsdkDomainManagedSaveRemove(privconn, dom);
+
+ cleanup:
+    virObjectUnlock(dom);
+    return ret;
 }
 
 static virHypervisorDriver parallelsDriver = {
@@ -1046,6 +1111,8 @@ static virHypervisorDriver parallelsDriver = {
     .connectIsSecure = parallelsConnectIsSecure, /* 1.2.5 */
     .connectIsAlive = parallelsConnectIsAlive, /* 1.2.5 */
     .domainHasManagedSaveImage = parallelsDomainHasManagedSaveImage, /* 1.2.13 */
+    .domainManagedSave = parallelsDomainManagedSave, /* 1.2.14 */
+    .domainManagedSaveRemove = parallelsDomainManagedSaveRemove, /* 1.2.14 */
 };
 
 static virConnectDriver parallelsConnectDriver = {
diff --git a/src/parallels/parallels_sdk.c b/src/parallels/parallels_sdk.c
index d61e14ed6d..1b6751b146 100644
--- a/src/parallels/parallels_sdk.c
+++ b/src/parallels/parallels_sdk.c
@@ -1720,6 +1720,14 @@ PRL_RESULT prlsdkResume(parallelsConnPtr privconn, PRL_HANDLE sdkdom)
     return waitJob(job, privconn->jobTimeout);
 }
 
+PRL_RESULT prlsdkSuspend(parallelsConnPtr privconn, PRL_HANDLE sdkdom)
+{
+    PRL_HANDLE job = PRL_INVALID_HANDLE;
+
+    job = PrlVm_Suspend(sdkdom);
+    return waitJob(job, privconn->jobTimeout);
+}
+
 int
 prlsdkDomainChangeStateLocked(parallelsConnPtr privconn,
                               virDomainObjPtr dom,
@@ -3210,3 +3218,16 @@ prlsdkUnregisterDomain(parallelsConnPtr privconn, virDomainObjPtr dom)
     virDomainObjListRemove(privconn->domains, dom);
     return 0;
 }
+
+int
+prlsdkDomainManagedSaveRemove(parallelsConnPtr privconn, virDomainObjPtr dom)
+{
+    parallelsDomObjPtr privdom = dom->privateData;
+    PRL_HANDLE job;
+
+    job = PrlVm_DropSuspendedState(privdom->sdkdom);
+    if (PRL_FAILED(waitJob(job, privconn->jobTimeout)))
+        return -1;
+
+    return 0;
+}
diff --git a/src/parallels/parallels_sdk.h b/src/parallels/parallels_sdk.h
index 780a226bf5..b084678e47 100644
--- a/src/parallels/parallels_sdk.h
+++ b/src/parallels/parallels_sdk.h
@@ -40,6 +40,7 @@ PRL_RESULT prlsdkKill(parallelsConnPtr privconn, PRL_HANDLE sdkdom);
 PRL_RESULT prlsdkStop(parallelsConnPtr privconn, PRL_HANDLE sdkdom);
 PRL_RESULT prlsdkPause(parallelsConnPtr privconn, PRL_HANDLE sdkdom);
 PRL_RESULT prlsdkResume(parallelsConnPtr privconn, PRL_HANDLE sdkdom);
+PRL_RESULT prlsdkSuspend(parallelsConnPtr privconn, PRL_HANDLE sdkdom);
 
 typedef PRL_RESULT (*prlsdkChangeStateFunc)(parallelsConnPtr privconn, PRL_HANDLE sdkdom);
 int
@@ -57,3 +58,5 @@ int prlsdkCreateVm(virConnectPtr conn, virDomainDefPtr def);
 int prlsdkCreateCt(virConnectPtr conn, virDomainDefPtr def);
 int
 prlsdkUnregisterDomain(parallelsConnPtr privconn, virDomainObjPtr dom);
+int
+prlsdkDomainManagedSaveRemove(parallelsConnPtr privconn, virDomainObjPtr dom);