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Simplify vmset acquirement logic

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This commit is contained in:
Pengfei Ni 2018-04-27 11:05:45 +08:00
parent a54cb15d7b
commit f753c916cd
1 changed files with 38 additions and 62 deletions
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100
pkg/cloudprovider/providers/azure/azure_controller_common.go
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@ -58,65 +58,11 @@ type controllerCommon struct {
cloud *Cloud
}
// AttachDisk attaches a vhd to vm. The vhd must exist, can be identified by diskName, diskURI, and lun.
func (c *controllerCommon) AttachDisk(isManagedDisk bool, diskName, diskURI string, nodeName types.NodeName, lun int32, cachingMode compute.CachingTypes) error {
// 1. vmType is standard, attach with availabilitySet.AttachDisk.
// getNodeVMSet gets the VMSet interface based on config.VMType and the real virtual machine type.
func (c *controllerCommon) getNodeVMSet(nodeName types.NodeName) (VMSet, error) {
// 1. vmType is standard, return cloud.vmSet directly.
if c.cloud.VMType == vmTypeStandard {
return c.cloud.vmSet.AttachDisk(isManagedDisk, diskName, diskURI, nodeName, lun, cachingMode)
}
// 2. vmType is Virtual Machine Scale Set (vmss), convert vmSet to scaleSet.
ss, ok := c.cloud.vmSet.(*scaleSet)
if !ok {
return fmt.Errorf("error of converting vmSet (%q) to scaleSet with vmType %q", c.cloud.vmSet, c.cloud.VMType)
}
// 3. If the node is managed by availability set, then attach with availabilitySet.AttachDisk.
managedByAS, err := ss.isNodeManagedByAvailabilitySet(mapNodeNameToVMName(nodeName))
if err != nil {
return err
}
if managedByAS {
// vm is managed by availability set.
return ss.availabilitySet.AttachDisk(isManagedDisk, diskName, diskURI, nodeName, lun, cachingMode)
}
// 4. Node is managed by vmss, attach with scaleSet.AttachDisk.
return ss.AttachDisk(isManagedDisk, diskName, diskURI, nodeName, lun, cachingMode)
}
// DetachDiskByName detaches a vhd from host. The vhd can be identified by diskName or diskURI.
func (c *controllerCommon) DetachDiskByName(diskName, diskURI string, nodeName types.NodeName) error {
// 1. vmType is standard, detach with availabilitySet.DetachDiskByName.
if c.cloud.VMType == vmTypeStandard {
return c.cloud.vmSet.DetachDiskByName(diskName, diskURI, nodeName)
}
// 2. vmType is Virtual Machine Scale Set (vmss), convert vmSet to scaleSet.
ss, ok := c.cloud.vmSet.(*scaleSet)
if !ok {
return fmt.Errorf("error of converting vmSet (%q) to scaleSet with vmType %q", c.cloud.vmSet, c.cloud.VMType)
}
// 3. If the node is managed by availability set, then detach with availabilitySet.DetachDiskByName.
managedByAS, err := ss.isNodeManagedByAvailabilitySet(mapNodeNameToVMName(nodeName))
if err != nil {
return err
}
if managedByAS {
// vm is managed by availability set.
return ss.availabilitySet.DetachDiskByName(diskName, diskURI, nodeName)
}
// 4. Node is managed by vmss, detach with scaleSet.DetachDiskByName.
return ss.DetachDiskByName(diskName, diskURI, nodeName)
}
// getNodeDataDisks invokes vmSet interfaces to get data disks for the node.
func (c *controllerCommon) getNodeDataDisks(nodeName types.NodeName) ([]compute.DataDisk, error) {
// 1. vmType is standard, get data disks with availabilitySet.GetDataDisks.
if c.cloud.VMType == vmTypeStandard {
return c.cloud.vmSet.GetDataDisks(nodeName)
return c.cloud.vmSet, nil
}
// 2. vmType is Virtual Machine Scale Set (vmss), convert vmSet to scaleSet.
@ -125,18 +71,48 @@ func (c *controllerCommon) getNodeDataDisks(nodeName types.NodeName) ([]compute.
return nil, fmt.Errorf("error of converting vmSet (%q) to scaleSet with vmType %q", c.cloud.vmSet, c.cloud.VMType)
}
// 3. If the node is managed by availability set, then get with availabilitySet.GetDataDisks.
// 3. If the node is managed by availability set, then return ss.availabilitySet.
managedByAS, err := ss.isNodeManagedByAvailabilitySet(mapNodeNameToVMName(nodeName))
if err != nil {
return nil, err
}
if managedByAS {
// vm is managed by availability set.
return ss.availabilitySet.GetDataDisks(nodeName)
return ss.availabilitySet, nil
}
// 4. Node is managed by vmss, detach with scaleSet.GetDataDisks.
return ss.GetDataDisks(nodeName)
// 4. Node is managed by vmss
return ss, nil
}
// AttachDisk attaches a vhd to vm. The vhd must exist, can be identified by diskName, diskURI, and lun.
func (c *controllerCommon) AttachDisk(isManagedDisk bool, diskName, diskURI string, nodeName types.NodeName, lun int32, cachingMode compute.CachingTypes) error {
vmset, err := c.getNodeVMSet(nodeName)
if err != nil {
return err
}
return vmset.AttachDisk(isManagedDisk, diskName, diskURI, nodeName, lun, cachingMode)
}
// DetachDiskByName detaches a vhd from host. The vhd can be identified by diskName or diskURI.
func (c *controllerCommon) DetachDiskByName(diskName, diskURI string, nodeName types.NodeName) error {
vmset, err := c.getNodeVMSet(nodeName)
if err != nil {
return err
}
return vmset.DetachDiskByName(diskName, diskURI, nodeName)
}
// getNodeDataDisks invokes vmSet interfaces to get data disks for the node.
func (c *controllerCommon) getNodeDataDisks(nodeName types.NodeName) ([]compute.DataDisk, error) {
vmset, err := c.getNodeVMSet(nodeName)
if err != nil {
return nil, err
}
return vmset.GetDataDisks(nodeName)
}
// GetDiskLun finds the lun on the host that the vhd is attached to, given a vhd's diskName and diskURI.