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Merge pull request #43 from Fedosin/multiaz
Bug 1936871: support clouds with multiple availability zones
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,115 @@ | ||
| package operator | ||
|
|
||
| import ( | ||
| "fmt" | ||
|
|
||
| "github.com/gophercloud/gophercloud" | ||
| "github.com/gophercloud/gophercloud/openstack/blockstorage/extensions/availabilityzones" | ||
| "github.com/gophercloud/utils/openstack/clientconfig" | ||
| azutils "github.com/gophercloud/utils/openstack/compute/v2/availabilityzones" | ||
|
|
||
| "k8s.io/klog/v2" | ||
| ) | ||
|
|
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| // CloudInfo caches data fetched from the user's openstack cloud | ||
| type CloudInfo struct { | ||
| ComputeZones []string | ||
| VolumeZones []string | ||
|
|
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| clients *clients | ||
| } | ||
|
|
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| type clients struct { | ||
| computeClient *gophercloud.ServiceClient | ||
| volumeClient *gophercloud.ServiceClient | ||
| } | ||
|
|
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| var ci *CloudInfo | ||
|
|
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| // getCloudInfo fetches and caches metadata from openstack | ||
| func getCloudInfo() (*CloudInfo, error) { | ||
| var err error | ||
|
|
||
| if ci != nil { | ||
| return ci, nil | ||
| } | ||
|
|
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| ci = &CloudInfo{ | ||
| clients: &clients{}, | ||
| } | ||
|
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| opts := new(clientconfig.ClientOpts) | ||
| opts.Cloud = "openstack" | ||
|
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| ci.clients.computeClient, err = clientconfig.NewServiceClient("compute", opts) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to create a compute client: %w", err) | ||
| } | ||
|
|
||
| ci.clients.volumeClient, err = clientconfig.NewServiceClient("volume", opts) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to create a volume client: %w", err) | ||
| } | ||
|
|
||
| err = ci.collectInfo() | ||
| if err != nil { | ||
| klog.Warningf("Failed to generate OpenStack cloud info: %v", err) | ||
| return nil, nil | ||
| } | ||
|
|
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| return ci, nil | ||
| } | ||
|
|
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| func (ci *CloudInfo) collectInfo() error { | ||
| var err error | ||
|
|
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| ci.ComputeZones, err = ci.getComputeZones() | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| ci.VolumeZones, err = ci.getVolumeZones() | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func (ci *CloudInfo) getComputeZones() ([]string, error) { | ||
| zones, err := azutils.ListAvailableAvailabilityZones(ci.clients.computeClient) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to list compute availability zones: %w", err) | ||
| } | ||
|
|
||
| if len(zones) == 0 { | ||
| return nil, fmt.Errorf("could not find an available compute availability zone") | ||
| } | ||
|
|
||
| return zones, nil | ||
| } | ||
|
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||
| func (ci *CloudInfo) getVolumeZones() ([]string, error) { | ||
| allPages, err := availabilityzones.List(ci.clients.volumeClient).AllPages() | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to list volume availability zones: %w", err) | ||
| } | ||
|
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| availabilityZoneInfo, err := availabilityzones.ExtractAvailabilityZones(allPages) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to parse response with volume availability zone list: %w", err) | ||
| } | ||
|
|
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| if len(availabilityZoneInfo) == 0 { | ||
| return nil, fmt.Errorf("could not find an available volume availability zone") | ||
| } | ||
|
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| var zones []string | ||
| for _, zone := range availabilityZoneInfo { | ||
| if zone.ZoneState.Available { | ||
| zones = append(zones, zone.ZoneName) | ||
| } | ||
| } | ||
|
|
||
| return zones, nil | ||
| } |
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