mirror of
https://github.com/edgelesssys/constellation.git
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62 lines
2.7 KiB
Go
62 lines
2.7 KiB
Go
package azureshared
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import (
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"errors"
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"fmt"
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"regexp"
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"strings"
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)
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var (
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azureVMProviderIDRegexp = regexp.MustCompile(`^azure:///subscriptions/([^/]+)/resourceGroups/([^/]+)/providers/Microsoft.Compute/virtualMachines/([^/]+)$`)
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azureVMSSProviderIDRegexp = regexp.MustCompile(`^azure:///subscriptions/([^/]+)/resourceGroups/([^/]+)/providers/Microsoft.Compute/virtualMachineScaleSets/([^/]+)/virtualMachines/([^/]+)$`)
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)
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// BasicsFromProviderID extracts subscriptionID and resourceGroup from both types of valid azure providerID.
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func BasicsFromProviderID(providerID string) (subscriptionID, resourceGroup string, err error) {
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subscriptionID, resourceGroup, _, err = VMInformationFromProviderID(providerID)
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if err == nil {
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return subscriptionID, resourceGroup, nil
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}
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subscriptionID, resourceGroup, _, _, err = ScaleSetInformationFromProviderID(providerID)
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if err == nil {
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return subscriptionID, resourceGroup, nil
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}
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return "", "", fmt.Errorf("providerID %v is malformatted", providerID)
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}
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// UIDFromProviderID extracts our own generated unique ID, which is the
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// suffix at the resource group, e.g., resource-group-J18dB
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// J18dB is the UID.
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func UIDFromProviderID(providerID string) (string, error) {
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_, resourceGroup, err := BasicsFromProviderID(providerID)
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if err != nil {
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return "", err
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}
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parts := strings.Split(resourceGroup, "-")
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return parts[len(parts)-1], nil
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}
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// VMInformationFromProviderID splits a provider's id belonging to a single azure instance into core components.
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// A providerID for individual VMs is build after the following schema:
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// - 'azure:///subscriptions/<subscription-id>/resourceGroups/<resource-group>/providers/Microsoft.Compute/virtualMachines/<instance-name>'
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func VMInformationFromProviderID(providerID string) (subscriptionID, resourceGroup, instanceName string, err error) {
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matches := azureVMProviderIDRegexp.FindStringSubmatch(providerID)
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if len(matches) != 4 {
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return "", "", "", errors.New("error splitting providerID")
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}
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return matches[1], matches[2], matches[3], nil
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}
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// ScaleSetInformationFromProviderID splits a provider's id belonging to an azure scaleset into core components.
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// A providerID for scale set VMs is build after the following schema:
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// - 'azure:///subscriptions/<subscription-id>/resourceGroups/<resource-group>/providers/Microsoft.Compute/virtualMachineScaleSets/<scale-set-name>/virtualMachines/<instance-id>'
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func ScaleSetInformationFromProviderID(providerID string) (subscriptionID, resourceGroup, scaleSet, instanceID string, err error) {
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matches := azureVMSSProviderIDRegexp.FindStringSubmatch(providerID)
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if len(matches) != 5 {
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return "", "", "", "", errors.New("error splitting providerID")
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}
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return matches[1], matches[2], matches[3], matches[4], nil
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}
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