Create region-zone-sysType hierarchy

pkg/asset/cluster/tfvars.go

@@ -875,6 +875,16 @@ func (t *TerraformVariables) Generate(parents asset.Parents) error {
 
 		err = powervsconfig.ValidatePERAvailability(client, installConfig.Config)
 		transitGatewayEnabled := err == nil
+		cpStanza := installConfig.Config.ControlPlane
+		if cpStanza == nil || cpStanza.Platform.PowerVS == nil || cpStanza.Platform.PowerVS.SysType == "" {
+			sysTypes, err := powervs.AvailableSysTypes(installConfig.Config.PowerVS.Region, installConfig.Config.PowerVS.Zone)
+			if err != nil {
+				return err
+			}
+			for i := range masters {
+				masterConfigs[i].SystemType = sysTypes[0]
+			}
+		}
 
 		serviceInstanceCRN, err := client.ServiceInstanceIDToCRN(ctx, installConfig.Config.PowerVS.ServiceInstanceID)
 		if err != nil {

pkg/asset/installconfig/platformprovisioncheck.go

@@ -175,6 +175,11 @@ func (a *PlatformProvisionCheck) Generate(dependencies asset.Parents) error {
 			return err
 		}
 
+		err = powervsconfig.ValidateSystemTypeForZone(client, ic.Config)
+		if err != nil {
+			return err
+		}
+
 		err = powervsconfig.ValidateServiceInstance(client, ic.Config)
 		if err != nil {
 			return err

pkg/asset/installconfig/powervs/regions.go

@@ -31,7 +31,11 @@ func IsKnownRegion(region string) bool {
 }
 
 func knownZones(region string) []string {
-	return powervs.Regions[region].Zones
+	zones := make([]string, 0, len(powervs.Regions[region].Zones))
+	for z := range powervs.Regions[region].Zones {
+		zones = append(zones, z)
+	}
+	return zones
 }
 
 // IsKnownZone return true is a specified zone is Known to the installer.

pkg/asset/installconfig/powervs/validation.go

@@ -263,7 +263,30 @@ func ValidateResourceGroup(client API, ic *types.InstallConfig) error {
 	return nil
 }
 
-// ValidateServiceInstance validates the service instance in our install config.
+// ValidateSystemTypeForZone checks if the specified sysType is available in the target zone.
+func ValidateSystemTypeForZone(client API, ic *types.InstallConfig) error {
+	if ic.ControlPlane == nil || ic.ControlPlane.Platform.PowerVS == nil || ic.ControlPlane.Platform.PowerVS.SysType == "" {
+		return nil
+	}
+	availableOnes, err := powervstypes.AvailableSysTypes(ic.PowerVS.Region, ic.PowerVS.Zone)
+	if err != nil {
+		return fmt.Errorf("failed to obtain available SysTypes for: %s", ic.PowerVS.Zone)
+	}
+	requested := ic.ControlPlane.Platform.PowerVS.SysType
+	found := false
+	for i := range availableOnes {
+		if requested == availableOnes[i] {
+			found = true
+			break
+		}
+	}
+	if found {
+		return nil
+	}
+	return fmt.Errorf("%s is not available in: %s", requested, ic.PowerVS.Zone)
+}
+
+// ValidateServiceInstance validates the optional service instance GUID in our install config.
 func ValidateServiceInstance(client API, ic *types.InstallConfig) error {
 	ctx, cancel := context.WithTimeout(context.TODO(), 5*time.Minute)
 	defer cancel()

pkg/asset/installconfig/powervs/validation_test.go

@@ -45,7 +45,7 @@ var (
 		validPrivateSubnetUSSouth2ID,
 	}
 	validUserID = "[email protected]"
-	validZone   = "dal10"
+	validZone   = "dal12"
 
 	existingDNSRecordsResponse = []powervs.DNSRecordResponse{
 		{
@@ -134,6 +134,10 @@ var (
 		"disaster-recover-site": true,
 		"power-vpn-connections": false,
 	}
+	defaultSysType           = "s922"
+	newSysType               = "s1022"
+	invalidZone              = "dal11"
+	validServiceInstanceGUID = ""
 )
 
 func validInstallConfig() *types.InstallConfig {
@@ -734,6 +738,140 @@ func TestValidatePERAvailability(t *testing.T) {
 	}
 }
 
+func TestValidateSystemTypeForZone(t *testing.T) {
+	cases := []struct {
+		name     string
+		edits    editFunctions
+		errorMsg string
+	}{
+		{
+			name: "Unknown Zone specified",
+			edits: editFunctions{
+				func(ic *types.InstallConfig) {
+					ic.Platform.PowerVS.Zone = invalidZone
+					ic.ControlPlane.Platform.PowerVS = validMachinePool()
+					ic.ControlPlane.Platform.PowerVS.SysType = defaultSysType
+				},
+			},
+			errorMsg: fmt.Sprintf("failed to obtain available SysTypes for: %s", invalidZone),
+		},
+		{
+			name: "No Platform block",
+			edits: editFunctions{
+				func(ic *types.InstallConfig) {
+					ic.ControlPlane.Platform.PowerVS = nil
+				},
+			},
+			errorMsg: "",
+		},
+		{
+			name: "Structure present, but no SysType specified",
+			edits: editFunctions{
+				func(ic *types.InstallConfig) {
+					ic.ControlPlane.Platform.PowerVS = validMachinePool()
+				},
+			},
+			errorMsg: "",
+		},
+		{
+			name: "Unavailable SysType specified for dal12 zone",
+			edits: editFunctions{
+				func(ic *types.InstallConfig) {
+					ic.Platform.PowerVS.Region = validRegion
+					ic.Platform.PowerVS.Zone = validZone
+					ic.ControlPlane.Platform.PowerVS = validMachinePool()
+					ic.ControlPlane.Platform.PowerVS.SysType = newSysType
+				},
+			},
+			errorMsg: fmt.Sprintf("%s is not available in: %s", newSysType, validZone),
+		},
+		{
+			name: "Good Zone/SysType combo specified",
+			edits: editFunctions{
+				func(ic *types.InstallConfig) {
+					ic.Platform.PowerVS.Region = validRegion
+					ic.Platform.PowerVS.Zone = validZone
+					ic.ControlPlane.Platform.PowerVS = validMachinePool()
+					ic.ControlPlane.Platform.PowerVS.SysType = defaultSysType
+				},
+			},
+			errorMsg: "",
+		},
+	}
+	setMockEnvVars()
+
+	mockCtrl := gomock.NewController(t)
+	defer mockCtrl.Finish()
+
+	powervsClient := mock.NewMockAPI(mockCtrl)
+
+	// Run tests
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			editedInstallConfig := validInstallConfig()
+			for _, edit := range tc.edits {
+				edit(editedInstallConfig)
+			}
+
+			aggregatedErrors := powervs.ValidateSystemTypeForZone(powervsClient, editedInstallConfig)
+			if tc.errorMsg != "" {
+				assert.Regexp(t, tc.errorMsg, aggregatedErrors)
+			} else {
+				assert.NoError(t, aggregatedErrors)
+			}
+		})
+	}
+}
+
+func TestValidateServiceInstance(t *testing.T) {
+	cases := []struct {
+		name     string
+		edits    editFunctions
+		errorMsg string
+	}{
+		{
+			name:     "valid install config",
+			edits:    editFunctions{},
+			errorMsg: "",
+		},
+		{
+			name: "invalid install config",
+			edits: editFunctions{
+				func(ic *types.InstallConfig) {
+					ic.Platform.PowerVS.ServiceInstanceGUID = "invalid-uuid"
+				},
+			},
+			errorMsg: "platform:powervs:serviceInstanceGUID has an invalid guid",
+		},
+	}
+	setMockEnvVars()
+
+	mockCtrl := gomock.NewController(t)
+	defer mockCtrl.Finish()
+
+	powervsClient := mock.NewMockAPI(mockCtrl)
+
+	// FIX: Unexpected call to *mock.MockAPI.ListServiceInstances([context.TODO.WithDeadline(2023-12-02 08:38:15.542340268 -0600 CST m=+300.012357408 [4m59.999979046s])]) at validation.go:289 because: there are no expected calls of the method "ListServiceInstances" for that receiver
+	powervsClient.EXPECT().ListServiceInstances(gomock.Any()).AnyTimes()
+
+	// Run tests
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			editedInstallConfig := validInstallConfig()
+			for _, edit := range tc.edits {
+				edit(editedInstallConfig)
+			}
+
+			aggregatedErrors := powervs.ValidateServiceInstance(powervsClient, editedInstallConfig)
+			if tc.errorMsg != "" {
+				assert.Regexp(t, tc.errorMsg, aggregatedErrors)
+			} else {
+				assert.NoError(t, aggregatedErrors)
+			}
+		})
+	}
+}
+
 func setMockEnvVars() {
 	os.Setenv("POWERVS_AUTH_FILEPATH", "./tmp/powervs/config.json")
 	os.Setenv("IBMID", "foo")

pkg/asset/machines/worker.go

@@ -186,6 +186,15 @@ func defaultPowerVSMachinePoolPlatform() powervstypes.MachinePool {
 		ProcType:   machinev1.PowerVSProcessorTypeShared,
 		SysType:    "s922",
 	}
+
+	sysTypes, err = powervstypes.AvailableSysTypes(ic.PowerVS.Region, ic.PowerVS.Zone)
+	if err == nil {
+		defaultMp.SysType = sysTypes[0]
+	} else {
+		logrus.Warnf("For given zone %v, AvailableSysTypes returns %v", ic.PowerVS.Zone, err)
+	}
+
+	return defaultMp
 }
 
 func defaultNutanixMachinePoolPlatform() nutanixtypes.MachinePool {