func updateExistingConfigFromFlags()

in cmd/minikube/cmd/start_flags.go [648:762]
94 lines of code
19 McCabe index (conditional complexity)

func updateExistingConfigFromFlags(cmd *cobra.Command, existing *config.ClusterConfig) config.ClusterConfig { //nolint to suppress cyclomatic complexity 45 of func `updateExistingConfigFromFlags` is high (> 30)

	validateFlags(cmd, existing.Driver)

	cc := *existing

	if cmd.Flags().Changed(memory) && getMemorySize(cmd, cc.Driver) != cc.Memory {
		out.WarningT("You cannot change the memory size for an existing minikube cluster. Please first delete the cluster.")
	}

	if cmd.Flags().Changed(cpus) && viper.GetInt(cpus) != cc.CPUs {
		out.WarningT("You cannot change the CPUs for an existing minikube cluster. Please first delete the cluster.")
	}

	// validate the memory size in case user changed their system memory limits (example change docker desktop or upgraded memory.)
	validateRequestedMemorySize(cc.Memory, cc.Driver)

	if cmd.Flags().Changed(humanReadableDiskSize) && getDiskSize() != existing.DiskSize {
		out.WarningT("You cannot change the disk size for an existing minikube cluster. Please first delete the cluster.")
	}

	checkExtraDiskOptions(cmd, cc.Driver)
	if cmd.Flags().Changed(extraDisks) && viper.GetInt(extraDisks) != existing.ExtraDisks {
		out.WarningT("You cannot add or remove extra disks for an existing minikube cluster. Please first delete the cluster.")
	}

	updateBoolFromFlag(cmd, &cc.KeepContext, keepContext)
	updateBoolFromFlag(cmd, &cc.EmbedCerts, embedCerts)
	updateStringFromFlag(cmd, &cc.MinikubeISO, isoURL)
	updateStringFromFlag(cmd, &cc.KicBaseImage, kicBaseImage)
	updateStringFromFlag(cmd, &cc.Network, network)
	updateStringFromFlag(cmd, &cc.HyperkitVpnKitSock, vpnkitSock)
	updateStringSliceFromFlag(cmd, &cc.HyperkitVSockPorts, vsockPorts)
	updateStringSliceFromFlag(cmd, &cc.NFSShare, nfsShare)
	updateStringFromFlag(cmd, &cc.NFSSharesRoot, nfsSharesRoot)
	updateStringFromFlag(cmd, &cc.HostOnlyCIDR, hostOnlyCIDR)
	updateStringFromFlag(cmd, &cc.HypervVirtualSwitch, hypervVirtualSwitch)
	updateBoolFromFlag(cmd, &cc.HypervUseExternalSwitch, hypervUseExternalSwitch)
	updateStringFromFlag(cmd, &cc.HypervExternalAdapter, hypervExternalAdapter)
	updateStringFromFlag(cmd, &cc.KVMNetwork, kvmNetwork)
	updateStringFromFlag(cmd, &cc.KVMQemuURI, kvmQemuURI)
	updateBoolFromFlag(cmd, &cc.KVMGPU, kvmGPU)
	updateBoolFromFlag(cmd, &cc.KVMHidden, kvmHidden)
	updateBoolFromFlag(cmd, &cc.DisableDriverMounts, disableDriverMounts)
	updateStringFromFlag(cmd, &cc.UUID, uuid)
	updateBoolFromFlag(cmd, &cc.NoVTXCheck, noVTXCheck)
	updateBoolFromFlag(cmd, &cc.DNSProxy, dnsProxy)
	updateBoolFromFlag(cmd, &cc.HostDNSResolver, hostDNSResolver)
	updateStringFromFlag(cmd, &cc.HostOnlyNicType, hostOnlyNicType)
	updateStringFromFlag(cmd, &cc.NatNicType, natNicType)
	updateDurationFromFlag(cmd, &cc.StartHostTimeout, waitTimeout)
	updateStringSliceFromFlag(cmd, &cc.ExposedPorts, ports)
	updateStringFromFlag(cmd, &cc.SSHIPAddress, sshIPAddress)
	updateStringFromFlag(cmd, &cc.SSHUser, sshSSHUser)
	updateStringFromFlag(cmd, &cc.SSHKey, sshSSHKey)
	updateIntFromFlag(cmd, &cc.SSHPort, sshSSHPort)
	updateStringFromFlag(cmd, &cc.KubernetesConfig.Namespace, startNamespace)
	updateStringFromFlag(cmd, &cc.KubernetesConfig.APIServerName, apiServerName)
	updateStringSliceFromFlag(cmd, &cc.KubernetesConfig.APIServerNames, "apiserver-names")
	updateStringFromFlag(cmd, &cc.KubernetesConfig.DNSDomain, dnsDomain)
	updateStringFromFlag(cmd, &cc.KubernetesConfig.FeatureGates, featureGates)
	updateStringFromFlag(cmd, &cc.KubernetesConfig.ContainerRuntime, containerRuntime)
	updateStringFromFlag(cmd, &cc.KubernetesConfig.CRISocket, criSocket)
	updateStringFromFlag(cmd, &cc.KubernetesConfig.NetworkPlugin, networkPlugin)
	updateStringFromFlag(cmd, &cc.KubernetesConfig.ServiceCIDR, serviceCIDR)
	updateBoolFromFlag(cmd, &cc.KubernetesConfig.ShouldLoadCachedImages, cacheImages)
	updateIntFromFlag(cmd, &cc.KubernetesConfig.NodePort, apiServerPort)
	updateDurationFromFlag(cmd, &cc.CertExpiration, certExpiration)
	updateBoolFromFlag(cmd, &cc.Mount, createMount)
	updateStringFromFlag(cmd, &cc.MountString, mountString)
	updateStringFromFlag(cmd, &cc.Mount9PVersion, mount9PVersion)
	updateStringFromFlag(cmd, &cc.MountGID, mountGID)
	updateStringFromFlag(cmd, &cc.MountIP, mountIPFlag)
	updateIntFromFlag(cmd, &cc.MountMSize, mountMSize)
	updateStringSliceFromFlag(cmd, &cc.MountOptions, mountOptions)
	updateUint16FromFlag(cmd, &cc.MountPort, mountPortFlag)
	updateStringFromFlag(cmd, &cc.MountType, mountTypeFlag)
	updateStringFromFlag(cmd, &cc.MountUID, mountUID)
	updateStringFromFlag(cmd, &cc.BinaryMirror, binaryMirror)
	updateBoolFromFlag(cmd, &cc.DisableOptimizations, disableOptimizations)

	if cmd.Flags().Changed(kubernetesVersion) {
		cc.KubernetesConfig.KubernetesVersion = getKubernetesVersion(existing)
	}

	if cmd.Flags().Changed("extra-config") {
		cc.KubernetesConfig.ExtraOptions = getExtraOptions()
	}

	if cmd.Flags().Changed(cniFlag) || cmd.Flags().Changed(enableDefaultCNI) {
		cc.KubernetesConfig.CNI = getCNIConfig(cmd)
	}

	if cmd.Flags().Changed(waitComponents) {
		cc.VerifyComponents = interpretWaitFlag(*cmd)
	}

	if cmd.Flags().Changed("apiserver-ips") {
		// IPSlice not supported in Viper
		// https://github.com/spf13/viper/issues/460
		cc.KubernetesConfig.APIServerIPs = apiServerIPs
	}

	// Handle flags and legacy configuration upgrades that do not contain KicBaseImage
	if cmd.Flags().Changed(kicBaseImage) || cc.KicBaseImage == "" {
		cc.KicBaseImage = viper.GetString(kicBaseImage)
	}

	// If this cluster was stopped by a scheduled stop, clear the config
	if cc.ScheduledStop != nil && time.Until(time.Unix(cc.ScheduledStop.InitiationTime, 0).Add(cc.ScheduledStop.Duration)) <= 0 {
		cc.ScheduledStop = nil
	}

	return cc
}