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This commit introduces the liqoctl offload namespace command to selectively offload a namespace.
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| // Copyright 2019-2021 The Liqo Authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package cmd | ||
|
|
||
| import ( | ||
| "context" | ||
|
|
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| "github.com/spf13/cobra" | ||
|
|
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| offloadingv1alpha1 "github.com/liqotech/liqo/apis/offloading/v1alpha1" | ||
| "github.com/liqotech/liqo/pkg/liqoctl/offload" | ||
| "github.com/liqotech/liqo/pkg/utils/args" | ||
| ) | ||
|
|
||
| func newOffloadCommand(ctx context.Context) *cobra.Command { | ||
| var offloadClusterCmd = &cobra.Command{ | ||
| Use: offload.UseCommand, | ||
| SilenceUsage: true, | ||
| Short: offload.LiqoctlOffloadShortHelp, | ||
| Long: offload.LiqoctlOffloadLongHelp, | ||
| Args: cobra.MinimumNArgs(2), | ||
| RunE: func(cmd *cobra.Command, args []string) error { | ||
| return offload.HandleOffloadCommand(ctx, cmd, args) | ||
| }, | ||
| } | ||
| podOffloadingStrategy := args.NewEnum([]string{string(offloadingv1alpha1.LocalAndRemotePodOffloadingStrategyType), | ||
| string(offloadingv1alpha1.RemotePodOffloadingStrategyType), | ||
| string(offloadingv1alpha1.LocalPodOffloadingStrategyType)}, | ||
| string(offloadingv1alpha1.LocalAndRemotePodOffloadingStrategyType)) | ||
|
|
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| offloadClusterCmd.PersistentFlags().Var(podOffloadingStrategy, | ||
| offload.PodOffloadingStrategyFlag, offload.PodOffloadingStrategyHelp) | ||
| namespaceMappingStrategy := args.NewEnum([]string{string(offloadingv1alpha1.EnforceSameNameMappingStrategyType), | ||
| string(offloadingv1alpha1.DefaultNameMappingStrategyType)}, | ||
| string(offloadingv1alpha1.DefaultNameMappingStrategyType)) | ||
|
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| offloadClusterCmd.PersistentFlags().Var(namespaceMappingStrategy, offload.NamespaceMappingStrategyFlag, | ||
| offload.NamespaceMappingStrategyHelp) | ||
| offloadClusterCmd.PersistentFlags().String(offload.AcceptedLabelsFlag, | ||
| offload.AcceptedLabelsDefault, offload.AcceptedLabelsHelp) | ||
| offloadClusterCmd.PersistentFlags().String(offload.DeniedLabelsFlag, | ||
| offload.DeniedLabelDefault, offload.DeniedLabelsHelp) | ||
| return offloadClusterCmd | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,59 @@ | ||
| // Copyright 2019-2021 The Liqo Authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package offload | ||
|
|
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| const ( | ||
| // LiqoctlOffloadShortHelp contains the short help string for liqoctl Offload command. | ||
| LiqoctlOffloadShortHelp = "Offload a namespace to remote clusters" | ||
| // LiqoctlOffloadLongHelp contains the Long help string for liqoctl Offload command. | ||
| LiqoctlOffloadLongHelp = `Offload a namespace to remote clusters with the default values: | ||
| $ liqoctl Offload cluster my-cluster | ||
| To just enable service reflection, offload a namespace with the EnforceSameName namespace mapping strategy and | ||
| and a Local --pod-offloading-strategy. | ||
| $ liqoctl offload namespace liqo-demo --namespace-mapping-strategy=EnforceSameName --pod-offloading-strategy=Local | ||
| ` | ||
| // UseCommand contains the verb of the Offload command. | ||
| UseCommand = "offload" | ||
| // ClusterResourceName contains the name of the resource offloaded in liqoctl Offload. | ||
| ClusterResourceName = "namespace" | ||
| // SuccessfulMessage is printed when a Offload cluster command has scucceded. | ||
| SuccessfulMessage = ` | ||
| Success 👌! | ||
| ` | ||
| // PodOffloadingStrategyFlag specifies the pod offloading strategy flag name. | ||
| PodOffloadingStrategyFlag = "pod-offloading-strategy" | ||
| // PodOffloadingStrategyHelp specifies the help message for the PodOffloadingStrategy flag. | ||
| PodOffloadingStrategyHelp = "Select the desired pod offloading strategy" | ||
| // NamespaceMappingStrategyFlag specifies the namespace mapping flag name. | ||
| NamespaceMappingStrategyFlag = "namespace-mapping-strategy" | ||
| // NamespaceMappingStrategyHelp specifies the help message for the NamespaceMappingStrategy flag. | ||
| NamespaceMappingStrategyHelp = "Select the desired pod offloading strategy" | ||
|
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| // AcceptedLabelsFlag specifies the accepted labels flag name. | ||
| AcceptedLabelsFlag = "accepted-cluster-labels" | ||
| // AcceptedLabelsDefault specifies the accepted default labels used to forge the clusterSelector field. | ||
| AcceptedLabelsDefault = "liqo.io/type=virtual-node" | ||
| // AcceptedLabelsHelp specifies the help message for the AcceptedLabels flag. | ||
| AcceptedLabelsHelp = "The set of labels accepted as valid clusterLabels for the clusterSelector field" | ||
| // DeniedLabelsFlag specifies the accepted labels flag name. | ||
| DeniedLabelsFlag = "denied-cluster-labels" | ||
| // DeniedLabelDefault specifies the denied default labels used to forge the clusterSelector field. | ||
| DeniedLabelDefault = "" | ||
| // DeniedLabelsHelp specifies the help message for the DeniedLabels flag. | ||
| DeniedLabelsHelp = "The set of labels identified as forbidden clusterLabels for the clusterSelector field" | ||
| ) |
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|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| // Copyright 2019-2021 The Liqo Authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| // Package offload includes the logic for the `liqoctl offload` command | ||
| package offload |
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| @@ -0,0 +1,137 @@ | ||
| // Copyright 2019-2021 The Liqo Authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
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| package offload | ||
|
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| import ( | ||
| "context" | ||
|
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| "github.com/spf13/cobra" | ||
| corev1 "k8s.io/api/core/v1" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/klog/v2" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| "sigs.k8s.io/controller-runtime/pkg/controller/controllerutil" | ||
|
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| offloadingv1alpha1 "github.com/liqotech/liqo/apis/offloading/v1alpha1" | ||
| "github.com/liqotech/liqo/pkg/consts" | ||
| "github.com/liqotech/liqo/pkg/liqoctl/common" | ||
| argsutils "github.com/liqotech/liqo/pkg/utils/args" | ||
| logsutils "github.com/liqotech/liqo/pkg/utils/logs" | ||
| ) | ||
|
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| // HandleOffloadCommand implements the "offload namespace" command. | ||
| // It forges and createOrUpdate a namespaceOffloading resource for a given namespace according to the flag values. | ||
| func HandleOffloadCommand(ctx context.Context, command *cobra.Command, args []string) error { | ||
| if !klog.V(4).Enabled() { | ||
| klog.SetLogFilter(logsutils.LogFilter{}) | ||
| } | ||
|
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| config, err := common.GetLiqoctlRestConf() | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| k8sClient, err := client.New(config, client.Options{}) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| var acceptedClusterLabels argsutils.StringMap | ||
| if err := acceptedClusterLabels.Set(command.Flag(AcceptedLabelsFlag).Value.String()); err != nil { | ||
| return err | ||
| } | ||
| var deniedClusterLabels argsutils.StringMap | ||
| if err := deniedClusterLabels.Set(command.Flag(DeniedLabelsFlag).Value.String()); err != nil { | ||
| return err | ||
| } | ||
|
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| nsOffloading := forgeNamespaceOffloading(command, args, acceptedClusterLabels, deniedClusterLabels) | ||
|
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| _, err = controllerutil.CreateOrUpdate(ctx, k8sClient, nsOffloading, func() error { | ||
| nsOffloading.Spec.PodOffloadingStrategy = forgePodOffloadingStrategy(command) | ||
| nsOffloading.Spec.NamespaceMappingStrategy = forgeNamespaceMappingStrategy(command) | ||
| nsOffloading.Spec.ClusterSelector = forgeClusterSelector(acceptedClusterLabels, deniedClusterLabels) | ||
| return nil | ||
| }) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| return nil | ||
| } | ||
|
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| func forgeNamespaceOffloading(command *cobra.Command, args []string, | ||
| acceptedLabels, deniedLabels argsutils.StringMap) *offloadingv1alpha1.NamespaceOffloading { | ||
| return &offloadingv1alpha1.NamespaceOffloading{ | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: consts.DefaultNamespaceOffloadingName, | ||
| Namespace: args[1], | ||
| }, | ||
| Spec: offloadingv1alpha1.NamespaceOffloadingSpec{ | ||
| NamespaceMappingStrategy: forgeNamespaceMappingStrategy(command), | ||
| PodOffloadingStrategy: forgePodOffloadingStrategy(command), | ||
| ClusterSelector: forgeClusterSelector(acceptedLabels, deniedLabels), | ||
| }, | ||
| } | ||
| } | ||
|
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| func forgeClusterSelector(acceptedLabels, deniedLabels argsutils.StringMap) corev1.NodeSelector { | ||
| var l []corev1.NodeSelectorTerm | ||
|
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| // No acceptedLabels are defined, backing to the default behavior | ||
| if len(acceptedLabels.StringMap) == 0 && len(deniedLabels.StringMap) == 0 { | ||
| return corev1.NodeSelector{ | ||
| NodeSelectorTerms: []corev1.NodeSelectorTerm{{ | ||
| MatchExpressions: []corev1.NodeSelectorRequirement{{ | ||
| Key: consts.TypeLabel, | ||
| Operator: corev1.NodeSelectorOpIn, | ||
| Values: []string{consts.TypeNode}, | ||
| }}}, | ||
| }, | ||
| } | ||
| } | ||
|
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| for k, v := range acceptedLabels.StringMap { | ||
| l = append(l, corev1.NodeSelectorTerm{ | ||
| MatchExpressions: []corev1.NodeSelectorRequirement{{ | ||
| Key: k, | ||
| Operator: corev1.NodeSelectorOpIn, | ||
| Values: []string{v}, | ||
| }, | ||
| }, | ||
| }) | ||
| } | ||
|
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| for k, v := range deniedLabels.StringMap { | ||
| l = append(l, corev1.NodeSelectorTerm{ | ||
| MatchExpressions: []corev1.NodeSelectorRequirement{{ | ||
| Key: k, | ||
| Operator: corev1.NodeSelectorOpNotIn, | ||
| Values: []string{v}, | ||
| }, | ||
| }, | ||
| }) | ||
| } | ||
|
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| return corev1.NodeSelector{NodeSelectorTerms: l} | ||
| } | ||
|
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| func forgePodOffloadingStrategy(command *cobra.Command) offloadingv1alpha1.PodOffloadingStrategyType { | ||
| return offloadingv1alpha1.PodOffloadingStrategyType(command.Flag(PodOffloadingStrategyFlag).Value.String()) | ||
| } | ||
|
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| func forgeNamespaceMappingStrategy(command *cobra.Command) offloadingv1alpha1.NamespaceMappingStrategyType { | ||
| return offloadingv1alpha1.NamespaceMappingStrategyType(command.Flag(NamespaceMappingStrategyFlag).Value.String()) | ||
| } |
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