Meshync Dynamic Configuration from Meshsync #258
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| Original file line number | Diff line number | Diff line change | ||||
|---|---|---|---|---|---|---|
| @@ -0,0 +1,186 @@ | ||||||
| package config | ||||||
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| import ( | ||||||
| "context" | ||||||
| "errors" | ||||||
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| "github.com/layer5io/meshkit/utils" | ||||||
| "golang.org/x/exp/slices" | ||||||
| corev1 "k8s.io/api/core/v1" | ||||||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||||||
| "k8s.io/apimachinery/pkg/runtime/schema" | ||||||
| "k8s.io/client-go/dynamic" | ||||||
| ) | ||||||
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| var ( | ||||||
| namespace = "meshery" // Namespace for the Custom Resource | ||||||
| crName = "meshery-meshsync" // Name of the custom resource | ||||||
| version = "v1alpha1" // Version of the Custom Resource | ||||||
| group = "meshery.layer5.io" //Group for the Custom Resource | ||||||
| resource = "meshsyncs" //Name of the Resource | ||||||
| ) | ||||||
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| func GetMeshsyncCRDConfigs(dyClient dynamic.Interface) (*MeshsyncConfig, error) { | ||||||
| // initialize the group version resource to access the custom resource | ||||||
| gvr := schema.GroupVersionResource{Version: version, Group: group, Resource: resource} | ||||||
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| // make a call to get the custom resource | ||||||
| crd, err := dyClient.Resource(gvr).Namespace(namespace).Get(context.TODO(), crName, metav1.GetOptions{}) | ||||||
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||||||
| if err != nil { | ||||||
| return nil, ErrInitConfig(err) | ||||||
| } | ||||||
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| if crd == nil { | ||||||
| return nil, ErrInitConfig(errors.New("Custom Resource is nil")) | ||||||
| } | ||||||
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| spec := crd.Object["spec"] | ||||||
| specMap, ok := spec.(map[string]interface{}) | ||||||
| if !ok { | ||||||
| return nil, ErrInitConfig(errors.New("Unable to convert spec to map")) | ||||||
| } | ||||||
| configObj := specMap["watch-list"] | ||||||
| if configObj == nil { | ||||||
| return nil, ErrInitConfig(errors.New("Custom Resource does not have Meshsync Configs")) | ||||||
| } | ||||||
| configStr, err := utils.Marshal(configObj) | ||||||
| if err != nil { | ||||||
| return nil, ErrInitConfig(err) | ||||||
| } | ||||||
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| configMap := corev1.ConfigMap{} | ||||||
| err = utils.Unmarshal(string(configStr), &configMap) | ||||||
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| if err != nil { | ||||||
| return nil, ErrInitConfig(err) | ||||||
| } | ||||||
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| // populate the required configs | ||||||
| meshsyncConfig, err := PopulateConfigs(configMap) | ||||||
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| if err != nil { | ||||||
| return nil, ErrInitConfig(err) | ||||||
| } | ||||||
| return meshsyncConfig, nil | ||||||
| } | ||||||
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| // PopulateConfigs compares the default configs and the whitelist and blacklist | ||||||
| func PopulateConfigs(configMap corev1.ConfigMap) (*MeshsyncConfig, error) { | ||||||
| meshsyncConfig := &MeshsyncConfig{} | ||||||
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||||||
| if _, ok := configMap.Data["blacklist"]; ok { | ||||||
| if len(configMap.Data["blacklist"]) > 0 { | ||||||
| err := utils.Unmarshal(configMap.Data["blacklist"], &meshsyncConfig.BlackList) | ||||||
| if err != nil { | ||||||
| return nil, ErrInitConfig(err) | ||||||
| } | ||||||
| } | ||||||
| } | ||||||
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| if _, ok := configMap.Data["whitelist"]; ok { | ||||||
| if len(configMap.Data["whitelist"]) > 0 { | ||||||
| err := utils.Unmarshal(configMap.Data["whitelist"], &meshsyncConfig.WhiteList) | ||||||
| if err != nil { | ||||||
| return nil, ErrInitConfig(err) | ||||||
| } | ||||||
| } | ||||||
| } | ||||||
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| // ensure that atleast one of whitelist or blacklist has been supplied | ||||||
| if len(meshsyncConfig.BlackList) == 0 && len(meshsyncConfig.WhiteList) == 0 { | ||||||
| return nil, ErrInitConfig(errors.New("Both whitelisted and blacklisted resources missing")) | ||||||
| } | ||||||
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| // Handle global resources | ||||||
| globalPipelines := make(PipelineConfigs, 0) | ||||||
| localPipelines := make(PipelineConfigs, 0) | ||||||
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| if len(meshsyncConfig.WhiteList) != 0 { | ||||||
| for _, v := range Pipelines[GlobalResourceKey] { | ||||||
| if idx := slices.IndexFunc(meshsyncConfig.WhiteList, func(c ResourceConfig) bool { return c.Resource == v.Name }); idx != -1 { | ||||||
| config := meshsyncConfig.WhiteList[idx] | ||||||
| v.Events = config.Events | ||||||
| globalPipelines = append(globalPipelines, v) | ||||||
| } | ||||||
| } | ||||||
| if len(globalPipelines) > 0 { | ||||||
| meshsyncConfig.Pipelines = map[string]PipelineConfigs{} | ||||||
| meshsyncConfig.Pipelines[GlobalResourceKey] = globalPipelines | ||||||
| } | ||||||
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||||||
| // Handle local resources | ||||||
| for _, v := range Pipelines[LocalResourceKey] { | ||||||
| if idx := slices.IndexFunc(meshsyncConfig.WhiteList, func(c ResourceConfig) bool { return c.Resource == v.Name }); idx != -1 { | ||||||
| config := meshsyncConfig.WhiteList[idx] | ||||||
| v.Events = config.Events | ||||||
| localPipelines = append(localPipelines, v) | ||||||
| } | ||||||
| } | ||||||
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||||||
| if len(localPipelines) > 0 { | ||||||
| if meshsyncConfig.Pipelines == nil { | ||||||
| meshsyncConfig.Pipelines = make(map[string]PipelineConfigs) | ||||||
| } | ||||||
| meshsyncConfig.Pipelines[LocalResourceKey] = localPipelines | ||||||
| } | ||||||
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||||||
| // Handle listeners | ||||||
| listerners := make(ListenerConfigs, 0) | ||||||
| for _, v := range Listeners { | ||||||
| if idx := slices.IndexFunc(meshsyncConfig.WhiteList, func(c ResourceConfig) bool { return c.Resource == v.Name }); idx != -1 { | ||||||
| config := meshsyncConfig.WhiteList[idx] | ||||||
| v.Events = config.Events | ||||||
| listerners = append(listerners, v) | ||||||
| } | ||||||
| } | ||||||
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||||||
| if len(listerners) > 0 { | ||||||
| meshsyncConfig.Listeners = make(map[string]ListenerConfig) | ||||||
| meshsyncConfig.Listeners = Listeners | ||||||
| } | ||||||
| } else if len(meshsyncConfig.BlackList) != 0 { | ||||||
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||||||
| for _, v := range Pipelines[GlobalResourceKey] { | ||||||
| if idx := slices.IndexFunc(meshsyncConfig.BlackList, func(c string) bool { return c == v.Name }); idx == -1 { | ||||||
| v.Events = DefaultEvents | ||||||
| globalPipelines = append(globalPipelines, v) | ||||||
| } | ||||||
| } | ||||||
| if len(globalPipelines) > 0 { | ||||||
| meshsyncConfig.Pipelines = map[string]PipelineConfigs{} | ||||||
| meshsyncConfig.Pipelines[GlobalResourceKey] = globalPipelines | ||||||
| } | ||||||
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||||||
| // Handle local resources | ||||||
| for _, v := range Pipelines[LocalResourceKey] { | ||||||
| if idx := slices.IndexFunc(meshsyncConfig.BlackList, func(c string) bool { return c == v.Name }); idx == -1 { | ||||||
| v.Events = DefaultEvents | ||||||
| localPipelines = append(localPipelines, v) | ||||||
| } | ||||||
| } | ||||||
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||||||
| if len(localPipelines) > 0 { | ||||||
| if meshsyncConfig.Pipelines == nil { | ||||||
| meshsyncConfig.Pipelines = make(map[string]PipelineConfigs) | ||||||
| } | ||||||
| meshsyncConfig.Pipelines[LocalResourceKey] = localPipelines | ||||||
| } | ||||||
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||||||
| // Handle listeners | ||||||
| listerners := make(ListenerConfigs, 0) | ||||||
| for _, v := range Listeners { | ||||||
| if idx := slices.IndexFunc(meshsyncConfig.BlackList, func(c string) bool { return c == v.Name }); idx != -1 { | ||||||
|
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||||||
| v.Events = DefaultEvents | ||||||
| listerners = append(listerners, v) | ||||||
| } | ||||||
| } | ||||||
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| if len(listerners) > 0 { | ||||||
| meshsyncConfig.Listeners = make(map[string]ListenerConfig) | ||||||
| meshsyncConfig.Listeners = Listeners | ||||||
| } | ||||||
| } | ||||||
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||||||
| return meshsyncConfig, nil | ||||||
| } | ||||||
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Maybe you can import it rather than hard coded it https://github.com/meshery/meshery-operator/blob/master/api/v1alpha1/meshsync_types.go. Same like
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"There was a problem hiding this comment.
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I will update meshsync with this change immediately the meshery operator is approved with the CRD changes