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add initial LinodeCluster controller logic
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,137 @@ | ||
| package services | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "errors" | ||
| "fmt" | ||
| "github.com/go-logr/logr" | ||
| "github.com/linode/cluster-api-provider-linode/cloud/scope" | ||
| "github.com/linode/cluster-api-provider-linode/util" | ||
| "github.com/linode/linodego" | ||
| "net/http" | ||
| "strconv" | ||
| "strings" | ||
| ) | ||
|
|
||
| var ( | ||
| defaultLBPort = 6443 | ||
| ) | ||
|
|
||
| // CreateNodeBalancer creates a new NodeBalancer if one doesn't exist | ||
| func CreateNodeBalancer(ctx context.Context, clusterScope *scope.ClusterScope, logger logr.Logger) (*linodego.NodeBalancer, error) { | ||
| var linodeNBs []linodego.NodeBalancer | ||
| var linodeNB *linodego.NodeBalancer | ||
|
|
||
| tags := []string{string(clusterScope.LinodeCluster.UID)} | ||
| filter := map[string]string{ | ||
| "tags": strings.Join(tags, ","), | ||
| } | ||
|
|
||
| rawFilter, err := json.Marshal(filter) | ||
| if err != nil { | ||
|
|
||
| return nil, err | ||
| } | ||
| logger.Info("Creating NodeBalancer") | ||
| if linodeNBs, err = clusterScope.LinodeClient.ListNodeBalancers(ctx, linodego.NewListOptions(1, string(rawFilter))); err != nil { | ||
| logger.Info("Failed to list NodeBalancers", "error", err.Error()) | ||
|
|
||
| return nil, err | ||
| } | ||
|
|
||
| switch len(linodeNBs) { | ||
| case 1: | ||
| logger.Info(fmt.Sprintf("NodeBalancer %s already exists", *linodeNBs[0].Label)) | ||
|
|
||
| linodeNB = &linodeNBs[0] | ||
| case 0: | ||
| logger.Info(fmt.Sprintf("Creating NodeBalancer %s-api-server", clusterScope.LinodeCluster.Name)) | ||
| createConfig := linodego.NodeBalancerCreateOptions{ | ||
| Label: util.Pointer(fmt.Sprintf("%s-api-server", clusterScope.LinodeCluster.Name)), | ||
| Region: clusterScope.LinodeCluster.Spec.Region, | ||
| ClientConnThrottle: nil, | ||
| Tags: tags, | ||
| } | ||
|
|
||
| if linodeNB, err = clusterScope.LinodeClient.CreateNodeBalancer(ctx, createConfig); err != nil { | ||
| logger.Info("Failed to create Linode NodeBalancer", "error", err.Error()) | ||
|
|
||
| // Already exists is not an error | ||
| apiErr := linodego.Error{} | ||
| if errors.As(err, &apiErr) && apiErr.Code != http.StatusFound { | ||
| return nil, err | ||
| } | ||
|
|
||
| err = nil | ||
|
|
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| if linodeNB != nil { | ||
| logger.Info("Linode NodeBalancer already exists", "existing", linodeNB.Label) | ||
| } | ||
| } | ||
|
|
||
| default: | ||
| err = errors.New("multiple NodeBalancers") | ||
|
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| logger.Error(err, "Panic! Multiple NodeBalancers found. This might be a concurrency issue in the controller!!!", "filters", string(rawFilter)) | ||
|
|
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| return nil, err | ||
| } | ||
|
|
||
| if linodeNB == nil { | ||
| err = errors.New("missing NodeBalancer") | ||
|
|
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| logger.Error(err, "Panic! Failed to create NodeBalancer") | ||
|
|
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| return nil, err | ||
| } | ||
|
|
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| return linodeNB, nil | ||
| } | ||
|
|
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| // CreateNodeBalancerConfig creates NodeBalancer config if it does not exist | ||
| func CreateNodeBalancerConfig(ctx context.Context, clusterScope *scope.ClusterScope, logger logr.Logger) (*linodego.NodeBalancerConfig, error) { | ||
|
|
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| var linodeNBConfigs []linodego.NodeBalancerConfig | ||
| var linodeNBConfig *linodego.NodeBalancerConfig | ||
| var err error | ||
|
|
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| if linodeNBConfigs, err = clusterScope.LinodeClient.ListNodeBalancerConfigs(ctx, clusterScope.LinodeCluster.Spec.Network.NodeBalancerID, linodego.NewListOptions(1, "")); err != nil { | ||
| logger.Info("Failed to list NodeBalancer Configs", "error", err.Error()) | ||
|
|
||
| return nil, err | ||
| } | ||
| lbPort := defaultLBPort | ||
| if clusterScope.LinodeCluster.Spec.Network.LoadBalancerPort != 0 { | ||
| lbPort = clusterScope.LinodeCluster.Spec.Network.LoadBalancerPort | ||
| } | ||
| switch len(linodeNBConfigs) { | ||
| case 1: | ||
| logger.Info("NodeBalancer ", strconv.Itoa(linodeNBConfigs[0].ID), " already exists") | ||
| linodeNBConfig = &linodeNBConfigs[0] | ||
|
|
||
| case 0: | ||
| createConfig := linodego.NodeBalancerConfigCreateOptions{ | ||
| Port: lbPort, | ||
| Protocol: linodego.ProtocolTCP, | ||
| Algorithm: linodego.AlgorithmRoundRobin, | ||
| Check: linodego.CheckConnection, | ||
| } | ||
|
|
||
| if linodeNBConfig, err = clusterScope.LinodeClient.CreateNodeBalancerConfig(ctx, clusterScope.LinodeCluster.Spec.Network.NodeBalancerID, createConfig); err != nil { | ||
| logger.Info("Failed to create Linode NodeBalancer config", "error", err.Error()) | ||
|
|
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| return nil, err | ||
|
|
||
| } | ||
|
|
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| default: | ||
| err = errors.New("multiple NodeBalancer Configs") | ||
|
|
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| logger.Error(err, "Panic! Multiple NodeBalancer Configs found. This might be a concurrency issue in the controller!!!") | ||
|
|
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| return nil, err | ||
| } | ||
|
|
||
| return linodeNBConfig, nil | ||
| } |
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