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data_source_k8s_clusters.go
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data_source_k8s_clusters.go
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package ionoscloud
import (
"context"
"encoding/base64"
"fmt"
"github.com/hashicorp/terraform-plugin-sdk/v2/diag"
"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
"github.com/iancoleman/strcase"
"github.com/ionos-cloud/terraform-provider-ionoscloud/v6/internal/uuidgen"
"github.com/ionos-cloud/terraform-provider-ionoscloud/v6/services"
"github.com/ionos-cloud/terraform-provider-ionoscloud/v6/utils"
ionoscloud "github.com/ionos-cloud/sdk-go/v6"
)
func dataSourceK8sClusters() *schema.Resource {
return &schema.Resource{
ReadContext: dataSourceK8sReadClusters,
Schema: map[string]*schema.Schema{
"clusters": {
Type: schema.TypeList,
Description: "List of clusters which match the filtering criteria.",
Computed: true,
Elem: &schema.Resource{Schema: dataSourceK8sClusterSchema()},
},
"entries": {
Type: schema.TypeInt,
Computed: true,
},
"filter": dataSourceFiltersSchema(),
},
Timeouts: &resourceDefaultTimeouts,
}
}
func dataSourceK8sReadClusters(ctx context.Context, d *schema.ResourceData, meta any) diag.Diagnostics {
// strcase.ToLowerCamel doesn't produce the correct format for these keys, provide them directly (https://github.com/iancoleman/strcase/issues/51)
filterKeys := map[string]string{
"k8s_version": "k8sVersion",
}
client := meta.(services.SdkBundle).CloudApiClient
req := client.KubernetesApi.K8sGet(ctx).Depth(1)
filters, filtersOk := d.GetOk("filter")
if filtersOk {
for _, v := range filters.(*schema.Set).List() {
filter := v.(map[string]any)
key := filter["name"].(string)
value := filter["value"].(string)
key = strcase.ToLowerCamel(key)
if v, ok := filterKeys[key]; ok {
key = v
}
req.Filter(key, value)
}
}
clusters, apiResponse, err := req.Execute()
logApiRequestTime(apiResponse)
if err != nil {
return diag.FromErr(fmt.Errorf("an error occurred while fetching k8s clusters: %w", err))
}
if clusters.Items != nil && len(*clusters.Items) == 0 {
return diag.FromErr(fmt.Errorf("no clusters found"))
}
if err := setDataSourceK8sSetClusters(ctx, d, *clusters.Items, client); err != nil {
return diag.FromErr(err)
}
return nil
}
func setDataSourceK8sSetClusters(ctx context.Context, d *schema.ResourceData, clusters []ionoscloud.KubernetesCluster, client *ionoscloud.APIClient) error {
if d.Id() == "" {
d.SetId(uuidgen.ResourceUuid().String())
}
clusterList := make([]map[string]any, 0, len(clusters))
for _, c := range clusters {
clusterProperties, err := K8sClusterProperties(ctx, c, client)
if err != nil {
return err
}
clusterList = append(clusterList, clusterProperties)
}
if err := d.Set("clusters", clusterList); err != nil {
return err
}
if err := d.Set("entries", len(clusterList)); err != nil {
return err
}
return nil
}
// K8sClusterProperties returns a map equivalent of dataSourceK8sClusterSchema
func K8sClusterProperties(ctx context.Context, cluster ionoscloud.KubernetesCluster, client *ionoscloud.APIClient) (map[string]any, error) {
if cluster.Properties == nil {
clusterID := "nil"
if cluster.Id != nil {
clusterID = *cluster.Id
}
return nil, fmt.Errorf("cannot set data, Properties was nil for cluster: %s", clusterID)
}
clusterProperties := make(map[string]any)
utils.SetPropWithNilCheck(clusterProperties, "name", cluster.Properties.Name)
utils.SetPropWithNilCheck(clusterProperties, "k8s_version", cluster.Properties.K8sVersion)
utils.SetPropWithNilCheck(clusterProperties, "public", cluster.Properties.Public)
utils.SetPropWithNilCheck(clusterProperties, "location", cluster.Properties.Location)
utils.SetPropWithNilCheck(clusterProperties, "nat_gateway_ip", cluster.Properties.NatGatewayIp)
utils.SetPropWithNilCheck(clusterProperties, "node_subnet", cluster.Properties.NodeSubnet)
utils.SetPropWithNilCheck(clusterProperties, "viable_node_pool_versions", cluster.Properties.ViableNodePoolVersions)
if cluster.Properties.MaintenanceWindow != nil && cluster.Properties.MaintenanceWindow.Time != nil && cluster.Properties.MaintenanceWindow.DayOfTheWeek != nil {
clusterProperties["maintenance_window"] = []map[string]any{{"time": *cluster.Properties.MaintenanceWindow.Time, "day_of_the_week": *cluster.Properties.MaintenanceWindow.DayOfTheWeek}}
}
if cluster.Properties.S3Buckets != nil {
s3Buckets := make([]map[string]any, len(*cluster.Properties.S3Buckets))
for i, s3Bucket := range *cluster.Properties.S3Buckets {
s3Buckets[i] = map[string]any{"name": s3Bucket.Name}
}
clusterProperties["s3_buckets"] = s3Buckets
}
if cluster.Properties.AvailableUpgradeVersions != nil {
availableUpgradeVersions := make([]any, len(*cluster.Properties.AvailableUpgradeVersions))
for i, availableUpgradeVersion := range *cluster.Properties.AvailableUpgradeVersions {
availableUpgradeVersions[i] = availableUpgradeVersion
}
clusterProperties["available_upgrade_versions"] = availableUpgradeVersions
}
if cluster.Properties.ApiSubnetAllowList != nil {
apiSubnetAllowList := make([]any, len(*cluster.Properties.ApiSubnetAllowList))
for i, subnet := range *cluster.Properties.ApiSubnetAllowList {
apiSubnetAllowList[i] = subnet
}
clusterProperties["api_subnet_allow_list"] = apiSubnetAllowList
}
if cluster.Metadata != nil {
utils.SetPropWithNilCheck(clusterProperties, "state", cluster.Metadata.State)
}
if cluster.Id != nil {
// kubeconfig
clusterConfig, apiResponse, err := client.KubernetesApi.K8sKubeconfigGet(ctx, *cluster.Id).Execute()
logApiRequestTime(apiResponse)
if err != nil {
return nil, fmt.Errorf("an error occurred while fetching the kubernetes config for cluster with ID %s: %w", *cluster.Id, err)
}
clusterProperties["kube_config"] = clusterConfig
clusterConfigProperties, err := setKubeConfigData(clusterConfig)
if err != nil {
return nil, err
}
// node pools
clusterNodePools, apiResponse, err := client.KubernetesApi.K8sNodepoolsGet(ctx, *cluster.Id).Execute()
logApiRequestTime(apiResponse)
if err != nil {
return nil, fmt.Errorf("an error occurred while fetching the kubernetes cluster node pools for cluster with ID %s: %w", *cluster.Id, err)
}
if clusterNodePools.Items != nil && len(*clusterNodePools.Items) > 0 {
var nodePools []any
for _, nodePool := range *clusterNodePools.Items {
nodePools = append(nodePools, *nodePool.Id)
}
clusterProperties["node_pools"] = nodePools
}
clusterProperties = utils.MergeMaps(clusterProperties, clusterConfigProperties)
}
return clusterProperties, nil
}
func setKubeConfigData(clusterConfig string) (map[string]any, error) {
kubeConfig, err := parseClusterKubeconfig(clusterConfig)
if err != nil {
return nil, err
}
clusterProperties := make(map[string]any)
clusterConfigProperties := make(map[string]any)
clusterConfigProperties["api_version"] = kubeConfig.ApiVersion
clusterConfigProperties["current_context"] = kubeConfig.CurrentContext
clusterConfigProperties["kind"] = kubeConfig.Kind
// Managed K8s clusters each have their own unique kubeconfig so there is only 1 Clusters entry
if len(kubeConfig.Clusters) != 0 {
caData := kubeConfig.Clusters[0].Cluster.CaData
decodedCrt := make([]byte, base64.StdEncoding.DecodedLen(len(caData)))
if _, err := base64.StdEncoding.Decode(decodedCrt, []byte(caData)); err != nil {
return nil, err
}
clusterProperties["ca_crt"] = string(decodedCrt)
clusterProperties["server"] = kubeConfig.Clusters[0].Cluster.Server
clusterConfigProperties["clusters"] = []map[string]any{
{"name": kubeConfig.Clusters[0].Name, "cluster": map[string]string{"server": kubeConfig.Clusters[0].Cluster.Server, "certificate_authority_data": string(decodedCrt)}},
}
}
contexts := make([]map[string]any, len(kubeConfig.Contexts))
for i, contextVal := range kubeConfig.Contexts {
contexts[i] = map[string]any{
"name": contextVal.Name,
"context": map[string]string{
"cluster": contextVal.Context.Cluster,
"user": contextVal.Context.User,
},
}
}
clusterConfigProperties["contexts"] = contexts
users := make([]map[string]any, len(kubeConfig.Users))
userTokens := make(map[string]string)
for i, user := range kubeConfig.Users {
users[i] = map[string]any{
"name": user.Name,
"user": map[string]any{
"token": user.User.Token,
},
}
userTokens[user.Name] = user.User.Token
}
clusterConfigProperties["users"] = users
clusterProperties["config"] = []map[string]any{clusterConfigProperties}
clusterProperties["user_tokens"] = userTokens
return clusterProperties, nil
}