Applied cluster tags to nodepools, don't report this as a terraform change

internal/resources/ekscluster/data_source.go

@@ -144,6 +144,9 @@ func setResourceData(d *schema.ResourceData, eksCluster *eksmodel.VmwareTanzuMan
 	// see the explanation of this in the func doc of nodepoolPosMap
 	npPosMap := nodepoolPosMap(tfNodepools)
 
+	// get nodepool mapping of names with their details
+	npDataMap := nodepoolDetailsMap(tfNodepools)
+
 	nodepools := make([]*eksmodel.VmwareTanzuManageV1alpha1EksclusterNodepoolDefinition, len(tfNodepools))
 
 	for _, np := range remoteNodepools {
@@ -157,6 +160,8 @@ func setResourceData(d *schema.ResourceData, eksCluster *eksmodel.VmwareTanzuMan
 
 		if pos, ok := npPosMap[np.FullName.Name]; ok {
 			nodepools[pos] = npDef
+			// Add tf file nodepool tags as part of nodepool tags so that it will not show difference
+			nodepools[pos].Spec.Tags = npDataMap[np.FullName.Name].Spec.Tags
 		} else {
 			nodepools = append(nodepools, npDef)
 		}
@@ -191,3 +196,13 @@ func nodepoolPosMap(nps []*eksmodel.VmwareTanzuManageV1alpha1EksclusterNodepoolD
 
 	return ret
 }
+
+// Returns mapping of nodepool names to their corresponding details in the array.
+func nodepoolDetailsMap(nps []*eksmodel.VmwareTanzuManageV1alpha1EksclusterNodepoolDefinition) map[string]*eksmodel.VmwareTanzuManageV1alpha1EksclusterNodepoolDefinition {
+	ret := map[string]*eksmodel.VmwareTanzuManageV1alpha1EksclusterNodepoolDefinition{}
+	for _, np := range nps {
+		ret[np.Info.Name] = np
+	}
+
+	return ret
+}

internal/resources/ekscluster/helpers.go

@@ -193,3 +193,18 @@ func setEquality(s1, s2 []string) bool {
 
 	return true
 }
+
+func copyClusterTagsToNodepools(nodepoolTags map[string]string, eksTags map[string]string) map[string]string {
+	npTags := make(map[string]string)
+	if len(nodepoolTags) > 0 {
+		npTags = nodepoolTags
+	}
+
+	for tmcTag, tmcVal := range eksTags {
+		if _, ok := npTags[tmcTag]; !ok {
+			npTags[tmcTag] = tmcVal
+		}
+	}
+
+	return npTags
+}

internal/resources/ekscluster/resource_ekscluster.go

@@ -586,6 +586,10 @@ func resourceClusterCreate(ctx context.Context, d *schema.ResourceData, m interf
 
 	clusterFn := constructFullname(d)
 	clusterSpec, nps := constructEksClusterSpec(d)
+	// Copy tags from cluster to nodepool
+	for _, npDefData := range nps {
+		npDefData.Spec.Tags = copyClusterTagsToNodepools(npDefData.Spec.Tags, clusterSpec.Config.Tags)
+	}
 
 	clusterReq := &eksmodel.VmwareTanzuManageV1alpha1EksclusterCreateUpdateEksClusterRequest{
 		EksCluster: &eksmodel.VmwareTanzuManageV1alpha1EksclusterEksCluster{
@@ -676,6 +680,10 @@ func resourceClusterInPlaceUpdate(ctx context.Context, d *schema.ResourceData, m
 
 	clusterSpec, nodepools := constructEksClusterSpec(d)
 
+	// Copy tags from cluster to nodepool
+	for _, npDefData := range nodepools {
+		npDefData.Spec.Tags = copyClusterTagsToNodepools(npDefData.Spec.Tags, clusterSpec.Config.Tags)
+	}
 	// EKS cluster update API on TMC side ignores nodepools passed to it.
 	// The nodepools have to be updated via separate nodepool API, hence we
 	// deal with them separately.