added GetClusters function

ipam.go

@@ -5,6 +5,7 @@ import (
 
 	e "git.stinnesbeck.com/nils/errorhandler"
 	"github.com/netbox-community/go-netbox/v3/netbox/client/ipam"
+	"github.com/netbox-community/go-netbox/v3/netbox/client/virtualization"
 	"github.com/netbox-community/go-netbox/v3/netbox/models"
 )
 
@@ -36,7 +37,7 @@ func (nb NetBoxAPI) GetPrefixes(param ipam.IpamPrefixesListParams) ([]*models.Pr
 
 	// check if there are more prefixes on other pages
 	if prefixes.Payload.Next == nil {
-    // return the results of the first batch, there are no others
+		// return the results of the first batch, there are no others
 		return prefixes.Payload.Results, nil
 	}
 
@@ -113,3 +114,56 @@ func (nb NetBoxAPI) GetIPAddresses(param ipam.IpamIPAddressesListParams) ([]*mod
 	// return all addresses
 	return addresses.Payload.Results, nil
 }
+
+// GetClusters returns Clusters from the api filtered by the parameter list param
+func (nb NetBoxAPI) GetClusters(param virtualization.VirtualizationClustersListParams) ([]*models.Cluster, error) {
+	// check if context was set, if not set background
+	if param.Context == nil {
+		param.Context = context.Background()
+	}
+
+	var defaultOffset int64
+	var defaultLimit int64 = 50
+
+	// set Offset if not set before
+	if param.Limit == nil {
+		param.Limit = &defaultLimit
+	}
+
+	// set Offset if not set before
+	if param.Offset == nil {
+		param.Offset = &defaultOffset
+	}
+
+	// get clusters
+	clusters, err := nb.API.Virtualization.VirtualizationClustersList(&param, nil)
+	if err != nil {
+		return nil, e.FormatError("can't get clusters", err)
+	}
+
+	// check if there are more prefixes on other pages
+	if clusters.Payload.Next == nil {
+		// return the results of the first batch, there are no others
+		return clusters.Payload.Results, nil
+	}
+
+	// there are more pages to get
+
+	// calculate new offset
+	newOffset := *param.Offset + *param.Limit
+
+	// set new offset
+	param.Offset = &newOffset
+
+	// get prefixes from next page
+	nextPagePrefixes, err := nb.GetClusters(param)
+	if err != nil {
+		return nil, e.FormatError("can't get prefixes", err)
+	}
+
+	// append the results from next page to our prefixes to return
+	clusters.Payload.Results = append(clusters.Payload.Results, nextPagePrefixes...)
+
+	// return all prefixes
+	return clusters.Payload.Results, nil
+}