Add resclient api for block volume

Signed-off-by: Poornima G <pgurusid@redhat.com>

Author: Poornima G

pkg/restclient/block_volume.go

@@ -0,0 +1,38 @@
+package restclient
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/gluster/glusterd2/plugins/blockvolume/api"
+)
+
+// BlockVolumeCreate creates Gluster Block Volume
+func (c *Client) BlockVolumeCreate(provider string, req api.BlockVolumeCreateRequest) (api.BlockVolumeCreateResp, error) {
+	var vol api.BlockVolumeCreateResp
+	err := c.post("v1/blockvolumes/"+provider, req, http.StatusCreated, &vol)
+	return vol, err
+}
+
+// BlockVolumeList lists Gluster Block Volumes
+func (c *Client) BlockVolumeList(provider string) (api.BlockVolumeListResp, error) {
+	//TODO: Are filters required?
+	var vols api.BlockVolumeListResp
+	url := fmt.Sprintf("/v1/blockvolumes/%s", provider)
+	err := c.get(url, nil, http.StatusOK, &vols)
+	return vols, err
+}
+
+// BlockVolumeGet gets Gluster Block Volume info
+func (c *Client) BlockVolumeGet(provider string, blockVolname string) (api.BlockVolumeGetResp, error) {
+	var vol api.BlockVolumeGetResp
+	url := fmt.Sprintf("/v1/blockvolumes/%s/%s", provider, blockVolname)
+	err := c.get(url, nil, http.StatusOK, &vol)
+	return vol, err
+}
+
+// BlockVolumeDelete deletes Gluster Block Volume
+func (c *Client) BlockVolumeDelete(provider string, blockVolname string) error {
+	url := fmt.Sprintf("/v1/blockvolumes/%s/%s", provider, blockVolname)
+	return c.del(url, nil, http.StatusNoContent, nil)
+}