GetImageData

Author: James Fisher

openstack/imageservice/v2/fixtures.go

@@ -156,3 +156,14 @@ func HandlePutImageDataSuccessfully(t *testing.T) {
 	})
 }
 
+func HandleGetImageDataSuccessfully(t *testing.T) {
+	th.Mux.HandleFunc("/images/da3b75d9-3f4a-40e7-8a2c-bfab23927dea/file", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "GET")
+		th.TestHeader(t, r, "X-Auth-Token", fakeclient.TokenID)
+
+		w.WriteHeader(http.StatusOK)
+		
+		_, err := w.Write([]byte{34,87,0,23,23,23,56,255,254,0})
+		th.AssertNoErr(t, err)
+	})
+}

openstack/imageservice/v2/requests.go

@@ -1,6 +1,7 @@
 package v2
 
 import (
+	"net/http"
 	"io"
 
 	"github.com/rackspace/gophercloud"
@@ -194,4 +195,15 @@ func PutImageData(client *gophercloud.ServiceClient, id string, data io.ReadSeek
 	return res
 }
 
-// TODO func GetImageData
+func GetImageData(client *gophercloud.ServiceClient, id string) GetImageDataResult {
+	var res GetImageDataResult
+
+	var resp *http.Response
+	resp, res.Err = client.Get(imageDataURL(client, id), nil, &gophercloud.RequestOpts{
+		OkCodes: []int{200},
+	})
+
+	res.Body = resp.Body
+
+	return res
+}

openstack/imageservice/v2/requests_test.go

@@ -1,7 +1,10 @@
 package v2
 
 import (
+	"errors"
+	"fmt"
 	"io"
+	"io/ioutil"
 	"testing"
 
 	th "github.com/rackspace/gophercloud/testhelper"
@@ -210,7 +213,26 @@ func (rs *RS) Seek(offset int64, whence int) (int64, error) {
 		rs.offset = rs.offset + offsetInt
 	} else if whence == 2 {
 		rs.offset = len(rs.bs) - offsetInt
+	} else {
+		return 0, errors.New(fmt.Sprintf("For parameter `whence`, expected value in {0,1,2} but got: %#v", whence))
 	}
 
 	return int64(rs.offset), nil
 }
+
+func TestGetImageData(t *testing.T) {
+	th.SetupHTTP()
+	defer th.TeardownHTTP()
+
+	HandleGetImageDataSuccessfully(t)
+
+	rdr, err := GetImageData(fakeclient.ServiceClient(), "da3b75d9-3f4a-40e7-8a2c-bfab23927dea").Extract()
+	
+	th.AssertNoErr(t, err)
+
+	bs, err := ioutil.ReadAll(rdr)
+
+	th.AssertNoErr(t, err)
+
+	th.AssertByteArrayEquals(t, []byte{34,87,0,23,23,23,56,255,254,0}, bs)
+}

openstack/imageservice/v2/results.go

@@ -3,6 +3,7 @@ package v2
 import (
 	"errors"
 	"fmt"
+	"io"
 
 	"github.com/rackspace/gophercloud"
 	//"github.com/rackspace/gophercloud/pagination"
@@ -334,3 +335,15 @@ func (u UpdateResult) Extract() (*Image, error) {
 type PutImageDataResult struct {
 	gophercloud.ErrResult
 }
+
+type GetImageDataResult struct {
+	gophercloud.ErrResult
+}
+
+func (g GetImageDataResult) Extract() (io.Reader, error) {
+	if r, ok := g.Body.(io.Reader); ok {
+		return r, nil
+	} else {
+		return nil, errors.New(fmt.Sprintf("Expected io.Reader but got: %T(%#v)", g.Body))
+	}
+}