internal/boot: introduce package for booting images

The package takes the existing code from /cmd/osbuild-image-tests and
makes it available for other executables.

internal/boot/openstacktest/openstack.go

@@ -0,0 +1,133 @@
+// +build integration
+
+package openstacktest
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/gophercloud/gophercloud"
+	"github.com/gophercloud/gophercloud/openstack"
+	"github.com/gophercloud/gophercloud/openstack/imageservice/v2/images"
+	"github.com/gophercloud/gophercloud/openstack/imageservice/v2/imagedata"
+	"github.com/gophercloud/gophercloud/openstack/compute/v2/servers"
+)
+
+const WaitTimeout = 600 // in seconds
+
+func UploadImageToOpenStack(p *gophercloud.ProviderClient, imagePath string, imageName string) (*images.Image, error) {
+	client, err := openstack.NewImageServiceV2(p, gophercloud.EndpointOpts{
+		Region: os.Getenv("OS_REGION_NAME"),
+	})
+	if err != nil {
+		return nil, fmt.Errorf("Error creating ImageService client: %v", err)
+	}
+
+	// create a new image which gives us the ID
+	image, err := images.Create(client, images.CreateOpts{
+		Name: imageName,
+		DiskFormat: "qcow2",
+		ContainerFormat: "bare",
+	}).Extract()
+	if err != nil {
+		return image, fmt.Errorf("Creating image failed: %v", err)
+	}
+
+	// then upload the actual binary data
+	imageData, err := os.Open(imagePath)
+	if err != nil {
+		return image, fmt.Errorf("Error opening %s: %v", imagePath, err)
+	}
+	defer imageData.Close()
+
+	err = imagedata.Upload(client, image.ID, imageData).ExtractErr()
+	if err != nil {
+		return image, fmt.Errorf("Upload to OpenStack failed: %v", err)
+	}
+
+	// wait for the status to change from Queued to Active
+	err = gophercloud.WaitFor(WaitTimeout, func() (bool, error) {
+		actual, err := images.Get(client, image.ID).Extract()
+		return actual.Status == images.ImageStatusActive, err
+	})
+	if err != nil {
+		return image, fmt.Errorf("Waiting for image to become Active failed: %v", err)
+	}
+
+	return image, nil
+}
+
+func DeleteImageFromOpenStack(p *gophercloud.ProviderClient, imageUUID string) error {
+	client, err := openstack.NewImageServiceV2(p, gophercloud.EndpointOpts{
+		Region: os.Getenv("OS_REGION_NAME"),
+	})
+	if err != nil {
+		return fmt.Errorf("Error creating ImageService client: %v", err)
+	}
+
+	err = images.Delete(client, imageUUID).ExtractErr()
+	if err != nil {
+		return fmt.Errorf("cannot delete the image: %v", err)
+	}
+
+	return nil
+}
+
+func WithBootedImageInOpenStack(p *gophercloud.ProviderClient, imageID, userData string, f func(address string) error) (retErr error) {
+	client, err := openstack.NewComputeV2(p, gophercloud.EndpointOpts{
+		Region: os.Getenv("OS_REGION_NAME"),
+	})
+	if err != nil {
+		return fmt.Errorf("Error creating Compute client: %v", err)
+	}
+
+	server, err := servers.Create(client, servers.CreateOpts{
+		Name:      "osbuild-composer-vm-for-" + imageID,
+		FlavorRef: "77b8cf27-be16-40d9-95b1-81db4522be1e", // ci.m1.medium.ephemeral
+		Networks: []servers.Network{  // provider_net_cci_2
+			servers.Network{UUID: "74e8faa7-87ba-41b2-a000-438013194814"},
+		},
+		ImageRef:  imageID,
+		UserData: []byte(userData),
+	}).Extract()
+	if err != nil {
+		return fmt.Errorf("Cannot create instance: %v", err)
+	}
+
+	// cleanup
+	defer func(){
+		err := servers.ForceDelete(client, server.ID).ExtractErr()
+		if err != nil {
+			fmt.Printf("Force deleting instance %s failed: %v", server.ID, err)
+			return
+		}
+	}()
+
+	// wait for the status to become Active
+	err = servers.WaitForStatus(client, server.ID, "ACTIVE", WaitTimeout)
+	if err != nil {
+		return fmt.Errorf("Waiting for instance %s to become Active failed: %v", server.ID, err)
+	}
+
+	// get server details again to refresh the IP addresses
+	server, err = servers.Get(client, server.ID).Extract()
+	if err != nil {
+		return fmt.Errorf("Cannot get instance details: %v\n", err)
+	}
+
+	// server.AccessIPv4 is empty so list all addresses and
+	// get the first fixed one. ssh should be equally happy with v4 or v6
+	var fixedIP string
+	for _, networkAddresses := range server.Addresses["provider_net_cci_2"].([]interface{}) {
+		address := networkAddresses.(map[string]interface{})
+		if address["OS-EXT-IPS:type"] == "fixed" {
+			fixedIP = address["addr"].(string)
+			break
+		}
+	}
+	if fixedIP == "" {
+		return fmt.Errorf("Cannot find IP address for instance %s", server.ID)
+	}
+
+	return f(fixedIP)
+}