introduce podman machine

podman machine allows podman to create, manage, and interact with a vm
running some form of linux (default is fcos).  podman is then configured
to be able to interact with the vm automatically.

while this is usable on linux, the real push is to get this working on
both current apple architectures in macos.

Ashley Cui contributed to this PR and was a great help.

[NO TESTS NEEDED]

Signed-off-by: baude <bbaude@redhat.com>

1 files changed, 68 insertions, 0 deletions

diff --git a/pkg/machine/fcos_amd64.go b/pkg/machine/fcos_amd64.go
new file mode 100644
index 000000000..36676405a
--- /dev/null
+++ b/pkg/machine/fcos_amd64.go
@@ -0,0 +1,68 @@
+package machine
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+
+	"github.com/coreos/stream-metadata-go/fedoracoreos"
+	"github.com/coreos/stream-metadata-go/stream"
+	"github.com/sirupsen/logrus"
+)
+
+// This should get Exported and stay put as it will apply to all fcos downloads
+// getFCOS parses fedoraCoreOS's stream and returns the image download URL and the release version
+func getFCOSDownload() (*fcosDownloadInfo, error) {
+	var (
+		fcosstable stream.Stream
+	)
+	streamurl := fedoracoreos.GetStreamURL(fedoracoreos.StreamNext)
+	resp, err := http.Get(streamurl.String())
+	if err != nil {
+		return nil, err
+	}
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+	defer func() {
+		if err := resp.Body.Close(); err != nil {
+			logrus.Error(err)
+		}
+	}()
+
+	if err := json.Unmarshal(body, &fcosstable); err != nil {
+		return nil, err
+	}
+	arch, ok := fcosstable.Architectures[getFcosArch()]
+	if !ok {
+		return nil, fmt.Errorf("unable to pull VM image: no targetArch in stream")
+	}
+	artifacts := arch.Artifacts
+	if artifacts == nil {
+		return nil, fmt.Errorf("unable to pull VM image: no artifact in stream")
+	}
+	qemu, ok := artifacts[artifact]
+	if !ok {
+		return nil, fmt.Errorf("unable to pull VM image: no qemu artifact in stream")
+	}
+	formats := qemu.Formats
+	if formats == nil {
+		return nil, fmt.Errorf("unable to pull VM image: no formats in stream")
+	}
+	qcow, ok := formats[Format]
+	if !ok {
+		return nil, fmt.Errorf("unable to pull VM image: no qcow2.xz format in stream")
+	}
+	disk := qcow.Disk
+	if disk == nil {
+		return nil, fmt.Errorf("unable to pull VM image: no disk in stream")
+	}
+	return &fcosDownloadInfo{
+		Location:        disk.Location,
+		Release:         qemu.Release,
+		Sha256Sum:       disk.Sha256,
+		CompressionType: "xz",
+	}, nil
+}