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, 47 insertions, 0 deletions

diff --git a/vendor/github.com/coreos/stream-metadata-go/stream/stream_utils.go b/vendor/github.com/coreos/stream-metadata-go/stream/stream_utils.go
new file mode 100644
index 000000000..ffd779c58
--- /dev/null
+++ b/vendor/github.com/coreos/stream-metadata-go/stream/stream_utils.go
@@ -0,0 +1,47 @@
+package stream
+
+import "fmt"
+
+// FormatPrefix describes a stream+architecture combination, intended for prepending to error messages
+func (st *Stream) FormatPrefix(archname string) string {
+	return fmt.Sprintf("%s/%s", st.Stream, archname)
+}
+
+// GetArchitecture loads the architecture-specific builds from a stream,
+// with a useful descriptive error message if the architecture is not found.
+func (st *Stream) GetArchitecture(archname string) (*Arch, error) {
+	archdata, ok := st.Architectures[archname]
+	if !ok {
+		return nil, fmt.Errorf("stream:%s does not have architecture '%s'", st.Stream, archname)
+	}
+	return &archdata, nil
+}
+
+// GetAwsRegionImage returns the release data (AMI and release ID) for a particular
+// architecture and region.
+func (st *Stream) GetAwsRegionImage(archname, region string) (*AwsRegionImage, error) {
+	starch, err := st.GetArchitecture(archname)
+	if err != nil {
+		return nil, err
+	}
+	awsimages := starch.Images.Aws
+	if awsimages == nil {
+		return nil, fmt.Errorf("%s: No AWS images", st.FormatPrefix(archname))
+	}
+	var regionVal AwsRegionImage
+	var ok bool
+	if regionVal, ok = awsimages.Regions[region]; !ok {
+		return nil, fmt.Errorf("%s: No AWS images in region %s", st.FormatPrefix(archname), region)
+	}
+
+	return &regionVal, nil
+}
+
+// GetAMI returns the AWS machine image for a particular architecture and region.
+func (st *Stream) GetAMI(archname, region string) (string, error) {
+	regionVal, err := st.GetAwsRegionImage(archname, region)
+	if err != nil {
+		return "", err
+	}
+	return regionVal.Image, nil
+}