This replaces Packages() and BuildPackages() by returning a map of
package sets, the semantics of which is up to the distro to define.
They are meant to be depsolved and the result returned back as a
map to Manifest(), with the same keys.
No functional change.
Signed-off-by: Tom Gundersen <teg@jklm.no>
Imagine this situation: You have a RHEL system booted from an image produced
by osbuild-composer. On this system, you want to use osbuild-composer to
create another image of RHEL.
However, there's currently something funny with partitions:
All RHEL images built by osbuild-composer contain a root xfs partition. The
interesting bit is that they all share the same xfs partition UUID. This might
sound like a good thing for reproducibility but it has a quirk.
The issue appears when osbuild runs the qemu assembler: it needs to mount all
partitions of the future image to copy the OS tree into it.
Imagine that osbuild-composer is running on a system booted from an imaged
produced by osbuild-composer. This means that its root xfs partition has this
uuid:
efe8afea-c0a8-45dc-8e6e-499279f6fa5d
When osbuild-composer builds an image on this system, it runs osbuild that
runs the qemu assembler at some point. As I said previously, it will mount
all partitions of the future image. That means that it will also try to
mount the root xfs partition with this uuid:
efe8afea-c0a8-45dc-8e6e-499279f6fa5d
Do you remember this one? Yeah, it's the same one as before. However, the xfs
kernel driver doesn't like that. It contains a global table[1] of all xfs
partitions that forbids to mount 2 xfs partitions with the same uuid.
I mean... uuids are meant to be unique, right?
This commit changes the way we build RHEL 8.4 images: Each one now has a
unique uuid. It's now literally a unique universally unique identifier. haha
[1]: a349e4c659/fs/xfs/xfs_mount.c (L51)
Rather than Manifest() returning an osbuild.Manifest object, introduce a
new distro.Manifest object which represents it as an opaque, JSON
serializable object. This new type has the following properties:
1) its serialization is compatible with the input to osbuild,
2) any valid osbuild input can be deserialized into it, and
3) marshalling and unmarshaling to and from JSON is lossless.
This means that even as we change the subset of valid osbulid manifests
that we support, we can still load any previous state from disk, and it
will continue to work just as before, even though we can no longer
deserialize it into our internal notion of osbuild.Manifest.
This fixes the underlying problem of which #685 was a symptom.
Signed-off-by: Tom Gundersen <teg@jklm.no>
Any valid ImageBuild must contain a Manifest, so don't allow this to be
nil, simplifying the code a bit in the process.
Signed-off-by: Tom Gundersen <teg@jklm.no>
The store only serves the weldr API, and that hard-codes the assumption
of only one image build per compose all over the place. Move this
assumption into the json serialization handler.
Signed-off-by: Tom Gundersen <teg@jklm.no>
We may want to move this to the test_distro package in the future, but
calling it something else than its real name is just confusing.
Signed-off-by: Tom Gundersen <teg@jklm.no>
This reduces the amount of resolving and error checking we have to do.
This exposed a bug in weldr's ComposeEntry type, which will be fixed in
a follow-up commit.
Signed-off-by: Tom Gundersen <teg@jklm.no>
The types exposed by the compose package are only used in the store API,
so move them there where they belong.
Making the ownership of the types clear, rather than having them live in
a package for themselves, will make it clearer how the types can be
modified in follow-up commits.
Also remove the JSON annotations, as these types are no longer used for
serialization.
Signed-off-by: Tom Gundersen <teg@jklm.no>
Distinguish between the types used at runtimes and the types used for
(un)marshaling. Also make the types private to the store package.
This should allow us to reduce the interdependencies between the
packages and more easily change things without accidentally breaking
backwards compatibility.
Signed-off-by: Tom Gundersen <teg@jklm.no>
This way we can make more of the store fields and types private in
follow up commits.
This is not a functional change.
Signed-off-by: Tom Gundersen <teg@jklm.no>
