Composer does not have 1:1 mapping of what can be the Host Distro name
and the names of supported distributions held in the Distroregistry.
The fact that the host distro `Name()` method as passed to the Weldr API
does not return the same name as what is used as distro name for
repository definitions. This makes it hard to use `distro.Distro` and
`distro.Arch` directly and rely on the values returned by them as their
name.
Add `New*HostDistro()` to all distro definitions, accepting the name
that should be returned by the distro's `Name()` method. This is useful
mainly if the host distro is Beta or Stream variant of the distro.
Change the distroregistry.Registry to contain host distro as a separate
value set when creating it using `New()` function. This value is
returned by `Registry.FromHost()` method. Determining the host distro is
handled by the `NewDefault()` function. Move the distro name mangling to
distroregistry package. Add relevant unit tests.
Signed-off-by: Tomas Hozza <thozza@redhat.com>
fedoratest was yet another dummy distribution used by unit tests. After
the rework of test_distro, there is no reason to not use it as the only
distro implementation for testing purposes.
Remove fedoratest distro and replace it with test_distro in all affected
tests.
Signed-off-by: Tomas Hozza <thozza@redhat.com>
My goal is to add a method to distroregistry to return Registry with
all supported distributions. This way, all supported distributions
would be defined only on one place.
To achieve this, the Registry must live outside the distro package
because the distro implementation depends on it and this would create
a circular dependency unsupported by Go.
Signed-off-by: Ondřej Budai <ondrej@budai.cz>
Return errors from all distro's New() functions instead of logging and
returning nil. Also, return errors instead of panicking from
NewRegistry() and NewDefaultRegistry().
WithSingleDistro() doesn't follow go's naming convention for creating
objects (New*). Rename it to NewRegistry() and rename the old
NewRegistry() to NewDefaultRegistry().
The idea is that NewRegistry() can be used to create full Registry
objects from outside the package. NewDefaultRegistry() is a convenience
function that creates a Registry with all known distros.
The current `NewRegistry` implementation allows for nil values in the
map, but this leads to subtle bugs when using the registry. This patch
enforces non-nil values by introducing additional checks before we
insert the value into the map.
The change unfortunately breaks a lot of tests and therefore it is
necessary to create additional mock: distro.
The new mock is used instead of the previous "real" implementation,
which used to contain nil values.
