* internal/libs/patchstruct: add package for patching structpb
This adds a small helper package for patching *structpb.Struct values
using the same patterns that our APIs use for updating records. The
intent of this package is to provide a fallback mechanism for working
with these values when said record update behavior is unavailable, such
as when working with plugin-based host subtypes where the exact
structure of the subtype's attributes is unavailable.
patchstruct.Patch follows the following logic:
* The source (src) map is merged into the destination map (dst).
* Values are overwritten by the source map if they exist in both.
* Values are deleted from the destination if they are set to null in the
source.
* Maps are recursively applied, meaning that a nested map at key "foo" in
the destination would be patched with a map at key "foo" in the
source.
* A map in the destination is overwritten by a non-map in the source,
and a non-map in the destination is overwritten by a map in the
source.
Patch returns the updated map as a copy, dst and src are not altered.
* Add doc comment for patchstruct.Patch
* vim snafu
* Premature commit of repository_host_catalog.go
* add nil cases
* internal/libs/patchstruct: add PatchJSON
* small comment formatting fix
* Change PatchJSON to PatchBytes
PatchJSON wasn't what was needed here - we need a helper to patch the
protobuf encoding of structpb.Struct.
* remove equality for original src/dst for patchbytes
Chris Marchesi
86f2535aaf