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Separate store configs from the implems

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Rework the `Store` hierarchy so that there's now one hierarchy for the
store configs and one for the implementations (where each implementation
extends the corresponding config). So a class hierarchy like

```
StoreConfig-------->Store
    |                 |
    v                 v
SubStoreConfig----->SubStore
    |                 |
    v                 v
SubSubStoreConfig-->SubSubStore
```

(with virtual inheritance to prevent DDD).

The advantage of this architecture is that we can now introspect the configuration of a store without having to instantiate the store itself
This commit is contained in:
regnat 2020-09-10 10:55:51 +02:00
parent aa4eac3788
commit 22afa8fb4d
13 changed files with 120 additions and 83 deletions
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2
src/libstore/store-api.cc
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@ -346,7 +346,7 @@ ValidPathInfo Store::addToStoreSlow(std::string_view name, const Path & srcPath,
Store::Store(const Params & params)
: Config(params)
: StoreConfig(params)
, state({(size_t) pathInfoCacheSize})
{
}