pub struct PatchDef {
pub models: BTreeMap<String, Value>,
}Expand description
Field-wise catalog patches applied on top of merged model rows.
Overlays have three complementary tools for adjusting the baseline catalog, from coarsest to finest:
- Whole-row replace —
[models.<id>]replaces the entire model row. Use it to add a new route or when the overlay intentionally owns every field of the row. - Field patch —
[patch.models.<id>]merges individual fields into the existing row, leaving every unmentioned field at its baseline value. Use it to tweak one knob (astream_timeout, one pricing rate) without copying the row verbatim and silently freezing the rest of its fields against upstream catalog updates. - Route suppression —
[suppress]hides baseline routes from the exported/served artifact entirely (seeSuppressDef).
Patch semantics:
- Nested tables merge recursively; scalars and arrays replace the base value wholesale (there is deliberately no per-element array merge).
- Within a single overlay,
[models.<id>]whole-row replacement applies BEFORE[patch.models.<id>], so patch fields win over the same overlay’s whole-row fields. - Patches are STICKY across layers: once accumulated, a patch re-applies after every later layer’s merge, including a later layer’s whole-row replacement of the same id. A patch means “always tweak this field”, not “tweak it once”.
- A patch whose target row does not exist yet stays in the accumulator
silently and applies as soon as a later layer contributes the row;
ProvidersConfig::dangling_model_patchesreports the leftovers for doctor/export validation. - A patch that produces a type-invalid row warns once per process and keeps the unpatched row.
Fields§
§models: BTreeMap<String, Value>[patch.models.<id>] tables: partial ModelDef field sets merged
field-wise into the model row with the same catalog id.
Trait Implementations§
Source§impl<'de> Deserialize<'de> for PatchDef
impl<'de> Deserialize<'de> for PatchDef
Source§fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,
impl StructuralPartialEq for PatchDef
Auto Trait Implementations§
impl Freeze for PatchDef
impl RefUnwindSafe for PatchDef
impl Send for PatchDef
impl Sync for PatchDef
impl Unpin for PatchDef
impl UnsafeUnpin for PatchDef
impl UnwindSafe for PatchDef
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