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engine: Create a resource kind+name specific stateful store

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This adds a meta state store that is preserved between graph switches if
the kind and name match. This is useful so that rapid graph changes
don't necessarily reset their retry count if they've only changed one
resource field.
This commit is contained in:
James Shubin
2023-09-01 20:45:12 -04:00
parent 07bd8afc4a
commit 9545e409d4
7 changed files with 106 additions and 1 deletions
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12
lang/ast/structs.go
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@@ -939,6 +939,9 @@ func (obj *StmtRes) metaparams(res engine.Res) error {
// TODO: check that it doesn't overflow
meta.Burst = int(x)
case "reset":
meta.Reset = v.Bool() // must not panic
case "sema": // []string
values := []string{}
for _, x := range v.List() { // must not panic
@@ -1000,6 +1003,9 @@ func (obj *StmtRes) metaparams(res engine.Res) error {
// TODO: check that it doesn't overflow
meta.Burst = int(x)
}
if val, exists := v.Struct()["reset"]; exists {
meta.Reset = val.Bool() // must not panic
}
if val, exists := v.Struct()["sema"]; exists {
values := []string{}
for _, x := range val.List() { // must not panic
@@ -1594,6 +1600,7 @@ func (obj *StmtResMeta) Init(data *interfaces.Data) error {
case "poll":
case "limit":
case "burst":
case "reset":
case "sema":
case "rewatch":
case "realize":
@@ -1792,6 +1799,9 @@ func (obj *StmtResMeta) Unify(kind string) ([]interfaces.Invariant, error) {
case "burst":
invar = static(types.TypeInt)
case "reset":
invar = static(types.TypeBool)
case "sema":
invar = static(types.NewType("[]str"))
@@ -1827,7 +1837,7 @@ func (obj *StmtResMeta) Unify(kind string) ([]interfaces.Invariant, error) {
// FIXME: allow partial subsets of this struct, and in any order
// FIXME: we might need an updated unification engine to do this
wrap := func(reverse *types.Type) *types.Type {
return types.NewType(fmt.Sprintf("struct{noop bool; retry int; delay int; poll int; limit float; burst int; sema []str; rewatch bool; realize bool; reverse %s; autoedge bool; autogroup bool}", reverse.String()))
return types.NewType(fmt.Sprintf("struct{noop bool; retry int; delay int; poll int; limit float; burst int; reset bool; sema []str; rewatch bool; realize bool; reverse %s; autoedge bool; autogroup bool}", reverse.String()))
}
ors := []interfaces.Invariant{}
invarBool := static(wrap(types.TypeBool))