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snapshots: Handle as separate components

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This commit is contained in:
Tom Wiesing 2022-10-02 18:17:47 +02:00
parent 698f04e13e
commit 3b112f1b8e
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27 changed files with 960 additions and 789 deletions
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38
internal/component/component.go
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@ -1,12 +1,6 @@
// Package component holds the main abstraction for components.
package component
import (
"reflect"
"github.com/FAU-CDI/wisski-distillery/pkg/lazy"
)
// Component represents a logical subsystem of the distillery.
// Every component must embed [ComponentBase] and should be initialized using [Initialize].
//
@ -36,35 +30,3 @@ type ComponentBase struct {
func (cb *ComponentBase) getBase() *ComponentBase {
return cb
}
// Initialize makes or returns a component based on a lazy.
//
// C is the type of component to initialize. It must be backed by a pointer, or Initialize will panic.
//
// dis is the distillery to initialize components for
// field is a pointer to the appropriate struct field within the distillery components
// init is called with a new non-nil component to initialize it.
// It may be nil, to indicate no additional initialization is required.
//
// makeComponent returns the new or existing component instance
func Initialize[C Component](core Core, field *lazy.Lazy[C], init func(C)) C {
// get the typeof C and make sure that it is a pointer type!
typC := reflect.TypeOf((*C)(nil)).Elem()
if typC.Kind() != reflect.Pointer {
panic("Initialize: C must be backed by a pointer")
}
// return the field
return field.Get(func() (c C) {
c = reflect.New(typC.Elem()).Interface().(C)
if init != nil {
init(c)
}
base := c.getBase()
base.Core = core
return
})
}