Cleanup code

worker2/dag.go → worker2/dag/dag.go

@@ -1,4 +1,4 @@
-package worker2
+package dag
 
 import (
 	"fmt"
@@ -129,24 +129,24 @@ func newNodesTransitive[T any](transitiveGetter func(d *Node[T]) *nodesTransitiv
 	}
 }
 
-type DAGEvent interface {
+type Event interface {
 	dagEvent()
 }
 
-type DAGEventNewDep[T any] struct {
+type EventNewDep[T any] struct {
 	Node *Node[T]
 }
 
-func (d DAGEventNewDep[T]) dagEvent() {}
+func (d EventNewDep[T]) dagEvent() {}
 
-type DAGHook func(DAGEvent)
+type Hook func(Event)
 
 type Node[T any] struct {
 	V      T
 	ID     string
 	frozen atomic.Bool
 	m      sync.Mutex
-	hooks  []DAGHook
+	hooks  []Hook
 
 	Dependencies *nodesTransitive[T]
 	Dependees    *nodesTransitive[T]
@@ -169,7 +169,7 @@ func (d *Node[T]) GetID() string {
 	return d.ID
 }
 
-func (d *Node[T]) AddHook(hook DAGHook) {
+func (d *Node[T]) AddHook(hook Hook) {
 	d.m.Lock()
 	defer d.m.Unlock()
 
@@ -207,7 +207,7 @@ func (d *Node[T]) addDependency(dep *Node[T]) {
 			}
 
 			for _, hook := range d.hooks {
-				hook(DAGEventNewDep[T]{Node: dep})
+				hook(EventNewDep[T]{Node: dep})
 			}
 		}
 	}
@@ -242,19 +242,27 @@ func (d *Node[T]) IsFrozen() bool {
 	return d.frozen.Load()
 }
 
-// Freeze assumes the lock is already held
-func (d *Node[T]) Freeze() {
+// Freeze will lock, and run valid across all dependencies, return false to prevent locking
+func (d *Node[T]) Freeze(valid func(*Node[T]) bool) bool {
+	d.m.Lock() // prevent any deps modification
+	defer d.m.Unlock()
+
 	if d.frozen.Load() {
-		return
+		return true
 	}
 
-	for _, dep := range d.Dependencies.nodes.Slice() {
+	for _, dep := range d.Dependencies.Set().Slice() {
 		if !dep.IsFrozen() {
 			panic(fmt.Sprintf("attempting to freeze '%v' while all deps aren't frozen, '%v' isnt", d.ID, dep.ID))
 		}
+
+		if !valid(dep) {
+			return false
+		}
 	}
 
 	d.frozen.Store(true)
+	return true
 }
 
 func (d *Node[T]) DebugString() string {

worker2/dep.go

@@ -3,14 +3,15 @@ package worker2
 import (
 	"context"
 	"github.com/hephbuild/heph/utils/xtypes"
+	"github.com/hephbuild/heph/worker2/dag"
 	"sync"
 	"time"
 )
 
 type Dep interface {
 	GetName() string
 	Exec(ctx context.Context, ins InStore, outs OutStore) error
-	GetNode() *Node[Dep]
+	GetNode() *dag.Node[Dep]
 	AddDep(...Dep)
 	GetHooks() []Hook
 	AddHook(h Hook)
@@ -42,7 +43,7 @@ func newBase() baseDep {
 type baseDep struct {
 	execution *Execution
 	m         sync.RWMutex
-	node      *Node[Dep]
+	node      *dag.Node[Dep]
 	named     map[string]Dep
 	hooks     []Hook
 
@@ -56,7 +57,7 @@ func (a *baseDep) init() {
 	}
 }
 
-func (a *baseDep) GetNode() *Node[Dep] {
+func (a *baseDep) GetNode() *dag.Node[Dep] {
 	return a.node
 }
 
@@ -213,16 +214,6 @@ func (a *baseDep) GetHooks() []Hook {
 	return a.hooks[:]
 }
 
-type ActionConfig struct {
-	Ctx       context.Context
-	Name      string
-	Deps      []Dep
-	Hooks     []Hook
-	Scheduler Scheduler
-	Requests  map[string]float64
-	Do        func(ctx context.Context, ins InStore, outs OutStore) error
-}
-
 type Action struct {
 	baseDep
 	ctx       context.Context
@@ -266,11 +257,6 @@ func (a *Action) DeepDo(f func(Dep)) {
 	deepDo(a, f)
 }
 
-type GroupConfig struct {
-	Name string
-	Deps []Dep
-}
-
 type Group struct {
 	baseDep
 	name string

worker2/dep_action.go

@@ -1,16 +1,23 @@
 package worker2
 
-type EventDeclared struct {
-	Dep Dep
-}
+import (
+	"context"
+	"github.com/hephbuild/heph/worker2/dag"
+)
 
-func (EventDeclared) Replayable() bool {
-	return true
+type ActionConfig struct {
+	Ctx       context.Context
+	Name      string
+	Deps      []Dep
+	Hooks     []Hook
+	Scheduler Scheduler
+	Requests  map[string]float64
+	Do        func(ctx context.Context, ins InStore, outs OutStore) error
 }
 
 func NewAction(cfg ActionConfig) *Action {
 	a := &Action{baseDep: newBase()}
-	a.node = NewNode[Dep](cfg.Name, a)
+	a.node = dag.NewNode[Dep](cfg.Name, a)
 
 	a.name = cfg.Name
 	a.ctx = cfg.Ctx
@@ -30,9 +37,9 @@ func NewAction(cfg ActionConfig) *Action {
 		hook(EventDeclared{Dep: a})
 	}
 
-	a.node.AddHook(func(event DAGEvent) {
+	a.node.AddHook(func(event dag.Event) {
 		switch event := event.(type) {
-		case DAGEventNewDep[Dep]:
+		case dag.EventNewDep[Dep]:
 			for _, hook := range a.hooks {
 				hook(EventNewDep{Target: event.Node.V})
 			}

worker2/dep_group.go

@@ -1,5 +1,7 @@
 package worker2
 
+import "github.com/hephbuild/heph/worker2/dag"
+
 func NewGroup(deps ...Dep) *Group {
 	return NewNamedGroup("", deps...)
 }
@@ -8,16 +10,21 @@ func NewNamedGroup(name string, deps ...Dep) *Group {
 	return NewGroupWith(GroupConfig{Name: name, Deps: deps})
 }
 
+type GroupConfig struct {
+	Name string
+	Deps []Dep
+}
+
 func NewGroupWith(cfg GroupConfig) *Group {
 	g := &Group{baseDep: newBase()}
-	g.node = NewNode[Dep](cfg.Name, g)
+	g.node = dag.NewNode[Dep](cfg.Name, g)
 
 	g.name = cfg.Name
 	g.AddDep(cfg.Deps...)
 
-	g.node.AddHook(func(event DAGEvent) {
+	g.node.AddHook(func(event dag.Event) {
 		switch event := event.(type) {
-		case DAGEventNewDep[Dep]:
+		case dag.EventNewDep[Dep]:
 			for _, hook := range g.hooks {
 				hook(EventNewDep{Target: g, AddedDep: event.Node.V})
 			}

worker2/engine.go

@@ -7,6 +7,7 @@ import (
 	"github.com/hephbuild/heph/utils/sets"
 	"github.com/hephbuild/heph/utils/xcontext"
 	"github.com/hephbuild/heph/utils/xerrors"
+	"github.com/hephbuild/heph/worker2/dag"
 	"go.uber.org/multierr"
 	"runtime"
 	"sync"
@@ -146,22 +147,19 @@ func (e *Engine) waitForDeps(exec *Execution) error {
 	}
 }
 
-func (e *Engine) tryFreeze(depObj *Node[Dep]) (bool, error) {
-	depObj.m.Lock() // prevent any deps modification
-	defer depObj.m.Unlock()
-
+func (e *Engine) tryFreeze(depObj *dag.Node[Dep]) (bool, error) {
 	errs := sets.NewIdentitySet[error](0)
 
-	for _, dep := range depObj.Dependencies.Values() {
-		depExec := dep.getExecution()
+	frozen := depObj.Freeze(func(n *dag.Node[Dep]) bool {
+		depExec := n.V.getExecution()
 		if depExec == nil {
-			return false, nil
+			return false
 		}
 
 		state := depExec.State
 
 		if !state.IsFinal() {
-			return false, nil
+			return false
 		}
 
 		switch state {
@@ -183,15 +181,15 @@ func (e *Engine) tryFreeze(depObj *Node[Dep]) (bool, error) {
 				}
 			}
 		}
-	}
 
-	depObj.Freeze()
+		return true
+	})
 
-	if errs.Len() > 0 {
-		return true, multierr.Combine(errs.Slice()...)
+	if !frozen {
+		return false, nil
 	}
 
-	return true, nil
+	return true, multierr.Combine(errs.Slice()...)
 }
 
 func (e *Engine) waitForDepsAndSchedule(exec *Execution) {
@@ -368,7 +366,7 @@ func (e *Engine) registerOne(dep Dep, lock bool) *Execution {
 		eventsCh:    e.eventsCh,
 		completedCh: make(chan struct{}),
 		m:           m,
-		events:      make([]Event, 5),
+		events:      make([]Event, 0, 5),
 
 		// see field comments
 		errCh:  nil,

worker2/events.go

@@ -11,6 +11,14 @@ type EventWithExecution interface {
 	getExecution() *Execution
 }
 
+type EventDeclared struct {
+	Dep Dep
+}
+
+func (EventDeclared) Replayable() bool {
+	return true
+}
+
 type EventCompleted struct {
 	At        time.Time
 	Execution *Execution