pin: fix a too aggressive refactor and connect some contexts

pin/pin.go

@@ -281,7 +281,9 @@ func (p *pinner) isInternalPin(c cid.Cid) bool {
 // IsPinned returns whether or not the given key is pinned
 // and an explanation of why its pinned
 func (p *pinner) IsPinned(ctx context.Context, c cid.Cid) (string, bool, error) {
-	return p.isPinnedWithType(c, Any)
+	p.lock.RLock()
+	defer p.lock.RUnlock()
+	return p.isPinnedWithType(ctx, c, Any)
 }
 
 // IsPinnedWithType returns whether or not the given cid is pinned with the
@@ -289,12 +291,12 @@ func (p *pinner) IsPinned(ctx context.Context, c cid.Cid) (string, bool, error)
 func (p *pinner) IsPinnedWithType(ctx context.Context, c cid.Cid, mode Mode) (string, bool, error) {
 	p.lock.RLock()
 	defer p.lock.RUnlock()
-	return p.isPinnedWithType(c, mode)
+	return p.isPinnedWithType(ctx, c, mode)
 }
 
 // isPinnedWithType is the implementation of IsPinnedWithType that does not lock.
 // intended for use by other pinned methods that already take locks
-func (p *pinner) isPinnedWithType(c cid.Cid, mode Mode) (string, bool, error) {
+func (p *pinner) isPinnedWithType(ctx context.Context, c cid.Cid, mode Mode) (string, bool, error) {
 	switch mode {
 	case Any, Direct, Indirect, Recursive, Internal:
 	default:
@@ -326,7 +328,7 @@ func (p *pinner) isPinnedWithType(c cid.Cid, mode Mode) (string, bool, error) {
 	// Default is Indirect
 	visitedSet := cid.NewSet()
 	for _, rc := range p.recursePin.Keys() {
-		has, err := hasChild(p.dserv, rc, c, visitedSet.Visit)
+		has, err := hasChild(ctx, p.dserv, rc, c, visitedSet.Visit)
 		if err != nil {
 			return "", false, err
 		}
@@ -361,7 +363,7 @@ func (p *pinner) CheckIfPinned(ctx context.Context, cids ...cid.Cid) ([]Pinned,
 	// Now walk all recursive pins to check for indirect pins
 	var checkChildren func(cid.Cid, cid.Cid) error
 	checkChildren = func(rk, parentKey cid.Cid) error {
-		links, err := ipld.GetLinks(context.TODO(), p.dserv, parentKey)
+		links, err := ipld.GetLinks(ctx, p.dserv, parentKey)
 		if err != nil {
 			return err
 		}
@@ -607,8 +609,8 @@ func (p *pinner) PinWithMode(c cid.Cid, mode Mode) {
 
 // hasChild recursively looks for a Cid among the children of a root Cid.
 // The visit function can be used to shortcut already-visited branches.
-func hasChild(ng ipld.NodeGetter, root cid.Cid, child cid.Cid, visit func(cid.Cid) bool) (bool, error) {
-	links, err := ipld.GetLinks(context.TODO(), ng, root)
+func hasChild(ctx context.Context, ng ipld.NodeGetter, root cid.Cid, child cid.Cid, visit func(cid.Cid) bool) (bool, error) {
+	links, err := ipld.GetLinks(ctx, ng, root)
 	if err != nil {
 		return false, err
 	}
@@ -618,7 +620,7 @@ func hasChild(ng ipld.NodeGetter, root cid.Cid, child cid.Cid, visit func(cid.Ci
 			return true, nil
 		}
 		if visit(c) {
-			has, err := hasChild(ng, c, child, visit)
+			has, err := hasChild(ctx, ng, c, child, visit)
 			if err != nil {
 				return false, err
 			}