create outgoing requests to its own function

Signed-off-by: Jonathan A. Sternberg <jonathan.sternberg@docker.com>

solver/edge.go

@@ -779,27 +779,7 @@ func (e *edge) createInputRequests(desiredState edgeStatusType, f *pipeFactory,
 
 		// outgoing request is needed
 		if dep.state < desiredStateDep {
-			addNew := true
-			if dep.req != nil && !dep.req.Status().Completed {
-				if dep.req.Request().desiredState != desiredStateDep {
-					debugSchedulerCancelInputRequest(e, dep, desiredStateDep)
-					dep.req.Cancel()
-				} else {
-					debugSchedulerSkipInputRequestBasedOnExistingRequest(e, dep, desiredStateDep)
-					addNew = false
-				}
-			}
-			if addNew {
-				debugSchedulerAddInputRequest(e, dep, desiredStateDep)
-				req := f.NewInputRequest(e.edge.Vertex.Inputs()[int(dep.index)], &edgeRequest{
-					currentState: dep.edgeState,
-					desiredState: desiredStateDep,
-					currentKeys:  len(dep.keys),
-				})
-				e.depRequests[req] = dep
-				dep.req = req
-				addedNew = true
-			}
+			addedNew = e.createOutgoingRequest(dep, desiredStateDep, f) || addedNew
 		} else {
 			debugSchedulerSkipInputRequestBasedOnDepState(e, dep, desiredStateDep)
 		}
@@ -871,6 +851,27 @@ func (e *edge) desiredStateDep(dep *dep, desiredState edgeStatusType, force bool
 	return dep.state
 }
 
+func (e *edge) createOutgoingRequest(dep *dep, desiredStateDep edgeStatusType, f *pipeFactory) (addedNew bool) {
+	if dep.req != nil && !dep.req.Status().Completed {
+		if dep.req.Request().desiredState == desiredStateDep {
+			debugSchedulerSkipInputRequestBasedOnExistingRequest(e, dep, desiredStateDep)
+			return false
+		}
+		debugSchedulerCancelInputRequest(e, dep, desiredStateDep)
+		dep.req.Cancel()
+	}
+
+	debugSchedulerAddInputRequest(e, dep, desiredStateDep)
+	req := f.NewInputRequest(e.edge.Vertex.Inputs()[int(dep.index)], &edgeRequest{
+		currentState: dep.edgeState,
+		desiredState: desiredStateDep,
+		currentKeys:  len(dep.keys),
+	})
+	e.depRequests[req] = dep
+	dep.req = req
+	return true
+}
+
 // execIfPossible creates a request for getting the edge result if there is
 // enough state
 func (e *edge) execIfPossible(f *pipeFactory) bool {