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package leafnodes
import (
"fmt"
"github.com/onsi/ginkgo/internal/codelocation"
"github.com/onsi/ginkgo/internal/failer"
"github.com/onsi/ginkgo/types"
"reflect"
"time"
)
type runner struct {
isAsync bool
asyncFunc func(chan<- interface{})
syncFunc func()
codeLocation types.CodeLocation
timeoutThreshold time.Duration
nodeType types.SpecComponentType
componentIndex int
failer *failer.Failer
}
func newRunner(body interface{}, codeLocation types.CodeLocation, timeout time.Duration, failer *failer.Failer, nodeType types.SpecComponentType, componentIndex int) *runner {
bodyType := reflect.TypeOf(body)
if bodyType.Kind() != reflect.Func {
panic(fmt.Sprintf("Expected a function but got something else at %v", codeLocation))
}
runner := &runner{
codeLocation: codeLocation,
timeoutThreshold: timeout,
failer: failer,
nodeType: nodeType,
componentIndex: componentIndex,
}
switch bodyType.NumIn() {
case 0:
runner.syncFunc = body.(func())
return runner
case 1:
if !(bodyType.In(0).Kind() == reflect.Chan && bodyType.In(0).Elem().Kind() == reflect.Interface) {
panic(fmt.Sprintf("Must pass a Done channel to function at %v", codeLocation))
}
wrappedBody := func(done chan<- interface{}) {
bodyValue := reflect.ValueOf(body)
bodyValue.Call([]reflect.Value{reflect.ValueOf(done)})
}
runner.isAsync = true
runner.asyncFunc = wrappedBody
return runner
}
panic(fmt.Sprintf("Too many arguments to function at %v", codeLocation))
}
func (r *runner) run() (outcome types.SpecState, failure types.SpecFailure) {
if r.isAsync {
return r.runAsync()
} else {
return r.runSync()
}
}
func (r *runner) runAsync() (outcome types.SpecState, failure types.SpecFailure) {
done := make(chan interface{}, 1)
go func() {
finished := false
defer func() {
if e := recover(); e != nil || !finished {
r.failer.Panic(codelocation.New(2), e)
select {
case <-done:
break
default:
close(done)
}
}
}()
r.asyncFunc(done)
finished = true
}()
select {
case <-done:
case <-time.After(r.timeoutThreshold):
r.failer.Timeout(r.codeLocation)
}
failure, outcome = r.failer.Drain(r.nodeType, r.componentIndex, r.codeLocation)
return
}
func (r *runner) runSync() (outcome types.SpecState, failure types.SpecFailure) {
finished := false
defer func() {
if e := recover(); e != nil || !finished {
r.failer.Panic(codelocation.New(2), e)
}
failure, outcome = r.failer.Drain(r.nodeType, r.componentIndex, r.codeLocation)
}()
r.syncFunc()
finished = true
return
}
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