| // Copyright Istio Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package framework |
| |
| import ( |
| "fmt" |
| "io" |
| "reflect" |
| "sync" |
| "time" |
| ) |
| |
| import ( |
| "github.com/hashicorp/go-multierror" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go-pixiu/pkg/test/framework/resource" |
| "github.com/apache/dubbo-go-pixiu/pkg/test/scopes" |
| ) |
| |
| // scope hold resources in a particular scope. |
| type scope struct { |
| // friendly name for the scope for debugging purposes. |
| id string |
| |
| parent *scope |
| |
| resources []resource.Resource |
| |
| closers []io.Closer |
| |
| children []*scope |
| |
| closeChan chan struct{} |
| |
| skipDump bool |
| |
| // Mutex to lock changes to resources, children, and closers that can be done concurrently |
| mu sync.Mutex |
| } |
| |
| func newScope(id string, p *scope) *scope { |
| s := &scope{ |
| id: id, |
| parent: p, |
| closeChan: make(chan struct{}, 1), |
| } |
| |
| if p != nil { |
| p.children = append(p.children, s) |
| } |
| |
| return s |
| } |
| |
| func (s *scope) add(r resource.Resource, id *resourceID) { |
| scopes.Framework.Debugf("Adding resource for tracking: %v", id) |
| s.mu.Lock() |
| defer s.mu.Unlock() |
| s.resources = append(s.resources, r) |
| |
| if c, ok := r.(io.Closer); ok { |
| s.closers = append(s.closers, c) |
| } |
| } |
| |
| func (s *scope) get(ref interface{}) error { |
| s.mu.Lock() |
| defer s.mu.Unlock() |
| |
| refVal := reflect.ValueOf(ref) |
| if refVal.Kind() != reflect.Ptr { |
| return fmt.Errorf("ref must be a pointer instead got: %T", ref) |
| } |
| // work with the underlying value rather than the pointer |
| refVal = refVal.Elem() |
| |
| targetT := refVal.Type() |
| if refVal.Kind() == reflect.Slice { |
| // for slices look at the element type |
| targetT = targetT.Elem() |
| } |
| |
| for _, res := range s.resources { |
| if res == nil { |
| continue |
| } |
| resVal := reflect.ValueOf(res) |
| if resVal.Type().AssignableTo(targetT) { |
| if refVal.Kind() == reflect.Slice { |
| refVal.Set(reflect.Append(refVal, resVal)) |
| } else { |
| refVal.Set(resVal) |
| return nil |
| } |
| } |
| } |
| |
| if s.parent != nil { |
| // either didn't find the value or need to continue filling the slice |
| return s.parent.get(ref) |
| } |
| |
| if refVal.Kind() != reflect.Slice { |
| // didn't find the non-slice value |
| return fmt.Errorf("no %v in context", targetT) |
| } |
| |
| return nil |
| } |
| |
| func (s *scope) addCloser(c io.Closer) { |
| s.mu.Lock() |
| defer s.mu.Unlock() |
| s.closers = append(s.closers, c) |
| } |
| |
| func (s *scope) done(nocleanup bool) error { |
| scopes.Framework.Debugf("Begin cleaning up scope: %v", s.id) |
| |
| // First, wait for all of the children to be done. |
| for _, c := range s.children { |
| c.waitForDone() |
| } |
| |
| // Upon returning, notify the parent that we're done. |
| defer func() { |
| close(s.closeChan) |
| }() |
| |
| var err error |
| // Do reverse walk for cleanup. |
| for i := len(s.closers) - 1; i >= 0; i-- { |
| c := s.closers[i] |
| |
| if nocleanup { |
| if cc, ok := c.(*closer); ok && cc.noskip { |
| continue |
| } else if !ok { |
| continue |
| } |
| } |
| |
| name := "lambda" |
| if r, ok := c.(resource.Resource); ok { |
| name = fmt.Sprintf("resource %v", r.ID()) |
| } |
| |
| scopes.Framework.Debugf("Begin cleaning up %s", name) |
| if e := c.Close(); e != nil { |
| scopes.Framework.Debugf("Error cleaning up %s: %v", name, e) |
| err = multierror.Append(err, e).ErrorOrNil() |
| } |
| scopes.Framework.Debugf("Cleanup complete for %s", name) |
| } |
| |
| s.mu.Lock() |
| s.resources = nil |
| s.closers = nil |
| s.mu.Unlock() |
| |
| scopes.Framework.Debugf("Done cleaning up scope: %v", s.id) |
| return err |
| } |
| |
| func (s *scope) waitForDone() { |
| <-s.closeChan |
| } |
| |
| func (s *scope) skipDumping() { |
| s.mu.Lock() |
| defer s.mu.Unlock() |
| s.skipDump = true |
| } |
| |
| func (s *scope) dump(ctx resource.Context, recursive bool) { |
| s.mu.Lock() |
| skip := s.skipDump |
| s.mu.Unlock() |
| if skip { |
| return |
| } |
| st := time.Now() |
| defer func() { |
| scopes.Framework.Debugf("Done dumping scope: %s (%v)", s.id, time.Since(st)) |
| }() |
| s.mu.Lock() |
| defer s.mu.Unlock() |
| if recursive { |
| for _, c := range s.children { |
| c.dump(ctx, recursive) |
| } |
| } |
| wg := sync.WaitGroup{} |
| for _, c := range s.resources { |
| if d, ok := c.(resource.Dumper); ok { |
| d := d |
| wg.Add(1) |
| go func() { |
| d.Dump(ctx) |
| wg.Done() |
| }() |
| } |
| } |
| wg.Wait() |
| } |