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testresource.go
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testresource.go
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/*
Copyright 2021 The Dapr 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 runner
import (
"context"
"errors"
"fmt"
"os"
"sync"
)
// Disposable is an interface representing the disposable test resources.
type Disposable interface {
Name() string
Init(ctx context.Context) error
Dispose(wait bool) error
}
// TestResources holds initial resources and active resources.
type TestResources struct {
resources []Disposable
resourcesLock sync.Mutex
activeResources []Disposable
activeResourcesLock sync.Mutex
ctx context.Context
cancel context.CancelFunc
}
// Add adds Disposable resource to resources queue.
func (r *TestResources) Add(dr Disposable) {
r.resourcesLock.Lock()
defer r.resourcesLock.Unlock()
r.resources = append(r.resources, dr)
}
// dequeueResource dequeues Disposable resource from resources queue.
func (r *TestResources) dequeueResource() Disposable {
r.resourcesLock.Lock()
defer r.resourcesLock.Unlock()
if len(r.resources) == 0 {
return nil
}
dr := r.resources[0]
r.resources = r.resources[1:]
return dr
}
// pushActiveResource pushes Disposable resource to ActiveResource stack.
func (r *TestResources) pushActiveResource(dr Disposable) {
r.activeResourcesLock.Lock()
defer r.activeResourcesLock.Unlock()
r.activeResources = append(r.activeResources, dr)
}
// popActiveResource pops Disposable resource from ActiveResource stack.
func (r *TestResources) popActiveResource() Disposable {
r.activeResourcesLock.Lock()
defer r.activeResourcesLock.Unlock()
if len(r.activeResources) == 0 {
return nil
}
dr := r.activeResources[len(r.activeResources)-1]
r.activeResources = r.activeResources[:len(r.activeResources)-1]
return dr
}
// FindActiveResource finds active resource by resource name.
func (r *TestResources) FindActiveResource(name string) Disposable {
for _, res := range r.activeResources {
if res.Name() == name {
return res
}
}
return nil
}
// Setup initializes the resources by calling Setup.
func (r *TestResources) setup() error {
r.ctx, r.cancel = context.WithCancel(context.Background())
resourceCount := 0
errs := make(chan error)
for {
dr := r.dequeueResource()
if dr == nil {
break
}
resourceCount++
go func() {
err := dr.Init(r.ctx)
r.pushActiveResource(dr)
errs <- err
}()
}
allErrs := make([]error, 0)
for i := 0; i < resourceCount; i++ {
err := <-errs
if err != nil {
allErrs = append(allErrs, err)
}
}
return errors.Join(allErrs...)
}
// TearDown initializes the resources by calling Dispose.
func (r *TestResources) tearDown() error {
resourceCount := 0
errs := make(chan error)
for {
dr := r.popActiveResource()
if dr == nil {
break
}
resourceCount++
go func() {
err := dr.Dispose(false)
if err != nil {
err = fmt.Errorf("failed to tear down %s. got: %w", dr.Name(), err)
}
errs <- err
}()
}
allErrs := make([]error, 0)
for i := 0; i < resourceCount; i++ {
err := <-errs
if err != nil {
os.Stderr.WriteString(err.Error() + "\n")
allErrs = append(allErrs, err)
}
}
if r.cancel != nil {
r.cancel()
r.cancel = nil
}
return errors.Join(allErrs...)
}