workflow_collector.go

Documentation: github.com/chaos-mesh/chaos-mesh/pkg/collector

     1  // Copyright 2021 Chaos Mesh Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package collector
    15  
    16  import (
    17  	"context"
    18  
    19  	"github.com/go-logr/logr"
    20  	"github.com/jinzhu/gorm"
    21  	apierrors "k8s.io/apimachinery/pkg/api/errors"
    22  	"k8s.io/apimachinery/pkg/runtime"
    23  	ctrl "sigs.k8s.io/controller-runtime"
    24  	"sigs.k8s.io/controller-runtime/pkg/client"
    25  	"sigs.k8s.io/controller-runtime/pkg/reconcile"
    26  
    27  	"github.com/chaos-mesh/chaos-mesh/api/v1alpha1"
    28  	"github.com/chaos-mesh/chaos-mesh/pkg/core"
    29  )
    30  
    31  type WorkflowCollector struct {
    32  	kubeClient client.Client
    33  	Log        logr.Logger
    34  	apiType    runtime.Object
    35  	store      core.WorkflowStore
    36  }
    37  
    38  func (it *WorkflowCollector) Setup(mgr ctrl.Manager, apiType runtime.Object) error {
    39  	it.apiType = apiType
    40  
    41  	return ctrl.NewControllerManagedBy(mgr).
    42  		For(apiType).
    43  		Complete(it)
    44  }
    45  
    46  func (it *WorkflowCollector) Reconcile(request reconcile.Request) (reconcile.Result, error) {
    47  	if it.apiType == nil {
    48  		it.Log.Error(nil, "apiType has not been initialized")
    49  		return ctrl.Result{}, nil
    50  	}
    51  	ctx := context.Background()
    52  	workflow := v1alpha1.Workflow{}
    53  	err := it.kubeClient.Get(ctx, request.NamespacedName, &workflow)
    54  	if apierrors.IsNotFound(err) {
    55  		// target
    56  		if err = it.markAsArchived(ctx, request.Namespace, request.Name); err != nil {
    57  			it.Log.Error(err, "failed to archive experiment")
    58  		}
    59  		return ctrl.Result{}, nil
    60  	}
    61  	if err != nil {
    62  		it.Log.Error(err, "failed to get workflow object", "request", request.NamespacedName)
    63  		return ctrl.Result{}, nil
    64  	}
    65  
    66  	if err := it.persistentWorkflow(&workflow); err != nil {
    67  		it.Log.Error(err, "failed to archive workflow")
    68  	}
    69  
    70  	return ctrl.Result{}, nil
    71  }
    72  
    73  func (it *WorkflowCollector) markAsArchived(ctx context.Context, namespace, name string) error {
    74  	return it.store.MarkAsArchived(ctx, namespace, name)
    75  }
    76  
    77  func (it *WorkflowCollector) persistentWorkflow(workflow *v1alpha1.Workflow) error {
    78  	newEntity, err := core.WorkflowCR2WorkflowEntity(workflow)
    79  	if err != nil {
    80  		return err
    81  	}
    82  
    83  	existedEntity, err := it.store.FindByUID(context.Background(), string(workflow.UID))
    84  	if err != nil && !gorm.IsRecordNotFoundError(err) {
    85  		it.Log.Error(err, "failed to find workflow", "UID", workflow.UID)
    86  		return err
    87  	}
    88  
    89  	if existedEntity != nil {
    90  		newEntity.ID = existedEntity.ID
    91  	}
    92  
    93  	err = it.store.Save(context.Background(), newEntity)
    94  	if err != nil {
    95  		it.Log.Error(err, "failed to update workflow", "archive", newEntity)
    96  	}
    97  	return err
    98  }
    99