github.com/GoogleContainerTools/skaffold/v2@v2.13.2/pkg/diag/diag.go (about)

     1  /*
     2  Copyright 2020 The Skaffold Authors
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package diag
    18  
    19  import (
    20  	"context"
    21  	"fmt"
    22  
    23  	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    24  	"k8s.io/apimachinery/pkg/labels"
    25  
    26  	"github.com/GoogleContainerTools/skaffold/v2/pkg/diag/validator"
    27  )
    28  
    29  type Diagnose interface {
    30  	Run(ctx context.Context) ([]validator.Resource, error)
    31  	WithLabel(key, value string) Diagnose
    32  	WithValidators(v []validator.Validator) Diagnose
    33  }
    34  
    35  type diag struct {
    36  	namespaces []string
    37  	labels     map[string]string
    38  	validators []validator.Validator
    39  }
    40  
    41  func New(namespaces []string) Diagnose {
    42  	return &diag{
    43  		namespaces: namespaces,
    44  		labels:     map[string]string{},
    45  	}
    46  }
    47  
    48  func (d *diag) WithLabel(key, value string) Diagnose {
    49  	d.labels[key] = value
    50  	return d
    51  }
    52  
    53  func (d *diag) WithValidators(v []validator.Validator) Diagnose {
    54  	d.validators = v
    55  	return d
    56  }
    57  
    58  func (d *diag) Run(ctx context.Context) ([]validator.Resource, error) {
    59  	var (
    60  		res  []validator.Resource
    61  		errs []error
    62  	)
    63  	// get selector from labels
    64  	selector := labels.SelectorFromSet(d.labels)
    65  	listOptions := metav1.ListOptions{
    66  		LabelSelector: selector.String(),
    67  	}
    68  
    69  	for _, v := range d.validators {
    70  		for _, ns := range d.namespaces {
    71  			r, err := v.Validate(ctx, ns, listOptions)
    72  			res = append(res, r...)
    73  			if err != nil {
    74  				errs = append(errs, err)
    75  			}
    76  		}
    77  	}
    78  	if len(errs) == 0 {
    79  		return res, nil
    80  	}
    81  
    82  	errBuilder := ""
    83  	for _, err := range errs {
    84  		errBuilder = errBuilder + err.Error() + "\n"
    85  	}
    86  
    87  	return res, fmt.Errorf("following errors occurred %s", errBuilder)
    88  }