registry.go

Documentation: github.com/chaos-mesh/chaos-mesh/pkg/selector/generic/registry

     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  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  //
    15  
    16  package registry
    17  
    18  import (
    19  	"github.com/pkg/errors"
    20  
    21  	"github.com/chaos-mesh/chaos-mesh/api/v1alpha1"
    22  	"github.com/chaos-mesh/chaos-mesh/pkg/selector/generic"
    23  )
    24  
    25  type Registry map[string]SelectorFactory
    26  
    27  // SelectorFactory is a function that builds a selector.
    28  type SelectorFactory = func(selector v1alpha1.GenericSelectorSpec, option generic.Option) (generic.Selector, error)
    29  
    30  func Parse(registry Registry, spec v1alpha1.GenericSelectorSpec, option generic.Option) (generic.SelectorChain, error) {
    31  	selectors := make([]generic.Selector, 0, len(registry))
    32  	for name, factory := range registry {
    33  		selector, err := factory(spec, option)
    34  		if err != nil {
    35  			return nil, errors.Errorf("cannot parse %s selector, msg: %+v", name, err)
    36  		}
    37  		selectors = append(selectors, selector)
    38  	}
    39  	return selectors, nil
    40  }
    41