/
unique_resources.go
92 lines (74 loc) · 2.14 KB
/
unique_resources.go
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// Copyright 2024 The Carvel Authors.
// SPDX-License-Identifier: Apache-2.0
package resources
import (
"fmt"
"strings"
)
type UniqueResourceKey struct {
res Resource
customName string
}
func NewUniqueResourceKey(res Resource) UniqueResourceKey {
return UniqueResourceKey{res, ""}
}
func NewUniqueResourceKeyWithCustomName(res Resource, name string) UniqueResourceKey {
return UniqueResourceKey{res, name}
}
func (k UniqueResourceKey) String() string {
// version of the resource is not included since it will change over time
// TODO technically resource group can be changed (true uniqueness is via UID)
name := k.res.Name()
if len(k.customName) > 0 {
name = k.customName
}
return k.res.Namespace() + "/" + k.res.APIGroup() + "/" + k.res.Kind() + "/" + name
}
type UniqueResources struct {
resources []Resource
}
func NewUniqueResources(resources []Resource) UniqueResources {
return UniqueResources{resources}
}
func (r UniqueResources) Resources() ([]Resource, error) {
var result []Resource
var errs []error
uniqRs := map[string]Resource{}
for _, res := range r.resources {
resKey := NewUniqueResourceKey(res).String()
if uRes, found := uniqRs[resKey]; found {
// Check if duplicate resources are same
if !uRes.Equal(res) {
errs = append(errs, fmt.Errorf("Found resource '%s' multiple times with different content", res.Description()))
}
} else {
uniqRs[resKey] = res
result = append(result, res)
}
}
return result, r.combinedErr(errs)
}
func (r UniqueResources) Match(newResources []Resource) ([]Resource, error) {
var result []Resource
uniqRs := map[string]struct{}{}
for _, res := range newResources {
uniqRs[NewUniqueResourceKey(res).String()] = struct{}{}
}
for _, res := range r.resources {
resKey := NewUniqueResourceKey(res).String()
if _, found := uniqRs[resKey]; found {
result = append(result, res)
}
}
return result, nil
}
func (r UniqueResources) combinedErr(errs []error) error {
if len(errs) > 0 {
var msgs []string
for _, err := range errs {
msgs = append(msgs, "- "+err.Error())
}
return fmt.Errorf("Uniqueness errors:\n%s", strings.Join(msgs, "\n"))
}
return nil
}