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reference_file.go
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/
reference_file.go
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package usage
import (
"strings"
"github.com/infracost/infracost"
"github.com/infracost/infracost/internal/schema"
"github.com/pkg/errors"
)
// ReferenceFile represents the reference example usage file
type ReferenceFile struct { // nolint:revive
*UsageFile
}
// LoadReferenceFile loads the reference example usage file
func LoadReferenceFile() (*ReferenceFile, error) {
contents := infracost.GetReferenceUsageFileContents()
if contents == nil {
return &ReferenceFile{}, errors.New("Could not find reference usage file")
}
usageFile, err := LoadUsageFileFromString(string(*contents))
if err != nil {
return &ReferenceFile{}, err
}
referenceFile := &ReferenceFile{
UsageFile: usageFile,
}
return referenceFile, nil
}
// SetDefaultValues updates the reference file to strip the values and set the default values
func (u *ReferenceFile) SetDefaultValues() {
for _, resourceUsage := range u.ResourceUsages {
for _, item := range resourceUsage.Items {
setUsageItemDefaultValues(item)
}
}
for _, resourceUsage := range u.ResourceTypeUsages {
for _, item := range resourceUsage.Items {
setUsageItemDefaultValues(item)
}
}
}
// FindMatchingResourceUsage returns the matching resource usage for the given resource name
// by looking for a resource with the same resource type
func (u *ReferenceFile) FindMatchingResourceUsage(name string) *ResourceUsage {
addrParts := strings.Split(name, ".")
if len(addrParts) < 2 {
return nil
}
wantResourceType := addrParts[len(addrParts)-2]
for _, resourceUsage := range u.ResourceUsages {
resourceType := strings.Split(resourceUsage.Name, ".")[0]
if resourceType == wantResourceType {
return resourceUsage
}
}
return nil
}
func (u *ReferenceFile) FindMatchingResourceTypeUsage(resourceType string) *ResourceUsage {
for _, resourceUsage := range u.ResourceTypeUsages {
if resourceUsage.Name == resourceType {
return resourceUsage
}
}
for _, resourceUsage := range u.ResourceUsages {
referenceResourceType := strings.Split(resourceUsage.Name, ".")[0]
if referenceResourceType == resourceType {
return resourceUsage
}
}
return nil
}
// setUsageItemDefaultValues recursively sets the default values for the given usage item
func setUsageItemDefaultValues(item *schema.UsageItem) {
if item == nil {
return
}
switch item.ValueType {
case schema.Float64:
item.DefaultValue = 0.0
case schema.Int64:
item.DefaultValue = 0
case schema.SubResourceUsage:
if item.Value != nil {
for _, subItem := range item.Value.(*ResourceUsage).Items {
setUsageItemDefaultValues(subItem)
}
}
item.DefaultValue = item.Value
default:
item.DefaultValue = item.Value
}
item.Value = nil
}