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template_provider.go
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/
template_provider.go
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package cloudformation
import (
"github.com/awslabs/goformation/v7"
"github.com/pkg/errors"
"github.com/infracost/infracost/internal/config"
"github.com/infracost/infracost/internal/logging"
"github.com/infracost/infracost/internal/schema"
)
type TemplateProvider struct {
ctx *config.ProjectContext
Path string
includePastResources bool
}
func NewTemplateProvider(ctx *config.ProjectContext, includePastResources bool) schema.Provider {
return &TemplateProvider{
ctx: ctx,
Path: ctx.ProjectConfig.Path,
includePastResources: includePastResources,
}
}
func (p *TemplateProvider) ProjectName() string {
return config.CleanProjectName(p.ctx.ProjectConfig.Path)
}
func (p *TemplateProvider) VarFiles() []string {
return nil
}
func (p *TemplateProvider) Context() *config.ProjectContext { return p.ctx }
func (p *TemplateProvider) Type() string {
return "cloudformation"
}
func (p *TemplateProvider) DisplayType() string {
return "CloudFormation"
}
func (p *TemplateProvider) AddMetadata(metadata *schema.ProjectMetadata) {
metadata.ConfigSha = p.ctx.ProjectConfig.ConfigSha
}
func (p *TemplateProvider) RelativePath() string {
return p.ctx.ProjectConfig.Path
}
func (p *TemplateProvider) LoadResources(usage schema.UsageMap) ([]*schema.Project, error) {
template, err := goformation.Open(p.Path)
if err != nil {
return []*schema.Project{}, errors.Wrap(err, "Error reading CloudFormation template file")
}
logging.Logger.Debug().Msg("Extracting only cost-related params from cloudformation")
metadata := schema.DetectProjectMetadata(p.ctx.ProjectConfig.Path)
metadata.Type = p.Type()
p.AddMetadata(metadata)
name := p.ctx.ProjectConfig.Name
if name == "" {
name = metadata.GenerateProjectName(p.ctx.RunContext.VCSMetadata.Remote, p.ctx.RunContext.IsCloudEnabled())
}
project := schema.NewProject(name, metadata)
parser := NewParser(p.ctx, p.includePastResources)
parsed := parser.parseTemplate(template, usage)
if err != nil {
return []*schema.Project{project}, errors.Wrap(err, "Error parsing CloudFormation template file")
}
for _, item := range parsed {
project.PartialResources = append(project.PartialResources, item.PartialResource)
}
return []*schema.Project{project}, nil
}