/
resource_parser.go
136 lines (121 loc) · 4.04 KB
/
resource_parser.go
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// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0
//go:generate go run internal/generate_resources.go
package iamutil
import (
"fmt"
"net/url"
"strings"
"github.com/hashicorp/go-gcp-common/gcputil"
)
const (
resourceParsingErrorTmpl = `invalid resource "%s": %v`
errorMultipleServices = `please provide a self-link or full resource name for non-service-unique resource type`
errorMultipleVersions = `please provide a self-link with version instead; multiple versions of this resource exist, all non-preferred`
)
// ResourceParser handles parsing resource ID and REST
// config from a given resource ID or name.
type ResourceParser interface {
Parse(string) (Resource, error)
}
// GeneratedResources implements ResourceParser - a value
// is generated using internal/generate_iam.go
type GeneratedResources map[string]map[string]map[string]RestResource
func getResourceFromVersions(rawName string, versionMap map[string]RestResource) (*RestResource, error) {
possibleVer := make([]string, 0, len(versionMap))
for v, config := range versionMap {
if config.IsPreferredVersion || len(versionMap) == 1 {
return &config, nil
}
if strings.Contains(v, "alpha") {
continue
}
if strings.Contains(v, "beta") {
continue
}
possibleVer = append(possibleVer, v)
}
if len(possibleVer) == 1 {
cfg := versionMap[possibleVer[0]]
return &cfg, nil
}
return nil, fmt.Errorf(resourceParsingErrorTmpl, rawName, errorMultipleVersions)
}
func (apis GeneratedResources) GetRestConfig(rawName string, fullName *gcputil.FullResourceName, prefix string) (*RestResource, error) {
relName := fullName.RelativeResourceName
if relName == nil {
return nil, fmt.Errorf(resourceParsingErrorTmpl, rawName, fmt.Errorf("relative name does not exist: %s", rawName))
}
serviceMap, ok := apis[relName.TypeKey]
if !ok {
return nil, fmt.Errorf(resourceParsingErrorTmpl, rawName, fmt.Errorf("unsupported resource type: %s", relName.TypeKey))
}
if len(prefix) > 0 {
for _, versionMap := range serviceMap {
for _, config := range versionMap {
if strings.HasPrefix(config.GetMethod.BaseURL+config.GetMethod.Path, prefix) {
return &config, nil
}
}
}
return nil, fmt.Errorf(resourceParsingErrorTmpl, rawName, fmt.Errorf("unsupported service/version for resource with prefix %s", prefix))
} else if len(fullName.Service) > 0 {
versionMap, ok := serviceMap[fullName.Service]
if !ok {
return nil, fmt.Errorf(resourceParsingErrorTmpl, rawName, fmt.Errorf("unsupported service %s for resource %s", fullName.Service, relName.TypeKey))
}
return getResourceFromVersions(rawName, versionMap)
} else if len(serviceMap) == 1 {
for _, versionMap := range serviceMap {
return getResourceFromVersions(rawName, versionMap)
}
}
return nil, fmt.Errorf(resourceParsingErrorTmpl, rawName, errorMultipleServices)
}
func (apis GeneratedResources) Parse(rawName string) (Resource, error) {
rUrl, err := url.Parse(rawName)
if err != nil {
return nil, fmt.Errorf(`resource "%s" is invalid URI`, rawName)
}
var relName *gcputil.RelativeResourceName
var prefix, service string
if rUrl.Scheme != "" {
selfLink, err := gcputil.ParseProjectResourceSelfLink(rawName)
if err != nil {
return nil, err
}
relName = selfLink.RelativeResourceName
prefix = selfLink.Prefix
} else if rUrl.Host != "" {
fullName, err := gcputil.ParseFullResourceName(rawName)
if err != nil {
return nil, err
}
relName = fullName.RelativeResourceName
service = fullName.Service
} else {
relName, err = gcputil.ParseRelativeName(rawName)
if err != nil {
return nil, err
}
}
if relName == nil {
return nil, fmt.Errorf(resourceParsingErrorTmpl, rawName, "nil relative name")
}
cfg, err := apis.GetRestConfig(
rawName,
&gcputil.FullResourceName{
Service: service,
RelativeResourceName: relName,
},
prefix)
if err != nil {
return nil, err
}
switch cfg.TypeKey {
case "projects/datasets":
return &DatasetResource{relativeId: relName, config: cfg}, nil
default:
return &IamResource{relativeId: relName, config: cfg}, nil
}
}