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iam_bigquery_dataset.go
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iam_bigquery_dataset.go
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package google
import (
"errors"
"fmt"
"strings"
"github.com/hashicorp/errwrap"
"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
"google.golang.org/api/cloudresourcemanager/v1"
)
var IamBigqueryDatasetSchema = map[string]*schema.Schema{
"dataset_id": {
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"project": {
Type: schema.TypeString,
Optional: true,
Computed: true,
ForceNew: true,
},
}
var bigqueryAccessPrimitiveToRoleMap = map[string]string{
"OWNER": "roles/bigquery.dataOwner",
"WRITER": "roles/bigquery.dataEditor",
"READER": "roles/bigquery.dataViewer",
}
type BigqueryDatasetIamUpdater struct {
project string
datasetId string
d TerraformResourceData
Config *Config
}
func NewBigqueryDatasetIamUpdater(d TerraformResourceData, config *Config) (ResourceIamUpdater, error) {
project, err := getProject(d, config)
if err != nil {
return nil, err
}
if err := d.Set("project", project); err != nil {
return nil, fmt.Errorf("Error setting project: %s", err)
}
return &BigqueryDatasetIamUpdater{
project: project,
datasetId: d.Get("dataset_id").(string),
d: d,
Config: config,
}, nil
}
func BigqueryDatasetIdParseFunc(d *schema.ResourceData, config *Config) error {
fv, err := parseProjectFieldValue("datasets", d.Id(), "project", d, config, false)
if err != nil {
return err
}
if err := d.Set("project", fv.Project); err != nil {
return fmt.Errorf("Error setting project: %s", err)
}
if err := d.Set("dataset_id", fv.Name); err != nil {
return fmt.Errorf("Error setting dataset_id: %s", err)
}
// Explicitly set the id so imported resources have the same ID format as non-imported ones.
d.SetId(fv.RelativeLink())
return nil
}
func (u *BigqueryDatasetIamUpdater) GetResourceIamPolicy() (*cloudresourcemanager.Policy, error) {
url := fmt.Sprintf("%s%s", u.Config.BigQueryBasePath, u.GetResourceId())
userAgent, err := generateUserAgentString(u.d, u.Config.userAgent)
if err != nil {
return nil, err
}
res, err := sendRequest(u.Config, "GET", u.project, url, userAgent, nil)
if err != nil {
return nil, errwrap.Wrapf(fmt.Sprintf("Error retrieving IAM policy for %s: {{err}}", u.DescribeResource()), err)
}
policy, err := accessToPolicy(res["access"])
if err != nil {
return nil, err
}
return policy, nil
}
func (u *BigqueryDatasetIamUpdater) SetResourceIamPolicy(policy *cloudresourcemanager.Policy) error {
url := fmt.Sprintf("%s%s", u.Config.BigQueryBasePath, u.GetResourceId())
access, err := policyToAccess(policy)
if err != nil {
return err
}
obj := map[string]interface{}{
"access": access,
}
userAgent, err := generateUserAgentString(u.d, u.Config.userAgent)
if err != nil {
return err
}
_, err = sendRequest(u.Config, "PATCH", u.project, url, userAgent, obj)
if err != nil {
return fmt.Errorf("Error creating DatasetAccess: %s", err)
}
return nil
}
func accessToPolicy(access interface{}) (*cloudresourcemanager.Policy, error) {
if access == nil {
return nil, nil
}
roleToBinding := make(map[string]*cloudresourcemanager.Binding)
accessArr := access.([]interface{})
for _, v := range accessArr {
memberRole := v.(map[string]interface{})
rawRole, ok := memberRole["role"]
if !ok {
// "view" allows role to not be defined. It is a special dataset access construct, so ignore
// If a user wants to manage "view" access they should use the `bigquery_dataset_access` resource
continue
}
role := rawRole.(string)
if iamRole, ok := bigqueryAccessPrimitiveToRoleMap[role]; ok {
// API changes certain IAM roles to legacy roles. Revert these changes
role = iamRole
}
member, err := accessToIamMember(memberRole)
if err != nil {
return nil, err
}
// We have to combine bindings manually
binding, ok := roleToBinding[role]
if !ok {
binding = &cloudresourcemanager.Binding{Role: role, Members: []string{}}
}
binding.Members = append(binding.Members, member)
roleToBinding[role] = binding
}
bindings := make([]*cloudresourcemanager.Binding, 0)
for _, v := range roleToBinding {
bindings = append(bindings, v)
}
return &cloudresourcemanager.Policy{Bindings: bindings}, nil
}
func policyToAccess(policy *cloudresourcemanager.Policy) ([]map[string]interface{}, error) {
res := make([]map[string]interface{}, 0)
if len(policy.AuditConfigs) != 0 {
return nil, errors.New("Access policies not allowed on BigQuery Dataset IAM policies")
}
for _, binding := range policy.Bindings {
if binding.Condition != nil {
return nil, errors.New("IAM conditions not allowed on BigQuery Dataset IAM")
}
if fullRole, ok := bigqueryAccessPrimitiveToRoleMap[binding.Role]; ok {
return nil, fmt.Errorf("BigQuery Dataset legacy role %s is not allowed when using google_bigquery_dataset_iam resources. Please use the full form: %s", binding.Role, fullRole)
}
for _, member := range binding.Members {
// Do not append any deleted members
if strings.HasPrefix(member, "deleted:") {
continue
}
access := map[string]interface{}{
"role": binding.Role,
}
memberType, member, err := iamMemberToAccess(member)
if err != nil {
return nil, err
}
access[memberType] = member
res = append(res, access)
}
}
return res, nil
}
// Returns the member access type and member for an IAM member.
// Dataset access uses different member types to identify groups, domains, etc.
// these types are used as keys in the access JSON payload
func iamMemberToAccess(member string) (string, string, error) {
if strings.HasPrefix(member, "deleted:") {
return "", "", fmt.Errorf("BigQuery Dataset IAM member is deleted: %s", member)
}
pieces := strings.SplitN(member, ":", 2)
if len(pieces) > 1 {
switch pieces[0] {
case "group":
return "groupByEmail", pieces[1], nil
case "domain":
return "domain", pieces[1], nil
case "user":
return "userByEmail", pieces[1], nil
case "serviceAccount":
return "userByEmail", pieces[1], nil
default:
return "", "", fmt.Errorf("Failed to parse BigQuery Dataset IAM member type: %s", member)
}
}
if member == "projectOwners" || member == "projectReaders" || member == "projectWriters" || member == "allAuthenticatedUsers" {
// These are special BigQuery Dataset permissions
return "specialGroup", member, nil
}
return "iamMember", member, nil
}
func accessToIamMember(access map[string]interface{}) (string, error) {
// One of the fields must be set, we have to find which IAM member type this maps to
if member, ok := access["groupByEmail"]; ok {
return fmt.Sprintf("group:%s", member.(string)), nil
}
if member, ok := access["domain"]; ok {
return fmt.Sprintf("domain:%s", member.(string)), nil
}
if member, ok := access["specialGroup"]; ok {
return member.(string), nil
}
if member, ok := access["iamMember"]; ok {
return member.(string), nil
}
if _, ok := access["view"]; ok {
// view does not map to an IAM member, use access instead
return "", fmt.Errorf("Failed to convert BigQuery Dataset access to IAM member. To use views with a dataset, please use dataset_access")
}
if _, ok := access["dataset"]; ok {
// dataset does not map to an IAM member, use access instead
return "", fmt.Errorf("Failed to convert BigQuery Dataset access to IAM member. To use views with a dataset, please use dataset_access")
}
if member, ok := access["userByEmail"]; ok {
// service accounts have "gservice" in their email. This is best guess due to lost information
if strings.Contains(member.(string), "gserviceaccount") {
return fmt.Sprintf("serviceAccount:%s", member.(string)), nil
}
return fmt.Sprintf("user:%s", member.(string)), nil
}
return "", fmt.Errorf("Failed to identify IAM member from BigQuery Dataset access: %v", access)
}
func (u *BigqueryDatasetIamUpdater) GetResourceId() string {
return fmt.Sprintf("projects/%s/datasets/%s", u.project, u.datasetId)
}
// Matches the mutex of google_big_query_dataset_access
func (u *BigqueryDatasetIamUpdater) GetMutexKey() string {
return fmt.Sprintf("%s", u.datasetId)
}
func (u *BigqueryDatasetIamUpdater) DescribeResource() string {
return fmt.Sprintf("Bigquery Dataset %s/%s", u.project, u.datasetId)
}