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resource_gcp_secret_roleset.go
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resource_gcp_secret_roleset.go
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package vault
import (
"fmt"
"log"
"regexp"
"strings"
"github.com/hashicorp/terraform-plugin-sdk/helper/customdiff"
"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
"github.com/hashicorp/vault/api"
)
var (
gcpSecretRolesetBackendFromPathRegex = regexp.MustCompile("^(.+)/roleset/.+$")
gcpSecretRolesetNameFromPathRegex = regexp.MustCompile("^.+/roleset/(.+)$")
)
func gcpSecretRolesetResource() *schema.Resource {
return &schema.Resource{
Create: gcpSecretRolesetCreate,
Read: gcpSecretRolesetRead,
Update: gcpSecretRolesetUpdate,
Delete: gcpSecretRolesetDelete,
Exists: gcpSecretRolesetExists,
Importer: &schema.ResourceImporter{
State: schema.ImportStatePassthrough,
},
Schema: map[string]*schema.Schema{
"backend": {
Type: schema.TypeString,
Required: true,
Description: "Path where the GCP secrets engine is mounted.",
ForceNew: true,
// standardise on no beginning or trailing slashes
StateFunc: func(v interface{}) string {
return strings.Trim(v.(string), "/")
},
},
"roleset": {
Type: schema.TypeString,
Required: true,
Description: "Name of the RoleSet to create",
ForceNew: true,
},
"secret_type": {
Type: schema.TypeString,
Optional: true,
ForceNew: true,
Computed: true,
Description: "Type of secret generated for this role set. Defaults to `access_token`. Accepted values: `access_token`, `service_account_key`",
},
"project": {
Type: schema.TypeString,
Required: true,
ForceNew: true,
Description: "Name of the GCP project that this roleset's service account will belong to.",
},
"token_scopes": {
Type: schema.TypeSet,
Elem: &schema.Schema{
Type: schema.TypeString,
},
Optional: true,
Description: "List of OAuth scopes to assign to `access_token` secrets generated under this role set (`access_token` role sets only) ",
},
"binding": {
Type: schema.TypeSet,
Required: true,
Set: gcpSecretBindingHash,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"resource": {
Type: schema.TypeString,
Required: true,
Description: "Resource name",
},
"roles": {
Type: schema.TypeSet,
Required: true,
Description: "List of roles to apply to the resource",
Elem: &schema.Schema{
Type: schema.TypeString,
},
},
},
},
},
"service_account_email": {
Type: schema.TypeString,
Computed: true,
Description: "Email of the service account created by Vault for this Roleset",
},
},
CustomizeDiff: customdiff.ComputedIf("service_account_email", func(d *schema.ResourceDiff, meta interface{}) bool {
log.Printf("[DEBUG] Checking if GCP Secrets backend roleset has changes in `token_scopes` or `binding`")
// Due to https://github.com/hashicorp/terraform/issues/17411
// we cannot use d.HasChange("binding") directly
oldBinding, newBinding := d.GetChange("binding")
oldHcl := gcpSecretRenderBindingsFromData(oldBinding)
newHcl := gcpSecretRenderBindingsFromData(newBinding)
return d.HasChange("token_scopes") || oldHcl != newHcl
}),
}
}
func gcpSecretRolesetCreate(d *schema.ResourceData, meta interface{}) error {
client := meta.(*api.Client)
backend := d.Get("backend").(string)
roleset := d.Get("roleset").(string)
path := gcpSecretRolesetPath(backend, roleset)
log.Printf("[DEBUG] Writing GCP Secrets backend roleset %q", path)
data := map[string]interface{}{}
gcpSecretRolesetUpdateFields(d, data)
d.SetId(path)
_, err := client.Logical().Write(path, data)
if err != nil {
d.SetId("")
return fmt.Errorf("Error writing GCP Secrets backend roleset %q: %s", path, err)
}
log.Printf("[DEBUG] Wrote GCP Secrets backend roleset %q", path)
return gcpSecretRolesetRead(d, meta)
}
func gcpSecretRolesetRead(d *schema.ResourceData, meta interface{}) error {
client := meta.(*api.Client)
path := d.Id()
backend, err := gcpSecretRolesetBackendFromPath(path)
if err != nil {
return fmt.Errorf("invalid path %q for GCP secrets backend roleset: %s", path, err)
}
roleset, err := gcpSecretRoleSetdRolesetNameFromPath(path)
if err != nil {
return fmt.Errorf("invalid path %q for GCP Secrets backend roleset: %s", path, err)
}
log.Printf("[DEBUG] Reading GCP Secrets backend roleset %q", path)
resp, err := client.Logical().Read(path)
if err != nil {
return fmt.Errorf("error reading GCP Secrets backend roleset %q: %s", path, err)
}
log.Printf("[DEBUG] Read GCP Secrets backend roleset %q", path)
if resp == nil {
log.Printf("[WARN] GCP Secrets backend roleset %q not found, removing from state", path)
d.SetId("")
return nil
}
d.Set("backend", backend)
d.Set("roleset", roleset)
for _, k := range []string{"secret_type", "token_scopes", "service_account_email"} {
v, ok := resp.Data[k]
if ok {
if err := d.Set(k, v); err != nil {
return fmt.Errorf("error reading %s for GCP Secrets backend roleset %q: %q", k, path, err)
}
}
}
// In https://github.com/hashicorp/vault-plugin-secrets-gcp/pull/28, this field is changed to
// `project`. We handle cases where it used to be `service_account_project` for backward
// compatibility.
project, ok := resp.Data["project"]
if !ok {
project, ok = resp.Data["service_account_project"]
if !ok {
return fmt.Errorf("error reading %s for GCP Secrets backend roleset %q", "project", path)
}
}
if err := d.Set("project", project); err != nil {
return fmt.Errorf("error reading %s for GCP Secrets backend roleset %q", "project", path)
}
if err := d.Set("binding", gcpSecretFlattenBinding(resp.Data["bindings"])); err != nil {
return fmt.Errorf("error reading %s for GCP Secrets backend roleset %q", "binding", path)
}
return nil
}
func gcpSecretRolesetUpdate(d *schema.ResourceData, meta interface{}) error {
client := meta.(*api.Client)
path := d.Id()
data := map[string]interface{}{}
gcpSecretRolesetUpdateFields(d, data)
log.Printf("[DEBUG] Updating GCP Secrets backend roleset %q", path)
_, err := client.Logical().Write(path, data)
if err != nil {
return fmt.Errorf("Error updating GCP Secrets backend roleset %q: %s", path, err)
}
log.Printf("[DEBUG] Updated GCP Secrets backend roleset %q", path)
return gcpSecretRolesetRead(d, meta)
}
func gcpSecretRolesetDelete(d *schema.ResourceData, meta interface{}) error {
client := meta.(*api.Client)
path := d.Id()
log.Printf("[DEBUG] Deleting GCP secrets backend roleset %q", path)
_, err := client.Logical().Delete(path)
if err != nil {
return fmt.Errorf("Error deleting GCP secrets backend roleset %q", path)
}
log.Printf("[DEBUG] Deleted GCP secrets backend roleset %q", path)
return nil
}
func gcpSecretRolesetUpdateFields(d *schema.ResourceData, data map[string]interface{}) {
if v, ok := d.GetOk("secret_type"); ok {
data["secret_type"] = v.(string)
}
if v, ok := d.GetOk("project"); ok {
data["project"] = v.(string)
}
if v, ok := d.GetOk("token_scopes"); ok && d.Get("secret_type").(string) == "access_token" {
data["token_scopes"] = v.(*schema.Set).List()
}
if v, ok := d.GetOk("binding"); ok {
bindingsHCL := gcpSecretRenderBindingsFromData(v)
log.Printf("[DEBUG] Rendered GCP Secrets backend roleset bindings HCL:\n%s", bindingsHCL)
data["bindings"] = bindingsHCL
}
}
func gcpSecretRolesetExists(d *schema.ResourceData, meta interface{}) (bool, error) {
client := meta.(*api.Client)
path := d.Id()
log.Printf("[DEBUG] Checking if %q exists", path)
secret, err := client.Logical().Read(path)
if err != nil {
return true, fmt.Errorf("error checking if %q exists: %s", path, err)
}
log.Printf("[DEBUG] Checked if %q exists", path)
return secret != nil, nil
}
func gcpSecretRolesetPath(backend, roleset string) string {
return strings.Trim(backend, "/") + "/roleset/" + strings.Trim(roleset, "/")
}
func gcpSecretRolesetBackendFromPath(path string) (string, error) {
if !gcpSecretRolesetBackendFromPathRegex.MatchString(path) {
return "", fmt.Errorf("no backend found")
}
res := gcpSecretRolesetBackendFromPathRegex.FindStringSubmatch(path)
if len(res) != 2 {
return "", fmt.Errorf("unexpected number of matches (%d) for backend", len(res))
}
return res[1], nil
}
func gcpSecretRoleSetdRolesetNameFromPath(path string) (string, error) {
if !gcpSecretRolesetNameFromPathRegex.MatchString(path) {
return "", fmt.Errorf("no roleset found")
}
res := gcpSecretRolesetNameFromPathRegex.FindStringSubmatch(path)
if len(res) != 2 {
return "", fmt.Errorf("unexpected number of matches (%d) for role", len(res))
}
return res[1], nil
}