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Datasource for Backend Services (#1150)
Exposes existing `google_compute_backend_service` as data sources. This addresses #149 . This allows, for instance, to collect a backend service's self_link and use it from an other workspace/tfstate, sharing most of the loadbalancers definition.
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28
google/data_source_google_compute_backend_service.go
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28
google/data_source_google_compute_backend_service.go
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package google
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import (
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"github.com/hashicorp/terraform/helper/schema"
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)
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func dataSourceGoogleComputeBackendService() *schema.Resource {
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dsSchema := datasourceSchemaFromResourceSchema(resourceComputeBackendService().Schema)
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// Set 'Required' schema elements
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addRequiredFieldsToSchema(dsSchema, "name")
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// Set 'Optional' schema elements
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addOptionalFieldsToSchema(dsSchema, "project")
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return &schema.Resource{
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Read: dataSourceComputeBackendServiceRead,
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Schema: dsSchema,
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}
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}
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func dataSourceComputeBackendServiceRead(d *schema.ResourceData, meta interface{}) error {
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serviceName := d.Get("name").(string)
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d.SetId(serviceName)
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return resourceComputeBackendServiceRead(d, meta)
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}
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85
google/data_source_google_compute_backend_service_test.go
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85
google/data_source_google_compute_backend_service_test.go
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package google
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import (
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"fmt"
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"testing"
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"github.com/hashicorp/terraform/helper/acctest"
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"github.com/hashicorp/terraform/helper/resource"
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"github.com/hashicorp/terraform/terraform"
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)
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func TestAccDataSourceComputeBackendService_basic(t *testing.T) {
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t.Parallel()
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serviceName := fmt.Sprintf("tf-test-%s", acctest.RandString(10))
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checkName := fmt.Sprintf("tf-test-%s", acctest.RandString(10))
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resource.Test(t, resource.TestCase{
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PreCheck: func() { testAccPreCheck(t) },
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Providers: testAccProviders,
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CheckDestroy: testAccCheckComputeBackendServiceDestroy,
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Steps: []resource.TestStep{
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resource.TestStep{
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Config: testAccDataSourceComputeBackendService_basic(serviceName, checkName),
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Check: testAccDataSourceComputeBackendServiceCheck("data.google_compute_backend_service.baz", "google_compute_backend_service.foobar"),
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},
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},
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})
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}
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func testAccDataSourceComputeBackendServiceCheck(dsName, rsName string) resource.TestCheckFunc {
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return func(s *terraform.State) error {
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rs, ok := s.RootModule().Resources[rsName]
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if !ok {
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return fmt.Errorf("can't find resource called %s in state", rsName)
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}
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ds, ok := s.RootModule().Resources[dsName]
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if !ok {
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return fmt.Errorf("can't find data source called %s in state", dsName)
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}
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dsAttr := ds.Primary.Attributes
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rsAttr := rs.Primary.Attributes
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attrsToTest := []string{
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"id",
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"name",
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"description",
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"self_link",
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"fingerprint",
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"port_name",
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"protocol",
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}
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for _, attrToTest := range attrsToTest {
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if dsAttr[attrToTest] != rsAttr[attrToTest] {
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return fmt.Errorf("%s is %s; want %s", attrToTest, dsAttr[attrToTest], rsAttr[attrToTest])
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}
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}
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return nil
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}
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}
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func testAccDataSourceComputeBackendService_basic(serviceName, checkName string) string {
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return fmt.Sprintf(`
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resource "google_compute_backend_service" "foobar" {
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name = "%s"
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description = "foobar backend service"
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health_checks = ["${google_compute_http_health_check.zero.self_link}"]
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}
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resource "google_compute_http_health_check" "zero" {
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name = "%s"
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request_path = "/"
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check_interval_sec = 1
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timeout_sec = 1
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}
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data "google_compute_backend_service" "baz" {
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name = "${google_compute_backend_service.foobar.name}"
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}
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`, serviceName, checkName)
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}
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@ -87,6 +87,7 @@ func Provider() terraform.ResourceProvider {
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"google_organization": dataSourceGoogleOrganization(),
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"google_storage_object_signed_url": dataSourceGoogleSignedUrl(),
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"google_storage_project_service_account": dataSourceGoogleStorageProjectServiceAccount(),
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"google_compute_backend_service": dataSourceGoogleComputeBackendService(),
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},
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ResourcesMap: map[string]*schema.Resource{
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@ -0,0 +1,57 @@
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---
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layout: "google"
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page_title: "Google: google_compute_backend_service"
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sidebar_current: "docs-google-datasource-compute-backend-service"
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description: |-
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Get information about a Backend Service.
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---
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# google\_compute\_backend\_service
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Provide acces to a Backend Service's attribute. For more information
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see [the official documentation](https://cloud.google.com/compute/docs/load-balancing/http/backend-service)
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and the [API](https://cloud.google.com/compute/docs/reference/latest/backendServices).
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## Example Usage
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```tf
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data "google_compute_backend_service" "baz" {
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name = "foobar"
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}
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```
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## Argument Reference
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The following arguments are supported:
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* `name` - (Required) The name of the Backend Service.
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- - -
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* `project` - (Optional) The project in which the resource belongs. If it is not provided, the provider project is used.
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## Attributes Reference
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In addition to the arguments listed above, the following attributes are exported:
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* `connection_draining_timeout_sec` - Time for which instance will be drained (not accept new connections, but still work to finish started ones).
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* `description` - Textual description for the Backend Service.
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* `enable_cdn` - Whether or not Cloud CDN is enabled on the Backend Service.
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* `fingerprint` - The fingerprint of the Backend Service.
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* `port_name` - The name of a service that has been added to an instance group in this backend.
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* `protocol` - The protocol for incoming requests.
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* `self_link` - The URI of the Backend Service.
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* `session_affinity` - The Backend Service session stickyness configuration.
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* `timeout_sec` - The number of seconds to wait for a backend to respond to a request before considering the request failed.
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* `backend` - The list of backends that serve this Backend Service.
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* `health_checks` - The list of HTTP/HTTPS health checks used by the Backend Service.
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@ -65,6 +65,9 @@
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<li<%= sidebar_current("docs-google-datasource-container-cluster") %>>
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<a href="/docs/providers/google/d/google_container_cluster.html">google_container_cluster</a>
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</li>
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<li<%= sidebar_current("docs-google-datasource-compute-backend-service") %>>
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<a href="/docs/providers/google/d/datasource_google_compute_backend_service.html">google_compute_backend_service</a>
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</li>
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<li<%= sidebar_current("docs-google-datasource-container-versions") %>>
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<a href="/docs/providers/google/d/google_container_engine_versions.html">google_container_engine_versions</a>
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</li>
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