Add GCP Dataplex Data Scan adapter (#2549)

## Summary
- Creates new adapter for Dataplex data scans
- Supports GET and SEARCH operations with location-based queries
- Defines blast propagation rules for Dataplex entities and storage
resources
- Includes terraform mapping support

GitOrigin-RevId: c5f6e05282f76d45e45aface0eebbb3eb1259f60

Author: omerdemirok

sources/gcp/dynamic/adapters/dataplex-data-scan.go

@@ -0,0 +1,60 @@
+package adapters
+
+import (
+	"github.com/overmindtech/cli/sdp-go"
+	gcpshared "github.com/overmindtech/cli/sources/gcp/shared"
+)
+
+// Dataplex Data Scan allows you to perform data quality checks, profiling, and discovery within data assets in Dataplex
+// GCP Ref (GET): https://cloud.google.com/dataplex/docs/reference/rest/v1/projects.locations.dataScans/get
+// GCP Ref (Schema): https://cloud.google.com/dataplex/docs/reference/rest/v1/projects.locations.dataScans#DataScan
+// GET  https://dataplex.googleapis.com/v1/projects/{project}/locations/{location}/dataScans/{dataScan}
+// LIST https://dataplex.googleapis.com/v1/projects/{project}/locations/{location}/dataScans
+var _ = registerableAdapter{
+	sdpType: gcpshared.DataplexDataScan,
+	meta: gcpshared.AdapterMeta{
+		SDPAdapterCategory: sdp.AdapterCategory_ADAPTER_CATEGORY_OBSERVABILITY,
+		Scope:              gcpshared.ScopeProject,
+		GetEndpointBaseURLFunc: gcpshared.ProjectLevelEndpointFuncWithTwoQueries(
+			"https://dataplex.googleapis.com/v1/projects/%s/locations/%s/dataScans/%s",
+		),
+		SearchEndpointFunc: gcpshared.ProjectLevelEndpointFuncWithSingleQuery(
+			"https://dataplex.googleapis.com/v1/projects/%s/locations/%s/dataScans",
+		),
+		SearchDescription:   "Search for Dataplex data scans in a location. Use the location name e.g., 'us-central1' or the format \"projects/project_id/locations/location/dataScans/data_scan_id\" which is supported for terraform mappings.",
+		UniqueAttributeKeys: []string{"locations", "dataScans"},
+		IAMPermissions: []string{
+			"dataplex.dataScans.get",
+			"dataplex.dataScans.list",
+		},
+		// TODO: https://linear.app/overmind/issue/ENG-631 state
+		// https://cloud.google.com/dataplex/docs/reference/rest/v1/projects.locations.dataScans#DataScan
+	},
+	blastPropagation: map[string]*gcpshared.Impact{
+		// Data source references - can scan various data sources
+		"data.entity": {
+			ToSDPItemType: gcpshared.DataplexEntity,
+			Description:   "If the Dataplex Entity is deleted: The data scan will fail to access the data source. If the data scan is updated: The dataplex entity remains unaffected.",
+			BlastPropagation: &sdp.BlastPropagation{
+				In: true,
+			},
+		},
+		"data.resource": {
+			ToSDPItemType: gcpshared.StorageBucket,
+			Description:   "If the storage resource is deleted or inaccessible: The data scan will fail to access the data source. If the data scan is updated: The storage resource remains unaffected.",
+			BlastPropagation: &sdp.BlastPropagation{
+				In: true,
+			},
+		},
+	},
+	terraformMapping: gcpshared.TerraformMapping{
+		Reference:   "https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/dataplex_datascan",
+		Description: "id => projects/{{project}}/locations/{{location}}/dataScans/{{data_scan_id}}",
+		Mappings: []*sdp.TerraformMapping{
+			{
+				TerraformMethod:   sdp.QueryMethod_SEARCH,
+				TerraformQueryMap: "google_dataplex_datascan.id",
+			},
+		},
+	},
+}.Register()

sources/gcp/shared/item-types.go

@@ -68,6 +68,8 @@ var (
 	CloudBuildBuild                               = shared.NewItemType(GCP, CloudBuild, Build)
 	DataplexEntryGroup                            = shared.NewItemType(GCP, DataPlex, EntryGroup)
 	DataplexAspectType                            = shared.NewItemType(GCP, DataPlex, AspectType)
+	DataplexDataScan                              = shared.NewItemType(GCP, DataPlex, DataScan)
+	DataplexEntity                                = shared.NewItemType(GCP, DataPlex, Entity)
 	ServiceUsageService                           = shared.NewItemType(GCP, ServiceUsage, Service)
 	RunRevision                                   = shared.NewItemType(GCP, Run, Revision)
 	SQLAdminBackup                                = shared.NewItemType(GCP, SqlAdmin, Backup)

sources/gcp/shared/models.go

@@ -117,6 +117,8 @@ const (
 	Build                        shared.Resource = "build"
 	EntryGroup                   shared.Resource = "entry-group"
 	AspectType                   shared.Resource = "aspect-type"
+	DataScan                     shared.Resource = "data-scan"
+	Entity                       shared.Resource = "entity"
 	Service                      shared.Resource = "service"
 	Revision                     shared.Resource = "revision"
 	BackupRun                    shared.Resource = "backup-run"