feat: add start_time attribute to data source aws_ebs_snapshot

.changelog/39557.txt

@@ -0,0 +1,3 @@
+```release-note:enhancement
+data-source/aws_ebs_snapshot: Add start_time attribute
+```

internal/service/ec2/ebs_snapshot_data_source.go

@@ -90,6 +90,10 @@ func dataSourceEBSSnapshot() *schema.Resource {
 				Optional: true,
 				Elem:     &schema.Schema{Type: schema.TypeString},
 			},
+			names.AttrStartTime: {
+				Type:     schema.TypeString,
+				Computed: true,
+			},
 			names.AttrState: {
 				Type:     schema.TypeString,
 				Computed: true,
@@ -177,6 +181,7 @@ func dataSourceEBSSnapshotRead(ctx context.Context, d *schema.ResourceData, meta
 	d.Set(names.AttrOwnerID, snapshot.OwnerId)
 	d.Set(names.AttrSnapshotID, snapshot.SnapshotId)
 	d.Set(names.AttrState, snapshot.State)
+	d.Set(names.AttrStartTime, aws.ToTime(snapshot.StartTime).Format(time.RFC3339))
 	d.Set("storage_tier", snapshot.StorageTier)
 	d.Set("volume_id", snapshot.VolumeId)
 	d.Set(names.AttrVolumeSize, snapshot.VolumeSize)

internal/service/ec2/ebs_snapshot_data_source_test.go

@@ -38,6 +38,7 @@ func TestAccEC2EBSSnapshotDataSource_basic(t *testing.T) {
 					resource.TestCheckResourceAttrPair(dataSourceName, acctest.CtTagsPercent, resourceName, acctest.CtTagsPercent),
 					resource.TestCheckResourceAttrPair(dataSourceName, "volume_id", resourceName, "volume_id"),
 					resource.TestCheckResourceAttrPair(dataSourceName, names.AttrVolumeSize, resourceName, names.AttrVolumeSize),
+					resource.TestCheckResourceAttrSet(dataSourceName, names.AttrStartTime),
 				),
 			},
 		},

website/docs/d/ebs_snapshot.html.markdown

@@ -60,6 +60,7 @@ This data source exports the following attributes in addition to the arguments a
 * `volume_size` - Size of the drive in GiBs.
 * `kms_key_id` - ARN for the KMS encryption key.
 * `data_encryption_key_id` - The data encryption key identifier for the snapshot.
+* `start_time` - Time stamp when the snapshot was initiated.
 * `state` - Snapshot state.
 * `storage_tier` - Storage tier in which the snapshot is stored.
 * `outpost_arn` - ARN of the Outpost on which the snapshot is stored.