chore: fix linter warnings

Address all the linter warnings

Signed-off-by: Flavio Castelli <[email protected]>

pkg/info-service/images.go

@@ -14,17 +14,17 @@ import (
 // Image describes an object returned by
 // https://susepubliccloudinfo.suse.com/VERSION/FRAMEWORK/REGION/images.json
 //
-// {
-//   "name": "suse-sles-15-sp1-v20190624-hvm-ssd-x86_64",
-//   "state": "active",
-//   "replacementname": "",
-//   "replacementid": "",
-//   "publishedon": "20190624",
-//   "deprecatedon": "",
-//   "region": "eu-central-1",
-//   "id": "ami-0352b14942c00b04b",
-//   "deletedon": ""
-// },
+//	{
+//	  "name": "suse-sles-15-sp1-v20190624-hvm-ssd-x86_64",
+//	  "state": "active",
+//	  "replacementname": "",
+//	  "replacementid": "",
+//	  "publishedon": "20190624",
+//	  "deprecatedon": "",
+//	  "region": "eu-central-1",
+//	  "id": "ami-0352b14942c00b04b",
+//	  "deletedon": ""
+//	},
 type Image struct {
 	Name            string `json:"name"`
 	State           string `jsong:"state"`

pkg/info-service/images_test.go

@@ -35,7 +35,9 @@ func TestValidRequestForActiveImages(t *testing.T) {
 			return
 		}
 		defer file.Close()
-		io.Copy(w, file)
+		if _, err := io.Copy(w, file); err != nil {
+			t.Fatalf("unexpected error %v", err)
+		}
 
 	}))
 	defer ts.Close()
@@ -77,7 +79,9 @@ func TestFilterImages(t *testing.T) {
 			return
 		}
 		defer file.Close()
-		io.Copy(w, file)
+		if _, err := io.Copy(w, file); err != nil {
+			t.Fatalf("unexpected error %v", err)
+		}
 
 	}))
 	defer ts.Close()
@@ -120,7 +124,9 @@ func TestSortAscendingImages(t *testing.T) {
 			return
 		}
 		defer file.Close()
-		io.Copy(w, file)
+		if _, err := io.Copy(w, file); err != nil {
+			t.Fatalf("unexpected error %v", err)
+		}
 
 	}))
 	defer ts.Close()
@@ -174,7 +180,9 @@ func TestSortDescendingImages(t *testing.T) {
 			return
 		}
 		defer file.Close()
-		io.Copy(w, file)
+		if _, err := io.Copy(w, file); err != nil {
+			t.Fatalf("unexpected error %v", err)
+		}
 
 	}))
 	defer ts.Close()

susepubliccloud/data_source_susepubliccloud_images_ids.go

@@ -2,10 +2,10 @@ package susepubliccloud
 
 import (
 	"fmt"
+	"hash/crc32"
 	"log"
 
-	"github.com/SUSE/terraform-provider-susepubliccloud/pkg/info-service"
-	"github.com/hashicorp/terraform-plugin-sdk/helper/hashcode"
+	images "github.com/SUSE/terraform-provider-susepubliccloud/pkg/info-service"
 	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
 	"github.com/hashicorp/terraform-plugin-sdk/helper/validation"
 )
@@ -18,7 +18,7 @@ func dataSourceSUSEPublicCloudImageIDs() *schema.Resource {
 				Type:         schema.TypeString,
 				Optional:     true,
 				ForceNew:     true,
-				ValidateFunc: validation.ValidateRegexp,
+				ValidateFunc: validation.StringIsValidRegExp,
 			},
 			"cloud": {
 				Type:         schema.TypeString,
@@ -102,8 +102,26 @@ func dataSourceSUSEPublicCloudImageIDsRead(d *schema.ResourceData, meta interfac
 		imageIDs = append(imageIDs, image.ID)
 	}
 
-	d.SetId(fmt.Sprintf("%d", hashcode.String(fmt.Sprintf("%+v", params))))
-	d.Set("ids", imageIDs)
+	d.SetId(fmt.Sprintf("%d", stringTohashcode(fmt.Sprintf("%+v", params))))
+	return d.Set("ids", imageIDs)
+}
 
-	return nil
+// String hashes a string to a unique hashcode.
+//
+// Copied from hashicorp/terraform-plugin-sdk/helper/hashcode/hashcode.go
+// Because this is going to be dropped in future releases of the library
+//
+// crc32 returns a uint32, but for our use we need
+// and non negative integer. Here we cast to an integer
+// and invert it if the result is negative.
+func stringTohashcode(s string) int {
+	v := int(crc32.ChecksumIEEE([]byte(s)))
+	if v >= 0 {
+		return v
+	}
+	if -v >= 0 {
+		return -v
+	}
+	// v == MinInt
+	return 0
 }