fixed struct alignment && refactor linter (#369)

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Reviewed-on: #369
Co-authored-by: Evstigneev Denis <danteevstigneev@yandex.ru>
Co-committed-by: Evstigneev Denis <danteevstigneev@yandex.ru>

util/structfs/metadata_digitalocean.go

@@ -10,11 +10,18 @@ import (
 type DigitalOceanMetadata struct {
 	Metadata struct {
 		V1 struct {
-			DropletID  int64    `json:"droplet_id"`
-			Hostname   string   `json:"hostname"`
-			VendorData string   `json:"vendor_data"`
+			Features map[string]interface{} `json:"features"`
+
+			Hostname   string `json:"hostname"`
+			VendorData string `json:"vendor_data"`
+			Region     string `json:"region"`
+
 			PublicKeys []string `json:"public_keys"`
-			Region     string   `json:"region"`
+
+			DNS struct {
+				Nameservers []string `json:"nameservers"`
+			} `json:"dns"`
+
 			Interfaces struct {
 				Private []struct {
 					IPv4 struct {
@@ -31,24 +38,23 @@ type DigitalOceanMetadata struct {
 						Netmask string `json:"netmask"`
 						Gateway string `json:"gateway"`
 					} `json:"ipv4"`
-					IPv6 struct {
-						Address string `json:"ip_address"`
-						CIDR    int    `json:"cidr"`
-						Gateway string `json:"gateway"`
-					} `json:"ipv6"`
 					Mac  string `json:"mac"`
 					Type string `json:"type"`
+					IPv6 struct {
+						Address string `json:"ip_address"`
+						Gateway string `json:"gateway"`
+						CIDR    int    `json:"cidr"`
+					} `json:"ipv6"`
 				} `json:"public"`
 			} `json:"interfaces"`
+
+			DropletID int64 `json:"droplet_id"`
+
 			FloatingIP struct {
 				IPv4 struct {
 					Active bool `json:"active"`
 				} `json:"ipv4"`
 			} `json:"floating_ip"`
-			DNS struct {
-				Nameservers []string `json:"nameservers"`
-			} `json:"dns"`
-			Features map[string]interface{} `json:"features"`
 		} `json:"v1"`
 	} `json:"metadata"`
 }

util/structfs/metadata_ec2.go

@@ -2,29 +2,29 @@ package structfs
 
 type EC2Metadata struct {
 	Latest struct {
+		Userdata string `json:"user-data"`
 		Metadata struct {
-			AMIID              int      `json:"ami-id"`
-			AMILaunchIndex     int      `json:"ami-launch-index"`
-			AMIManifestPath    string   `json:"ami-manifest-path"`
-			AncestorAMIIDs     []int    `json:"ancestor-ami-ids"`
-			BlockDeviceMapping []string `json:"block-device-mapping"`
-			InstanceID         int      `json:"instance-id"`
-			InstanceType       string   `json:"instance-type"`
-			LocalHostname      string   `json:"local-hostname"`
-			LocalIPv4          string   `json:"local-ipv4"`
-			KernelID           int      `json:"kernel-id"`
-			Placement          string   `json:"placement"`
-			AvailabilityZone   string   `json:"availability-zone"`
-			ProductCodes       string   `json:"product-codes"`
-			PublicHostname     string   `json:"public-hostname"`
-			PublicIPv4         string   `json:"public-ipv4"`
-			PublicKeys         []struct {
+			AMIManifestPath  string `json:"ami-manifest-path"`
+			InstanceType     string `json:"instance-type"`
+			LocalHostname    string `json:"local-hostname"`
+			LocalIPv4        string `json:"local-ipv4"`
+			Placement        string `json:"placement"`
+			AvailabilityZone string `json:"availability-zone"`
+			ProductCodes     string `json:"product-codes"`
+			PublicHostname   string `json:"public-hostname"`
+			PublicIPv4       string `json:"public-ipv4"`
+			PublicKeys       []struct {
 				Key []string `json:"-"`
 			} `json:"public-keys"`
-			RamdiskID      int      `json:"ramdisk-id"`
-			ReservationID  int      `json:"reservation-id"`
-			SecurityGroups []string `json:"security-groups"`
+			AncestorAMIIDs     []int    `json:"ancestor-ami-ids"`
+			BlockDeviceMapping []string `json:"block-device-mapping"`
+			SecurityGroups     []string `json:"security-groups"`
+			RamdiskID          int      `json:"ramdisk-id"`
+			ReservationID      int      `json:"reservation-id"`
+			AMIID              int      `json:"ami-id"`
+			AMILaunchIndex     int      `json:"ami-launch-index"`
+			KernelID           int      `json:"kernel-id"`
+			InstanceID         int      `json:"instance-id"`
 		} `json:"meta-data"`
-		Userdata string `json:"user-data"`
 	} `json:"latest"`
 }

util/structfs/structfs.go

@@ -35,22 +35,22 @@ func (fs *fs) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 }
 
 type fs struct {
+	modtime time.Time
 	iface   interface{}
 	tag     string
-	modtime time.Time
 }
 
 type file struct {
-	name    string
-	offset  int64
-	data    []byte
 	modtime time.Time
+	name    string
+	data    []byte
+	offset  int64
 }
 
 type fileInfo struct {
+	modtime time.Time
 	name    string
 	size    int64
-	modtime time.Time
 }
 
 func (fi *fileInfo) Sys() interface{} {
@@ -105,7 +105,7 @@ func (f *file) Read(b []byte) (int, error) {
 	return n, err
 }
 
-func (f *file) Readdir(count int) ([]os.FileInfo, error) {
+func (f *file) Readdir(_ int) ([]os.FileInfo, error) {
 	return nil, nil
 }
 

util/structfs/structfs_test.go

@@ -93,7 +93,7 @@ func TestAll(t *testing.T) {
 		in  string
 		out string
 	}{
-		{"http://127.0.0.1:8080/metadata/v1/", "droplet_id\nhostname\nvendor_data\npublic_keys\nregion\ninterfaces\nfloating_ip\ndns\nfeatures"},
+		{"http://127.0.0.1:8080/metadata/v1/", "features\nhostname\nvendor_data\nregion\npublic_keys\ndns\ninterfaces\ndroplet_id\nfloating_ip"},
 		{"http://127.0.0.1:8080/metadata/v1/droplet_id", "2756294"},
 		{"http://127.0.0.1:8080/metadata/v1/dns/", "nameservers"},
 		{"http://127.0.0.1:8080/metadata/v1/dns/nameservers", "2001:4860:4860::8844\n2001:4860:4860::8888\n8.8.8.8"},