Cleanup command and response types

- use consistent method recipient names
- move ErrorResponse to the end of the messages
- fix email address output in SignCertificateCommand String() method

pkg/messages/messages.go

@@ -150,8 +150,8 @@ type CAInfoCommand struct {
 	Name string `msgpack:"name"`
 }
 
-func (r *CAInfoCommand) String() string {
-	return fmt.Sprintf("name=%s", r.Name)
+func (c *CAInfoCommand) String() string {
+	return fmt.Sprintf("name=%s", c.Name)
 }
 
 type CAInfoResponse struct {
@@ -161,16 +161,8 @@ type CAInfoResponse struct {
 	Profiles    []CAProfile `msgpack:"profiles"`
 }
 
-func (i CAInfoResponse) String() string {
-	return fmt.Sprintf("certificate name=%s, signing=%t, profiles=[%s]", i.Name, i.Signing, i.Profiles)
-}
-
-type ErrorResponse struct {
-	Message string `msgpack:"message"`
-}
-
-func (e *ErrorResponse) String() string {
-	return fmt.Sprintf("message=%s", e.Message)
+func (r CAInfoResponse) String() string {
+	return fmt.Sprintf("certificate name=%s, signing=%t, profiles=[%s]", r.Name, r.Signing, r.Profiles)
 }
 
 type FetchCRLCommand struct {
@@ -178,13 +170,13 @@ type FetchCRLCommand struct {
 	LastKnownID []byte `msgpack:"last_known_id"`
 }
 
-func (f *FetchCRLCommand) String() string {
+func (c *FetchCRLCommand) String() string {
 	builder := &strings.Builder{}
 
-	_, _ = fmt.Fprintf(builder, "issuerId='%s'", f.IssuerID)
+	_, _ = fmt.Fprintf(builder, "issuerId='%s'", c.IssuerID)
 
-	if f.LastKnownID != nil {
-		_, _ = fmt.Fprintf(builder, ", lastKnownId=0x%x", new(big.Int).SetBytes(f.LastKnownID))
+	if c.LastKnownID != nil {
+		_, _ = fmt.Fprintf(builder, ", lastKnownId=0x%x", new(big.Int).SetBytes(c.LastKnownID))
 	}
 
 	return builder.String()
@@ -246,7 +238,7 @@ func (r *FetchCRLResponse) String() string {
 
 type HealthCommand struct{}
 
-func (h *HealthCommand) String() string {
+func (c *HealthCommand) String() string {
 	return ""
 }
 
@@ -289,14 +281,14 @@ type HealthResponse struct {
 	Info    []*HealthInfo
 }
 
-func (h *HealthResponse) String() string {
+func (r *HealthResponse) String() string {
 	builder := &strings.Builder{}
 
-	_, _ = fmt.Fprintf(builder, "signer version=%s, healthy=%v, health data=[", h.Version, h.Healthy)
+	_, _ = fmt.Fprintf(builder, "signer version=%s, healthy=%v, health data=[", r.Version, r.Healthy)
 
-	infos := make([]string, len(h.Info))
+	infos := make([]string, len(r.Info))
 
-	for i, info := range h.Info {
+	for i, info := range r.Info {
 		infos[i] = fmt.Sprintf("{%s}", info)
 	}
 
@@ -319,33 +311,33 @@ type SignCertificateCommand struct {
 	PreferredHash      crypto.Hash `msgpack:"preferred_hash"`
 }
 
-func (s *SignCertificateCommand) String() string {
+func (c *SignCertificateCommand) String() string {
 	builder := &strings.Builder{}
 
 	_, _ = fmt.Fprintf(
-		builder, "issuer_id=%s, profile_name=%s, cn=%s", s.IssuerID, s.ProfileName, s.CommonName,
+		builder, "issuer_id=%s, profile_name=%s, cn=%s", c.IssuerID, c.ProfileName, c.CommonName,
 	)
 
-	if s.Organization != "" {
-		_, _ = fmt.Fprintf(builder, ", o=%s", s.Organization)
+	if c.Organization != "" {
+		_, _ = fmt.Fprintf(builder, ", o=%s", c.Organization)
 	}
 
-	if s.OrganizationalUnit != "" {
-		_, _ = fmt.Fprintf(builder, ", ou=%s", s.OrganizationalUnit)
+	if c.OrganizationalUnit != "" {
+		_, _ = fmt.Fprintf(builder, ", ou=%s", c.OrganizationalUnit)
 	}
 
-	if len(s.Hostnames) > 0 {
+	if len(c.Hostnames) > 0 {
 		builder.WriteString(", hostnames=[")
 
-		builder.WriteString(strings.Join(s.Hostnames, ", "))
+		builder.WriteString(strings.Join(c.Hostnames, ", "))
 
 		builder.WriteRune(']')
 	}
 
-	if len(s.EmailAddresses) > 0 {
+	if len(c.EmailAddresses) > 0 {
 		builder.WriteString(", email_addresses=[")
 
-		builder.WriteString(strings.Join(s.Hostnames, ", "))
+		builder.WriteString(strings.Join(c.EmailAddresses, ", "))
 
 		builder.WriteRune(']')
 	}
@@ -428,3 +420,11 @@ type SignOpenPGPResponse struct {
 func (r *SignOpenPGPResponse) String() string {
 	return fmt.Sprintf("sig_data of %d bytes", len(r.SignatureData))
 }
+
+type ErrorResponse struct {
+	Message string `msgpack:"message"`
+}
+
+func (r *ErrorResponse) String() string {
+	return fmt.Sprintf("message=%s", r.Message)
+}