Add an aarch64 build

.gitlab-ci.yml

@@ -15,7 +15,7 @@ lint:
     - diff --color=always go.mod "${CI_PROJECT_DIR}/go.mod"
     - diff --color=always go.sum "${CI_PROJECT_DIR}/go.sum"
 
-build:
+build:x86:
   stage: build
   image: golang:latest
   before_script:
@@ -28,3 +28,18 @@ build:
     paths:
       - signaldctl
     expire_in: 1 month
+
+build:aarch64:
+  stage: build
+  tag: [arm-builder]
+  image: golang:latest
+  before_script:
+    - mkdir -p /go/src/gitlab.com/signald/signald-go
+    - cp -r * /go/src/gitlab.com/signald/signald-go
+    - cd /go/src/gitlab.com/signald/signald-go
+  script:
+    - go build -o "${CI_PROJECT_DIR}/signaldctl" ./cmd/signaldctl
+  artifacts:
+    paths:
+      - signaldctl
+    expire_in: 1 month

cmd/signaldctl/cmd/register.go

@@ -42,8 +42,8 @@ var registerCmd = &cobra.Command{
 		}
 		go s.Listen(nil)
 
-		r := <-s.GetResponseListener(requestID)
 		defer s.CloseResponseListener(requestID)
+		r := <-s.GetResponseListener(requestID)
 		account, err := r.Data.MarshalJSON()
 		if err != nil {
 			log.Fatal("error rendering response:", err)

cmd/signaldctl/cmd/verify.go

@@ -47,8 +47,8 @@ var verify = &cobra.Command{
 		}
 		go s.Listen(nil)
 
-		r := <-s.GetResponseListener(requestID)
 		defer s.CloseResponseListener(requestID)
+		r := <-s.GetResponseListener(requestID)
 		account, err := r.Data.MarshalJSON()
 		if err != nil {
 			log.Fatal("error rendering response:", err)

signald/signald.go

@@ -18,6 +18,7 @@ package signald
 import (
 	"bytes"
 	"encoding/json"
+	"fmt"
 	"io"
 	"log"
 	"net"
@@ -142,3 +143,10 @@ func (s *Signald) readNext() (b BasicResponse, err error) {
 	}
 	return
 }
+
+func (b BasicResponse) GetError() error {
+	if b.Error == nil {
+		return nil
+	}
+	return fmt.Errorf("signald error: %s", string(b.Error))
+}