Add port specification to mysqldump

tasks.go

@@ -69,6 +69,7 @@ func (t *JobTaskScript) SetName(name string) {
 
 // JobTaskMySQL is a sqlite backup task that performs required pre and post tasks.
 type JobTaskMySQL struct {
+	Port       int      `hcl:"port,optional"`
 	Name       string   `hcl:"name,label"`
 	Hostname   string   `hcl:"hostname,optional"`
 	Database   string   `hcl:"database,optional"`
@@ -113,6 +114,10 @@ func (t JobTaskMySQL) GetPreTask() ExecutableTask {
 		command = append(command, "--host", t.Hostname)
 	}
 
+	if t.Port != 0 {
+		command = append(command, "--port", fmt.Sprintf("%d", t.Port))
+	}
+
 	if t.Username != "" {
 		command = append(command, "--user", t.Username)
 	}

tasks_test.go

@@ -15,6 +15,7 @@ func NewBufferedLogger(prefix string) (*bytes.Buffer, *log.Logger) {
 
 	return &outputBuffer, logger
 }
+
 func TestJobTaskScript(t *testing.T) {
 	t.Parallel()
 
@@ -149,6 +150,7 @@ func TestJobTaskSql(t *testing.T) {
 			task: main.JobTaskMySQL{
 				Name:       "simple",
 				Hostname:   "host",
+				Port:       3306,
 				Username:   "user",
 				Password:   "pass",
 				Database:   "db",
@@ -156,7 +158,8 @@ func TestJobTaskSql(t *testing.T) {
 				DumpToPath: "./simple.sql",
 			},
 			validationErr: nil,
-			preBackup:     "mysqldump --result-file ./simple.sql --host host --user user --password pass db table1 table2",
+			preBackup: "mysqldump --result-file ./simple.sql --host host --port 3306" +
+				" --user user --password pass db table1 table2",
 			postBackup:  "",
 			preRestore:  "",
 			postRestore: "mysql --host host --user user --password pass < ./simple.sql",