adding new attribute lock (#8)

app/converter/process/process.go

@@ -33,8 +33,12 @@ func (e *commandTimeoutError) Error() string {
 // run runs the given command. If timeout is reached or
 // something bad happened, returns an error.
 func (r *runner) run(command string, interpreter []string, timeout int) error {
-	r.mu.Lock()
-	defer r.mu.Unlock()
+	if config.HasLock() {
+		r.mu.Lock()
+		defer r.mu.Unlock()
+	} else {
+		logger.Warn("lock disabled")
+	}
 
 	binary := interpreter[0]
 	parameters := append(interpreter[1:], command)

app/converter/process/process_test.go

@@ -41,6 +41,8 @@ func TestCommandTimeoutError(t *testing.T) {
 func TestRun(t *testing.T) {
 	var cmd string
 
+	load("../../../_tests/configurations/gotenberg.yml")
+
 	// case 1: uses a simple command.
 	cmd = "echo Hello world"
 	if err := forest.run(cmd, strings.Fields("/bin/sh -c"), 30); err != nil {
@@ -58,6 +60,14 @@ func TestRun(t *testing.T) {
 	if err := forest.run(cmd, strings.Fields("/bin/sh -c"), 30); err == nil {
 		t.Errorf("Command '%s' should not have worked", cmd)
 	}
+
+	load("../../../_tests/configurations/no-lock-gotenberg.yml")
+
+	// case 4: uses a configuration with a no lock strategy.
+	cmd = "echo Hello world"
+	if err := forest.run(cmd, strings.Fields("/bin/sh -c"), 30); err != nil {
+		t.Errorf("Command '%s' should have worked", cmd)
+	}
 }
 
 func TestUnconv(t *testing.T) {