0.6 rust重构01

rust/crates/event-log/src/rules.rs

@@ -0,0 +1,10 @@
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct EventGenerationRule {
+    pub command_succeeded: bool,
+    pub changed_domain_state: bool,
+    pub rolled_back: bool,
+}
+
+pub fn should_emit_domain_event(rule: &EventGenerationRule) -> bool {
+    rule.command_succeeded && rule.changed_domain_state && !rule.rolled_back
+}