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[core] Add zero-allocation object_id methods (#12578)

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This commit is contained in:
J. Nick Koston
2025-12-22 07:56:33 -10:00
committed by GitHub
parent 265ad9d264
commit 6383fe4598
8 changed files with 70 additions and 58 deletions
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esphome/components/api/api_connection.h
+4 -11
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@@ -323,17 +323,10 @@ class APIConnection final : public APIServerConnection {
APIConnection *conn, uint32_t remaining_size, bool is_single) {
// Set common fields that are shared by all entity types
msg.key = entity->get_object_id_hash();
// Try to use static reference first to avoid allocation
StringRef static_ref = entity->get_object_id_ref_for_api_();
// Store dynamic string outside the if-else to maintain lifetime
std::string object_id;
if (!static_ref.empty()) {
msg.set_object_id(static_ref);
} else {
// Dynamic case - need to allocate
object_id = entity->get_object_id();
msg.set_object_id(StringRef(object_id));
}
// Get object_id with zero heap allocation
// Static case returns direct reference, dynamic case uses buffer
char object_id_buf[OBJECT_ID_MAX_LEN];
msg.set_object_id(entity->get_object_id_to(object_id_buf));
if (entity->has_own_name()) {
msg.set_name(entity->get_name());