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tweak, missed a case

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This commit is contained in:
J. Nick Koston
2026-01-23 22:27:38 -10:00
parent 70f95cb6a8
commit ae57e3e52f
2 changed files with 23 additions and 11 deletions
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4
esphome/components/template/text/template_text.cpp
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@@ -20,6 +20,10 @@ void TemplateText::setup() {
// Need std::string for pref_->setup() to fill from flash
std::string value{this->initial_value_ != nullptr ? this->initial_value_ : ""};
// For future hash migration: use migrate_entity_preference_() with:
// old_key = get_preference_hash() + extra
// new_key = get_preference_hash_v2() + extra
// See: https://github.com/esphome/backlog/issues/85
uint32_t key = this->get_preference_hash();
key += this->traits.get_min_length() << 2;
key += this->traits.get_max_length() << 4;

30
esphome/core/entity_base.cpp
View File

@@ -92,6 +92,23 @@ StringRef EntityBase::get_object_id_to(std::span<char, OBJECT_ID_MAX_LEN> buf) c
uint32_t EntityBase::get_object_id_hash() { return this->object_id_hash_; }
// Migrate preference data from old_key to new_key if they differ.
// This helper is exposed so callers with custom key computation (like TextPrefs)
// can use it for manual migration. See: https://github.com/esphome/backlog/issues/85
//
// FUTURE IMPLEMENTATION:
// This will require raw load/save methods on ESPPreferenceObject that take uint8_t* and size.
// void EntityBase::migrate_entity_preference_(size_t size, uint32_t old_key, uint32_t new_key) {
// if (old_key == new_key)
// return;
// auto old_pref = global_preferences->make_preference(size, old_key);
// auto new_pref = global_preferences->make_preference(size, new_key);
// SmallBufferWithHeapFallback<64> buffer(size);
// if (old_pref.load(buffer.data(), size)) {
// new_pref.save(buffer.data(), size);
// }
// }
ESPPreferenceObject EntityBase::make_entity_preference_(size_t size, uint32_t version) {
// This helper centralizes preference creation to enable fixing hash collisions.
// See: https://github.com/esphome/backlog/issues/85
@@ -103,22 +120,13 @@ ESPPreferenceObject EntityBase::make_entity_preference_(size_t size, uint32_t ve
// This causes entities to overwrite each other's stored preferences.
//
// FUTURE MIGRATION: When implementing get_preference_hash_v2() that hashes
// the original entity name (not sanitized object_id), migration logic goes here:
// the original entity name (not sanitized object_id):
//
// uint32_t old_key = this->get_preference_hash() ^ version;
// uint32_t new_key = this->get_preference_hash_v2() ^ version;
// if (old_key != new_key) {
// auto old_pref = global_preferences->make_preference(size, old_key);
// auto new_pref = global_preferences->make_preference(size, new_key);
// SmallBufferWithHeapFallback<64> buffer(size);
// if (old_pref.load(buffer.data(), size)) {
// new_pref.save(buffer.data(), size);
// }
// }
// this->migrate_entity_preference_(size, old_key, new_key);
// return global_preferences->make_preference(size, new_key);
//
// This will require raw load/save methods on ESPPreferenceObject (uint8_t*, size).
//
uint32_t key = this->get_preference_hash() ^ version;
return global_preferences->make_preference(size, key);
}