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[http_request] Reduce heap allocations in update check by parsing JSON directly from buffer (#13588)

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This commit is contained in:
J. Nick Koston
2026-02-10 13:53:53 -06:00
committed by GitHub
parent 1a6c67f92e
commit c03abcdb86
3 changed files with 17 additions and 16 deletions
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esphome/components/json/json_util.cpp
+6 -1
View File
@@ -25,8 +25,13 @@ std::string build_json(const json_build_t &f) {
}
bool parse_json(const std::string &data, const json_parse_t &f) {
// NOLINTNEXTLINE(clang-analyzer-cplusplus.NewDeleteLeaks) false positive with ArduinoJson
return parse_json(reinterpret_cast<const uint8_t *>(data.c_str()), data.size(), f);
}
bool parse_json(const uint8_t *data, size_t len, const json_parse_t &f) {
// NOLINTBEGIN(clang-analyzer-cplusplus.NewDeleteLeaks) false positive with ArduinoJson
JsonDocument doc = parse_json(reinterpret_cast<const uint8_t *>(data.c_str()), data.size());
JsonDocument doc = parse_json(data, len);
if (doc.overflowed() || doc.isNull())
return false;
return f(doc.as<JsonObject>());
esphome/components/json/json_util.h
+2
View File
@@ -50,6 +50,8 @@ std::string build_json(const json_build_t &f);
/// Parse a JSON string and run the provided json parse function if it's valid.
bool parse_json(const std::string &data, const json_parse_t &f);
/// Parse JSON from raw bytes and run the provided json parse function if it's valid.
bool parse_json(const uint8_t *data, size_t len, const json_parse_t &f);
/// Parse a JSON string and return the root JsonDocument (or an unbound object on error)
JsonDocument parse_json(const uint8_t *data, size_t len);