// Format: [<result_page_size>][<paging_state>][<serial_consistency>][<timestamp>] // where: // <result_page_size> is a [int] // <paging_state> is a [bytes] // <serial_consistency> is a [short] // <timestamp> is a [long] // <keyspace> is a [string] int32_t Statement::encode_end(int version, RequestCallback* callback, BufferVec* bufs) const { int32_t length = 0; size_t paging_buf_size = 0; bool with_keyspace = this->with_keyspace(version); if (page_size() > 0) { paging_buf_size += sizeof(int32_t); // [int] } if (!paging_state().empty()) { paging_buf_size += sizeof(int32_t) + paging_state().size(); // [bytes] } if (callback->serial_consistency() != 0) { paging_buf_size += sizeof(uint16_t); // [short] } if (version >= 3 && callback->timestamp() != CASS_INT64_MIN) { paging_buf_size += sizeof(int64_t); // [long] } if (with_keyspace) { paging_buf_size += sizeof(uint16_t) + keyspace().size(); } if (paging_buf_size > 0) { bufs->push_back(Buffer(paging_buf_size)); length += paging_buf_size; Buffer& buf = bufs->back(); size_t pos = 0; if (page_size() >= 0) { pos = buf.encode_int32(pos, page_size()); } if (!paging_state().empty()) { pos = buf.encode_bytes(pos, paging_state().data(), paging_state().size()); } if (callback->serial_consistency() != 0) { pos = buf.encode_uint16(pos, callback->serial_consistency()); } if (version >= 3 && callback->timestamp() != CASS_INT64_MIN) { pos = buf.encode_int64(pos, callback->timestamp()); } if (with_keyspace) { pos = buf.encode_string(pos, keyspace().data(), keyspace().size()); } } return length; }
int QueryRequest::internal_encode(int version, RequestCallback* callback, BufferVec* bufs) const { int length = 0; uint8_t flags = this->flags(); // <query> [long string] + <consistency> [short] + <flags> [byte] size_t query_buf_size = sizeof(int32_t) + query_.size() + sizeof(uint16_t) + sizeof(uint8_t); size_t paging_buf_size = 0; if (elements_count() > 0) { // <values> = <n><value_1>...<value_n> query_buf_size += sizeof(uint16_t); // <n> [short] flags |= CASS_QUERY_FLAG_VALUES; } if (page_size() > 0) { paging_buf_size += sizeof(int32_t); // [int] flags |= CASS_QUERY_FLAG_PAGE_SIZE; } if (!paging_state().empty()) { paging_buf_size += sizeof(int32_t) + paging_state().size(); // [bytes] flags |= CASS_QUERY_FLAG_PAGING_STATE; } if (serial_consistency() != 0) { paging_buf_size += sizeof(uint16_t); // [short] flags |= CASS_QUERY_FLAG_SERIAL_CONSISTENCY; } if (version >= 3 && callback->timestamp() != CASS_INT64_MIN) { paging_buf_size += sizeof(int64_t); // [long] flags |= CASS_QUERY_FLAG_DEFAULT_TIMESTAMP; } { bufs->push_back(Buffer(query_buf_size)); length += query_buf_size; Buffer& buf = bufs->back(); size_t pos = buf.encode_long_string(0, query_.data(), query_.size()); pos = buf.encode_uint16(pos, callback->consistency()); pos = buf.encode_byte(pos, flags); if (has_names_for_values()) { if (version < 3) { LOG_ERROR("Protocol version %d does not support named values", version); return REQUEST_ERROR_UNSUPPORTED_PROTOCOL; } buf.encode_uint16(pos, value_names_.size()); length += copy_buffers_with_names(version, bufs, callback->encoding_cache()); } else if (elements_count() > 0) { buf.encode_uint16(pos, elements_count()); int32_t result = copy_buffers(version, bufs, callback); if (result < 0) return result; length += result; } } if (paging_buf_size > 0) { bufs->push_back(Buffer(paging_buf_size)); length += paging_buf_size; Buffer& buf = bufs->back(); size_t pos = 0; if (page_size() >= 0) { pos = buf.encode_int32(pos, page_size()); } if (!paging_state().empty()) { pos = buf.encode_bytes(pos, paging_state().data(), paging_state().size()); } if (serial_consistency() != 0) { pos = buf.encode_uint16(pos, serial_consistency()); } if (version >= 3 && callback->timestamp() != CASS_INT64_MIN) { pos = buf.encode_int64(pos, callback->timestamp()); } } return length; }
int32_t Statement::encode_begin(int version, uint16_t element_count, RequestCallback* callback, BufferVec* bufs) const { int32_t length = 0; size_t query_params_buf_size = 0; int32_t flags = flags_; if (callback->skip_metadata()) { flags |= CASS_QUERY_FLAG_SKIP_METADATA; } query_params_buf_size += sizeof(uint16_t); // <consistency> [short] if (version >= 5) { query_params_buf_size += sizeof(int32_t); // <flags> [int] } else { query_params_buf_size += sizeof(uint8_t); // <flags> [byte] } if (element_count > 0) { query_params_buf_size += sizeof(uint16_t); // <n> [short] flags |= CASS_QUERY_FLAG_VALUES; } if (page_size() > 0) { flags |= CASS_QUERY_FLAG_PAGE_SIZE; } if (!paging_state().empty()) { flags |= CASS_QUERY_FLAG_PAGING_STATE; } if (callback->serial_consistency() != 0) { flags |= CASS_QUERY_FLAG_SERIAL_CONSISTENCY; } if (version >= 3 && callback->timestamp() != CASS_INT64_MIN) { flags |= CASS_QUERY_FLAG_DEFAULT_TIMESTAMP; } if (with_keyspace(version)) { flags |= CASS_QUERY_FLAG_WITH_KEYSPACE; } bufs->push_back(Buffer(query_params_buf_size)); length += query_params_buf_size; Buffer& buf = bufs->back(); size_t pos = buf.encode_uint16(0, callback->consistency()); if (version >= 5) { pos = buf.encode_int32(pos, flags); } else { pos = buf.encode_byte(pos, flags); } if (element_count > 0) { buf.encode_uint16(pos, element_count); } return length; }
int ExecuteRequest::internal_encode(int version, Handler* handler, BufferVec* bufs) const { int length = 0; uint8_t flags = this->flags(); const std::string& prepared_id = prepared_->id(); // <id> [short bytes] + <consistency> [short] + <flags> [byte] size_t prepared_buf_size = sizeof(uint16_t) + prepared_id.size() + sizeof(uint16_t) + sizeof(uint8_t); size_t paging_buf_size = 0; if (elements_count() > 0) { // <values> = <n><value_1>...<value_n> prepared_buf_size += sizeof(uint16_t); // <n> [short] flags |= CASS_QUERY_FLAG_VALUES; } if (page_size() >= 0) { paging_buf_size += sizeof(int32_t); // [int] flags |= CASS_QUERY_FLAG_PAGE_SIZE; } if (!paging_state().empty()) { paging_buf_size += sizeof(int32_t) + paging_state().size(); // [bytes] flags |= CASS_QUERY_FLAG_PAGING_STATE; } if (serial_consistency() != 0) { paging_buf_size += sizeof(uint16_t); // [short] flags |= CASS_QUERY_FLAG_SERIAL_CONSISTENCY; } if (version >= 3 && handler->timestamp() != CASS_INT64_MIN) { paging_buf_size += sizeof(int64_t); // [long] flags |= CASS_QUERY_FLAG_DEFAULT_TIMESTAMP; } { bufs->push_back(Buffer(prepared_buf_size)); length += prepared_buf_size; Buffer& buf = bufs->back(); size_t pos = buf.encode_string(0, prepared_id.data(), prepared_id.size()); pos = buf.encode_uint16(pos, handler->consistency()); pos = buf.encode_byte(pos, flags); if (elements_count() > 0) { buf.encode_uint16(pos, elements_count()); int32_t result = copy_buffers(version, bufs, handler); if (result < 0) return result; length += result; } } if (paging_buf_size > 0) { bufs->push_back(Buffer(paging_buf_size)); length += paging_buf_size; Buffer& buf = bufs->back(); size_t pos = 0; if (page_size() >= 0) { pos = buf.encode_int32(pos, page_size()); } if (!paging_state().empty()) { pos = buf.encode_bytes(pos, paging_state().data(), paging_state().size()); } if (serial_consistency() != 0) { pos = buf.encode_uint16(pos, serial_consistency()); } if (version >= 3 && handler->timestamp() != CASS_INT64_MIN) { pos = buf.encode_int64(pos, handler->timestamp()); } } return length; }