static int apply_snapshot(struct fast_book_set *set, struct fast_book *dst, struct fast_message *msg)
{
struct fast_sequence *seq;
struct fast_field *field;
struct fast_message *md;
struct fast_book *book;
int i;
field = fast_get_field(msg, "SecurityID");
if (!field || field_state_empty(field))
goto fail;
book = fast_book_find(set, field->uint_value);
if (!book || book_has_flags(book, FAST_BOOK_ACTIVE))
goto done;
if (dst && dst->secid != book->secid)
goto done;
field = fast_get_field(msg, "MDEntries");
if (!field || field_state_empty(field))
goto fail;
seq = field->ptr_value;
if (field_state_empty(&seq->length))
goto fail;
field = fast_get_field(msg, "RptSeq");
if (!field || field_state_empty(field))
goto fail;
book->rptseq = field->uint_value;
book_clear_flags(book, FAST_BOOK_EMPTY);
book_add_mask(set, book);
for (i = 1; i <= seq->length.uint_value; i++) {
md = seq->elements + i;
if (md_snapshot(book, md))
goto fail;
}
if (!fast_book_is_valid(book)) {
if (!book_has_flags(book, FAST_BOOK_EMPTY))
goto fail;
} else {
book_add_flags(book, FAST_BOOK_ACTIVE);
}
done:
return 0;
fail:
return -1;
}
static int apply_snapshot(struct fast_book_set *set, struct fast_book *dst, struct fast_message *msg)
{
struct fast_sequence *seq;
struct fast_field *field;
struct fast_message *md;
struct fast_book *book;
int i;
field = fast_get_field(msg, "SecurityID");
if (field) {
if (field_state_empty(field))
goto fail;
book = fast_book_by_id(set, field->uint_value);
if (!book || book_has_flags(book, FAST_BOOK_ACTIVE))
goto done;
if (!book_has_flags(book, FAST_BOOK_JOIN))
goto done;
if (dst && dst->secid != book->secid)
goto done;
} else {
field = fast_get_field(msg, "Symbol");
if (!field || field_state_empty(field))
goto fail;
book = fast_book_by_symbol(set, field->string_value);
if (!book || book_has_flags(book, FAST_BOOK_ACTIVE))
goto done;
if (!book_has_flags(book, FAST_BOOK_JOIN))
goto done;
if (dst && strncmp(book->symbol, dst->symbol,
strlen(dst->symbol)))
goto done;
}
field = fast_get_field(msg, "MDEntries");
if (!field) {
field = fast_get_field(msg, "GroupMDEntries");
}
if (!field || field_state_empty(field))
goto fail;
seq = field->ptr_value;
if (field_state_empty(&seq->length))
goto fail;
if (!seq->length.uint_value)
goto done;
md = seq->elements;
field = fast_get_field(md, "TradingSessionID");
if (field) {
if (field_state_empty(field))
goto fail;
if (strncmp(book->session, field->string_value,
strlen(book->session)))
goto done;
}
field = fast_get_field(msg, "RptSeq");
if (!field || field_state_empty(field))
goto fail;
book->snpseq = field->uint_value;
book_clear_flags(book, FAST_BOOK_EMPTY);
book_add_mask(set, book);
for (i = 1; i <= seq->length.uint_value; i++) {
md = seq->elements + i;
if (md_snapshot(book, md))
goto fail;
}
if (!book_has_flags(book, FAST_BOOK_EMPTY))
book_add_flags(book, FAST_BOOK_ACTIVE);
done:
return 0;
fail:
return -1;
}