7. Save related circuits

Save the shared vtree once and each circuit separately. In this example the two circuits are backup rules: local or remote storage, and remote implies encryption.

7.1. Serialize

The API returns owned text and byte buffers. Write the vtree text and each buffer to your preferred files or storage; use tididi_bytes_data and tididi_bytes_len to obtain the bytes. Serialization borrows the circuits.

char *vtree_text = NULL;
TididiBytes *first = NULL, *second = NULL;
check(tididi_vtree_to_text(vtree, &vtree_text));
check(tididi_to_bytes(destination, &first));
check(tididi_to_bytes(encryption, &second));

7.2. Restore one shared domain

Parse the vtree once, then load both circuits onto that same handle. They can then be combined immediately.

TididiVtree *restored = NULL;
TididiCircuit *left = NULL, *right = NULL, *rules = NULL;
check(tididi_vtree_from_text(vtree_text, &restored));
check(tididi_from_bytes(restored, tididi_bytes_data(first), tididi_bytes_len(first), &left));
check(tididi_from_bytes(restored, tididi_bytes_data(second), tididi_bytes_len(second), &right));
check(tididi_and(left, right, &rules, NULL));
printf("Restored valid configurations: %" PRIu64 "\n", count(rules));

Output:

Restored valid configurations: 4

7.3. Complete program

Download persistence.c and the shared helper. The source includes cleanup for all handles. Both files are included in the source checkout.