serval-dna/meshmb.h
2017-04-19 14:46:37 +09:30

62 lines
2.3 KiB
C

#ifndef __SERVAL_DNA__MESHMB_H
#define __SERVAL_DNA__MESHMB_H
struct meshmb_feeds;
enum meshmb_send_status{
MESHMB_ERROR = -1,
MESHMB_OK = 0,
};
// details of a feed that you are following
struct meshmb_feed_details{
struct message_ply ply;
const char *name;
const char *last_message;
time_s_t timestamp;
};
// threaded feed iterator state
struct meshmb_activity_iterator{
struct meshmb_feeds *feeds;
struct message_ply_read ack_reader;
time_s_t ack_timestamp;
uint64_t ack_start;
struct feed_metadata *metadata;
struct message_ply_read msg_reader;
};
struct rhizome_manifest_field_assignment;
int meshmb_send(const keyring_identity *id, const char *message, size_t message_len,
unsigned nassignments, const struct rhizome_manifest_field_assignment *assignments);
// feed tracking
int meshmb_open(keyring_identity *id, struct meshmb_feeds **feeds);
void meshmb_close(struct meshmb_feeds *feeds);
// re-write metadata if required
// returns -1 on failure, or a generation number that is incremented only if something has changed.
int meshmb_flush(struct meshmb_feeds *feeds);
// set / clear follow flag for this feed
int meshmb_follow(struct meshmb_feeds *feeds, rhizome_bid_t *bid);
int meshmb_ignore(struct meshmb_feeds *feeds, rhizome_bid_t *bid);
// enumerate feeds, starting from restart_from
typedef int (*meshmb_callback) (struct meshmb_feed_details *details, void *context);
int meshmb_enum(struct meshmb_feeds *feeds, rhizome_bid_t *restart_from, meshmb_callback callback, void *context);
// enumerate messages, starting with the most recently received
struct meshmb_activity_iterator *meshmb_activity_open(struct meshmb_feeds *feeds);
int meshmb_activity_next(struct meshmb_activity_iterator *i);
int meshmb_activity_seek(struct meshmb_activity_iterator *i, uint64_t ack_offset, uint64_t msg_offset);
void meshmb_activity_close(struct meshmb_activity_iterator *i);
// update metadata of all feeds based on current rhizome contents (optionally call after opening)
int meshmb_update(struct meshmb_feeds *feeds);
// update metadata of a single feed, eg because of a new bundle or when about to read a single ply.
// it is the callers reponsibility to supply a reader and close it
int meshmb_bundle_update(struct meshmb_feeds *feeds, rhizome_manifest *m, struct message_ply_read *reader);
#endif