mirror of
git://jb55.com/damus
synced 2024-09-05 21:03:51 +00:00
606 lines
16 KiB
C
606 lines
16 KiB
C
#ifndef NOSTRDB_H
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#define NOSTRDB_H
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#include <inttypes.h>
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#include "cursor.h"
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#define NDB_PACKED_STR 0x1
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#define NDB_PACKED_ID 0x2
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#define NDB_FLAG_NOMIGRATE (1 << 0)
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#define NDB_FLAG_SKIP_NOTE_VERIFY (1 << 1)
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//#define DEBUG 1
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#ifdef DEBUG
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#define ndb_debug(...) printf(__VA_ARGS__)
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#else
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#define ndb_debug(...) (void)0
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#endif
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struct ndb_json_parser;
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struct ndb;
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// sorry, swift needs help with forward declared pointers like this
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struct ndb_t {
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struct ndb *ndb;
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};
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struct ndb_search_key
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{
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char search[24];
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unsigned char id[32];
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uint64_t timestamp;
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};
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enum ndb_dbs {
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NDB_DB_NOTE,
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NDB_DB_META,
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NDB_DB_PROFILE,
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NDB_DB_NOTE_ID,
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NDB_DB_PROFILE_PK, // profile pk index
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NDB_DB_NDB_META,
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NDB_DB_PROFILE_SEARCH,
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NDB_DB_PROFILE_LAST_FETCH,
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NDB_DB_NOTE_KIND, // note kind index
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NDB_DB_NOTE_TEXT, // note fulltext index
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NDB_DBS,
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};
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// common kinds. we collect stats on these in ndb_stat. mainly because I don't
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// want to deal with including a hashtable to the project.
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enum ndb_common_kind {
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NDB_CKIND_PROFILE,
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NDB_CKIND_TEXT,
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NDB_CKIND_CONTACTS,
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NDB_CKIND_DM,
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NDB_CKIND_DELETE,
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NDB_CKIND_REPOST,
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NDB_CKIND_REACTION,
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NDB_CKIND_ZAP,
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NDB_CKIND_ZAP_REQUEST,
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NDB_CKIND_NWC_REQUEST,
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NDB_CKIND_NWC_RESPONSE,
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NDB_CKIND_HTTP_AUTH,
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NDB_CKIND_LIST,
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NDB_CKIND_LONGFORM,
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NDB_CKIND_STATUS,
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NDB_CKIND_COUNT, // should always be last
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};
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struct ndb_stat_counts {
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size_t key_size;
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size_t value_size;
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size_t count;
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};
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struct ndb_stat {
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struct ndb_stat_counts dbs[NDB_DBS];
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struct ndb_stat_counts common_kinds[NDB_CKIND_COUNT];
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struct ndb_stat_counts other_kinds;
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};
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struct ndb_search {
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struct ndb_search_key *key;
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uint64_t profile_key;
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void *cursor; // MDB_cursor *
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};
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// required to keep a read
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struct ndb_txn {
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struct ndb_lmdb *lmdb;
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void *mdb_txn;
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};
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// From-client event types
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enum fce_type {
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NDB_FCE_EVENT = 0x1
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};
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// To-client event types
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enum tce_type {
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NDB_TCE_EVENT = 0x1,
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NDB_TCE_OK = 0x2,
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NDB_TCE_NOTICE = 0x3,
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NDB_TCE_EOSE = 0x4,
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};
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enum ndb_ingest_filter_action {
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NDB_INGEST_REJECT,
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NDB_INGEST_ACCEPT,
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NDB_INGEST_SKIP_VALIDATION
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};
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// function pointer for controlling what to do after we parse an id
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typedef enum ndb_idres (*ndb_id_fn)(void *, const char *);
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// id callback + closure data
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struct ndb_id_cb {
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ndb_id_fn fn;
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void *data;
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};
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struct ndb_str {
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unsigned char flag;
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union {
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const char *str;
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unsigned char *id;
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};
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};
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struct ndb_event {
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struct ndb_note *note;
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};
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struct ndb_command_result {
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int ok;
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const char *msg;
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int msglen;
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};
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// From-client event
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struct ndb_fce {
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enum fce_type evtype;
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union {
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struct ndb_event event;
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};
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};
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// To-client event
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struct ndb_tce {
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enum tce_type evtype;
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const char *subid;
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int subid_len;
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union {
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struct ndb_event event;
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struct ndb_command_result command_result;
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};
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};
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struct ndb_keypair {
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unsigned char pubkey[32];
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unsigned char secret[32];
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// this corresponds to secp256k1's keypair type. it's guaranteed to
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// be 96 bytes according to their docs. I don't want to depend on
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// the secp256k1 header here so we just use raw bytes.
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unsigned char pair[96];
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};
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#define MAX_TEXT_SEARCH_RESULTS 128
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#define MAX_TEXT_SEARCH_WORDS 8
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// unpacked form of the actual lmdb fulltext search key
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// see `ndb_make_text_search_key` for how the packed version is constructed
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struct ndb_text_search_key
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{
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int str_len;
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const char *str;
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uint64_t timestamp;
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uint64_t note_id;
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int word_index;
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};
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struct ndb_text_search_result {
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struct ndb_text_search_key key;
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int prefix_chars;
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};
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struct ndb_text_search_results {
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struct ndb_text_search_result results[MAX_TEXT_SEARCH_RESULTS];
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int num_results;
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};
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// these must be byte-aligned, they are directly accessing the serialized data
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// representation
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#pragma pack(push, 1)
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union ndb_packed_str {
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struct {
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char str[3];
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// we assume little endian everywhere. sorry not sorry.
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unsigned char flag; // NDB_PACKED_STR, etc
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} packed;
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uint32_t offset;
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unsigned char bytes[4];
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};
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struct ndb_tag {
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uint16_t count;
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union ndb_packed_str strs[0];
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};
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struct ndb_tags {
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uint16_t padding;
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uint16_t count;
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struct ndb_tag tag[0];
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};
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// v1
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struct ndb_note {
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unsigned char version; // v=1
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unsigned char padding[3]; // keep things aligned
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unsigned char id[32];
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unsigned char pubkey[32];
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unsigned char sig[64];
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uint64_t created_at;
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uint32_t kind;
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uint32_t content_length;
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union ndb_packed_str content;
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uint32_t strings;
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// nothing can come after tags since it contains variadic data
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struct ndb_tags tags;
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};
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#pragma pack(pop)
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typedef enum ndb_ingest_filter_action (*ndb_ingest_filter_fn)(void *, struct ndb_note *);
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struct ndb_builder {
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struct cursor mem;
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struct cursor note_cur;
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struct cursor strings;
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struct cursor str_indices;
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struct ndb_note *note;
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struct ndb_tag *current_tag;
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};
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struct ndb_iterator {
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struct ndb_note *note;
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struct ndb_tag *tag;
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// current outer index
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int index;
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};
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enum ndb_filter_fieldtype {
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NDB_FILTER_IDS = 1,
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NDB_FILTER_AUTHORS = 2,
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NDB_FILTER_KINDS = 3,
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NDB_FILTER_GENERIC = 4,
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NDB_FILTER_SINCE = 5,
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NDB_FILTER_UNTIL = 6,
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NDB_FILTER_LIMIT = 7,
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};
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#define NDB_NUM_FILTERS 7
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// when matching generic tags, we need to know if we're dealing with
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// a pointer to a 32-byte ID or a null terminated string
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enum ndb_generic_element_type {
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NDB_ELEMENT_UNKNOWN = 0,
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NDB_ELEMENT_STRING = 1,
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NDB_ELEMENT_ID = 2,
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};
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enum ndb_search_order {
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NDB_ORDER_DESCENDING,
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NDB_ORDER_ASCENDING,
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};
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union ndb_filter_element {
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const char *string;
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const unsigned char *id;
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uint64_t integer;
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};
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struct ndb_filter_field {
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enum ndb_filter_fieldtype type;
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enum ndb_generic_element_type elem_type;
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char generic; // for generic queries like #t
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};
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struct ndb_filter_elements {
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struct ndb_filter_field field;
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int count;
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union ndb_filter_element elements[0];
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};
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struct ndb_filter {
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struct cursor elem_buf;
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struct cursor data_buf;
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int num_elements;
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struct ndb_filter_elements *current;
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struct ndb_filter_elements *elements[NDB_NUM_FILTERS];
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};
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struct ndb_config {
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int flags;
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int ingester_threads;
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size_t mapsize;
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void *filter_context;
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ndb_ingest_filter_fn ingest_filter;
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};
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struct ndb_text_search_config {
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enum ndb_search_order order;
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int limit;
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};
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// CONFIG
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void ndb_default_config(struct ndb_config *);
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void ndb_config_set_ingest_threads(struct ndb_config *config, int threads);
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void ndb_config_set_flags(struct ndb_config *config, int flags);
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void ndb_config_set_mapsize(struct ndb_config *config, size_t mapsize);
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void ndb_config_set_ingest_filter(struct ndb_config *config, ndb_ingest_filter_fn fn, void *);
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// HELPERS
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int ndb_calculate_id(struct ndb_note *note, unsigned char *buf, int buflen);
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int ndb_sign_id(struct ndb_keypair *keypair, unsigned char id[32], unsigned char sig[64]);
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int ndb_create_keypair(struct ndb_keypair *key);
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int ndb_decode_key(const char *secstr, struct ndb_keypair *keypair);
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int ndb_note_verify(void *secp_ctx, unsigned char pubkey[32], unsigned char id[32], unsigned char signature[64]);
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// NDB
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int ndb_init(struct ndb **ndb, const char *dbdir, struct ndb_config *);
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int ndb_db_version(struct ndb *ndb);
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int ndb_process_event(struct ndb *, const char *json, int len);
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int ndb_process_events(struct ndb *, const char *ldjson, size_t len);
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int ndb_process_client_event(struct ndb *, const char *json, int len);
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int ndb_process_client_events(struct ndb *, const char *json, size_t len);
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int ndb_begin_query(struct ndb *, struct ndb_txn *);
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int ndb_search_profile(struct ndb_txn *txn, struct ndb_search *search, const char *query);
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int ndb_search_profile_next(struct ndb_search *search);
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void ndb_search_profile_end(struct ndb_search *search);
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int ndb_end_query(struct ndb_txn *);
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int ndb_write_last_profile_fetch(struct ndb *ndb, const unsigned char *pubkey, uint64_t fetched_at);
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uint64_t ndb_read_last_profile_fetch(struct ndb_txn *txn, const unsigned char *pubkey);
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void *ndb_get_profile_by_pubkey(struct ndb_txn *txn, const unsigned char *pubkey, size_t *len, uint64_t *primkey);
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void *ndb_get_profile_by_key(struct ndb_txn *txn, uint64_t key, size_t *len);
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uint64_t ndb_get_notekey_by_id(struct ndb_txn *txn, const unsigned char *id);
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uint64_t ndb_get_profilekey_by_pubkey(struct ndb_txn *txn, const unsigned char *id);
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struct ndb_note *ndb_get_note_by_id(struct ndb_txn *txn, const unsigned char *id, size_t *len, uint64_t *primkey);
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struct ndb_note *ndb_get_note_by_key(struct ndb_txn *txn, uint64_t key, size_t *len);
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void *ndb_get_note_meta(struct ndb_txn *txn, const unsigned char *id, size_t *len);
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void ndb_destroy(struct ndb *);
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// BUILDER
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int ndb_parse_json_note(struct ndb_json_parser *, struct ndb_note **);
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int ndb_client_event_from_json(const char *json, int len, struct ndb_fce *fce, unsigned char *buf, int bufsize, struct ndb_id_cb *cb);
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int ndb_ws_event_from_json(const char *json, int len, struct ndb_tce *tce, unsigned char *buf, int bufsize, struct ndb_id_cb *);
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int ndb_note_from_json(const char *json, int len, struct ndb_note **, unsigned char *buf, int buflen);
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int ndb_builder_init(struct ndb_builder *builder, unsigned char *buf, int bufsize);
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int ndb_builder_finalize(struct ndb_builder *builder, struct ndb_note **note, struct ndb_keypair *privkey);
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int ndb_builder_set_content(struct ndb_builder *builder, const char *content, int len);
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void ndb_builder_set_created_at(struct ndb_builder *builder, uint64_t created_at);
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void ndb_builder_set_sig(struct ndb_builder *builder, unsigned char *sig);
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void ndb_builder_set_pubkey(struct ndb_builder *builder, unsigned char *pubkey);
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void ndb_builder_set_id(struct ndb_builder *builder, unsigned char *id);
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void ndb_builder_set_kind(struct ndb_builder *builder, uint32_t kind);
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int ndb_builder_new_tag(struct ndb_builder *builder);
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int ndb_builder_push_tag_str(struct ndb_builder *builder, const char *str, int len);
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// FILTERS
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int ndb_filter_init(struct ndb_filter *);
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int ndb_filter_add_id_element(struct ndb_filter *, const unsigned char *id);
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int ndb_filter_add_int_element(struct ndb_filter *, uint64_t integer);
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int ndb_filter_add_str_element(struct ndb_filter *, const char *str);
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int ndb_filter_start_field(struct ndb_filter *, enum ndb_filter_fieldtype);
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int ndb_filter_start_generic_field(struct ndb_filter *, char tag);
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int ndb_filter_matches(struct ndb_filter *, struct ndb_note *);
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void ndb_filter_reset(struct ndb_filter *);
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void ndb_filter_end_field(struct ndb_filter *);
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void ndb_filter_free(struct ndb_filter *filter);
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// FULLTEXT SEARCH
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int ndb_text_search(struct ndb_txn *txn, const char *query, struct ndb_text_search_results *, struct ndb_text_search_config *);
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void ndb_default_text_search_config(struct ndb_text_search_config *);
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void ndb_text_search_config_set_order(struct ndb_text_search_config *, enum ndb_search_order);
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void ndb_text_search_config_set_limit(struct ndb_text_search_config *, int limit);
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// stats
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int ndb_stat(struct ndb *ndb, struct ndb_stat *stat);
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void ndb_stat_counts_init(struct ndb_stat_counts *counts);
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static inline struct ndb_str ndb_note_str(struct ndb_note *note,
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union ndb_packed_str *pstr)
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{
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struct ndb_str str;
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str.flag = pstr->packed.flag;
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if (str.flag == NDB_PACKED_STR) {
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str.str = pstr->packed.str;
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return str;
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}
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str.str = ((const char *)note) + note->strings + (pstr->offset & 0xFFFFFF);
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return str;
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}
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static inline struct ndb_str ndb_tag_str(struct ndb_note *note,
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struct ndb_tag *tag, int ind)
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{
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return ndb_note_str(note, &tag->strs[ind]);
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}
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static inline struct ndb_str ndb_iter_tag_str(struct ndb_iterator *iter,
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int ind)
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{
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return ndb_tag_str(iter->note, iter->tag, ind);
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}
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static inline unsigned char * ndb_note_id(struct ndb_note *note)
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{
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return note->id;
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}
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static inline unsigned char * ndb_note_pubkey(struct ndb_note *note)
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{
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return note->pubkey;
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}
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static inline unsigned char * ndb_note_sig(struct ndb_note *note)
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{
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return note->sig;
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}
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static inline uint32_t ndb_note_created_at(struct ndb_note *note)
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{
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return note->created_at;
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}
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static inline uint32_t ndb_note_kind(struct ndb_note *note)
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{
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return note->kind;
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}
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static inline const char *ndb_note_content(struct ndb_note *note)
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{
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return ndb_note_str(note, ¬e->content).str;
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}
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static inline uint32_t ndb_note_content_length(struct ndb_note *note)
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{
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return note->content_length;
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}
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static inline struct ndb_note * ndb_note_from_bytes(unsigned char *bytes)
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{
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struct ndb_note *note = (struct ndb_note *)bytes;
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if (note->version != 1)
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return 0;
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return note;
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}
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static inline union ndb_packed_str ndb_offset_str(uint32_t offset)
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{
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// ensure accidents like -1 don't corrupt our packed_str
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union ndb_packed_str str;
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// most significant byte is reserved for ndb_packtype
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str.offset = offset & 0xFFFFFF;
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return str;
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}
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static inline union ndb_packed_str ndb_char_to_packed_str(char c)
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{
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union ndb_packed_str str;
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str.packed.flag = NDB_PACKED_STR;
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str.packed.str[0] = c;
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str.packed.str[1] = '\0';
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return str;
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}
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static inline union ndb_packed_str ndb_chars_to_packed_str(char c1, char c2)
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{
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union ndb_packed_str str;
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str.packed.flag = NDB_PACKED_STR;
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str.packed.str[0] = c1;
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str.packed.str[1] = c2;
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str.packed.str[2] = '\0';
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return str;
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|
}
|
|
|
|
static inline void ndb_tags_iterate_start(struct ndb_note *note,
|
|
struct ndb_iterator *iter)
|
|
{
|
|
iter->note = note;
|
|
iter->tag = NULL;
|
|
iter->index = -1;
|
|
}
|
|
|
|
static inline int ndb_tags_iterate_next(struct ndb_iterator *iter)
|
|
{
|
|
if (iter->tag == NULL || iter->index == -1) {
|
|
iter->tag = iter->note->tags.tag;
|
|
iter->index = 0;
|
|
return iter->note->tags.count != 0;
|
|
}
|
|
|
|
struct ndb_tags *tags = &iter->note->tags;
|
|
|
|
if (++iter->index < tags->count) {
|
|
uint32_t tag_data_size = iter->tag->count * sizeof(iter->tag->strs[0]);
|
|
iter->tag = (struct ndb_tag *)(iter->tag->strs[0].bytes + tag_data_size);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline enum ndb_common_kind
|
|
ndb_kind_to_common_kind(int kind)
|
|
{
|
|
switch (kind)
|
|
{
|
|
case 0: return NDB_CKIND_PROFILE;
|
|
case 1: return NDB_CKIND_TEXT;
|
|
case 3: return NDB_CKIND_CONTACTS;
|
|
case 4: return NDB_CKIND_DM;
|
|
case 5: return NDB_CKIND_DELETE;
|
|
case 6: return NDB_CKIND_REPOST;
|
|
case 7: return NDB_CKIND_REACTION;
|
|
case 9735: return NDB_CKIND_ZAP;
|
|
case 9734: return NDB_CKIND_ZAP_REQUEST;
|
|
case 23194: return NDB_CKIND_NWC_REQUEST;
|
|
case 23195: return NDB_CKIND_NWC_RESPONSE;
|
|
case 27235: return NDB_CKIND_HTTP_AUTH;
|
|
case 30000: return NDB_CKIND_LIST;
|
|
case 30023: return NDB_CKIND_LONGFORM;
|
|
case 30315: return NDB_CKIND_STATUS;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
static inline const char *
|
|
ndb_kind_name(enum ndb_common_kind ck)
|
|
{
|
|
switch (ck) {
|
|
case NDB_CKIND_PROFILE: return "profile";
|
|
case NDB_CKIND_TEXT: return "text";
|
|
case NDB_CKIND_CONTACTS: return "contacts";
|
|
case NDB_CKIND_DM: return "dm";
|
|
case NDB_CKIND_DELETE: return "delete";
|
|
case NDB_CKIND_REPOST: return "repost";
|
|
case NDB_CKIND_REACTION: return "reaction";
|
|
case NDB_CKIND_ZAP: return "zap";
|
|
case NDB_CKIND_ZAP_REQUEST: return "zap_request";
|
|
case NDB_CKIND_NWC_REQUEST: return "nwc_request";
|
|
case NDB_CKIND_NWC_RESPONSE: return "nwc_response";
|
|
case NDB_CKIND_HTTP_AUTH: return "http_auth";
|
|
case NDB_CKIND_LIST: return "list";
|
|
case NDB_CKIND_LONGFORM: return "longform";
|
|
case NDB_CKIND_STATUS: return "status";
|
|
case NDB_CKIND_COUNT: return "unknown";
|
|
}
|
|
|
|
return "unknown";
|
|
}
|
|
|
|
static inline const char *
|
|
ndb_db_name(enum ndb_dbs db)
|
|
{
|
|
switch (db) {
|
|
case NDB_DB_NOTE:
|
|
return "note";
|
|
case NDB_DB_META:
|
|
return "note_metadata";
|
|
case NDB_DB_PROFILE:
|
|
return "profile";
|
|
case NDB_DB_NOTE_ID:
|
|
return "note_index";
|
|
case NDB_DB_PROFILE_PK:
|
|
return "profile_pubkey_index";
|
|
case NDB_DB_NDB_META:
|
|
return "nostrdb_metadata";
|
|
case NDB_DB_PROFILE_SEARCH:
|
|
return "profile_search";
|
|
case NDB_DB_PROFILE_LAST_FETCH:
|
|
return "profile_last_fetch";
|
|
case NDB_DB_NOTE_KIND:
|
|
return "note_kind_index";
|
|
case NDB_DB_NOTE_TEXT:
|
|
return "note_fulltext";
|
|
case NDB_DBS:
|
|
return "count";
|
|
}
|
|
|
|
return "unknown";
|
|
}
|
|
|
|
#endif
|