File size: 5,352 Bytes
f500658 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 | import type {
BranchSummaryEntry,
CompactionEntry,
CustomEntry,
Entry,
EntryScan,
EntryStructure,
MessageEntry,
} from "@earendil-works/pi-agent-core";
import { joinSqlFragments, type SqlQuery, sql } from "../sql.ts";
import type { SqliteDatabase, SqliteStatement } from "../types.ts";
export interface EntryRow {
id: string;
parent_id: string | null;
seq: number;
type: Entry["type"];
custom_type: string | null;
timestamp: number;
payload: string;
}
type StoredEntryPayload<TEntry extends Entry> = Omit<
TEntry,
"id" | "parentId" | "seq" | "timestamp" | "type" | "customType"
>;
function entryPayload(entry: Entry): StoredEntryPayload<Entry> {
switch (entry.type) {
case "message": {
const payload: StoredEntryPayload<MessageEntry> = {
message: entry.message,
...(entry.terminate === undefined ? {} : { terminate: entry.terminate }),
};
return payload;
}
case "compaction": {
const payload: StoredEntryPayload<CompactionEntry> = {
summary: entry.summary,
retainedTail: entry.retainedTail,
tokensBefore: entry.tokensBefore,
...(entry.details === undefined ? {} : { details: entry.details }),
...(entry.usage === undefined ? {} : { usage: entry.usage }),
fromHook: entry.fromHook,
};
return payload;
}
case "branch_summary": {
const payload: StoredEntryPayload<BranchSummaryEntry> = {
fromId: entry.fromId,
summary: entry.summary,
...(entry.details === undefined ? {} : { details: entry.details }),
...(entry.usage === undefined ? {} : { usage: entry.usage }),
fromHook: entry.fromHook,
};
return payload;
}
case "custom": {
const payload: StoredEntryPayload<CustomEntry> = entry.data === undefined ? {} : { data: entry.data };
return payload;
}
}
}
function parsePayload<TEntry extends Entry>(row: EntryRow): StoredEntryPayload<TEntry> {
return JSON.parse(row.payload) as StoredEntryPayload<TEntry>;
}
const INSERT_ENTRY_SQL = `INSERT INTO entries (session_id, id, parent_id, seq, type, custom_type, timestamp, payload)
VALUES (?, ?, ?, ?, ?, ?, ?, ?)`;
function entryRowParams(sessionId: string, entry: Entry): unknown[] {
return [
sessionId,
entry.id,
entry.parentId,
entry.seq,
entry.type,
entry.type === "custom" ? entry.customType : null,
entry.timestamp,
JSON.stringify(entryPayload(entry)),
];
}
export class EntryRowWriter {
private readonly insertStatement: SqliteStatement;
private readonly sessionId: string;
constructor(db: SqliteDatabase, sessionId: string) {
this.insertStatement = db.prepare(INSERT_ENTRY_SQL);
this.sessionId = sessionId;
}
insert(entry: Entry): void {
this.insertStatement.run(...entryRowParams(this.sessionId, entry));
}
}
export function insertEntryRow(db: SqliteDatabase, sessionId: string, entry: Entry): void {
db.prepare(INSERT_ENTRY_SQL).run(...entryRowParams(sessionId, entry));
}
export function decodeEntryRow(row: EntryRow): Entry {
const base = {
id: row.id,
parentId: row.parent_id,
seq: row.seq,
timestamp: row.timestamp,
};
switch (row.type) {
case "message":
return { ...base, type: "message", ...parsePayload<MessageEntry>(row) };
case "compaction":
return { ...base, type: "compaction", ...parsePayload<CompactionEntry>(row) };
case "branch_summary":
return { ...base, type: "branch_summary", ...parsePayload<BranchSummaryEntry>(row) };
case "custom":
if (row.custom_type === null) throw new Error(`Custom entry ${row.id} is missing custom_type`);
return { ...base, type: "custom", customType: row.custom_type, ...parsePayload<CustomEntry>(row) };
}
}
export function entryStructureFromRow(row: EntryRow): EntryStructure {
return {
id: row.id,
parentId: row.parent_id,
seq: row.seq,
timestamp: row.timestamp,
type: row.type,
...(row.custom_type === null ? {} : { customType: row.custom_type }),
};
}
export function readEntryRows(db: SqliteDatabase, sessionId: string, ids: readonly string[]): EntryRow[] {
if (ids.length === 0) return [];
const placeholders = joinSqlFragments(
ids.map((id) => sql`${id}`),
", ",
);
return sql`SELECT id, parent_id, seq, type, custom_type, timestamp, payload
FROM entries
WHERE session_id = ${sessionId} AND id IN (${placeholders})`.all<EntryRow>(db);
}
export function readAllEntryRows(db: SqliteDatabase, sessionId: string): EntryRow[] {
return sql`SELECT id, parent_id, seq, type, custom_type, timestamp, payload
FROM entries WHERE session_id = ${sessionId} ORDER BY seq ASC`.all<EntryRow>(db);
}
export function scanEntryRows(db: SqliteDatabase, sessionId: string, query: EntryScan): EntryRow[] {
const filters: SqlQuery[] = [sql`session_id = ${sessionId}`];
if (query.type !== undefined) filters.push(sql`type = ${query.type}`);
if (query.customType !== undefined) filters.push(sql`custom_type = ${query.customType}`);
if (query.fromSeq !== undefined) filters.push(sql`seq >= ${query.fromSeq}`);
if (query.toSeq !== undefined) filters.push(sql`seq <= ${query.toSeq}`);
const order = query.order === "desc" ? sql`ORDER BY seq DESC` : sql`ORDER BY seq ASC`;
const limit = query.limit === undefined ? sql`` : sql`LIMIT ${Math.max(0, query.limit)}`;
return sql`SELECT id, parent_id, seq, type, custom_type, timestamp, payload
FROM entries WHERE ${joinSqlFragments(filters, " AND ")} ${order} ${limit}`.all<EntryRow>(db);
}
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