File size: 2,264 Bytes
e249c6d | 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 | /** Shared session persistence for agent attempt execution. */
import { patchSessionEntryCore } from "../../config/sessions/session-accessor.js";
import { mergeSessionSnapshotChanges } from "../../config/sessions/session-snapshot-merge.js";
import type { SessionEntry } from "../../config/sessions/types.js";
/** Parameters for merging and persisting a session entry update. */
type PersistSessionEntryParams = {
sessionStore: Record<string, SessionEntry>;
sessionKey: string;
storePath: string;
initialEntry: SessionEntry;
entry: SessionEntry;
shouldPersist?: (entry: SessionEntry | undefined) => boolean;
};
/** Persists one session entry while keeping the caller's in-memory store aligned. */
export async function persistAgentSession(
params: PersistSessionEntryParams,
): Promise<SessionEntry | undefined> {
let rejectedMissingEntry = false;
const persisted = await patchSessionEntryCore(
{ sessionKey: params.sessionKey, storePath: params.storePath },
(_entry, context) => {
const shouldPersistCurrent = params.shouldPersist?.(context.existingEntry);
if (!context.existingEntry && shouldPersistCurrent !== true) {
rejectedMissingEntry = true;
return null;
}
if (shouldPersistCurrent === false) {
rejectedMissingEntry = !context.existingEntry;
return null;
}
if (!context.existingEntry) {
return params.entry;
}
if (context.existingEntry.sessionId !== params.initialEntry.sessionId) {
return null;
}
// Agent turns persist broad snapshots. Project only this turn's changes
// so a stale snapshot cannot restore fields changed or cleared meanwhile.
return mergeSessionSnapshotChanges({
initial: params.initialEntry,
next: params.entry,
current: context.existingEntry,
});
},
{
fallbackEntry: params.sessionStore[params.sessionKey] ?? params.entry,
replaceEntry: true,
},
);
if (rejectedMissingEntry) {
delete params.sessionStore[params.sessionKey];
return undefined;
}
if (persisted) {
params.sessionStore[params.sessionKey] = persisted;
} else {
delete params.sessionStore[params.sessionKey];
}
return persisted ?? undefined;
}
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