Coder/deepseek-harness
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fix(web): converge search runtime boundaries (round 8)

Browse Source
This commit is contained in:
Hypatia May
2026-07-27 14:02:35 +08:00
parent 40b68cd8d5
commit ba2925c704
21 changed files with 469 additions and 54 deletions
Download Patch File Download Diff File Expand all files Collapse all files

76
packages/host/apiproxy/src/api-proxy.ts
View File

@@ -41,8 +41,11 @@ const DEFAULT_MAX_MESSAGES = 50
/** Product contract: sidebar search returns one bounded page and no cursor. */
const SESSION_SEARCH_LIMIT = 20
/** Provider work budget: at most 100 pages × 20 hits = 2,000 inspected hits. */
const SESSION_SEARCH_PROVIDER_PAGE_LIMIT = 100
/** Provider work budget: at most 100 calls and 2,000 inspected hits. */
const SESSION_SEARCH_PROVIDER_CALL_LIMIT = 100
/** Product contract: snippets contain at most 240 Unicode code points. */
const SESSION_SEARCH_SNIPPET_CODE_POINT_LIMIT = 240
/** Bound cold-log stat fan-out so an aborted search stops launching new work. */
const COLD_SUMMARY_BATCH_SIZE = 16
@@ -55,6 +58,28 @@ function isAborted(signal: AbortSignal): boolean {
return signal.aborted
}
/** Copy at most the product-visible code-point prefix without splitting a surrogate pair. */
function boundedSessionSearchSnippet(value: unknown): string {
if (typeof value !== 'string') {
throw new Error('session search provider returned a non-string snippet')
}
let end = 0
for (
let count = 0;
count < SESSION_SEARCH_SNIPPET_CODE_POINT_LIMIT && end < value.length;
count++
) {
const first = value.charCodeAt(end)
const hasSurrogatePair = first >= 0xD800
&& first <= 0xDBFF
&& end + 1 < value.length
&& value.charCodeAt(end + 1) >= 0xDC00
&& value.charCodeAt(end + 1) <= 0xDFFF
end += hasSurrogatePair ? 2 : 1
}
return end === value.length ? value : value.slice(0, end)
}
/**
* Message-boundary pagination: count maxMessages surface messages backwards from
* the window tail; the cut is the starting seq of the oldest message group
@@ -648,24 +673,42 @@ export function createApiProxy(ctx: Context, defaults: ApiProxyDefaults): ApiPro
const acceptedIds = new Set<SessionId>()
const seenCursors = new Set<SessionSearchCursor>()
let cursor: SessionSearchCursor | undefined
let providerPageCount = 0
let providerCallCount = 0
while (authorized.length <= SESSION_SEARCH_LIMIT) {
if (isAborted(signal)) return cancelled()
if (providerPageCount >= SESSION_SEARCH_PROVIDER_PAGE_LIMIT) {
if (providerCallCount >= SESSION_SEARCH_PROVIDER_CALL_LIMIT) {
throw new Error(
`session search provider exceeded the ${SESSION_SEARCH_PROVIDER_PAGE_LIMIT}-page work budget`,
`session search provider exceeded the ${SESSION_SEARCH_PROVIDER_CALL_LIMIT}-call work budget`,
)
}
providerPageCount++
const page = await sessionQuery.searchSessions({
query: request.payload.query,
eventFilters: [
{ kind: 'type', values: ['user/message', 'assistant/message', 'steering/message'] },
{ kind: 'surface', values: ['current'] },
],
limit: SESSION_SEARCH_LIMIT,
...cursor === undefined ? {} : { cursor },
}, { signal })
providerCallCount++
const requestedCursor = cursor
let page
try {
page = await sessionQuery.searchSessions({
query: request.payload.query,
eventFilters: [
{ kind: 'type', values: ['user/message', 'assistant/message', 'steering/message'] },
{ kind: 'surface', values: ['current'] },
],
limit: SESSION_SEARCH_LIMIT,
...requestedCursor === undefined ? {} : { cursor: requestedCursor },
}, { signal })
} catch (error: unknown) {
if (isAborted(signal)) return cancelled()
if (
requestedCursor !== undefined
&& error instanceof SessionQueryError
&& error.code === 'SESSION_QUERY_STALE_CURSOR'
) {
authorized.length = 0
acceptedIds.clear()
seenCursors.clear()
cursor = undefined
continue
}
throw error
}
if (isAborted(signal)) return cancelled()
const providerItemCount = page.items.length
if (providerItemCount > SESSION_SEARCH_LIMIT) {
@@ -691,10 +734,11 @@ export function createApiProxy(ctx: Context, defaults: ApiProxyDefaults): ApiPro
|| !MESSAGE_TYPES.has(hit.bestMatch.type)
|| acceptedIds.has(hit.header.id)
) continue
const snippet = boundedSessionSearchSnippet(hit.bestMatch.snippet)
acceptedIds.add(hit.header.id)
authorized.push({
sessionId: hit.header.id,
snippet: hit.bestMatch.snippet,
snippet,
})
}
const nextCursor = page.nextCursor