@anthropic-ai/sdk
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The official TypeScript library for the Anthropic API
471 lines • 28.3 kB
JavaScript
"use strict";
var _SessionToolRunner_instances, _SessionToolRunner_consumed, _SessionToolRunner_controller, _SessionToolRunner_detachExternal, _SessionToolRunner_requestOpts, _SessionToolRunner_toolByName, _SessionToolRunner_logger, _SessionToolRunner_seen, _SessionToolRunner_answered, _SessionToolRunner_results, _SessionToolRunner_inFlightCount, _SessionToolRunner_onIdle, _SessionToolRunner_idleTimer, _SessionToolRunner_requestOptions, _SessionToolRunner_streamLoop, _SessionToolRunner_reconcile, _SessionToolRunner_ingestHistory, _SessionToolRunner_handleStreamEvent, _SessionToolRunner_armIdleTimer, _SessionToolRunner_disarmIdleTimer, _SessionToolRunner_execute, _SessionToolRunner_sendResult, _SessionToolRunner_drain;
Object.defineProperty(exports, "__esModule", { value: true });
exports.SessionToolRunner = exports.DEFAULT_MAX_IDLE_MS = exports.MANAGED_AGENTS_BETA = void 0;
const tslib_1 = require("../../internal/tslib.js");
const error_1 = require("../../core/error.js");
const log_1 = require("../../internal/utils/log.js");
const sleep_1 = require("../../internal/utils/sleep.js");
const backoff_1 = require("../../internal/utils/backoff.js");
const abort_1 = require("../../internal/utils/abort.js");
const async_queue_1 = require("../../internal/utils/async-queue.js");
const headers_1 = require("../../internal/headers.js");
const BetaRunnableTool_1 = require("./BetaRunnableTool.js");
/** Beta header for the managed-agents API. */
exports.MANAGED_AGENTS_BETA = 'managed-agents-2026-04-01';
/** `x-stainless-helper` value identifying this helper in SDK telemetry. */
const HELPER_NAME = 'SessionToolRunner';
const STREAM_BACKOFF_START_MS = 500;
const STREAM_BACKOFF_CAP_MS = 10000;
const TOOL_TIMEOUT_MS = 120000;
const DRAIN_TIMEOUT_MS = 30000;
const SEND_RETRIES = 3;
/** Default {@link SessionToolRunnerOptions.maxIdleMs}: 60 seconds. */
exports.DEFAULT_MAX_IDLE_MS = 60000;
/** Returns true if `ev` is a `session.status_idle` with `stop_reason` `end_turn`. */
function isEndTurnIdle(ev) {
return ev.type === 'session.status_idle' && ev.stop_reason?.type === 'end_turn';
}
/**
* The sessions-side counterpart to `client.beta.messages.toolRunner`: an
* async-iterable that attaches to a managed-agents session, executes every
* incoming `agent.tool_use` and `agent.custom_tool_use` event against a local
* tool registry, posts the matching result back (`user.tool_result` for the
* former, `user.custom_tool_result` for the latter), and yields one
* {@link DispatchedToolCall} per completed call. Server-side `agent.mcp_tool_use`
* calls are not dispatched. Internally drives event-stream reconnect and result
* posting.
*
* Iteration ends when the session terminates (`session.status_terminated` /
* `session.deleted`), when the consumer `break`s out of the loop or aborts the
* supplied signal, or — once the session has gone idle with
* `stop_reason.type === "end_turn"` — when `maxIdleMs` elapses with no new
* event (any new event resets that countdown; it re-arms on the next `end_turn`
* idle; `maxIdleMs <= 0` disables it). The `finally` branch drains any in-flight
* tool calls and runs each tool's `close()` cleanup hook. It does *not* touch
* the work-item lease — wrap it in an `EnvironmentWorker` if you need
* heartbeating / force-stop.
*
* @example
* ```ts
* import { betaAgentToolset20260401 } from '@anthropic-ai/sdk/tools/agent-toolset/node';
*
* for await (const call of client.beta.sessions.events.toolRunner(work.data.id, {
* tools: [...betaAgentToolset20260401({ workdir }), myTool],
* })) {
* console.log(`${call.name} -> ${call.isError ? 'error' : 'ok'}`);
* }
* ```
*/
class SessionToolRunner {
constructor(sessionId, opts) {
_SessionToolRunner_instances.add(this);
_SessionToolRunner_consumed.set(this, false);
_SessionToolRunner_controller.set(this, void 0);
_SessionToolRunner_detachExternal.set(this, void 0);
_SessionToolRunner_requestOpts.set(this, void 0);
_SessionToolRunner_toolByName.set(this, void 0);
_SessionToolRunner_logger.set(this, void 0);
_SessionToolRunner_seen.set(this, new Set());
_SessionToolRunner_answered.set(this, new Set());
_SessionToolRunner_results.set(this, new async_queue_1.AsyncQueue());
_SessionToolRunner_inFlightCount.set(this, 0);
_SessionToolRunner_onIdle.set(this, null);
// When the session is idle past an `end_turn`, the pending stop timer; cleared
// by any new event. Event-driven — there is no polling watchdog.
_SessionToolRunner_idleTimer.set(this, void 0);
this.client = opts.client;
this.sessionId = sessionId;
this.tools = opts.tools;
this.maxIdleMs = opts.maxIdleMs ?? exports.DEFAULT_MAX_IDLE_MS;
tslib_1.__classPrivateFieldSet(this, _SessionToolRunner_logger, (0, log_1.loggerFor)(opts.client), "f");
tslib_1.__classPrivateFieldSet(this, _SessionToolRunner_toolByName, new Map(opts.tools.map((t) => [(0, BetaRunnableTool_1.toolName)(t), t])), "f");
tslib_1.__classPrivateFieldSet(this, _SessionToolRunner_controller, new AbortController(), "f");
tslib_1.__classPrivateFieldSet(this, _SessionToolRunner_detachExternal, (0, abort_1.linkAbort)(opts.signal, tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_controller, "f")), "f");
tslib_1.__classPrivateFieldSet(this, _SessionToolRunner_requestOpts, opts.requestOptions, "f");
}
/** Read-only view of this runner's abort signal. */
get signal() {
return tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_controller, "f").signal;
}
/** Abort the runner. Background tasks will wind down and `for await` will exit cleanly. */
abort() {
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_controller, "f").abort();
}
async *[(_SessionToolRunner_consumed = new WeakMap(), _SessionToolRunner_controller = new WeakMap(), _SessionToolRunner_detachExternal = new WeakMap(), _SessionToolRunner_requestOpts = new WeakMap(), _SessionToolRunner_toolByName = new WeakMap(), _SessionToolRunner_logger = new WeakMap(), _SessionToolRunner_seen = new WeakMap(), _SessionToolRunner_answered = new WeakMap(), _SessionToolRunner_results = new WeakMap(), _SessionToolRunner_inFlightCount = new WeakMap(), _SessionToolRunner_onIdle = new WeakMap(), _SessionToolRunner_idleTimer = new WeakMap(), _SessionToolRunner_instances = new WeakSet(), Symbol.asyncIterator)]() {
if (tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_consumed, "f")) {
throw new error_1.AnthropicError('Cannot iterate over a consumed SessionToolRunner');
}
tslib_1.__classPrivateFieldSet(this, _SessionToolRunner_consumed, true, "f");
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_logger, "f").info('session tool runner starting', {
component: 'session-tool-runner',
session_id: this.sessionId,
});
// The one background promise: drives the event stream and dispatches tools.
// Its `.catch` aborts the controller so the main loop unwinds.
const streamPromise = tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_instances, "m", _SessionToolRunner_streamLoop).call(this).catch((e) => {
if (!tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_controller, "f").signal.aborted) {
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_logger, "f").error('stream loop failed', { error: String(e) });
}
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_controller, "f").abort();
});
try {
// Phase 1: yield results as they arrive. `next(signal)` resolves
// `done: true` when the controller aborts — cancellation is handled in
// the queue read, no outer `Promise.race` needed.
while (true) {
const next = await tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_results, "f").next(tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_controller, "f").signal);
if (next.done)
break;
yield next.value;
}
// Phase 2: let the stream loop settle (and push any final results), then
// drain whatever is still queued before closing.
await streamPromise;
let pending;
while ((pending = tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_results, "f").tryShift()) !== undefined) {
yield pending;
}
}
finally {
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_controller, "f").abort();
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_instances, "m", _SessionToolRunner_disarmIdleTimer).call(this);
// Re-await defensively in case the consumer broke out of phase 1 before
// phase 2 ran — a no-op if it already settled.
await streamPromise;
try {
await tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_instances, "m", _SessionToolRunner_drain).call(this);
}
catch (e) {
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_logger, "f").warn('drain failed', { error: String(e) });
}
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_results, "f").close();
for (const t of this.tools) {
try {
// `close` is typed `() => Promisable<void>`, so a single `await`
// covers both the sync and async return.
await t.close?.();
}
catch (e) {
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_logger, "f").warn('tool.close failed', { tool: (0, BetaRunnableTool_1.toolName)(t), error: String(e) });
}
}
// Detach from the external signal so the consumer can drop their signal
// reference without leaking this iterator instance.
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_detachExternal, "f").call(this);
}
}
}
exports.SessionToolRunner = SessionToolRunner;
_SessionToolRunner_requestOptions = function _SessionToolRunner_requestOptions() {
return {
...tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_requestOpts, "f"),
headers: (0, headers_1.buildHeaders)([{ 'x-stainless-helper': HELPER_NAME }, tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_requestOpts, "f")?.headers]),
signal: tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_controller, "f").signal,
};
}, _SessionToolRunner_streamLoop =
// ===== event stream =====
async function _SessionToolRunner_streamLoop() {
const ctrl = tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_controller, "f");
let backoff = STREAM_BACKOFF_START_MS;
while (!ctrl.signal.aborted) {
try {
// Establish the event stream *before* reconciling history, so an event
// emitted in the gap between listing and attaching is buffered on the
// stream rather than lost. `seen`/`answered` dedup any event that shows
// up both in the reconcile pass and on the live stream.
const stream = await this.client.beta.sessions.events.stream(this.sessionId, {}, tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_instances, "m", _SessionToolRunner_requestOptions).call(this));
await tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_instances, "m", _SessionToolRunner_reconcile).call(this);
for await (const ev of stream) {
backoff = STREAM_BACKOFF_START_MS;
if (await tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_instances, "m", _SessionToolRunner_handleStreamEvent).call(this, ev))
return;
}
}
catch (e) {
// An abort throws to unwind the caller (the iterator's `streamPromise`
// `.catch`) rather than returning early and letting it carry on.
ctrl.signal.throwIfAborted();
if ((0, backoff_1.isFatal4xx)(e)) {
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_logger, "f").error('permanent stream failure, shutting down', { error: String(e) });
ctrl.abort();
throw e;
}
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_logger, "f").warn('stream disconnected, reconnecting', {
error: String(e),
backoff_ms: backoff,
});
}
ctrl.signal.throwIfAborted();
await (0, sleep_1.sleep)(backoff, ctrl.signal);
backoff = Math.min(backoff * 2, STREAM_BACKOFF_CAP_MS);
}
}, _SessionToolRunner_reconcile =
/**
* Read full history before dispatching so a `tool_use` whose result appears
* later in the same history is not re-executed. Runs after the live stream is
* already attached (see {@link SessionToolRunner.#streamLoop}).
*/
async function _SessionToolRunner_reconcile() {
const ctrl = tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_controller, "f");
const pending = [];
let lastWasEndTurn = false;
try {
for await (const ev of this.client.beta.sessions.events.list(this.sessionId, { limit: 1000 }, tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_instances, "m", _SessionToolRunner_requestOptions).call(this))) {
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_instances, "m", _SessionToolRunner_ingestHistory).call(this, ev, pending);
lastWasEndTurn = isEndTurnIdle(ev);
}
}
catch (e) {
// An abort throws to unwind the caller; a real list failure is
// non-fatal — undo the speculative `seen` entries and let `#streamLoop`
// carry on with the live stream.
ctrl.signal.throwIfAborted();
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_logger, "f").warn('reconcile list failed', { error: String(e) });
// If list itself failed, undo the speculative `seen` entries so the next
// reconcile pass (or the live stream) can pick them up. Leave the idle
// timer untouched — the history we read may be incomplete.
for (const ev of pending)
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_seen, "f").delete(ev.id);
return;
}
const unanswered = pending.filter((ev) => !tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_answered, "f").has(ev.id));
// If the most recent event in history is an `end_turn` idle and there's no
// outstanding tool work, the session is done — arm the idle timer so the
// runner stops even if that `end_turn` arrived during a disconnect.
if (lastWasEndTurn && unanswered.length === 0)
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_instances, "m", _SessionToolRunner_armIdleTimer).call(this);
else
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_instances, "m", _SessionToolRunner_disarmIdleTimer).call(this);
for (const ev of unanswered)
await tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_instances, "m", _SessionToolRunner_execute).call(this, ev);
}, _SessionToolRunner_ingestHistory = function _SessionToolRunner_ingestHistory(ev, pending) {
if (ev.type === 'agent.tool_use' || ev.type === 'agent.custom_tool_use') {
// Mark the event seen so a replay on the live stream is not dispatched
// twice, but decide whether it still needs executing from `answered`, not
// `seen`: a call whose result post failed is seen-but-unanswered, and must
// be retried on the next reconcile pass rather than silently dropped.
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_seen, "f").add(ev.id);
if (!tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_answered, "f").has(ev.id))
pending.push(ev);
}
else if (ev.type === 'user.tool_result') {
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_answered, "f").add(ev.tool_use_id);
}
else if (ev.type === 'user.custom_tool_result') {
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_answered, "f").add(ev.custom_tool_use_id);
}
}, _SessionToolRunner_handleStreamEvent =
/** Returns true when the runner should exit. */
async function _SessionToolRunner_handleStreamEvent(ev) {
// Arm/disarm the idle timer: an `end_turn` idle starts the grace countdown;
// any other event cancels it.
if (isEndTurnIdle(ev))
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_instances, "m", _SessionToolRunner_armIdleTimer).call(this);
else
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_instances, "m", _SessionToolRunner_disarmIdleTimer).call(this);
switch (ev.type) {
case 'agent.tool_use':
case 'agent.custom_tool_use':
if (!tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_seen, "f").has(ev.id)) {
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_seen, "f").add(ev.id);
await tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_instances, "m", _SessionToolRunner_execute).call(this, ev);
}
return false;
case 'user.tool_result':
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_answered, "f").add(ev.tool_use_id);
return false;
case 'user.custom_tool_result':
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_answered, "f").add(ev.custom_tool_use_id);
return false;
case 'session.status_terminated':
case 'session.deleted':
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_logger, "f").info('session terminated', {
component: 'session-tool-runner',
session_id: this.sessionId,
});
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_controller, "f").abort();
return true;
default:
return false;
}
}, _SessionToolRunner_armIdleTimer = function _SessionToolRunner_armIdleTimer() {
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_instances, "m", _SessionToolRunner_disarmIdleTimer).call(this);
if (this.maxIdleMs <= 0)
return;
tslib_1.__classPrivateFieldSet(this, _SessionToolRunner_idleTimer, setTimeout(() => {
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_logger, "f").info('session idle after end_turn; stopping', {
component: 'session-tool-runner',
session_id: this.sessionId,
max_idle_ms: this.maxIdleMs,
});
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_controller, "f").abort();
}, this.maxIdleMs), "f");
}, _SessionToolRunner_disarmIdleTimer = function _SessionToolRunner_disarmIdleTimer() {
if (tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_idleTimer, "f") !== undefined) {
clearTimeout(tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_idleTimer, "f"));
tslib_1.__classPrivateFieldSet(this, _SessionToolRunner_idleTimer, undefined, "f");
}
}, _SessionToolRunner_execute =
// ===== tool execution =====
async function _SessionToolRunner_execute(ev) {
var _a, _b;
if (tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_answered, "f").has(ev.id))
return;
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_logger, "f").info('executing tool', {
component: 'session-tool-runner',
session_id: this.sessionId,
tool: ev.name,
tool_use_id: ev.id,
});
tslib_1.__classPrivateFieldSet(this, _SessionToolRunner_inFlightCount, (_a = tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_inFlightCount, "f"), _a++, _a), "f");
try {
const tool = tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_toolByName, "f").get(ev.name);
if (!tool) {
// Skip (split-client partial fulfilment): a name this runner
// is not registered for belongs to the other client servicing this
// session (typically the customer's app backend handling custom tools).
// Post NO result, do not mark it answered, and leave the tool_use_id
// pending for its owner — claiming it would corrupt the conversation.
// Still yield the call so the consumer can observe the unowned
// dispatch; nothing was sent, so `posted`/`isError` stay false and no
// `result` event is populated. The id stays unanswered, so reconcile
// keeps it out of the idle/end-turn accounting and re-surfaces it after
// a reconnect until its owner answers it.
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_logger, "f").info('tool not owned by this runner; leaving the tool_use_id pending for its owner', {
component: 'session-tool-runner',
session_id: this.sessionId,
tool: ev.name,
tool_use_id: ev.id,
});
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_results, "f").push({ event: ev, toolUseId: ev.id, name: ev.name, isError: false, posted: false });
return;
}
let content;
let isError;
// Per-tool controller: aborts on the runner's own signal *or* the
// per-tool timeout, so an in-flight tool stops promptly when the runner
// is aborted instead of running until the timeout.
const toolCtrl = new AbortController();
const detachTool = (0, abort_1.linkAbort)(tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_controller, "f").signal, toolCtrl);
const timer = setTimeout(() => toolCtrl.abort(), TOOL_TIMEOUT_MS);
try {
// Pass the source `agent.tool_use` / `agent.custom_tool_use` event
// straight through as the run context's `toolUse` — it is a union
// member of `BetaToolUse`, no Messages-block adapter needed.
const outcome = await (0, BetaRunnableTool_1.runRunnableTool)(tool, ev.input, {
toolUse: ev,
toolUseBlock: ev,
signal: toolCtrl.signal,
});
content = outcome.content;
isError = outcome.isError;
}
finally {
clearTimeout(timer);
detachTool();
}
// Answer with the result event that matches the call kind: a
// `user.tool_result` for an `agent.tool_use`, a `user.custom_tool_result`
// for an `agent.custom_tool_use`. Posting the wrong one leaves the call
// unanswered and the session stuck.
const result = buildResultEvent(ev, isError, toSessionContent(content));
const posted = await tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_instances, "m", _SessionToolRunner_sendResult).call(this, result, ev.id);
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_results, "f").push({
event: ev,
result,
toolUseId: ev.id,
name: ev.name,
isError,
posted,
});
}
finally {
tslib_1.__classPrivateFieldSet(this, _SessionToolRunner_inFlightCount, (_b = tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_inFlightCount, "f"), _b--, _b), "f");
if (tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_inFlightCount, "f") === 0)
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_onIdle, "f")?.call(this);
}
}, _SessionToolRunner_sendResult = async function _SessionToolRunner_sendResult(result, toolUseId) {
const ctrl = tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_controller, "f");
let lastErr;
for (let i = 0; i < SEND_RETRIES; i++) {
// An abort throws to unwind the caller rather than returning a
// `posted: false` result the iterator would carry on past.
ctrl.signal.throwIfAborted();
try {
await this.client.beta.sessions.events.send(this.sessionId, { events: [result] }, tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_instances, "m", _SessionToolRunner_requestOptions).call(this));
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_answered, "f").add(toolUseId);
return true;
}
catch (e) {
lastErr = e;
// Only short-circuit on a permanent 4xx; 408/409/429 deserve the
// remaining retries (aligned with the core client's retry policy).
if ((0, backoff_1.isFatal4xx)(e))
break;
// Back off only *between* attempts — never after the final one, since
// there is no further try left to wait for.
if (i < SEND_RETRIES - 1)
await (0, sleep_1.sleep)((i + 1) * 1000, ctrl.signal);
}
}
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_logger, "f").error('failed to send tool result', {
tool_use_id: toolUseId,
error: String(lastErr),
});
return false;
}, _SessionToolRunner_drain =
/** Wait (bounded) for in-flight tool executions to finish during teardown. */
async function _SessionToolRunner_drain() {
if (tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_inFlightCount, "f") === 0)
return;
await Promise.race([new Promise((r) => (tslib_1.__classPrivateFieldSet(this, _SessionToolRunner_onIdle, r, "f"))), (0, sleep_1.sleep)(DRAIN_TIMEOUT_MS)]);
tslib_1.__classPrivateFieldSet(this, _SessionToolRunner_onIdle, null, "f");
if (tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_inFlightCount, "f") > 0) {
tslib_1.__classPrivateFieldGet(this, _SessionToolRunner_logger, "f").warn('drain timeout exceeded');
}
};
/**
* Build the result event that answers `ev`: a `user.tool_result` for a builtin
* `agent.tool_use`, a `user.custom_tool_result` for a custom
* `agent.custom_tool_use`. The two `(use, result)` pairs are distinct API event
* types and must be matched exactly — a `user.tool_result` does not answer a
* custom tool call.
*/
function buildResultEvent(ev, isError, content) {
if (ev.type === 'agent.custom_tool_use') {
return { type: 'user.custom_tool_result', custom_tool_use_id: ev.id, is_error: isError, content };
}
return { type: 'user.tool_result', tool_use_id: ev.id, is_error: isError, content };
}
// The Messages-API tool-result block union is wider than the Sessions-API
// tool_result content union; pass through text/image/document and stringify
// anything else so a BetaRunnableTool authored for toolRunner still works here.
function toSessionContent(content) {
if (typeof content === 'string')
return [{ type: 'text', text: content || '(no output)' }];
const out = content.map((b) => {
if (b.type === 'text')
return { type: 'text', text: b.text || '(no output)' };
if (b.type === 'image' || b.type === 'document')
return b;
if (b.type === 'search_result') {
// The Messages `search_result` block param maps field-for-field onto the
// Sessions `BetaManagedAgentsSearchResultBlock`; map it explicitly rather
// than letting it fall through to the JSON.stringify branch (which would
// bury a structured result inside a text block). `citations` is required
// on the Sessions side and optional on the Messages side — default the
// flag to `false` when the producer left it unset.
return {
type: 'search_result',
source: b.source,
title: b.title,
content: b.content.map((c) => ({ type: 'text', text: c.text })),
citations: { enabled: b.citations?.enabled ?? false },
};
}
return { type: 'text', text: JSON.stringify(b) };
});
return out.length > 0 ? out : [{ type: 'text', text: '(no output)' }];
}
//# sourceMappingURL=SessionToolRunner.js.map