源码快照 @ 2026-09-01 (source-only, 剔除非源码素材)

packages/runtime/src/history-compact-error.ts

@@ -0,0 +1,51 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import {
+  isContextBudgetExhaustedDetail,
+  type ContextBudgetExhaustedDetail,
+} from '@maka/core/events';
+
+export type MalformedHistoryCompactSummaryReason = Extract<
+  ContextBudgetExhaustedDetail,
+  `malformed_summary_${string}`
+>;
+
+export type HistoryCompactSummarizerFailureReason =
+  | 'output_length'
+  | 'input_too_large'
+  | 'provider_error'
+  | 'invalid_provider_state'
+  | MalformedHistoryCompactSummaryReason;
+
+export function isMalformedHistoryCompactSummaryReason(
+  reason: string,
+): reason is MalformedHistoryCompactSummaryReason {
+  return isContextBudgetExhaustedDetail(reason) && reason.startsWith('malformed_summary_');
+}
+
+export class HistoryCompactSummarizerError extends Error {
+  constructor(
+    readonly reason: HistoryCompactSummarizerFailureReason,
+    options?: ErrorOptions,
+  ) {
+    super(`History compact summarizer failed: ${reason}`, options);
+    this.name = 'HistoryCompactSummarizerError';
+  }
+}