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fix(coding-agent): handle auto-compaction failures gracefully

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When auto-compaction fails (e.g., quota exceeded), emit the error via
the auto_compaction_end event instead of throwing. The UI now displays
the error message, allowing users to take action (switch models, wait
for quota reset, etc.) instead of crashing.

fixes #792
This commit is contained in:
Mario Zechner 2026-01-16 23:13:26 +01:00
parent 5c59caee4e
commit 20f5fcc79d
4 changed files with 25 additions and 8 deletions
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26
packages/coding-agent/src/core/agent-session.ts
View file

@ -62,7 +62,13 @@ import type { BashOperations } from "./tools/bash.js";
export type AgentSessionEvent =
| AgentEvent
| { type: "auto_compaction_start"; reason: "threshold" | "overflow" }
| { type: "auto_compaction_end"; result: CompactionResult | undefined; aborted: boolean; willRetry: boolean }
| {
type: "auto_compaction_end";
result: CompactionResult | undefined;
aborted: boolean;
willRetry: boolean;
errorMessage?: string;
}
| { type: "auto_retry_start"; attempt: number; maxAttempts: number; delayMs: number; errorMessage: string }
| { type: "auto_retry_end"; success: boolean; attempt: number; finalError?: string };
@ -1544,13 +1550,17 @@ export class AgentSession {
}, 100);
}
} catch (error) {
this._emit({ type: "auto_compaction_end", result: undefined, aborted: false, willRetry: false });
if (reason === "overflow") {
throw new Error(
`Context overflow: ${error instanceof Error ? error.message : "compaction failed"}. Your input may be too large for the context window.`,
);
}
const errorMessage = error instanceof Error ? error.message : "compaction failed";
this._emit({
type: "auto_compaction_end",
result: undefined,
aborted: false,
willRetry: false,
errorMessage:
reason === "overflow"
? `Context overflow recovery failed: ${errorMessage}`
: `Auto-compaction failed: ${errorMessage}`,
});
} finally {
this._autoCompactionAbortController = undefined;
}

4
packages/coding-agent/src/modes/interactive/interactive-mode.ts
View file

@ -1820,6 +1820,10 @@ export class InteractiveMode {
timestamp: Date.now(),
});
this.footer.invalidate();
} else if (event.errorMessage) {
// Compaction failed (e.g., quota exceeded, API error)
this.chatContainer.addChild(new Spacer(1));
this.chatContainer.addChild(new Text(theme.fg("error", event.errorMessage), 1, 0));
}
void this.flushCompactionQueue({ willRetry: event.willRetry });
this.ui.requestRender();