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fix: robust UX for remote agent errors (#20307)

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Co-authored-by: Adam Weidman <adamfweidman@google.com>
This commit is contained in:
Shyam Raghuwanshi
2026-03-11 05:20:25 +05:30
committed by GitHub
parent 12bf803d23
commit 7ef967de02
8 changed files with 768 additions and 32 deletions
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packages/core/src/agents/a2a-client-manager.ts
+17 -22
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@@ -26,6 +26,7 @@ import { v4 as uuidv4 } from 'uuid';
import { Agent as UndiciAgent } from 'undici';
import { debugLogger } from '../utils/debugLogger.js';
import { safeLookup } from '../utils/fetch.js';
import { classifyAgentError } from './a2a-errors.js';
// Remote agents can take 10+ minutes (e.g. Deep Research).
// Use a dedicated dispatcher so the global 5-min timeout isn't affected.
@@ -131,18 +132,22 @@ export class A2AClientManager {
},
);
const factory = new ClientFactory(options);
const client = await factory.createFromUrl(agentCardUrl, '');
const agentCard = await client.getAgentCard();
try {
const factory = new ClientFactory(options);
const client = await factory.createFromUrl(agentCardUrl, '');
const agentCard = await client.getAgentCard();
this.clients.set(name, client);
this.agentCards.set(name, agentCard);
this.clients.set(name, client);
this.agentCards.set(name, agentCard);
debugLogger.debug(
`[A2AClientManager] Loaded agent '${name}' from ${agentCardUrl}`,
);
debugLogger.debug(
`[A2AClientManager] Loaded agent '${name}' from ${agentCardUrl}`,
);
return agentCard;
return agentCard;
} catch (error: unknown) {
throw classifyAgentError(name, agentCardUrl, error);
}
}
/**
@@ -183,19 +188,9 @@ export class A2AClientManager {
},
};
try {
yield* client.sendMessageStream(messageParams, {
signal: options?.signal,
});
} catch (error: unknown) {
const prefix = `[A2AClientManager] sendMessageStream Error [${agentName}]`;
if (error instanceof Error) {
throw new Error(`${prefix}: ${error.message}`, { cause: error });
}
throw new Error(
`${prefix}: Unexpected error during sendMessageStream: ${String(error)}`,
);
}
yield* client.sendMessageStream(messageParams, {
signal: options?.signal,
});
}
/**