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Lay the groundwork to support history in agent2 (#36483)

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This pull request introduces title generation and history replaying. We
still need to wire up the rest of the history but this gets us very
close. I extracted a lot of this code from `agent2-history` because that
branch was starting to get long-lived and there were lots of changes
since we started.

Release Notes:

- N/A
This commit is contained in:
Antonio Scandurra 2025-08-19 16:24:23 +02:00 • committed by GitHub
parent c4083b9b63
commit 6c255c1973
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GPG key ID: B5690EEEBB952194
19 changed files with 929 additions and 328 deletions
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67
crates/agent2/src/tools/web_search_tool.rs
View file

@ -80,33 +80,48 @@ impl AgentTool for WebSearchTool {
}
};
let result_text = if response.results.len() == 1 {
"1 result".to_string()
} else {
format!("{} results", response.results.len())
};
event_stream.update_fields(acp::ToolCallUpdateFields {
title: Some(format!("Searched the web: {result_text}")),
content: Some(
response
.results
.iter()
.map(|result| acp::ToolCallContent::Content {
content: acp::ContentBlock::ResourceLink(acp::ResourceLink {
name: result.title.clone(),
uri: result.url.clone(),
title: Some(result.title.clone()),
description: Some(result.text.clone()),
mime_type: None,
annotations: None,
size: None,
}),
})
.collect(),
),
..Default::default()
});
emit_update(&response, &event_stream);
Ok(WebSearchToolOutput(response))
})
}
fn replay(
&self,
_input: Self::Input,
output: Self::Output,
event_stream: ToolCallEventStream,
_cx: &mut App,
) -> Result<()> {
emit_update(&output.0, &event_stream);
Ok(())
}
}
fn emit_update(response: &WebSearchResponse, event_stream: &ToolCallEventStream) {
let result_text = if response.results.len() == 1 {
"1 result".to_string()
} else {
format!("{} results", response.results.len())
};
event_stream.update_fields(acp::ToolCallUpdateFields {
title: Some(format!("Searched the web: {result_text}")),
content: Some(
response
.results
.iter()
.map(|result| acp::ToolCallContent::Content {
content: acp::ContentBlock::ResourceLink(acp::ResourceLink {
name: result.title.clone(),
uri: result.url.clone(),
title: Some(result.title.clone()),
description: Some(result.text.clone()),
mime_type: None,
annotations: None,
size: None,
}),
})
.collect(),
),
..Default::default()
});
}