Files
codex/codex-rs/core/src/tools/context.rs
2026-03-10 19:29:53 -07:00

597 lines
19 KiB
Rust

use crate::codex::Session;
use crate::codex::TurnContext;
use crate::tools::TELEMETRY_PREVIEW_MAX_BYTES;
use crate::tools::TELEMETRY_PREVIEW_MAX_LINES;
use crate::tools::TELEMETRY_PREVIEW_TRUNCATION_NOTICE;
use crate::truncate::TruncationPolicy;
use crate::truncate::formatted_truncate_text;
use crate::turn_diff_tracker::TurnDiffTracker;
use crate::unified_exec::resolve_max_tokens;
use codex_protocol::mcp::CallToolResult;
use codex_protocol::models::FunctionCallOutputBody;
use codex_protocol::models::FunctionCallOutputContentItem;
use codex_protocol::models::FunctionCallOutputPayload;
use codex_protocol::models::ResponseInputItem;
use codex_protocol::models::ShellToolCallParams;
use codex_protocol::models::function_call_output_content_items_to_text;
use codex_utils_string::take_bytes_at_char_boundary;
use serde::Serialize;
use serde_json::Value as JsonValue;
use std::borrow::Cow;
use std::sync::Arc;
use std::time::Duration;
use tokio::sync::Mutex;
pub type SharedTurnDiffTracker = Arc<Mutex<TurnDiffTracker>>;
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
pub enum ToolCallSource {
Direct,
JsRepl,
CodeMode,
}
#[derive(Clone)]
pub struct ToolInvocation {
pub session: Arc<Session>,
pub turn: Arc<TurnContext>,
pub tracker: SharedTurnDiffTracker,
pub call_id: String,
pub tool_name: String,
pub payload: ToolPayload,
}
#[derive(Clone, Debug)]
pub enum ToolPayload {
Function {
arguments: String,
},
Custom {
input: String,
},
LocalShell {
params: ShellToolCallParams,
},
Mcp {
server: String,
tool: String,
raw_arguments: String,
},
}
impl ToolPayload {
pub fn log_payload(&self) -> Cow<'_, str> {
match self {
ToolPayload::Function { arguments } => Cow::Borrowed(arguments),
ToolPayload::Custom { input } => Cow::Borrowed(input),
ToolPayload::LocalShell { params } => Cow::Owned(params.command.join(" ")),
ToolPayload::Mcp { raw_arguments, .. } => Cow::Borrowed(raw_arguments),
}
}
}
pub trait ToolOutput: Send {
fn log_preview(&self) -> String;
fn success_for_logging(&self) -> bool;
fn to_response_item(&self, call_id: &str, payload: &ToolPayload) -> ResponseInputItem;
fn code_mode_result(&self, payload: &ToolPayload) -> JsonValue {
response_input_to_code_mode_result(self.to_response_item("", payload))
}
}
impl ToolOutput for CallToolResult {
fn log_preview(&self) -> String {
let output = self.as_function_call_output_payload();
let preview = output.body.to_text().unwrap_or_else(|| output.to_string());
telemetry_preview(&preview)
}
fn success_for_logging(&self) -> bool {
self.success()
}
fn to_response_item(&self, call_id: &str, _payload: &ToolPayload) -> ResponseInputItem {
ResponseInputItem::McpToolCallOutput {
call_id: call_id.to_string(),
output: self.clone(),
}
}
fn code_mode_result(&self, _payload: &ToolPayload) -> JsonValue {
serde_json::to_value(self).unwrap_or_else(|err| {
JsonValue::String(format!("failed to serialize mcp result: {err}"))
})
}
}
pub struct FunctionToolOutput {
pub body: Vec<FunctionCallOutputContentItem>,
pub success: Option<bool>,
}
impl FunctionToolOutput {
pub fn from_text(text: String, success: Option<bool>) -> Self {
Self {
body: vec![FunctionCallOutputContentItem::InputText { text }],
success,
}
}
pub fn from_content(
content: Vec<FunctionCallOutputContentItem>,
success: Option<bool>,
) -> Self {
Self {
body: content,
success,
}
}
pub fn into_text(self) -> String {
function_call_output_content_items_to_text(&self.body).unwrap_or_default()
}
}
impl ToolOutput for FunctionToolOutput {
fn log_preview(&self) -> String {
telemetry_preview(
&function_call_output_content_items_to_text(&self.body).unwrap_or_default(),
)
}
fn success_for_logging(&self) -> bool {
self.success.unwrap_or(true)
}
fn to_response_item(&self, call_id: &str, payload: &ToolPayload) -> ResponseInputItem {
function_tool_response(call_id, payload, self.body.clone(), self.success)
}
}
#[derive(Debug, Clone, PartialEq)]
pub struct ExecCommandToolOutput {
pub event_call_id: String,
pub chunk_id: String,
pub wall_time: Duration,
/// Raw bytes returned for this unified exec call before any truncation.
pub raw_output: Vec<u8>,
pub max_output_tokens: Option<usize>,
pub process_id: Option<i32>,
pub exit_code: Option<i32>,
pub original_token_count: Option<usize>,
pub session_command: Option<Vec<String>>,
}
impl ToolOutput for ExecCommandToolOutput {
fn log_preview(&self) -> String {
telemetry_preview(&self.response_text())
}
fn success_for_logging(&self) -> bool {
true
}
fn to_response_item(&self, call_id: &str, payload: &ToolPayload) -> ResponseInputItem {
function_tool_response(
call_id,
payload,
vec![FunctionCallOutputContentItem::InputText {
text: self.response_text(),
}],
Some(true),
)
}
fn code_mode_result(&self, _payload: &ToolPayload) -> JsonValue {
#[derive(Serialize)]
struct UnifiedExecCodeModeResult {
#[serde(skip_serializing_if = "Option::is_none")]
chunk_id: Option<String>,
wall_time_seconds: f64,
#[serde(skip_serializing_if = "Option::is_none")]
exit_code: Option<i32>,
#[serde(skip_serializing_if = "Option::is_none")]
session_id: Option<i32>,
#[serde(skip_serializing_if = "Option::is_none")]
original_token_count: Option<usize>,
output: String,
}
let result = UnifiedExecCodeModeResult {
chunk_id: (!self.chunk_id.is_empty()).then(|| self.chunk_id.clone()),
wall_time_seconds: self.wall_time.as_secs_f64(),
exit_code: self.exit_code,
session_id: self.process_id,
original_token_count: self.original_token_count,
output: self.truncated_output(),
};
serde_json::to_value(result).unwrap_or_else(|err| {
JsonValue::String(format!("failed to serialize exec result: {err}"))
})
}
}
impl ExecCommandToolOutput {
pub(crate) fn truncated_output(&self) -> String {
let text = String::from_utf8_lossy(&self.raw_output).to_string();
let max_tokens = resolve_max_tokens(self.max_output_tokens);
formatted_truncate_text(&text, TruncationPolicy::Tokens(max_tokens))
}
fn response_text(&self) -> String {
let mut sections = Vec::new();
if !self.chunk_id.is_empty() {
sections.push(format!("Chunk ID: {}", self.chunk_id));
}
let wall_time_seconds = self.wall_time.as_secs_f64();
sections.push(format!("Wall time: {wall_time_seconds:.4} seconds"));
if let Some(exit_code) = self.exit_code {
sections.push(format!("Process exited with code {exit_code}"));
}
if let Some(process_id) = &self.process_id {
sections.push(format!("Process running with session ID {process_id}"));
}
if let Some(original_token_count) = self.original_token_count {
sections.push(format!("Original token count: {original_token_count}"));
}
sections.push("Output:".to_string());
sections.push(self.truncated_output());
sections.join("\n")
}
}
fn response_input_to_code_mode_result(response: ResponseInputItem) -> JsonValue {
match response {
ResponseInputItem::Message { content, .. } => content_items_to_code_mode_result(
&content
.into_iter()
.map(|item| match item {
codex_protocol::models::ContentItem::InputText { text }
| codex_protocol::models::ContentItem::OutputText { text } => {
FunctionCallOutputContentItem::InputText { text }
}
codex_protocol::models::ContentItem::InputImage { image_url } => {
FunctionCallOutputContentItem::InputImage {
image_url,
detail: None,
}
}
})
.collect::<Vec<_>>(),
),
ResponseInputItem::FunctionCallOutput { output, .. }
| ResponseInputItem::CustomToolCallOutput { output, .. } => match output.body {
FunctionCallOutputBody::Text(text) => JsonValue::String(text),
FunctionCallOutputBody::ContentItems(items) => {
content_items_to_code_mode_result(&items)
}
},
ResponseInputItem::McpToolCallOutput { output, .. } => {
output.code_mode_result(&ToolPayload::Mcp {
server: String::new(),
tool: String::new(),
raw_arguments: String::new(),
})
}
}
}
fn content_items_to_code_mode_result(items: &[FunctionCallOutputContentItem]) -> JsonValue {
JsonValue::String(
items
.iter()
.filter_map(|item| match item {
FunctionCallOutputContentItem::InputText { text } if !text.trim().is_empty() => {
Some(text.clone())
}
FunctionCallOutputContentItem::InputImage { image_url, .. }
if !image_url.trim().is_empty() =>
{
Some(image_url.clone())
}
FunctionCallOutputContentItem::InputText { .. }
| FunctionCallOutputContentItem::InputImage { .. } => None,
})
.collect::<Vec<_>>()
.join("\n"),
)
}
fn function_tool_response(
call_id: &str,
payload: &ToolPayload,
body: Vec<FunctionCallOutputContentItem>,
success: Option<bool>,
) -> ResponseInputItem {
let body = match body.as_slice() {
[FunctionCallOutputContentItem::InputText { text }] => {
FunctionCallOutputBody::Text(text.clone())
}
_ => FunctionCallOutputBody::ContentItems(body),
};
if matches!(payload, ToolPayload::Custom { .. }) {
return ResponseInputItem::CustomToolCallOutput {
call_id: call_id.to_string(),
output: FunctionCallOutputPayload { body, success },
};
}
ResponseInputItem::FunctionCallOutput {
call_id: call_id.to_string(),
output: FunctionCallOutputPayload { body, success },
}
}
fn telemetry_preview(content: &str) -> String {
let truncated_slice = take_bytes_at_char_boundary(content, TELEMETRY_PREVIEW_MAX_BYTES);
let truncated_by_bytes = truncated_slice.len() < content.len();
let mut preview = String::new();
let mut lines_iter = truncated_slice.lines();
for idx in 0..TELEMETRY_PREVIEW_MAX_LINES {
match lines_iter.next() {
Some(line) => {
if idx > 0 {
preview.push('\n');
}
preview.push_str(line);
}
None => break,
}
}
let truncated_by_lines = lines_iter.next().is_some();
if !truncated_by_bytes && !truncated_by_lines {
return content.to_string();
}
if preview.len() < truncated_slice.len()
&& truncated_slice
.as_bytes()
.get(preview.len())
.is_some_and(|byte| *byte == b'\n')
{
preview.push('\n');
}
if !preview.is_empty() && !preview.ends_with('\n') {
preview.push('\n');
}
preview.push_str(TELEMETRY_PREVIEW_TRUNCATION_NOTICE);
preview
}
#[cfg(test)]
mod tests {
use super::*;
use core_test_support::assert_regex_match;
use pretty_assertions::assert_eq;
#[test]
fn custom_tool_calls_should_roundtrip_as_custom_outputs() {
let payload = ToolPayload::Custom {
input: "patch".to_string(),
};
let response = FunctionToolOutput::from_text("patched".to_string(), Some(true))
.to_response_item("call-42", &payload);
match response {
ResponseInputItem::CustomToolCallOutput { call_id, output } => {
assert_eq!(call_id, "call-42");
assert_eq!(output.content_items(), None);
assert_eq!(output.body.to_text().as_deref(), Some("patched"));
assert_eq!(output.success, Some(true));
}
other => panic!("expected CustomToolCallOutput, got {other:?}"),
}
}
#[test]
fn function_payloads_remain_function_outputs() {
let payload = ToolPayload::Function {
arguments: "{}".to_string(),
};
let response = FunctionToolOutput::from_text("ok".to_string(), Some(true))
.to_response_item("fn-1", &payload);
match response {
ResponseInputItem::FunctionCallOutput { call_id, output } => {
assert_eq!(call_id, "fn-1");
assert_eq!(output.content_items(), None);
assert_eq!(output.body.to_text().as_deref(), Some("ok"));
assert_eq!(output.success, Some(true));
}
other => panic!("expected FunctionCallOutput, got {other:?}"),
}
}
#[test]
fn mcp_code_mode_result_serializes_full_call_tool_result() {
let output = CallToolResult {
content: vec![serde_json::json!({
"type": "text",
"text": "ignored",
})],
structured_content: Some(serde_json::json!({
"threadId": "thread_123",
"content": "done",
})),
is_error: Some(false),
meta: Some(serde_json::json!({
"source": "mcp",
})),
};
let result = output.code_mode_result(&ToolPayload::Mcp {
server: "server".to_string(),
tool: "tool".to_string(),
raw_arguments: "{}".to_string(),
});
assert_eq!(
result,
serde_json::json!({
"content": [{
"type": "text",
"text": "ignored",
}],
"structuredContent": {
"threadId": "thread_123",
"content": "done",
},
"isError": false,
"_meta": {
"source": "mcp",
},
})
);
}
#[test]
fn custom_tool_calls_can_derive_text_from_content_items() {
let payload = ToolPayload::Custom {
input: "patch".to_string(),
};
let response = FunctionToolOutput::from_content(
vec![
FunctionCallOutputContentItem::InputText {
text: "line 1".to_string(),
},
FunctionCallOutputContentItem::InputImage {
image_url: "data:image/png;base64,AAA".to_string(),
detail: None,
},
FunctionCallOutputContentItem::InputText {
text: "line 2".to_string(),
},
],
Some(true),
)
.to_response_item("call-99", &payload);
match response {
ResponseInputItem::CustomToolCallOutput { call_id, output } => {
let expected = vec![
FunctionCallOutputContentItem::InputText {
text: "line 1".to_string(),
},
FunctionCallOutputContentItem::InputImage {
image_url: "data:image/png;base64,AAA".to_string(),
detail: None,
},
FunctionCallOutputContentItem::InputText {
text: "line 2".to_string(),
},
];
assert_eq!(call_id, "call-99");
assert_eq!(output.content_items(), Some(expected.as_slice()));
assert_eq!(output.body.to_text().as_deref(), Some("line 1\nline 2"));
assert_eq!(output.success, Some(true));
}
other => panic!("expected CustomToolCallOutput, got {other:?}"),
}
}
#[test]
fn log_preview_uses_content_items_when_plain_text_is_missing() {
let output = FunctionToolOutput::from_content(
vec![FunctionCallOutputContentItem::InputText {
text: "preview".to_string(),
}],
Some(true),
);
assert_eq!(output.log_preview(), "preview");
assert_eq!(
function_call_output_content_items_to_text(&output.body),
Some("preview".to_string())
);
}
#[test]
fn telemetry_preview_returns_original_within_limits() {
let content = "short output";
assert_eq!(telemetry_preview(content), content);
}
#[test]
fn telemetry_preview_truncates_by_bytes() {
let content = "x".repeat(TELEMETRY_PREVIEW_MAX_BYTES + 8);
let preview = telemetry_preview(&content);
assert!(preview.contains(TELEMETRY_PREVIEW_TRUNCATION_NOTICE));
assert!(
preview.len()
<= TELEMETRY_PREVIEW_MAX_BYTES + TELEMETRY_PREVIEW_TRUNCATION_NOTICE.len() + 1
);
}
#[test]
fn telemetry_preview_truncates_by_lines() {
let content = (0..(TELEMETRY_PREVIEW_MAX_LINES + 5))
.map(|idx| format!("line {idx}"))
.collect::<Vec<_>>()
.join("\n");
let preview = telemetry_preview(&content);
let lines: Vec<&str> = preview.lines().collect();
assert!(lines.len() <= TELEMETRY_PREVIEW_MAX_LINES + 1);
assert_eq!(lines.last(), Some(&TELEMETRY_PREVIEW_TRUNCATION_NOTICE));
}
#[test]
fn exec_command_tool_output_formats_truncated_response() {
let payload = ToolPayload::Function {
arguments: "{}".to_string(),
};
let response = ExecCommandToolOutput {
event_call_id: "call-42".to_string(),
chunk_id: "abc123".to_string(),
wall_time: std::time::Duration::from_millis(1250),
raw_output: b"token one token two token three token four token five".to_vec(),
max_output_tokens: Some(4),
process_id: None,
exit_code: Some(0),
original_token_count: Some(10),
session_command: None,
}
.to_response_item("call-42", &payload);
match response {
ResponseInputItem::FunctionCallOutput { call_id, output } => {
assert_eq!(call_id, "call-42");
assert_eq!(output.success, Some(true));
let text = output
.body
.to_text()
.expect("exec output should serialize as text");
assert_regex_match(
r#"(?sx)
^Chunk\ ID:\ abc123
\nWall\ time:\ \d+\.\d{4}\ seconds
\nProcess\ exited\ with\ code\ 0
\nOriginal\ token\ count:\ 10
\nOutput:
\n.*tokens\ truncated.*
$"#,
&text,
);
}
other => panic!("expected FunctionCallOutput, got {other:?}"),
}
}
}