Files
codex/codex-rs/core/src/config/service.rs

1146 lines
38 KiB
Rust

use super::CONFIG_TOML_FILE;
use super::ConfigToml;
use crate::config::edit::ConfigEdit;
use crate::config::edit::ConfigEditsBuilder;
use crate::config_loader::ConfigLayerEntry;
use crate::config_loader::ConfigLayerStack;
use crate::config_loader::LoaderOverrides;
use crate::config_loader::load_config_layers_state;
use crate::config_loader::merge_toml_values;
use crate::path_utils;
use codex_app_server_protocol::Config as ApiConfig;
use codex_app_server_protocol::ConfigBatchWriteParams;
use codex_app_server_protocol::ConfigLayerMetadata;
use codex_app_server_protocol::ConfigLayerSource;
use codex_app_server_protocol::ConfigReadParams;
use codex_app_server_protocol::ConfigReadResponse;
use codex_app_server_protocol::ConfigValueWriteParams;
use codex_app_server_protocol::ConfigWriteErrorCode;
use codex_app_server_protocol::ConfigWriteResponse;
use codex_app_server_protocol::MergeStrategy;
use codex_app_server_protocol::OverriddenMetadata;
use codex_app_server_protocol::WriteStatus;
use codex_utils_absolute_path::AbsolutePathBuf;
use serde_json::Value as JsonValue;
use std::borrow::Cow;
use std::path::Path;
use std::path::PathBuf;
use thiserror::Error;
use toml::Value as TomlValue;
use toml_edit::Item as TomlItem;
#[derive(Debug, Error)]
pub enum ConfigServiceError {
#[error("{message}")]
Write {
code: ConfigWriteErrorCode,
message: String,
},
#[error("{context}: {source}")]
Io {
context: &'static str,
#[source]
source: std::io::Error,
},
#[error("{context}: {source}")]
Json {
context: &'static str,
#[source]
source: serde_json::Error,
},
#[error("{context}: {source}")]
Toml {
context: &'static str,
#[source]
source: toml::de::Error,
},
#[error("{context}: {source}")]
Anyhow {
context: &'static str,
#[source]
source: anyhow::Error,
},
}
impl ConfigServiceError {
fn write(code: ConfigWriteErrorCode, message: impl Into<String>) -> Self {
Self::Write {
code,
message: message.into(),
}
}
fn io(context: &'static str, source: std::io::Error) -> Self {
Self::Io { context, source }
}
fn json(context: &'static str, source: serde_json::Error) -> Self {
Self::Json { context, source }
}
fn toml(context: &'static str, source: toml::de::Error) -> Self {
Self::Toml { context, source }
}
fn anyhow(context: &'static str, source: anyhow::Error) -> Self {
Self::Anyhow { context, source }
}
pub fn write_error_code(&self) -> Option<ConfigWriteErrorCode> {
match self {
Self::Write { code, .. } => Some(code.clone()),
_ => None,
}
}
}
#[derive(Clone)]
pub struct ConfigService {
codex_home: PathBuf,
cli_overrides: Vec<(String, TomlValue)>,
loader_overrides: LoaderOverrides,
}
impl ConfigService {
pub fn new(
codex_home: PathBuf,
cli_overrides: Vec<(String, TomlValue)>,
loader_overrides: LoaderOverrides,
) -> Self {
Self {
codex_home,
cli_overrides,
loader_overrides,
}
}
pub fn new_with_defaults(codex_home: PathBuf) -> Self {
Self {
codex_home,
cli_overrides: Vec::new(),
loader_overrides: LoaderOverrides::default(),
}
}
pub async fn read(
&self,
params: ConfigReadParams,
) -> Result<ConfigReadResponse, ConfigServiceError> {
let layers = self
.load_thread_agnostic_config()
.await
.map_err(|err| ConfigServiceError::io("failed to read configuration layers", err))?;
let effective = layers.effective_config();
validate_config(&effective)
.map_err(|err| ConfigServiceError::toml("invalid configuration", err))?;
let json_value = serde_json::to_value(&effective)
.map_err(|err| ConfigServiceError::json("failed to serialize configuration", err))?;
let config: ApiConfig = serde_json::from_value(json_value)
.map_err(|err| ConfigServiceError::json("failed to deserialize configuration", err))?;
Ok(ConfigReadResponse {
config,
origins: layers.origins(),
layers: params.include_layers.then(|| {
layers
.layers_high_to_low()
.iter()
.map(|layer| layer.as_layer())
.collect()
}),
})
}
pub async fn write_value(
&self,
params: ConfigValueWriteParams,
) -> Result<ConfigWriteResponse, ConfigServiceError> {
let edits = vec![(params.key_path, params.value, params.merge_strategy)];
self.apply_edits(params.file_path, params.expected_version, edits)
.await
}
pub async fn batch_write(
&self,
params: ConfigBatchWriteParams,
) -> Result<ConfigWriteResponse, ConfigServiceError> {
let edits = params
.edits
.into_iter()
.map(|edit| (edit.key_path, edit.value, edit.merge_strategy))
.collect();
self.apply_edits(params.file_path, params.expected_version, edits)
.await
}
pub async fn load_user_saved_config(
&self,
) -> Result<codex_app_server_protocol::UserSavedConfig, ConfigServiceError> {
let layers = self
.load_thread_agnostic_config()
.await
.map_err(|err| ConfigServiceError::io("failed to load configuration", err))?;
let toml_value = layers.effective_config();
let cfg: ConfigToml = toml_value
.try_into()
.map_err(|err| ConfigServiceError::toml("failed to parse config.toml", err))?;
Ok(cfg.into())
}
async fn apply_edits(
&self,
file_path: Option<String>,
expected_version: Option<String>,
edits: Vec<(String, JsonValue, MergeStrategy)>,
) -> Result<ConfigWriteResponse, ConfigServiceError> {
let allowed_path =
AbsolutePathBuf::resolve_path_against_base(CONFIG_TOML_FILE, &self.codex_home)
.map_err(|err| ConfigServiceError::io("failed to resolve user config path", err))?;
let provided_path = match file_path {
Some(path) => AbsolutePathBuf::from_absolute_path(PathBuf::from(path))
.map_err(|err| ConfigServiceError::io("failed to resolve user config path", err))?,
None => allowed_path.clone(),
};
if !paths_match(&allowed_path, &provided_path) {
return Err(ConfigServiceError::write(
ConfigWriteErrorCode::ConfigLayerReadonly,
"Only writes to the user config are allowed",
));
}
let layers = self
.load_thread_agnostic_config()
.await
.map_err(|err| ConfigServiceError::io("failed to load configuration", err))?;
let user_layer = match layers.get_user_layer() {
Some(layer) => Cow::Borrowed(layer),
None => Cow::Owned(create_empty_user_layer(&allowed_path).await?),
};
if let Some(expected) = expected_version.as_deref()
&& expected != user_layer.version
{
return Err(ConfigServiceError::write(
ConfigWriteErrorCode::ConfigVersionConflict,
"Configuration was modified since last read. Fetch latest version and retry.",
));
}
let mut user_config = user_layer.config.clone();
let mut parsed_segments = Vec::new();
let mut config_edits = Vec::new();
for (key_path, value, strategy) in edits.into_iter() {
let segments = parse_key_path(&key_path).map_err(|message| {
ConfigServiceError::write(ConfigWriteErrorCode::ConfigValidationError, message)
})?;
let original_value = value_at_path(&user_config, &segments).cloned();
let parsed_value = parse_value(value).map_err(|message| {
ConfigServiceError::write(ConfigWriteErrorCode::ConfigValidationError, message)
})?;
apply_merge(&mut user_config, &segments, parsed_value.as_ref(), strategy).map_err(
|err| match err {
MergeError::PathNotFound => ConfigServiceError::write(
ConfigWriteErrorCode::ConfigPathNotFound,
"Path not found",
),
MergeError::Validation(message) => ConfigServiceError::write(
ConfigWriteErrorCode::ConfigValidationError,
message,
),
},
)?;
let updated_value = value_at_path(&user_config, &segments).cloned();
if original_value != updated_value {
let edit = match updated_value {
Some(value) => ConfigEdit::SetPath {
segments: segments.clone(),
value: toml_value_to_item(&value).map_err(|err| {
ConfigServiceError::anyhow("failed to build config edits", err)
})?,
},
None => ConfigEdit::ClearPath {
segments: segments.clone(),
},
};
config_edits.push(edit);
}
parsed_segments.push(segments);
}
validate_config(&user_config).map_err(|err| {
ConfigServiceError::write(
ConfigWriteErrorCode::ConfigValidationError,
format!("Invalid configuration: {err}"),
)
})?;
let updated_layers = layers.with_user_config(&provided_path, user_config.clone());
let effective = updated_layers.effective_config();
validate_config(&effective).map_err(|err| {
ConfigServiceError::write(
ConfigWriteErrorCode::ConfigValidationError,
format!("Invalid configuration: {err}"),
)
})?;
if !config_edits.is_empty() {
ConfigEditsBuilder::new(&self.codex_home)
.with_edits(config_edits)
.apply()
.await
.map_err(|err| ConfigServiceError::anyhow("failed to persist config.toml", err))?;
}
let overridden = first_overridden_edit(&updated_layers, &effective, &parsed_segments);
let status = overridden
.as_ref()
.map(|_| WriteStatus::OkOverridden)
.unwrap_or(WriteStatus::Ok);
Ok(ConfigWriteResponse {
status,
version: updated_layers
.get_user_layer()
.ok_or_else(|| {
ConfigServiceError::write(
ConfigWriteErrorCode::UserLayerNotFound,
"user layer not found in updated layers",
)
})?
.version
.clone(),
file_path: provided_path,
overridden_metadata: overridden,
})
}
/// Loads a "thread-agnostic" config, which means the config layers do not
/// include any in-repo .codex/ folders because there is no cwd/project root
/// associated with this query.
async fn load_thread_agnostic_config(&self) -> std::io::Result<ConfigLayerStack> {
let cwd: Option<AbsolutePathBuf> = None;
load_config_layers_state(
&self.codex_home,
cwd,
&self.cli_overrides,
self.loader_overrides.clone(),
)
.await
}
}
async fn create_empty_user_layer(
config_toml: &AbsolutePathBuf,
) -> Result<ConfigLayerEntry, ConfigServiceError> {
let toml_value = match tokio::fs::read_to_string(config_toml).await {
Ok(contents) => toml::from_str(&contents).map_err(|e| {
ConfigServiceError::toml("failed to parse existing user config.toml", e)
})?,
Err(e) => {
if e.kind() == std::io::ErrorKind::NotFound {
tokio::fs::write(config_toml, "").await.map_err(|e| {
ConfigServiceError::io("failed to create empty user config.toml", e)
})?;
TomlValue::Table(toml::map::Map::new())
} else {
return Err(ConfigServiceError::io("failed to read user config.toml", e));
}
}
};
Ok(ConfigLayerEntry::new(
ConfigLayerSource::User {
file: config_toml.clone(),
},
toml_value,
))
}
fn parse_value(value: JsonValue) -> Result<Option<TomlValue>, String> {
if value.is_null() {
return Ok(None);
}
serde_json::from_value::<TomlValue>(value)
.map(Some)
.map_err(|err| format!("invalid value: {err}"))
}
fn parse_key_path(path: &str) -> Result<Vec<String>, String> {
if path.trim().is_empty() {
return Err("keyPath must not be empty".to_string());
}
Ok(path
.split('.')
.map(std::string::ToString::to_string)
.collect())
}
#[derive(Debug)]
enum MergeError {
PathNotFound,
Validation(String),
}
fn apply_merge(
root: &mut TomlValue,
segments: &[String],
value: Option<&TomlValue>,
strategy: MergeStrategy,
) -> Result<bool, MergeError> {
let Some(value) = value else {
return clear_path(root, segments);
};
let Some((last, parents)) = segments.split_last() else {
return Err(MergeError::Validation(
"keyPath must not be empty".to_string(),
));
};
let mut current = root;
for segment in parents {
match current {
TomlValue::Table(table) => {
current = table
.entry(segment.clone())
.or_insert_with(|| TomlValue::Table(toml::map::Map::new()));
}
_ => {
*current = TomlValue::Table(toml::map::Map::new());
if let TomlValue::Table(table) = current {
current = table
.entry(segment.clone())
.or_insert_with(|| TomlValue::Table(toml::map::Map::new()));
}
}
}
}
let table = current.as_table_mut().ok_or_else(|| {
MergeError::Validation("cannot set value on non-table parent".to_string())
})?;
if matches!(strategy, MergeStrategy::Upsert)
&& let Some(existing) = table.get_mut(last)
&& matches!(existing, TomlValue::Table(_))
&& matches!(value, TomlValue::Table(_))
{
merge_toml_values(existing, value);
return Ok(true);
}
let changed = table
.get(last)
.map(|existing| Some(existing) != Some(value))
.unwrap_or(true);
table.insert(last.clone(), value.clone());
Ok(changed)
}
fn clear_path(root: &mut TomlValue, segments: &[String]) -> Result<bool, MergeError> {
let Some((last, parents)) = segments.split_last() else {
return Err(MergeError::Validation(
"keyPath must not be empty".to_string(),
));
};
let mut current = root;
for segment in parents {
match current {
TomlValue::Table(table) => {
current = table.get_mut(segment).ok_or(MergeError::PathNotFound)?;
}
_ => return Err(MergeError::PathNotFound),
}
}
let Some(parent) = current.as_table_mut() else {
return Err(MergeError::PathNotFound);
};
Ok(parent.remove(last).is_some())
}
fn toml_value_to_item(value: &TomlValue) -> anyhow::Result<TomlItem> {
match value {
TomlValue::Table(table) => {
let mut table_item = toml_edit::Table::new();
table_item.set_implicit(false);
for (key, val) in table {
table_item.insert(key, toml_value_to_item(val)?);
}
Ok(TomlItem::Table(table_item))
}
other => Ok(TomlItem::Value(toml_value_to_value(other)?)),
}
}
fn toml_value_to_value(value: &TomlValue) -> anyhow::Result<toml_edit::Value> {
match value {
TomlValue::String(val) => Ok(toml_edit::Value::from(val.clone())),
TomlValue::Integer(val) => Ok(toml_edit::Value::from(*val)),
TomlValue::Float(val) => Ok(toml_edit::Value::from(*val)),
TomlValue::Boolean(val) => Ok(toml_edit::Value::from(*val)),
TomlValue::Datetime(val) => Ok(toml_edit::Value::from(*val)),
TomlValue::Array(items) => {
let mut array = toml_edit::Array::new();
for item in items {
array.push(toml_value_to_value(item)?);
}
Ok(toml_edit::Value::Array(array))
}
TomlValue::Table(table) => {
let mut inline = toml_edit::InlineTable::new();
for (key, val) in table {
inline.insert(key, toml_value_to_value(val)?);
}
Ok(toml_edit::Value::InlineTable(inline))
}
}
}
fn validate_config(value: &TomlValue) -> Result<(), toml::de::Error> {
let _: ConfigToml = value.clone().try_into()?;
Ok(())
}
fn paths_match(expected: impl AsRef<Path>, provided: impl AsRef<Path>) -> bool {
if let (Ok(expanded_expected), Ok(expanded_provided)) = (
path_utils::normalize_for_path_comparison(&expected),
path_utils::normalize_for_path_comparison(&provided),
) {
expanded_expected == expanded_provided
} else {
expected.as_ref() == provided.as_ref()
}
}
fn value_at_path<'a>(root: &'a TomlValue, segments: &[String]) -> Option<&'a TomlValue> {
let mut current = root;
for segment in segments {
match current {
TomlValue::Table(table) => {
current = table.get(segment)?;
}
TomlValue::Array(items) => {
let idx = segment.parse::<i64>().ok()?;
let idx = usize::try_from(idx).ok()?;
current = items.get(idx)?;
}
_ => return None,
}
}
Some(current)
}
fn override_message(layer: &ConfigLayerSource) -> String {
match layer {
ConfigLayerSource::Mdm { domain, key: _ } => {
format!("Overridden by managed policy (MDM): {domain}")
}
ConfigLayerSource::System { file } => {
format!("Overridden by managed config (system): {}", file.display())
}
ConfigLayerSource::Project { dot_codex_folder } => format!(
"Overridden by project config: {}/{CONFIG_TOML_FILE}",
dot_codex_folder.display(),
),
ConfigLayerSource::SessionFlags => "Overridden by session flags".to_string(),
ConfigLayerSource::User { file } => {
format!("Overridden by user config: {}", file.display())
}
ConfigLayerSource::LegacyManagedConfigTomlFromFile { file } => {
format!(
"Overridden by legacy managed_config.toml: {}",
file.display()
)
}
ConfigLayerSource::LegacyManagedConfigTomlFromMdm => {
"Overridden by legacy managed configuration from MDM".to_string()
}
}
}
fn compute_override_metadata(
layers: &ConfigLayerStack,
effective: &TomlValue,
segments: &[String],
) -> Option<OverriddenMetadata> {
let user_value = match layers.get_user_layer() {
Some(user_layer) => value_at_path(&user_layer.config, segments),
None => return None,
};
let effective_value = value_at_path(effective, segments);
if user_value.is_some() && user_value == effective_value {
return None;
}
if user_value.is_none() && effective_value.is_none() {
return None;
}
let overriding_layer = find_effective_layer(layers, segments)?;
let message = override_message(&overriding_layer.name);
Some(OverriddenMetadata {
message,
overriding_layer,
effective_value: effective_value
.and_then(|value| serde_json::to_value(value).ok())
.unwrap_or(JsonValue::Null),
})
}
fn first_overridden_edit(
layers: &ConfigLayerStack,
effective: &TomlValue,
edits: &[Vec<String>],
) -> Option<OverriddenMetadata> {
for segments in edits {
if let Some(meta) = compute_override_metadata(layers, effective, segments) {
return Some(meta);
}
}
None
}
fn find_effective_layer(
layers: &ConfigLayerStack,
segments: &[String],
) -> Option<ConfigLayerMetadata> {
for layer in layers.layers_high_to_low() {
if let Some(meta) = value_at_path(&layer.config, segments).map(|_| layer.metadata()) {
return Some(meta);
}
}
None
}
#[cfg(test)]
mod tests {
use super::*;
use anyhow::Result;
use codex_app_server_protocol::AskForApproval;
use codex_utils_absolute_path::AbsolutePathBuf;
use pretty_assertions::assert_eq;
use tempfile::tempdir;
#[test]
fn toml_value_to_item_handles_nested_config_tables() {
let config = r#"
[mcp_servers.docs]
command = "docs-server"
[mcp_servers.docs.http_headers]
X-Doc = "42"
"#;
let value: TomlValue = toml::from_str(config).expect("parse config example");
let item = toml_value_to_item(&value).expect("convert to toml_edit item");
let root = item.as_table().expect("root table");
assert!(!root.is_implicit(), "root table should be explicit");
let mcp_servers = root
.get("mcp_servers")
.and_then(TomlItem::as_table)
.expect("mcp_servers table");
assert!(
!mcp_servers.is_implicit(),
"mcp_servers table should be explicit"
);
let docs = mcp_servers
.get("docs")
.and_then(TomlItem::as_table)
.expect("docs table");
assert_eq!(
docs.get("command")
.and_then(TomlItem::as_value)
.and_then(toml_edit::Value::as_str),
Some("docs-server")
);
let http_headers = docs
.get("http_headers")
.and_then(TomlItem::as_table)
.expect("http_headers table");
assert_eq!(
http_headers
.get("X-Doc")
.and_then(TomlItem::as_value)
.and_then(toml_edit::Value::as_str),
Some("42")
);
}
#[tokio::test]
async fn write_value_preserves_comments_and_order() -> Result<()> {
let tmp = tempdir().expect("tempdir");
let original = r#"# Codex user configuration
model = "gpt-5"
approval_policy = "on-request"
[notice]
# Preserve this comment
hide_full_access_warning = true
[features]
unified_exec = true
"#;
std::fs::write(tmp.path().join(CONFIG_TOML_FILE), original)?;
let service = ConfigService::new_with_defaults(tmp.path().to_path_buf());
service
.write_value(ConfigValueWriteParams {
file_path: Some(tmp.path().join(CONFIG_TOML_FILE).display().to_string()),
key_path: "features.remote_compaction".to_string(),
value: serde_json::json!(true),
merge_strategy: MergeStrategy::Replace,
expected_version: None,
})
.await
.expect("write succeeds");
let updated =
std::fs::read_to_string(tmp.path().join(CONFIG_TOML_FILE)).expect("read config");
let expected = r#"# Codex user configuration
model = "gpt-5"
approval_policy = "on-request"
[notice]
# Preserve this comment
hide_full_access_warning = true
[features]
unified_exec = true
remote_compaction = true
"#;
assert_eq!(updated, expected);
Ok(())
}
#[tokio::test]
async fn read_includes_origins_and_layers() {
let tmp = tempdir().expect("tempdir");
let user_path = tmp.path().join(CONFIG_TOML_FILE);
std::fs::write(&user_path, "model = \"user\"").unwrap();
let user_file = AbsolutePathBuf::try_from(user_path.clone()).expect("user file");
let managed_path = tmp.path().join("managed_config.toml");
std::fs::write(&managed_path, "approval_policy = \"never\"").unwrap();
let managed_file = AbsolutePathBuf::try_from(managed_path.clone()).expect("managed file");
let service = ConfigService::new(
tmp.path().to_path_buf(),
vec![],
LoaderOverrides {
managed_config_path: Some(managed_path.clone()),
#[cfg(target_os = "macos")]
managed_preferences_base64: None,
macos_managed_config_requirements_base64: None,
},
);
let response = service
.read(ConfigReadParams {
include_layers: true,
})
.await
.expect("response");
assert_eq!(response.config.approval_policy, Some(AskForApproval::Never));
assert_eq!(
response
.origins
.get("approval_policy")
.expect("origin")
.name,
ConfigLayerSource::LegacyManagedConfigTomlFromFile {
file: managed_file.clone()
},
);
let layers = response.layers.expect("layers present");
if cfg!(unix) {
let system_file = AbsolutePathBuf::from_absolute_path(
crate::config_loader::SYSTEM_CONFIG_TOML_FILE_UNIX,
)
.expect("system file");
assert_eq!(layers.len(), 3, "expected three layers on unix");
assert_eq!(
layers.first().unwrap().name,
ConfigLayerSource::LegacyManagedConfigTomlFromFile {
file: managed_file.clone()
}
);
assert_eq!(
layers.get(1).unwrap().name,
ConfigLayerSource::User {
file: user_file.clone()
}
);
assert_eq!(
layers.get(2).unwrap().name,
ConfigLayerSource::System { file: system_file }
);
} else {
assert_eq!(layers.len(), 2, "expected two layers");
assert_eq!(
layers.first().unwrap().name,
ConfigLayerSource::LegacyManagedConfigTomlFromFile {
file: managed_file.clone()
}
);
assert_eq!(
layers.get(1).unwrap().name,
ConfigLayerSource::User { file: user_file }
);
}
}
#[tokio::test]
async fn write_value_reports_override() {
let tmp = tempdir().expect("tempdir");
std::fs::write(
tmp.path().join(CONFIG_TOML_FILE),
"approval_policy = \"on-request\"",
)
.unwrap();
let managed_path = tmp.path().join("managed_config.toml");
std::fs::write(&managed_path, "approval_policy = \"never\"").unwrap();
let managed_file = AbsolutePathBuf::try_from(managed_path.clone()).expect("managed file");
let service = ConfigService::new(
tmp.path().to_path_buf(),
vec![],
LoaderOverrides {
managed_config_path: Some(managed_path.clone()),
#[cfg(target_os = "macos")]
managed_preferences_base64: None,
macos_managed_config_requirements_base64: None,
},
);
let result = service
.write_value(ConfigValueWriteParams {
file_path: Some(tmp.path().join(CONFIG_TOML_FILE).display().to_string()),
key_path: "approval_policy".to_string(),
value: serde_json::json!("never"),
merge_strategy: MergeStrategy::Replace,
expected_version: None,
})
.await
.expect("result");
let read_after = service
.read(ConfigReadParams {
include_layers: true,
})
.await
.expect("read");
assert_eq!(
read_after.config.approval_policy,
Some(AskForApproval::Never)
);
assert_eq!(
read_after
.origins
.get("approval_policy")
.expect("origin")
.name,
ConfigLayerSource::LegacyManagedConfigTomlFromFile {
file: managed_file.clone()
}
);
assert_eq!(result.status, WriteStatus::Ok);
assert!(result.overridden_metadata.is_none());
}
#[tokio::test]
async fn version_conflict_rejected() {
let tmp = tempdir().expect("tempdir");
let user_path = tmp.path().join(CONFIG_TOML_FILE);
std::fs::write(&user_path, "model = \"user\"").unwrap();
let service = ConfigService::new_with_defaults(tmp.path().to_path_buf());
let error = service
.write_value(ConfigValueWriteParams {
file_path: Some(tmp.path().join(CONFIG_TOML_FILE).display().to_string()),
key_path: "model".to_string(),
value: serde_json::json!("gpt-5"),
merge_strategy: MergeStrategy::Replace,
expected_version: Some("sha256:bogus".to_string()),
})
.await
.expect_err("should fail");
assert_eq!(
error.write_error_code(),
Some(ConfigWriteErrorCode::ConfigVersionConflict)
);
}
#[tokio::test]
async fn write_value_defaults_to_user_config_path() {
let tmp = tempdir().expect("tempdir");
std::fs::write(tmp.path().join(CONFIG_TOML_FILE), "").unwrap();
let service = ConfigService::new_with_defaults(tmp.path().to_path_buf());
service
.write_value(ConfigValueWriteParams {
file_path: None,
key_path: "model".to_string(),
value: serde_json::json!("gpt-new"),
merge_strategy: MergeStrategy::Replace,
expected_version: None,
})
.await
.expect("write succeeds");
let contents =
std::fs::read_to_string(tmp.path().join(CONFIG_TOML_FILE)).expect("read config");
assert!(
contents.contains("model = \"gpt-new\""),
"config.toml should be updated even when file_path is omitted"
);
}
#[tokio::test]
async fn invalid_user_value_rejected_even_if_overridden_by_managed() {
let tmp = tempdir().expect("tempdir");
std::fs::write(tmp.path().join(CONFIG_TOML_FILE), "model = \"user\"").unwrap();
let managed_path = tmp.path().join("managed_config.toml");
std::fs::write(&managed_path, "approval_policy = \"never\"").unwrap();
let service = ConfigService::new(
tmp.path().to_path_buf(),
vec![],
LoaderOverrides {
managed_config_path: Some(managed_path.clone()),
#[cfg(target_os = "macos")]
managed_preferences_base64: None,
macos_managed_config_requirements_base64: None,
},
);
let error = service
.write_value(ConfigValueWriteParams {
file_path: Some(tmp.path().join(CONFIG_TOML_FILE).display().to_string()),
key_path: "approval_policy".to_string(),
value: serde_json::json!("bogus"),
merge_strategy: MergeStrategy::Replace,
expected_version: None,
})
.await
.expect_err("should fail validation");
assert_eq!(
error.write_error_code(),
Some(ConfigWriteErrorCode::ConfigValidationError)
);
let contents =
std::fs::read_to_string(tmp.path().join(CONFIG_TOML_FILE)).expect("read config");
assert_eq!(contents.trim(), "model = \"user\"");
}
#[tokio::test]
async fn read_reports_managed_overrides_user_and_session_flags() {
let tmp = tempdir().expect("tempdir");
let user_path = tmp.path().join(CONFIG_TOML_FILE);
std::fs::write(&user_path, "model = \"user\"").unwrap();
let user_file = AbsolutePathBuf::try_from(user_path.clone()).expect("user file");
let managed_path = tmp.path().join("managed_config.toml");
std::fs::write(&managed_path, "model = \"system\"").unwrap();
let managed_file = AbsolutePathBuf::try_from(managed_path.clone()).expect("managed file");
let cli_overrides = vec![(
"model".to_string(),
TomlValue::String("session".to_string()),
)];
let service = ConfigService::new(
tmp.path().to_path_buf(),
cli_overrides,
LoaderOverrides {
managed_config_path: Some(managed_path.clone()),
#[cfg(target_os = "macos")]
managed_preferences_base64: None,
macos_managed_config_requirements_base64: None,
},
);
let response = service
.read(ConfigReadParams {
include_layers: true,
})
.await
.expect("response");
assert_eq!(response.config.model.as_deref(), Some("system"));
assert_eq!(
response.origins.get("model").expect("origin").name,
ConfigLayerSource::LegacyManagedConfigTomlFromFile {
file: managed_file.clone()
},
);
let layers = response.layers.expect("layers");
assert_eq!(
layers.first().unwrap().name,
ConfigLayerSource::LegacyManagedConfigTomlFromFile { file: managed_file }
);
assert_eq!(layers.get(1).unwrap().name, ConfigLayerSource::SessionFlags);
assert_eq!(
layers.get(2).unwrap().name,
ConfigLayerSource::User { file: user_file }
);
}
#[tokio::test]
async fn write_value_reports_managed_override() {
let tmp = tempdir().expect("tempdir");
std::fs::write(tmp.path().join(CONFIG_TOML_FILE), "").unwrap();
let managed_path = tmp.path().join("managed_config.toml");
std::fs::write(&managed_path, "approval_policy = \"never\"").unwrap();
let managed_file = AbsolutePathBuf::try_from(managed_path.clone()).expect("managed file");
let service = ConfigService::new(
tmp.path().to_path_buf(),
vec![],
LoaderOverrides {
managed_config_path: Some(managed_path.clone()),
#[cfg(target_os = "macos")]
managed_preferences_base64: None,
macos_managed_config_requirements_base64: None,
},
);
let result = service
.write_value(ConfigValueWriteParams {
file_path: Some(tmp.path().join(CONFIG_TOML_FILE).display().to_string()),
key_path: "approval_policy".to_string(),
value: serde_json::json!("on-request"),
merge_strategy: MergeStrategy::Replace,
expected_version: None,
})
.await
.expect("result");
assert_eq!(result.status, WriteStatus::OkOverridden);
let overridden = result.overridden_metadata.expect("overridden metadata");
assert_eq!(
overridden.overriding_layer.name,
ConfigLayerSource::LegacyManagedConfigTomlFromFile { file: managed_file }
);
assert_eq!(overridden.effective_value, serde_json::json!("never"));
}
#[tokio::test]
async fn upsert_merges_tables_replace_overwrites() -> Result<()> {
let tmp = tempdir().expect("tempdir");
let path = tmp.path().join(CONFIG_TOML_FILE);
let base = r#"[mcp_servers.linear]
bearer_token_env_var = "TOKEN"
name = "linear"
url = "https://linear.example"
[mcp_servers.linear.env_http_headers]
existing = "keep"
[mcp_servers.linear.http_headers]
alpha = "a"
"#;
let overlay = serde_json::json!({
"bearer_token_env_var": "NEW_TOKEN",
"http_headers": {
"alpha": "updated",
"beta": "b"
},
"name": "linear",
"url": "https://linear.example"
});
std::fs::write(&path, base)?;
let service = ConfigService::new_with_defaults(tmp.path().to_path_buf());
service
.write_value(ConfigValueWriteParams {
file_path: Some(path.display().to_string()),
key_path: "mcp_servers.linear".to_string(),
value: overlay.clone(),
merge_strategy: MergeStrategy::Upsert,
expected_version: None,
})
.await
.expect("upsert succeeds");
let upserted: TomlValue = toml::from_str(&std::fs::read_to_string(&path)?)?;
let expected_upsert: TomlValue = toml::from_str(
r#"[mcp_servers.linear]
bearer_token_env_var = "NEW_TOKEN"
name = "linear"
url = "https://linear.example"
[mcp_servers.linear.env_http_headers]
existing = "keep"
[mcp_servers.linear.http_headers]
alpha = "updated"
beta = "b"
"#,
)?;
assert_eq!(upserted, expected_upsert);
std::fs::write(&path, base)?;
service
.write_value(ConfigValueWriteParams {
file_path: Some(path.display().to_string()),
key_path: "mcp_servers.linear".to_string(),
value: overlay,
merge_strategy: MergeStrategy::Replace,
expected_version: None,
})
.await
.expect("replace succeeds");
let replaced: TomlValue = toml::from_str(&std::fs::read_to_string(&path)?)?;
let expected_replace: TomlValue = toml::from_str(
r#"[mcp_servers.linear]
bearer_token_env_var = "NEW_TOKEN"
name = "linear"
url = "https://linear.example"
[mcp_servers.linear.http_headers]
alpha = "updated"
beta = "b"
"#,
)?;
assert_eq!(replaced, expected_replace);
Ok(())
}
}