use std::path::{Path, PathBuf};
use super::invocation::CapabilityResult;
use crate::core::io_boundary;
use crate::core::limits;
use crate::core::ocla::OclaError;
use crate::core::ocla::OclaResult;
use crate::core::tokens;
const MAX_CONTEXT_PATHS: usize = 32;
pub mod coverage;
#[cfg(unix)]
pub(crate) mod external_process;
pub mod native_context;
pub mod passthrough;
pub mod registry;
pub use coverage::{
CAPABILITY_COVERAGE_SCHEMA_VERSION, CapabilityCoverageCaseV1, CapabilityCoverageReportV1,
CapabilityCoverageResult, CapabilityCoverageScenario,
};
pub use native_context::NativeContextAdapter;
pub use passthrough::PassthroughAdapter;
pub use registry::{AdapterHealth, AdapterKey, AdapterRegistry};
pub(crate) fn read_context_paths(root: &Path, paths: &[String]) -> OclaResult<String> {
if paths.is_empty() {
return Err(OclaError::InvalidRequest(
"context request must contain at least one path".into(),
));
}
if paths.len() > MAX_CONTEXT_PATHS {
return Err(OclaError::InvalidRequest(format!(
"context request exceeds the {MAX_CONTEXT_PATHS} path limit"
)));
}
let root = root
.canonicalize()
.map_err(|error| OclaError::InvalidRequest(format!("invalid adapter root: {error}")))?;
let mut contents = Vec::with_capacity(paths.len());
let mut total_bytes = 0_usize;
let max_bytes = limits::max_read_bytes();
for path in paths {
if path.trim().is_empty() {
return Err(OclaError::InvalidRequest(
"context request path must not be empty".into(),
));
}
let requested = PathBuf::from(path);
let candidate = if requested.is_absolute() {
requested
} else {
root.join(requested)
};
let canonical = candidate.canonicalize().map_err(|error| {
OclaError::InvalidRequest(format!("cannot resolve context path {path}: {error}"))
})?;
if !canonical.starts_with(&root) {
return Err(OclaError::InvalidRequest(format!(
"context path escapes adapter root: {path}"
)));
}
let metadata = std::fs::symlink_metadata(&canonical).map_err(|error| {
OclaError::InvalidRequest(format!("cannot inspect context path {path}: {error}"))
})?;
if metadata.file_type().is_symlink() || !metadata.is_file() {
return Err(OclaError::InvalidRequest(format!(
"context path must be a regular non-symlink file: {path}"
)));
}
let declared_bytes = usize::try_from(metadata.len()).map_err(|_| {
OclaError::InvalidRequest(format!("context path is too large to read safely: {path}"))
})?;
let separator_bytes = usize::from(!contents.is_empty());
if total_bytes
.checked_add(separator_bytes)
.and_then(|total| total.checked_add(declared_bytes))
.is_none_or(|total| total > max_bytes)
{
return Err(OclaError::InvalidRequest(format!(
"context request exceeds the {max_bytes} byte limit"
)));
}
let canonical_string = canonical.to_string_lossy().into_owned();
let content = io_boundary::read_file_nofollow(&canonical_string).map_err(|error| {
OclaError::InvalidRequest(format!("cannot read context path {path}: {error}"))
})?;
total_bytes = total_bytes
.checked_add(separator_bytes)
.and_then(|total| total.checked_add(content.len()))
.ok_or_else(|| {
OclaError::InvalidRequest("context request byte count overflowed".into())
})?;
if total_bytes > max_bytes {
return Err(OclaError::InvalidRequest(format!(
"context request exceeds the {max_bytes} byte limit"
)));
}
contents.push(content);
}
Ok(contents.join("\n"))
}
pub(crate) fn invoke_passthrough_text(
invocation: &super::invocation::CapabilityInvocation,
text: &str,
start: std::time::Instant,
) -> OclaResult<CapabilityResult> {
let input_tokens = tokens::count_tokens(text) as u64;
if let Some(max) = invocation.policy_constraints.max_input_tokens
&& input_tokens > max
{
return Err(OclaError::InvalidRequest(format!(
"input exceeds policy token limit ({input_tokens} > {max})"
)));
}
let latency_ms = super::invocation::check_timeout(start, invocation.timeout_ms)?;
if let Some(max) = invocation.policy_constraints.max_latency_ms
&& latency_ms > max
{
return Err(OclaError::InvalidRequest(format!(
"capability latency exceeds policy limit ({latency_ms} > {max})"
)));
}
let output_tokens = input_tokens;
if let Some(max) = invocation.policy_constraints.max_output_tokens
&& output_tokens > max
{
return Err(OclaError::InvalidRequest(format!(
"output exceeds policy token limit ({output_tokens} > {max})"
)));
}
let output_ref = super::invocation::evidence_ref(text);
let observation = super::invocation::CapabilityObservationV1::success(
invocation,
input_tokens,
output_tokens,
latency_ms,
Some(output_ref.clone()),
);
Ok(CapabilityResult {
success: true,
output_tokens,
latency_ms,
observation,
evidence_ref: Some(output_ref),
})
}
#[cfg(test)]
mod tests {
use super::*;
use crate::core::ocla::invocation::{CapabilityAdapter, CapabilityInput, CapabilityInvocation};
use tempfile::tempdir;
fn invocation(task_id: &str, capability_id: &str, version: &str) -> CapabilityInvocation {
CapabilityInvocation {
task_id: task_id.into(),
capability_id: capability_id.into(),
capability_version: version.into(),
input: CapabilityInput::ContextRequest {
paths: vec!["fixture.rs".into()],
mode: "aggressive".into(),
budget_tokens: Some(100),
},
policy_constraints: Default::default(),
timeout_ms: 0,
}
}
#[test]
fn native_and_passthrough_emit_comparable_observations() {
let dir = tempdir().expect("fixture directory");
let fixture = "// repeated documentation\nfn main() {\n let value = 1;\n}\n";
std::fs::write(dir.path().join("fixture.rs"), fixture).expect("fixture write");
let native = NativeContextAdapter::with_root(dir.path());
let passthrough = PassthroughAdapter::with_root(dir.path());
let native_result = native
.invoke(invocation(
"task-1",
native.manifest().capability_id.as_str(),
native.manifest().version.as_str(),
))
.expect("native invocation");
let passthrough_result = passthrough
.invoke(invocation(
"task-1",
passthrough.manifest().capability_id.as_str(),
passthrough.manifest().version.as_str(),
))
.expect("passthrough invocation");
assert!(native_result.success);
assert!(passthrough_result.success);
assert_eq!(native_result.observation.task_id, "task-1");
assert_eq!(
native_result.observation.input_tokens,
passthrough_result.observation.input_tokens
);
assert!(
native_result.output_tokens <= passthrough_result.output_tokens,
"optimization must not emit more tokens for the fixture"
);
assert_ne!(
native_result.evidence_ref, passthrough_result.evidence_ref,
"the observation envelope must retain strategy-specific evidence"
);
}
#[test]
fn registry_registers_and_looks_up_by_id_and_version() {
let registry = AdapterRegistry::new();
registry
.register(NativeContextAdapter::new())
.expect("native registration");
let adapter = NativeContextAdapter::new();
let manifest = adapter.manifest().clone();
let found = registry
.lookup(manifest.capability_id.as_str(), manifest.version.as_str())
.expect("registered adapter");
assert_eq!(found.manifest().capability_id, manifest.capability_id);
assert_eq!(registry.list_available_adapters().len(), 1);
assert_eq!(registry.health_check_all().expect("health checks").len(), 1);
}
#[test]
fn context_reads_enforce_path_and_byte_bounds() {
let _guard = crate::core::data_dir::test_env_lock();
let dir = tempdir().expect("fixture directory");
crate::test_env::set_var("LEAN_CTX_MAX_READ_BYTES", "1024");
std::fs::write(dir.path().join("large.txt"), vec![b'x'; 1025])
.expect("large fixture write");
let over_bytes =
read_context_paths(&dir.path().canonicalize().unwrap(), &["large.txt".into()])
.expect_err("oversized context must fail");
assert!(over_bytes.to_string().contains("byte limit"));
let paths = (0..=MAX_CONTEXT_PATHS)
.map(|index| format!("fixture-{index}.txt"))
.collect::<Vec<_>>();
let over_paths =
read_context_paths(dir.path(), &paths).expect_err("too many paths must fail");
assert!(over_paths.to_string().contains("path limit"));
crate::test_env::remove_var("LEAN_CTX_MAX_READ_BYTES");
}
}