use crate::{
AutonomousServiceContract, AutonomousServiceStore, AutonomousServiceWorkload,
CommonContextRequirement, ContractContextRequirements, DirectGrpcBindings, DirectHttpBindings,
EventArtifactFormat, EventArtifactReference, EventContractArtifact,
ExtractionContractArtifactFormat, ExtractionContractDirection, ExtractionContractKind,
ExtractionInputPinKind, ExtractionPlan, ExtractionPlanInputs, ExtractionWorkloadRole,
ModuleManifest, ServiceArtifactFormat, ServiceArtifactReference, ServiceContractArtifact,
ServiceTenancyMode, WorkloadRole, ensure_extraction_plan_fresh, extraction_input_digest,
extraction_plan_integrity_is_valid, generate_direct_grpc_bindings,
generate_direct_http_bindings, validate_autonomous_service_artifact_references,
validate_autonomous_service_contract,
};
use schemars::JsonSchema;
use serde::{Deserialize, Serialize};
use serde_json::{Value, json};
use std::collections::{BTreeMap, BTreeSet};
use std::fmt;
use std::fs::{self, OpenOptions};
use std::io::Write as _;
use std::path::{Component, Path, PathBuf};
pub const EXTRACTION_SCAFFOLD_PROTOCOL: &str = "lenso.extraction-scaffold.v1";
pub const EXTRACTION_SCAFFOLD_GENERATOR_VERSION: &str = "lenso.extraction-scaffold-generator.v1";
const EXTRACTION_SCAFFOLD_SCHEMA_ID: &str =
"https://contracts.lenso.local/extraction/lenso.extraction-scaffold.v1.schema.json";
const EXTRACTION_SCAFFOLD_APPLY_PROTOCOL: &str = "lenso.extraction-scaffold-apply.v1";
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct ExtractionScaffoldArtifact {
pub contract_id: String,
pub version: String,
pub contents: String,
pub protobuf_descriptor: Option<Vec<u8>>,
}
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ExtractionScaffoldInputs {
pub plan: ExtractionPlan,
pub module: ModuleManifest,
pub artifacts: Vec<ExtractionScaffoldArtifact>,
}
#[derive(
Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize, JsonSchema,
)]
#[serde(rename_all = "snake_case")]
pub enum ExtractionScaffoldFileKind {
CargoManifest,
WorkloadEntrypoint,
ModuleManifest,
ServiceManifest,
ContractArtifact,
GeneratedBinding,
ServiceClient,
MigrationGuide,
OwnershipReceipt,
Readme,
RustLibrary,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize, JsonSchema)]
#[serde(rename_all = "camelCase")]
pub struct ExtractionScaffoldFile {
pub path: String,
pub kind: ExtractionScaffoldFileKind,
pub digest: String,
pub contents: String,
}
#[derive(
Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize, JsonSchema,
)]
#[serde(rename_all = "snake_case")]
pub enum ExtractionGeneratedBindingKind {
Http,
Grpc,
Event,
}
#[derive(
Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize, JsonSchema,
)]
#[serde(rename_all = "snake_case")]
pub enum ExtractionScaffoldBindingRole {
Server,
Client,
Publisher,
Handler,
}
#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize, JsonSchema)]
#[serde(rename_all = "camelCase")]
pub struct ExtractionGeneratedBinding {
pub contract_id: String,
pub version: String,
pub kind: ExtractionGeneratedBindingKind,
pub role: ExtractionScaffoldBindingRole,
pub artifact_path: String,
pub artifact_digest: String,
pub binding_path: String,
pub binding_digest: String,
pub tenancy_mode: ServiceTenancyMode,
#[serde(default)]
pub required_context: Vec<CommonContextRequirement>,
#[serde(default)]
pub operation_ids: Vec<String>,
#[serde(default)]
pub event_types: Vec<String>,
#[serde(default)]
pub generated_client_ids: Vec<String>,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize, JsonSchema)]
#[serde(rename_all = "camelCase")]
pub struct ExtractionPreservedIdentity {
pub module_name: String,
pub module_manifest_digest: String,
pub module_manifest: Value,
pub capabilities: Vec<String>,
pub operation_ids: Vec<String>,
pub event_types: Vec<String>,
pub runtime_function_names: Vec<String>,
pub schedule_names: Vec<String>,
pub workflow_identities: Vec<String>,
pub story_titles: Vec<String>,
pub admin_identity: Value,
pub console_identity: Value,
}
#[allow(clippy::struct_excessive_bools)]
#[derive(Debug, Clone, Copy, Default, PartialEq, Eq, Serialize, Deserialize, JsonSchema)]
#[serde(rename_all = "camelCase")]
pub struct ExtractionScaffoldEffects {
pub writes_repository_files: bool,
pub starts_workloads: bool,
pub copies_data: bool,
pub changes_authority: bool,
pub changes_provider_path: bool,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize, JsonSchema)]
#[serde(rename_all = "camelCase")]
pub struct ExtractionScaffold {
pub protocol: String,
pub generator_version: String,
pub scaffold_id: String,
pub scaffold_digest: String,
pub plan_id: String,
pub plan_digest: String,
pub target_module: String,
pub candidate_service_id: String,
pub destination_root: String,
pub linked_authority_remains_authoritative: bool,
pub provider_compatibility_preserved: bool,
pub preserved_identity: ExtractionPreservedIdentity,
pub candidate_service: Value,
pub bindings: Vec<ExtractionGeneratedBinding>,
pub local_behavior_ids: Vec<String>,
pub boundary_replacements: Vec<String>,
pub files: Vec<ExtractionScaffoldFile>,
pub patch: String,
pub effects: ExtractionScaffoldEffects,
}
#[derive(Serialize)]
#[serde(rename_all = "camelCase")]
struct ExtractionScaffoldContent<'a> {
protocol: &'a str,
generator_version: &'a str,
plan_id: &'a str,
plan_digest: &'a str,
target_module: &'a str,
candidate_service_id: &'a str,
destination_root: &'a str,
linked_authority_remains_authoritative: bool,
provider_compatibility_preserved: bool,
preserved_identity: &'a ExtractionPreservedIdentity,
candidate_service: &'a Value,
bindings: &'a [ExtractionGeneratedBinding],
local_behavior_ids: &'a [String],
boundary_replacements: &'a [String],
files: &'a [ExtractionScaffoldFile],
patch: &'a str,
effects: ExtractionScaffoldEffects,
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
#[serde(rename_all = "snake_case")]
pub enum ExtractionScaffoldGenerationIssueCode {
PlanInvalid,
ModuleIdentityMismatch,
ArtifactMissing,
ArtifactUnrecognized,
ArtifactDigestMismatch,
ArtifactInvalid,
BindingGenerationFailed,
OperationIdentityMismatch,
EventIdentityMismatch,
CandidateInvalid,
InvalidPath,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct ExtractionScaffoldGenerationError {
pub code: ExtractionScaffoldGenerationIssueCode,
pub message: String,
pub next_actions: Vec<String>,
}
impl fmt::Display for ExtractionScaffoldGenerationError {
fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str(&self.message)
}
}
impl std::error::Error for ExtractionScaffoldGenerationError {}
#[derive(
Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize, JsonSchema,
)]
#[serde(rename_all = "snake_case")]
pub enum ExtractionScaffoldIssueCode {
IntegrityInvalid,
FileDigestInvalid,
FilePathInvalid,
FileOrderInvalid,
PatchInvalid,
ModuleIdentityChanged,
CandidateServiceInvalid,
WorkloadEntrypointMissing,
BindingInvalid,
AuthorityChanged,
ProviderPathChanged,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize, JsonSchema)]
#[serde(rename_all = "camelCase")]
pub struct ExtractionScaffoldIssue {
pub code: ExtractionScaffoldIssueCode,
pub path: String,
pub message: String,
pub next_action: String,
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
#[serde(rename_all = "snake_case")]
pub enum ExtractionScaffoldApplyErrorCode {
PlanStale,
ScaffoldInvalid,
ScaffoldConflict,
RepositoryInvalid,
Io,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct ExtractionScaffoldApplyError {
pub code: ExtractionScaffoldApplyErrorCode,
pub message: String,
pub conflicting_paths: Vec<String>,
pub next_actions: Vec<String>,
pub effects: ExtractionScaffoldEffects,
}
impl fmt::Display for ExtractionScaffoldApplyError {
fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
formatter.write_str(&self.message)
}
}
impl std::error::Error for ExtractionScaffoldApplyError {}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize, JsonSchema)]
#[serde(rename_all = "camelCase")]
pub struct ExtractionScaffoldApplyResult {
pub protocol: String,
pub scaffold_id: String,
pub plan_id: String,
pub created_files: Vec<String>,
pub unchanged_files: Vec<String>,
pub linked_authority_remains_authoritative: bool,
pub effects: ExtractionScaffoldEffects,
}
#[derive(Debug)]
struct GeneratedBindingOutput {
binding: ExtractionGeneratedBinding,
contents: String,
}
pub fn generate_extraction_scaffold(
inputs: &ExtractionScaffoldInputs,
) -> Result<ExtractionScaffold, ExtractionScaffoldGenerationError> {
validate_scaffold_inputs(inputs)?;
let plan = &inputs.plan;
let destination_root = format!("services/{}", plan.proposed_service.service_id);
validate_relative_path(&destination_root).map_err(|message| {
generation_error(
ExtractionScaffoldGenerationIssueCode::InvalidPath,
message,
"Use a stable Service identity that produces a repository-relative destination.",
)
})?;
let artifacts = inputs
.artifacts
.iter()
.map(|artifact| {
(
(artifact.contract_id.as_str(), artifact.version.as_str()),
artifact,
)
})
.collect::<BTreeMap<_, _>>();
let mut files = Vec::new();
let mut generated_bindings = Vec::new();
for contract in &plan.proposed_service.contract_versions {
let artifact = artifacts
.get(&(contract.contract_id.as_str(), contract.version.as_str()))
.expect("validated artifacts cover every planned Contract Version");
files.push(scaffold_file(
&destination_root,
&contract.artifact_reference,
ExtractionScaffoldFileKind::ContractArtifact,
artifact.contents.clone(),
)?);
let output = generated_binding(plan, contract, artifact, &destination_root)?;
files.push(scaffold_file(
"",
&output.binding.binding_path,
ExtractionScaffoldFileKind::GeneratedBinding,
output.contents,
)?);
generated_bindings.push(output.binding);
}
generated_bindings.sort();
validate_manifest_contract_identities(&inputs.module, &generated_bindings)?;
let candidate_service = candidate_service(plan)?;
let candidate_service_value = serde_json::to_value(&candidate_service).map_err(|error| {
generation_error(
ExtractionScaffoldGenerationIssueCode::CandidateInvalid,
format!("Candidate Service could not serialize: {error}"),
"Correct the approved plan and regenerate the scaffold.",
)
})?;
let available_paths = plan
.proposed_service
.contract_versions
.iter()
.map(|contract| contract.artifact_reference.clone())
.collect::<BTreeSet<_>>();
let mut candidate_issues = validate_autonomous_service_contract(&candidate_service);
candidate_issues.extend(validate_autonomous_service_artifact_references(
&candidate_service_value,
&available_paths,
));
if let Some(issue) = candidate_issues.first() {
return Err(generation_error(
ExtractionScaffoldGenerationIssueCode::CandidateInvalid,
format!(
"Candidate Service is invalid at {}: {}",
issue.path, issue.message
),
issue.next_action.clone(),
));
}
let identity = preserved_identity(&inputs.module)?;
let crate_name = rust_identifier(&format!("{}_candidate", plan.proposed_service.service_id));
let module_json = pretty_json(&identity.module_manifest)?;
let service_json = pretty_json(&candidate_service_value)?;
files.extend([
scaffold_file(
&destination_root,
"Cargo.toml",
ExtractionScaffoldFileKind::CargoManifest,
cargo_manifest(&crate_name, &plan.proposed_service.workloads),
)?,
scaffold_file(
&destination_root,
"lenso.module.json",
ExtractionScaffoldFileKind::ModuleManifest,
module_json,
)?,
scaffold_file(
&destination_root,
"lenso.service.json",
ExtractionScaffoldFileKind::ServiceManifest,
service_json,
)?,
scaffold_file(
&destination_root,
"src/lib.rs",
ExtractionScaffoldFileKind::RustLibrary,
rust_library(&identity, &plan.proposed_service.service_id),
)?,
scaffold_file(
&destination_root,
"README.md",
ExtractionScaffoldFileKind::Readme,
candidate_readme(plan),
)?,
scaffold_file(
&destination_root,
"migrations/README.md",
ExtractionScaffoldFileKind::MigrationGuide,
migration_readme(plan),
)?,
]);
for workload in &plan.proposed_service.workloads {
let role = workload_role_label(workload.role);
files.push(scaffold_file(
&destination_root,
&format!("src/bin/{role}.rs"),
ExtractionScaffoldFileKind::WorkloadEntrypoint,
workload_entrypoint(
&plan.proposed_service.service_id,
&inputs.module.name,
&workload.workload_id,
role,
),
)?);
}
let mut boundary_replacements = Vec::new();
for client in &plan.proposed_service.generated_clients {
let binding = generated_bindings
.iter()
.find(|binding| {
binding.contract_id == client.contract_id && binding.version == client.version
})
.ok_or_else(|| {
generation_error(
ExtractionScaffoldGenerationIssueCode::BindingGenerationFailed,
format!(
"Generated client `{}` has no authoritative binding.",
client.client_id
),
"Pin and supply the authoritative HTTP or gRPC Contract artifact.",
)
})?;
let path = format!("generated/clients/{}.json", stable_slug(&client.client_id));
let value = json!({
"protocol": "lenso.generated-service-client.v1",
"clientId": client.client_id,
"ownerId": client.owner_id,
"contractId": client.contract_id,
"version": client.version,
"transport": binding_kind_label(binding.kind),
"artifact": client.artifact_reference,
"binding": strip_destination(&destination_root, &binding.binding_path),
"operationIds": binding.operation_ids,
"tenancyMode": binding.tenancy_mode,
"requiredContext": binding.required_context,
});
files.push(scaffold_file(
&destination_root,
&path,
ExtractionScaffoldFileKind::ServiceClient,
pretty_json(&value)?,
)?);
boundary_replacements.push(client.client_id.clone());
}
boundary_replacements.sort();
boundary_replacements.dedup();
files.sort_by(|left, right| left.path.cmp(&right.path));
ensure_unique_file_paths(&files)?;
let managed_files = files
.iter()
.map(|file| json!({ "path": file.path, "digest": file.digest }))
.collect::<Vec<_>>();
let receipt = json!({
"protocol": "lenso.extraction-scaffold-ownership.v1",
"generatorVersion": EXTRACTION_SCAFFOLD_GENERATOR_VERSION,
"planId": plan.plan_id,
"planDigest": plan.plan_digest,
"linkedAuthorityRemainsAuthoritative": true,
"managedFiles": managed_files,
});
files.push(scaffold_file(
&destination_root,
".lenso/extraction-scaffold.json",
ExtractionScaffoldFileKind::OwnershipReceipt,
pretty_json(&receipt)?,
)?);
files.sort_by(|left, right| left.path.cmp(&right.path));
let local_behavior_ids = local_behavior_ids(&inputs.module);
let patch = render_patch(&files);
let effects = ExtractionScaffoldEffects::default();
let content = ExtractionScaffoldContent {
protocol: EXTRACTION_SCAFFOLD_PROTOCOL,
generator_version: EXTRACTION_SCAFFOLD_GENERATOR_VERSION,
plan_id: &plan.plan_id,
plan_digest: &plan.plan_digest,
target_module: &inputs.module.name,
candidate_service_id: &plan.proposed_service.service_id,
destination_root: &destination_root,
linked_authority_remains_authoritative: true,
provider_compatibility_preserved: true,
preserved_identity: &identity,
candidate_service: &candidate_service_value,
bindings: &generated_bindings,
local_behavior_ids: &local_behavior_ids,
boundary_replacements: &boundary_replacements,
files: &files,
patch: &patch,
effects,
};
let scaffold_digest = digest_serializable(&content)?;
let scaffold = ExtractionScaffold {
protocol: EXTRACTION_SCAFFOLD_PROTOCOL.to_owned(),
generator_version: EXTRACTION_SCAFFOLD_GENERATOR_VERSION.to_owned(),
scaffold_id: format!("extraction-scaffold:{scaffold_digest}"),
scaffold_digest,
plan_id: plan.plan_id.clone(),
plan_digest: plan.plan_digest.clone(),
target_module: inputs.module.name.clone(),
candidate_service_id: plan.proposed_service.service_id.clone(),
destination_root,
linked_authority_remains_authoritative: true,
provider_compatibility_preserved: true,
preserved_identity: identity,
candidate_service: candidate_service_value,
bindings: generated_bindings,
local_behavior_ids,
boundary_replacements,
files,
patch,
effects,
};
debug_assert!(extraction_scaffold_integrity_is_valid(&scaffold));
Ok(scaffold)
}
pub fn dry_run_extraction_scaffold(
inputs: &ExtractionScaffoldInputs,
) -> Result<ExtractionScaffold, ExtractionScaffoldGenerationError> {
generate_extraction_scaffold(inputs)
}
fn validate_scaffold_inputs(
inputs: &ExtractionScaffoldInputs,
) -> Result<(), ExtractionScaffoldGenerationError> {
if !extraction_plan_integrity_is_valid(&inputs.plan) {
return Err(generation_error(
ExtractionScaffoldGenerationIssueCode::PlanInvalid,
"The approved Extraction Plan failed content-address validation.",
"Discard the modified plan and generate a fresh Extraction Plan.",
));
}
if inputs.plan.target_module != inputs.module.name
|| inputs.plan.proposed_service.module_id != inputs.module.name
{
return Err(generation_error(
ExtractionScaffoldGenerationIssueCode::ModuleIdentityMismatch,
"The linked Module identity does not match the approved Extraction Plan.",
"Load the exact Module declaration pinned by the plan.",
));
}
let module_digest = digest_serializable(&inputs.module)?;
let module_pin = inputs.plan.pinned_inputs.iter().find(|pin| {
pin.kind == ExtractionInputPinKind::ModuleDeclaration && pin.subject == inputs.module.name
});
if module_pin.is_none_or(|pin| pin.digest != module_digest) {
return Err(generation_error(
ExtractionScaffoldGenerationIssueCode::ModuleIdentityMismatch,
"The current Module declaration differs from the plan-pinned declaration.",
"Regenerate the Extraction Plan from the current Module declaration.",
));
}
let planned = inputs
.plan
.proposed_service
.contract_versions
.iter()
.map(|contract| (contract.contract_id.as_str(), contract.version.as_str()))
.collect::<BTreeSet<_>>();
let supplied = inputs
.artifacts
.iter()
.map(|artifact| (artifact.contract_id.as_str(), artifact.version.as_str()))
.collect::<BTreeSet<_>>();
if supplied.len() != inputs.artifacts.len() {
return Err(generation_error(
ExtractionScaffoldGenerationIssueCode::ArtifactUnrecognized,
"The scaffold input contains duplicate Contract artifacts.",
"Supply exactly one authoritative artifact for every planned Contract Version.",
));
}
if let Some((contract_id, version)) = planned.difference(&supplied).next() {
return Err(generation_error(
ExtractionScaffoldGenerationIssueCode::ArtifactMissing,
format!("Contract artifact `{contract_id}@{version}` is missing."),
"Supply the exact artifact pinned by the approved Extraction Plan.",
));
}
if let Some((contract_id, version)) = supplied.difference(&planned).next() {
return Err(generation_error(
ExtractionScaffoldGenerationIssueCode::ArtifactUnrecognized,
format!("Contract artifact `{contract_id}@{version}` is not in the plan."),
"Remove unplanned artifacts and regenerate the deterministic scaffold.",
));
}
for contract in &inputs.plan.proposed_service.contract_versions {
let artifact = inputs
.artifacts
.iter()
.find(|artifact| {
artifact.contract_id == contract.contract_id && artifact.version == contract.version
})
.expect("planned and supplied identity sets match");
if extraction_input_digest(artifact.contents.as_bytes()) != contract.artifact_digest {
return Err(generation_error(
ExtractionScaffoldGenerationIssueCode::ArtifactDigestMismatch,
format!(
"Contract artifact `{}@{}` does not match its pinned digest.",
contract.contract_id, contract.version
),
"Load the exact authoritative artifact or regenerate the Extraction Plan.",
));
}
validate_relative_path(&contract.artifact_reference).map_err(|message| {
generation_error(
ExtractionScaffoldGenerationIssueCode::InvalidPath,
message,
"Use a repository-relative authoritative Contract artifact path.",
)
})?;
}
Ok(())
}
fn generated_binding(
plan: &ExtractionPlan,
contract: &crate::ExtractionPlanContractVersion,
artifact: &ExtractionScaffoldArtifact,
destination_root: &str,
) -> Result<GeneratedBindingOutput, ExtractionScaffoldGenerationError> {
let role = match (contract.kind, contract.direction) {
(ExtractionContractKind::Service, ExtractionContractDirection::Provides) => {
ExtractionScaffoldBindingRole::Server
}
(ExtractionContractKind::Service, ExtractionContractDirection::Consumes) => {
ExtractionScaffoldBindingRole::Client
}
(ExtractionContractKind::Event, ExtractionContractDirection::Provides) => {
ExtractionScaffoldBindingRole::Publisher
}
(ExtractionContractKind::Event, ExtractionContractDirection::Consumes) => {
ExtractionScaffoldBindingRole::Handler
}
};
let client_ids = plan
.proposed_service
.generated_clients
.iter()
.filter(|client| {
client.contract_id == contract.contract_id && client.version == contract.version
})
.map(|client| client.client_id.clone())
.collect::<Vec<_>>();
let binding_name = format!(
"{}-{}-{}",
stable_slug(&contract.contract_id),
stable_slug(&contract.version),
binding_role_label(role)
);
let binding_relative = format!("generated/bindings/{binding_name}.json");
let binding_path = format!("{destination_root}/{binding_relative}");
let (kind, contents, operation_ids, event_types) = match contract.artifact_format {
ExtractionContractArtifactFormat::Openapi => {
let document = serde_yaml::from_str::<Value>(&artifact.contents).map_err(|error| {
generation_error(
ExtractionScaffoldGenerationIssueCode::ArtifactInvalid,
format!(
"OpenAPI artifact `{}@{}` is invalid: {error}",
contract.contract_id, contract.version
),
"Correct the authoritative OpenAPI artifact and regenerate the plan.",
)
})?;
let bindings =
generate_direct_http_bindings(&contract.contract_id, &contract.version, &document)
.map_err(|error| {
generation_error(
ExtractionScaffoldGenerationIssueCode::BindingGenerationFailed,
error.to_string(),
"Correct the authoritative OpenAPI operation and policy declarations.",
)
})?;
let operation_ids = bindings
.operations
.iter()
.map(|operation| operation.operation_id.clone())
.collect();
(
ExtractionGeneratedBindingKind::Http,
pretty_json(&serde_json::to_value(bindings).expect("bindings serialize"))?,
operation_ids,
Vec::new(),
)
}
ExtractionContractArtifactFormat::Protobuf
if contract.kind == ExtractionContractKind::Service =>
{
let descriptor = artifact.protobuf_descriptor.as_deref().ok_or_else(|| {
generation_error(
ExtractionScaffoldGenerationIssueCode::ArtifactInvalid,
format!(
"Protobuf artifact `{}@{}` is missing its generated descriptor.",
contract.contract_id, contract.version
),
"Generate the descriptor from the exact pinned Protobuf source.",
)
})?;
let bindings = generate_direct_grpc_bindings(
&contract.contract_id,
&contract.version,
&artifact.contents,
descriptor,
)
.map_err(|error| {
generation_error(
ExtractionScaffoldGenerationIssueCode::BindingGenerationFailed,
error,
"Correct the authoritative Protobuf operations and call-policy annotations.",
)
})?;
let operation_ids = bindings
.operations
.iter()
.map(|operation| operation.operation_id.clone())
.collect();
(
ExtractionGeneratedBindingKind::Grpc,
pretty_json(&serde_json::to_value(bindings).expect("bindings serialize"))?,
operation_ids,
Vec::new(),
)
}
ExtractionContractArtifactFormat::JsonSchema => {
let schema = serde_json::from_str::<Value>(&artifact.contents).map_err(|error| {
generation_error(
ExtractionScaffoldGenerationIssueCode::ArtifactInvalid,
format!(
"Event JSON Schema `{}@{}` is invalid: {error}",
contract.contract_id, contract.version
),
"Correct the authoritative Event Contract schema.",
)
})?;
jsonschema::validator_for(&schema).map_err(|error| {
generation_error(
ExtractionScaffoldGenerationIssueCode::ArtifactInvalid,
format!(
"Event JSON Schema `{}@{}` cannot compile: {error}",
contract.contract_id, contract.version
),
"Correct the authoritative Event Contract schema.",
)
})?;
let event_type = event_type_from_schema(&schema, &contract.artifact_reference)?;
let binding = json!({
"protocol": "lenso.generated-event-binding.v1",
"contractId": contract.contract_id,
"version": contract.version,
"eventType": event_type,
"direction": contract.direction,
"artifact": contract.artifact_reference,
"artifactDigest": contract.artifact_digest,
"tenancyMode": contract.tenancy_mode,
"requiredContext": contract.required_context,
});
(
ExtractionGeneratedBindingKind::Event,
pretty_json(&binding)?,
Vec::new(),
vec![event_type],
)
}
ExtractionContractArtifactFormat::Protobuf => {
return Err(generation_error(
ExtractionScaffoldGenerationIssueCode::BindingGenerationFailed,
format!(
"Event Protobuf scaffold generation is not available for `{}@{}`.",
contract.contract_id, contract.version
),
"Use the authoritative JSON Schema Event Contract for this beta scaffold.",
));
}
};
Ok(GeneratedBindingOutput {
binding: ExtractionGeneratedBinding {
contract_id: contract.contract_id.clone(),
version: contract.version.clone(),
kind,
role,
artifact_path: format!("{destination_root}/{}", contract.artifact_reference),
artifact_digest: contract.artifact_digest.clone(),
binding_path,
binding_digest: extraction_input_digest(contents.as_bytes()),
tenancy_mode: contract.tenancy_mode.clone(),
required_context: contract.required_context.clone(),
operation_ids,
event_types,
generated_client_ids: client_ids,
},
contents,
})
}
fn validate_manifest_contract_identities(
module: &ModuleManifest,
bindings: &[ExtractionGeneratedBinding],
) -> Result<(), ExtractionScaffoldGenerationError> {
let http_bindings = bindings
.iter()
.filter(|binding| {
binding.kind == ExtractionGeneratedBindingKind::Http
&& binding.role == ExtractionScaffoldBindingRole::Server
})
.collect::<Vec<_>>();
for route in &module.http_routes {
let Some(operation_id) = route
.operation
.as_ref()
.and_then(|operation| operation.operation_id.as_deref())
else {
continue;
};
if !http_bindings.iter().any(|binding| {
binding
.operation_ids
.iter()
.any(|item| item == operation_id)
}) {
return Err(generation_error(
ExtractionScaffoldGenerationIssueCode::OperationIdentityMismatch,
format!(
"Module operation `{operation_id}` is absent from the authoritative provided HTTP binding."
),
"Keep the Module operation identifier and authoritative OpenAPI operationId identical.",
));
}
}
let consumed_event_types = bindings
.iter()
.filter(|binding| binding.role == ExtractionScaffoldBindingRole::Handler)
.flat_map(|binding| binding.event_types.iter())
.collect::<BTreeSet<_>>();
for handler in module
.events
.iter()
.flat_map(|events| events.handlers.iter())
{
if !consumed_event_types.contains(&handler.event_name) {
return Err(generation_error(
ExtractionScaffoldGenerationIssueCode::EventIdentityMismatch,
format!(
"Module Event type `{}` is absent from the authoritative consumed Event bindings.",
handler.event_name
),
"Keep the Module Event type and authoritative Event Contract title identical.",
));
}
}
Ok(())
}
fn candidate_service(
plan: &ExtractionPlan,
) -> Result<AutonomousServiceContract, ExtractionScaffoldGenerationError> {
let service_id = &plan.proposed_service.service_id;
let workloads = plan
.proposed_service
.workloads
.iter()
.map(|workload| {
AutonomousServiceWorkload::new(
&workload.workload_id,
service_id,
match workload.role {
ExtractionWorkloadRole::Api => WorkloadRole::API,
ExtractionWorkloadRole::Worker => WorkloadRole::WORKER,
ExtractionWorkloadRole::Migration => WorkloadRole::MIGRATION,
},
)
})
.collect();
let tenancy_mode = plan
.proposed_service
.contract_versions
.iter()
.map(|contract| contract.tenancy_mode.clone())
.max()
.unwrap_or(ServiceTenancyMode::None);
let mut service = AutonomousServiceContract::new(
service_id,
workloads,
tenancy_mode,
vec!["local-sandbox".to_owned()],
);
service.version = Some("0.0.0-extraction-candidate".to_owned());
service.modules = vec![plan.target_module.clone()];
service.stores = vec![AutonomousServiceStore::new(
&plan.proposed_service.store.store_id,
service_id,
)];
for contract in &plan.proposed_service.contract_versions {
if contract.direction != ExtractionContractDirection::Provides {
continue;
}
match contract.kind {
ExtractionContractKind::Service => {
let format = match contract.artifact_format {
ExtractionContractArtifactFormat::Openapi => ServiceArtifactFormat::Openapi,
ExtractionContractArtifactFormat::Protobuf => ServiceArtifactFormat::Protobuf,
ExtractionContractArtifactFormat::JsonSchema => {
return Err(generation_error(
ExtractionScaffoldGenerationIssueCode::CandidateInvalid,
"A provided Service Contract cannot use JSON Schema as its transport artifact.",
"Correct the approved Contract Version.",
));
}
};
let mut declaration = ServiceContractArtifact::new(
&contract.contract_id,
&plan.target_module,
&contract.version,
contract.tenancy_mode.clone(),
ServiceArtifactReference::new(format, &contract.artifact_reference),
);
declaration.context =
ContractContextRequirements::new(contract.required_context.clone());
service.service_contracts.push(declaration);
}
ExtractionContractKind::Event => {
let format = match contract.artifact_format {
ExtractionContractArtifactFormat::JsonSchema => EventArtifactFormat::JsonSchema,
ExtractionContractArtifactFormat::Protobuf => EventArtifactFormat::Protobuf,
ExtractionContractArtifactFormat::Openapi => {
return Err(generation_error(
ExtractionScaffoldGenerationIssueCode::CandidateInvalid,
"A provided Event Contract cannot use OpenAPI as its artifact.",
"Correct the approved Contract Version.",
));
}
};
let mut declaration = EventContractArtifact::new(
&contract.contract_id,
&plan.target_module,
&contract.version,
contract.tenancy_mode.clone(),
EventArtifactReference::new(format, &contract.artifact_reference),
);
declaration.context =
ContractContextRequirements::new(contract.required_context.clone());
service.event_contracts.push(declaration);
}
}
}
service.service_contracts.sort_by(|left, right| {
(&left.contract_id, &left.version).cmp(&(&right.contract_id, &right.version))
});
service.event_contracts.sort_by(|left, right| {
(&left.contract_id, &left.version).cmp(&(&right.contract_id, &right.version))
});
Ok(service)
}
fn preserved_identity(
module: &ModuleManifest,
) -> Result<ExtractionPreservedIdentity, ExtractionScaffoldGenerationError> {
let module_manifest = serde_json::to_value(module).map_err(|error| {
generation_error(
ExtractionScaffoldGenerationIssueCode::ModuleIdentityMismatch,
format!("Module declaration could not serialize: {error}"),
"Correct the linked Module declaration before extraction.",
)
})?;
let runtime = module.runtime.as_ref();
let mut operation_ids = module
.http_routes
.iter()
.filter_map(|route| route.operation.as_ref()?.operation_id.clone())
.chain(runtime.into_iter().flat_map(|runtime| {
runtime
.functions
.iter()
.filter_map(|function| function.operation.as_ref()?.operation_id.clone())
}))
.collect::<Vec<_>>();
normalize_strings(&mut operation_ids);
let mut event_types = module
.events
.iter()
.flat_map(|events| {
events
.handlers
.iter()
.map(|handler| handler.event_name.clone())
})
.collect::<Vec<_>>();
normalize_strings(&mut event_types);
let mut runtime_function_names = runtime
.into_iter()
.flat_map(|runtime| {
runtime
.functions
.iter()
.map(|function| function.name.clone())
})
.collect::<Vec<_>>();
normalize_strings(&mut runtime_function_names);
let mut schedule_names = runtime
.into_iter()
.flat_map(|runtime| {
runtime
.schedules
.iter()
.map(|schedule| schedule.name.clone())
})
.collect::<Vec<_>>();
normalize_strings(&mut schedule_names);
let mut workflow_identities = runtime
.into_iter()
.flat_map(|runtime| {
runtime.workflows.iter().map(|workflow| {
format!("{}/{}@{}", workflow.owner, workflow.name, workflow.version)
})
})
.collect::<Vec<_>>();
normalize_strings(&mut workflow_identities);
let mut story_titles = module
.http_routes
.iter()
.filter_map(|route| route.story_title.clone())
.chain(
module
.story_display
.iter()
.filter_map(|story| story.story_title.clone()),
)
.collect::<Vec<_>>();
normalize_strings(&mut story_titles);
Ok(ExtractionPreservedIdentity {
module_name: module.name.clone(),
module_manifest_digest: digest_serializable(module)?,
module_manifest,
capabilities: module.capabilities.clone(),
operation_ids,
event_types,
runtime_function_names,
schedule_names,
workflow_identities,
story_titles,
admin_identity: serde_json::to_value(&module.admin).expect("admin identity serializes"),
console_identity: serde_json::to_value(&module.console)
.expect("console identity serializes"),
})
}
fn local_behavior_ids(module: &ModuleManifest) -> Vec<String> {
let mut behaviors = module
.http_routes
.iter()
.map(|route| {
route
.operation
.as_ref()
.and_then(|operation| operation.operation_id.clone())
.unwrap_or_else(|| format!("{} {}", http_method_label(route.method), route.path))
})
.chain(module.events.iter().flat_map(|events| {
events
.handlers
.iter()
.map(|handler| format!("event-handler:{}", handler.name))
}))
.chain(module.runtime.iter().flat_map(|runtime| {
runtime
.functions
.iter()
.map(|function| format!("runtime-function:{}", function.name))
}))
.chain(module.runtime.iter().flat_map(|runtime| {
runtime
.schedules
.iter()
.map(|schedule| format!("schedule:{}", schedule.name))
}))
.chain(module.runtime.iter().flat_map(|runtime| {
runtime.workflows.iter().map(|workflow| {
format!(
"workflow:{}/{}@{}",
workflow.owner, workflow.name, workflow.version
)
})
}))
.collect::<Vec<_>>();
normalize_strings(&mut behaviors);
behaviors
}
fn scaffold_file(
root: &str,
relative: &str,
kind: ExtractionScaffoldFileKind,
contents: String,
) -> Result<ExtractionScaffoldFile, ExtractionScaffoldGenerationError> {
let path = if root.is_empty() {
relative.to_owned()
} else {
format!("{root}/{relative}")
};
validate_relative_path(&path).map_err(|message| {
generation_error(
ExtractionScaffoldGenerationIssueCode::InvalidPath,
message,
"Use repository-relative generated file paths without traversal or platform prefixes.",
)
})?;
Ok(ExtractionScaffoldFile {
path,
kind,
digest: extraction_input_digest(contents.as_bytes()),
contents,
})
}
fn ensure_unique_file_paths(
files: &[ExtractionScaffoldFile],
) -> Result<(), ExtractionScaffoldGenerationError> {
let mut paths = BTreeSet::new();
if let Some(file) = files.iter().find(|file| !paths.insert(&file.path)) {
return Err(generation_error(
ExtractionScaffoldGenerationIssueCode::InvalidPath,
format!("Generated path `{}` is duplicated.", file.path),
"Correct the Contract identities so every generated output path is unique.",
));
}
Ok(())
}
fn event_type_from_schema(
schema: &Value,
artifact_reference: &str,
) -> Result<String, ExtractionScaffoldGenerationError> {
let title = schema
.get("title")
.and_then(Value::as_str)
.filter(|title| !title.trim().is_empty())
.ok_or_else(|| {
generation_error(
ExtractionScaffoldGenerationIssueCode::EventIdentityMismatch,
"An Event Contract schema must expose its stable Event type as `title`.",
"Set the JSON Schema title to the authoritative Event type.",
)
})?;
let file_identity = artifact_reference
.rsplit('/')
.next()
.and_then(|name| name.strip_suffix(".schema.json"));
if file_identity != Some(title) {
return Err(generation_error(
ExtractionScaffoldGenerationIssueCode::EventIdentityMismatch,
format!("Event type `{title}` does not match artifact `{artifact_reference}`."),
"Keep the Event type and authoritative schema filename identical.",
));
}
Ok(title.to_owned())
}
fn cargo_manifest(crate_name: &str, workloads: &[crate::ExtractionWorkloadPlan]) -> String {
let mut output = format!(
"[package]\nname = \"{crate_name}\"\nversion = \"0.0.0\"\nedition = \"2024\"\npublish = false\n\n[lib]\npath = \"src/lib.rs\"\n"
);
for workload in workloads {
let role = workload_role_label(workload.role);
output.push_str(&format!(
"\n[[bin]]\nname = \"{}\"\npath = \"src/bin/{role}.rs\"\n",
workload.workload_id
));
}
output
}
fn rust_library(identity: &ExtractionPreservedIdentity, service_id: &str) -> String {
format!(
"//! Generated extraction candidate. The linked Module remains authoritative.\n\npub const SERVICE_ID: &str = {};\npub const MODULE_ID: &str = {};\npub const LINKED_AUTHORITY_REMAINS_AUTHORITATIVE: bool = true;\npub const MODULE_MANIFEST_JSON: &str = include_str!(\"../lenso.module.json\");\npub const SERVICE_MANIFEST_JSON: &str = include_str!(\"../lenso.service.json\");\n\n#[must_use]\npub fn validate_public_entrypoints() -> bool {{\n !SERVICE_ID.is_empty()\n && !MODULE_ID.is_empty()\n && LINKED_AUTHORITY_REMAINS_AUTHORITATIVE\n && !MODULE_MANIFEST_JSON.is_empty()\n && !SERVICE_MANIFEST_JSON.is_empty()\n}}\n",
rust_string(service_id),
rust_string(&identity.module_name),
)
}
fn workload_entrypoint(service_id: &str, module_id: &str, workload_id: &str, role: &str) -> String {
format!(
"//! Generated {role} Workload validation entrypoint.\n\npub const SERVICE_ID: &str = {};\npub const MODULE_ID: &str = {};\npub const WORKLOAD_ID: &str = {};\npub const WORKLOAD_ROLE: &str = {};\n\npub fn run() {{\n println!(\"{{{{\\\"serviceId\\\":\\\"{{}}\\\",\\\"moduleId\\\":\\\"{{}}\\\",\\\"workloadId\\\":\\\"{{}}\\\",\\\"role\\\":\\\"{{}}\\\",\\\"authority\\\":\\\"linked_host\\\"}}}}\", SERVICE_ID, MODULE_ID, WORKLOAD_ID, WORKLOAD_ROLE);\n}}\n\nfn main() {{\n run();\n}}\n",
rust_string(service_id),
rust_string(module_id),
rust_string(workload_id),
rust_string(role),
)
}
fn candidate_readme(plan: &ExtractionPlan) -> String {
format!(
"# {} extraction candidate\n\nThis scaffold preserves Module `{}` and is bound to `{}`.\n\nThe linked Host remains authoritative. These API, Worker, and Migration entrypoints validate the candidate shape only; Store expansion and Workload startup belong to the next approved Extraction Plan phase.\n\nGenerated Contract bindings live under `generated/bindings/`; only planned cross-Service boundaries receive generated clients under `generated/clients/`. Existing Provider v1 files and behavior are not changed.\n",
plan.proposed_service.service_id, plan.target_module, plan.plan_id
)
}
fn migration_readme(plan: &ExtractionPlan) -> String {
let migrations = plan
.data_mapping
.migrations
.iter()
.map(|migration| {
format!(
"- `{}` from `{}` (`{}`)",
migration.source_migration, migration.source_reference, migration.source_digest
)
})
.collect::<Vec<_>>();
format!(
"# Candidate migrations\n\nThe Migration Workload is scaffolded, but this phase does not apply schema or data changes. The expand-first phase must copy the plan-owned migrations from authoritative Module sources and bind receipts to `{}`.\n\nPlanned Module migrations:\n{}\n",
plan.plan_id,
if migrations.is_empty() {
"- none declared".to_owned()
} else {
migrations.join("\n")
}
)
}
#[must_use]
pub fn render_extraction_scaffold_patch(scaffold: &ExtractionScaffold) -> String {
render_patch(&scaffold.files)
}
fn render_patch(files: &[ExtractionScaffoldFile]) -> String {
let mut output = String::new();
for file in files {
let line_count = file.contents.lines().count();
output.push_str(&format!(
"diff --git a/{0} b/{0}\nnew file mode 100644\n--- /dev/null\n+++ b/{0}\n@@ -0,0 +1,{line_count} @@\n",
file.path
));
for line in file.contents.split_inclusive('\n') {
output.push('+');
output.push_str(line);
if !line.ends_with('\n') {
output.push('\n');
output.push_str("\\ No newline at end of file\n");
}
}
}
output
}
#[must_use]
pub fn extraction_scaffold_integrity_is_valid(scaffold: &ExtractionScaffold) -> bool {
if scaffold.protocol != EXTRACTION_SCAFFOLD_PROTOCOL
|| scaffold.generator_version != EXTRACTION_SCAFFOLD_GENERATOR_VERSION
|| scaffold.scaffold_id != format!("extraction-scaffold:{}", scaffold.scaffold_digest)
{
return false;
}
let content = scaffold_content(scaffold);
digest_serializable(&content).is_ok_and(|digest| digest == scaffold.scaffold_digest)
}
fn scaffold_content(scaffold: &ExtractionScaffold) -> ExtractionScaffoldContent<'_> {
ExtractionScaffoldContent {
protocol: &scaffold.protocol,
generator_version: &scaffold.generator_version,
plan_id: &scaffold.plan_id,
plan_digest: &scaffold.plan_digest,
target_module: &scaffold.target_module,
candidate_service_id: &scaffold.candidate_service_id,
destination_root: &scaffold.destination_root,
linked_authority_remains_authoritative: scaffold.linked_authority_remains_authoritative,
provider_compatibility_preserved: scaffold.provider_compatibility_preserved,
preserved_identity: &scaffold.preserved_identity,
candidate_service: &scaffold.candidate_service,
bindings: &scaffold.bindings,
local_behavior_ids: &scaffold.local_behavior_ids,
boundary_replacements: &scaffold.boundary_replacements,
files: &scaffold.files,
patch: &scaffold.patch,
effects: scaffold.effects,
}
}
#[must_use]
pub fn validate_extraction_scaffold(scaffold: &ExtractionScaffold) -> Vec<ExtractionScaffoldIssue> {
let mut issues = Vec::new();
if !extraction_scaffold_integrity_is_valid(scaffold) {
push_issue(
&mut issues,
ExtractionScaffoldIssueCode::IntegrityInvalid,
"$.scaffoldDigest",
"The scaffold content address is invalid.",
"Discard the modified scaffold and regenerate it from the approved plan.",
);
}
if !scaffold.linked_authority_remains_authoritative || scaffold.effects.changes_authority {
push_issue(
&mut issues,
ExtractionScaffoldIssueCode::AuthorityChanged,
"$.linkedAuthorityRemainsAuthoritative",
"The scaffold phase must not change Module authority.",
"Keep the linked Host authoritative until protected Cutover.",
);
}
if !scaffold.provider_compatibility_preserved || scaffold.effects.changes_provider_path {
push_issue(
&mut issues,
ExtractionScaffoldIssueCode::ProviderPathChanged,
"$.providerCompatibilityPreserved",
"The scaffold must not reinterpret or modify Provider v1 behavior.",
"Generate the candidate under the Autonomous Service v2 destination only.",
);
}
if scaffold.effects.starts_workloads
|| scaffold.effects.copies_data
|| scaffold.effects.writes_repository_files
{
push_issue(
&mut issues,
ExtractionScaffoldIssueCode::AuthorityChanged,
"$.effects",
"A generated or dry-run scaffold must have zero effects.",
"Use apply only after reviewing the deterministic patch.",
);
}
let mut previous = None;
let mut paths = BTreeSet::new();
for (index, file) in scaffold.files.iter().enumerate() {
let path = format!("$.files[{index}]");
if validate_relative_path(&file.path).is_err()
|| !file
.path
.starts_with(&format!("{}/", scaffold.destination_root))
{
push_issue(
&mut issues,
ExtractionScaffoldIssueCode::FilePathInvalid,
&format!("{path}.path"),
"A generated file path escapes the candidate Service destination.",
"Regenerate the scaffold with repository-relative candidate paths.",
);
}
if !paths.insert(&file.path)
|| previous.is_some_and(|item: &str| item >= file.path.as_str())
{
push_issue(
&mut issues,
ExtractionScaffoldIssueCode::FileOrderInvalid,
&format!("{path}.path"),
"Generated file paths must be unique and deterministically ordered.",
"Regenerate the scaffold instead of reordering files manually.",
);
}
previous = Some(file.path.as_str());
if extraction_input_digest(file.contents.as_bytes()) != file.digest {
push_issue(
&mut issues,
ExtractionScaffoldIssueCode::FileDigestInvalid,
&format!("{path}.digest"),
"A generated file no longer matches its digest.",
"Discard the changed scaffold and regenerate it.",
);
}
}
if scaffold.patch != render_patch(&scaffold.files) {
push_issue(
&mut issues,
ExtractionScaffoldIssueCode::PatchInvalid,
"$.patch",
"The review patch does not match the generated files.",
"Regenerate the scaffold and review the exact patch.",
);
}
validate_scaffold_manifests(scaffold, &mut issues);
validate_scaffold_bindings(scaffold, &mut issues);
for role in ["api", "worker", "migration"] {
let expected = format!("{}/src/bin/{role}.rs", scaffold.destination_root);
if !paths.contains(&expected) {
push_issue(
&mut issues,
ExtractionScaffoldIssueCode::WorkloadEntrypointMissing,
"$.files",
&format!("The {role} Workload entrypoint is missing."),
"Regenerate all planned Workload entrypoints.",
);
}
}
issues.sort_by(|left, right| (&left.path, &left.code).cmp(&(&right.path, &right.code)));
issues
}
fn validate_scaffold_manifests(
scaffold: &ExtractionScaffold,
issues: &mut Vec<ExtractionScaffoldIssue>,
) {
let module_path = format!("{}/lenso.module.json", scaffold.destination_root);
let module = scaffold.files.iter().find(|file| file.path == module_path);
let module_matches = module
.and_then(|file| serde_json::from_str::<Value>(&file.contents).ok())
.is_some_and(|value| value == scaffold.preserved_identity.module_manifest);
if !module_matches {
push_issue(
issues,
ExtractionScaffoldIssueCode::ModuleIdentityChanged,
"$.preservedIdentity.moduleManifest",
"The generated Module declaration does not preserve the linked Module identity.",
"Regenerate the candidate from the exact plan-pinned ModuleManifest.",
);
}
let candidate_issues = validate_autonomous_service_contract_value_for_scaffold(
&scaffold.candidate_service,
scaffold,
);
if let Some(message) = candidate_issues.first() {
push_issue(
issues,
ExtractionScaffoldIssueCode::CandidateServiceInvalid,
"$.candidateService",
message,
"Regenerate the candidate Service from the approved plan.",
);
}
}
fn validate_autonomous_service_contract_value_for_scaffold(
value: &Value,
scaffold: &ExtractionScaffold,
) -> Vec<String> {
let contract = serde_json::from_value::<AutonomousServiceContract>(value.clone());
let Ok(contract) = contract else {
return vec!["Candidate Service JSON cannot be decoded.".to_owned()];
};
let mut messages = validate_autonomous_service_contract(&contract)
.into_iter()
.map(|issue| issue.message)
.collect::<Vec<_>>();
if contract.service_id != scaffold.candidate_service_id
|| contract.modules != [scaffold.target_module.clone()]
{
messages.push("Candidate Service or Module identity changed.".to_owned());
}
messages
}
fn validate_scaffold_bindings(
scaffold: &ExtractionScaffold,
issues: &mut Vec<ExtractionScaffoldIssue>,
) {
for (index, binding) in scaffold.bindings.iter().enumerate() {
let file = scaffold
.files
.iter()
.find(|file| file.path == binding.binding_path);
let valid_digest = file.is_some_and(|file| file.digest == binding.binding_digest);
let valid_identity = file.is_some_and(|file| match binding.kind {
ExtractionGeneratedBindingKind::Http => {
serde_json::from_str::<DirectHttpBindings>(&file.contents).is_ok_and(|value| {
value.contract_id == binding.contract_id
&& value.version == binding.version
&& value
.operations
.iter()
.map(|operation| &operation.operation_id)
.eq(binding.operation_ids.iter())
})
}
ExtractionGeneratedBindingKind::Grpc => {
serde_json::from_str::<DirectGrpcBindings>(&file.contents).is_ok_and(|value| {
value.contract_id == binding.contract_id
&& value.version == binding.version
&& value
.operations
.iter()
.map(|operation| &operation.operation_id)
.eq(binding.operation_ids.iter())
})
}
ExtractionGeneratedBindingKind::Event => serde_json::from_str::<Value>(&file.contents)
.is_ok_and(|value| {
value.get("contractId").and_then(Value::as_str)
== Some(binding.contract_id.as_str())
&& value.get("version").and_then(Value::as_str)
== Some(binding.version.as_str())
&& value.get("eventType").and_then(Value::as_str)
== binding.event_types.first().map(String::as_str)
}),
});
if !valid_digest || !valid_identity {
push_issue(
issues,
ExtractionScaffoldIssueCode::BindingInvalid,
&format!("$.bindings[{index}]"),
"A generated binding does not match its authoritative Contract identity.",
"Regenerate bindings from the exact pinned Contract artifact.",
);
}
}
}
pub fn apply_extraction_scaffold(
repository_root: &Path,
scaffold: &ExtractionScaffold,
plan: &ExtractionPlan,
current_inputs: &ExtractionPlanInputs,
) -> Result<ExtractionScaffoldApplyResult, ExtractionScaffoldApplyError> {
if !repository_root.is_dir() {
return Err(apply_error(
ExtractionScaffoldApplyErrorCode::RepositoryInvalid,
"The scaffold repository root is not an existing directory.",
Vec::new(),
"Select the intended repository root before applying the scaffold.",
));
}
let issues = validate_extraction_scaffold(scaffold);
if !issues.is_empty()
|| plan.plan_id != scaffold.plan_id
|| plan.plan_digest != scaffold.plan_digest
|| !extraction_plan_integrity_is_valid(plan)
{
return Err(apply_error(
ExtractionScaffoldApplyErrorCode::ScaffoldInvalid,
"The scaffold or its approved Extraction Plan failed integrity validation.",
Vec::new(),
"Discard the modified artifacts and regenerate the exact scaffold patch.",
));
}
ensure_extraction_plan_fresh(plan, current_inputs).map_err(|rejection| {
ExtractionScaffoldApplyError {
code: ExtractionScaffoldApplyErrorCode::PlanStale,
message: rejection.message,
conflicting_paths: Vec::new(),
next_actions: rejection.next_actions,
effects: ExtractionScaffoldEffects::default(),
}
})?;
let mut created = Vec::new();
let mut unchanged = Vec::new();
let mut conflicts = Vec::new();
for file in &scaffold.files {
let path = repository_root.join(&file.path);
ensure_no_symlink_ancestors(repository_root, &path).map_err(|message| {
apply_error(
ExtractionScaffoldApplyErrorCode::ScaffoldConflict,
message,
vec![file.path.clone()],
"Remove the symlinked target or choose a clean extraction destination.",
)
})?;
match fs::read(&path) {
Ok(contents) if contents == file.contents.as_bytes() => {
unchanged.push(file.path.clone());
}
Ok(_) => conflicts.push(file.path.clone()),
Err(error) if error.kind() == std::io::ErrorKind::NotFound => {
if path.exists() {
conflicts.push(file.path.clone());
} else {
created.push(file.path.clone());
}
}
Err(error) => {
return Err(apply_error(
ExtractionScaffoldApplyErrorCode::Io,
format!("Could not inspect `{}`: {error}", file.path),
vec![file.path.clone()],
"Resolve repository permissions and retry the unchanged scaffold.",
));
}
}
}
if !conflicts.is_empty() {
conflicts.sort();
return Err(apply_error(
ExtractionScaffoldApplyErrorCode::ScaffoldConflict,
"Scaffold apply refused to overwrite changed or unrecognized user files.",
conflicts,
"Review the conflicting files, move the candidate destination, or regenerate from the current repository state.",
));
}
for file in scaffold
.files
.iter()
.filter(|file| created.binary_search(&file.path).is_ok())
{
let path = repository_root.join(&file.path);
let parent = path.parent().expect("generated files have a parent");
fs::create_dir_all(parent).map_err(|error| {
apply_error(
ExtractionScaffoldApplyErrorCode::Io,
format!("Could not create `{}`: {error}", parent.display()),
vec![file.path.clone()],
"Resolve repository permissions and retry the same content-addressed scaffold.",
)
})?;
ensure_no_symlink_ancestors(repository_root, &path).map_err(|message| {
apply_error(
ExtractionScaffoldApplyErrorCode::ScaffoldConflict,
message,
vec![file.path.clone()],
"Remove the symlinked target or choose a clean extraction destination.",
)
})?;
let mut output = OpenOptions::new()
.write(true)
.create_new(true)
.open(&path)
.map_err(|error| {
apply_error(
ExtractionScaffoldApplyErrorCode::ScaffoldConflict,
format!("Refused to create `{}`: {error}", file.path),
vec![file.path.clone()],
"Inspect the target created after preflight and retry only after it is resolved.",
)
})?;
output
.write_all(file.contents.as_bytes())
.map_err(|error| {
apply_error(
ExtractionScaffoldApplyErrorCode::Io,
format!("Could not write `{}`: {error}", file.path),
vec![file.path.clone()],
"Resolve the filesystem error before retrying the content-addressed scaffold.",
)
})?;
}
created.sort();
unchanged.sort();
Ok(ExtractionScaffoldApplyResult {
protocol: EXTRACTION_SCAFFOLD_APPLY_PROTOCOL.to_owned(),
scaffold_id: scaffold.scaffold_id.clone(),
plan_id: scaffold.plan_id.clone(),
effects: ExtractionScaffoldEffects {
writes_repository_files: !created.is_empty(),
..ExtractionScaffoldEffects::default()
},
created_files: created,
unchanged_files: unchanged,
linked_authority_remains_authoritative: true,
})
}
fn ensure_no_symlink_ancestors(root: &Path, target: &Path) -> Result<(), String> {
let relative = target
.strip_prefix(root)
.map_err(|_| "Generated target escaped the repository root.".to_owned())?;
let mut current = PathBuf::from(root);
for component in relative.components() {
current.push(component.as_os_str());
match fs::symlink_metadata(¤t) {
Ok(metadata) if metadata.file_type().is_symlink() => {
return Err(format!(
"Scaffold target `{}` traverses a symbolic link.",
current.display()
));
}
Ok(_) => {}
Err(error) if error.kind() == std::io::ErrorKind::NotFound => break,
Err(error) => {
return Err(format!(
"Could not inspect scaffold target `{}`: {error}",
current.display()
));
}
}
}
Ok(())
}
pub fn extraction_scaffold_json(
scaffold: &ExtractionScaffold,
) -> Result<String, serde_json::Error> {
serde_json::to_string_pretty(scaffold).map(|value| format!("{value}\n"))
}
#[must_use]
pub fn extraction_scaffold_schema() -> Value {
let mut schema = serde_json::to_value(schemars::schema_for!(ExtractionScaffold))
.expect("Extraction Scaffold schema must serialize");
let object = schema
.as_object_mut()
.expect("Extraction Scaffold schema must be an object");
object.insert(
"$id".to_owned(),
Value::String(EXTRACTION_SCAFFOLD_SCHEMA_ID.to_owned()),
);
object.insert(
"title".to_owned(),
Value::String("Lenso Extraction Scaffold v1".to_owned()),
);
schema["properties"]["protocol"] = json!({
"type": "string",
"const": EXTRACTION_SCAFFOLD_PROTOCOL
});
schema["properties"]["generatorVersion"] = json!({
"type": "string",
"const": EXTRACTION_SCAFFOLD_GENERATOR_VERSION
});
schema["properties"]["scaffoldId"] = json!({
"type": "string",
"pattern": "^extraction-scaffold:sha256:[0-9a-f]{64}$"
});
schema["properties"]["scaffoldDigest"] = json!({
"type": "string",
"pattern": "^sha256:[0-9a-f]{64}$"
});
for field in [
"writesRepositoryFiles",
"startsWorkloads",
"copiesData",
"changesAuthority",
"changesProviderPath",
] {
schema["$defs"]["ExtractionScaffoldEffects"]["properties"][field] = json!({
"type": "boolean",
"const": false
});
}
schema
}
fn validate_relative_path(path: &str) -> Result<(), String> {
if path.trim().is_empty() || path.contains('\\') {
return Err(format!(
"Generated path `{path}` is not repository-relative."
));
}
let path = Path::new(path);
if path.is_absolute()
|| path.components().any(|component| {
matches!(
component,
Component::ParentDir | Component::RootDir | Component::Prefix(_)
)
})
|| path
.components()
.any(|component| component == Component::CurDir)
{
return Err(format!(
"Generated path `{}` contains unsafe traversal.",
path.display()
));
}
Ok(())
}
fn digest_serializable<T: Serialize + ?Sized>(
value: &T,
) -> Result<String, ExtractionScaffoldGenerationError> {
let bytes = serde_json::to_vec(value).map_err(|error| {
generation_error(
ExtractionScaffoldGenerationIssueCode::CandidateInvalid,
format!("Extraction scaffold content could not serialize: {error}"),
"Correct the structured scaffold input and regenerate.",
)
})?;
Ok(extraction_input_digest(&bytes))
}
fn pretty_json(value: &Value) -> Result<String, ExtractionScaffoldGenerationError> {
serde_json::to_string_pretty(value)
.map(|value| format!("{value}\n"))
.map_err(|error| {
generation_error(
ExtractionScaffoldGenerationIssueCode::CandidateInvalid,
format!("Generated JSON could not serialize: {error}"),
"Correct the structured scaffold input and regenerate.",
)
})
}
fn generation_error(
code: ExtractionScaffoldGenerationIssueCode,
message: impl Into<String>,
next_action: impl Into<String>,
) -> ExtractionScaffoldGenerationError {
ExtractionScaffoldGenerationError {
code,
message: message.into(),
next_actions: vec![next_action.into()],
}
}
fn apply_error(
code: ExtractionScaffoldApplyErrorCode,
message: impl Into<String>,
conflicting_paths: Vec<String>,
next_action: impl Into<String>,
) -> ExtractionScaffoldApplyError {
ExtractionScaffoldApplyError {
code,
message: message.into(),
conflicting_paths,
next_actions: vec![next_action.into()],
effects: ExtractionScaffoldEffects::default(),
}
}
fn push_issue(
issues: &mut Vec<ExtractionScaffoldIssue>,
code: ExtractionScaffoldIssueCode,
path: impl Into<String>,
message: impl Into<String>,
next_action: impl Into<String>,
) {
issues.push(ExtractionScaffoldIssue {
code,
path: path.into(),
message: message.into(),
next_action: next_action.into(),
});
}
fn stable_slug(value: &str) -> String {
let mut slug = String::new();
let mut separator = false;
for character in value.chars() {
if character.is_ascii_alphanumeric() {
if separator && !slug.is_empty() {
slug.push('-');
}
slug.push(character.to_ascii_lowercase());
separator = false;
} else {
separator = true;
}
}
slug
}
fn rust_identifier(value: &str) -> String {
let mut identifier = value
.chars()
.map(|character| {
if character.is_ascii_alphanumeric() {
character.to_ascii_lowercase()
} else {
'_'
}
})
.collect::<String>();
while identifier.contains("__") {
identifier = identifier.replace("__", "_");
}
identifier.trim_matches('_').to_owned()
}
fn rust_string(value: &str) -> String {
serde_json::to_string(value).expect("JSON strings are valid Rust string literals here")
}
fn normalize_strings(values: &mut Vec<String>) {
values.retain(|value| !value.trim().is_empty());
values.sort();
values.dedup();
}
fn strip_destination<'a>(destination: &str, path: &'a str) -> &'a str {
path.strip_prefix(destination)
.and_then(|path| path.strip_prefix('/'))
.unwrap_or(path)
}
const fn binding_kind_label(kind: ExtractionGeneratedBindingKind) -> &'static str {
match kind {
ExtractionGeneratedBindingKind::Http => "http",
ExtractionGeneratedBindingKind::Grpc => "grpc",
ExtractionGeneratedBindingKind::Event => "event",
}
}
const fn binding_role_label(role: ExtractionScaffoldBindingRole) -> &'static str {
match role {
ExtractionScaffoldBindingRole::Server => "server",
ExtractionScaffoldBindingRole::Client => "client",
ExtractionScaffoldBindingRole::Publisher => "publisher",
ExtractionScaffoldBindingRole::Handler => "handler",
}
}
const fn workload_role_label(role: ExtractionWorkloadRole) -> &'static str {
match role {
ExtractionWorkloadRole::Api => "api",
ExtractionWorkloadRole::Worker => "worker",
ExtractionWorkloadRole::Migration => "migration",
}
}
fn http_method_label(method: lenso_contracts::ModuleHttpMethod) -> &'static str {
match method {
lenso_contracts::ModuleHttpMethod::Get => "GET",
lenso_contracts::ModuleHttpMethod::Post => "POST",
lenso_contracts::ModuleHttpMethod::Put => "PUT",
lenso_contracts::ModuleHttpMethod::Patch => "PATCH",
lenso_contracts::ModuleHttpMethod::Delete => "DELETE",
_ => "UNKNOWN",
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::{
CompatibilityCategory, EXTRACTION_READINESS_ANALYZER_VERSION,
EXTRACTION_READINESS_REPORT_PROTOCOL, ExtractionAuthorityKind, ExtractionContractEvidence,
ExtractionDataEvidenceSource, ExtractionDataTableEvidence, ExtractionEvidenceDigest,
ExtractionEvidenceStatus, ExtractionExpectedAuthority, ExtractionPlanContractVersion,
ExtractionPlanInputs, ExtractionReadinessEffects, ExtractionReadinessReport,
ExtractionReadinessSurfaceSummary, ExtractionServiceDataEvidence, generate_extraction_plan,
};
use lenso_contracts::{
EventHandlerDeclaration, EventSurface, ModuleHttpMethod, ModuleHttpRoute,
ServiceOperationMetadata,
};
use std::sync::atomic::{AtomicU64, Ordering};
static TEMP_SEQUENCE: AtomicU64 = AtomicU64::new(1);
fn module() -> ModuleManifest {
ModuleManifest::builder("support-ticket")
.capabilities(vec!["support.tickets.read".to_owned()])
.http_routes(vec![ModuleHttpRoute {
method: ModuleHttpMethod::Get,
path: "/v1/tickets/{ticket_id}".to_owned(),
capability: Some("support.tickets.read".to_owned()),
display_name: Some("Get ticket".to_owned()),
story_title: Some("Support ticket opened".to_owned()),
operation: Some(ServiceOperationMetadata {
operation_id: Some("getTicket".to_owned()),
..ServiceOperationMetadata::default()
}),
}])
.events(EventSurface {
handlers: vec![EventHandlerDeclaration {
name: "apply_sla_update".to_owned(),
event_name: "support.sla-updated.v1".to_owned(),
operation: None,
}],
})
.build()
}
fn event_schema() -> String {
serde_json::to_string_pretty(&json!({
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "https://contracts.lenso.local/events/support.sla-updated.v1.schema.json",
"title": "support.sla-updated.v1",
"type": "object",
"properties": { "ticketId": { "type": "string" } },
"additionalProperties": false
}))
.map(|value| format!("{value}\n"))
.unwrap()
}
fn current_inputs() -> ExtractionPlanInputs {
let module = module();
let http = crate::DIRECT_HTTP_OPENAPI_V1_FIXTURE_YAML;
let event = event_schema();
ExtractionPlanInputs {
readiness_report: ExtractionReadinessReport {
protocol: EXTRACTION_READINESS_REPORT_PROTOCOL.to_owned(),
analyzer_version: EXTRACTION_READINESS_ANALYZER_VERSION.to_owned(),
target_module: module.name.clone(),
system_id: Some("support-system".to_owned()),
target_owner: Some("support-host".to_owned()),
classification: CompatibilityCategory::Safe,
ready: true,
issue_codes: Vec::new(),
contract_evidence: vec![
ExtractionContractEvidence {
subject: "http:GET /v1/tickets/{ticket_id}".to_owned(),
kind: ExtractionContractKind::Service,
direction: ExtractionContractDirection::Provides,
status: ExtractionEvidenceStatus::Present,
contract_id: Some("support-ticket-http.v1".to_owned()),
evidence_references: vec!["contracts/openapi/support.v1.yaml".to_owned()],
},
ExtractionContractEvidence {
subject: "event-handler:apply_sla_update".to_owned(),
kind: ExtractionContractKind::Event,
direction: ExtractionContractDirection::Consumes,
status: ExtractionEvidenceStatus::Present,
contract_id: Some("support.sla-updated.v1".to_owned()),
evidence_references: vec![
"contracts/events/support.sla-updated.v1.schema.json".to_owned(),
],
},
],
active_consumers: Vec::new(),
surfaces: ExtractionReadinessSurfaceSummary::default(),
service_data: ExtractionServiceDataEvidence {
complete: true,
tables: vec![ExtractionDataTableEvidence {
table: "support.tickets".to_owned(),
owner_module: Some("support-ticket".to_owned()),
source: ExtractionDataEvidenceSource::StaticDeclaration,
volume: None,
cursor: None,
evidence_references: Vec::new(),
}],
..ExtractionServiceDataEvidence::default()
},
findings: Vec::new(),
effects: ExtractionReadinessEffects::default(),
},
module,
system: json!({
"protocol": "lenso.system.v2",
"systemId": "support-system",
"host": { "hostId": "support-host", "modules": ["support-ticket"] },
"providers": [{
"providerId": "notification-provider",
"modules": ["notification-gateway"]
}],
"autonomousServices": [{
"serviceId": "support-sla-service",
"modules": ["support-sla"],
"workloads": [{ "workloadId": "support-sla-api", "role": "api" }]
}],
"contracts": [{
"contractId": "support.sla-updated.v1",
"version": "v1",
"producerKind": "autonomous_service",
"producerId": "support-sla-service",
"artifact": {
"format": "json_schema",
"path": "contracts/events/support.sla-updated.v1.schema.json"
},
"tenancyMode": "required"
}],
"consumers": [{
"consumerId": "support-ticket-sla-updates",
"ownerKind": "host",
"ownerId": "support-host",
"contractId": "support.sla-updated.v1",
"tenancyMode": "required"
}]
}),
contract_versions: vec![
ExtractionPlanContractVersion {
contract_id: "support-ticket-http.v1".to_owned(),
version: "v1".to_owned(),
kind: ExtractionContractKind::Service,
direction: ExtractionContractDirection::Provides,
artifact_reference: "contracts/openapi/support.v1.yaml".to_owned(),
artifact_digest: extraction_input_digest(http.as_bytes()),
artifact_format: ExtractionContractArtifactFormat::Openapi,
tenancy_mode: ServiceTenancyMode::Required,
required_context: vec![CommonContextRequirement::Tenant],
producer_id: None,
consumer_ids: Vec::new(),
},
ExtractionPlanContractVersion {
contract_id: "support.sla-updated.v1".to_owned(),
version: "v1".to_owned(),
kind: ExtractionContractKind::Event,
direction: ExtractionContractDirection::Consumes,
artifact_reference: "contracts/events/support.sla-updated.v1.schema.json"
.to_owned(),
artifact_digest: extraction_input_digest(event.as_bytes()),
artifact_format: ExtractionContractArtifactFormat::JsonSchema,
tenancy_mode: ServiceTenancyMode::Required,
required_context: vec![CommonContextRequirement::Tenant],
producer_id: Some("support-sla-service".to_owned()),
consumer_ids: Vec::new(),
},
],
expected_authority: ExtractionExpectedAuthority {
kind: ExtractionAuthorityKind::LinkedHost,
owner_id: "support-host".to_owned(),
revision: "support-r1".to_owned(),
},
evidence_digests: vec![ExtractionEvidenceDigest {
reference: "analyzer:support".to_owned(),
digest: extraction_input_digest(b"support-evidence"),
}],
}
}
fn scaffold_inputs() -> (ExtractionScaffoldInputs, ExtractionPlanInputs) {
let current = current_inputs();
let plan = generate_extraction_plan(¤t).expect("plan");
(
ExtractionScaffoldInputs {
plan,
module: current.module.clone(),
artifacts: vec![
ExtractionScaffoldArtifact {
contract_id: "support-ticket-http.v1".to_owned(),
version: "v1".to_owned(),
contents: crate::DIRECT_HTTP_OPENAPI_V1_FIXTURE_YAML.to_owned(),
protobuf_descriptor: None,
},
ExtractionScaffoldArtifact {
contract_id: "support.sla-updated.v1".to_owned(),
version: "v1".to_owned(),
contents: event_schema(),
protobuf_descriptor: None,
},
],
},
current,
)
}
#[test]
fn dry_run_is_deterministic_identity_preserving_and_zero_effect() {
let (inputs, _) = scaffold_inputs();
let left = generate_extraction_scaffold(&inputs).expect("scaffold");
let right = dry_run_extraction_scaffold(&inputs).expect("dry run");
assert_eq!(left, right);
assert!(extraction_scaffold_integrity_is_valid(&left));
assert!(validate_extraction_scaffold(&left).is_empty());
assert_eq!(left.effects, ExtractionScaffoldEffects::default());
assert!(left.linked_authority_remains_authoritative);
assert!(left.provider_compatibility_preserved);
assert_eq!(
left.preserved_identity.module_manifest,
serde_json::to_value(module()).unwrap()
);
assert_eq!(left.preserved_identity.operation_ids, ["getTicket"]);
assert_eq!(
left.preserved_identity.event_types,
["support.sla-updated.v1"]
);
assert!(left.patch.contains("src/bin/api.rs"));
assert!(left.patch.contains("src/bin/worker.rs"));
assert!(left.patch.contains("src/bin/migration.rs"));
}
#[test]
fn authoritative_contract_changes_are_rejected() {
let (mut inputs, _) = scaffold_inputs();
inputs.artifacts[0].contents.push_str("# changed\n");
let error = generate_extraction_scaffold(&inputs).expect_err("digest drift must fail");
assert_eq!(
error.code,
ExtractionScaffoldGenerationIssueCode::ArtifactDigestMismatch
);
}
#[test]
fn apply_is_idempotent_preserves_provider_and_refuses_user_changes() {
let (inputs, current) = scaffold_inputs();
let scaffold = generate_extraction_scaffold(&inputs).expect("scaffold");
let root = temp_root();
fs::create_dir_all(&root).unwrap();
let provider = root.join("lenso.service.json");
fs::write(&provider, "{\"protocol\":\"lenso.service.v1\"}\n").unwrap();
let applied = apply_extraction_scaffold(&root, &scaffold, &inputs.plan, ¤t)
.expect("first apply");
assert!(!applied.created_files.is_empty());
assert!(applied.effects.writes_repository_files);
assert_eq!(
fs::read_to_string(&provider).unwrap(),
"{\"protocol\":\"lenso.service.v1\"}\n"
);
let repeated = apply_extraction_scaffold(&root, &scaffold, &inputs.plan, ¤t)
.expect("repeated apply");
assert!(repeated.created_files.is_empty());
assert_eq!(repeated.unchanged_files.len(), scaffold.files.len());
assert!(!repeated.effects.writes_repository_files);
let changed = root.join(&scaffold.files[0].path);
fs::write(&changed, "user change\n").unwrap();
let error = apply_extraction_scaffold(&root, &scaffold, &inputs.plan, ¤t)
.expect_err("changed generated file must fail");
assert_eq!(
error.code,
ExtractionScaffoldApplyErrorCode::ScaffoldConflict
);
assert_eq!(error.conflicting_paths, [scaffold.files[0].path.clone()]);
fs::remove_dir_all(&root).unwrap();
}
#[test]
fn stale_plan_is_rejected_before_repository_writes() {
let (inputs, mut current) = scaffold_inputs();
let scaffold = generate_extraction_scaffold(&inputs).expect("scaffold");
current.expected_authority.revision = "support-r2".to_owned();
let root = temp_root();
fs::create_dir_all(&root).unwrap();
let error = apply_extraction_scaffold(&root, &scaffold, &inputs.plan, ¤t)
.expect_err("stale plan must fail");
assert_eq!(error.code, ExtractionScaffoldApplyErrorCode::PlanStale);
assert!(!root.join(&scaffold.destination_root).exists());
fs::remove_dir_all(&root).unwrap();
}
fn temp_root() -> PathBuf {
let sequence = TEMP_SEQUENCE.fetch_add(1, Ordering::Relaxed);
std::env::temp_dir().join(format!(
"lenso-extraction-scaffold-{}-{sequence}",
std::process::id()
))
}
}