use std::sync::Arc;
use async_trait::async_trait;
use serde_json::json;
use crate::application::orchestration::runtime_job_payloads::MemoryGraphJobPayload;
use crate::application::runtime::in_memory_runtime::{JobExecutionOutcome, JobHandler};
use crate::application::runtime::memory_job_request_helpers::memory_scope_from_fields;
use crate::application::runtime::memory_operation_job_outcome_helpers::{
operation_failure, operation_success, policy_violation_failure,
};
use crate::application::runtime::memory_recall_request_builder::memory_filter_from_payload;
use crate::domain::errors::Result;
use crate::domain::runtime::job::Job;
use crate::ports::outbound::memory::memory_context_reader::MemoryContextReader;
use crate::ports::outbound::memory::memory_models::MemoryGraphRequest;
pub struct MemoryGraphJobHandler {
reader: Arc<dyn MemoryContextReader>,
}
impl MemoryGraphJobHandler {
pub fn new(reader: Arc<dyn MemoryContextReader>) -> Self {
Self { reader }
}
fn parse_payload(raw: &str) -> std::result::Result<MemoryGraphJobPayload, String> {
serde_json::from_str(raw)
.map_err(|err| format!("policy violation: invalid memory-graph payload json: {err}"))
}
}
#[async_trait]
impl JobHandler for MemoryGraphJobHandler {
fn job_type(&self) -> &'static str {
"workflow.stasis.memory.graph"
}
async fn execute(&self, job: &Job) -> Result<JobExecutionOutcome> {
let payload = match Self::parse_payload(&job.payload_ref) {
Ok(payload) => payload,
Err(message) => return Ok(policy_violation_failure("stasis-memory-graph", message)),
};
let request = MemoryGraphRequest {
scope: memory_scope_from_fields(
payload.tenant_id,
payload.session_ids,
payload.tiers,
payload.from_utc,
payload.to_utc,
),
filter: memory_filter_from_payload(&payload.filter),
include_lineage: payload.include_lineage.unwrap_or(true),
include_semantic: payload.include_semantic.unwrap_or(true),
include_session_topology: payload.include_session_topology.unwrap_or(true),
rel: payload.rel,
target_prefix: payload.target_prefix,
limit: payload.limit.unwrap_or(200),
};
match self.reader.graph(&request).await {
Ok(result) => Ok(operation_success(
"stasis-memory-graph",
"memory-graph",
&job.id,
json!({
"retrieved": result.retrieved,
"sessions": result.sessions,
"nodes": result.nodes,
"edges": result.edges,
}),
)),
Err(err) => Ok(operation_failure("stasis-memory-graph", err.to_string())),
}
}
}