Files
fusion/scripts/cache-stats.mjs
Fusion 8722d0bc2c fix(FN-4388): tighten cache-stats ephemeral filtering and tests
Fusion-Task-Id: FN-4388
Fusion-Task-Lineage: 7497a0a1-5edb-4778-b339-118d1fd668f7
2026-05-13 22:41:30 -07:00

85 lines
3.1 KiB
JavaScript

#!/usr/bin/env node
function createSummary() {
return { total_input: 0, total_cached: 0, total_cache_write: 0, total_output: 0, n_tasks: 0, hit_ratio: 0 };
}
function applyUsage(summary, usage) {
summary.total_input += usage.inputTokens ?? 0;
summary.total_cached += usage.cachedTokens ?? 0;
summary.total_cache_write += usage.cacheWriteTokens ?? 0;
summary.total_output += usage.outputTokens ?? 0;
summary.n_tasks += 1;
}
function finalizeSummary(summary) {
const denominator = summary.total_input + summary.total_cached;
return { ...summary, hit_ratio: denominator > 0 ? summary.total_cached / denominator : 0 };
}
function printTable(title, rows) {
console.log(`\n${title}`);
console.table(rows);
}
export async function collectCacheStats({ taskStore, agentStore, isEphemeralAgent = () => false }) {
const tasks = await taskStore.listTasks({ includeArchived: true, slim: true });
const agents = await agentStore.listAgents({ includeEphemeral: true });
const agentById = new Map(agents.map((agent) => [agent.id, agent]));
const roleSummaries = new Map();
const agentSummaries = new Map();
for (const task of tasks) {
if (!task.tokenUsage) continue;
const ownerId = task.assignedAgentId ?? task.sourceAgentId ?? task.checkedOutBy;
const owner = ownerId ? agentById.get(ownerId) : undefined;
const role = owner?.role ?? "unknown";
if (!roleSummaries.has(role)) roleSummaries.set(role, createSummary());
applyUsage(roleSummaries.get(role), task.tokenUsage);
if (owner && !isEphemeralAgent(owner)) {
if (!agentSummaries.has(owner.id)) agentSummaries.set(owner.id, { id: owner.id, role: owner.role, ...createSummary() });
applyUsage(agentSummaries.get(owner.id), task.tokenUsage);
}
}
const byRole = Array.from(roleSummaries.entries()).map(([role, summary]) => ({ role, ...finalizeSummary(summary) }));
const byAgent = Array.from(agentSummaries.values()).map((summary) => ({ ...summary, ...finalizeSummary(summary) }));
return { byRole, byAgent };
}
export async function main(argv = process.argv.slice(2), deps = {}) {
const asJson = argv.includes("--json");
const projectDir = process.cwd();
const { taskStore, agentStore, isEphemeralAgent } = deps.stores ?? (await (async () => {
const { TaskStore, AgentStore, isEphemeralAgent } = await import("../packages/core/dist/index.js");
const store = new TaskStore(projectDir);
await store.init();
const aStore = new AgentStore({ rootDir: store.getFusionDir() });
await aStore.init();
return { taskStore: store, agentStore: aStore, isEphemeralAgent };
})());
const result = await collectCacheStats({ taskStore, agentStore, isEphemeralAgent });
if (asJson) {
console.log(JSON.stringify(result, null, 2));
return 0;
}
printTable("Cache stats by role", result.byRole);
printTable("Cache stats by permanent agent", result.byAgent);
return 0;
}
if (import.meta.url === `file://${process.argv[1]}`) {
main().then((code) => {
process.exitCode = code;
}).catch((error) => {
console.error(error instanceof Error ? error.message : String(error));
process.exitCode = 1;
});
}