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electric-cherry/tests/unit/host-observation-retention.test.ts
T

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TypeScript

import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
import { newFixture, type Fixture } from '../helpers/fixture.js';
const now = Date.parse('2026-10-05T16:00:00Z');
const day = 86_400_000;
const at = (age: number) => new Date(now - age).toISOString();
const inventory = { protocolVersion: 1, dockerRunning: true, directoriesWritable: true,
storageAvailable: 100 * 1024 ** 3, runtimeImages: ['plutainer:test'], libraries: [{ id: 'library', state: 'ready' }] };
let fixture: Fixture;
beforeEach(async () => {
vi.resetModules(); fixture = await newFixture([]);
vi.useFakeTimers({ toFake: ['Date'] }); vi.setSystemTime(now);
});
afterEach(async () => { vi.useRealTimers(); vi.restoreAllMocks(); await fixture.cleanup(); });
async function setup() {
const hosts = await import('../../src/lib/server/hosts/index.js');
const { db, closeDb } = await import('../../src/lib/server/db/index.js');
const { fleetSettings, saveFleetSettings } = await import('../../src/lib/server/settings.js');
const host = hosts.createHost({ name: 'Retention host' });
const credentials = hosts.enrollHost(hosts.createEnrollment(host.id).token, inventory);
const handle = db();
function add(kind: string, options: { state?: string; payload?: Record<string, unknown>; result?: unknown;
error?: string; age?: number; serialized?: boolean; routing?: Record<string, unknown> } = {}) {
const payload = options.payload ?? {};
const operation = options.serialized
? hosts.queueHostOperationSerialized(host.id, kind, Buffer.from(JSON.stringify(payload)), {}, options.routing ?? {})
: hosts.queueHostOperation(host.id, kind, payload);
const state = options.state ?? 'completed';
if (state !== 'pending') hosts.reportHostOperationStatus(host.id, operation.id, {
state, result: options.result === undefined ? { ok: true } : options.result, error: options.error
});
handle.prepare('UPDATE ec_host_operations SET created_at=?,updated_at=? WHERE id=?')
.run(at(10 * day), at(options.age ?? 2 * day), operation.id);
return operation.id;
}
return { ...hosts, handle, db, closeDb, host, credentials, fleetSettings, saveFleetSettings, add };
}
describe('routine host observation retention', () => {
it('removes aged successful reads, manifests, and read-only RCON while retaining failures, actions, and recent evidence', async () => {
const api = await setup();
const removed = ['host.inspect', 'instance.inspect', 'files.read', 'files.stat', 'files.list', 'files.manifest', 'logs.read']
.map(kind => api.add(kind));
removed.push(...['status', 'getstatus', 'version'].map(command => api.add('rcon.execute', { payload: { command } })));
const retained = [
...['pending', 'accepted', 'running', 'failed', 'unknown'].map(state => api.add('files.read', { state })),
...['instance.restart', 'instance.stop', 'instance.remove', 'files.stage', 'files.activate', 'files.rollback', 'runtime.pull', 'unknown.read']
.map(kind => api.add(kind)),
api.add('rcon.execute', { payload: { command: 'map_restart' } }),
api.add('rcon.execute', { payload: { command: 'status; map_restart' } }),
api.add('rcon.execute', { payload: { command: 'status' }, result: { ok: false, reason: 'timeout' } }),
api.add('instance.inspect', { result: { healthy: false, state: 'stopped' } }),
api.add('files.read', { error: 'Read failed' }),
api.add('files.read', { result: { error: 'Read failed' } }),
api.add('files.stat', { age: day }),
api.add('files.read', { age: day - 1 })
];
expect(api.pruneHostObservations()).toBe(removed.length);
const ids = (api.handle.prepare('SELECT id FROM ec_host_operations').all() as { id: string }[]).map(row => row.id);
expect(ids.sort()).toEqual(retained.sort());
expect(api.pruneHostObservations()).toBe(0);
});
it('keeps per-server failures in routine completed batches and prunes them on schedule', async () => {
const api = await setup();
const results = [{ instanceId: 'one', generation: 1, reply: { ok: false, reason: 'timeout', text: '' } }];
const batches = [false, true].map(ok => api.add('rcon.status-batch', { result: { ok, results } }));
const failed = api.add('rcon.status-batch', { state: 'failed', error: 'Batch failed' });
const malformed = api.add('rcon.status-batch', { result: { ok: false } });
expect(api.listHostOperationHistory(1, 'important').operations.map(op => op.id).sort()).toEqual([failed, malformed].sort());
for (const id of batches) expect(api.getHostOperation(id)?.result).toMatchObject({ results });
expect(api.pruneHostObservations()).toBe(2);
for (const id of batches) expect(api.getHostOperationStatus(id)).toBeNull();
});
it('reclassifies existing completed batches once without hiding operation errors', async () => {
const api = await setup();
const result = { ok: false, results: [{ instanceId: 'one', generation: 1, reply: { ok: false, reason: 'timeout' } }] };
const batch = api.add('rcon.status-batch', { result });
const retained = [api.add('rcon.status-batch', { result, error: 'Incomplete' }),
api.add('rcon.status-batch', { result, state: 'failed' }),
api.add('rcon.status-batch', { result: { ...result, error: 'Incomplete' } })];
api.handle.exec("UPDATE ec_host_operations SET observation_success=0; DELETE FROM ec_host_schema_migrations WHERE name='completed-status-batches'");
api.closeDb();
expect(api.listHostOperationHistory(1, 'important').operations.map(op => op.id).sort()).toEqual(retained.sort());
expect(api.getHostOperation(batch)?.result).toEqual(result);
expect(api.pruneHostObservations()).toBe(1);
// The migration is not a recurring scan or reclassification of retained evidence.
api.db().prepare("UPDATE ec_host_operations SET state='completed',error=NULL,result=? WHERE id=?").run(JSON.stringify(result), retained[0]);
api.closeDb();
expect(api.pruneHostObservations()).toBe(0);
});
it('classifies full serialized RCON payloads and deletes their events and immutable bytes together', async () => {
const api = await setup();
const read = api.add('rcon.execute', { serialized: true, payload: { command: 'status' }, routing: { command: 'map_restart' } });
const action = api.add('rcon.execute', { serialized: true, payload: { command: 'map_restart' }, routing: { command: 'status' } });
expect(api.handle.prepare('SELECT COUNT(*) AS count FROM ec_host_operation_payloads').get()).toEqual({ count: 2 });
expect(api.pruneHostObservations()).toBe(1);
expect(api.getHostOperationStatus(read)).toBeNull();
expect(api.getHostOperation(action)?.payload).toEqual({ command: 'map_restart' });
expect(api.handle.prepare('SELECT DISTINCT operation_id FROM ec_host_operation_events').all()).toEqual([{ operation_id: action }]);
expect(api.handle.prepare('SELECT operation_id FROM ec_host_operation_payloads').all()).toEqual([{ operation_id: action }]);
expect(api.handle.pragma('foreign_key_check')).toEqual([]);
});
it('honors disabled retention and changes to the saved period using the last receipt time', async () => {
const api = await setup();
const old = api.add('files.read', { age: 4 * day });
const recentReceipt = api.add('files.read', { age: 2 * day });
api.saveFleetSettings({ ...api.fleetSettings(), observationKeepDays: 0 });
expect(api.pruneHostObservations()).toBe(0);
api.saveFleetSettings({ ...api.fleetSettings(), observationKeepDays: 3 });
expect(api.pruneHostObservations()).toBe(1);
expect(api.getHostOperationStatus(old)).toBeNull();
expect(api.getHostOperationStatus(recentReceipt)).not.toBeNull();
api.saveFleetSettings({ ...api.fleetSettings(), observationKeepDays: 1 });
expect(api.pruneHostObservations()).toBe(1);
});
it('bounds each cleanup batch and seeks through the retention index despite extensive retained action history', async () => {
const api = await setup();
api.handle.transaction(() => {
const insert = api.handle.prepare(`INSERT INTO ec_host_operations
(id,host_id,kind,payload,state,created_at,updated_at,observation_success)
VALUES(?,?,?,'{}','completed',?,?,?)`);
for (let index = 0; index < 2000; index++) insert.run(`action-${index}`, api.host.id, 'instance.restart', at(10 * day), at(10 * day), 0);
for (let index = 0; index < 503; index++) insert.run(`read-${index}`, api.host.id, 'files.read', at(2 * day), at(2 * day), 1);
})();
const prepare = vi.spyOn(api.handle, 'prepare');
expect(api.pruneHostObservations()).toBe(500);
const query = prepare.mock.calls.map(([sql]) => sql).find(sql => sql.includes('SELECT id FROM ec_host_operations WHERE observation_success'))!;
prepare.mockRestore();
const plan = api.handle.prepare(`EXPLAIN QUERY PLAN ${query}`).all(at(day)) as { detail: string }[];
expect(plan.some(row => row.detail.includes('USING INDEX ec_host_operations_observation_retention'))).toBe(true);
expect(plan.some(row => row.detail.includes('TEMP B-TREE'))).toBe(false);
expect(api.pruneHostObservations()).toBe(3);
expect(api.pruneHostObservations()).toBe(0);
expect(api.handle.prepare("SELECT COUNT(*) AS count FROM ec_host_operations WHERE kind='instance.restart'").get()).toEqual({ count: 2000 });
});
it('reuses the same three delete statements across different batch sizes', async () => {
const api = await setup();
const statements = new Map<string, ReturnType<typeof api.handle.prepare>>();
for (const count of [1, 2, 7, 50, 500]) {
api.handle.transaction(() => {
const insert = api.handle.prepare(`INSERT INTO ec_host_operations
(id,host_id,kind,payload,state,created_at,updated_at,observation_success)
VALUES(?,?,'files.stat','{}','completed',?,?,1)`);
for (let i = 0; i < count; i++) insert.run(`read-${count}-${i}`, api.host.id, at(2 * day), at(2 * day));
})();
const prepare = vi.spyOn(api.handle, 'prepare');
expect(api.pruneHostObservations()).toBe(count);
const deletes = prepare.mock.calls.map(([sql]) => sql).filter(sql => sql.startsWith('DELETE FROM ec_host_'));
prepare.mockRestore();
expect(deletes).toHaveLength(3);
for (const sql of deletes) {
const statement = api.handle.prepare(sql);
if (statements.has(sql)) expect(statement).toBe(statements.get(sql));
statements.set(sql, statement);
}
}
expect(statements.size).toBe(3);
expect(api.handle.pragma('foreign_key_check')).toEqual([]);
});
it('backfills legacy observation classification once while preserving actions and negative or invalid results', async () => {
const api = await setup();
const read = api.add('files.manifest');
const serializedRead = api.add('rcon.execute', { serialized: true, payload: { command: 'status' } });
const retained = [api.add('instance.restart'), api.add('rcon.execute', { payload: { command: 'map_restart' } }),
api.add('instance.inspect', { result: { healthy: false } }), api.add('files.read', { result: { ok: false } }),
api.add('files.read', { error: 'Unavailable' }), api.add('files.read', { result: { error: 'Unavailable' } }),
api.add('files.stat', { state: 'unknown' })];
const malformed = api.add('files.read');
api.handle.prepare('UPDATE ec_host_operations SET result=? WHERE id=?').run('{not-json', malformed);
retained.push(malformed);
api.handle.exec('DROP INDEX ec_host_operations_observation_retention');
api.handle.exec('DROP INDEX ec_host_operations_important_history');
api.handle.exec(`DROP TRIGGER operation_history_count_insert; DROP TRIGGER operation_history_count_delete;
DROP TRIGGER operation_history_count_update; DROP TABLE ec_host_operation_history_counts;
DELETE FROM ec_host_schema_migrations WHERE name='history-counts-v1'`);
api.handle.exec('ALTER TABLE ec_host_operations DROP COLUMN observation_success');
api.closeDb();
expect(api.pruneHostObservations()).toBe(2);
expect(api.getHostOperationStatus(read)).toBeNull();
expect(api.getHostOperationStatus(serializedRead)).toBeNull();
const handle = api.db();
expect((handle.prepare('SELECT id FROM ec_host_operations').all() as { id: string }[]).map(row => row.id).sort()).toEqual(retained.sort());
// Subsequent boots honor the recorded classification instead of repeatedly
// deriving it from historical rows that were deliberately preserved.
handle.prepare("UPDATE ec_host_operations SET result='{}' WHERE id=?").run(malformed);
api.closeDb();
expect(api.pruneHostObservations()).toBe(0);
expect(api.getHostOperationStatus(malformed)).not.toBeNull();
});
it('returns the current shared retention setting to an agent on every heartbeat', async () => {
const api = await setup();
const { POST } = await import('../../src/routes/api/agent/heartbeat/+server.js');
for (const observationKeepDays of [7, 0]) {
api.saveFleetSettings({ ...api.fleetSettings(), observationKeepDays });
const response = await POST({ request: new Request('https://ec.test/api/agent/heartbeat', {
method: 'POST', headers: { authorization: `Bearer ${api.credentials.credential}`, 'Content-Type': 'application/json' },
body: JSON.stringify({ inventory })
}) });
expect(response.status).toBe(200);
expect(await response.json()).toMatchObject({ observationKeepDays, heartbeatSeconds: 15 });
}
});
});