Monitor websites uptime using Cloudflare Workers
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TypeScript
at main
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describe('Cloudflare Paid Tier Usage Adapter', () => { beforeEach(() => { clearCloudflareUsageCache(); });
const fixedDate = new Date('2026-10-05T12:00:00Z');
describe('unconfigured or missing credentials', () => { it('returns explicit unknown status and setup instructions when credentials are missing', async () => { const report = await getCloudflareUsageReport({ now: () => fixedDate, });
expect(report.status).toBe('unknown'); expect(report.isWithinAllowance).toBeNull(); expect(report.hasHardLimitViolation).toBeNull(); expect(report.totalEstimatedOverageCostUsd).toBeNull(); expect(report.forecastGuardExceeded).toBeNull(); expect(report.coverage).toContain('Account-level telemetry not configured'); expect(report.coverage).toContain('Tenant-level metrics cannot prove');
expect(report.setupNeeded).toBeDefined(); expect(report.setupNeeded?.configured).toBe(false); expect(report.setupNeeded?.missingVariables).toEqual([ 'CLOUDFLARE_ACCOUNT_ID', 'CLOUDFLARE_ANALYTICS_READ_TOKEN', ]); expect(report.setupNeeded?.requiredPermissions).toContain('Account Analytics: Read');
// Every metric must be marked unknown and unconfigured — NEVER fabricated zero! for (const metric of report.metrics) { expect(metric.status).toBe('unknown'); expect(metric.source).toBe('unconfigured'); expect(metric.used).toBeNull(); } });
it('identifies when only apiToken is missing', async () => { const report = await getCloudflareUsageReport({ accountId: 'test-account-123', now: () => fixedDate, });
expect(report.status).toBe('unknown'); expect(report.setupNeeded?.missingVariables).toEqual(['CLOUDFLARE_ANALYTICS_READ_TOKEN']); }); });
describe('GraphQL actual schema validation & aggregation', () => { it('aggregates multiple groups safely and leaves unsupported CPU sum as unknown', async () => { const mockFetch: typeof fetch = async (input, init) => { const bodyStr = typeof init?.body === 'string' ? init.body : '';
if (bodyStr) { const query = (JSON.parse(bodyStr) as { query: string }).query; expect(query).toContain('$accountTag: string!'); expect(query).not.toContain('String!'); if (query.includes('GetD1Usage')) expect(query).toContain('$startDate: Date!'); if (query.includes('GetWorkersInvocations')) expect(query).toContain('$startDatetime: string!'); if (query.includes('GetQueueUsage')) expect(query).toContain('$startDatetime: Time!'); }
if (bodyStr.includes('workersInvocationsAdaptive')) { // Actual schema: workersInvocationsAdaptive supports sum { requests } // Returning 2 groups to verify aggregation across groups return new Response( JSON.stringify({ data: { viewer: { accounts: [ { workersInvocationsAdaptive: [ { sum: { requests: 1_000_000 } }, { sum: { requests: 500_000 } }, ], }, ], }, }, }), { status: 200, headers: { 'Content-Type': 'application/json' } }, ); }
if (bodyStr.includes('d1AnalyticsAdaptiveGroups')) { // Actual schema: d1AnalyticsAdaptiveGroups supports sum { rowsRead rowsWritten } return new Response( JSON.stringify({ data: { viewer: { accounts: [ { d1AnalyticsAdaptiveGroups: [ { sum: { rowsRead: 300_000_000, rowsWritten: 1_000_000 } }, { sum: { rowsRead: 200_000_000, rowsWritten: 1_000_000 } }, ], }, ], }, }, }), { status: 200, headers: { 'Content-Type': 'application/json' } }, ); }
if (bodyStr.includes('queueMessageOperationsAdaptiveGroups')) { // Actual schema: billableOperations (not operations) return new Response( JSON.stringify({ data: { viewer: { accounts: [ { queueMessageOperationsAdaptiveGroups: [ { sum: { billableOperations: 80_000 } }, { sum: { billableOperations: 70_000 } }, ], }, ], }, }, }), { status: 200, headers: { 'Content-Type': 'application/json' } }, ); }
const url = String(input); if (url.includes('/d1/database')) { return new Response( JSON.stringify({ success: true, result: [{ file_size: 100_000_000 }], result_info: { total_count: 1, total_pages: 1 }, }), { status: 200, headers: { 'Content-Type': 'application/json' } }, ); }
if (url.includes('/workers/scripts')) { return new Response( JSON.stringify({ success: true, result: [{ id: 'script-1' }], }), { status: 200, headers: { 'Content-Type': 'application/json' } }, ); }
return new Response('Not found', { status: 404 }); };
const report = await getCloudflareUsageReport({ accountId: 'test-acc', apiToken: 'test-tok', fetchFn: mockFetch, now: () => fixedDate, });
// Workers Requests should be summed across all returned groups: 1.0M + 0.5M = 1.5M const reqMetric = report.metrics.find((m) => m.id === 'workers_requests'); expect(reqMetric?.used).toBe(1_500_000); expect(reqMetric?.status).toBe('within');
// Workers CPU sum is unsupported by GraphQL invocations sum; must be reported as unknown! const cpuMetric = report.metrics.find((m) => m.id === 'workers_cpu_ms'); expect(cpuMetric?.used).toBeNull(); expect(cpuMetric?.status).toBe('unknown');
// D1 Rows Read: 300M + 200M = 500M const rowsReadMetric = report.metrics.find((m) => m.id === 'd1_rows_read'); expect(rowsReadMetric?.used).toBe(500_000_000);
// D1 Rows Written: 1M + 1M = 2M const rowsWrittenMetric = report.metrics.find((m) => m.id === 'd1_rows_written'); expect(rowsWrittenMetric?.used).toBe(2_000_000);
// Queues billable operations: 80k + 70k = 150k const queueMetric = report.metrics.find((m) => m.id === 'queues_operations'); expect(queueMetric?.used).toBe(150_000);
// R2 metrics are unmeasured via account API -> must be unknown const r2Storage = report.metrics.find((m) => m.id === 'r2_storage'); expect(r2Storage?.used).toBeNull(); expect(r2Storage?.status).toBe('unknown');
// Because CPU, R2, etc. are unmeasured, overall status MUST NEVER be claimed as 'within'! expect(report.status).toBe('unknown'); expect(report.isWithinAllowance).toBeNull(); expect(report.hasHardLimitViolation).toBe(false); // All hard limits were checked (scripts, DB count, DB size) });
it('marks metric unknown when GraphQL results reach the query limit (truncation risk)', async () => { const mockFetch: typeof fetch = async (input, init) => { const bodyStr = typeof init?.body === 'string' ? init.body : ''; if (bodyStr.includes('workersInvocationsAdaptive')) { // Simulate 10,000 groups returned (query limit hit, truncation) const groups = new Array(10000).fill({ sum: { requests: 1 } }); return new Response( JSON.stringify({ data: { viewer: { accounts: [{ workersInvocationsAdaptive: groups }] } }, }), { status: 200, headers: { 'Content-Type': 'application/json' } }, ); } return new Response(JSON.stringify({ success: true, result: [] }), { status: 200, headers: { 'Content-Type': 'application/json' }, }); };
const report = await getCloudflareUsageReport({ accountId: 'test-acc', apiToken: 'test-tok', fetchFn: mockFetch, now: () => fixedDate, });
const reqMetric = report.metrics.find((m) => m.id === 'workers_requests'); expect(reqMetric?.status).toBe('unknown'); expect(reqMetric?.used).toBeNull(); }); });
describe('independent query resilience', () => { it('preserves workers and D1 metrics even if queues query fails or errors', async () => { const mockFetch: typeof fetch = async (input, init) => { const bodyStr = typeof init?.body === 'string' ? init.body : '';
if (bodyStr.includes('workersInvocationsAdaptive')) { return new Response( JSON.stringify({ data: { viewer: { accounts: [{ workersInvocationsAdaptive: [{ sum: { requests: 2_000_000 } }] }], }, }, }), { status: 200, headers: { 'Content-Type': 'application/json' } }, ); }
if (bodyStr.includes('d1AnalyticsAdaptiveGroups')) { return new Response( JSON.stringify({ data: { viewer: { accounts: [ { d1AnalyticsAdaptiveGroups: [ { sum: { rowsRead: 10_000_000, rowsWritten: 500_000 } }, ], }, ], }, }, }), { status: 200, headers: { 'Content-Type': 'application/json' } }, ); }
if (bodyStr.includes('queueMessageOperationsAdaptiveGroups')) { // Queues query fails (e.g. 500 or GraphQL error because queues not enabled) return new Response( JSON.stringify({ errors: [{ message: 'Queue dataset not enabled on account' }], }), { status: 400, headers: { 'Content-Type': 'application/json' } }, ); }
const url = String(input); if (url.includes('/d1/database')) { return new Response( JSON.stringify({ success: true, result: [{ file_size: 50_000_000 }], result_info: { total_count: 1, total_pages: 1 }, }), { status: 200, headers: { 'Content-Type': 'application/json' } }, ); }
if (url.includes('/workers/scripts')) { return new Response( JSON.stringify({ success: true, result: [{ id: 's1' }], }), { status: 200, headers: { 'Content-Type': 'application/json' } }, ); }
return new Response('Not found', { status: 404 }); };
const report = await getCloudflareUsageReport({ accountId: 'test-acc', apiToken: 'test-tok', fetchFn: mockFetch, now: () => fixedDate, });
// Workers requests and D1 succeeded expect(report.metrics.find((m) => m.id === 'workers_requests')?.used).toBe(2_000_000); expect(report.metrics.find((m) => m.id === 'd1_rows_read')?.used).toBe(10_000_000);
// Queue metric is marked unknown due to query failure, but didn't crash other metrics expect(report.metrics.find((m) => m.id === 'queues_operations')?.status).toBe('unknown'); expect(report.metrics.find((m) => m.id === 'queues_operations')?.used).toBeNull(); }); });
describe('D1 REST pagination and storage validation', () => { it('paginates over multiple pages and aggregates database count and storage accurately', async () => { const mockFetch: typeof fetch = async (input) => { const url = String(input);
if (url.includes('/d1/database?page=1')) { return new Response( JSON.stringify({ success: true, result: [ { uuid: 'db-1', name: 'db1', file_size: 500_000_000 }, { uuid: 'db-2', name: 'db2', file_size: 300_000_000 }, ], result_info: { page: 1, per_page: 2, total_count: 3, total_pages: 2 }, }), { status: 200, headers: { 'Content-Type': 'application/json' } }, ); }
if (url.includes('/d1/database?page=2')) { return new Response( JSON.stringify({ success: true, result: [{ uuid: 'db-3', name: 'db3', file_size: 200_000_000 }], result_info: { page: 2, per_page: 2, total_count: 3, total_pages: 2 }, }), { status: 200, headers: { 'Content-Type': 'application/json' } }, ); }
if (url.includes('/workers/scripts')) { return new Response(JSON.stringify({ success: true, result: [{ id: 's1' }] }), { status: 200, headers: { 'Content-Type': 'application/json' }, }); }
return new Response(JSON.stringify({ data: { viewer: { accounts: [] } } }), { status: 200, headers: { 'Content-Type': 'application/json' }, }); };
const report = await getCloudflareUsageReport({ accountId: 'test-acc', apiToken: 'test-tok', fetchFn: mockFetch, now: () => fixedDate, });
// Total count across pages: 3 const countMetric = report.metrics.find((m) => m.id === 'd1_databases_count'); expect(countMetric?.used).toBe(3); expect(countMetric?.status).toBe('within');
// Total storage: 500M + 300M + 200M = 1,000,000,000 bytes (1 GB) const storageMetric = report.metrics.find((m) => m.id === 'd1_storage'); expect(storageMetric?.used).toBe(1_000_000_000); expect(storageMetric?.status).toBe('within'); // Instant point-in-time storage should NOT calculate overage bill expect(storageMetric?.estimatedOverageCostUsd).toBeNull(); });
it('marks storage unknown if any database is missing file_size metadata', async () => { const mockFetch: typeof fetch = async (input) => { const url = String(input); if (url.includes('/d1/database')) { return new Response( JSON.stringify({ success: true, result: [ { uuid: 'db-1', file_size: 100_000_000 }, { uuid: 'db-2' }, // file_size missing ], result_info: { page: 1, per_page: 100, total_count: 2, total_pages: 1 }, }), { status: 200, headers: { 'Content-Type': 'application/json' } }, ); } return new Response(JSON.stringify({ success: true, result: [] }), { status: 200, headers: { 'Content-Type': 'application/json' }, }); };
const report = await getCloudflareUsageReport({ accountId: 'test-acc', apiToken: 'test-tok', fetchFn: mockFetch, now: () => fixedDate, });
const countMetric = report.metrics.find((m) => m.id === 'd1_databases_count'); expect(countMetric?.used).toBe(2); expect(report.hasHardLimitViolation).toBeNull();
const storageMetric = report.metrics.find((m) => m.id === 'd1_storage'); expect(storageMetric?.used).toBeNull(); expect(storageMetric?.status).toBe('unknown'); });
it('marks storage unknown when pagination exceeds bounded MAX_PAGES cap', async () => { const mockFetch: typeof fetch = async (input) => { const url = String(input); if (url.includes('/d1/database')) { // Claim there are 25 pages (exceeds MAX_PAGES of 20) return new Response( JSON.stringify({ success: true, result: [{ uuid: 'db-x', file_size: 10_000_000 }], result_info: { page: 1, per_page: 1, total_count: 25, total_pages: 25 }, }), { status: 200, headers: { 'Content-Type': 'application/json' } }, ); } return new Response(JSON.stringify({ success: true, result: [] }), { status: 200, headers: { 'Content-Type': 'application/json' }, }); };
const report = await getCloudflareUsageReport({ accountId: 'test-acc', apiToken: 'test-tok', fetchFn: mockFetch, now: () => fixedDate, });
// Total count known from result_info expect(report.metrics.find((m) => m.id === 'd1_databases_count')?.used).toBe(25); // Storage incomplete because pagination was capped expect(report.hasHardLimitViolation).toBeNull(); expect(report.metrics.find((m) => m.id === 'd1_storage')?.used).toBeNull(); expect(report.metrics.find((m) => m.id === 'd1_storage')?.status).toBe('unknown'); });
it('marks D1 metrics unknown when REST returns 401 or errors (NEVER defaults to 0)', async () => { const mockFetch: typeof fetch = async (input) => { const url = String(input); if (url.includes('/d1/database')) { return new Response('Unauthorized', { status: 401 }); } return new Response(JSON.stringify({ success: true, result: [] }), { status: 200, headers: { 'Content-Type': 'application/json' }, }); };
const report = await getCloudflareUsageReport({ accountId: 'test-acc', apiToken: 'test-tok', fetchFn: mockFetch, now: () => fixedDate, });
const countMetric = report.metrics.find((m) => m.id === 'd1_databases_count'); expect(countMetric?.used).toBeNull(); expect(countMetric?.status).toBe('unknown');
const storageMetric = report.metrics.find((m) => m.id === 'd1_storage'); expect(storageMetric?.used).toBeNull(); expect(storageMetric?.status).toBe('unknown'); });
it('detects individual database exceeding 10 GB hard limit', async () => { const mockFetch: typeof fetch = async (input) => { const url = String(input); if (url.includes('/d1/database')) { return new Response( JSON.stringify({ success: true, result: [{ uuid: 'huge-db', file_size: 11_000_000_000 }, { uuid: 'unmeasured' }], result_info: { total_count: 2, total_pages: 1 }, }), { status: 200, headers: { 'Content-Type': 'application/json' } }, ); } return new Response(JSON.stringify({ success: true, result: [] }), { status: 200, headers: { 'Content-Type': 'application/json' }, }); };
const report = await getCloudflareUsageReport({ accountId: 'test-acc', apiToken: 'test-tok', fetchFn: mockFetch, now: () => fixedDate, });
expect(report.hasHardLimitViolation).toBe(true); expect(OFFICIAL_CLOUDFLARE_LIMITS.queues.operationChunkSizeBytes).toBe(64_000); expect(report.status).toBe('exceeded'); expect(report.exceededHardLimits).toContain('D1 Database Max Size (10 GB)'); }); });
describe('Workers REST validation', () => { it('detects when script count exceeds 500 hard limit', async () => { const mockFetch: typeof fetch = async (input) => { const url = String(input); if (url.includes('/workers/scripts')) { const scripts = new Array(501).fill(0).map((_, i) => ({ id: `script-${i}` })); return new Response(JSON.stringify({ success: true, result: scripts }), { status: 200, headers: { 'Content-Type': 'application/json' }, }); } return new Response(JSON.stringify({ success: true, result: [] }), { status: 200, headers: { 'Content-Type': 'application/json' }, }); };
const report = await getCloudflareUsageReport({ accountId: 'test-acc', apiToken: 'test-tok', fetchFn: mockFetch, now: () => fixedDate, });
const scriptMetric = report.metrics.find((m) => m.id === 'workers_script_count'); expect(scriptMetric?.used).toBe(501); expect(scriptMetric?.status).toBe('exceeded'); expect(report.hasHardLimitViolation).toBe(true); expect(report.status).toBe('exceeded'); expect(report.exceededHardLimits).toContain('Workers Script Count'); });
it('marks script count unknown when REST endpoint returns 403 (does NOT default to 0)', async () => { const mockFetch: typeof fetch = async (input) => { const url = String(input); if (url.includes('/workers/scripts')) { return new Response('Forbidden', { status: 403 }); } return new Response(JSON.stringify({ success: true, result: [] }), { status: 200, headers: { 'Content-Type': 'application/json' }, }); };
const report = await getCloudflareUsageReport({ accountId: 'test-acc', apiToken: 'test-tok', fetchFn: mockFetch, now: () => fixedDate, });
const scriptMetric = report.metrics.find((m) => m.id === 'workers_script_count'); expect(scriptMetric?.used).toBeNull(); expect(scriptMetric?.status).toBe('unknown'); }); });
describe('billed allowance overage vs hard limit vs internal forecast guard', () => { it('reports allowance overage and calculates cost without conflating with internal $20 guard', async () => { const mockFetch: typeof fetch = async (input, init) => { const bodyStr = typeof init?.body === 'string' ? init.body : ''; if (bodyStr.includes('workersInvocationsAdaptive')) { // 15M requests (5M over 10M allowance) -> 5 * $0.30 = $1.50 overage return new Response( JSON.stringify({ data: { viewer: { accounts: [{ workersInvocationsAdaptive: [{ sum: { requests: 15_000_000 } }] }], }, }, }), { status: 200, headers: { 'Content-Type': 'application/json' } }, ); } return new Response(JSON.stringify({ success: true, result: [] }), { status: 200, headers: { 'Content-Type': 'application/json' }, }); };
const report = await getCloudflareUsageReport({ accountId: 'test-acc', apiToken: 'test-tok', fetchFn: mockFetch, now: () => fixedDate, });
const reqMetric = report.metrics.find((m) => m.id === 'workers_requests'); expect(reqMetric?.status).toBe('exceeded'); expect(reqMetric?.estimatedOverageCostUsd).toBe(1.5);
expect(report.isWithinAllowance).toBe(false); expect(report.exceededIncludedUsages).toEqual(['Workers Requests']); expect(report.status).toBe('warning');
// The internal $20 guard is the hosted D1 forecast; it must NOT be triggered by account overages expect(report.forecastGuardExceeded).toBeNull(); });
it('evaluates forecastGuardExceeded only when caller provides actual hosted forecast', async () => { const mockFetch: typeof fetch = async () => new Response(JSON.stringify({ success: true, result: [] }), { status: 200, headers: { 'Content-Type': 'application/json' }, });
const reportSafe = await getCloudflareUsageReport({ accountId: 'test-acc', apiToken: 'test-tok', fetchFn: mockFetch, now: () => fixedDate, hostedForecastUsd: 12.5, forecastGuardUsd: 20.0, }); expect(reportSafe.forecastGuardExceeded).toBe(false);
clearCloudflareUsageCache();
const reportBreached = await getCloudflareUsageReport({ accountId: 'test-acc', apiToken: 'test-tok', fetchFn: mockFetch, now: () => fixedDate, hostedForecastUsd: 22.0, forecastGuardUsd: 20.0, }); expect(reportBreached.forecastGuardExceeded).toBe(true); }); });
describe('reporting period vs billing period & cache boundary', () => { it('labels reporting period as UTC calendar window and does not claim full billing compliance', async () => { const mockFetch: typeof fetch = async () => new Response(JSON.stringify({ success: true, result: [] }), { status: 200, headers: { 'Content-Type': 'application/json' }, });
const report = await getCloudflareUsageReport({ accountId: 'test-acc', apiToken: 'test-tok', fetchFn: mockFetch, now: () => fixedDate, });
expect(report.coverage).toContain('Reporting period: 2026-10-01 to 2026-10-05'); expect(report.coverage).toContain('not verified account billing invoice cycle'); expect(report.isWithinAllowance).toBeNull(); });
it('isolates cache by credentials and does not reuse cache across month boundary', async () => { let callCount = 0; const mockFetch: typeof fetch = async () => { callCount++; return new Response(JSON.stringify({ success: true, result: [] }), { status: 200, headers: { 'Content-Type': 'application/json' }, }); };
// 1. Initial call at 2026-10-31 23:59:00 UTC (1 minute before month end) const oct31 = new Date('2026-10-31T23:59:00Z'); await getCloudflareUsageReport({ accountId: 'test-acc', apiToken: 'token-A', fetchFn: mockFetch, now: () => oct31, ttlMs: 300_000, // 5 min TTL }); const callsAfterOct = callCount; expect(callsAfterOct).toBeGreaterThan(0);
// 2. Immediate call within October with same credentials should hit cache await getCloudflareUsageReport({ accountId: 'test-acc', apiToken: 'token-A', fetchFn: mockFetch, now: () => new Date('2026-10-31T23:59:30Z'), ttlMs: 300_000, }); expect(callCount).toBe(callsAfterOct); // No new fetch
// 3. Call 2 minutes later across month boundary (2026-11-01 00:01:00 UTC) // Must NOT reuse October cache! const nov01 = new Date('2026-11-01T00:01:00Z'); await getCloudflareUsageReport({ accountId: 'test-acc', apiToken: 'token-A', fetchFn: mockFetch, now: () => nov01, ttlMs: 300_000, }); expect(callCount).toBeGreaterThan(callsAfterOct); // New fetch made
// 4. Token rotation should bypass cache const callsAfterNov = callCount; await getCloudflareUsageReport({ accountId: 'test-acc', apiToken: 'token-B-rotated', fetchFn: mockFetch, now: () => nov01, ttlMs: 300_000, }); expect(callCount).toBeGreaterThan(callsAfterNov); }); });
describe('error sanitization and robust input validation', () => { it('sanitizes bearer tokens, api keys, and email addresses from error messages', () => { const leakedError = new Error( 'Upstream failure: Bearer cf_sec_abc123456789xyz on api_token=cf_sec_9999 for user admin@example.com', ); const sanitized = sanitizeErrorMessage(leakedError);
expect(sanitized).not.toContain('cf_sec_abc123456789xyz'); expect(sanitized).not.toContain('cf_sec_9999'); expect(sanitized).not.toContain('admin@example.com'); expect(sanitized).toContain('Bearer [REDACTED]'); expect(sanitized).toContain('api_token=[REDACTED]'); expect(sanitized).toContain('[REDACTED_EMAIL]'); });
it('treats negative or NaN usage numbers as invalid/unknown', async () => { const mockFetch: typeof fetch = async (input, init) => { const bodyStr = typeof init?.body === 'string' ? init.body : ''; if (bodyStr.includes('workersInvocationsAdaptive')) { return new Response( JSON.stringify({ data: { viewer: { accounts: [{ workersInvocationsAdaptive: [{ sum: { requests: -500 } }] }], }, }, }), { status: 200, headers: { 'Content-Type': 'application/json' } }, ); } return new Response(JSON.stringify({ success: true, result: [] }), { status: 200, headers: { 'Content-Type': 'application/json' }, }); };
const report = await getCloudflareUsageReport({ accountId: 'test-acc', apiToken: 'test-tok', fetchFn: mockFetch, now: () => fixedDate, });
const reqMetric = report.metrics.find((m) => m.id === 'workers_requests'); expect(reqMetric?.status).toBe('unknown'); expect(reqMetric?.used).toBeNull(); }); });});