1
function shouldChaos() {
2
  return Math.random() < 0.13; // 13% chaos for R2
3
}
4
 
5
function getChaoticR2Response() {
6
  const chaos = Math.random();
7
  if (chaos < 0.2) {
8
    // Access denied
9
    return new Response(
10
      '<?xml version="1.0" encoding="UTF-8"?><Error><Code>AccessDenied</Code><Message>Access Denied</Message></Error>',
11
      { status: 403, headers: { 'Content-Type': 'application/xml' } }
12
    );
13
  } else if (chaos < 0.4) {
14
    // Object not found
15
    return new Response(
16
      '<?xml version="1.0" encoding="UTF-8"?><Error><Code>NoSuchKey</Code></Error>',
17
      { status: 404, headers: { 'Content-Type': 'application/xml' } }
18
    );
19
  } else if (chaos < 0.6) {
20
    // Bandwidth limit exceeded
21
    return new Response('Rate limit exceeded', { status: 429 });
22
  } else if (chaos < 0.8) {
23
    // Corrupted metadata
24
    return new Response('corrupted object content', {
25
      headers: {
26
        'Content-Type': 'text/plain',
27
        'CF-R2-Metadata-Size': 'not-a-number', // Invalid metadata
28
        ETag: 'invalid-etag-format',
29
      },
30
    });
31
  } else {
32
    // Wrong content type but valid data
33
    return new Response(JSON.stringify({ not: 'xml', but: 'json' }), {
34
      headers: { 'Content-Type': 'application/xml' }, // Lying about content type
35
    });
36
  }
37
}
38
 
39
export default {
40
  async fetch(request, env, ctx) {
41
    // Random chaos injection
42
    if (shouldChaos()) {
43
      return getChaoticR2Response();
44
    }
45
 
46
    const { pathname } = new URL(request.url);
47
    const method = request.method;
48
 
49
    if (method === 'GET' && pathname !== '/') {
50
      // GET object
51
      return new Response('test-object-content', {
52
        headers: {
53
          'Content-Type': 'text/plain',
54
          'CF-R2-Metadata-Size': '18',
55
        },
56
      });
57
    } else if (method === 'PUT') {
58
      // PUT object
59
      return new Response(
60
        JSON.stringify({
61
          etag: 'mock-etag-' + Math.random().toString(36).substr(2, 9),
62
        }),
63
        {
64
          headers: { 'Content-Type': 'application/json' },
65
        }
66
      );
67
    } else if (method === 'GET' && pathname === '/') {
68
      // LIST objects (sometimes return inconsistent results)
69
      const objects = [{ key: 'test-object', metadata: { size: 18 } }];
70
      if (Math.random() < 0.1) {
71
        // Sometimes add random objects to list
72
        objects.push({
73
          key: 'mystery-object',
74
          metadata: { size: Math.floor(Math.random() * 1000) },
75
        });
76
      }
77
 
78
      return new Response(
79
        JSON.stringify({
80
          keys: objects,
81
          is_truncated: Math.random() < 0.05, // Sometimes claim truncation
82
        }),
83
        {
84
          headers: { 'Content-Type': 'application/json' },
85
        }
86
      );
87
    }
88
 
89
    return new Response('R2 mock ready', { status: 200 });
90
  },
91
};