File: test-cluster-worker-exit.js

package info (click to toggle)
nodejs 0.10.29~dfsg-2
  • links: PTS, VCS
  • area: main
  • in suites: jessie, jessie-kfreebsd
  • size: 32,760 kB
  • ctags: 58,506
  • sloc: cpp: 330,356; ansic: 47,440; python: 12,756; sh: 1,365; makefile: 665; lisp: 222; ruby: 76; xml: 16; awk: 10
file content (152 lines) | stat: -rw-r--r-- 5,053 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.


// test-cluster-worker-exit.js
// verifies that, when a child process exits (by calling `process.exit(code)`)
// - the parent receives the proper events in the proper order, no duplicates
// - the exitCode and signalCode are correct in the 'exit' event
// - the worker.suicide flag, and worker.state are correct
// - the worker process actually goes away

var common = require('../common');
var assert = require('assert');
var cluster = require('cluster');

var EXIT_CODE = 42;

if (cluster.isWorker) {
  var http = require('http');
  var server = http.Server(function() { });

  server.once('listening', function() {
    process.exit(EXIT_CODE);
  });
  server.listen(common.PORT, '127.0.0.1');

} else if (cluster.isMaster) {

  var expected_results = {
      cluster_emitDisconnect: [1, "the cluster did not emit 'disconnect'"],
      cluster_emitExit: [1, "the cluster did not emit 'exit'"],
      cluster_exitCode: [EXIT_CODE, 'the cluster exited w/ incorrect exitCode'],
      cluster_signalCode: [null, 'the cluster exited w/ incorrect signalCode'],
      worker_emitDisconnect: [1, "the worker did not emit 'disconnect'"],
      worker_emitExit: [1, "the worker did not emit 'exit'"],
      worker_state: ['disconnected', 'the worker state is incorrect'],
      worker_suicideMode: [false, 'the worker.suicide flag is incorrect'],
      worker_died: [true, 'the worker is still running'],
      worker_exitCode: [EXIT_CODE, 'the worker exited w/ incorrect exitCode'],
      worker_signalCode: [null, 'the worker exited w/ incorrect signalCode']
  };
  var results = {
      cluster_emitDisconnect: 0,
      cluster_emitExit: 0,
      worker_emitDisconnect: 0,
      worker_emitExit: 0
  };


  // start worker
  var worker = cluster.fork();

  worker.once('listening', function() {
    // the worker is up and running...
  });


  // Check cluster events
  cluster.on('disconnect', function() {
    results.cluster_emitDisconnect += 1;
  });
  cluster.on('exit', function(worker) {
    results.cluster_exitCode = worker.process.exitCode;
    results.cluster_signalCode = worker.process.signalCode;
    results.cluster_emitExit += 1;
    assert.ok(results.cluster_emitDisconnect,
        "cluster: 'exit' event before 'disconnect' event");
  });

  // Check worker eventes and properties
  worker.on('disconnect', function() {
    results.worker_emitDisconnect += 1;
    results.worker_suicideMode = worker.suicide;
    results.worker_state = worker.state;
  });

  // Check that the worker died
  worker.once('exit', function(exitCode, signalCode) {
    results.worker_exitCode = exitCode;
    results.worker_signalCode = signalCode;
    results.worker_emitExit += 1;
    results.worker_died = !alive(worker.process.pid);
    assert.ok(results.worker_emitDisconnect,
        "worker: 'exit' event before 'disconnect' event");

    process.nextTick(function() { finish_test(); });
  });

  var finish_test = function() {
    try {
      checkResults(expected_results, results);
    } catch (exc) {
      console.error('FAIL: ' + exc.message);
      if (exc.name != 'AssertionError') {
        console.trace(exc);
      }

      process.exit(1);
      return;
    }
    process.exit(0);
  };
}

// some helper functions ...

  function checkResults(expected_results, results) {
    for (var k in expected_results) {
      var actual = results[k],
          expected = expected_results[k];

      if (typeof expected === 'function') {
        expected(r[k]);
      } else {
        var msg = (expected[1] || '') +
            (' [expected: ' + expected[0] + ' / actual: ' + actual + ']');

        if (expected && expected.length) {
          assert.equal(actual, expected[0], msg);
        } else {
          assert.equal(actual, expected, msg);
        }
      }
    }
  }

  function alive(pid) {
    try {
      process.kill(pid, 'SIGCONT');
      return true;
    } catch (e) {
      return false;
    }
  }