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
|
'use strict';
const common = require('../common');
const assert = require('assert');
const spawn = require('child_process').spawn;
const os = require('os');
const path = require('path');
const port = common.PORT;
const serverPath = path.join(common.fixturesDir, 'clustered-server', 'app.js');
// cannot use 'Flags: --no-deprecation' since it doesn't effect child
const args = [`--debug-port=${port}`, '--no-deprecation', serverPath];
const options = { stdio: ['inherit', 'inherit', 'pipe', 'ipc'] };
const child = spawn(process.execPath, args, options);
let expectedContent = [
'Starting debugger agent.',
'Debugger listening on 127.0.0.1:' + (port + 0),
'Starting debugger agent.',
'Debugger listening on 127.0.0.1:' + (port + 1),
'Starting debugger agent.',
'Debugger listening on 127.0.0.1:' + (port + 2),
].join(os.EOL);
expectedContent += os.EOL; // the last line also contains an EOL character
let debuggerAgentsOutput = '';
let debuggerAgentsStarted = false;
let pids;
child.stderr.on('data', function(data) {
const childStderrOutputString = data.toString();
const lines = childStderrOutputString.replace(/\r/g, '').trim().split('\n');
lines.forEach(function(line) {
console.log('> ' + line);
if (line === 'all workers are running') {
child.on('message', function(msg) {
if (msg.type !== 'pids')
return;
pids = msg.pids;
console.error('got pids %j', pids);
process._debugProcess(child.pid);
debuggerAgentsStarted = true;
});
child.send({
type: 'getpids'
});
}
});
if (debuggerAgentsStarted) {
debuggerAgentsOutput += childStderrOutputString;
if (debuggerAgentsOutput.length === expectedContent.length) {
onNoMoreDebuggerAgentsOutput();
}
}
});
function onNoMoreDebuggerAgentsOutput() {
assertDebuggerAgentsOutput();
process.exit();
}
process.on('exit', function onExit() {
// Kill processes in reverse order to avoid timing problems on Windows where
// the parent process is killed before the children.
pids.reverse().forEach(function(pid) {
process.kill(pid);
});
});
function assertDebuggerAgentsOutput() {
// Workers can take different amout of time to start up, and child processes'
// output may be interleaved arbitrarily. Moreover, child processes' output
// may be written using an arbitrary number of system calls, and no assumption
// on buffering or atomicity of output should be made. Thus, we process the
// output of all child processes' debugger agents character by character, and
// remove each character from the set of expected characters. Once all the
// output from all debugger agents has been processed, we consider that we got
// the content we expected if there's no character left in the initial
// expected content.
debuggerAgentsOutput.split('').forEach(function gotChar(char) {
expectedContent = expectedContent.replace(char, '');
});
assert.strictEqual(expectedContent, '');
}
|
