Question

为了在grunt插件上运行ssh，使用ssh2，我创建了一个任务，但是在稍后的connect（）之前，在事件发生时，该进程将被终止。可能导致这种情况的原因是什么？

正常程序没有问题，你不想使用grunt.js。。

Gruntfile

ssh2sample: {
        default_options: {
        options: {
        'host': 'xxx.xxx.xxx.xxx',
        'port': 22,
        'username': 'names',
        'privateKey':  'keys',
        'passphrase': 'pass'
    },

任务/ ssh2sample.js

'use strict';

module.exports = function(grunt) {

// Please see the Grunt documentation for more information regarding task
// creation: http://gruntjs.com/creating-tasks

grunt.registerMultiTask('ssh2sample', 'The best Grunt plugin ever.', function() {

// Merge task-specific and/or target-specific options with these defaults.

  var Connection = require('ssh2');


  var options = this.options();
  options.privateKey = require('fs').readFileSync(options.privateKey);

  var c = new Connection();

  c.on('connect', function() {
      console.log('Connection :: connect');
  });

  c.on('ready', function() {
      console.log('Connection :: ready');
      c.exec('uptime', function(err, stream) {
          //if (err) throw err;
          stream.on('data', function(data, extended) {
              console.log(extended === 'stderr' ? 'STDERR: ' : 'STDOUT: '+ data);
          });
          stream.on('end', function() {
              console.log('Stream :: EOF');
          });
          stream.on('close', function() {
              console.log('Stream :: close');
          });
          stream.on('exit', function(code, signal) {
              console.log('Stream :: exit :: code: ' + code + ', signal: ' + signal);
              c.end();
          });
      });
  });
  c.on('error', function(err) {
      console.log('Connection :: error :: ' + err);
  });
  c.on('end', function() {
      console.log('Connection :: end');
  });
  c.on('close', function(had_error) {
      console.log('Connection :: close');
  });

  c.connect(options);
}
});

没问题ssh2connect

  var Connection = require('ssh2');


  var options = this.options();
  options.privateKey = require('fs').readFileSync(options.privateKey);

  var c = new Connection();

  c.on('connect', function() {
      console.log('Connection :: connect');
  });

  c.on('ready', function() {
      console.log('Connection :: ready');
      c.exec('uptime', function(err, stream) {
          //if (err) throw err;
          stream.on('data', function(data, extended) {
              console.log(extended === 'stderr' ? 'STDERR: ' : 'STDOUT: '+ data);
          });
          stream.on('end', function() {
              console.log('Stream :: EOF');
          });
          stream.on('close', function() {
              console.log('Stream :: close');
          });
          stream.on('exit', function(code, signal) {
              console.log('Stream :: exit :: code: ' + code + ', signal: ' + signal);
              c.end();
          });
      });
  });
  c.on('error', function(err) {
      console.log('Connection :: error :: ' + err);
  });
  c.on('end', function() {
      console.log('Connection :: end');
  });
  c.on('close', function(had_error) {
      console.log('Connection :: close');
  });

  var key = require(fs).readdirSync(keys); 

  c.connect({
        'host': 'xxx.xxx.xxx.xxx',
        'port': 22,
        'username': 'names',
        'privateKey':  key,
        'passphrase': 'pass'
   });

Answer 1

默认情况下，Grunt任务是同步的。如果您的任务是异步的（就像您的任务一样），您必须告诉它等待var done = this.async();，然后在任务完成时致电done();。

请参阅：http://gruntjs.com/frequently-asked-questions#why-doesn-t-my-asynchronous-task-complete

grunt.js任务为什么没有事件听？

1 个答案: