我一直在 OpenShift 上使用 NodeJS 进行一些工作，当我尝试在 Node 实例中运行 Mosca 服务器时遇到问题。我收到的错误如下：
[Error: /var/lib/openshift/5547bd284382ec394a000088/app-root/runtime/repo/node_modules/mosca/node_modules/mongodb/node_modules/mongodb-core/node_modules/bson/node_modules/bson-ext/build/Release/bson.node: invalid ELF header]
js-bson: Failed to load c++ bson extension, using pure JS version
我最近使用 NodeJS 盒从头开始创建了一个新应用程序（在 OpenShift 上），并从盒中克隆了示例应用程序 git 存储库作为起点。我通过 npm 添加了 mosca (npm install mosca --save）。甚至没有使用 Mongo 作为 Mosca 的持久存储，所以只是在内存中运行，当我运行应用程序时，我收到了上面显示的错误。据我所知，当我在笔记本电脑上运行它时，一切都很好，所有版本都相同。
我已经尝试过在 Stack Overflow 上找到的一些方法，例如在将代码推回到 git 之前构建所有依赖模块并清理 npm 缓存，但没有效果。
如果有人对其他模块有类似的经验或对 Mosca 有相同的经验，并且可能能够为我指明正确的方向，我将不胜感激。
亲切的问候。
下面的代码是标准的 Node 示例应用程序模板，在启动函数中有一个示例 Mosca 服务器。
#!/bin/env node
// OpenShift sample Node application
var express = require('express');
var fs = require('fs');
var mosca = require('mosca');
/**
* Define the sample application.
*/
var SampleApp = function() {
// Scope.
var self = this;
/* ================================================================ */
/* Helper functions. */
/* ================================================================ */
/**
* Set up server IP address and port # using env variables/defaults.
*/
self.setupVariables = function() {
// Set the environment variables we need.
self.ipaddress = process.env.OPENSHIFT_NODEJS_IP;
self.port = process.env.OPENSHIFT_NODEJS_PORT || 8080;
if (typeof self.ipaddress === "undefined") {
// Log errors on OpenShift but continue w/ 127.0.0.1 - this
// allows us to run/test the app locally.
console.warn('No OPENSHIFT_NODEJS_IP var, using 127.0.0.1');
self.ipaddress = "127.0.0.1";
};
};
/**
* Populate the cache.
*/
self.populateCache = function() {
if (typeof self.zcache === "undefined") {
self.zcache = { 'index.html': '' };
}
// Local cache for static content.
self.zcache['index.html'] = fs.readFileSync('./index.html');
};
/**
* Retrieve entry (content) from cache.
* @param {string} key Key identifying content to retrieve from cache.
*/
self.cache_get = function(key) { return self.zcache[key]; };
/**
* terminator === the termination handler
* Terminate server on receipt of the specified signal.
* @param {string} sig Signal to terminate on.
*/
self.terminator = function(sig){
if (typeof sig === "string") {
console.log('%s: Received %s - terminating sample app ...',
Date(Date.now()), sig);
process.exit(1);
}
console.log('%s: Node server stopped.', Date(Date.now()) );
};
/**
* Setup termination handlers (for exit and a list of signals).
*/
self.setupTerminationHandlers = function(){
// Process on exit and signals.
process.on('exit', function() { self.terminator(); });
// Removed 'SIGPIPE' from the list - bugz 852598.
['SIGHUP', 'SIGINT', 'SIGQUIT', 'SIGILL', 'SIGTRAP', 'SIGABRT',
'SIGBUS', 'SIGFPE', 'SIGUSR1', 'SIGSEGV', 'SIGUSR2', 'SIGTERM'
].forEach(function(element, index, array) {
process.on(element, function() { self.terminator(element); });
});
};
/* ================================================================ */
/* App server functions (main app logic here). */
/* ================================================================ */
/**
* Create the routing table entries + handlers for the application.
*/
self.createRoutes = function() {
self.routes = { };
self.routes['/asciimo'] = function(req, res) {
var link = "http://i.imgur.com/kmbjB.png";
res.send("<html><body><img src='" + link + "'></body></html>");
};
self.routes['/'] = function(req, res) {
res.setHeader('Content-Type', 'text/html');
res.send(self.cache_get('index.html') );
};
};
/**
* Initialize the server (express) and create the routes and register
* the handlers.
*/
self.initializeServer = function() {
self.createRoutes();
self.app = express();
// Add handlers for the app (from the routes).
for (var r in self.routes) {
self.app.get(r, self.routes[r]);
}
};
/**
* Initializes the sample application.
*/
self.initialize = function() {
self.setupVariables();
self.populateCache();
self.setupTerminationHandlers();
// Create the express server and routes.
self.initializeServer();
};
/**
* Start the server (starts up the sample application).
*/
self.start = function() {
// Start the app on the specific interface (and port).
self.app.listen(self.port, self.ipaddress, function() {
console.log('%s: Node server started on %s:%d ...',
Date(Date.now() ), self.ipaddress, self.port);
});
// START MOSCA SERVER
var server = new mosca.Server({});
server.on('clientConnected', function(client) {
console.log('client connected', client.id);
});
// fired when a message is received
server.on('published', function(packet, client) {
console.log('Published', packet.payload);
});
server.on('ready', function() {
console.log('Mosca server is up and running');
});
};
}; /* Sample Application. */
/**
* main(): Main code.
*/
var zapp = new SampleApp();
zapp.initialize();
zapp.start();
