Compose-for-mongodb Bluemix与pencilblue的连接

时间:2017-05-04 10:24:10

标签: node.js mongodb ibm-cloud compose pencilblue

目前,我正在使用Bluemix部署和托管使用PencilBlue的网站。我的问题在于连接存储服务" compose-for-mongo"和铅笔蓝框架。 此连接通过VCAP JSON完成。 VCAP具有以下结构;

{
    "compose-for-mongodb": [
        {
            "credentials": {
                "db_type": "mongodb",
                "name": "**************************************",
                "uri_cli": "**************************************",
                "ca_certificate_base64": "*********************************************************************",
                "deployment_id": "*********************************",
                "uri": "******************************************************"
            },
            "syslog_drain_url": null,
            "label": "compose-for-mongodb",
            "provider": null,
            "plan": "***********",
            "name": "************************",
            "tags": [
                "big_data",
                "data_management",
                "ibm_created"
            ]
        }
    ]
}

据我所知,"撰写为mongodb"是集群而不是服务器。我们需要在PencilBlue和这个" cluster"之间建立连接。通过VCAP JSON。目前,我们正试图在config.js中引导JSON解析,如此:

 if (typeof process.env.VCAP_SERVICES === 'string') {
        try {
            var vcapServices = JSON.parse(process.env.VCAP_SERVICES);
            var vcapMongo = vcapServices['compose-for-mongodb'][0].credentials;

            var uri = vcapMongo.uri;

            mongoConfig.servers = [
                uri
            ];

            var userPassword = uri.split('mongodb://')[1].split('@')[0].split(':');

            mongoConfig.authentication = {
                un: userPassword[0],
                pw: userPassword[1]
            };

            var db = uri.split('?uri=')[0].split('/')[1];

            mongoConfig.options.mongos = {
                ssl: true,
                sslValidate: true,
                sslCA: [new Buffer(vcapMongo.ca_certificate_base64, 'base64')],
                poolSize: 1,
                reconnectTries: 1
            };

            mongoConfig.name = db;

我们尝试了多种方法但没有取得任何成功。

有没有人遇到过这个问题?有没有关于这个主题的文件?

重现步骤:

创建一个Bluemix节点应用程序并将其与" compose-for-mongodb"存储服务。

PencilBlue版本:0.8.0

环境描述:Bluemix中的Node.js SDK和连接的compose-for-mongodb服务

1 个答案:

答案 0 :(得分:1)

我已经将Pencilblue框架与NoSQL数据源(例如Compose-for-mongodb)连接起来的经验和成功。在这里' sa sample repo有一些方便的部署到bluemix按钮,为你设置一切 - 如果你想要一个交钥匙方法(警告:需要一些耐心:-)管道脚本包括一些硬编码延迟(约8分钟)以适应服务实例化的不确定性)。对于您的特定问题,存储库config.js应该有所帮助。最后,此repo还使用了this repo内使用Bluemix对​​象存储服务的媒体提供程序插件。

这是一段摘录:

[....]

try {
  var services = JSON.parse(process.env.VCAP_SERVICES);
  // look for a service starting with 'mysql'
  // MySQL is the only one supported by Ghost right now
  for (var svcName in services) {
      if (svcName.match(/^compose-for-mongodb/)) {
          mongoCreds = services[svcName][0]['credentials'];
          var uriObject = mongodbUri.parse(mongoCreds.uri)
          mongoCreds.host = uriObject.hosts[0].host
          mongoCreds.port = uriObject.hosts[0].port
          mongoCreds.user = uriObject.username
          mongoCreds.password = uriObject.password
          mongoCreds.client = 'mongo';
          mongoCreds.userpass = mongoCreds.user + ":" + mongoCreds.password + "@"
          mongoCreds.db = uriObject.database;
      }
  }
}

[....]

"db": {
        "type": mongoCreds.client,
        "servers": [
          "mongodb://" + mongoCreds.userpass + mongoCreds.host + ":" + mongoCreds.port
        ],
        "name": mongoCreds.db,
        "options": {
          "server": {
             "ssl": cloud,
             "sslValidate": cloud,
             "sslCert": Buffer.from(mongoCreds.ca_certificate_base64, 'base64').toString('ascii'),
             "sslCA" : [Buffer.from(mongoCreds.ca_certificate_base64, 'base64').toString('ascii')]
          }
        },
        "writeConcern": "majority",
        "query_logging": false,
        "authentication": {
          "un": mongoCreds.user,
          "pw": mongoCreds.password
        }
    },

[....]