How to use mongodb-core - 10 common examples

// Socket options
  var socketOptions = options.socketOptions && Object.keys(options.socketOptions).length > 0
    ? options.socketOptions : options;

  // Translate all the options to the mongodb-core ones
  clonedOptions = translateOptions(clonedOptions, socketOptions);
  if(typeof clonedOptions.keepAlive == 'number') {
    clonedOptions.keepAliveInitialDelay = clonedOptions.keepAlive;
    clonedOptions.keepAlive = clonedOptions.keepAlive > 0;
  }

  // console.log("=============== create CReplSet")
  // console.dir(clonedOptions)
  // Create the ReplSet
  var replset = new CReplSet(seedlist, clonedOptions);
  // Server capabilities
  var sCapabilities = null;

  // Listen to reconnect event
  replset.on('reconnect', function() {
    self.emit('reconnect');
    store.execute();
  });

  // Internal state
  this.s = {
    // Replicaset
    replset: replset
    // Server capabilities
    , sCapabilities: null
    // Debug tag

GridStoreStream.prototype.write = function(chunk, encoding, callback) {
  var self = this;
  if(self.endCalled) return self.emit('error', MongoError.create({message: 'attempting to write to stream after end called', driver:true}))
  // Do we have to open the gridstore
  if(!self.gs.isOpen) {
    self.gs.open(function() {
      self.gs.isOpen = true;
      self.gs.write(chunk, function() {
        process.nextTick(function() {
          self.emit('drain');
        });
      });
    });
    return false;
  } else {
    self.gs.write(chunk, function() {
      self.emit('drain');
    });
    return true;

const index = arguments.length - 1;
    const cb = arguments[index];

    if (typeof cb === "function") {
      arguments[index] = function() {
        if (trace) trace.end();
        return cb.apply(this, arguments);
      };
    }
  }

  return insertOriginal.apply(this, arguments);
};
//mongo _find 'Cursor' callback is the first parameter
let _findOriginal = mongo.Cursor.prototype._find;

mongo.Cursor.prototype._find = function() {
  // console.log("Node Reaction Agent - MongoDB - Find");
  if (arguments.length > 0) {
    let trace = NodeReactionAgent.createTrace(library, "Find");

    const cb = arguments[0];

    if (typeof cb === "function") {
      arguments[0] = function() {
        if (trace) trace.end();
        return cb.apply(this, arguments);
      };
    }
  }

options.socketOptions && Object.keys(options.socketOptions).length > 0
        ? options.socketOptions
        : options;

    // Translate all the options to the mongodb-core ones
    clonedOptions = translateOptions(clonedOptions, socketOptions);

    // Build default client information
    clonedOptions.clientInfo = this.clientInfo;
    // Do we have an application specific string
    if (options.appname) {
      clonedOptions.clientInfo.application = { name: options.appname };
    }

    // Create the ReplSet
    var coreTopology = new CReplSet(seedlist, clonedOptions);

    // Listen to reconnect event
    coreTopology.on('reconnect', function() {
      self.emit('reconnect');
      store.execute();
    });

    // Internal state
    this.s = {
      // Replicaset
      coreTopology: coreTopology,
      // Server capabilities
      sCapabilities: null,
      // Debug tag
      tag: options.tag,
      // Store options

name: name,
      architecture: architecture,
      version: release
    },
    platform: nodejsversion
  }

  // Build default client information
  clonedOptions.clientInfo = this.clientInfo;
  // Do we have an application specific string
  if(options.appname) {
    clonedOptions.clientInfo.application = { name: options.appname };
  }

  // Create the ReplSet
  var replset = new CReplSet(seedlist, clonedOptions);

  // Listen to reconnect event
  replset.on('reconnect', function() {
    self.emit('reconnect');
    store.execute();
  });

  // Internal state
  this.s = {
    // Replicaset
    replset: replset
    // Server capabilities
    , sCapabilities: null
    // Debug tag
    , tag: options.tag
    // Store options

if(options.connectWithNoPrimary == true) {
    finalOptions.secondaryOnlyConnectionAllowed = true;
  }

  // Add the non connection store
  finalOptions.disconnectHandler = store;

  // Translate the options
  if(options.sslCA) finalOptions.ca = options.sslCA;
  if(typeof options.sslValidate == 'boolean') finalOptions.rejectUnauthorized = options.sslValidate;
  if(options.sslKey) finalOptions.key = options.sslKey;
  if(options.sslCert) finalOptions.cert = options.sslCert;
  if(options.sslPass) finalOptions.passphrase = options.sslPass;

  // Create the ReplSet
  var replset = new CReplSet(seedlist, finalOptions)
  // Server capabilities
  var sCapabilities = null;
  // Add auth prbufferMaxEntriesoviders
  replset.addAuthProvider('mongocr', new MongoCR());

  // Listen to reconnect event
  replset.on('reconnect', function() {
    self.emit('reconnect');
    store.execute();
  });

  // Internal state
  this.s = {
    // Replicaset
    replset: replset
    // Server capabilities

if(options.connectWithNoPrimary == true) {
    finalOptions.secondaryOnlyConnectionAllowed = true;
  }

  // Add the non connection store
  finalOptions.disconnectHandler = store;

  // Translate the options
  if(options.sslCA) finalOptions.ca = options.sslCA;
  if(typeof options.sslValidate == 'boolean') finalOptions.rejectUnauthorized = options.sslValidate;
  if(options.sslKey) finalOptions.key = options.sslKey;
  if(options.sslCert) finalOptions.cert = options.sslCert;
  if(options.sslPass) finalOptions.passphrase = options.sslPass;

  // Create the ReplSet
  var replset = new CReplSet(seedlist, finalOptions)
  // Server capabilities
  var sCapabilities = null;
  // Add auth prbufferMaxEntriesoviders
  replset.addAuthProvider('mongocr', new MongoCR());

  // Listen to reconnect event
  replset.on('reconnect', function() {
    self.emit('reconnect');
    store.execute();
  });

  // Internal state
  this.s = {
    // Replicaset
    replset: replset
    // Server capabilities

name: name,
      architecture: architecture,
      version: release
    },
    platform: nodejsversion
  }

  // Build default client information
  clonedOptions.clientInfo = this.clientInfo;
  // Do we have an application specific string
  if(options.appname) {
    clonedOptions.clientInfo.application = { name: options.appname };
  }

  // Create the ReplSet
  var replset = new CReplSet(seedlist, clonedOptions);

  // Listen to reconnect event
  replset.on('reconnect', function() {
    self.emit('reconnect');
    store.execute();
  });

  // Internal state
  this.s = {
    // Replicaset
    replset: replset
    // Server capabilities
    , sCapabilities: null
    // Debug tag
    , tag: options.tag
    // Store options

name: name,
      architecture: architecture,
      version: release
    },
    platform: nodejsversion
  }

  // Build default client information
  clonedOptions.clientInfo = this.clientInfo;
  // Do we have an application specific string
  if(options.appname) {
    clonedOptions.clientInfo.application = { name: options.appname };
  }

  // Create the ReplSet
  var replset = new CReplSet(seedlist, clonedOptions);

  // Listen to reconnect event
  replset.on('reconnect', function() {
    self.emit('reconnect');
    store.execute();
  });

  // Internal state
  this.s = {
    // Replicaset
    replset: replset
    // Server capabilities
    , sCapabilities: null
    // Debug tag
    , tag: options.tag
    // Store options

finalOptions.secondaryOnlyConnectionAllowed = true;
  }

  // Add the non connection store
  finalOptions.disconnectHandler = store;

  // Translate the options
  if(options.sslCA) finalOptions.ca = options.sslCA;
  if(typeof options.sslValidate == 'boolean') finalOptions.rejectUnauthorized = options.sslValidate;
  if(options.sslKey) finalOptions.key = options.sslKey;
  if(options.sslCert) finalOptions.cert = options.sslCert;
  if(options.sslPass) finalOptions.passphrase = options.sslPass;
  if(options.checkServerIdentity) finalOptions.checkServerIdentity = options.checkServerIdentity;

  // Create the ReplSet
  var replset = new CReplSet(seedlist, finalOptions)
  // Server capabilities
  var sCapabilities = null;

  // Listen to reconnect event
  replset.on('reconnect', function() {
    self.emit('reconnect');
    store.execute();
  });

  // Internal state
  this.s = {
    // Replicaset
    replset: replset
    // Server capabilities
    , sCapabilities: null
    // Debug tag