Cannot read properties of undefined (reading 'collections')

Hi,

I encounter the following error while connecting…

C:\projects\otto-js\node_modules\ottoman\lib\ottoman\ottoman.js:173
        return this.bucket.collections();
                           ^

TypeError: Cannot read properties of undefined (reading 'collections')
    at Ottoman.get collectionManager [as collectionManager] (C:\projects\otto-js\node_modules\ottoman\lib\ottoman\ottoman.js:173:28)
    at Ottoman.<anonymous> (C:\projects\otto-js\node_modules\ottoman\lib\ottoman\ottoman.js:375:59)
    at Generator.next (<anonymous>)
    at C:\projects\otto-js\node_modules\ottoman\lib\ottoman\ottoman.js:27:71
    at new Promise (<anonymous>)
    at __awaiter (C:\projects\otto-js\node_modules\ottoman\lib\ottoman\ottoman.js:23:12)
    at Ottoman.ensureCollections (C:\projects\otto-js\node_modules\ottoman\lib\ottoman\ottoman.js:367:16)
    at Ottoman.<anonymous> (C:\projects\otto-js\node_modules\ottoman\lib\ottoman\ottoman.js:444:24)
    at Generator.next (<anonymous>)
    at C:\projects\otto-js\node_modules\ottoman\lib\ottoman\ottoman.js:27:71

Using the following script

const {
  Ottoman, getModel, Schema, SearchConsistency,
} = require('ottoman');

const ottoman = new Ottoman({ collectionName: '_default' });

ottoman.connect({
  connectionString: 'couchbase://localhost',
  bucketName: 'testBucket',
  username: 'user',
  password: 'password',
});

const modelOptions = {
  scopeName: 'testpostscope',
  collectionName: 'testpostcollection',
  maxExpiry: 1200,
};

const schema = new Schema({
  text: { type: String },
});

ottoman.model('message', schema, modelOptions);

ottoman.start();

const messageModel = getModel('message');
messageModel.create({ text: 'test' })
  .then((result) => console.log(result));

Using ottoman 2.1.0. Any idea?

Thanks!

---

Not sure if it helps, here’s the log with debug on

❯ node index.js
  couchnode:lcb:info (instance @ C:\Jenkins\workspace\nodejs\couchnode\couchnode-scripted-build-pipeline\couchnode\deps\lcb\src\instance.cc:521) Version=3.2.4-njs, Changeset=38cc0708dfcc5a706c6b21dc80bcd84f05890225 +0ms
  couchnode:lcb:info (instance @ C:\Jenkins\workspace\nodejs\couchnode\couchnode-scripted-build-pipeline\couchnode\deps\lcb\src\instance.cc:522) Effective connection string: couchbase://localhost?config_total_timeout=30s&enable_tracing=off&enable_operation_metrics=off&client_string=couchnode%2F3.2.4%20(node%2F16.13.2%3B%20v8%2F9.4.146.24-node.14%3B%20ssl%2F1.1.1l%2Bquic). Bucket=(null) +1ms
  couchnode:lcb:debug (instance @ C:\Jenkins\workspace\nodejs\couchnode\couchnode-scripted-build-pipeline\couchnode\deps\lcb\src\instance.cc:389) Applying initial cntl config_total_timeout=30s +0ms
  couchnode:lcb:debug (instance @ C:\Jenkins\workspace\nodejs\couchnode\couchnode-scripted-build-pipeline\couchnode\deps\lcb\src\instance.cc:389) Applying initial cntl enable_tracing=off +0ms  couchnode:lcb:debug (instance @ C:\Jenkins\workspace\nodejs\couchnode\couchnode-scripted-build-pipeline\couchnode\deps\lcb\src\instance.cc:389) Applying initial cntl enable_operation_metrics=off +0ms
  couchnode:lcb:debug (instance @ C:\Jenkins\workspace\nodejs\couchnode\couchnode-scripted-build-pipeline\couchnode\deps\lcb\src\instance.cc:389) Applying initial cntl client_string=couchnode/3.2.4 (node/16.13.2; v8/9.4.146.24-node.14; ssl/1.1.1l+quic) +1ms
  couchnode:lcb:info (instance @ C:\Jenkins\workspace\nodejs\couchnode\couchnode-scripted-build-pipeline\couchnode\deps\lcb\src\instance.cc:212) DNS SRV lookup failed: LCB_ERR_UNKNOWN_HOST (1049). Ignore this if not relying on DNS SRV records +11ms
  couchnode:lcb:debug (instance @ C:\Jenkins\workspace\nodejs\couchnode\couchnode-scripted-build-pipeline\couchnode\deps\lcb\src\instance.cc:155) Adding host localhost:8091 to initial HTTP bootstrap list +10ms
  couchnode:lcb:debug (instance @ C:\Jenkins\workspace\nodejs\couchnode\couchnode-scripted-build-pipeline\couchnode\deps\lcb\src\instance.cc:155) Adding host localhost:11210 to initial CCCP bootstrap list +0ms
  couchnode:lcb:trace (instance @ C:\Jenkins\workspace\nodejs\couchnode\couchnode-scripted-build-pipeline\couchnode\deps\lcb\src\instance.cc:193) Bootstrap hosts loaded (cccp:1, http:1) +0ms 
  couchnode:lcb:info (bootstrap @ C:\Jenkins\workspace\nodejs\couchnode\couchnode-scripted-build-pipeline\couchnode\deps\lcb\src\bootstrap.cc:277) Requested network configuration: heuristic +3ms
  couchnode:lcb:debug (confmon @ C:\Jenkins\workspace\nodejs\couchnode\couchnode-scripted-build-pipeline\couchnode\deps\lcb\src\bucketconfig\confmon.cc:94) Preparing providers (this may be called multiple times) +2ms
  couchnode:lcb:debug (confmon @ C:\Jenkins\workspace\nodejs\couchnode\couchnode-scripted-build-pipeline\couchnode\deps\lcb\src\bucketconfig\confmon.cc:100) Provider CCCP is ENABLED +1ms     
  couchnode:lcb:debug (confmon @ C:\Jenkins\workspace\nodejs\couchnode\couchnode-scripted-build-pipeline\couchnode\deps\lcb\src\bucketconfig\confmon.cc:100) Provider HTTP is ENABLED +0ms     
  couchnode:lcb:trace (confmon @ C:\Jenkins\workspace\nodejs\couchnode\couchnode-scripted-build-pipeline\couchnode\deps\lcb\src\bucketconfig\confmon.cc:319) Refreshing current cluster map (bucket: (null)) +2ms
  couchnode:lcb:info (cccp @ C:\Jenkins\workspace\nodejs\couchnode\couchnode-scripted-build-pipeline\couchnode\deps\lcb\src\bucketconfig\bc_cccp.cc:176) Requesting connection to node localhost:11210 for CCCP configuration +2ms
  couchnode:lcb:debug (lcbio_mgr @ C:\Jenkins\workspace\nodejs\couchnode\couchnode-scripted-build-pipeline\couchnode\deps\lcb\src\lcbio\manager.cc:501) <localhost:11210> (HE=00000255A967DA30) Creating new connection because none are available in the pool +1ms
  couchnode:lcb:trace (lcbio_mgr @ C:\Jenkins\workspace\nodejs\couchnode\couchnode-scripted-build-pipeline\couchnode\deps\lcb\src\lcbio\manager.cc:413) <localhost:11210> (HE=00000255A967DA30) New pool entry: I=000002559FA5DB30 +2ms
  couchnode:lcb:info (connection @ C:\Jenkins\workspace\nodejs\couchnode\couchnode-scripted-build-pipeline\couchnode\deps\lcb\src\lcbio\connect.cc:497) <localhost:11210> (SOCK=f4f4a311b8151120) Starting. Timeout=2000000us +1ms

[bwgjoseph]

It is indeed a mystery.

I agree with you on disconnecting and have added it.

And I believe that #602 is the same issue like this, I only realize this recently, and will be closing that as well.

Appreciate your time and help in troubleshooting this issue with me

[gsi-alejandro]

this way:

const AttachmentsModel = model(modelName, schema, modelOptions);

export default function (app: Application): ModelTypes {
  return getModel(modelName) || AttachmentsModel;
}

the model will be registered when the file will be imported (attachments.model.ts), the model function will be executed when javascript is importing files (when the code starts to be executed - execution time).

in the previous version:

export default function (app: Application): ModelTypes {
  const modelName = 'attachments';
  const modelOptions: ModelOptions = {
    scopeName: 'attachmentscope',
    collectionName: 'attachmentcollection',
  };

  const schema = new Schema({
    filename: {
      type: String,
      required: true,
    },
    data: {
      type: String,
      required: true,
    },
    mimetype: {
      type: String,
      required: true,
    },
    size: {
      type: Number,
      required: true,
    },
  }).add(baseSchema);

  return getModel(modelName) || model(modelName, schema, modelOptions);
}

the model will be not registered until the exported default function will be executed. (feathersjs will execute it to create the service when requested) therefore when the start function is executed there are no models registered yet, with no models, Ottoman has no information to create scopes, collections, indexes, …

Summarize:

imagine a index.js file with this content

console.log('executed');

node index.js will produce “executed” (our modification achieve this)

instead this other index.js file with content:

function main() {
 console.log('executed');
}  

node index.js will produce no output. (console.log statement never was executed, just from load the files)