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  1. Node.js Driver
  2. NODE-6249

Change stream error receives TypeError

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      1. What would you like to communicate to the user about this feature?
      2. Would you like the user to see examples of the syntax and/or executable code and its output?
      3. Which versions of the driver/connector does this apply to?

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      1. What would you like to communicate to the user about this feature? 2. Would you like the user to see examples of the syntax and/or executable code and its output? 3. Which versions of the driver/connector does this apply to?

      Use Case

      As a developer
      I want use the change stream without receiving type errors
      So that it works like 6.7.0

      Repro code

      const resumeToken = get_the_resume_token()
      const changeStream = collection.watch(
          [
             ...the pipeline does a $match and a $project
          ],
          {
            fullDocument: 'updateLookup',
            resumeToken // NOTE: in our scenario this is undefined!
          }
      )
      
      changeStream.on('change', changeStreamChangeEventHandler)
      changeStream.on('error', async(error) => {
          log.error({ error, code: error?.code }, 'changeStream error') // here we see the TypeError
          throw new Error('unexpected error, restart service') // we decide to crash on error (there is actually more logic to it but it would not be interesting for this repro.
      })
      

       

      The log seen in the `error` handler is the following:

      {
          "level": 50,
          "time": 1719911469235,
          "pid": 6,
          "hostname": "tenant-overview-84d6f88f57-62g6h",
          "error": {
              "type": "TypeError",
              "message": "(responseType ?? responses_1.MongoDBResponse).make is not a function",
              "stack": "TypeError: (responseType ?? responses_1.MongoDBResponse).make is not a function
                  at Connection.sendWire (/home/node/app/node_modules/mongodb/lib/cmap/connection.js:243:80)
                  at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
                  at async Connection.sendCommand (/home/node/app/node_modules/mongodb/lib/cmap/connection.js:280:24)
                  at async Connection.command (/home/node/app/node_modules/mongodb/lib/cmap/connection.js:313:26)
                  at async Server.command (/home/node/app/node_modules/mongodb/lib/sdam/server.js:167:29)
                  at async AggregateOperation.executeCommand (/home/node/app/node_modules/mongodb/lib/operations/command.js:73:16)
                  at async AggregateOperation.execute (/home/node/app/node_modules/mongodb/lib/operations/aggregate.js:86:16)
                  at async executeOperation (/home/node/app/node_modules/mongodb/lib/operations/execute_operation.js:136:16)
                  at async ChangeStreamCursor._initialize (/home/node/app/node_modules/mongodb/lib/cursor/change_stream_cursor.js:81:26)
                  at async ChangeStreamCursor.cursorInit (/home/node/app/node_modules/mongodb/lib/cursor/abstract_cursor.js:471:27)"
          },
          "msg": "changeStream error"
      }

       

       

      The affected line causes the make is not a function TypeError

      responseType ?? responses_1.MongoDBResponse).make is not a function

       

      My guess is that we are either incurring in a falsy (but not nullish) responseType OR an unexpected responseType that doesn't fit the MongoDBResponseConstructor type.

       

      I couldn't do further debugging on my own.

      User Impact

      • At the moment we can't upgrade the driver without incurring in this issue, rolling back to v6.7.0 makes the application work.

      Dependencies

      none

      Unknowns

      • How to properly debug/test this issue to submit a PR on my own, I think I've figured out what is going on and have a possible proposal but I can't be sure.

      Acceptance Criteria

      Implementation Requirements

      none

      Testing Requirements

      none

      Documentation Requirements

      none

      Follow Up Requirements

      none

        1. Screenshot 2024-07-03 alle 10.02.55.png
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        3. node_6249.mjs
          2 kB

            Assignee:
            Unassigned Unassigned
            Reporter:
            federico.maggi@mia-platform.eu Federico Maggi
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              Created:
              Updated:
              Resolved: