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node.jsaws-lambdabunyan

Bunyan logger not printing "ERROR" log level in aws cloudwatch log

We are using Bunyan lib for aws lambda function for cloud watch. I am observing , when I print Bunyan logger with status error , it is printing error format as follows

{
    "name": "test-abc",
    "serviceID": ".......................",
    "requestID": "........................",
    "hostname": "................",
    "pid": 8,
    "function": "_testStore",
    "level": 50,
    "msg": "store_id is missing",
    "time": "2020-11-16T19:17:41.109Z",
    "v": 0
}

while, when I log the error using console.error function , I am getting error log in the below format

2020-11-16 13:41:27.357 (-06:00) a..... ERROR store_id is missing

As ERROR logLevel tag in cloud watch help , to generate cloud error matrix, how could I use Bunyan for the same to print ERROR tag before the JSON object.

Solution

  • Buyan format uses level as a decimal number where level error means 50.

    Please check the official documentation: https://github.com/trentm/node-bunyan#levels