How would I deal with the unhandled exception that is raised from s3.getObject()












1















I am trying to get an image from S3 using this backend function below:



exports.getImage = function (req, res) {
let request = req.query;
let key = request.key;
let bucket = request.bucket;
if (!key) {
return res.status(400).end("missing key");
}
if (!bucket) {
return res.status(400).end("missing bucket name");
}
let options = {
Bucket: bucket,
Key: key
};

res.setHeader('Content-Type', content_map['jpg']);

let nimage = null;

try {
nimage = await s3.getObject(options).createReadStream().pipe(res);
}
catch (err) {
console.log(err);
}
};


As one can see, there are measures against the lack of a key or a bucket within the request, a status 400 is sent back. However, I want to handle situations where the wrong key or the the wrong bucket is specified. The situation where the wrong key is added to the request in erroneously handled in the code above.



I also handled it using the code below, but did not end up getting any results:



s3.getObject(options, function(err, data) {
if (err) {
return res.status(400).end(err);
}
}).createReadStream().pipe(res);




The error that pops up is:



4:15:32 PM - error: caught an unhandled exception! NoSuchKey: The specified key does not exist.
NoSuchKey: The specified key does not exist.









share|improve this question



























    1















    I am trying to get an image from S3 using this backend function below:



    exports.getImage = function (req, res) {
    let request = req.query;
    let key = request.key;
    let bucket = request.bucket;
    if (!key) {
    return res.status(400).end("missing key");
    }
    if (!bucket) {
    return res.status(400).end("missing bucket name");
    }
    let options = {
    Bucket: bucket,
    Key: key
    };

    res.setHeader('Content-Type', content_map['jpg']);

    let nimage = null;

    try {
    nimage = await s3.getObject(options).createReadStream().pipe(res);
    }
    catch (err) {
    console.log(err);
    }
    };


    As one can see, there are measures against the lack of a key or a bucket within the request, a status 400 is sent back. However, I want to handle situations where the wrong key or the the wrong bucket is specified. The situation where the wrong key is added to the request in erroneously handled in the code above.



    I also handled it using the code below, but did not end up getting any results:



    s3.getObject(options, function(err, data) {
    if (err) {
    return res.status(400).end(err);
    }
    }).createReadStream().pipe(res);




    The error that pops up is:



    4:15:32 PM - error: caught an unhandled exception! NoSuchKey: The specified key does not exist.
    NoSuchKey: The specified key does not exist.









    share|improve this question

























      1












      1








      1








      I am trying to get an image from S3 using this backend function below:



      exports.getImage = function (req, res) {
      let request = req.query;
      let key = request.key;
      let bucket = request.bucket;
      if (!key) {
      return res.status(400).end("missing key");
      }
      if (!bucket) {
      return res.status(400).end("missing bucket name");
      }
      let options = {
      Bucket: bucket,
      Key: key
      };

      res.setHeader('Content-Type', content_map['jpg']);

      let nimage = null;

      try {
      nimage = await s3.getObject(options).createReadStream().pipe(res);
      }
      catch (err) {
      console.log(err);
      }
      };


      As one can see, there are measures against the lack of a key or a bucket within the request, a status 400 is sent back. However, I want to handle situations where the wrong key or the the wrong bucket is specified. The situation where the wrong key is added to the request in erroneously handled in the code above.



      I also handled it using the code below, but did not end up getting any results:



      s3.getObject(options, function(err, data) {
      if (err) {
      return res.status(400).end(err);
      }
      }).createReadStream().pipe(res);




      The error that pops up is:



      4:15:32 PM - error: caught an unhandled exception! NoSuchKey: The specified key does not exist.
      NoSuchKey: The specified key does not exist.









      share|improve this question














      I am trying to get an image from S3 using this backend function below:



      exports.getImage = function (req, res) {
      let request = req.query;
      let key = request.key;
      let bucket = request.bucket;
      if (!key) {
      return res.status(400).end("missing key");
      }
      if (!bucket) {
      return res.status(400).end("missing bucket name");
      }
      let options = {
      Bucket: bucket,
      Key: key
      };

      res.setHeader('Content-Type', content_map['jpg']);

      let nimage = null;

      try {
      nimage = await s3.getObject(options).createReadStream().pipe(res);
      }
      catch (err) {
      console.log(err);
      }
      };


      As one can see, there are measures against the lack of a key or a bucket within the request, a status 400 is sent back. However, I want to handle situations where the wrong key or the the wrong bucket is specified. The situation where the wrong key is added to the request in erroneously handled in the code above.



      I also handled it using the code below, but did not end up getting any results:



      s3.getObject(options, function(err, data) {
      if (err) {
      return res.status(400).end(err);
      }
      }).createReadStream().pipe(res);




      The error that pops up is:



      4:15:32 PM - error: caught an unhandled exception! NoSuchKey: The specified key does not exist.
      NoSuchKey: The specified key does not exist.






      javascript node.js amazon-s3






      share|improve this question













      share|improve this question











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      share|improve this question










      asked Nov 20 '18 at 0:52









      Sharan DuggiralaSharan Duggirala

      85721238




      85721238
























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