One or more parameter values were invalid: An AttributeValue may not contain an empty string
I'm trying to read A Single Row from AWS API Gateway on my DynamoDB.
The db structure looks like this:
DB, Please look
Okay and i have set the mapping templates as shown below:
Mapping Templates
Finally my Lambda code:
console.log('function starts');
const AWS = require('aws-sdk');
const docClient = new AWS.DynamoDB.DocumentClient({region: 'us-east-2'});
exports.handler = function(event, context, callback){
console.log('processing event: %j', event);
let scanningParameters = {
TableName: 'users',
Key: {
"userid": event.userid
},
Limit: 1 //maximum result of 1 items
};
//In dynamoDB scan looks through your entire table and fetches all data
docClient.get(scanningParameters, function(err,data){
if(err){
callback(err, null);
}else{
callback(null,data);
}
});
}
TEST TIME
However, using CURL to test my progress returns:
curl -X GET
mysite
-H 'Content-Type: application/json'
-d '{
“userid”: “some user id”
}'
But getting:
{"errorMessage":"One or more parameter values were invalid: An AttributeValue may not contain an empty string","errorType":"ValidationException","stackTrace":["Request.extractError (/var/runtime/node_modules/aws-sdk/lib/protocol/json.js:48:27)","Request.callListeners (/var/runtime/node_modules/aws-sdk/lib/sequential_executor.js:105:20)","Request.emit (/var/runtime/node_modules/aws-sdk/lib/sequential_executor.js:77:10)","Request.emit (/var/runtime/node_modules/aws-sdk/lib/request.js:683:14)","Request.transition (/var/runtime/node_modules/aws-sdk/lib/request.js:22:10)","AcceptorStateMachine.runTo (/var/runtime/node_modules/aws-sdk/lib/state_machine.js:14:12)","/var/runtime/node_modules/aws-sdk/lib/state_machine.js:26:10","Request. (/var/runtime/node_modules/aws-sdk/lib/request.js:38:9)","Request. (/var/runtime/node_modules/aws-sdk/lib/request.js:685:12)","Request.callListeners (/var/runtime/node_modules/aws-sdk/lib/sequential_executor.js:115:18)"]}
javascript amazon-web-services aws-lambda amazon-dynamodb aws-api-gateway
edited Dec 29 '18 at 13:25
Mark B
101k15157172
asked Dec 29 '18 at 8:29
rawand ahmadrawand ahmad
114
add a comment |
I'm trying to read A Single Row from AWS API Gateway on my DynamoDB.
The db structure looks like this:
DB, Please look
Okay and i have set the mapping templates as shown below:
Mapping Templates
Finally my Lambda code:
console.log('function starts');
const AWS = require('aws-sdk');
const docClient = new AWS.DynamoDB.DocumentClient({region: 'us-east-2'});
exports.handler = function(event, context, callback){
console.log('processing event: %j', event);
let scanningParameters = {
TableName: 'users',
Key: {
"userid": event.userid
},
Limit: 1 //maximum result of 1 items
};
//In dynamoDB scan looks through your entire table and fetches all data
docClient.get(scanningParameters, function(err,data){
if(err){
callback(err, null);
}else{
callback(null,data);
}
});
}
TEST TIME
However, using CURL to test my progress returns:
curl -X GET
mysite
-H 'Content-Type: application/json'
-d '{
“userid”: “some user id”
}'
But getting:
{"errorMessage":"One or more parameter values were invalid: An AttributeValue may not contain an empty string","errorType":"ValidationException","stackTrace":["Request.extractError (/var/runtime/node_modules/aws-sdk/lib/protocol/json.js:48:27)","Request.callListeners (/var/runtime/node_modules/aws-sdk/lib/sequential_executor.js:105:20)","Request.emit (/var/runtime/node_modules/aws-sdk/lib/sequential_executor.js:77:10)","Request.emit (/var/runtime/node_modules/aws-sdk/lib/request.js:683:14)","Request.transition (/var/runtime/node_modules/aws-sdk/lib/request.js:22:10)","AcceptorStateMachine.runTo (/var/runtime/node_modules/aws-sdk/lib/state_machine.js:14:12)","/var/runtime/node_modules/aws-sdk/lib/state_machine.js:26:10","Request. (/var/runtime/node_modules/aws-sdk/lib/request.js:38:9)","Request. (/var/runtime/node_modules/aws-sdk/lib/request.js:685:12)","Request.callListeners (/var/runtime/node_modules/aws-sdk/lib/sequential_executor.js:115:18)"]}
javascript amazon-web-services aws-lambda amazon-dynamodb aws-api-gateway
edited Dec 29 '18 at 13:25
Mark B
101k15157172
asked Dec 29 '18 at 8:29
rawand ahmadrawand ahmad
114
1
The first thing you need to do is add logging to print outevent.useridto make sure it is actually getting mapped to the value you think it is. Also, why are you using an inefficient full table scan instead of a query? Isuseridnot the primary key of the table?
– Mark B
Dec 29 '18 at 13:28
add a comment |
I'm trying to read A Single Row from AWS API Gateway on my DynamoDB.
The db structure looks like this:
DB, Please look
Okay and i have set the mapping templates as shown below:
Mapping Templates
Finally my Lambda code:
console.log('function starts');
const AWS = require('aws-sdk');
const docClient = new AWS.DynamoDB.DocumentClient({region: 'us-east-2'});
exports.handler = function(event, context, callback){
console.log('processing event: %j', event);
let scanningParameters = {
TableName: 'users',
Key: {
"userid": event.userid
},
Limit: 1 //maximum result of 1 items
};
//In dynamoDB scan looks through your entire table and fetches all data
docClient.get(scanningParameters, function(err,data){
if(err){
callback(err, null);
}else{
callback(null,data);
}
});
}
TEST TIME
However, using CURL to test my progress returns:
curl -X GET
mysite
-H 'Content-Type: application/json'
-d '{
“userid”: “some user id”
}'
But getting:
{"errorMessage":"One or more parameter values were invalid: An AttributeValue may not contain an empty string","errorType":"ValidationException","stackTrace":["Request.extractError (/var/runtime/node_modules/aws-sdk/lib/protocol/json.js:48:27)","Request.callListeners (/var/runtime/node_modules/aws-sdk/lib/sequential_executor.js:105:20)","Request.emit (/var/runtime/node_modules/aws-sdk/lib/sequential_executor.js:77:10)","Request.emit (/var/runtime/node_modules/aws-sdk/lib/request.js:683:14)","Request.transition (/var/runtime/node_modules/aws-sdk/lib/request.js:22:10)","AcceptorStateMachine.runTo (/var/runtime/node_modules/aws-sdk/lib/state_machine.js:14:12)","/var/runtime/node_modules/aws-sdk/lib/state_machine.js:26:10","Request. (/var/runtime/node_modules/aws-sdk/lib/request.js:38:9)","Request. (/var/runtime/node_modules/aws-sdk/lib/request.js:685:12)","Request.callListeners (/var/runtime/node_modules/aws-sdk/lib/sequential_executor.js:115:18)"]}
javascript amazon-web-services aws-lambda amazon-dynamodb aws-api-gateway
edited Dec 29 '18 at 13:25
Mark B
101k15157172
asked Dec 29 '18 at 8:29
rawand ahmadrawand ahmad
114
I'm trying to read A Single Row from AWS API Gateway on my DynamoDB.
The db structure looks like this:
DB, Please look
Okay and i have set the mapping templates as shown below:
Mapping Templates
Finally my Lambda code:
console.log('function starts');
const AWS = require('aws-sdk');
const docClient = new AWS.DynamoDB.DocumentClient({region: 'us-east-2'});
exports.handler = function(event, context, callback){
console.log('processing event: %j', event);
let scanningParameters = {
TableName: 'users',
Key: {
"userid": event.userid
},
Limit: 1 //maximum result of 1 items
};
//In dynamoDB scan looks through your entire table and fetches all data
docClient.get(scanningParameters, function(err,data){
if(err){
callback(err, null);
}else{
callback(null,data);
}
});
}
TEST TIME
However, using CURL to test my progress returns:
curl -X GET
mysite
-H 'Content-Type: application/json'
-d '{
“userid”: “some user id”
}'
But getting:
{"errorMessage":"One or more parameter values were invalid: An AttributeValue may not contain an empty string","errorType":"ValidationException","stackTrace":["Request.extractError (/var/runtime/node_modules/aws-sdk/lib/protocol/json.js:48:27)","Request.callListeners (/var/runtime/node_modules/aws-sdk/lib/sequential_executor.js:105:20)","Request.emit (/var/runtime/node_modules/aws-sdk/lib/sequential_executor.js:77:10)","Request.emit (/var/runtime/node_modules/aws-sdk/lib/request.js:683:14)","Request.transition (/var/runtime/node_modules/aws-sdk/lib/request.js:22:10)","AcceptorStateMachine.runTo (/var/runtime/node_modules/aws-sdk/lib/state_machine.js:14:12)","/var/runtime/node_modules/aws-sdk/lib/state_machine.js:26:10","Request. (/var/runtime/node_modules/aws-sdk/lib/request.js:38:9)","Request. (/var/runtime/node_modules/aws-sdk/lib/request.js:685:12)","Request.callListeners (/var/runtime/node_modules/aws-sdk/lib/sequential_executor.js:115:18)"]}
javascript amazon-web-services aws-lambda amazon-dynamodb aws-api-gateway
javascript amazon-web-services aws-lambda amazon-dynamodb aws-api-gateway
edited Dec 29 '18 at 13:25
Mark B
101k15157172
asked Dec 29 '18 at 8:29
rawand ahmadrawand ahmad
114
edited Dec 29 '18 at 13:25
Mark B
101k15157172
asked Dec 29 '18 at 8:29
rawand ahmadrawand ahmad
114
edited Dec 29 '18 at 13:25
Mark B
101k15157172
edited Dec 29 '18 at 13:25
Mark B
101k15157172
edited Dec 29 '18 at 13:25
Mark B
101k15157172
101k15157172
asked Dec 29 '18 at 8:29
rawand ahmadrawand ahmad
114
asked Dec 29 '18 at 8:29
rawand ahmadrawand ahmad
114
asked Dec 29 '18 at 8:29
rawand ahmadrawand ahmad
114
114
1
The first thing you need to do is add logging to print outevent.useridto make sure it is actually getting mapped to the value you think it is. Also, why are you using an inefficient full table scan instead of a query? Isuseridnot the primary key of the table?
– Mark B
Dec 29 '18 at 13:28
add a comment |
1
The first thing you need to do is add logging to print outevent.useridto make sure it is actually getting mapped to the value you think it is. Also, why are you using an inefficient full table scan instead of a query? Isuseridnot the primary key of the table?
– Mark B
Dec 29 '18 at 13:28
1
1
The first thing you need to do is add logging to print out
event.userid to make sure it is actually getting mapped to the value you think it is. Also, why are you using an inefficient full table scan instead of a query? Is userid not the primary key of the table?– Mark B
Dec 29 '18 at 13:28
The first thing you need to do is add logging to print out
event.userid to make sure it is actually getting mapped to the value you think it is. Also, why are you using an inefficient full table scan instead of a query? Is userid not the primary key of the table?– Mark B
Dec 29 '18 at 13:28
add a comment |
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1
The first thing you need to do is add logging to print out
event.useridto make sure it is actually getting mapped to the value you think it is. Also, why are you using an inefficient full table scan instead of a query? Isuseridnot the primary key of the table?– Mark B
Dec 29 '18 at 13:28