I am trying to get_item from a table in dynamodb.
def read_table_item(table_name, pk_name, pk_value):
"""
Return item read by primary key.
"""
table = dynamodb.Table(table_name)
response = table.get_item( Key={pk_name: pk_value})
return response
print (read_table_item(table_name,pk_name="_id",pk_value={"S":str(1)}))
The error I get is
"botocore.exceptions.ClientError: An error occurred (ValidationException) when calling the GetItem operation: The provided key element does not match the schema"
It will be helpful if somebody review the above piece and help us rectify the issue.
Thanks
it seems to me what ever you are passing to pk_name is not in the DynamodbSchema. See following for more informaton.
Incorrect dynamo db key mapping
Related
I am working on a lambda function that gets called from API Gateway and updates information in dynamoDB. I have half of this working really dynamically, and im a little stuck on updating. Here is what im working with:
dynamoDB table with a partition key of guild_id
My dummy json code im using:
{
"guild_id": "126",
"guild_name": "Posted Guild",
"guild_premium": "true",
"guild_prefix": "z!"
}
Finally the lambda code:
import json
import boto3
def lambda_handler(event, context):
client = boto3.resource("dynamodb")
table = client.Table("guildtable")
itemData = json.loads(event['body'])
guild = table.get_item(Key={'guild_id':itemData['guild_id']})
#If Guild Exists, update
if 'Item' in guild:
table.update_item(Key=itemData)
responseObject = {}
responseObject['statusCode'] = 200
responseObject['headers'] = {}
responseObject['headers']['Content-Type'] = 'application/json'
responseObject['body'] = json.dumps('Updated Guild!')
return responseObject
#New Guild, Insert Guild
table.put_item(Item=itemData)
responseObject = {}
responseObject['statusCode'] = 200
responseObject['headers'] = {}
responseObject['headers']['Content-Type'] = 'application/json'
responseObject['body'] = json.dumps('Inserted Guild!')
return responseObject
The insert part is working wonderfully, How would I accomplish a similar approach with update item? Im wanting this to be as dynamic as possible so I can throw any json code (within reason) at it and it stores it in the database. I am wanting my update method to take into account adding fields down the road and handling those
I get the follow error:
Lambda execution failed with status 200 due to customer function error: An error occurred (ValidationException) when calling the UpdateItem operation: The provided key element does not match the schema.
A "The provided key element does not match the schema" error means something is wrong with Key (= primary key). Your schema's primary key is guild_id: string. Non-key attributes belong in the AttributeUpdate parameter. See the docs.
Your itemdata appears to include non-key attributes. Also ensure guild_id is a string "123" and not a number type 123.
goodKey={"guild_id": "123"}
table.update_item(Key=goodKey, UpdateExpression="SET ...")
The docs have a full update_item example.
I want to filter data from Dynamodb using a column which saves datetime values (like '2021-06-01T06:00:00.255Z'). I tried with the condition --filter-expression "Datecolumn BETWEEN 2021-06-01T12:00:00.000Z AND 2021-06-30T12:00:00.000Z" in aws dynamodb scan query. I'm getting the following error message :
Error Message:
An error occurred (ValidationException) when calling the Scan operation: Invalid FilterExpression: Syntax error; token: "2021", near: "BETWEEN 2021-"
Could someone please help me with the query?
I am trying to write data using batch_writer into DynamoDB using Lambda function. I am using "A1" as the partition key for my DynamoDB and when I try to pass the following Json input it works well.
{
"A1":"001",
"A2":{
"B1":"100",
"B2":"200",
"B3":"300"
}
}
When I try to send the following request I get an error.
{
"A1":{
"B1":"100",
"B2":"200",
"B3":"300"
}
}
Error -
"errorMessage": "An error occurred (ValidationException) when calling the BatchWriteItem operation: The provided key element does not match the schema"
Is it possible to write the data into DynamoDB using lambda function for this data and what should I change in my code to do that?
My code -
def lambda_handler(event, context):
with table.batch_writer() as batch:
batch.put_item(event)
return {"code":200, "message":"Data added success"}
It's hard to say without seeing the table definition, but my bet is that "A1" is the primary key of type string. If you try setting it to a map, it will fail.
I have table already and I want to add a new attribute to that table.
I am trying to do that with the update_item functionality of dynamDB.
use case: Bid table holds details on the bid of the product. The user accepts the bid, once the bid is accepted, have to add a few attributes to that record like the user information. Not sure if it is the right way or should I have a new table for this.
pratition key is : Pickup,
sort key is : DropOff
A Demo example that I am trying currently
currently trying to alter the same table and facing the error.
import json
import boto3
def lambda_handler(event, context):
dynamo_client = boto3.resource('dynamodb')
users = dynamo_client.Table('LoadsandBids')
item = event['body']
print("Fuirst")
users.update_item(
Key={
'Pickup': event['body']['Pickup'],
'DropOff' : event['body']['DropOff']
},
UpdateExpression='SET #attr1 = :val1',
ExpressionAttributeNames={'#attr1': 'new_field'},
ExpressionAttributeValues={':val1': event['body']['new']},
ReturnValues='UPDATED_NEW'
)
return {
'statusCode': 200,
'body': json.dumps('Hello from Lambda!')
}
getting an error:
"An error occurred (ValidationException) when calling the UpdateItem operation: The provided key element does not match the schema",
Could anyone help me out of this and also suggest it I my approach is good or not?
I have created a lambda java project to get items from dynamoDB.But I am getting error while accessing.
Code that I wrote:
dbClient = AmazonDynamoDBClientBuilder.standard().withRegion(Regions.US_EAST_1).build();
DynamoDB dynamoDB = new DynamoDB(dbClient);
Table table = dynamoDB.getTable("TokenSystem");
Item item = table.getItem("TokenId", 123456);
return item.toJSON();
Error getting in lambda console:
com.amazonaws.services.dynamodbv2.model.AmazonDynamoDBException: The provided key element does not match the schema (Service: AmazonDynamoDBv2; Status Code: 400; Error Code: ValidationException; Request ID: 9OJVLPJHV011KLGKI20Q8QN2FNVV4KQNSO5AEMVJF66Q9ASUAAJG)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1658)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1322)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1072)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:745)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:719)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:701)
at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$500(AmazonHttpClient.java:669)
at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:651)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:515)
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.doInvoke(AmazonDynamoDBClient.java:3609)
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.invoke(AmazonDynamoDBClient.java:3578)
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.invoke(AmazonDynamoDBClient.java:3567)
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.executeGetItem(AmazonDynamoDBClient.java:1869)
at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.getItem(AmazonDynamoDBClient.java:1840)
at com.amazonaws.services.dynamodbv2.document.internal.GetItemImpl.doLoadItem(GetItemImpl.java:77)
at com.amazonaws.services.dynamodbv2.document.internal.GetItemImpl.getItemOutcome(GetItemImpl.java:40)
at com.amazonaws.services.dynamodbv2.document.internal.GetItemImpl.getItemOutcome(GetItemImpl.java:99)
at com.amazonaws.services.dynamodbv2.document.internal.GetItemImpl.getItem(GetItemImpl.java:111)
at com.amazonaws.services.dynamodbv2.document.Table.getItem(Table.java:624)
at com.amazonaws.lambda.service.TokenValidatorService.retrieveItemFromDB(TokenValidatorService.java:82)
at com.amazonaws.lambda.service.TokenValidatorService.checkToken(TokenValidatorService.java:42)
In DynamoDB I have a table with the SAME NAME and REGION.I am using the AWS package com.amazonaws.services.dynamodbv2 to do all the operations.Can anyone help me to solve the issue.
The provided key element does not match the schema
Make sure you provide the right key Name