def create_note(event, context):
# Request body is passed in as a JSON encoded string in 'event.body'
data = json.loads(event['body'])
parameter = {
# - 'userId': because users are authenticated via Cognito User Pool, we
# will use the User Pool sub (a UUID) of the authenticated user
# - 'noteId': a unique uuid
# - 'content': parsed from request body
# - 'attachment': parsed from request body
# - 'createdAt': current Unix timestamp
'TableName': 'notes',
'Item': {
'userId': {'S': str(event['requestContext']
['authorizer']
['claims']
['sub'])},
'noteId': {'S': str(uuid.uuid1())},
'content': {'S': str(data['content'])},
'attachment': {'S': str(data['attachment'])},
'createdAt': {'S': str(datetime.datetime.now())}
}
}
try:
DYNAMODB.put_item(**parameter)
body = parameter['Item']
return success(body)
except:
return failure(body)
def read_note(event, context):
parameter = {
'TableName': 'notes',
'Key': {
'userId': {'S': str(event['requestContext']
['authorizer']
['claims']
['sub'])},
'noteId': {'S': str(event['pathParameters']['id'])}
}
}
try:
result = DYNAMODB.get_item(**parameter)
if result['Item']:
return success(result['Item'])
else:
return failure({'status':False, 'error': 'Item not found'})
except:
return failure({'status':False, 'result': str(result)})
def read_all(event, context):
parameter = {
'TableName': 'notes',
'KeyConditionExpression': 'userId = :userId',
'ExpressionAttributeValues': {
':userId': {'S': str(event['requestContext']
['authorizer']
['claims']
['sub'])},
}
}
try:
result = DYNAMODB.query(**parameter)
if result['Items']:
return success(result['Items'])
else:
return failure({'status':False, 'error': 'Items not found'})
except:
return failure({'status':False, 'result': str(result)})
def delete_note(event, context):
parameter = {
'TableName': 'notes',
'Key': {
'userId': {'S': str(event['requestContext']
['authorizer']
['claims']
['sub'])},
'noteId': {'S': str(event['pathParameters']['id'])}
}
}
try:
DYNAMODB.delete_item(**parameter)
return success({'status':True})
except:
return failure({'status':False})
def update_note(event, context):
data = json.loads(event['body'])
parameter = {
'TableName': 'notes',
'Key': {
'userId': {'S': str(event['requestContext']
['authorizer']
['claims']
['sub'])},
'noteId': {'S': str(event['pathParameters']['id'])}
},
'UpdateExpression': 'SET content = :content, attachment = :attachment',
'ExpressionAttributeValues': {
':attachment': {'S': str(data['attachment'])} if data['attachment'] else None,
':content':{'S': str(data['content'])} if data['content'] else None
},
'ReturnValues': 'ALL_NEW'
}
try:
DYNAMODB.update_item(**parameter)
return success({'status':True})
except:
return failure({'status':False})