Reputation: 1004
New to Boto SDK. I have the following unit test to check:
def test_dynamo():
conn = DynamoDBConnection(
host='localhost',
port=8000,
aws_secret_access_key='anything',
is_secure=False)
test_table = Table.create('table_for_test',schema=[HashKey('identifier',data_type=STRING)],connection=conn)
# test_table = Table('test',connection=conn)
unique_key = lskinesis_util.generate_unique_id()
time.sleep(5)
payload = {"identifier":unique_key,"stamp":"30/3/2014 14:39", "type":"testing-start","level":"info","source":"test-runner","user":{"id":5060342395,"first_name":"Alex"}}
encoder = json.JSONEncoder()
ejson = encoder.encode(payload)
test_table.put_item(data=ejson)
time.sleep(5)
from_db = test_table.get_item(identifier=unique_key)
assert from_db == ejson
Table.delete()
When I run it I get the following error:
E AttributeError: 'str' object has no attribute 'keys'
Can you please let me know what am I missing here? Thanks in advance.
Upvotes: 1
Views: 1432
Reputation: 1705
Dynamodb can store only plain dictionary:
As per the document,
Simply hand it a dictionary of data & it will create the item on the server side. This dictionary should be relatively flat (as you can nest in other dictionaries) & must contain the keys used in the schema.
In-order to store the following dict,
s = {'username':'anu', 'key':'1', 'value':'1', 'user_details':{'name':'Anu','age':'1'}}
d = base64.b64encode(json.dumps(s).encode('ascii'))
users.put_item(data={'key':'3','value':d})
ie, you can store base64 encoded data.
Upvotes: 1
Reputation: 1004
Ok I figured it out. There is no need to do the following:
encoder = json.JSONEncoder()
ejson = encoder.encode(payload)
However I got another problem now:
E TypeError: Unsupported type "<type 'dict'>" for value "{'first_name': 'Alex', 'id': 5060342395}"
Any idea why the object user in the above payload is being treated as a dictionary?
Thanks
Upvotes: 0