add support for dynamodb transact_get_items

This commit is contained in:
Tomoya Iwata 2019-01-13 17:38:38 +09:00 committed by Bert Blommers
parent 1aa99bb405
commit b74625db0c
3 changed files with 378 additions and 3 deletions

View File

@ -2237,7 +2237,7 @@
- [ ] verify_trust
## dynamodb
17% implemented
24% implemented
- [ ] batch_get_item
- [ ] batch_write_item
- [ ] create_backup
@ -2268,7 +2268,7 @@
- [ ] restore_table_to_point_in_time
- [X] scan
- [ ] tag_resource
- [ ] transact_get_items
- [X] transact_get_items
- [ ] transact_write_items
- [ ] untag_resource
- [ ] update_continuous_backups

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@ -10,6 +10,9 @@ from .exceptions import InvalidIndexNameError, InvalidUpdateExpression, ItemSize
from .models import dynamodb_backends, dynamo_json_dump
TRANSACTION_MAX_ITEMS = 10
def has_empty_keys_or_values(_dict):
if _dict == "":
return True
@ -828,3 +831,69 @@ class DynamoHandler(BaseResponse):
ttl_spec = self.dynamodb_backend.describe_ttl(name)
return json.dumps({"TimeToLiveDescription": ttl_spec})
def transact_get_items(self):
transact_items = self.body['TransactItems']
responses = list()
if len(transact_items) > TRANSACTION_MAX_ITEMS:
msg = "1 validation error detected: Value '["
err_list = list()
request_id = 268435456
for _ in transact_items:
request_id += 1
hex_request_id = format(request_id, 'x')
err_list.append('com.amazonaws.dynamodb.v20120810.TransactGetItem@%s' % hex_request_id)
msg += ', '.join(err_list)
msg += "'] at 'transactItems' failed to satisfy constraint: " \
"Member must have length less than or equal to %s" % TRANSACTION_MAX_ITEMS
return self.error('ValidationException', msg)
dedup_list = [i for n, i in enumerate(transact_items) if i not in transact_items[n + 1:]]
if len(transact_items) != len(dedup_list):
er = 'com.amazon.coral.validate#ValidationException'
return self.error(er, 'Transaction request cannot include multiple operations on one item')
ret_consumed_capacity = self.body.get('ReturnConsumedCapacity', 'NONE')
consumed_capacity = dict()
for transact_item in transact_items:
table_name = transact_item['Get']['TableName']
key = transact_item['Get']['Key']
try:
item = self.dynamodb_backend.get_item(table_name, key)
except ValueError as e:
er = 'com.amazonaws.dynamodb.v20111205#ResourceNotFoundException'
return self.error(er, 'Requested resource not found')
if not item:
continue
item_describe = item.describe_attrs(False)
responses.append(item_describe)
table_capacity = consumed_capacity.get(table_name, {})
table_capacity['TableName'] = table_name
capacity_units = table_capacity.get('CapacityUnits', 0) + 2.0
table_capacity['CapacityUnits'] = capacity_units
read_capacity_units = table_capacity.get('ReadCapacityUnits', 0) + 2.0
table_capacity['ReadCapacityUnits'] = read_capacity_units
consumed_capacity[table_name] = table_capacity
if ret_consumed_capacity == 'INDEXES':
table_capacity['Table'] = {
'CapacityUnits': capacity_units,
'ReadCapacityUnits': read_capacity_units
}
result = dict()
result.update({
'Responses': responses})
if ret_consumed_capacity != 'NONE':
result.update({
'ConsumedCapacity': [v for v in consumed_capacity.values()]
})
return dynamo_json_dump(result)

View File

@ -6,8 +6,9 @@ import six
import boto
import boto3
from boto3.dynamodb.conditions import Attr, Key
import sure # noqa
import re
import requests
import sure # noqa
from moto import mock_dynamodb2, mock_dynamodb2_deprecated
from moto.dynamodb2 import dynamodb_backend2, dynamodb_backends2
from boto.exception import JSONResponseError
@ -3792,3 +3793,308 @@ def test_query_catches_when_no_filters():
ex.exception.response["Error"]["Message"].should.equal(
"Either KeyConditions or QueryFilter should be present"
)
@mock_dynamodb2
def test_invalid_transact_get_items():
dynamodb = boto3.resource('dynamodb', region_name='us-east-1')
dynamodb.create_table(
TableName='test1',
KeySchema=[{'AttributeName': 'id', 'KeyType': 'HASH'}],
AttributeDefinitions=[{'AttributeName': 'id', 'AttributeType': 'S'}],
ProvisionedThroughput={'ReadCapacityUnits': 5, 'WriteCapacityUnits': 5}
)
table = dynamodb.Table('test1')
table.put_item(Item={
'id': '1',
'val': '1',
})
table.put_item(Item={
'id': '1',
'val': '2',
})
client = boto3.client('dynamodb', region_name='us-east-1')
with assert_raises(ClientError) as ex:
client.transact_get_items(TransactItems=[
{
'Get': {
'Key': {
'id': {'S': '1'},
},
'TableName': 'test1'
}
},
{
'Get': {
'Key': {
'id': {'S': '1'},
},
'TableName': 'test1'
}
}
])
ex.exception.response['Error']['Code'].should.equal('ValidationException')
ex.exception.response['ResponseMetadata']['HTTPStatusCode'].should.equal(400)
ex.exception.response['Error']['Message'].should.equal(
'Transaction request cannot include multiple operations on one item'
)
with assert_raises(ClientError) as ex:
client.transact_get_items(TransactItems=[
{'Get': {'Key': {'id': {'S': '1'}}, 'TableName': 'test1'}},
{'Get': {'Key': {'id': {'S': '1'}}, 'TableName': 'test1'}},
{'Get': {'Key': {'id': {'S': '1'}}, 'TableName': 'test1'}},
{'Get': {'Key': {'id': {'S': '1'}}, 'TableName': 'test1'}},
{'Get': {'Key': {'id': {'S': '1'}}, 'TableName': 'test1'}},
{'Get': {'Key': {'id': {'S': '1'}}, 'TableName': 'test1'}},
{'Get': {'Key': {'id': {'S': '1'}}, 'TableName': 'test1'}},
{'Get': {'Key': {'id': {'S': '1'}}, 'TableName': 'test1'}},
{'Get': {'Key': {'id': {'S': '1'}}, 'TableName': 'test1'}},
{'Get': {'Key': {'id': {'S': '1'}}, 'TableName': 'test1'}},
{'Get': {'Key': {'id': {'S': '1'}}, 'TableName': 'test1'}},
])
ex.exception.response['ResponseMetadata']['HTTPStatusCode'].should.equal(400)
ex.exception.response['Error']['Message'].should.match(
r'failed to satisfy constraint: Member must have length less than or equal to 10', re.I
)
with assert_raises(ClientError) as ex:
client.transact_get_items(TransactItems=[
{
'Get': {
'Key': {
'id': {'S': '1'},
},
'TableName': 'test1'
}
},
{
'Get': {
'Key': {
'id': {'S': '1'},
},
'TableName': 'non_exists_table'
}
}
])
ex.exception.response['Error']['Code'].should.equal('ResourceNotFoundException')
ex.exception.response['ResponseMetadata']['HTTPStatusCode'].should.equal(400)
ex.exception.response['Error']['Message'].should.equal(
'Requested resource not found'
)
@mock_dynamodb2
def test_valid_transact_get_items():
dynamodb = boto3.resource('dynamodb', region_name='us-east-1')
dynamodb.create_table(
TableName='test1',
KeySchema=[
{'AttributeName': 'id', 'KeyType': 'HASH'},
{'AttributeName': 'sort_key', 'KeyType': 'RANGE'},
],
AttributeDefinitions=[
{'AttributeName': 'id', 'AttributeType': 'S'},
{'AttributeName': 'sort_key', 'AttributeType': 'S'},
],
ProvisionedThroughput={'ReadCapacityUnits': 5, 'WriteCapacityUnits': 5}
)
table1 = dynamodb.Table('test1')
table1.put_item(Item={
'id': '1',
'sort_key': '1',
})
table1.put_item(Item={
'id': '1',
'sort_key': '2',
})
dynamodb.create_table(
TableName='test2',
KeySchema=[
{'AttributeName': 'id', 'KeyType': 'HASH'},
{'AttributeName': 'sort_key', 'KeyType': 'RANGE'},
],
AttributeDefinitions=[
{'AttributeName': 'id', 'AttributeType': 'S'},
{'AttributeName': 'sort_key', 'AttributeType': 'S'},
],
ProvisionedThroughput={'ReadCapacityUnits': 5, 'WriteCapacityUnits': 5}
)
table2 = dynamodb.Table('test2')
table2.put_item(Item={
'id': '1',
'sort_key': '1',
})
client = boto3.client('dynamodb', region_name='us-east-1')
res = client.transact_get_items(TransactItems=[
{
'Get': {
'Key': {
'id': {'S': '1'},
'sort_key': {'S': '1'}
},
'TableName': 'test1'
}
},
{
'Get': {
'Key': {
'id': {'S': 'non_exists_key'},
'sort_key': {'S': '2'}
},
'TableName': 'test1'
}
}
])
res['Responses'][0]['Item'].should.equal({
'id': {'S': '1'},
'sort_key': {'S': '1'}
})
len(res['Responses']).should.equal(1)
res = client.transact_get_items(TransactItems=[
{
'Get': {
'Key': {
'id': {'S': '1'},
'sort_key': {'S': '1'}
},
'TableName': 'test1'
}
},
{
'Get': {
'Key': {
'id': {'S': '1'},
'sort_key': {'S': '2'}
},
'TableName': 'test1'
}
},
{
'Get': {
'Key': {
'id': {'S': '1'},
'sort_key': {'S': '1'}
},
'TableName': 'test2'
}
},
])
res['Responses'][0]['Item'].should.equal({
'id': {'S': '1'},
'sort_key': {'S': '1'}
})
res['Responses'][1]['Item'].should.equal({
'id': {'S': '1'},
'sort_key': {'S': '2'}
})
res['Responses'][2]['Item'].should.equal({
'id': {'S': '1'},
'sort_key': {'S': '1'}
})
res = client.transact_get_items(TransactItems=[
{
'Get': {
'Key': {
'id': {'S': '1'},
'sort_key': {'S': '1'}
},
'TableName': 'test1'
}
},
{
'Get': {
'Key': {
'id': {'S': '1'},
'sort_key': {'S': '2'}
},
'TableName': 'test1'
}
},
{
'Get': {
'Key': {
'id': {'S': '1'},
'sort_key': {'S': '1'}
},
'TableName': 'test2'
}
},
], ReturnConsumedCapacity='TOTAL')
res['ConsumedCapacity'][0].should.equal({
'TableName': 'test1',
'CapacityUnits': 4.0,
'ReadCapacityUnits': 4.0
})
res['ConsumedCapacity'][1].should.equal({
'TableName': 'test2',
'CapacityUnits': 2.0,
'ReadCapacityUnits': 2.0
})
res = client.transact_get_items(TransactItems=[
{
'Get': {
'Key': {
'id': {'S': '1'},
'sort_key': {'S': '1'}
},
'TableName': 'test1'
}
},
{
'Get': {
'Key': {
'id': {'S': '1'},
'sort_key': {'S': '2'}
},
'TableName': 'test1'
}
},
{
'Get': {
'Key': {
'id': {'S': '1'},
'sort_key': {'S': '1'}
},
'TableName': 'test2'
}
},
], ReturnConsumedCapacity='INDEXES')
res['ConsumedCapacity'][0].should.equal({
'TableName': 'test1',
'CapacityUnits': 4.0,
'ReadCapacityUnits': 4.0,
'Table': {
'CapacityUnits': 4.0,
'ReadCapacityUnits': 4.0,
}
})
res['ConsumedCapacity'][1].should.equal({
'TableName': 'test2',
'CapacityUnits': 2.0,
'ReadCapacityUnits': 2.0,
'Table': {
'CapacityUnits': 2.0,
'ReadCapacityUnits': 2.0,
}
})