Twisted CQL Cassandra Client
Project description
Silverberg is a connection pooled, low-level client API for Cassandra CQL3 in Twisted python.
Named after the SSS Silverberg, which contained the computer Cassandra in an episode of Red Dwarf. Hey, all of the mythological references to Cassandra are all getting kinda old, no?
CQL3 is the new query language for Apache Cassandra 1.2 and onward. You can use it almost, but not quite, like SQL from a traditional relational database.
CQL3 reference
Installation
pip install silverberg
Prerequisites:
Python >= 2.7
Twisted
Thrift
Cassandra >= 1.2
Version History
- 0.1.12
Marshalling list correctly
- 0.1.11
Unmarshalling bool type
- 0.1.10
(vvoznesensky) Fixed authentication
- 0.1.9
(harii) Adding new timestamp type from Cassandra 2.0
- 0.1.8
Option to disconnect TCP connection when cancelling running query
- 0.1.7
- (jmahonin) Added support for unmarshalling Cassandra list types, double
types, and 32-bit signed int types (int, as opposed to varint)
fixed incompatibility with Python 2.6
- 0.1.6
Added disconnect() method to LoggingCQLClient
- 0.1.5
Different claim ids are logged when lock is not acquired
Removed logging of intermittent ‘Released lock’ messages that occurred when lock acquisition was tried again
Logging node info when connection to a node is lost in an unclean fashion
- 0.1.4
LoggingCQLClient logs cql failures as msg
null values unmarshal correctly now, no matter what the type, because null values will just always be unmarshalled as None
BasicLock takes optional log argument that if given logs when the lock was acquired and released along with time taken
- 0.1.3
RoundRobinCassandraCluster tries the next node in the cluster if it gets conection error
LoggingCQLClient class implemented that will log every CQL query, parameters and seconds taken to execute the query
Fixed bug in locks recipe where it didn’t get row in some rare scenarios
Fix marshalling of counter
Issue with how round robin cluster keeps track of rotating client
- 0.1.2
Fix marshalling of timestamps
- 0.1.1
Adding locks recipe for cassandra-based named locks
- 0.1.0
Changed API, cleaned up return valeus
- 0.0.x
Early development version
Running Tests and Lint
make test and make lint
License
Silverberg is distributed under the Apache license v2.0. See LICENSE.txt
Contributing
We love pull requests! Please:
Follow reasonable GitHub Pull Request practices
Make sure that your new contributed code contains reasonable unit tests
Unit tests and lint continue to pass
Project details
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