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v1.0.5 Latest Latest Go to latest Published: Oct 17, 2017 License: Apache-2.0 Imports: 0 Imported by: 0

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README ¶

The Data Broker (DB) abstraction

The CN-Infra Data Broker abstraction (see the diagram below) is based on two APIs:

The Broker API - used by app plugins to PULL (i.e. retrieve) data from a data store or PUSH (i.e. write) data into the data store. Data can be retrieved for a specific key or by running a query. Data can be written for a specific key. Multiple writes can be executed in a transaction.
The Watcher API - used by app plugins to WATCH data on a specified key. Watching means to monitor for data changes and be notified as soon as a change occurs.

The Broker & Watcher APIs abstract common database operations implemented by different databases (ETCD, Redis, Cassandra). Still, there are major differences between keyval-based & sql-based databases. Therefore the Broker & Watcher Go interfaces are defined in each package separately; while the method names for a given operation are the same, the method arguments are different.

Documentation ¶

Overview ¶

Package db is the parent package for the Data Broker client implementations for various key-value and SQL data stores.

Source Files ¶

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doc.go

Directories ¶

Path	Synopsis
keyval Package keyval provides an abstraction of a key-value data store and defines the keyval data broker API.	Package keyval provides an abstraction of a key-value data store and defines the keyval data broker API.
etcdv3 Package etcdv3 implements the key-value Data Broker client API for the etcdv3 key-value data store.	Package etcdv3 implements the key-value Data Broker client API for the etcdv3 key-value data store.
etcdv3/mocks Package mocks implements an embedded etcdv3 mock used in unit & integration tests.	Package mocks implements an embedded etcdv3 mock used in unit & integration tests.
kvproto Package kvproto provides a wrapper that simplifies the storing and retrieving of proto-modelled data into/from a key-value data store.	Package kvproto provides a wrapper that simplifies the storing and retrieving of proto-modelled data into/from a key-value data store.
plugin Package plugin contains a keyval plugin skeleton used in various key-value data store clients (e.g.	Package plugin contains a keyval plugin skeleton used in various key-value data store clients (e.g.
redis Package redis is the implementation of the key-value Data Broker client API for the Redis key-value data store.	Package redis is the implementation of the key-value Data Broker client API for the Redis key-value data store.
sql Package sql provides an abstraction of a data store that supports an SQL-like query language and defines the SQL data broker API.	Package sql provides an abstraction of a data store that supports an SQL-like query language and defines the SQL data broker API.
cassandra Package cassandra is the implementation of the SQL Data Broker client API for the Cassandra data store.	Package cassandra is the implementation of the SQL Data Broker client API for the Cassandra data store.

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