Copyright 2015 Gravitational, Inc.

Package etcdbk implements Etcd powered backend.

Package legacy stores previous, unsupported versions of the backend and is used for migrations.

Package lite implements SQLite backend used for local persistent caches in proxies and nodes and for standalone auth service deployments.

Package test contains a backend acceptance test suite that is backend implementation independent each backend will use the suite to test itself.

AcquireLock grabs a lock that will be released automatically in TTL.

EarliestExpiry returns first of the otherwise returns empty.

Expiry converts ttl to expiry time, if ttl is 0 returns empty time.

Key joins parts into path separated by Separator, makes sure path always starts with Separator ("/").

NewCircularBuffer returns a new instance of circular buffer.

NewSanitizer returns a new Sanitizer.

RangeEnd returns end of the range for given key.

ReleaseLock forces lock release.

TTL returns TTL in duration units, rounds up to one second.

DefaultBufferSize is a default circular buffer size used by backends to fan out events.

DefaultEventsTTL is a default events TTL period.

DefaultLargeLimit is used to specify some very large limit when limit is not specified explicitly to prevent OOM.

DefaultPollStreamPeriod is a default event poll stream period.

Forever means that object TTL will not expire unless deleted.

NoLimit specifies no limits.

Separator is used as a separator between key parts.

CircularBuffer implements in-memory circular buffer of predefined size, that is capable of fan-out of the backend events.

Config is used for 'storage' config section.

Event is a event containing operation with item.

GetResult provides the result of GetRange request.

Item is a key value item.

Lease represents a lease on the item that can be used to extend item's TTL without updating its contents.

Sanitizer wraps a Backend implementation to make sure all values requested of the backend are whitelisted.

Watch specifies watcher parameters.

Backend implements abstraction over local or remote storage backend.

Batch implements some batch methods that are not mandatory for all interfaces, only the ones used in bulk operations.

Watcher returns watcher.

Items is a sortable list of backend items.

OpType specifies operation type.

Params type defines a flexible unified back-end configuration API.