greatly simplifies Messenger, to the point of making it basically shell around
MessageBroker. Next stesp are to make the receiving of internal messages more
well-defined and behind an interface, remove/merge Messenger and MessageBroker,
and have the implementations of MessageBroker in separate packages.
Primary message interface is the MessageBroker which is an attribute of the Messenger.
MessageBroker implementations:
- Gossip (memberlist)
- Broadcast (uses HTTP, received by existing Handler)
- Static (no-ops)
Changes CacheSize from `int` to `uint32` for consistency with protobuf.
Removes unnecessary dependencies in glide:
- `github.com/aws/aws-sdk-go`
- `golang.org/x/net` (although this gets included by memberlist)
TODO:
- [ ] Add tests around the Messenger and MessageBroker objects.
- [ ] Refactor CreateSliceMessage to work with views.
- [ ] Support propogation of meta data on PATCH calls.
fixing some issues from last rebase
Modified the gossip implementation to optionally send messages directly (instead of over gossip).
Added support for local and remote NodeState, as well as function to merge remote into local state.
Refactored Protobuf models to include `DBMeta` and `FrameMeta` as well as support for NodeState.
Changes Gossiper to NodeSet.
Adds StaticNodeSet (for testing) and GossipNodeSet (for memberlist) implementations.
Changes NodeSet interface to return a pilosa-specific generic instead of `NodeSet interface`.
Removes NumMembers from interface (which is specific to memberlist).
Implements a Messenger interface with which to send inter-node messages via NodeSet.
The Pilosa implementation occurs in the GossipNodeSet.
Implements the Messenger as an object on Server, Handler, and Index.
Uses HealthStatus constants.
Removes commented-out code.
for gossip, make sure to bind to both host and port, and advertise those as well
adjust messenger to work with the db schema logic
add dependencies: hashicorp/memberlist, golang.org/x/sync
add dependency: golang.org/x/net
Uses `errgroup` to handle errors from broadcast messages.
Marshals message one time instead of once for every node.
Adds error handling for some errors that were being swallowed.
Databases and frames now require explicit creation and have the
option of setting row & column labels. If no labels are provided
then the default `id` and `profileID` labels are used.
This commit adds a `Closing` channel to the `IndexSyncer` and the
`FragmentSyncer` that is periodically checked during execution.
If the channel is closed then an in-progress sync is immediately
stopped.
