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author | Christopher Speller <crspeller@gmail.com> | 2017-05-17 16:51:25 -0400 |
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committer | GitHub <noreply@github.com> | 2017-05-17 16:51:25 -0400 |
commit | d103ed6ca97ca5a2669f6cf5fe4b3d2a9c945f26 (patch) | |
tree | dbde13123c6add150448f7b75753ac022d862475 /vendor/github.com/hashicorp/memberlist/delegate.go | |
parent | cd23b8139a9463b67e3096744321f6f4eb0ca40a (diff) | |
download | chat-d103ed6ca97ca5a2669f6cf5fe4b3d2a9c945f26.tar.gz chat-d103ed6ca97ca5a2669f6cf5fe4b3d2a9c945f26.tar.bz2 chat-d103ed6ca97ca5a2669f6cf5fe4b3d2a9c945f26.zip |
Upgrading server dependancies (#6431)
Diffstat (limited to 'vendor/github.com/hashicorp/memberlist/delegate.go')
-rw-r--r-- | vendor/github.com/hashicorp/memberlist/delegate.go | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/vendor/github.com/hashicorp/memberlist/delegate.go b/vendor/github.com/hashicorp/memberlist/delegate.go new file mode 100644 index 000000000..551548892 --- /dev/null +++ b/vendor/github.com/hashicorp/memberlist/delegate.go @@ -0,0 +1,37 @@ +package memberlist + +// Delegate is the interface that clients must implement if they want to hook +// into the gossip layer of Memberlist. All the methods must be thread-safe, +// as they can and generally will be called concurrently. +type Delegate interface { + // NodeMeta is used to retrieve meta-data about the current node + // when broadcasting an alive message. It's length is limited to + // the given byte size. This metadata is available in the Node structure. + NodeMeta(limit int) []byte + + // NotifyMsg is called when a user-data message is received. + // Care should be taken that this method does not block, since doing + // so would block the entire UDP packet receive loop. Additionally, the byte + // slice may be modified after the call returns, so it should be copied if needed + NotifyMsg([]byte) + + // GetBroadcasts is called when user data messages can be broadcast. + // It can return a list of buffers to send. Each buffer should assume an + // overhead as provided with a limit on the total byte size allowed. + // The total byte size of the resulting data to send must not exceed + // the limit. Care should be taken that this method does not block, + // since doing so would block the entire UDP packet receive loop. + GetBroadcasts(overhead, limit int) [][]byte + + // LocalState is used for a TCP Push/Pull. This is sent to + // the remote side in addition to the membership information. Any + // data can be sent here. See MergeRemoteState as well. The `join` + // boolean indicates this is for a join instead of a push/pull. + LocalState(join bool) []byte + + // MergeRemoteState is invoked after a TCP Push/Pull. This is the + // state received from the remote side and is the result of the + // remote side's LocalState call. The 'join' + // boolean indicates this is for a join instead of a push/pull. + MergeRemoteState(buf []byte, join bool) +} |