github.com/matrixorigin/matrixone@v1.2.0/pkg/queryservice/client/key_router.go (about)

     1  // Copyright 2021 - 2023 Matrix Origin
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package client
    16  
    17  import "github.com/matrixorigin/matrixone/pkg/pb/gossip"
    18  
    19  // KeyRouter is an interface manages the remote cache information.
    20  type KeyRouter[T comparable] interface {
    21  	// Target returns the remote cache server service address of
    22  	// the cache key. If the cache do not exist in any node, it
    23  	// returns empty string.
    24  	Target(k T) string
    25  
    26  	// AddItem pushes a item into a queue with a local
    27  	// cache server service address in the item. Gossip will take
    28  	// all the items and send them to other nodes in gossip cluster.
    29  	AddItem(item gossip.CommonItem)
    30  }