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parseroutingtable.go
74 lines (69 loc) · 1.75 KB
/
parseroutingtable.go
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/*
* Copyright (c) 2002-2020 "Neo4j,"
* Neo4j Sweden AB [http://neo4j.com]
*
* This file is part of Neo4j.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package bolt
import (
"github.com/neo4j/neo4j-go-driver/v4/neo4j/db"
)
// Parses a record assumed to contain a routing table into common db API routing table struct
// Returns nil if error while parsing
func parseRoutingTableRecord(rec *db.Record) *db.RoutingTable {
ttl, ok := rec.Values[0].(int64)
if !ok {
return nil
}
listOfX, ok := rec.Values[1].([]interface{})
if !ok {
return nil
}
table := &db.RoutingTable{
TimeToLive: int(ttl),
}
for _, x := range listOfX {
// Each x should be a map consisting of addresses and the role
m, ok := x.(map[string]interface{})
if !ok {
return nil
}
addressesX, ok := m["addresses"].([]interface{})
if !ok {
return nil
}
addresses := make([]string, len(addressesX))
for i, addrX := range addressesX {
addr, ok := addrX.(string)
if !ok {
return nil
}
addresses[i] = addr
}
role, ok := m["role"].(string)
if !ok {
return nil
}
switch role {
case "READ":
table.Readers = addresses
case "WRITE":
table.Writers = addresses
case "ROUTE":
table.Routers = addresses
}
}
return table
}