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topology.go
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topology.go
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// Copyright 2023 Blink Labs Software
//
// 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 ouroboros
import (
"encoding/json"
"io"
"os"
)
// TopologyConfig represents a Cardano node topology config
type TopologyConfig struct {
Producers []TopologyConfigLegacyProducer `json:"Producers"`
LocalRoots []TopologyConfigP2PLocalRoot `json:"localRoots"`
PublicRoots []TopologyConfigP2PPublicRoot `json:"publicRoots"`
UseLedgerAfterSlot uint64 `json:"useLedgerAfterSlot"`
}
type TopologyConfigLegacyProducer struct {
Address string `json:"addr"`
Port uint `json:"port"`
Valency uint `json:"valency"`
Continent string `json:"continent"`
State string `json:"state"`
}
type TopologyConfigP2PAccessPoint struct {
Address string `json:"address"`
Port uint `json:"port"`
}
type TopologyConfigP2PLocalRoot struct {
AccessPoints []TopologyConfigP2PAccessPoint `json:"accessPoints"`
Advertise bool `json:"advertise"`
Valency uint `json:"valency"`
}
type TopologyConfigP2PPublicRoot struct {
AccessPoints []TopologyConfigP2PAccessPoint `json:"accessPoints"`
Advertise bool `json:"advertise"`
Valency uint `json:"valency"`
}
func NewTopologyConfigFromFile(path string) (*TopologyConfig, error) {
dataFile, err := os.Open(path)
if err != nil {
return nil, err
}
return NewTopologyConfigFromReader(dataFile)
}
func NewTopologyConfigFromReader(r io.Reader) (*TopologyConfig, error) {
t := &TopologyConfig{}
data, err := io.ReadAll(r)
if err != nil {
return nil, err
}
if err := json.Unmarshal(data, t); err != nil {
return nil, err
}
return t, nil
}