66 lines
2.0 KiB
Go
66 lines
2.0 KiB
Go
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// Copyright 2018 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package simulation
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import (
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"github.com/ethereum/go-ethereum/node"
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"github.com/ethereum/go-ethereum/p2p/discover"
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"github.com/ethereum/go-ethereum/p2p/simulations/adapters"
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)
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// Service returns a single Service by name on a particular node
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// with provided id.
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func (s *Simulation) Service(name string, id discover.NodeID) node.Service {
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simNode, ok := s.Net.GetNode(id).Node.(*adapters.SimNode)
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if !ok {
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return nil
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}
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services := simNode.ServiceMap()
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if len(services) == 0 {
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return nil
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}
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return services[name]
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}
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// RandomService returns a single Service by name on a
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// randomly chosen node that is up.
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func (s *Simulation) RandomService(name string) node.Service {
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n := s.randomUpNode()
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if n == nil {
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return nil
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}
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return n.Service(name)
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}
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// Services returns all services with a provided name
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// from nodes that are up.
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func (s *Simulation) Services(name string) (services map[discover.NodeID]node.Service) {
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nodes := s.Net.GetNodes()
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services = make(map[discover.NodeID]node.Service)
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for _, node := range nodes {
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if !node.Up {
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continue
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}
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simNode, ok := node.Node.(*adapters.SimNode)
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if !ok {
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continue
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}
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services[node.ID()] = simNode.Service(name)
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}
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return services
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}
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