74b12e35bf
* network/retrieve: initial commit * network: import dependencies from stream package branch * network/retrieve: address pr comments * network/retrieve: fix pr comments * network/retrieve: create logger for peer * network: address pr comments * network/retrieve: lint * network/retrieve: prevent forever loop * network/retrieve: address pr comments * network/retrieve: fix linter * network/retrieve: pr comments * network/retrieval: pr comments
102 lines
2.9 KiB
Go
102 lines
2.9 KiB
Go
// 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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"fmt"
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"github.com/ethereum/go-ethereum/p2p/enode"
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)
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// BucketKey is the type that should be used for keys in simulation buckets.
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type BucketKey string
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// NodeItem returns an item set in ServiceFunc function for a particular node.
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func (s *Simulation) NodeItem(id enode.ID, key interface{}) (value interface{}, ok bool) {
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s.mu.Lock()
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defer s.mu.Unlock()
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if _, ok := s.buckets[id]; !ok {
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return nil, false
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}
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return s.buckets[id].Load(key)
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}
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// MustNodeItem returns the item set in ServiceFunc for a particular node or panics in case
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// the item is not found
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func (s *Simulation) MustNodeItem(id enode.ID, key interface{}) (value interface{}) {
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s.mu.Lock()
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defer s.mu.Unlock()
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if _, ok := s.buckets[id]; !ok {
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e := fmt.Errorf("cannot find node id %s in bucket", id.String())
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panic(e)
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}
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if v, ok := s.buckets[id].Load(key); ok {
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return v
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} else {
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e := fmt.Errorf("cannot find key %v on node bucket", key)
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panic(e)
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}
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}
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// SetNodeItem sets a new item associated with the node with provided NodeID.
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// Buckets should be used to avoid managing separate simulation global state.
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func (s *Simulation) SetNodeItem(id enode.ID, key interface{}, value interface{}) {
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s.mu.Lock()
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defer s.mu.Unlock()
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s.buckets[id].Store(key, value)
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}
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// NodesItems returns a map of items from all nodes that are all set under the
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// same BucketKey.
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func (s *Simulation) NodesItems(key interface{}) (values map[enode.ID]interface{}) {
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s.mu.RLock()
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defer s.mu.RUnlock()
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ids := s.NodeIDs()
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values = make(map[enode.ID]interface{}, len(ids))
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for _, id := range ids {
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if _, ok := s.buckets[id]; !ok {
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continue
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}
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if v, ok := s.buckets[id].Load(key); ok {
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values[id] = v
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}
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}
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return values
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}
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// UpNodesItems returns a map of items with the same BucketKey from all nodes that are up.
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func (s *Simulation) UpNodesItems(key interface{}) (values map[enode.ID]interface{}) {
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s.mu.RLock()
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defer s.mu.RUnlock()
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ids := s.UpNodeIDs()
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values = make(map[enode.ID]interface{})
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for _, id := range ids {
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if _, ok := s.buckets[id]; !ok {
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continue
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}
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if v, ok := s.buckets[id].Load(key); ok {
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values[id] = v
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}
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}
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return values
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}
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