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authorDeterminant <[email protected]>2020-07-30 14:18:44 -0400
committerDeterminant <[email protected]>2020-07-30 14:18:44 -0400
commit0444e66f640999c15496066637841efcc0433934 (patch)
treec19aec2dced2e9129c880c19c52ca0f87b3d62f6 /consensus/clique/api.go
parentcffa0954bbdb43821d1b71d00f99fb705cecd25b (diff)
parent1f49826de2bb8bb4f5f99f69fd2beb039b1172d9 (diff)
Merge branch 'multi-coin'
Diffstat (limited to 'consensus/clique/api.go')
-rw-r--r--consensus/clique/api.go119
1 files changed, 119 insertions, 0 deletions
diff --git a/consensus/clique/api.go b/consensus/clique/api.go
new file mode 100644
index 0000000..04e74eb
--- /dev/null
+++ b/consensus/clique/api.go
@@ -0,0 +1,119 @@
+// Copyright 2017 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package clique
+
+import (
+ "github.com/ava-labs/coreth/consensus"
+ "github.com/ava-labs/coreth/core/types"
+ "github.com/ava-labs/coreth/rpc"
+ "github.com/ava-labs/go-ethereum/common"
+)
+
+// API is a user facing RPC API to allow controlling the signer and voting
+// mechanisms of the proof-of-authority scheme.
+type API struct {
+ chain consensus.ChainReader
+ clique *Clique
+}
+
+// GetSnapshot retrieves the state snapshot at a given block.
+func (api *API) GetSnapshot(number *rpc.BlockNumber) (*Snapshot, error) {
+ // Retrieve the requested block number (or current if none requested)
+ var header *types.Header
+ if number == nil || *number == rpc.LatestBlockNumber {
+ header = api.chain.CurrentHeader()
+ } else {
+ header = api.chain.GetHeaderByNumber(uint64(number.Int64()))
+ }
+ // Ensure we have an actually valid block and return its snapshot
+ if header == nil {
+ return nil, errUnknownBlock
+ }
+ return api.clique.snapshot(api.chain, header.Number.Uint64(), header.Hash(), nil)
+}
+
+// GetSnapshotAtHash retrieves the state snapshot at a given block.
+func (api *API) GetSnapshotAtHash(hash common.Hash) (*Snapshot, error) {
+ header := api.chain.GetHeaderByHash(hash)
+ if header == nil {
+ return nil, errUnknownBlock
+ }
+ return api.clique.snapshot(api.chain, header.Number.Uint64(), header.Hash(), nil)
+}
+
+// GetSigners retrieves the list of authorized signers at the specified block.
+func (api *API) GetSigners(number *rpc.BlockNumber) ([]common.Address, error) {
+ // Retrieve the requested block number (or current if none requested)
+ var header *types.Header
+ if number == nil || *number == rpc.LatestBlockNumber {
+ header = api.chain.CurrentHeader()
+ } else {
+ header = api.chain.GetHeaderByNumber(uint64(number.Int64()))
+ }
+ // Ensure we have an actually valid block and return the signers from its snapshot
+ if header == nil {
+ return nil, errUnknownBlock
+ }
+ snap, err := api.clique.snapshot(api.chain, header.Number.Uint64(), header.Hash(), nil)
+ if err != nil {
+ return nil, err
+ }
+ return snap.signers(), nil
+}
+
+// GetSignersAtHash retrieves the list of authorized signers at the specified block.
+func (api *API) GetSignersAtHash(hash common.Hash) ([]common.Address, error) {
+ header := api.chain.GetHeaderByHash(hash)
+ if header == nil {
+ return nil, errUnknownBlock
+ }
+ snap, err := api.clique.snapshot(api.chain, header.Number.Uint64(), header.Hash(), nil)
+ if err != nil {
+ return nil, err
+ }
+ return snap.signers(), nil
+}
+
+// Proposals returns the current proposals the node tries to uphold and vote on.
+func (api *API) Proposals() map[common.Address]bool {
+ api.clique.lock.RLock()
+ defer api.clique.lock.RUnlock()
+
+ proposals := make(map[common.Address]bool)
+ for address, auth := range api.clique.proposals {
+ proposals[address] = auth
+ }
+ return proposals
+}
+
+// Propose injects a new authorization proposal that the signer will attempt to
+// push through.
+func (api *API) Propose(address common.Address, auth bool) {
+ api.clique.lock.Lock()
+ defer api.clique.lock.Unlock()
+
+ api.clique.proposals[address] = auth
+}
+
+// Discard drops a currently running proposal, stopping the signer from casting
+// further votes (either for or against).
+func (api *API) Discard(address common.Address) {
+ api.clique.lock.Lock()
+ defer api.clique.lock.Unlock()
+
+ delete(api.clique.proposals, address)
+}