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Remove Deprecated Spec Logic (#1138)
* no more deprecated stuff * remove incentive functions * rem deprecated * remove funcs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,66 @@ | ||
| package blocks | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "time" | ||
|
|
||
| "github.com/ethereum/go-ethereum/common" | ||
| gethTypes "github.com/ethereum/go-ethereum/core/types" | ||
| "github.com/prysmaticlabs/prysm/beacon-chain/core/types" | ||
| ) | ||
|
|
||
| // IsValidBlock ensures that the block is compliant with the block processing validity conditions. | ||
| // Spec: | ||
| // For a beacon chain block, block, to be processed by a node, the following conditions must be met: | ||
| // The parent block with root block.parent_root has been processed and accepted. | ||
| // The node has processed its state up to slot, block.slot - 1. | ||
| // The Ethereum 1.0 block pointed to by the state.processed_pow_receipt_root has been processed and accepted. | ||
| // The node's local clock time is greater than or equal to state.genesis_time + block.slot * SLOT_DURATION. | ||
| func IsValidBlock( | ||
| ctx context.Context, | ||
| state *types.BeaconState, | ||
| block *types.Block, | ||
| enablePOWChain bool, | ||
| HasBlock func(hash [32]byte) bool, | ||
| GetPOWBlock func(ctx context.Context, hash common.Hash) (*gethTypes.Block, error), | ||
| genesisTime time.Time) error { | ||
|
|
||
| // Pre-Processing Condition 1: | ||
| // Check that the parent Block has been processed and saved. | ||
| parentBlock := HasBlock(block.ParentHash()) | ||
| if !parentBlock { | ||
| return fmt.Errorf("unprocessed parent block as it is not saved in the db: %#x", block.ParentHash()) | ||
| } | ||
|
|
||
| // Pre-Processing Condition 2: | ||
| // The state is updated up to block.slot -1. | ||
|
|
||
| if state.Slot() != block.SlotNumber()-1 { | ||
| return fmt.Errorf( | ||
| "block slot is not valid %d as it is supposed to be %d", block.SlotNumber(), state.Slot()+1) | ||
| } | ||
|
|
||
| if enablePOWChain { | ||
| powBlock, err := GetPOWBlock(ctx, state.ProcessedPowReceiptRootHash32()) | ||
| if err != nil { | ||
| return fmt.Errorf("unable to retrieve POW chain reference block %v", err) | ||
| } | ||
|
|
||
| // Pre-Processing Condition 3: | ||
| // The block pointed to by the state in state.processed_pow_receipt_root has | ||
| // been processed in the ETH 1.0 chain. | ||
| if powBlock == nil { | ||
| return fmt.Errorf("proof-of-Work chain reference in state does not exist %#x", state.ProcessedPowReceiptRootHash32()) | ||
| } | ||
| } | ||
|
|
||
| // Pre-Processing Condition 4: | ||
| // The node's local time is greater than or equal to | ||
| // state.genesis_time + block.slot * SLOT_DURATION. | ||
| if !block.IsSlotValid(genesisTime) { | ||
| return fmt.Errorf("slot of block is too high: %d", block.SlotNumber()) | ||
| } | ||
|
|
||
| return nil | ||
| } |
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