2017-11-06 20:36:12 +00:00
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package history
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import (
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"github.com/8thlight/vulcanizedb/pkg/core"
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"github.com/8thlight/vulcanizedb/pkg/repositories"
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)
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2017-12-19 20:14:41 +00:00
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type Window struct {
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LowerBound int
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UpperBound int
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MaxBlockNumber int
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}
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func (window Window) Size() int {
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return int(window.UpperBound - window.LowerBound)
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}
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func PopulateMissingBlocks(blockchain core.Blockchain, repository repositories.Repository, startingBlockNumber int64) int {
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2018-01-02 18:39:55 +00:00
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lastBlock := blockchain.LastBlock().Int64()
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blockRange := repository.MissingBlockNumbers(startingBlockNumber, lastBlock-1)
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2017-12-19 20:14:41 +00:00
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updateBlockRange(blockchain, repository, blockRange)
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return len(blockRange)
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}
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func UpdateBlocksWindow(blockchain core.Blockchain, repository repositories.Repository, windowSize int) Window {
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2018-01-02 18:39:55 +00:00
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maxBlockNumber := blockchain.LastBlock().Int64()
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upperBound := maxBlockNumber - int64(1)
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2017-12-19 20:14:41 +00:00
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lowerBound := upperBound - int64(windowSize)
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blockRange := MakeRange(lowerBound, upperBound)
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updateBlockRange(blockchain, repository, blockRange)
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return Window{int(lowerBound), int(upperBound), int(maxBlockNumber)}
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}
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func updateBlockRange(blockchain core.Blockchain, repository repositories.Repository, blockNumbers []int64) int {
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2017-11-06 20:36:12 +00:00
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for _, blockNumber := range blockNumbers {
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block := blockchain.GetBlockByNumber(blockNumber)
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2017-12-19 20:14:41 +00:00
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repository.CreateOrUpdateBlock(block)
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2017-11-06 20:36:12 +00:00
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}
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return len(blockNumbers)
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}
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2017-12-19 20:14:41 +00:00
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func MakeRange(min, max int64) []int64 {
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a := make([]int64, max-min)
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for i := range a {
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a[i] = min + int64(i)
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}
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return a
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}
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