49 lines
1.1 KiB
Go
49 lines
1.1 KiB
Go
package main
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import (
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"fmt"
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"hash/crc32"
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"strconv"
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"gopkg.in/urfave/cli.v2"
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)
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var dotCmd = &cli.Command{
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Name: "dot",
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Usage: "generate dot graphs",
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Action: func(cctx *cli.Context) error {
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st, err := openStorage()
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if err != nil {
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return err
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}
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minH, err := strconv.ParseInt(cctx.Args().Get(0), 10, 32)
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tosee, err := strconv.ParseInt(cctx.Args().Get(1), 10, 32)
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maxH := minH + tosee
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res, err := st.db.Query("select block, parent, b.miner from block_parents inner join blocks b on block_parents.block = b.cid where b.height > ? and b.height < ?", minH, maxH)
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if err != nil {
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return err
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}
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fmt.Println("digraph D {")
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for res.Next() {
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var block,parent,miner string
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if err := res.Scan(&block, &parent, &miner); err != nil {
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return err
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}
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col := crc32.Checksum([]byte(miner), crc32.MakeTable(crc32.Castagnoli)) & 0x80808080 + 0x70707070
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fmt.Printf("%s [label = \"%s\", fillcolor = \"#%06x\", style=filled]\n%s -> %s\n", block, miner, col, block, parent)
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}
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if res.Err() != nil {
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return res.Err()
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}
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fmt.Println("}")
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return nil
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},
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} |