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cmd/ethereum: add makedag command for testing #522

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Mar 18, 2015
+21 −0
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cmd/ethereum: add makedag command for testing #522

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21 changes: 21 additions & 0 deletions cmd/ethereum/main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,7 @@ import (
"time"

"github.com/codegangsta/cli"
"github.com/ethereum/ethash"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
Expand All @@ -54,6 +55,17 @@ func init() {
app.HideVersion = true // we have a command to print the version
app.Commands = []cli.Command{
blocktestCmd,
{
Action: makedag,
Name: "makedag",
Usage: "generate ethash dag (for testing)",
Description: `
The makedag command generates an ethash DAG in /tmp/dag.

This command exists to support the system testing project.
Regular users do not need to execute it.
`,
},
{
Action: version,
Name: "version",
Expand Down Expand Up @@ -318,6 +330,15 @@ func dump(ctx *cli.Context) {
}
}

func makedag(ctx *cli.Context) {
chain, _, _ := utils.GetChain(ctx)
pow := ethash.New(chain)
fmt.Println("making cache")
pow.UpdateCache(true)
fmt.Println("making DAG")
pow.UpdateDAG()
}

func version(c *cli.Context) {
fmt.Printf(`%v
Version: %v
Expand Down