Golang glog.Fatalln函數代碼示例

func blockRecovery(ctx *cli.Context) {
	utils.CheckLegalese(ctx.GlobalString(utils.DataDirFlag.Name))

	arg := ctx.Args().First()
	if len(ctx.Args()) < 1 && len(arg) > 0 {
		glog.Fatal("recover requires block number or hash")
	}

	cfg := utils.MakeEthConfig(ClientIdentifier, nodeNameVersion, ctx)
	utils.CheckLegalese(cfg.DataDir)

	blockDb, err := ethdb.NewLDBDatabase(filepath.Join(cfg.DataDir, "blockchain"), cfg.DatabaseCache)
	if err != nil {
		glog.Fatalln("could not open db:", err)
	}

	var block *types.Block
	if arg[0] == '#' {
		block = core.GetBlockByNumber(blockDb, common.String2Big(arg[1:]).Uint64())
	} else {
		block = core.GetBlockByHash(blockDb, common.HexToHash(arg))
	}

	if block == nil {
		glog.Fatalln("block not found. Recovery failed")
	}

	err = core.WriteHead(blockDb, block)
	if err != nil {
		glog.Fatalln("block write err", err)
	}
	glog.Infof("Recovery succesful. New HEAD %x\n", block.Hash())
}

func runSuite(test, file string) {
	var tests []string

	if test == defaultTest {
		tests = allTests
	} else {
		tests = []string{test}
	}

	for _, curTest := range tests {
		glog.Infoln("runSuite", curTest, file)
		var err error
		var files []string
		if test == defaultTest {
			// check if we have an explicit directory mapping for the test
			if _, ok := testDirMapping[curTest]; ok {
				files, err = getFiles(filepath.Join(file, testDirMapping[curTest]))
			} else {
				// otherwise assume test name
				files, err = getFiles(filepath.Join(file, curTest))
			}
		} else {
			files, err = getFiles(file)
		}
		if err != nil {
			glog.Fatalln(err)
		}

		if len(files) == 0 {
			glog.Warningln("No files matched path")
		}
		for _, curFile := range files {
			// Skip blank entries
			if len(curFile) == 0 {
				continue
			}

			r, err := os.Open(curFile)
			if err != nil {
				glog.Fatalln(err)
			}
			defer r.Close()

			err = runTestWithReader(curTest, r)
			if err != nil {
				if continueOnError {
					glog.Errorln(err)
				} else {
					glog.Fatalln(err)
				}
			}

		}
	}
}

func runSuite(test, file string) {
	var tests []string

	if test == defaultTest {
		tests = allTests
	} else {
		tests = []string{test}
	}

	for _, curTest := range tests {
		glog.Infoln("runSuite", curTest, file)
		var err error
		var files []string
		if test == defaultTest {
			files, err = getFiles(filepath.Join(file, curTest))

		} else {
			files, err = getFiles(file)
		}
		if err != nil {
			glog.Fatalln(err)
		}

		if len(files) == 0 {
			glog.Warningln("No files matched path")
		}
		for _, curFile := range files {
			// Skip blank entries
			if len(curFile) == 0 {
				continue
			}

			r, err := os.Open(curFile)
			if err != nil {
				glog.Fatalln(err)
			}
			defer r.Close()

			err = runTestWithReader(curTest, r)
			if err != nil {
				if continueOnError {
					glog.Errorln(err)
				} else {
					glog.Fatalln(err)
				}
			}

		}
	}
}

// MakeChain creates a chain manager from set command line flags.
func MakeChain(ctx *cli.Context) (chain *core.BlockChain, chainDb ethdb.Database) {
	datadir := MustDataDir(ctx)
	cache := ctx.GlobalInt(CacheFlag.Name)

	var err error
	if chainDb, err = ethdb.NewLDBDatabase(filepath.Join(datadir, "chaindata"), cache); err != nil {
		Fatalf("Could not open database: %v", err)
	}
	if ctx.GlobalBool(OlympicFlag.Name) {
		_, err := core.WriteTestNetGenesisBlock(chainDb, 42)
		if err != nil {
			glog.Fatalln(err)
		}
	}

	eventMux := new(event.TypeMux)
	pow := ethash.New()
	//genesis := core.GenesisBlock(uint64(ctx.GlobalInt(GenesisNonceFlag.Name)), blockDB)
	chain, err = core.NewBlockChain(chainDb, pow, eventMux)
	if err != nil {
		Fatalf("Could not start chainmanager: %v", err)
	}

	proc := core.NewBlockProcessor(chainDb, pow, chain, eventMux)
	chain.SetProcessor(proc)
	return chain, chainDb
}

func setupApp(c *cli.Context) {
	flagTest := c.GlobalString(TestFlag.Name)
	flagFile := c.GlobalString(FileFlag.Name)
	continueOnError = c.GlobalBool(ContinueOnErrorFlag.Name)
	useStdIn := c.GlobalBool(ReadStdInFlag.Name)
	skipTests = strings.Split(c.GlobalString(SkipTestsFlag.Name), " ")

	if !useStdIn {
		runSuite(flagTest, flagFile)
	} else {
		if err := runTestWithReader(flagTest, os.Stdin); err != nil {
			glog.Fatalln(err)
		}

	}
}

func (bc *ChainManager) recover() bool {
	data, _ := bc.chainDb.Get([]byte("checkpoint"))
	if len(data) != 0 {
		block := bc.GetBlock(common.BytesToHash(data))
		if block != nil {
			err := bc.chainDb.Put([]byte("LastBlock"), block.Hash().Bytes())
			if err != nil {
				glog.Fatalln("db write err:", err)
			}

			bc.currentBlock = block
			bc.lastBlockHash = block.Hash()
			return true
		}
	}
	return false
}

// WriteBlock writes the block to the chain (or pending queue)
func (self *ChainManager) WriteBlock(block *types.Block, queued bool) (status writeStatus, err error) {
	self.wg.Add(1)
	defer self.wg.Done()

	cblock := self.currentBlock
	// Compare the TD of the last known block in the canonical chain to make sure it's greater.
	// At this point it's possible that a different chain (fork) becomes the new canonical chain.
	if block.Td.Cmp(self.Td()) > 0 {
		// chain fork
		if block.ParentHash() != cblock.Hash() {
			// during split we merge two different chains and create the new canonical chain
			err := self.merge(cblock, block)
			if err != nil {
				return NonStatTy, err
			}

			status = SplitStatTy
		}

		self.mu.Lock()
		self.setTotalDifficulty(block.Td)
		self.insert(block)
		self.mu.Unlock()

		self.setTransState(state.New(block.Root(), self.stateDb))
		self.txState.SetState(state.New(block.Root(), self.stateDb))

		status = CanonStatTy
	} else {
		status = SideStatTy
	}

	err = WriteBlock(self.blockDb, block)
	if err != nil {
		glog.Fatalln("db err:", err)
	}
	// Delete from future blocks
	self.futureBlocks.Remove(block.Hash())

	return
}

// MakeChain creates a chain manager from set command line flags.
func MakeChain(ctx *cli.Context) (chain *core.BlockChain, chainDb ethdb.Database) {
	var err error
	chainDb = MakeChainDatabase(ctx)

	if ctx.GlobalBool(OlympicFlag.Name) {
		_, err := core.WriteTestNetGenesisBlock(chainDb)
		if err != nil {
			glog.Fatalln(err)
		}
	}
	chainConfig := MustMakeChainConfigFromDb(ctx, chainDb)

	pow := pow.PoW(core.FakePow{})
	if !ctx.GlobalBool(FakePoWFlag.Name) {
		pow = ethash.New()
	}
	chain, err = core.NewBlockChain(chainDb, chainConfig, pow, new(event.TypeMux))
	if err != nil {
		Fatalf("Could not start chainmanager: %v", err)
	}
	return chain, chainDb
}

func (bc *ChainManager) ResetWithGenesisBlock(gb *types.Block) {
	bc.mu.Lock()
	defer bc.mu.Unlock()

	for block := bc.currentBlock; block != nil; block = bc.GetBlock(block.ParentHash()) {
		bc.removeBlock(block)
	}

	// Prepare the genesis block
	gb.Td = gb.Difficulty()
	bc.genesisBlock = gb

	err := WriteBlock(bc.chainDb, bc.genesisBlock)
	if err != nil {
		glog.Fatalln("db err:", err)
	}

	bc.insert(bc.genesisBlock)
	bc.currentBlock = bc.genesisBlock
	bc.makeCache()
	bc.td = gb.Difficulty()
}

func (bc *ChainManager) Reset() {
	bc.mu.Lock()
	defer bc.mu.Unlock()

	for block := bc.currentBlock; block != nil; block = bc.GetBlock(block.ParentHash()) {
		bc.removeBlock(block)
	}

	bc.cache, _ = lru.New(blockCacheLimit)

	// Prepare the genesis block
	err := WriteBlock(bc.chainDb, bc.genesisBlock)
	if err != nil {
		glog.Fatalln("db err:", err)
	}

	bc.insert(bc.genesisBlock)
	bc.currentBlock = bc.genesisBlock
	bc.makeCache()

	bc.setTotalDifficulty(common.Big("0"))
}

func main() {
	glog.SetToStderr(true)

	app := cli.NewApp()
	app.Name = "ethtest"
	app.Usage = "go-ethereum test interface"
	app.Action = setupApp
	app.Version = "0.2.0"
	app.Author = "go-ethereum team"

	app.Flags = []cli.Flag{
		TestFlag,
		FileFlag,
		ContinueOnErrorFlag,
		ReadStdInFlag,
		SkipTestsFlag,
	}

	if err := app.Run(os.Args); err != nil {
		glog.Fatalln(err)
	}

}