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Merge pull request #1193 from tgerring/hotbackup

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Improve export command
This commit is contained in:
Jeffrey Wilcke
2015-06-08 16:32:38 -07:00
parent 81ceac1b96 4ab0cedf42
commit 0f1cdfa53a
3 changed files with 55 additions and 5 deletions
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17
core/chain_manager.go
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@ -347,13 +347,24 @@ func (bc *ChainManager) ResetWithGenesisBlock(gb *types.Block) {
// Export writes the active chain to the given writer.
func (self *ChainManager) Export(w io.Writer) error {
if err := self.ExportN(w, uint64(0), self.currentBlock.NumberU64()); err != nil {
return err
}
return nil
}
// ExportN writes a subset of the active chain to the given writer.
func (self *ChainManager) ExportN(w io.Writer, first uint64, last uint64) error {
self.mu.RLock()
defer self.mu.RUnlock()
glog.V(logger.Info).Infof("exporting %v blocks...\n", self.currentBlock.Header().Number)
last := self.currentBlock.NumberU64()
if first > last {
return fmt.Errorf("export failed: first (%d) is greater than last (%d)", first, last)
}
for nr := uint64(1); nr <= last; nr++ {
glog.V(logger.Info).Infof("exporting %d blocks...\n", last-first+1)
for nr := first; nr <= last; nr++ {
block := self.GetBlockByNumber(nr)
if block == nil {
return fmt.Errorf("export failed on #%d: not found", nr)