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services: add new service for fetching blocks from NeoFS
Close #3496 Signed-off-by: Ekaterina Pavlova <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| package server | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "os" | ||
| "path/filepath" | ||
|
|
||
| "github.com/nspcc-dev/neo-go/cli/cmdargs" | ||
| "github.com/nspcc-dev/neo-go/cli/options" | ||
| "github.com/nspcc-dev/neo-go/pkg/core/block" | ||
| "github.com/nspcc-dev/neo-go/pkg/io" | ||
| "github.com/urfave/cli/v2" | ||
| ) | ||
|
|
||
| func fetchBin(ctx *cli.Context) error { | ||
| var err error | ||
| if err := cmdargs.EnsureNone(ctx); err != nil { | ||
| return err | ||
| } | ||
| cfg, err := options.GetConfigFromContext(ctx) | ||
| if err != nil { | ||
| return cli.Exit(err, 1) | ||
| } | ||
| log, _, logCloser, err := options.HandleLoggingParams(ctx.Bool("debug"), cfg.ApplicationConfiguration) | ||
| if err != nil { | ||
| return cli.Exit(err, 1) | ||
| } | ||
| if logCloser != nil { | ||
| defer func() { _ = logCloser() }() | ||
| } | ||
| count := uint32(ctx.Uint("count")) | ||
| start := uint32(ctx.Uint("start")) | ||
|
|
||
| chain, prometheus, pprof, err := initBCWithMetrics(cfg, log) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer func() { | ||
| pprof.ShutDown() | ||
| prometheus.ShutDown() | ||
| chain.Close() | ||
| }() | ||
|
|
||
| chainCount := chain.BlockHeight() + 1 | ||
| if start+count > chainCount { | ||
| return cli.Exit(fmt.Errorf("chain is not that high (%d) to dump %d blocks starting from %d", chainCount-1, count, start), 1) | ||
| } | ||
| if count == 0 { | ||
| count = chainCount - start | ||
| } | ||
|
|
||
| testDir := ctx.String("out") | ||
| if _, err = os.Stat(testDir); os.IsNotExist(err) { | ||
| if err = os.MkdirAll(testDir, 0755); err != nil { | ||
| return cli.Exit(fmt.Sprintf("failed to create directory %s: %v", testDir, err), 1) | ||
| } | ||
| } | ||
|
|
||
| for i := start; i < start+count; i++ { | ||
| bh := chain.GetHeaderHash(i) | ||
| blk, err2 := chain.GetBlock(bh) | ||
| if err2 != nil { | ||
| return cli.Exit(fmt.Sprintf("failed to get block %d: %v", i, err), 1) | ||
| } | ||
| filePath := filepath.Join(testDir, fmt.Sprintf("block-%d.bin", i)) | ||
| if err = saveBlockToFile(blk, filePath); err != nil { | ||
| return cli.Exit(fmt.Sprintf("failed to save block %d to file: %v", i, err), 1) | ||
| } | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func saveBlockToFile(blk *block.Block, filePath string) error { | ||
| file, err := os.Create(filePath) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer file.Close() | ||
|
|
||
| writer := io.NewBinWriterFromIO(file) | ||
|
|
||
| var buf = io.NewBufBinWriter() | ||
| blk.EncodeBinary(buf.BinWriter) | ||
| bytes := buf.Bytes() | ||
|
|
||
| writer.WriteU32LE(uint32(len(bytes))) | ||
| blk.EncodeBinary(writer) | ||
| if writer.Err != nil { | ||
| return writer.Err | ||
| } | ||
| return nil | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| package config | ||
|
|
||
| import ( | ||
| "errors" | ||
| "time" | ||
|
|
||
| cid "github.com/nspcc-dev/neofs-sdk-go/container/id" | ||
| ) | ||
|
|
||
| // NeoFSBlockFetcher represents the configuration for the blockfetcher service. | ||
| type ( | ||
| NeoFSBlockFetcher struct { | ||
| Timeout time.Duration `yaml:"Timeout"` | ||
| ContainerID string `yaml:"ContainerID"` | ||
| Mode string `yaml:"Mode"` | ||
| BasicService `yaml:",inline"` | ||
| } | ||
| ) | ||
|
|
||
| func (f NeoFSBlockFetcher) Validate() error { | ||
| if f.Timeout == 0 { | ||
| return errors.New("timeout is not set") | ||
| } | ||
| if f.ContainerID == "" { | ||
| return errors.New("container ID is not set") | ||
| } | ||
| var containerID cid.ID | ||
| err := containerID.DecodeString(f.ContainerID) | ||
| if err != nil { | ||
| return errors.New("invalid container ID") | ||
| } | ||
| return nil | ||
| } | ||
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