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add rpc poller for light blocks + --dev flag
* added `tools poll-rpc-blocks` command to launch an RPC-based poller that acts as a firehose extractor node, printing base64-encoded protobuf blocks to stdout (used by the 'dev' node-type)
* added `--dev` flag to the `start` command to simplify running a local firehose+substreams stack from a development node (ex: Hardhat).
* This flag overrides the `--reader-node-path`, instead pointing to the fireeth binary itself.
* This flag overrides the `--reader-node-type`, setting it to `dev` instead of `geth`.
This node type has the following default `reader-node-arguments`: `tools poll-rpc-blocks http://localhost:8545 0`
* It also removes `node` from the list of default apps- Loading branch information
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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| // Copyright 2021 dfuse Platform Inc. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package dev | ||
|
|
||
| import ( | ||
| "archive/tar" | ||
| "context" | ||
| "fmt" | ||
| "io" | ||
| "io/ioutil" | ||
| "os" | ||
| "os/exec" | ||
| "path/filepath" | ||
| "time" | ||
|
|
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| "github.com/streamingfast/dstore" | ||
| "go.uber.org/zap" | ||
| ) | ||
|
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| // GenesisBootstrapper needs to write genesis file, static node file, then run a command like 'geth init' | ||
| type GenesisBootstrapper struct { | ||
| dataDir string | ||
| genesisFileURL string | ||
| cmdArgs []string | ||
| nodePath string | ||
| // staticNodesFilepath string | ||
| logger *zap.Logger | ||
| } | ||
|
|
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| func NewGenesisBootstrapper(dataDir string, genesisFileURL string, nodePath string, cmdArgs []string, logger *zap.Logger) *GenesisBootstrapper { | ||
| return &GenesisBootstrapper{ | ||
| dataDir: dataDir, | ||
| genesisFileURL: genesisFileURL, | ||
| nodePath: nodePath, | ||
| cmdArgs: cmdArgs, | ||
| logger: logger, | ||
| } | ||
| } | ||
|
|
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| func downloadDstoreObject(url string, destpath string) error { | ||
| ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second) | ||
| defer cancel() | ||
|
|
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| reader, _, _, err := dstore.OpenObject(ctx, url) | ||
| if err != nil { | ||
| return fmt.Errorf("cannot get file from store: %w", err) | ||
| } | ||
| defer reader.Close() | ||
| data, err := ioutil.ReadAll(reader) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
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| return ioutil.WriteFile(destpath, data, 0644) | ||
| } | ||
|
|
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| func (b *GenesisBootstrapper) Bootstrap() error { | ||
| if b.genesisFileURL == "" || isBootstrapped(b.dataDir, b.logger) { | ||
| return nil | ||
| } | ||
|
|
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| genesisFilePath := filepath.Join(b.dataDir, "genesis.json") | ||
|
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| b.logger.Info("running bootstrap sequence", zap.String("data_dir", b.dataDir), zap.String("genesis_file_path", genesisFilePath)) | ||
| if err := os.MkdirAll(b.dataDir, 0755); err != nil { | ||
| return fmt.Errorf("cannot create folder %s to bootstrap node: %w", b.dataDir, err) | ||
| } | ||
|
|
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| if !fileExists(genesisFilePath) { | ||
| b.logger.Info("fetching genesis file", zap.String("source_url", b.genesisFileURL)) | ||
| if err := downloadDstoreObject(b.genesisFileURL, genesisFilePath); err != nil { | ||
| return err | ||
| } | ||
| } | ||
|
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| cmd := exec.Command(b.nodePath, b.cmdArgs...) | ||
| b.logger.Info("running node init command (creating genesis block from genesis.json)", zap.Stringer("cmd", cmd)) | ||
| if output, err := runCmd(cmd); err != nil { | ||
| return fmt.Errorf("failed to init node (output %s): %w", output, err) | ||
| } | ||
|
|
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| return nil | ||
| } | ||
|
|
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| func NewTarballBootstrapper( | ||
| url string, | ||
| dataDir string, | ||
| logger *zap.Logger, | ||
| ) *TarballBootstrapper { | ||
| return &TarballBootstrapper{ | ||
| url: url, | ||
| dataDir: dataDir, | ||
| logger: logger, | ||
| } | ||
| } | ||
|
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| type TarballBootstrapper struct { | ||
| url string | ||
| dataDir string | ||
| logger *zap.Logger | ||
| } | ||
|
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| func isBootstrapped(dataDir string, logger *zap.Logger) bool { | ||
| var foundCURRENT bool | ||
| err := filepath.Walk(dataDir, | ||
| func(path string, info os.FileInfo, err error) error { | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if info.IsDir() { | ||
| return nil | ||
| } | ||
| if filepath.Base(path) == "CURRENT" { | ||
| foundCURRENT = true | ||
| return io.EOF | ||
| } | ||
| return nil | ||
| }) | ||
| if err != nil && !os.IsNotExist(err) && err != io.EOF { | ||
| logger.Warn("error while checking for bootstrapped status", zap.Error(err)) | ||
| } | ||
|
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| return foundCURRENT | ||
| } | ||
|
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| func (b *TarballBootstrapper) isBootstrapped() bool { | ||
| return isBootstrapped(b.dataDir, b.logger) | ||
| } | ||
|
|
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| func (b *TarballBootstrapper) Bootstrap() error { | ||
| if b.isBootstrapped() { | ||
| return nil | ||
| } | ||
|
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| b.logger.Info("bootstrapping geth chain data from pre-built data", zap.String("bootstrap_data_url", b.url)) | ||
|
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| ctx, cancel := context.WithTimeout(context.Background(), 30*time.Minute) | ||
| defer cancel() | ||
|
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| reader, _, _, err := dstore.OpenObject(ctx, b.url, dstore.Compression("zstd")) | ||
| if err != nil { | ||
| return fmt.Errorf("cannot get snapshot from gstore: %w", err) | ||
| } | ||
| defer reader.Close() | ||
|
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| b.createChainData(reader) | ||
| return nil | ||
| } | ||
|
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| func (b *TarballBootstrapper) createChainData(reader io.Reader) error { | ||
| err := os.MkdirAll(b.dataDir, os.ModePerm) | ||
| if err != nil { | ||
| return fmt.Errorf("unable to create blocks log file: %w", err) | ||
| } | ||
|
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| b.logger.Info("extracting bootstrapping data into node data directory", zap.String("data_dir", b.dataDir)) | ||
| tr := tar.NewReader(reader) | ||
| for { | ||
| header, err := tr.Next() | ||
| if err != nil { | ||
| if err == io.EOF { | ||
| return nil | ||
| } | ||
|
|
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| return err | ||
| } | ||
|
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| path := filepath.Join(b.dataDir, header.Name) | ||
| b.logger.Debug("about to write content of entry", zap.String("name", header.Name), zap.String("path", path), zap.Bool("is_dir", header.FileInfo().IsDir())) | ||
| if header.FileInfo().IsDir() { | ||
| err = os.MkdirAll(path, os.ModePerm) | ||
| if err != nil { | ||
| return fmt.Errorf("unable to create directory: %w", err) | ||
| } | ||
|
|
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| continue | ||
| } | ||
|
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| file, err := os.Create(path) | ||
| if err != nil { | ||
| return fmt.Errorf("unable to create file: %w", err) | ||
| } | ||
|
|
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| if _, err := io.Copy(file, tr); err != nil { | ||
| file.Close() | ||
| return err | ||
| } | ||
| file.Close() | ||
| } | ||
| } | ||
|
|
||
| func dirExists(filename string) bool { | ||
| info, err := os.Stat(filename) | ||
| if os.IsNotExist(err) { | ||
| return false | ||
| } | ||
| return info.IsDir() | ||
| } | ||
|
|
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| func fileExists(filename string) bool { | ||
| info, err := os.Stat(filename) | ||
| if os.IsNotExist(err) { | ||
| return false | ||
| } | ||
| return !info.IsDir() | ||
| } | ||
| func runCmd(cmd *exec.Cmd) (string, error) { | ||
| // This runs (and wait) the command, combines both stdout and stderr in a single stream and return everything | ||
| out, err := cmd.CombinedOutput() | ||
| if err == nil { | ||
| return "", nil | ||
| } | ||
|
|
||
| return string(out), err | ||
| } |
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