307 lines
9.9 KiB
Markdown
307 lines
9.9 KiB
Markdown
# eth-statediff-service
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[](https://goreportcard.com/report/github.com/vulcanize/eth-statediff-service)
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>> standalone statediffing service on top of LevelDB
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Purpose:
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Stand up a statediffing service directly on top of a go-ethereum LevelDB instance.
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This service can serve historical state data over the same rpc interface as
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[statediffing geth](https://github.com/cerc-io/go-ethereum) without needing to run a full node.
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## Setup
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Build the binary:
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```bash
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make build
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```
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## Configuration
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An example config file:
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```toml
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[leveldb]
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# LevelDB access mode <local | remote>
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mode = "local" # LVLDB_MODE
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# in local mode
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# LevelDB paths
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path = "/Users/user/Library/Ethereum/geth/chaindata" # LVLDB_PATH
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ancient = "/Users/user/Library/Ethereum/geth/chaindata/ancient" # LVLDB_ANCIENT
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# in remote mode
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# URL for leveldb-ethdb-rpc endpoint
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url = "http://127.0.0.1:8082/" # LVLDB_URL
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[server]
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ipcPath = ".ipc" # SERVICE_IPC_PATH
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httpPath = "127.0.0.1:8545" # SERVICE_HTTP_PATH
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[statediff]
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prerun = true # STATEDIFF_PRERUN
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serviceWorkers = 1 # STATEDIFF_SERVICE_WORKERS
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workerQueueSize = 1024 # STATEDIFF_WORKER_QUEUE_SIZE
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trieWorkers = 4 # STATEDIFF_TRIE_WORKERS
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[prerun]
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only = false # PRERUN_ONLY
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parallel = true # PRERUN_PARALLEL
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# to perform prerun in a specific range (optional)
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start = 0 # PRERUN_RANGE_START
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stop = 100 # PRERUN_RANGE_STOP
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# to perform prerun over multiple ranges (optional)
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ranges = [
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[101, 1000]
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]
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# statediffing params for prerun
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[prerun.params]
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includeBlock = true # PRERUN_INCLUDE_BLOCK
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includeReceipts = true # PRERUN_INCLUDE_RECEIPTS
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includeTD = true # PRERUN_INCLUDE_TD
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includeCode = true # PRERUN_INCLUDE_CODE
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watchedAddresses = []
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[log]
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file = "" # LOG_FILE_PATH
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level = "info" # LOG_LEVEL
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[database]
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# output type <postgres | file | dump>
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type = "postgres"
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# with postgres type
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# db credentials
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name = "vulcanize_test" # DATABASE_NAME
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hostname = "localhost" # DATABASE_HOSTNAME
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port = 5432 # DATABASE_PORT
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user = "vulcanize" # DATABASE_USER
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password = "..." # DATABASE_PASSWORD
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driver = "sqlx" # DATABASE_DRIVER_TYPE <sqlx | pgx>
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# with file type
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# file mode <sql | csv>
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fileMode = "csv" # DATABASE_FILE_MODE
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# with SQL file mode
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filePath = "" # DATABASE_FILE_PATH
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# with CSV file mode
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fileCsvDir = "output_dir" # DATABASE_FILE_CSV_DIR
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# with dump type
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# <stdout | stderr | discard>
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dumpDestination = "" # DATABASE_DUMP_DST
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[cache]
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database = 1024 # DB_CACHE_SIZE_MB
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trie = 1024 # TRIE_CACHE_SIZE_MB
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[prom]
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# prometheus metrics
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metrics = true # PROM_METRICS
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http = true # PROM_HTTP
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httpAddr = "localhost" # PROM_HTTP_ADDR
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httpPort = "8889" # PROM_HTTP_PORT
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dbStats = true # PROM_DB_STATS
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[ethereum]
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# node info
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nodeID = "" # ETH_NODE_ID
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clientName = "eth-statediff-service" # ETH_CLIENT_NAME
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networkID = 1 # ETH_NETWORK_ID
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chainID = 1 # ETH_CHAIN_ID
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genesisBlock = "0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3" # ETH_GENESIS_BLOCK
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# path to custom chain config file (optional)
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# keep chainID same as that in chain config file
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chainConfig = "./chain.json" # ETH_CHAIN_CONFIG
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[debug]
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pprof = false # DEBUG_PPROF
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```
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### Local Setup
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* Create a chain config file `chain.json` according to chain config in genesis json file used by local geth.
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Example:
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```json
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{
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"chainId": 41337,
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"homesteadBlock": 0,
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"eip150Block": 0,
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"eip150Hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
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"eip155Block": 0,
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"eip158Block": 0,
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"byzantiumBlock": 0,
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"constantinopleBlock": 0,
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"petersburgBlock": 0,
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"istanbulBlock": 0,
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"clique": {
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"period": 5,
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"epoch": 30000
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}
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}
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```
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Provide the path to the above file in the config.
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## Usage
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* Create / update the config file (refer to example config above).
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### `serve`
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* To serve the statediff RPC API:
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```bash
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./eth-statediff-service serve --config=<config path>
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```
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Example:
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```bash
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./eth-statediff-service serve --config environments/config.toml
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```
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* Available RPC methods:
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* `statediff_stateTrieAt()`
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* `statediff_streamCodeAndCodeHash()`
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* `statediff_stateDiffAt()`
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* `statediff_writeStateDiffAt()`
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* `statediff_writeStateDiffsInRange()`
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Example:
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```bash
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curl -X POST -H 'Content-Type: application/json' --data '{"jsonrpc":"2.0","method":"statediff_writeStateDiffsInRange","params":['"$BEGIN"', '"$END"', {"intermediateStateNodes":true,"intermediateStorageNodes":true,"includeBlock":true,"includeReceipts":true,"includeTD":true,"includeCode":true}],"id":1}' "$HOST":"$PORT"
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```
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* Prerun:
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* The process can be configured locally with sets of ranges to process as a "prerun" to processing directed by the server endpoints.
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* This is done by turning "prerun" on in the config (`statediff.prerun = true`) and defining ranges and params in the
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`prerun` section of the config.
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* Set the range using `prerun.start` and `prerun.stop`. Use `prerun.ranges` if prerun on more than one range is required.
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* NOTE: Currently, `params.includeTD` must be set to / passed as `true`.
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## Monitoring
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* Enable metrics using config parameters `prom.metrics` and `prom.http`.
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* `eth-statediff-service` exposes following prometheus metrics at `/metrics` endpoint:
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* `ranges_queued`: Number of range requests currently queued.
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* `loaded_height`: The last block that was loaded for processing.
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* `processed_height`: The last block that was processed.
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* `stats.t_block_load`: Block loading time.
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* `stats.t_block_processing`: Block (header, uncles, txs, rcts, tx trie, rct trie) processing time.
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* `stats.t_state_processing`: State (state trie, storage tries, and code) processing time.
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* `stats.t_postgres_tx_commit`: Postgres tx commit time.
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* `http.count`: HTTP request count.
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* `http.duration`: HTTP request duration.
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* `ipc.count`: Unix socket connection count.
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## Tests
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* Run unit tests:
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```bash
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make test
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```
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## Import output data in file mode into a database
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* When `eth-statediff-service` is run in file mode (`database.type`) the output is in form of a SQL file or multiple CSV files.
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### SQL
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* Assuming the output files are located in host's `./output_dir` directory.
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* Create a directory to store post-processed output:
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```bash
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mkdir -p output_dir/processed_output
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```
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* (Optional) Get row counts in the output:
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```bash
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wc -l output_dir/statediff.sql > output_stats.txt
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```
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* De-duplicate data:
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```bash
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sort -u output_dir/statediff.sql -o output_dir/processed_output/deduped-statediff.sql
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```
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* Copy over the post-processed output files to the DB server (say in `/output_dir`).
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* Run the following to import data:
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```bash
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psql -U <DATABASE_USER> -h <DATABASE_HOSTNAME> -p <DATABASE_PORT> <DATABASE_NAME> --set ON_ERROR_STOP=on -f /output_dir/processed_output/deduped-statediff.sql
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```
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### CSV
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* Create an env file with the required variables. Refer [.sample.env](./scripts/.sample.env).
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* (Optional) Get row counts in the output:
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```bash
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./scripts/count-lines.sh <ENV_FILE_PATH>
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```
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* De-duplicate data:
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```bash
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./scripts/dedup.sh <ENV_FILE_PATH>
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```
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* Perform column checks:
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```bash
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./scripts/check-columns.sh <ENV_FILE_PATH>
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```
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Check the output logs for any rows detected with unexpected number of columns.
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Example:
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```bash
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# log
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eth.header_cids
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Start: Wednesday 21 September 2022 06:00:38 PM IST
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Time taken: 00:00:05
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End: Wednesday 21 September 2022 06:00:43 PM IST
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Total bad rows: 1 ./check-columns/eth.header_cids.txt
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# bad row output
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# line number, num. of columns, data
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23 17 22,xxxxxx,0x07f5ea5c94aa8dea60b28f6b6315d92f2b6d78ca4b74ea409adeb191b5a114f2,0x5918487321aa57dd0c50977856c6231e7c4ee79e95b694c7c8830227d77a1ecc,bagiacgzaa726uxeuvkg6uyfsr5vwgfozf4vw26gkjn2ouqe232yzdnnbctza,45,geth,0,0xad8fa8df61b98dbda7acd6ca76d5ce4cbba663d5f608cc940957adcdb94cee8d,0xc621412320a20b4aaff5363bdf063b9d13e394ef82e55689ab703aae5db08e26,0x71ec1c7d81269ce115be81c81f13e1cc2601c292a7f20440a77257ecfdc69940,0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347,\x2000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000000,1658408419,/blocks/DMQAP5PKLSKKVDPKMCZI623DCXMS6K3NPDFEW5HKICNN5MMRWWQRJ4Q,1,0x0000000000000000000000000000000000000000
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```
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* Import data using `timescaledb-parallel-copy`:
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(requires [`timescaledb-parallel-copy`](https://github.com/timescale/timescaledb-parallel-copy) installation; readily comes with TimescaleDB docker image)
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```bash
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./scripts/timescaledb-import.sh <ENV_FILE_PATH>
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```
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* NOTE: `COPY` command on CSVs inserts empty strings as `NULL` in the DB. Passing `FORCE_NOT_NULL <COLUMN_NAME>` forces it to insert empty strings instead. This is required to maintain compatibility of the imported statediff data with the data generated in `postgres` mode. Reference: https://www.postgresql.org/docs/14/sql-copy.html
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### Stats
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The binary includes a `stats` command which reports stats for the offline or remote levelDB.
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At this time, the only stat supported is to return the latest/highest block height and hash found the levelDB, this is
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useful for determining what the upper limit is for a standalone statediffing process on a given levelDB.
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`./eth-statediff-service stats --config={path to toml config file}`
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