yaci
is a command-line tool that connects to a gRPC server and extracts blockchain data.
Off-chain indexing of block & transaction data.
- Go 1.23.1
- Docker & Docker Compose (optional)
- CosmosSDK >= 0.50 (chain to index)
- Ability to extract block and transaction chain data to PostgreSQL.
- Supports server reflection; no need to specify the proto file.
- (Nested)
Any
type are properly decoded. - Live monitoring of the blockchain.
- Batch extraction of data.
To install the yaci
tool, you need to have Go installed on your system. Then, you can use the following command to install yaci
:
go install github.com/liftedinit/yaci@latest
The yaci
binary will be installed in the $GOPATH/bin
directory.
The basic usage of the yaci tool is as follows:
yaci [command] [address] [flags]
extract
- Extracts blockchain data to various output format.version
- Prints the version of the tool.
-l
,--logLevel
- The log level (default: "info")'
Extract blockchain data and output it in the specified format.
The following flags are available for all extract
subcommand:
-t
,--block-time
- The time to wait between each block extraction (default: 2s)-s
,--start
- The starting block height to extract data from (default: 1)-e
,--stop
- The stopping block height to extract data from (default: 1)-k
,--insecure
- Skip TLS certificate verification (default: false)'--live
- Continuously extract data from the blockchain (default: false)--reindex
- Reindex the entire database from block 1 (default: false)'-r
,--max-retries
- The maximum number of retries to connect to the gRPC server (default: 3)-c
,--max-concurrency
- The maximum number of concurrent requests to the gRPC server (default: 100)
postgres
- Extracts blockchain data to a PostgreSQL database.
Extract blockchain data and output it to a PostgreSQL database.
The PostgreSQL database has the following schema:
erDiagram
"api.blocks" {
serial id PK
jsonb data
}
"api.transactions" {
varchar(64) id PK
jsonb data
}
Usage:
yaci extract postgres [address] [flags]
-p
,--postgres-conn
- The PostgreSQL connection string
yaci extract postgres localhost:9090 -p postgres://postgres:foobar@localhost/postgres -s 106000 -k --live -t 5
This command will connect to the gRPC server running on localhost:9090
, continuously extract data from block height 106000
and store the extracted data in the postgres
database. New blocks and transactions will be inserted into the database every 5 seconds.
The following PostgreSQL functions are available:
get_address_filtered_transactions_and_successful_proposals(address)
: Returns filtered transactions and successful proposals for a given address.
The yaci
tool parameters can be configured from the following sources
- Environment variables (prefixed with
YACI_
) - Configuration file (
config.yaml
,config.json
,config.toml
,config.hcl
,)config.env
- Command-line flags
The command-line flags have the highest priority, followed by the environment variables, and then the configuration file.
The environment variables are prefixed with YACI_
and are in uppercase. For example, the --logLevel
flag can be set using the YACI_LOGLEVEL
environment variable. Dash (-
) is replaced with underscore (_
). For example, the --block-time
flag can be set using the YACI_BLOCK_TIME
environment variable.
The configuration file is searched in the following order:
- The current working directory (
./
) - The user's home directory (
$HOME/.yaci
) - The system's configuration directory (
/etc/yaci
)
To run the demo, you need to have Docker installed on your system. Then, you can run the following command:
# Build and start the e2e environment
make docker-up
Wait for the e2e environment to start. Then, open a new browser tab and navigate to http://localhost:3000/blocks?order=id.desc to view the blocks and to http://localhost:3000/transactions to view the transactions.
Run
make docker-down
to stop the e2e environment.
To run the unit tests, you can use the following command:
make test
To run the end-to-end tests, you can use the following command:
make test-e2e
This project is licensed under the MIT License - see the LICENSE file for details.
This software is provided "as is", without warranty of any kind, express or implied, including but not limited to the warranties of merchantability, fitness for a particular purpose, and noninfringement. In no event shall the authors or copyright holders be liable for any claim, damages, or other liability, whether in an action of contract, tort, or otherwise, arising from, out of, or in connection with the software or the use or other dealings in the software.