indexer for the XRP blockchain
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Verifier XRP Indexer

This is an indexer for the XRP blockchain. It is using the Verifier Indexer Framework (https://github.com/flare-foundation/verifier-indexer-framework). It collects Blocks and Transactions from the XRP blockchain. The indexer is configured via a configuration file - see config.example.toml for an example configuration.

Installation

To install the indexer, you need to have Go installed to the latest version - currently 1.25.

Now you may install the indexer by running the following command:

go install github.com/flare-foundation/verifier-xrp-indexer/cmd/indexer@latest

This will install the indexer command globally.

Running the indexer

Prerequisites

Database

To run the indexer a PostgreSQL database needs to be deployed. An example database is provided as docker image in tests directory which can be used with

docker compose up postgresdb

from the tests repository.

Config file

Provide a .toml config file with the following fields (mostly self explanatory)

[db]
username = "username" # can be specified with env DB_USERNAME
password = "password" # can be specified with env DB_PASSWORD
db_name = "flare_xrp_indexer"
port = 5432
drop_table_at_start = false
history_drop = 3600 # delete all historic data in database older than this value, in seconds
history_drop_frequency = 600 # frequency of history drops, in seconds

[indexer]
confirmations = 1 # number of confirmed blocks before the data is included in the DB
max_block_range = 100 # size of a batch to be repeatedly queried and saved in a dataset
max_concurrency = 10 # number of concurrent processes querying data from the RPC node
start_block_number = 780000

[blockchain]
url = "https://s.altnet.rippletest.net:51234"

[timeout]
request_timeout_millis = 3000 # timeout requests to the chain and the dataset
backoff_max_elapsed_time_seconds = 300 # maximum time between retries

[logger]
level = "DEBUG"
file = "logs/xrp_indexer.log"
console = true

Running the code

Assuming that the indexer was installed globally you can use indexer command to run it. Alternatively you can use go run ./cmd/indexer to build and run the binary.

By default the indexer will look for a configuration file named config.toml in the current working directory. You can specify a different configuration file by passing --config <filepath> when running the indexer. For example:

go run cmd/indexer/main.go --config tests/config_test.toml

### Running the tests

The indexer tests depend on a local rippled instance running in standalone mode.
The easiest way to create this is to use the `docker-compose.yaml` file provided:

docker compose up -d
go test ./...
docker compose down