Crypto.com Chain Indexing Service

Crypto.com Chain Indexing Service (chain-indexing) is a service to index all publicly available data on Crypto.com chain and persist structured information into storage.

Right now it supports Postgres database and provides RESTful API as query interface.

1. Build

1.1 Build using Docker (Not working yet)

Using Docker is the easiest way to build chain-indexing. The Docker image contains /app/chain-indexing Compiled chain-indexing binary /app/migrate Program to perform migration

docker build -o chain-indexing .

1.2 Build manually

Prerequisite

• Go compiler

make all

2. How to Run

2.1 Prerequisite

• Crypto.com Chain full node
• Postgres Database

2.2 Configuration file

A sample configuration is available under config/config.sample.toml.

Copy it, update configuration based on your setup and rename it as config/config.toml.

Note: Postgres database password is not available in config.toml nor command option. You must provide it as environment variable DB_PASSWORD on start.

2.3 Postgres Database

You can have your Postgres setup locally or remotely.

Run Postgres with Docker

WARNING: The docker files available under docker/ is intended only for development and testing purpose only. Never use them in production setup.

For a local test run. A docker-compose file with Postgres database and PgAdmin console is available via running:

docker-compose --file docker/docker-compose.development.yml up -d

This will start the following docker instances on your local network when you use default credentials:

Docker image	Port	Username	Password	Other Config	Mounted volume
Postgres	5432	postgres	postgres	Database Name = postgres; SSL = true	./pgdata-dev
PgAdmin	8080	pgadmin@localhost	pgadmin	N/A	N/A

2.4 Execute Database Migration

for DB_PASSWORD, never use common word such as "postgres" , "admin", "password", choose at least 16 characters including number, special character, capital letters even in testing environment. if you don't use strong password, pgmigrate will stop further processing

Docker (Not working yet)

docker run -it \
    --env DB_USERNAME=postgres \
    --env DB_PASSWORD=your_postgresql_password \
    --env DB_HOST=host.docker.internal \
    --env DB_PORT=5432 \
    --env DB_NAME=postgres \
    --env DB_SCHEMA=public \
    chain-indexing /app/migrate -- -verbose up

Manual Build

./pgmigrate.sh -- -verbose up

2.5 Run the Service

Docker (Not working yet)

docker run \
    -v `pwd`/config:/app/config --read-only \
    -p 28857:28857 \
    --env DB_PASSWORD=your_postgresql_password \
    chain-indexing /app/chain-indexing

Manual build

env DB_PASSWORD=your_postgresql_password ./chain-indexing

3. Test

./test.sh [--install-dependency] [--no-db] [--watch]

Providing --install-dependency will attempt to install test runner Ginkgo if it is not installed before.

4. Lint

Prerequisite

• golangci-lint

./lint.sh

5. Contributing

Please abide by the Code of Conduct in all interactions, and the contributing guidelines when submitting code.

6. License

Apache 2.0