bds-xlm

Introduction

bds-xlm is one of the independent modules in open source project of block chain data service (BDS) - provides full node data service.

bds-xlm Based on the horizon-v0.22.1 version of stellar/go,bds-xlm redeveloped to support sending new block data directly to message middleware service of kafka to facilitate upstream services to subscribe and consume. Need to compile and install stellar/core v12.1.0 before running horizon.

Architecture

Environmental Deployment

Install BDS-XLM

Environment Initialization

build

Install steps

1. Compile

  dep ensure -v
  go build -v $GOPATH/src/github.com/stellar/go/services/horizon

2. Run full node and support sending messages to Kafka

  ./horizon --ingest --port <port> --kafka=true --kafka-proxy-host=<kafka host> --kafka-proxy-port=<kafka port> --kafka-topic=<kafka topic>

Install confluent and kafka

Install kafka

See kafka

Modify config/server.properties

• message.max.bytes=1048576000

Install confluent

see confluent

Unzip the confluent package and run Confluent REST Proxy

Modify /etc/kafka-rest/kafka-rest.properties

• max.request.size = 1048576000
• buffer.memory = 1048576000
• send.buffer.bytes = 1048576000

Install BDS

See BDS

Database

Database we now support SQL Server, PostgreSQL, you can choose one as a data storage method.

SQL Server

Buy JCS For SQL Server

PostgreSQL

Buy JCS For PostgreSQL

Install Grafana

See Grafana Official

New funtion

1. The new function of sending messages to Kafka is added（every time a new block is synchronized by full node, the data of the block is sent to kafka and the data structure is customized).
2. Sendblock and sendbatchblock are newly added as RPC interfaces to trigger full node to send data for a specific block.

Source Code Change History

bds-xlm

Contributing

Contributing guide

License

Apache License 2.0

Project Demonstration

Blockchain Data Service