Coinbase-pro-feed-kotlin - Kotlin Coinbase Pro Level 2 Order Book Feed

Related tags

App coinbase-pro-feed-kotlin
Overview

Kotlin Coinbase Pro Level 2 Order Book Feed

Quick start

Depending on your OS run the corresponding CLI script with the target instrument as input:

Mac/UNIX

./gradlew runCLI --args=BTC-GBP

Windows

gradlew.bat runCLI --args=BTC-GBP

Hit Ctrl-C to quit the CLI.

Program

  • Establish websocket connection to coinbase pro exchange
  • Bootstrap order book with the one-time snapshot of existing bids/asks
  • Then process new incoming level two updates matches and add to order book
  • Extract 10 highest bids and 10 lowest asks (level 10 depth) and write to console.

Expected output

ericmcevoy@Erics-MacBook-Pro coinbase-pro-feed % ./gradlew runCLI --args=BTC-GBP
> Task :runCLI
L2 Subscription Request Sent
Coinbase Connection opened 
Level Two Snapshot Received - Bootstrapping Order Book
1. Ask           2. Bid
34844.47        34834.62
34845.22        34834.61
34845.55        34832.88
34847.04        34831.84
34847.05        34831.43
34848.32        34830.44
34849.04        34830.0
34852.52        34829.48
34852.53        34824.84
34852.54        34823.84
--------------------
Level Two Message Received
Processing & Adding to Order Book 

1. Ask           2. Bid
34844.47        34834.62
34845.22        34834.61
34845.55        34832.88
34847.04        34831.84
34847.05        34831.43
34848.32        34830.44
34849.04        34830.0
34852.52        34829.48
34852.53        34824.84
34852.54        34823.84
--------------------
etc..
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