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Overview

This project has a console application [also a web api, mentioned below] written in c# which connects to the Uniswap API v3 and collects the liquidity positions of both the cryptocurrencies of a user defined liquidity pool.

Below are the information it fetches and shows them on console (in addition to writting them in log files).

  • Position of token0 (USDC in this example)
  • Position of token1 (ETH in this example)
  • Current price of token0:token1 (USDC per ETH in this example)

Example: Lets say, you want to fetch the below highlighted information for pool id 245953.

Uniswap Interface

Run the application and here is the output information fetched from Uniswap API v3.

Console output

Note:

  • You can set the pool id, precisions and also the interval after which the application should fetch the information from Uniswap API v3.
# app.config

  <appSettings>
    <add key="PoolId" value="245953" />
    <add key="PrecisionForPosition0" value="3" />
    <add key="PrecisionForPosition1" value="6" />
    <add key="PrecisionForCurrentPrice" value="2" />
    <add key="IntervalInSeconds" value="60" />
  </appSettings>
  • You can also control the output by customizing configuration in log4net.config. (eg.: change the log directory, pattern, rolling style etc.)
# log4net.config
  <root>
    <level value="ALL" />
    <!--<appender-ref ref="console" />-->
    <appender-ref ref="file" />
  </root>

  • When network is disconnected/fluctuated, It retries in a smart way which automatically calculates the number of retries to be done exponentially based on IntervalInSeconds provided in app.config. For example: for a given interval 60 seconds, lets say first trigger is at 10:30. If Uniswap API can not be connected, then there will be maximum 4 retries (auto calculated).

    • First retry will be done after 5 seconds [10:30:05]
    • 2nd retry will be done after 10 seconds [10:30:15]
    • 3rd retry will be done after 15 seconds [10:30:30]
    • 4th retry will be done after 20 seconds [10:30:50]
    • If API still can not be connected, then send error Unable to retrieve the data from server after 4 retries.
    • A new timer will be triggered at [10:31:00].

  • There is also an webapi project, which exposes endpoint positions to allow you fetch the same information. On Uniswap.WebApi in visual studio, right click and select Set as Startup project and run the api.

API output

Note:

  • Format of api is positions/<pool_id>/<token0_precision>/<token1_precision>/<currentprice_precision>. Few examples:
    • https://<address>/positions/245953 => Shows the information with no truncation.
    • https://<address>/positions/245953/3 => Truncates only token0 position with 3 decimal precision
    • https://<address>/positions/245953/3/6 => Truncates token0 position with 3 decimal precisions and token1 position with 6 precision.
    • https://<address>/positions/245953/null/null/2 => Truncate only current price with 2 decimal precision.