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crypto-prices

Sequence that keeps printing current crypto prices for a provided pair of currencies every 1s.

Source Code

Description

  • Name: @scramjet/crypto-prices
  • Version: 0.23.0
  • Language: typescript
  • Author: pietrzakacper
  • Tags: medium,fintech,crypto,BI,Data Producer

📽️ There is video that illustrates the execution of the sample is on our YouTube channel How to check cryptocurrency prices using Scramjet?. Give a 👍 if you liked it and "Subscribe" to the channel to keep up to date with new videos.

Running

❗ Remember to setup transform-hub locally or use the platform's environment for the sequence deployment.

Open the terminal and run the following commands:

# go to 'crypto-prices' directory cd typescript/crypto-prices # install dependencies npm install # transpile TS->JS and copy node_modules and package.json to dist/ npm run build # deploy the Sequence from the dist/ directory, which contains transpiled code, package.json and node_modules si seq deploy dist # see the Instance output si inst output -

💡NOTE: Command deploy performs three actions at once: pack, send and start the Sequence. It is the same as if you would run those three commands separately:

si seq pack dist/ -o crypto-prices.tar.gz # compress 'dist/' directory into file named 'crypto-prices.tar.gz' si seq send crypto-prices.tar.gz # send packed Sequence to STH, this will output Sequence ID si seq start - # start the Sequence, this will output Instance ID

Start with params

# run another Sequence by passing in arguments, any pair [cryptocurrency, currency] $ si seq start - --args [\"ETH\",\"PLN\"] # or similar with deploy si seq deploy dist --args [\"ETH\",\"PLN\"]

Output

Once you run si inst output - command you should get an output similar to this one:

"{\"data\":{\"base\":\"BTC\",\"currency\":\"USD\",\"amount\":\"40989.61\"}}\r\n" "{\"data\":{\"base\":\"BTC\",\"currency\":\"USD\",\"amount\":\"40989.61\"}}\r\n" "{\"data\":{\"base\":\"BTC\",\"currency\":\"USD\",\"amount\":\"40989.61\"}}\r\n" "{\"data\":{\"base\":\"BTC\",\"currency\":\"USD\",\"amount\":\"40989.61\"}}\r\n" "{\"data\":{\"base\":\"BTC\",\"currency\":\"USD\",\"amount\":\"40989.61\"}}\r\n" "{\"data\":{\"base\":\"BTC\",\"currency\":\"USD\",\"amount\":\"40989.61\"}}\r\n" "{\"data\":{\"base\":\"BTC\",\"currency\":\"USD\",\"amount\":\"40989.61\"}}\r\n" "{\"data\":{\"base\":\"BTC\",\"currency\":\"USD\",\"amount\":\"40989.61\"}}\r\n" "{\"data\":{\"base\":\"BTC\",\"currency\":\"USD\",\"amount\":\"40989.61\"}}\r\n"