scylla-migration/sandbox.coffee

Simple schema migration tool for ScyllaDB

#!/usr/bin/env coffee

_ = require 'lodash'
Q = require 'q'
fs = require 'fs'
os = require 'os'
assert = require 'assert'

n = [['four', 4], ['three', 3], ['seven', 7], ['nine', 9]]
s = _.sortBy(n, ([t,n]) -> n)
_.zip(['three', 'four', 'seven', 'nine'], _(s).map(([t,n]) -> t).value()).forEach(([L,R]) -> assert.equal(L, R))

assert.equal('', ''.split('__')[0])

assert.equal(0, _([1]).filter((v) -> isNaN(v)).size())

idx = require './src/index'

config =
  migrationsDir: "test"

console.log "Config: #{config}"

console.log "Stat:", fs.statSync('sandbox.coffee')

idx.listMigrations config
.then (files) ->
  console.log "Migration files:", files
.catch (error) ->
  console.log "Error: #{error}\n#{error.stack}"

console.log "Shift empty array:", [].shift()

promiseMe = (value) ->
  d = Q.defer()
  setTimeout(-> d.resolve value, 5000)
  d.promise

Q.all [promiseMe('A'), promiseMe('B')]
.spread (a, b) ->
  console.log "a: #{a}"
  console.log "b: #{b}"
.catch (error) ->
  console.log error

cpus = os.cpus()
cpuCount = _(cpus).size()
console.log "[#{cpuCount}] CPUs:\n", cpus

Q.fcall ->
  return Q.fcall -> 
    return 1
.then (one) ->
  throw new Error("This is supposed to happen.")
  console.log "What?!"
.catch (error) ->
  console.log "Hey! We caught an exception: #{error}"