write-secrets.lua

-- Script that writes secrets to k/v engine in Vault
-- Indicate number of secrets to write to secret/read-test path with "-- <N>"

local counter = 1
local threads = {}

function setup(thread)
   thread:set("id", counter)
   table.insert(threads, thread)
   counter = counter + 1
end

function init(args)
   require("check_envvars")
   check_envvars()
   
   if args[1] == nil then
      num_secrets = 1000
   else
      num_secrets = tonumber(args[1])
   end
   print("Number of secrets is: " .. num_secrets)
   requests  = 0
   writes = 0
   responses = 0
   method = "POST"
   path = "/v1/secret/read-test/secret-0"
   body = ''
   local msg = "thread %d created"
   print(msg:format(id))
end

function request()
   -- First request is not actually invoked
   -- So, don't process it in order to get secret-1 as first secret
   if requests > 0 then
      writes = writes + 1
      -- cycle through paths from 1 to num_secrets in order
      path = "/v1/secret/read-test/secret-" .. writes
      -- minimal secret giving thread id and # of write
      -- body = '{"foo-' .. id .. '" : "bar-' .. writes ..'"}'
      -- add extra key with 100 bytes
      body = '{"thread-' .. id .. '" : "write-' .. writes ..'","extra" : "1xxxxxxxxx2xxxxxxxxx3xxxxxxxxx4xxxxxxxxx5xxxxxxxxx6xxxxxxxxx7xxxxxxxxx8xxxxxxxxx9xxxxxxxxx0xxxxxxxxx"}'
   end
   requests = requests + 1
   return wrk.format(method, path, nil, body)
end

function response(status, headers, body)
   responses = responses + 1
   if responses == num_secrets then
      os.exit()
   end
end

done = function(summary, latency, requests)
   require("check_audit")
   audit_enabled = check_audit()
   
   io.write("\nJSON Output:\n")
   io.write("{\n")
   io.write(string.format("\t\"requests\": %d,\n", summary.requests))
   io.write(string.format("\t\"duration_in_microseconds\": %0.2f,\n", summary.duration))
   io.write(string.format("\t\"bytes\": %d,\n", summary.bytes))
   io.write(string.format("\t\"requests_per_sec\": %0.2f,\n", (summary.requests/summary.duration)*1e6))
   io.write(string.format("\t\"bytes_transfer_per_sec\": %0.2f,\n", (summary.bytes/summary.duration)*1e6))

   io.write("\t\"latency_distribution\": [\n")
   for _, p in pairs({ 50, 75, 90, 99, 99.9, 99.99, 99.999, 100 }) do
      io.write("\t\t{\n")
      n = latency:percentile(p)
      io.write(string.format("\t\t\t\"percentile\": %g,\n\t\t\t\"latency_in_microseconds\": %d\n", p, n))
      if p == 100 then 
          io.write("\t\t}\n")
      else 
          io.write("\t\t},\n")
      end
   end
   io.write("\t]\n}\n")
end