feat(resolve): Cache DDO file to OS temp folder

fs.js

@@ -1,10 +1,10 @@
+const { toHex, writeCache } = require('./util')
 const { dirname, resolve } = require('path')
 const { createSwarm } = require('ara-network/discovery')
 const { createCFS } = require('cfsnet/create')
 const { normalize } = require('./did')
 const isDomainName = require('is-domain-name')
 const isBrowser = require('is-browser')
-const { toHex } = require('./util')
 const { DID } = require('did-uri')
 const mkdirp = require('mkdirp')
 const crypto = require('ara-crypto')
@@ -199,7 +199,7 @@ async function readFile(identifier, filename, opts) {
  try {
  const buffer = await cfs.readFile(filename)
  if (false === isBrowser) {
- await writeFile(identifier, filename, buffer, opts)
+ await writeCache(did.identifier, buffer)
  }
  done(null, buffer)
  } catch (err) {

resolve.js

@@ -1,7 +1,7 @@
+const { resolveDNS, writeCache } = require('./util')
 const { unpack, keyRing } = require('ara-network/keys')
 const { readFile, stat } = require('fs')
 const { createChannel } = require('ara-network/discovery/channel')
-const { resolveDNS } = require('./util')
 const isDomainName = require('is-domain-name')
 const isBrowser = require('is-browser')
 const isBuffer = require('is-buffer')
@@ -294,6 +294,10 @@ async function findResolution(did, opts, state) {
  const json = await res.json()
  result = json.didDocument
 
+ // Write DDO to temp cache folder
+ if (false === isBrowser) {
+ await writeCache(did.identifier, JSON.stringify(result))
+ }
  didResolve = true
  cleanup()
  pending--