[tahoe-lafs-trac-stream] [Tahoe-LAFS] #2476: add JSON encoding of information from Welcome page

[Tahoe-LAFS]

#2476: add JSON encoding of information from Welcome page
-----------------------------------+---------------------------------
     Reporter:  daira              |      Owner:  warner
         Type:  defect             |     Status:  new
     Priority:  normal             |  Milestone:  undecided
    Component:  code-frontend-web  |    Version:  1.10.1
   Resolution:                     |   Keywords:  webapi json welcome
Launchpad Bug:                     |
-----------------------------------+---------------------------------

Comment (by dawuud):

 ok i've made some progress here:
 https://github.com/david415/tahoe-lafs/tree/2476.add_json_welcome_page.0

 it works... output json with a list of summaries for connections to
 introducers and storage servers:

 ```
 {
  "introducers": {
   "statuses": [
    "Connected to tcp:127.0.0.1:33791 via tcp"
   ]
  },
  "servers": {
   "statuses": [
    "Connected to tcp:127.0.0.1:41421 via tcp"
   ]
  }
 }
 ```

 i can change the format but i did it like this because it was easiest. For
 each storage server and introducer we get a `ConnectionStatus` object
 which contains a summary string. If we want the data in a different format
 then I can make some changes.

--
Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/2476#comment:1>
Tahoe-LAFS <https://Tahoe-LAFS.org>
secure decentralized storage