Mercurial > prosody-modules
annotate mod_muc_eventsource/mod_muc_eventsource.lua @ 4876:0f5f2d4475b9
mod_http_xep227: Add support for import via APIs rather than direct store manipulation
In particular this transitions PEP nodes and data to be imported via mod_pep's
APIs, fixing issues with importing at runtime while PEP data may already be
live in RAM.
Next obvious candidate for this approach is rosters, so clients get immediate
roster pushes and other special handling (such as emitting subscribes to reach
the desired subscription state).
author | Matthew Wild <mwild1@gmail.com> |
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date | Tue, 18 Jan 2022 17:01:18 +0000 |
parents | 39485b9bbdd6 |
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1 module:depends("http"); |
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2 local nodeprep = require "util.encodings".stringprep.nodeprep; |
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3 |
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4 local jid_split = require "util.jid".split; |
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5 local json = require "util.json"; |
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6 |
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7 local streams = {}; |
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8 |
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9 function client_closed(response) |
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10 local node = response._eventsource_node; |
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11 module:log("debug", "Destroying client for %q", node); |
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12 streams[node][response] = nil; |
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13 if next(streams[node]) == nil then |
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14 streams[node] = nil; |
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15 end |
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16 end |
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17 |
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18 function serve_stream(event, node) |
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19 local response = event.response; |
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20 |
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21 node = nodeprep(node); |
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22 if node == nil then |
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23 return 400; |
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24 end |
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25 |
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26 module:log("debug", "Client subscribed to: %s", node); |
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27 |
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28 response.on_destroy = client_closed; |
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29 response._eventsource_node = node; |
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30 |
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31 response.conn:write(table.concat({ |
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32 "HTTP/1.1 200 OK"; |
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33 "Content-Type: text/event-stream"; |
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34 "Access-Control-Allow-Origin: *"; |
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35 "Access-Control-Allow-Methods: GET"; |
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36 "Access-Control-Max-Age: 7200"; |
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37 ""; |
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38 ""; |
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39 }, "\r\n")); |
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40 |
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41 local clientlist = streams[node]; |
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42 if not clientlist then |
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43 clientlist = {}; |
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44 streams[node] = clientlist; |
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45 end |
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46 clientlist[response] = response.conn; |
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47 |
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48 return true; |
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49 end |
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50 |
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51 function handle_message(event) |
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52 local room, stanza = event.room, event.stanza; |
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53 local node = (jid_split(event.room.jid)); |
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54 local clientlist = streams[node]; |
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55 if not clientlist then module:log("debug", "No clients for %q", node); return; end |
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56 |
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57 -- Extract body from message |
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58 local body = event.stanza:get_child_text("body"); |
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59 if not body then |
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60 return; |
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61 end |
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62 local nick = select(3, jid_split(stanza.attr.from)); |
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63 -- Encode body and broadcast to eventsource subscribers |
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64 local json_data = json.encode({ |
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65 nick = nick; |
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66 body = body; |
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67 }); |
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68 local data = "data: "..json_data:gsub("\n", "\ndata: \n").."\n\n"; |
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69 for response, conn in pairs(clientlist) do |
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70 conn:write(data); |
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71 end |
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72 end |
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73 |
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74 module:provides("http", { |
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75 name = "eventsource"; |
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76 route = { |
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77 ["GET /*"] = serve_stream; |
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78 }; |
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79 }); |
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80 |
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81 |
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82 module:hook("muc-broadcast-message", handle_message); |