annotate mod_log_json/README.markdown @ 4203:c4002aae4ad3

mod_s2s_keepalive: Use timestamp as iq @id RFC 6120 implies that the id attribute must be unique within a stream. This should fix problems with remote servers that enforce uniqueness and don't answer duplicated ids. If it doesn't do that, then at least you can get a guesstimate at round-trip time from the difference between the result iq stanza and the timestamp it was logged without having to go look for when it was sent, or needing to keep state.
author Kim Alvefur <zash@zash.se>
date Wed, 14 Oct 2020 18:02:10 +0200
parents bc865568ff02
children 4356088ad675
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1 ---
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2 summary: JSON Log Sink
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3 ---
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4
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5 Conifiguration
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6 ==============
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7
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8 Here we log to `/var/log/prosody/prosody.json`:
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9
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10 ``` {.lua}
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11 log = {
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12 -- your other log sinks
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13 info = "/var/log/prosody/prosody.log"
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14 -- add this:
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15 { to = "json", filename = "/var/log/prosody/prosody.json" };
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16 }
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17 ```
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18
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19 ## UDP
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20
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21 Alternatively, it can send logs via UDP:
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22
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23 ```lua
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24 log = {
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25 { to = "json", udp_host = "10.1.2.3", udp_port = "9999" };
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26 }
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27 ```
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28
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29 Format
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30 ======
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31
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32 JSON log files consist of a series of `\n`-separated JSON objects,
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33 suitable for mangling with tools like
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34 [`jq`](https://stedolan.github.io/jq/).
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35
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36 Example (with whitespace and indentation for readability):
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37
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38 ``` {.json}
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39 {
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40 "args" : [],
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41 "datetime" : "2019-11-03T13:38:28Z",
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42 "level" : "info",
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43 "message" : "Client connected",
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44 "source" : "c2s55f267f5b9d0"
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45 }
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46 {
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47 "args" : [
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48 "user@example.net"
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49 ],
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50 "datetime" : "2019-11-03T13:38:28Z",
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51 "level" : "debug",
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52 "message" : "load_roster: asked for: %s",
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53 "source" : "rostermanager"
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54 }
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55 ```
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56
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57 `datetime`
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58 : [XEP-0082]-formatted timestamp.
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59
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60 `source`
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61 : Log source, usually a module or a connected session.
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62
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63 `level`
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64 : `debug`, `info`, `warn` or `error`
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65
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66 `message`
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67 : The log message in `printf` format. Combine with `args` to get the
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68 final message.
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69
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70 `args`
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71 : Array of extra arguments, corresponding to `printf`-style `%s`
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72 formatting in the `message`.