Software / code / prosody-modules
Annotate
mod_log_json/README.markdown @ 5491:7842502c1157
mod_http_debug: Log some extended info about requests
If you point something external at this module, you don't get the
response body back, hence it can be useful to see some details in the
log as well.
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Fri, 26 May 2023 15:37:15 +0200 |
| parent | 4462:4356088ad675 |
| rev | line source |
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| 3735 | 1 --- |
| 2 summary: JSON Log Sink | |
| 3 --- | |
| 4 | |
| 5 Conifiguration | |
| 6 ============== | |
| 7 | |
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8 Here we log to `/var/log/prosody/prosody.json`: |
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9 |
| 3735 | 10 ``` {.lua} |
| 11 log = { | |
| 12 -- your other log sinks | |
| 13 info = "/var/log/prosody/prosody.log" | |
| 14 -- add this: | |
| 15 { to = "json", filename = "/var/log/prosody/prosody.json" }; | |
| 16 } | |
| 17 ``` | |
| 18 | |
| 3746 | 19 ## UDP |
| 20 | |
| 21 Alternatively, it can send logs via UDP: | |
| 22 | |
| 23 ```lua | |
| 24 log = { | |
| 25 { to = "json", udp_host = "10.1.2.3", udp_port = "9999" }; | |
| 26 } | |
| 27 ``` | |
| 28 | |
| 3735 | 29 Format |
| 30 ====== | |
| 31 | |
| 32 JSON log files consist of a series of `\n`-separated JSON objects, | |
| 33 suitable for mangling with tools like | |
| 34 [`jq`](https://stedolan.github.io/jq/). | |
| 35 | |
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36 Example (with whitespace and indentation for readability): |
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37 |
| 3735 | 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 } |
| 3735 | 55 ``` |
| 56 | |
| 57 `datetime` | |
| 58 : [XEP-0082]-formatted timestamp. | |
| 59 | |
| 60 `source` | |
| 61 : Log source, usually a module or a connected session. | |
| 62 | |
| 63 `level` | |
| 64 : `debug`, `info`, `warn` or `error` | |
| 65 | |
| 66 `message` | |
| 67 : The log message in `printf` format. Combine with `args` to get the | |
| 68 final message. | |
| 69 | |
| 70 `args` | |
| 71 : Array of extra arguments, corresponding to `printf`-style `%s` | |
| 72 formatting in the `message`. | |
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73 |
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74 Formatted message |
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75 ----------------- |
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76 |
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77 If desired, at the obvious expense of performance, the formatted version of |
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78 the string can be included in the JSON object by specifying the `formatted_as` |
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79 key in the logger config: |
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80 |
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81 ``` {.lua} |
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82 log = { |
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83 -- ... other sinks ... |
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84 { to = "json", formatted_as = "msg_formatted", filename = "/var/log/prosody/prosody.json" }; |
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85 } |
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86 |
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87 ``` |
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88 |
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89 This will expose the formatted message in the JSON as separate `msg_formatted` |
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90 key. It is possible to override existing keys using this (for example, the |
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91 `message` key), but not advisible. |
