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mod_measure_modules: Report module statuses via OpenMetrics Someone in the chat asked about a health check endpoint, which reminded me of mod_http_status, which provides access to module statuses with full details. After that, this idea came about, which seems natural. As noted in the README, it could be used to monitor that critical modules are in fact loaded correctly. As more modules use the status API, the more useful this module and mod_http_status becomes.
author Kim Alvefur <zash@zash.se>
date Fri, 06 Oct 2023 18:34:39 +0200
parents 0e1e775bdea0
children
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---
labels:
- 'Stage-Alpha'
summary: 'Experimental module to add metadata to media in MUCs'
...

# Introduction

This module adds additional metadata to media shared in a MUC. This can help clients
make decisions and provide better UI and enhanced privacy, by knowing things like file
size without needing to make external network requests.

::: {.alert .alert-danger}
**NOTE:** This is an experimental module. It is not supported by any
clients, and therefore is mainly of interest to client developers who
wish to explore the idea.
:::

# Configuring

## Enabling

``` {.lua}
Component "rooms.example.net" "muc"
modules_enabled = {
    "muc_media_metadata";
}
```

## Settings

There are no configuration options for this module.

# Developers

## Example stanzas

A normal message in a chatroom containing an image:

```
<message from="test@rooms.example.com/matthew" id="9f45a784-5e5b-4db5-a9b3-8ea1d7c1162d" type="groupchat">
  <body>https://matthewwild.co.uk/share.php/70334772-ff74-439b-8173-a71e40ca28db/mam-flow.png</body>
  <x xmlns="jabber:x:oob">
    <url>https://matthewwild.co.uk/share.php/70334772-ff74-439b-8173-a71e40ca28db/mam-flow.png</url>
  </x>
</message>
```

The same stanza with this module loaded now contains additional metadata added by the server:

```
<message from="test@rooms.example.com/matthew" id="9f45a784-5e5b-4db5-a9b3-8ea1d7c1162d" type="groupchat">
  <body>https://matthewwild.co.uk/share.php/70334772-ff74-439b-8173-a71e40ca28db/mam-flow.png</body>
  <x xmlns="jabber:x:oob">
    <url>https://matthewwild.co.uk/share.php/70334772-ff74-439b-8173-a71e40ca28db/mam-flow.png</url>
    <metadata xmlns="xmpp:prosody.im/protocol/media-metadata#0">
      <bytes>15690</bytes>
      <type>image/png</type>
      <blurhash>LEHV6nWB2yk8pyo0adR*.7kCMdnj</blurhash>
    </metadata>
  </x>
</message>
```