annotate mod_http_stats_stream/README.markdown @ 5551:8bfcedd93a72

mod_rest: List all error conditions in OpenAPI spec These are not handled by datamanager but by util.stanza and util.error, so they are not represented in the JSON schema file.
author Kim Alvefur <zash@zash.se>
date Sat, 17 Jun 2023 16:26:33 +0200
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1 ---
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2 depends:
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3 - 'mod\_http'
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4 provides:
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5 - http
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6 ---
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7
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8 # Introduction
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10 This module provides a streaming interface to [Prosodys internal statistics][doc:statistics] via
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11 [Server-sent events](https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events).
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13 ## Example
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15 ```js
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16 var evtSource = new EventSource("/stats_stream");
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18 /*
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19 * An event with all current statistics in the form of a JSON object.
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20 * Normally sent only once, when first connected to the stream.
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21 */
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22 evtSource.addEventListener("stats-full", function(e) {
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23 var initial_stats = JSON.parse(e.data);
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24 console.log(initial_stats);
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25 }, false);
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27 /*
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28 * An event containing only statistics that have changed since the last
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29 * 'stats-full' or 'stats-updated' event.
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30 */
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31 evtSource.addEventListener("stats-updated", function(e) {
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32 var updated_stats = JSON.parse(e.data);
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33 console.log(updated_stats);
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34 }, false);
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35 ```
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36
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37 # Compatibility
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39 * Prosody \>= 0.11.0
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40 * Trunk < [5f15ab7c6ae5](https://hg.prosody.im/trunk/rev/5f15ab7c6ae5)