annotate mod_graceful_shutdown/README.markdown @ 3955:017f60608fc8

mod_smacks: also count outgoing MAM messages mod_smacks doesn't count outgoing MAM messages, which causes warnings in Prosody such as: > The client says it handled 41 new stanzas, but we only sent 2 It seems mod_smacks is in the wrong here and that it's too strict in trying to determine what is a valid stanza to count. In RFC6120: > Definition of XML Stanza: An XML stanza is the basic unit of meaning > in XMPP. A stanza is a first-level element (at depth=1 of the stream) > whose element name is "message", "presence", or "iq" and whose > qualifying namespace is 'jabber:client' or 'jabber:server'.
author JC Brand <jc@opkode.com>
date Thu, 26 Mar 2020 11:57:02 +0100
parents 88474dd1af48
children 999e7cb7f6d9
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1 This module is an experiment about a more graceful shutdown process.
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2
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3 Why
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4 ===
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5
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6 When shutting down, a number of sessions, connections and other things
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7 are teared down. Due to all these things happening very quickly,
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8 sometimes e.g. client unavailable notifications don't make it to all
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9 remote contacts because the server-to-server connections are teared down
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10 just after.
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12 How
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13 ===
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15 This module works by breaking the shutdown process into separate steps
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16 with a brief pause between them.
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17
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18 It goes something like this
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20 1. Stop accepting new client connections.
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21 2. Close all client connections.
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22 3. Fire event for everything else.
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23 4. Tell `net.server` to quit the main loop.
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24 5. ???
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25 6. Still here? Kill itself.
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26