Software / code / prosody
Annotate
spec/scansion/pubsub_createdelete.scs @ 13186:affaf6d08d26
util.datamanager: Pad list writes to avoid crossing block boundaries
By padding items so that they do not cross block boundaries, it becomes
eaiser to delete whole blocks with fallocate() without cutting items
in half, improving efficiency of such operations.
Since list stores are used for message archives, where the most common
deletion operation would be of the oldest entires, at the top of the
file. With this, all blocks that contain items to be removed could be
deleted without needing to read, delete and write out the whole file.
| author | Kim Alvefur <zash@zash.se> |
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| date | Wed, 07 Jun 2023 00:39:30 +0200 |
| parent | 9291:329a670ae975 |
| rev | line source |
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1 # Pubsub: Create and delete |
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2 |
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3 [Client] Romeo |
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4 jid: admin@localhost |
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5 password: password |
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6 |
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7 // admin@localhost is assumed to have node creation privileges |
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8 |
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9 --------- |
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10 |
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11 Romeo connects |
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12 |
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13 Romeo sends: |
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14 <iq type="set" to="pubsub.localhost" id='create1'> |
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15 <pubsub xmlns="http://jabber.org/protocol/pubsub"> |
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16 <create node="princely_musings"/> |
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17 </pubsub> |
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18 </iq> |
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19 |
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20 Romeo receives: |
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21 <iq type="result" id='create1'/> |
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22 |
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23 Romeo sends: |
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24 <iq type="set" to="pubsub.localhost" id='create2'> |
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25 <pubsub xmlns="http://jabber.org/protocol/pubsub"> |
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26 <create node="princely_musings"/> |
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27 </pubsub> |
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28 </iq> |
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29 |
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30 Romeo receives: |
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31 <iq type="error" id='create2'> |
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32 <error type="cancel"> |
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33 <conflict xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/> |
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34 </error> |
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35 </iq> |
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36 |
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37 Romeo sends: |
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38 <iq type="set" to="pubsub.localhost" id='delete1'> |
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39 <pubsub xmlns="http://jabber.org/protocol/pubsub#owner"> |
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40 <delete node="princely_musings"/> |
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41 </pubsub> |
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42 </iq> |
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43 |
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44 Romeo receives: |
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45 <iq type="result" id='delete1'/> |
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46 |
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47 Romeo sends: |
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48 <iq type="set" to="pubsub.localhost" id='delete2'> |
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49 <pubsub xmlns="http://jabber.org/protocol/pubsub#owner"> |
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50 <delete node="princely_musings"/> |
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51 </pubsub> |
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52 </iq> |
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53 |
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54 Romeo receives: |
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55 <iq type="error" id='delete2'> |
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56 <error type="cancel"> |
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57 <item-not-found xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"/> |
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58 </error> |
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59 </iq> |
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60 |
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61 Romeo disconnects |
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62 |
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63 // vim: syntax=xml: |
