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mod_mam/README.markdown

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mod_mam/README.markdown @ 3769:ce1a32aa8bca

mod_s2s_keepalive: Include event payload in re-fired event (fix traceback)
author Kim Alvefur <zash@zash.se>
date Sun, 22 Dec 2019 15:46:20 +0100
parent 3666:637d63b7398e
child 4783:6ca1117b81a5
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1 ---
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2 labels:
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3 - 'Stage-Merged'
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4 summary: 'XEP-0313: Message Archive Management'
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5 ...
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6
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7 Introduction
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8 ============
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9
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10 Implementation of [XEP-0313: Message Archive Management].
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11
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12 Details
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13 =======
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14
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15 This module will archive all messages that match the simple rules setup
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16 by the user, and allow the user to access this archive.
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17
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18 Usage
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19 =====
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20
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21 First copy the module to the prosody plugins directory.
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22
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23 Then add "mam" to your modules\_enabled list:
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25 ``` {.lua}
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26 modules_enabled = {
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27 -- ...
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28 "mam",
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29 -- ...
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30 }
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31 ```
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32
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33 Configuration
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34 =============
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35
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36 Option summary
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37 --------------
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38
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39 option type default
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40 ------------------------------ ----------------------- -----------
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41 max\_archive\_query\_results number `50`
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42 default\_archive\_policy boolean or `"roster"` `true`
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43 archive\_expires\_after string `"1w"`
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44 archive\_cleanup\_interval number `4*60*60`
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46
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47 Storage backend
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48 ---------------
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49
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50 mod\_mam uses the store "archive2"[^1]. See [Prosodys data storage
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51 documentation][doc:storage] for information on how to configure storage.
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52
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53 For example, to use mod\_storage\_sql (requires Prosody 0.10 or later):
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55 ``` {.lua}
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56 storage = {
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57 archive2 = "sql";
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58 }
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59 ```
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60
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61 If no archive-capable storage backend can be opened then an in-memory
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62 one will be used as fallback.
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63
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64 Query size limits
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65 -----------------
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66
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67 max_archive_query_results = 20;
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68
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69 This is the largest number of messages that are allowed to be retrieved
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70 in one request *page*. A query that does not fit in one page will
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71 include a reference to the next page, letting clients page through the
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72 result set. Setting large number is not recommended, as Prosody will be
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73 blocked while processing the request and will not be able to do anything
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74 else.
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75
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76 Archive expiry
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77 --------------
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78
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79 Messages in the archive will expire after some time, by default one
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80 week. This can be changed by setting `archive_expires_after`:
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81
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82 ``` {.lua}
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83 archive_expires_after = "1d" -- one day
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84
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85 archive_expires_after = "1w" -- one week, the default
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86
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87 archive_expires_after = "2m" -- two months
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88
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89 archive_expires_after = "1y" -- one year
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90
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91 archive_expires_after = 60 * 60 -- one hour
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92
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93 archive_expires_after = "never" -- forever
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94 ```
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95
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96 The format is an integer number of seconds or a multiple of a period
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97 given by a suffix that can be one of `d` (day), `w` (week), `m` (month)
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98 or `y` (year). No multiplier means seconds.
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99
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100 Message matching policy
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101 -----------------------
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102
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103 The MAM protocol includes a way for clients to control what messages
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104 should be stored. This allows users to enable or disable archiving by
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105 default or for specific contacts.
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106
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107 ``` {.lua}
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108 default_archive_policy = true
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109 ```
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110
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111 `default_archive_policy =` Meaning
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112 ---------------------------- ------------------------------------------------------
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113 `false` Store no messages.
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114 `"roster"` Store messages to/from contacts in the users roster.
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115 `true` Store all messages. This is the default.
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116
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117 Compatibility
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118 =============
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119
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120 ------- -----------------------
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121 trunk Included with Prosody
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122 0.10 Included with Prosody
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123 0.9 Works
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124 0.8 Does not work
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125 ------- -----------------------
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126
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127
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128 [^1]: Might be changed to "mam" at some point
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129