Wiki source code of Accessing a wiki
Last modified by Thomas Mortagne on 2018/08/21
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| author | version | line-number | content |
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| 1 | {{box cssClass="floatinginfobox" title="**Contents**"}} | ||
| 2 | {{toc/}} | ||
| 3 | {{/box}} | ||
| 4 | |||
| 5 | XWiki supports [[multi-tenancy>>platform:Features.ScalabilityPerformance]] which means your instance can have several wikis. This page helps you understand how to configure XWiki to access the correct wiki. Check [[XWiki URL Format>>platform:DevGuide.Standard URL Format]] to better understand the current URL scheme. | ||
| 6 | |||
| 7 | XWiki supports 2 URL modes: Path-based and Domain based modes. | ||
| 8 | |||
| 9 | {{velocity}} | ||
| 10 | {{info}}The documentation below is for XWiki 5.0 and beyond. For earlier versions, use [[this documentation>>path:$xwiki.getURL("Documentation.AdminGuide.Virtualization.AccessWiki.WebHome", "viewrev", "rev=5.1")]]{{/info}} | ||
| 11 | {{/velocity}} | ||
| 12 | |||
| 13 | = Path-based wiki access = | ||
| 14 | |||
| 15 | This is the default mode if you haven't touched the XWiki configuration (##xwiki.virtual.usepath## property in the ##xwiki.cfg## file). | ||
| 16 | |||
| 17 | The URL format for this mode is: ##http:~/~/host/xwiki/wiki/wikialias/view/Space/Page##. | ||
| 18 | |||
| 19 | The important part of the URL is ##/wiki/wikialias##. Specifically it means: | ||
| 20 | |||
| 21 | * ##wiki##: this is just a fixed value used by XWiki to identify the URL as a path-based URL. If you wish to set a value different than ##wiki## you can configure it in ##xwiki.cfg## with the property ##xwiki.virtual.usepath.servletpath##.((( | ||
| 22 | {{warning}} | ||
| 23 | Don't forget to set the ##xwiki.authentication.logoutpage## property accordingly. Change the ##wiki## part in the property value for the right alias. | ||
| 24 | {{/warning}} | ||
| 25 | ))) | ||
| 26 | * ##wikialias##: this is used by XWiki to find the wiki descriptor (see below for more about wiki descriptors). The following algorithm is used: | ||
| 27 | ** First XWiki tries to find a page that contains a ##XWikiServerClass## object with the ##server## field having a value of ##wikialias##. If it finds one then it computes the name of the wiki by extracting it from that page name. Indeed, pages containing wiki descriptors must be named with the format ##XWikiServer<wikiid>##. For example if a page named ##XWikiServerTest## exists and it contains a ##XWikiServerClass## object with a ##server## field value of ##somewiki## then the URL ##http:~/~/host/xwiki/wiki/somewiki/...## will target the ##test## wiki (the value is lowercased from the page name when extracted). | ||
| 28 | ** If no wiki descriptor can be located then XWiki tries to find a page named ##XWikiServer<wikialias>## and having a ##XWikiServerClass## object in it. If it's found then the target wiki is ##wikialias##. | ||
| 29 | ** If no such page is found then the behavior depends on the value of the configuration property named ##xwiki.virtual.failOnWikiDoesNotExist## (located in your ##xwiki.cfg## file). If the value is ##0## (which is the default) then the wiki served is the main wiki. If the value is ##1## then an error saying that the wiki doesn't exist is displayed. | ||
| 30 | |||
| 31 | Note that if no ##/wiki/wikialias## path is found in the URL then XWiki continues to look for a wiki using the domain-based algorithm explained below. | ||
| 32 | |||
| 33 | = Domain-based wiki access = | ||
| 34 | |||
| 35 | {{info}} | ||
| 36 | This was the default mode prior to XWiki 3.3. After the release of XWiki 3.3 the path-based mode was configured to be the default since it's the easiest to use. | ||
| 37 | {{/info}} | ||
| 38 | |||
| 39 | The URL format for this mode is: ##{{{http://domain/xwiki/bin/view/Space/Page}}}##. The information about which wiki is targeted is part of the ##domain## part of the URL. | ||
| 40 | |||
| 41 | The following algorithm is used by XWiki: | ||
| 42 | |||
| 43 | * First it tries to find a page that contains a ##XWikiServerClass## object with the ##server## field having a value of ##domain##. If it finds one then it computes the name of the wiki by extracting it from that page name. Indeed, pages containing wiki descriptors must be named with the format ##XWikiServer<wikiid>##. For example if a page named ##XWikiServerTest## exists and it contains a ##XWikiServerClass## object with a ##server## field value of ##somewiki## then the URL ##http:~/~/somewiki/xwiki/bin/...## will target the ##test## wiki (the value is lowercased from the page name when extracted). | ||
| 44 | * If no wiki descriptor can be located then XWiki performs some checks: | ||
| 45 | ** If the ##domain## value is an IP (e.g. 127.0.0.1, 85.65.12.36, etc.) or has the value of ##localhost## then XWiki considers you're targeting the main wiki | ||
| 46 | ** If not, then XWiki tries to split the domain name and takes the first part before the "." (dot) character. For example if you have a domain name of ##prefix.domain.com## then it extracts ##prefix##. It then performs some additional checks: | ||
| 47 | *** if the value of ##prefix## is ##www## and there's no wiki alias named ##www## (i.e. there's no page with a ##XWikiServerClass## object having a ##server## field value of ##www##) then XWiki considers you're targeting the main wiki. | ||
| 48 | *** If not, then XWiki tries to find a page named ##XWikiServer<prefix>## and having a ##XWikiServerClass## object in it. If it's found then the target wiki is ##prefix##. | ||
| 49 | *** If no such page is found then the behavior depends on the value of the configuration property named ##xwiki.virtual.failOnWikiDoesNotExist## (located in your ##xwiki.cfg## file). If the value is ##0## (which is the default) then the wiki served is the main wiki. If the value is ##1## then an error saying that the wiki doesn't exist is displayed. | ||
| 50 | |||
| 51 | {{info}} | ||
| 52 | Note that in this mode you need to configure your DNS or modify your ##/etc/hosts## file in your operating system (see [[Hosts file documentation on Wikipedia>>http://en.wikipedia.org/wiki/Hosts_file]] for details). | ||
| 53 | {{/info}} |
