|
|
Line 41: |
Line 41: |
| = Take Virgo for a spin = | | = Take Virgo for a spin = |
| | | |
− | If you want to take the Virgo server for a spin, go [[Virgo/Community/Spin|here]]. First [http://www.eclipse.org/virgo/download/ download it] and unpack the downloaded archive to a directory, which we will refer to as $SERVER_HOME, ensuring there are no spaces in the path of the directory. On Windows unzip to a directory, which we will refer to as %SERVER_HOME%, again ensuring there are no spaces in the path of the directory. We recommend 7zip for unpacking on Windows as the built-in zip extraction utility sometimes fail to unpack reliably. | + | If you want to take the Virgo server for a spin, go [[Virgo/Community/Spin|here]]. |
− | | + | |
− | Then start the Virgo web server. On Unix, issue the following commands from a shell:
| + | |
− | <pre>>cd $SERVER_HOME
| + | |
− | >bin/startup.sh
| + | |
− | </pre>
| + | |
− | On Windows, issue the following commands in a command prompt:
| + | |
− | <pre>>cd %SERVER_HOME%
| + | |
− | >bin\startup.bat
| + | |
− | </pre>
| + | |
− | | + | |
− | Virgo should issue event log messages like this:
| + | |
− | <pre>[2010-06-04 10:55:48.236] startup-tracker <KE0001I> Kernel starting.
| + | |
− | [2010-06-04 10:55:52.078] kernel-dm-11 <SH0001I> Kernel ssh shell available on port 2401.
| + | |
− | [2010-06-04 10:55:52.197] startup-tracker <KE0002I> Kernel started.
| + | |
− | [2010-06-04 10:55:52.308] system-artifacts <DE0000I> Installing plan 'org.eclipse.virgo.kernel.userregion.springdm' version '2.1.0'.
| + | |
− | [2010-06-04 10:55:52.476] system-artifacts <DE0000I> Installing bundle 'org.springframework.osgi.core' version '1.2.1'.
| + | |
− | [2010-06-04 10:55:52.594] system-artifacts <DE0000I> Installing bundle 'org.springframework.osgi.extender' version '1.2.1'.
| + | |
− | [2010-06-04 10:55:52.612] system-artifacts <DE0000I> Installing bundle 'org.springframework.osgi.io' version '1.2.1'.
| + | |
− | [2010-06-04 10:55:52.631] system-artifacts <DE0000I> Installing bundle 'org.eclipse.virgo.kernel.agent.dm' version '2.1.0.D-20100513120258'.
| + | |
− | [2010-06-04 10:55:52.666] system-artifacts <DE0000I> Installing bundle 'org.eclipse.virgo.kernel.deployer.dm' version '2.1.0.D-20100513120258'.
| + | |
− | [2010-06-04 10:55:54.129] system-artifacts <DE0001I> Installed bundle 'org.springframework.osgi.core' version '1.2.1'.
| + | |
− | [2010-06-04 10:55:54.133] system-artifacts <DE0001I> Installed bundle 'org.springframework.osgi.extender' version '1.2.1'.
| + | |
− | [2010-06-04 10:55:54.137] system-artifacts <DE0001I> Installed bundle 'org.springframework.osgi.io' version '1.2.1'.
| + | |
− | [2010-06-04 10:55:54.141] system-artifacts <DE0001I> Installed bundle 'org.eclipse.virgo.kernel.agent.dm' version '2.1.0.D-20100513120258'.
| + | |
− | [2010-06-04 10:55:54.145] system-artifacts <DE0001I> Installed bundle 'org.eclipse.virgo.kernel.deployer.dm' version '2.1.0.D-20100513120258'.
| + | |
− | [2010-06-04 10:55:54.149] system-artifacts <DE0001I> Installed plan 'org.eclipse.virgo.kernel.userregion.springdm' version '2.1.0'.
| + | |
− | [2010-06-04 10:55:54.183] system-artifacts <DE0004I> Starting plan 'org.eclipse.virgo.kernel.userregion.springdm' version '2.1.0'.
| + | |
− | [2010-06-04 10:55:54.199] system-artifacts <DE0004I> Starting bundle 'org.springframework.osgi.core' version '1.2.1'.
| + | |
− | [2010-06-04 10:55:54.209] start-signalling-1 <DE0005I> Started bundle 'org.springframework.osgi.core' version '1.2.1'.
| + | |
− | [2010-06-04 10:55:54.209] system-artifacts <DE0004I> Starting bundle 'org.springframework.osgi.extender' version '1.2.1'.
| + | |
− | [2010-06-04 10:55:54.660] start-signalling-1 <DE0005I> Started bundle 'org.springframework.osgi.extender' version '1.2.1'.
| + | |
− | [2010-06-04 10:55:54.661] system-artifacts <DE0004I> Starting bundle 'org.springframework.osgi.io' version '1.2.1'.
| + | |
− | [2010-06-04 10:55:54.670] start-signalling-1 <DE0005I> Started bundle 'org.springframework.osgi.io' version '1.2.1'.
| + | |
− | [2010-06-04 10:55:54.670] system-artifacts <DE0004I> Starting bundle 'org.eclipse.virgo.kernel.agent.dm' version '2.1.0.D-20100513120258'.
| + | |
− | [2010-06-04 10:55:54.688] start-signalling-1 <DE0005I> Started bundle 'org.eclipse.virgo.kernel.agent.dm' version '2.1.0.D-20100513120258'.
| + | |
− | [2010-06-04 10:55:54.688] system-artifacts <DE0004I> Starting bundle 'org.eclipse.virgo.kernel.deployer.dm' version '2.1.0.D-20100513120258'.
| + | |
− | [2010-06-04 10:55:54.813] start-signalling-1 <DE0005I> Started bundle 'org.eclipse.virgo.kernel.deployer.dm' version '2.1.0.D-20100513120258'.
| + | |
− | [2010-06-04 10:55:54.818] start-signalling-1 <DE0005I> Started plan 'org.eclipse.virgo.kernel.userregion.springdm' version '2.1.0'.
| + | |
− | [2010-06-04 10:55:54.878] system-artifacts <DE0000I> Installing plan 'org.eclipse.virgo.web' version '2.0.0'.
| + | |
− | [2010-06-04 10:55:54.922] system-artifacts <DE0000I> Installing bundle 'org.eclipse.gemini.web.core' version '1.0.0.BUILD-20100330115713'.
| + | |
− | [2010-06-04 10:55:54.953] system-artifacts <DE0000I> Installing bundle 'org.eclipse.gemini.web.tomcat' version '1.0.0.BUILD-20100330115713'.
| + | |
− | [2010-06-04 10:55:54.969] system-artifacts <DE0000I> Installing bundle 'org.eclipse.virgo.web.core' version '2.1.0.D-20100513122450'.
| + | |
− | [2010-06-04 10:55:54.982] system-artifacts <DE0000I> Installing bundle 'org.eclipse.virgo.web.dm' version '2.1.0.D-20100513122450'.
| + | |
− | [2010-06-04 10:55:54.997] system-artifacts <DE0000I> Installing bundle 'org.eclipse.virgo.web.tomcat' version '2.1.0.D-20100513122450'.
| + | |
− | [2010-06-04 10:55:55.487] system-artifacts <DE0001I> Installed bundle 'org.eclipse.gemini.web.core' version '1.0.0.BUILD-20100330115713'.
| + | |
− | [2010-06-04 10:55:55.492] system-artifacts <DE0001I> Installed bundle 'org.eclipse.gemini.web.tomcat' version '1.0.0.BUILD-20100330115713'.
| + | |
− | [2010-06-04 10:55:55.497] system-artifacts <DE0001I> Installed bundle 'org.eclipse.virgo.web.core' version '2.1.0.D-20100513122450'.
| + | |
− | [2010-06-04 10:55:55.502] system-artifacts <DE0001I> Installed bundle 'org.eclipse.virgo.web.dm' version '2.1.0.D-20100513122450'.
| + | |
− | [2010-06-04 10:55:55.507] system-artifacts <DE0001I> Installed bundle 'org.eclipse.virgo.web.tomcat' version '2.1.0.D-20100513122450'.
| + | |
− | [2010-06-04 10:55:55.512] system-artifacts <DE0001I> Installed plan 'org.eclipse.virgo.web' version '2.0.0'.
| + | |
− | [2010-06-04 10:55:55.540] system-artifacts <DE0004I> Starting plan 'org.eclipse.virgo.web' version '2.0.0'.
| + | |
− | [2010-06-04 10:55:55.546] system-artifacts <DE0004I> Starting bundle 'org.eclipse.gemini.web.core' version '1.0.0.BUILD-20100330115713'.
| + | |
− | [2010-06-04 10:55:55.575] start-signalling-1 <DE0005I> Started bundle 'org.eclipse.gemini.web.core' version '1.0.0.BUILD-20100330115713'.
| + | |
− | [2010-06-04 10:55:55.576] system-artifacts <DE0004I> Starting bundle 'org.eclipse.gemini.web.tomcat' version '1.0.0.BUILD-20100330115713'.
| + | |
− | [2010-06-04 10:55:56.081] system-artifacts <TC0000I> Starting Tomcat.
| + | |
− | [2010-06-04 10:55:56.155] system-artifacts <TC0010I> Creating HTTP/1.1 connector with scheme http on port 8080.
| + | |
− | [2010-06-04 10:55:56.180] system-artifacts <TC0010I> Creating HTTP/1.1 connector with scheme https on port 8443.
| + | |
− | [2010-06-04 10:55:56.191] system-artifacts <TC0010I> Creating AJP/1.3 connector with scheme http on port 8009.
| + | |
− | [2010-06-04 10:55:56.252] system-artifacts <TC0001I> Started Tomcat.
| + | |
− | [2010-06-04 10:55:56.269] system-artifacts <DE0004I> Starting bundle 'org.eclipse.virgo.web.core' version '2.1.0.D-20100513122450'.
| + | |
− | [2010-06-04 10:55:56.281] system-artifacts <DE0004I> Starting bundle 'org.eclipse.virgo.web.dm' version '2.1.0.D-20100513122450'.
| + | |
− | [2010-06-04 10:55:56.294] system-artifacts <DE0005I> Started bundle 'org.eclipse.virgo.web.tomcat' version '2.1.0.D-20100513122450'.
| + | |
− | [2010-06-04 10:55:56.311] start-signalling-1 <DE0005I> Started bundle 'org.eclipse.virgo.web.dm' version '2.1.0.D-20100513122450'.
| + | |
− | [2010-06-04 10:55:56.454] start-signalling-1 <DE0005I> Started bundle 'org.eclipse.gemini.web.tomcat' version '1.0.0.BUILD-20100330115713'.
| + | |
− | [2010-06-04 10:55:56.465] start-signalling-1 <DE0005I> Started bundle 'org.eclipse.virgo.web.core' version '2.1.0.D-20100513122450'.
| + | |
− | [2010-06-04 10:55:56.470] start-signalling-1 <DE0005I> Started plan 'org.eclipse.virgo.web' version '2.0.0'.
| + | |
− | [2010-06-04 10:55:56.476] Thread-2 <UR0001I> User region ready.
| + | |
− | [2010-06-04 10:55:57.482] fs-watcher <HD0001I> Hot deployer processing 'INITIAL' event for file 'org.eclipse.virgo.apps.admin-2.1.0.D-20100513124429.plan'.
| + | |
− | [2010-06-04 10:55:57.563] fs-watcher <DE0000I> Installing plan 'org.eclipse.virgo.apps.admin.plan' version '2.0.0'.
| + | |
− | [2010-06-04 10:55:57.597] fs-watcher <DE0000I> Installing bundle 'org.eclipse.virgo.apps.admin.core' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:55:59.235] fs-watcher <DE0000I> Installing bundle 'org.eclipse.virgo.apps.admin.web' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:01.872] fs-watcher <DE0001I> Installed bundle 'org.eclipse.virgo.apps.admin.core' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:01.877] fs-watcher <DE0001I> Installed bundle 'org.eclipse.virgo.apps.admin.web' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:01.881] fs-watcher <DE0001I> Installed plan 'org.eclipse.virgo.apps.admin.plan' version '2.0.0'.
| + | |
− | [2010-06-04 10:56:01.892] fs-watcher <DE0004I> Starting plan 'org.eclipse.virgo.apps.admin.plan' version '2.0.0'.
| + | |
− | [2010-06-04 10:56:01.897] fs-watcher <DE0004I> Starting bundle 'org.eclipse.virgo.apps.admin.core' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:02.064] fs-watcher <DE0004I> Starting bundle 'org.eclipse.virgo.apps.admin.web' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:02.077] Thread-3 <WE0000I> Starting web bundle 'org.eclipse.virgo.apps.admin.web' version '2.1.0.D-20100513124429' with context path '/admin'.
| + | |
− | [2010-06-04 10:56:02.077] fs-watcher <HD0001I> Hot deployer processing 'INITIAL' event for file 'org.eclipse.virgo.apps.repository-2.1.0.D-20100513124429.par'.
| + | |
− | [2010-06-04 10:56:02.121] start-signalling-2 <DE0005I> Started bundle 'org.eclipse.virgo.apps.admin.core' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:02.273] fs-watcher <DE0000I> Installing par 'org.eclipse.virgo.apps.repository' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:02.293] fs-watcher <DE0000I> Installing bundle 'org.eclipse.virgo.apps.repository-2.1.0.D-20100513124429-org.eclipse.virgo.apps.repository.core' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:02.300] fs-watcher <DE0000I> Installing bundle 'org.eclipse.virgo.apps.repository-2.1.0.D-20100513124429-org.eclipse.virgo.apps.repository.web' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:02.656] fs-watcher <DE0001I> Installed bundle 'org.eclipse.virgo.apps.repository-2.1.0.D-20100513124429-org.eclipse.virgo.apps.repository.core' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:02.660] fs-watcher <DE0001I> Installed bundle 'org.eclipse.virgo.apps.repository-2.1.0.D-20100513124429-org.eclipse.virgo.apps.repository.web' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:02.665] fs-watcher <DE0001I> Installed bundle 'org.eclipse.virgo.apps.repository-2.1.0.D-20100513124429-synthetic.context' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:02.669] fs-watcher <DE0001I> Installed par 'org.eclipse.virgo.apps.repository' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:02.721] fs-watcher <DE0004I> Starting par 'org.eclipse.virgo.apps.repository' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:02.728] fs-watcher <DE0004I> Starting bundle 'org.eclipse.virgo.apps.repository-2.1.0.D-20100513124429-org.eclipse.virgo.apps.repository.core' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:02.894] fs-watcher <DE0004I> Starting bundle 'org.eclipse.virgo.apps.repository-2.1.0.D-20100513124429-org.eclipse.virgo.apps.repository.web' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:02.900] Thread-3 <WE0000I> Starting web bundle 'org.eclipse.virgo.apps.repository-2.1.0.D-20100513124429-org.eclipse.virgo.apps.repository.web' version '2.1.0.D-20100513124429' with context path '/org.eclipse.virgo.apps.repository'.
| + | |
− | [2010-06-04 10:56:02.900] fs-watcher <DE0004I> Starting bundle 'org.eclipse.virgo.apps.repository-2.1.0.D-20100513124429-synthetic.context' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:02.909] start-signalling-3 <DE0005I> Started bundle 'org.eclipse.virgo.apps.repository-2.1.0.D-20100513124429-synthetic.context' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:02.944] fs-watcher <HD0001I> Hot deployer processing 'INITIAL' event for file 'org.eclipse.virgo.apps.splash-2.1.0.D-20100513124429.war'.
| + | |
− | [2010-06-04 10:56:03.148] fs-watcher <DE0000I> Installing bundle 'org.eclipse.virgo.apps.splash' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:03.246] start-signalling-3 <DE0005I> Started bundle 'org.eclipse.virgo.apps.repository-2.1.0.D-20100513124429-org.eclipse.virgo.apps.repository.core' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:03.284] fs-watcher <DE0001I> Installed bundle 'org.eclipse.virgo.apps.splash' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:03.384] fs-watcher <DE0004I> Starting bundle 'org.eclipse.virgo.apps.splash' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:03.388] Thread-3 <WE0000I> Starting web bundle 'org.eclipse.virgo.apps.splash' version '2.1.0.D-20100513124429' with context path '/'.
| + | |
− | [2010-06-04 10:56:03.764] Thread-3 <WE0001I> Started web bundle 'org.eclipse.virgo.apps.admin.web' version '2.1.0.D-20100513124429' with context path '/admin'.
| + | |
− | [2010-06-04 10:56:03.774] start-signalling-1 <DE0005I> Started bundle 'org.eclipse.virgo.apps.admin.web' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:03.783] start-signalling-1 <DE0005I> Started plan 'org.eclipse.virgo.apps.admin.plan' version '2.0.0'.
| + | |
− | [2010-06-04 10:56:03.936] Thread-3 <WE0001I> Started web bundle 'org.eclipse.virgo.apps.splash' version '2.1.0.D-20100513124429' with context path '/'.
| + | |
− | [2010-06-04 10:56:03.941] start-signalling-3 <DE0005I> Started bundle 'org.eclipse.virgo.apps.splash' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:04.313] Thread-3 <WE0001I> Started web bundle 'org.eclipse.virgo.apps.repository-2.1.0.D-20100513124429-org.eclipse.virgo.apps.repository.web' version '2.1.0.D-20100513124429' with context path '/org.eclipse.virgo.apps.repository'.
| + | |
− | [2010-06-04 10:56:04.317] start-signalling-2 <DE0005I> Started bundle 'org.eclipse.virgo.apps.repository-2.1.0.D-20100513124429-org.eclipse.virgo.apps.repository.web' version '2.1.0.D-20100513124429'.
| + | |
− | [2010-06-04 10:56:04.321] start-signalling-2 <DE0005I> Started par 'org.eclipse.virgo.apps.repository' version '2.1.0.D-20100513124429'.
| + | |
− | </pre>
| + | |
− | You can then [http://localhost:8080/admin log in] to the Virgo admin console (user "admin", password "springsource"). You should see the welcome panel of the admin console:<br>[[Image:VirgoAdminConsole.png|center|admin console welcome panel]]
| + | |
− | | + | |
− | You can then examine the features of the admin console. For example, you can explore the artifacts currently installed by clicking on the Artifacts pane and expanding some of the sections marked with '+' signs:
| + | |
− | | + | |
− | [[Image:VirgoAdminConsoleArtifacts.png|center|admin console artifacts pane]]
| + | |
− | | + | |
− | If you want to try deploying a bundle, drop it into the pickup directory:
| + | |
− | <pre>org.eclipse.virgo.web-server/build-web-server/target/package-expanded/virgo-web-server-<version>/pickup
| + | |
− | </pre>
| + | |
− | For example, if you download the trivial test application [http://git.eclipse.org/c/virgo/org.eclipse.virgo.web.git/plain/org.eclipse.virgo.web.test/src/test/apps-static/helloweb.war helloweb.war] and drop it into the pickup directory, the following event log messages are displayed:
| + | |
− | <pre>[2010-06-04 11:25:49.528] fs-watcher <DE0000I> Installing bundle 'helloweb' version '0.0.0'.
| + | |
− | [2010-06-04 11:25:49.594] fs-watcher <DE0001I> Installed bundle 'helloweb' version '0.0.0'.
| + | |
− | [2010-06-04 11:25:49.683] fs-watcher <DE0004I> Starting bundle 'helloweb' version '0.0.0'.
| + | |
− | [2010-06-04 11:25:49.688] Thread-3 <WE0000I> Starting web bundle 'helloweb' version '0.0.0' with context path '/helloweb'.
| + | |
− | [2010-06-04 11:25:49.780] Thread-3 <WE0001I> Started web bundle 'helloweb' version '0.0.0' with context path '/helloweb'.
| + | |
− | [2010-06-04 11:25:49.783] start-signalling-3 <DE0005I> Started bundle 'helloweb' version '0.0.0'.
| + | |
− | </pre>
| + | |
− | and you can then [http://localhost:8080/helloweb invoke] the application or inspect it in the admin console:
| + | |
− | | + | |
− | [[Image:VirgoAdminConsoleHelloWeb.png|center|admin console showing helloweb.war]]<br>
| + | |
| | | |
| = Migration Notes = | | = Migration Notes = |
Suppose you see a need to change Virgo somehow. You can start by raising this on Virgo-Dev or as a bug, but suppose the committers don't dive in and make the change for you. Don't take this personally - Virgo is an active project and there's always more to do than the committers have time for.
That makes the contribution process so much simpler.
In the bug the contributor (that's you) must confirm that they wrote 100% of the code contributed (in particular that none of it is copied from elsewhere), that they have the right to contribute the code to Eclipse (e.g. the employer agrees or the code is produced in personal time and contracts do not assign ownership or copyright to the employer), and that any new files contain the appropriate License header with the contributor (or the employer, as appropriate) as the copyright owner and the contributor as the "initial contributor". (See existing files in the Virgo source code repositories for examples of the copyright and license headers.)
You should probably discuss large contributions (more than 250 lines of code and/or configuration) on the virgo-dev mailing list first so everyone knows what's going on. Small patches and additions (e.g. extra unit tests) can be made with little or no discussion.
Contributions should include unit tests whenever possible and integration tests where appropriate. This ensures that the contributed code is well structured and can be tested as well as avoiding the technical debt of code waiting to be tested. The committers that handle the contribution will assess these criteria.
The following changes in Virgo 2.1.0.x affect users migrating from dm Server 2.0.x:
The Java package names of the code have been renamed from com.springsource or org.eclipse.
Some of these packages are more likely than others to be used by applications. For example, the following web configuration:
The main package changes are shown in the following table although very few of these are likely to impact applications. Users who have modified or extended dm Server are far more likely to be affected.
The kernel shell did not make it through the stringent Eclipse IP process and so Virgo extends the Equinox console instead.
The inline shell is no longer supported and the "-shell" switch on the startup script produces a warning.
The Equinox console is configured in the user region properties file via the osgi.console property with a default value of 2401.
The kernel properties shell.enabled and shell.port are no longer used and are ignored if specified. Remote access to the Equinox console is via telnet (whereas the kernel shell supported ssh).
The service wrapper did not make it through the stringent Eclipse IP process and so is no longer supported. Anyone needing this function will need to create their own service wrapper or take the one from dm Server 2.0.x and doctor it.
Even though the slices project was a prototype, a number of dm Server users found it very useful and asked for it to be made available on Virgo. It is currently being renamed to "snaps" and contributed to Virgo.
There will be a one-time hit for users to migrate from slices to snaps, largely because of the renaming.
The Petclinic and Spring Travel based samples are not provided with snaps as they derive from code whose authorship is not clear.
The Java package names of the code have been renamed from com.springsource.osgi.slices.* or org.eclipse.virgo.snaps.*.
'Slice' is replaced by 'Snap' in class names.
'Slice' is replaced by 'Snap' in manifest headers.
The prefix SL is replaced by the prefix SN.