CCNet的整体结构就是一个Xml文档,根元素就是cruisecontrol,具体的代码块如下所示:
- <cruisecontrol xmlns:cb="urn:ccnet.config.builder">
- <project name="P1">
- <other settings />
- </project>
- <project name="P2">
- <other settings />
- </project>
- </cruisecontrol>
<cruisecontrol xmlns:cb="urn:ccnet.config.builder"> <project name="P1"> <other settings /> </project> <project name="P2"> <other settings /> </project> </cruisecontrol>
其中,命名空间标定了CCNet里面的预处理过程(Preprocessor)。
一、预处理:Preprocessor
预处理里面包含三个主要元素:define、include和scope,define用于定义以后扩展的常量、include用于包含其他文件的类容,而scope用于封装现存的常量的值。
1、define元素
define元素可以用来定义一个预处理(Preprocessor)常量。如下所示:
- <cb:define foo="bar" />
<cb:define foo="bar" />
也可以在一行中定义多个常量:
- <cb:define a="1" b="2" c="3"/>
<cb:define a="1" b="2" c="3"/>
还可以定义一个xml段:
- <cb:define name="baz">
- <some_element>
- <some_inner_element/>
- </some_element>
- </cb:define>
<cb:define name="baz"> <some_element> <some_inner_element/> </some_element> </cb:define>
任何有效的xml代码元素都可以包含其中,包括元素、属性、文本节点和注释等。
有两种方式来使用定义的常量:文本引用和xml引用
1)、文本引用的方式如下:$(const_name)
如果常量未定义,系统将搜索系统变量来替换;如果系统变量也不存在,将引发错误。
- <pre><code class="xml syntaxhl"><span class="CodeRay"><span class="tag"><cb:define</span> <span class="attribute-name">foo</span>=<span class="string"><span class="delimiter">"</span><span class="content">bar</span><span class="delimiter">"</span></span><span class="tag">/></span></span></code>
<pre><code class="xml syntaxhl"><span class="CodeRay"><span class="tag"><cb:define</span> <span class="attribute-name">foo</span>=<span class="string"><span class="delimiter">"</span><span class="content">bar</span><span class="delimiter">"</span></span><span class="tag">/></span></span></code>
<somexml attr1="$(foo)"/>
<somexml>$(foo)</somexml>
<env dir="$(PATH)"/>
2)、xml引用的方式如下:
如果常量未定义,系统将搜索系统变量来替换;如果系统变量也不存在,将引发错误。
- <cb:define foo="bar"/>
- <sample>
- <cb:foo/>
- </sample>
<cb:define foo="bar"/> <sample> <cb:foo/> </sample>
其效果是直接替换被引用的值,上面结果如下:
- <sample>
- bar
- </sample>
<sample> bar </sample>
3)、常量的嵌套以及参数
常量引用可以嵌套使用,如下所示:
- <cb:define alpha="alphaval"/>
- <cb:define zed="zedval/$(alpha)"/>
- <z>$(zed)</z>
<cb:define alpha="alphaval"/> <cb:define zed="zedval/$(alpha)"/> <z>$(zed)</z>
在高层次的嵌套时,在cb:varname这种语法中,常量值是可以传递到调用的元素中去的,如下面的例子:
- <cb:define name="beta">
- <hello>
- <cb:gamma/>
- <hi attr1="$(delta)"/>
- </hello>
- </cb:define>
<cb:define name="beta"> <hello> <cb:gamma/> <hi attr1="$(delta)"/> </hello> </cb:define>
此时的gamma和delta都还没有定义
- <cb:beta delta="deltaval">
- <cb:define name="gamma">
- <gamma_element>hi</gamma_element>
- </cb:define>
- </cb:beta>
<cb:beta delta="deltaval"> <cb:define name="gamma"> <gamma_element>hi</gamma_element> </cb:define> </cb:beta>
在定义了如下xml段之后,gamma就可以正常被替换了,而且上面没有定义的delta常量,也会通过cb:deta定义的delta常量所替换。最终结果如下:
- <hello>
- <gamma_element>hi</gamma_element>
- <hi attr1="deltaval" />
- </hello>
<hello> <gamma_element>hi</gamma_element> <hi attr1="deltaval" /> </hello>
2、Scope元素
Scope用于控制预处理定义中的范围,在同一个范围里面不可以定义相同的常量,但是在嵌套的范围里面,可以覆盖外层定义的常量,这一点和程序里面的代码段很像。
如下定义:
- <cb:scope a="a_val" b="b_val">
- <test attr="$(a)" attr2="$(b)"/>
- <cb:scope a="a_val_redefined">
- <test attr="$(a)" attr2="$(b)"/>
- </cb:scope>
- </cb:scope>
<cb:scope a="a_val" b="b_val"> <test attr="$(a)" attr2="$(b)"/> <cb:scope a="a_val_redefined"> <test attr="$(a)" attr2="$(b)"/> </cb:scope> </cb:scope>
其结果为:
- <test attr="a_val" att2="b_val"/>
- <test attr="a_val_redefined" att2="b_val"/>
<test attr="a_val" att2="b_val"/> <test attr="a_val_redefined" att2="b_val"/>
其中就覆盖了外层的a常量。
可以将scope应用于CCNet配置文件的Project元素,示例如下:
- <cruisecontrol xmlns:cb="urn:ccnet.config.builder">
- <cb:define WorkingMainDir="C:\Integration\"/>
- <cb:define WorkingDir="\WorkingDirectory"/>
- <cb:define ArtifactsDir="\Artifacts"/>
- <cb:scope ProjectName="Alpha">
- <project name="$(ProjectName)" queue="Q1" queuePriority="1">
- <workingDirectory>$(WorkingMainDir)$(ProjectName)$(WorkingDir)</workingDirectory>
- <artifactDirectory>$(WorkingMainDir)$(ProjectName)$(ArtifactsDir)</artifactDirectory>
- </project>
- </cb:scope>
- <cb:scope ProjectName="Beta">
- <project name="$(ProjectName)" queue="Q1" queuePriority="1">
- <workingDirectory>$(WorkingMainDir)$(ProjectName)$(WorkingDir)</workingDirectory>
- <artifactDirectory>$(WorkingMainDir)$(ProjectName)$(ArtifactsDir)</artifactDirectory>
- </project>
- </cb:scope>
- </cruisecontrol>
<cruisecontrol xmlns:cb="urn:ccnet.config.builder"> <cb:define WorkingMainDir="C:\Integration\"/> <cb:define WorkingDir="\WorkingDirectory"/> <cb:define ArtifactsDir="\Artifacts"/> <cb:scope ProjectName="Alpha"> <project name="$(ProjectName)" queue="Q1" queuePriority="1"> <workingDirectory>$(WorkingMainDir)$(ProjectName)$(WorkingDir)</workingDirectory> <artifactDirectory>$(WorkingMainDir)$(ProjectName)$(ArtifactsDir)</artifactDirectory> </project> </cb:scope> <cb:scope ProjectName="Beta"> <project name="$(ProjectName)" queue="Q1" queuePriority="1"> <workingDirectory>$(WorkingMainDir)$(ProjectName)$(WorkingDir)</workingDirectory> <artifactDirectory>$(WorkingMainDir)$(ProjectName)$(ArtifactsDir)</artifactDirectory> </project> </cb:scope> </cruisecontrol>
而其结果则为:
- <cruisecontrol>
- <project name="Alpha" queue="Q1" queuePriority="1">
- <workingDirectory>C:\Integration\Alpha\WorkingDirectory</workingDirectory>
- <artifactDirectory>C:\Integration\Alpha\Artifacts</artifactDirectory>
- </project>
- <project name="Beta" queue="Q1" queuePriority="1">
- <workingDirectory>C:\Integration\Beta\WorkingDirectory</workingDirectory>
- <artifactDirectory>C:\Integration\Beta\Artifacts</artifactDirectory>
- </project>
- </cruisecontrol>
<cruisecontrol> <project name="Alpha" queue="Q1" queuePriority="1"> <workingDirectory>C:\Integration\Alpha\WorkingDirectory</workingDirectory> <artifactDirectory>C:\Integration\Alpha\Artifacts</artifactDirectory> </project> <project name="Beta" queue="Q1" queuePriority="1"> <workingDirectory>C:\Integration\Beta\WorkingDirectory</workingDirectory> <artifactDirectory>C:\Integration\Beta\Artifacts</artifactDirectory> </project> </cruisecontrol>
通过scope,一个变通的定义方式如下:
- <cruisecontrol xmlns:cb="urn:ccnet.config.builder">
- <cb:define WorkingMainDir="C:\Integration\"/>
- <cb:define WorkingDir="\WorkingDirectory"/>
- <cb:define ArtifactsDir="\Artifacts"/>
- <cb:define name="OurProject">
- <project name="$(ProjectName)" queue="Q1" queuePriority="1">
- <workingDirectory>$(WorkingMainDir)$(ProjectName)$(WorkingDir)</workingDirectory>
- <artifactDirectory>$(WorkingMainDir)$(ProjectName)$(ArtifactsDir)</artifactDirectory>
- </project>
- </cb:define>
- <cb:scope ProjectName="Alpha">
- <cb:OurProject/>
- </cb:scope>
- <cb:scope ProjectName="Beta">
- <cb:OurProject/>
- </cb:scope>
- </cruisecontrol>
<cruisecontrol xmlns:cb="urn:ccnet.config.builder"> <cb:define WorkingMainDir="C:\Integration\"/> <cb:define WorkingDir="\WorkingDirectory"/> <cb:define ArtifactsDir="\Artifacts"/> <cb:define name="OurProject"> <project name="$(ProjectName)" queue="Q1" queuePriority="1"> <workingDirectory>$(WorkingMainDir)$(ProjectName)$(WorkingDir)</workingDirectory> <artifactDirectory>$(WorkingMainDir)$(ProjectName)$(ArtifactsDir)</artifactDirectory> </project> </cb:define> <cb:scope ProjectName="Alpha"> <cb:OurProject/> </cb:scope> <cb:scope ProjectName="Beta"> <cb:OurProject/> </cb:scope> </cruisecontrol>
这样则较大的提高了配置的可维护性。
3、include元素
include元素用来包含其他的文件内容,include中根据ccnet.config文件为基准路径进行相对定位,这样就可以在ccnet.config文件里面调用所有其他文件定义的部分,以提高可维护性。如下所示:
- <cruisecontrol xmlns:cb="urn:ccnet.config.builder">
- <cb:include href="Definitions.xml" xmlns:cb="urn:ccnet.config.builder"/>
- <cb:include href="CI_Projects.xml" xmlns:cb="urn:ccnet.config.builder"/>
- <cb:include href="QA_Projects.xml" xmlns:cb="urn:ccnet.config.builder"/>
- </cruisecontrol>
<cruisecontrol xmlns:cb="urn:ccnet.config.builder"> <cb:include href="Definitions.xml" xmlns:cb="urn:ccnet.config.builder"/> <cb:include href="CI_Projects.xml" xmlns:cb="urn:ccnet.config.builder"/> <cb:include href="QA_Projects.xml" xmlns:cb="urn:ccnet.config.builder"/> </cruisecontrol>
其中Definitions.xml文件定义如下:
- <cb:config-template xmlns:cb="urn:ccnet.config.builder">
- <queue name="Q1" duplicates="UseFirst" lockqueues="Q2, Q4" />
- <cb:define name="EmailPublisher">
- <email from="buildmaster@mycompany.com"
- mailhost="localhost"
- mailhostUsername="TheMailer"
- mailhostPassword="JohnWayne"
- includeDetails="TRUE">
- <users />
- <groups />
- <modifierNotificationTypes>
- <NotificationType>Failed</NotificationType>
- <NotificationType>Fixed</NotificationType>
- </modifierNotificationTypes>
- </email>
- </cb:define>
- <cb:define name="common_publishers">
- <artifactcleanup cleanUpMethod="KeepMaximumXHistoryDataEntries" cleanUpValue="500" />
- <xmllogger />
- <statistics />
- <modificationHistory onlyLogWhenChangesFound="true" />
- <rss/>
- </cb:define>
- <cb:define name="common_nant">
- <executable>c:\nant\nant.exe</executable>
- <nologo>true</nologo>
- <buildTimeoutSeconds>240</buildTimeoutSeconds>
- </cb:define>
- <cb:define name="nant_args_CI">
- <buildArgs>clean compile</buildArgs>
- </cb:define>
- </cb:config-template>
<cb:config-template xmlns:cb="urn:ccnet.config.builder"> <queue name="Q1" duplicates="UseFirst" lockqueues="Q2, Q4" /> <cb:define name="EmailPublisher"> <email from="buildmaster@mycompany.com" mailhost="localhost" mailhostUsername="TheMailer" mailhostPassword="JohnWayne" includeDetails="TRUE"> <users /> <groups /> <modifierNotificationTypes> <NotificationType>Failed</NotificationType> <NotificationType>Fixed</NotificationType> </modifierNotificationTypes> </email> </cb:define> <cb:define name="common_publishers"> <artifactcleanup cleanUpMethod="KeepMaximumXHistoryDataEntries" cleanUpValue="500" /> <xmllogger /> <statistics /> <modificationHistory onlyLogWhenChangesFound="true" /> <rss/> </cb:define> <cb:define name="common_nant"> <executable>c:\nant\nant.exe</executable> <nologo>true</nologo> <buildTimeoutSeconds>240</buildTimeoutSeconds> </cb:define> <cb:define name="nant_args_CI"> <buildArgs>clean compile</buildArgs> </cb:define> </cb:config-template>
在Definitions.xml文件里面,需要使用db:config-template作为根元素使用。
本文转载自:http://blog.****.net/yant255/article/details/43306227