Azure Devops 管道：访问 xml 文件中的代理 JAVA_HOME 变量

Question

For my java project, I am using azure devops pipeline for building. For configuring the jdkhome path, I am putting it in the toolchains xml file placed in root folder of project:

<toolchain>
    <type>jdk</type>
    <provides>
      <version>1.8</version>
      <vendor>oracle</vendor>
    </provides>
    <configuration>
      <!--<jdkHome>/usr/lib/jvm/zulu-8-azure-amd64</jdkHome>-->
    </configuration>
  </toolchain>

But the azure devops agent has updated their jdk and its failing my build. So, now rather than hardcoding, I want to pick the path from agent. I see that on agent, environment variable is set as $JAVA_HOME_8_X64 with the path assigned to it.

So, how can I use this environment variable in my pipeline weather refer it in toolschain xml file or in some other way?

I tried to directly refer in xml and it did not work. I also tried to add some tasks from marketplace but did not work. Can someone help me with this?

Answer 1

We can use the extension Replace Tokens or Magic Chunks to update the pom.xml file.

pom.xml content:

<toolchain>
    <type>jdk</type>
    <provides>
      <version>1.8</version>
      <vendor>oracle</vendor>
    </provides>
    <configuration>
      <jdkHome>JAVAHOME</jdkHome>
    </configuration>
  </toolchain>

Step:

a . Create a build pipeline A, Open the build pipeline A and add a new variable JAVAHOME and grant test Build Service (xxx) account the Edit build pipeline permission. (open the build pipeline(A)-->... --> Security --> Edit build pipeline set to Allow)

b . enable the feature Allow scripts to access the OAuth token (Click Agent Job Name=>Additional options) add task powershell(update the JAVAHOME value) and enter the script below.

$url = "$($env:SYSTEM_TEAMFOUNDATIONSERVERURI)$env:SYSTEM_TEAMPROJECTID/_apis/build/definitions/{build pipeline A definition ID}?api-version=5.1"
Write-Host "URL: $url"
$pipeline = Invoke-RestMethod -Uri $url -Headers @{
    Authorization = "Bearer $env:SYSTEM_ACCESSTOKEN"
}
Write-Host "Pipeline = $($pipeline | ConvertTo-Json -Depth 100)"

# Update an existing variable named JAVAHOME to its new value JAVA_HOME_11_X64
$pipeline.variables.JAVAHOME.value= $($env:JAVA_HOME_11_X64)
# my sample is get the variable JAVA_HOME_11_X64, please update it to JAVA_HOME_8_X64


####****************** update the modified object **************************

$json = $($pipeline | ConvertTo-Json -Depth 100)


$updatedef = Invoke-RestMethod -Uri $url -Method Put -Body $json -ContentType "application/json" -Headers @{Authorization = "Bearer $env:SYSTEM_ACCESSTOKEN"}

write-host "==========================================================" 
Write-host "The value of Varialbe 'JAVAHOME' is updated to" $updatedef.variables.JAVAHOME.value
write-host "=========================================================="

c . Add task Replace Tokens and configure the task.

d . Add a task powershell and use the code $ourfilesdata = Get-Content "pom.xml" Write-Output $ourfilesdata to output the file content.

Result: