I am using Jenkins configuration as code (CASC) plugin to create Jenkins job during server startup inside docker. I wrote a shell script as a step inside a job configuration.
- script: >
freeStyleJob('jenkins-job-sample') {
description('Sample')
triggers {
githubPush()
}
scm {
git {
remote {
url('${GIT_URL}')
credentials('github-credentials')
}
branch '*/dev'
extensions {localBranch('dev')}
}
}
steps {
shell("""
do
cat \$OUTPUT | while read line || [[ -n \$line ]];
do
CAPP_ENTRY=\$line
GROUP_ID_PATH=(\${CAPP_ENTRY[0]})
ARTIFACT_ID=(\${CAPP_ENTRY[1]})
VERSION=(\${CAPP_ENTRY[2]})
done
done
""")
}
publishers {
}
}
After the job is created I want the final script step to be shown as below.
CAPP_ENTRY=\$line
GROUP_ID_PATH=(${CAPP_ENTRY[0]})
ARTIFACT_ID=(${CAPP_ENTRY[1]})
VERSION=(${CAPP_ENTRY[2]})
But during server startup it throws the following error.
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed: script: 31: unexpected char: '\' @ line 31, column 34.
GROUP_ID_PATH=(\)
^
1 error
at org.codehaus.groovy.control.ErrorCollector.failIfErrors(ErrorCollector.java:310) at org.codehaus.groovy.control.ErrorCollector.addFatalError(ErrorCollector.java:150) at org.codehaus.groovy.control.ErrorCollector.addError(ErrorCollector.java:120) at org.codehaus.groovy.control.ErrorCollector.addError(ErrorCollector.java:132) at org.codehaus.groovy.control.SourceUnit.addError(SourceUnit.java:350) at org.codehaus.groovy.antlr.AntlrParserPlugin.transformCSTIntoAST(AntlrParserPlugin.java:139) at org.codehaus.groovy.antlr.AntlrParserPlugin.parseCST(AntlrParserPlugin.java:110) at org.codehaus.groovy.control.SourceUnit.parse(SourceUnit.java:234) at org.codehaus.groovy.control.CompilationUnit$1.call(CompilationUnit.java:168) at org.codehaus.groovy.control.CompilationUnit.applyToSourceUnits(CompilationUnit.java:943) at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:605) at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:581) at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:558) at groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:298) at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:268) at groovy.lang.GroovyShell.parseClass(GroovyShell.java:688) at groovy.lang.GroovyShell.parse(GroovyShell.java:700) at groovy.lang.GroovyShell$parse.call(Unknown Source) at javaposse.jobdsl.dsl.AbstractDslScriptLoader.parseScript(AbstractDslScriptLoader.groovy:134) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite$PogoCachedMethodSiteNoUnwrapNoCoerce.invoke(PogoMetaMethodSite.java:210) at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite.callCurrent(PogoMetaMethodSite.java:59) at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:174) at
javaposse.jobdsl.dsl.AbstractDslScriptLoader.runScriptEngine(AbstractDslScriptLoader.groovy:101)
It seems that ${CAPP_ENTRY[0]} is getting evaluated before the job creation happens which results to be (\). I want to escape ${} from getting evaluated before job creation. I tried in below ways.
GROUP_ID_PATH=(\${CAPP_ENTRY[0]})GROUP_ID_PATH=(\$\{CAPP_ENTRY[0]})GROUP_ID_PATH=(\"${CAPP_ENTRY[0]}\")None of the above worked. Highly appreciate any suggestions on how I can escape it from getting evaluated.
Found an answer. Adding a ^ solved my issue. :) (^${CAPP_ENTRY[0]})
Source: https://github.com/jenkinsci/configuration-as-code-plugin/issues/577