错误:并行步骤只能作为唯一的顶级步骤 [英] Error: The parallel step can only be used as the only top-level step
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问题描述
当我使用这个脚本时，它会按预期工作:
When I use this script it works as expected:
stage("B") {
parallel (
'C' : {
stage ("BC") {
parallel (
'E' : {
stage("Many") {
println "E1"
println "E2"
}
},
'F' : { println "F" }
)
}
},
'D' : { println "D" }
)
}
但是如果包含在管道块中，它会失败并出现错误使用了无效的步骤‘阶段’ - 在此上下文中不允许 - 阶段步骤不能在管道中的步骤块中使用"
But if enclosed in a pipeline block it fails with an Error "Invalid step 'stage' used - not allowed in this context - The stage step cannot be used in step blocks in Pipeline"
pipeline {
agent label:"debian"
stages {
stage("B") {
parallel (
'C' : {
stage ("BC") {
parallel (
'E' : {
stage("Many") {
println "E1"
println "E2"
}
},
'F' : { println "F" }
)
}
},
'D' : { println "D" }
)
}
}
}
知道为什么吗?
推荐答案
如您所见，嵌套阶段本身不能在声明性管道中包含更多并行阶段.
As you can see nested stages cannot contain further parallel stages themselves in declarative pipelines.
我还认为将并行与脚本管道结合使用是一个坏主意，因为它无法在蓝海中正确显示.
I also think it's a bad idea to use parallel in parallel in combination with scripted pipelines because it cannot be displayed correctly in blue ocean.
例如:
import java.text.SimpleDateFormat
node() {
stage('Build') {
parallel (
"win7-vs2012" : {
stage("checkout (win7-vs2012)") {
println 'checkout Win'
sleep(20)
println(new SimpleDateFormat("HH:mm:ss").format(new Date()))
};
stage("build (win7-vs2012)") {
println 'Build Win'
sleep(45)
println(new SimpleDateFormat("HH:mm:ss").format(new Date()))
};
stage("test (win7-vs2012)") {
parallel (
"test1 (win7-vs2012)" : {
stage("test1 (win7-vs2012)") {
println 'TestRunner 1'
sleep(1)
println(new SimpleDateFormat("HH:mm:ss").format(new Date()))
}
},
"test2 (win7-vs2012)" : {
stage("test2 (win7-vs2012)") {
println 'TestRunner 2'
sleep(1)
println(new SimpleDateFormat("HH:mm:ss").format(new Date()))
}
},
"test3 (win7-vs2012)" : {
stage("test3 (win7-vs2012)") {
println 'TestRunner 3'
sleep(1)
println(new SimpleDateFormat("HH:mm:ss").format(new Date()))
}
}
)
}
},
"win10-vs2015" : {
stage("checkout (win10-vs2015)") {
println 'checkout Win'
sleep(15)
println(new SimpleDateFormat("HH:mm:ss").format(new Date()))
};
stage("build (win10-vs2015)") {
println 'Build Win'
sleep(40)
println(new SimpleDateFormat("HH:mm:ss").format(new Date()))
};
stage("test (win10-vs2015)") {
parallel (
"test1 (win10-vs2015)" : {
stage("test1 (win10-vs2015)") {
println 'TestRunner 1'
sleep(1)
println(new SimpleDateFormat("HH:mm:ss").format(new Date()))
}
},
"test2 (win10-vs2015)" : {
stage("test2 (win10-vs2015)") {
println 'TestRunner 2'
sleep(1)
println(new SimpleDateFormat("HH:mm:ss").format(new Date()))
}
},
"test3 (win10-vs2015)" : {
stage("test3 (win10-vs2015)") {
println 'TestRunner 3'
sleep(1)
println(new SimpleDateFormat("HH:mm:ss").format(new Date()))
}
}
)
}
},
"linux-gcc5" : {
stage("checkout (linux-gcc5)") {
println 'checkout Win'
sleep(10)
println(new SimpleDateFormat("HH:mm:ss").format(new Date()))
};
stage("build (linux-gcc5)") {
println 'Build Win'
sleep(20)
println(new SimpleDateFormat("HH:mm:ss").format(new Date()))
};
stage("test (linux-gcc5)") {
parallel (
"test1 (linux-gcc5)" : {
stage("test1 (linux-gcc5)") {
println 'TestRunner 1'
sleep(2)
println(new SimpleDateFormat("HH:mm:ss").format(new Date()))
}
},
"test2 (linux-gcc5)" : {
stage("test2 (linux-gcc5)") {
println 'TestRunner 2'
sleep(2)
println(new SimpleDateFormat("HH:mm:ss").format(new Date()))
}
},
"test3 (linux-gcc5)" : {
stage("test3 (linux-gcc5)") {
println 'TestRunner 3'
sleep(2)
println(new SimpleDateFormat("HH:mm:ss").format(new Date()))
}
}
)
}
},
)
}
}
被解释为:
但通常有很好的解决方法.我建议在并行阶段触发一个新的 build.
But as so often there are good workarounds. I would recommend to trigger a new build in a parallel stage.
pipeline {
agent none
stages {
stage("Example") {
failFast true
parallel {
stage("win7-vs2012") {
agent {
label "win7-vs2012"
}
stages {
stage("checkout (win7-vs2012)") {
steps {
echo "win7-vs2012 checkout"
}
}
stage("build (win7-vs2012)") {
steps {
echo "win7-vs2012 build"
}
}
stage("test (win7-vs2012)") {
steps {
build 'test-win7-vs2012'
}
}
}
}
stage("win10-vs2015") {
agent {
label "win10-vs2015"
}
stages {
stage("checkout (win10-vs2015)") {
steps {
echo "win10-vs2015 checkout"
}
}
stage("build (win10-vs2015)") {
steps {
echo "win10-vs2015 build"
}
}
stage("test (win10-vs2015)") {
steps {
build 'test-win10-vs2015'
}
}
}
}
stage("linux-gcc5") {
agent {
label "linux-gcc5"
}
stages {
stage("checkout (linux-gcc5)") {
steps {
echo "linux-gcc5 checkout"
}
}
stage("build (linux-gcc5)") {
steps {
echo "linux-gcc5 build"
}
}
stage("test (linux-gcc5)") {
steps {
build 'test-linux-gcc5'
}
}
}
}
}
}
}
}
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