英文:
Jenkins - prevent a pipeline/job from being triggered by multiple upstream projects -restrict one build to one upstream project
问题
我在网上进行了很多搜索，但没有找到答案。
我们有两个项目A和B，它们作为其管道步骤触发一个共同的项目C。
现在，如果A触发了C（共同项目），而B也在大致相同的时间触发了C，那么C只会运行一个构建，其结果将被A和B同时使用。C中的构建状态显示"由上游项目A启动"和"由上游项目B启动"。
我如何使项目C首先完成由A触发的构建，然后开始由B触发的新构建？
英文:
I searched a lot online but did not find an answer to this.
We have two projects A and B, which trigger a common project C as it's pipeline step.
Now if A has triggered C (common project), and B also triggers C at around the same time, only one build of C is run and the result is consumed by both A and B. The build status in C shows "Started by upstream project A" and "Started by upstream project B" both.
How do I make project C first complete the build triggered by A and then start a new build for the trigger by B?
答案1
得分: 1
这是发生在启用了“不允许并发构建”时的情况，除非Jenkins将运行视为唯一的运行，否则不会将其他作业排队。Jenkins会认为您尝试多次运行相同的作业。为了欺骗Jenkins，您需要在每次触发作业时更改一个参数，如果使用相同的参数，Jenkins会认为它是相同的作业。因此，在目标作业C中引入一个新的参数，并可能传递一些随机值，使其变得唯一。
在目标作业C中：
string(name: 'UniqueString', defaultValue: 'o', description: 'something')
在触发作业A和B时，传递一些随机值，我正在传递：
def randomValue = "${JOB_NAME}-${BUILD_ID}"
build wait: false, job: 'otherjob', parameters: [ string(name: 'UniqueString', value: "$randomValue")
...
]
英文:
This happens when you have enabled Do not allow concurrent builds, unless Jenkins sees the run as a unique run it will not queue additional Jobs, Jenkins will think you are trying to run the same Job multiple times. In order to trick Jenkins you need to change a parameter each time you trigger the Job, If you use the same parameters it will think it's the same Job. So introduce a new Parameter in the target JOb (Job C) and maybe pass some random value to that which will make it unique.
In the target Job C
string(name: 'UniqueString', defaultValue: 'o', description: 'something')
In the Triggering Job A and B. Pass some random value, I'm passing
def randomValue = "${JOB_NAME}-${BUILD_ID}"
build wait: false, job: 'otherjob', parameters: [ string(name: 'UniqueString',value: "$randomValue")
...
]
答案2
得分: 0
我通过在Jenkins中使用可锁资源插件来解决了我的问题。
因此，项目A和B的Jenkinsfile如下所示：
pipeline {
agent { ... }
stages {
stage('Invoke project C') {
steps {
lock('project-c-lock') {
script {
...
...
}
}
}
}
}
因此，这个步骤只执行一次，并进行同步。具有相同的锁定资源名称非常重要。
英文:
I solved my issue by using the lockable resource plugin in Jenkins.
So my Jenkinsfile for projects A and B look like this
pipeline {
agent { ... }
stages {
stage('Invoke project C') {
steps {
lock('project-c-lock') {
script {
...
...
}
}
}
}
}
Thus this step is executed only once and synchronization takes place. It's important to have the same lock resource name.
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