当前位置：网站首页>Jenkins pipeline's handling of job parameters

Jenkins pipeline's handling of job parameters

2022-06-28 20:04:00 【51CTO】

List of articles

One 、 Judge whether the parameter value is empty

`1.1. The script content `
`1.2. Execution results `

Two 、 When the value of the parameter is several IP Address , How to extract ？

`2.1. Script `
`2.2. Execution results `

3、 ... and 、 hold Job Parameters are written to /etc/ansible/hosts file

` Script `
` Execution effect `

One 、 Judge whether the parameter value is empty

Job Build with parameterization , Configuration parameters DOCKER_HOST and DB_HOST, Now you need to groovy Determine whether their values are empty in the script
Jenkins Pipeline Yes Job Processing of parameters _ Judge whether the parameter value is empty

`1.1. The script content`

       
       #
       
       !
       
       groovy
       
       def 
       
       jobParamsList 
       
       = [
       
       'DOCKER_HOST',
       
       'DB_HOST']       
       
       // Save the parameters to the list 
       
       for(
       
       param 
       
       in 
       
       jobParamsList)                        
       
       // Traverse the list 
       
{
       
       if(
       
       ! 
       
       this.
       
       "${
       
       param
       
       }")
       
    {
       
       throw 
       
       new 
       
       Exception(
       
       "The param : ${
       
       param
       
       } is empty, please check...")
       
    }
       
}
      
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.

explain ：

      
      
       
       this.DOCKER_HOST    
       
       # Extract parameters DOCKER_HOST Value 
       
       
throw new Exception   
       
       # Throw an exception 
      
      
      
      
       
       1.
       
       2.

`1.2. Execution results`

Jenkins Pipeline Yes Job Processing of parameters _ Judge whether the parameter value is empty _02

Two 、 When the value of the parameter is several IP Address , How to extract ？

Jenkins Pipeline Yes Job Processing of parameters _ Judge whether the parameter value is empty _03

`2.1. Script`

       
       #
       
       !
       
       groovy
       
       def 
       
       dockerIpList
       
       =
       
       this.
       
       DOCKER_HOST.
       
       split(
       
       ",")     
       
       // Separate with commas , And save it in the list 
       
       for (
       
       i
       
       =
       
       0;
       
       i
       
       <
       
       dockerIpList.
       
       size();
       
       i
       
       ++)
       
{
       
       println 
       
       dockerIpList[
       
       i]
       
}
      
1.
2.
3.
4.
5.
6.
7.

explain ：

      
      
       
       dockerIpList.size()   
       
       # Get the length of the list 
      
      
      
      
       
       1.

`2.2. Execution results`

Jenkins Pipeline Yes Job Processing of parameters _pipeline_04

3、 ... and 、 hold Job Parameters are written to /etc/ansible/hosts file

Jenkins Pipeline Yes Job Processing of parameters _ Write parameters to file _05

`Script`

       
       #
       
       !
       
       groovy
       
       def 
       
       filePath 
       
       = 
       
       "/etc/ansible/hosts"
       
       def 
       
       backupPath 
       
       = 
       
       "/etc/ansible/host_bak"
       
       def 
       
       logTime 
       
       = 
       
       new 
       
       Date().
       
       format(
       
       'yyyyMMddHHmmss')               
       
       // Extract current timestamp 
       
       if(
       
       ! 
       
       fileExists(
       
       backupPath)) {
       
       sh 
       
       "mkdir ${
       
       backupPath
       
       }"
       
}
       
       if(
       
       fileExists(
       
       filePath)) {
       
       sh 
       
       "mv ${
       
       filePath
       
       } ${
       
       backupPath
       
       }/hosts_bak_${
       
       logTime
       
       }"       
       
       // perform Shell command 
       
}
       
       outFile 
       
       = 
       
       new 
       
       File(
       
       filePath)                    
       
       // Turn the file into a File class 
       
       def 
       
       dockerIpList
       
       =
       
       this.
       
       DOCKER_HOST.
       
       split(
       
       ",")     
       
       // Separate with commas , And save it in the list 
       
       outFile.
       
       append(
       
       '['
       
       +
       
       'DOCKER_HOST'
       
       +
       
       ']\n')          
       
       // If the file doesn't exist , Will create 
       
       for (
       
       ip 
       
       in 
       
       dockerIpList) {
       
       outFile.
       
       append(
       
       ip
       
       +
       
       '\n')
       
}
      
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.