場景
Docker中部署Jenkins+Pipline流水線基礎語法入門：
https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/139672283
上面介紹了環境搭建以及Pipeline的Jenkinsfile的常用寫法。
如果需要透過Jenkins外掛獲取git相關的資訊，比如上一次提交的SHA，分支名稱等資訊，然後
需要輸出上一次git提交的message的相關資訊，即需要執行git log等的相關sh指令，並獲取指令
返回的結果並輸出。
注：
部落格：
https://blog.csdn.net/badao_liumang_qizhi
實現
1、Jenkinsfile中如何執行Groovy語言指令碼
參考官方文件說明：
https://www.jenkins.io/zh/doc/book/pipeline/syntax/
需要新增script塊
官方示例：
pipeline {
agent any
stages {
stage('Example')
{
steps {
echo 'Hello World'
script {
def browsers = ['chrome', 'firefox']
for (int i = 0; i < browsers.size();
++i) {
echo "Testing the
${browsers[i]} browser"
}
}
}
}
}
}
Jenkinsfile中使用Groovy的異常處理try-catch官方示例
node {
stage('Example') {
try {
sh 'exit
1'
}
catch (exc)
{
echo 'Something failed, I should sound the
klaxons!'
throw
}
}
}
2、Jenkinsfile中如何獲取Jenkins安裝Git外掛後相關git資訊。
需要參考Git-Plugin官方外掛說明文件，直接可透過環境變數獲取
https://wiki.jenkins.io/JENKINS/Git-Plugin.html
外掛所提供的環境變數如下
GIT_COMMIT - SHA of the current
GIT_BRANCH - Name of the remote repository (defaults to
origin), followed by name of the branch currently being used, e.g.
"origin/master" or "origin/foo"
GIT_LOCAL_BRANCH - Name
of the branch on Jenkins. When the "checkout to specific local branch" behavior
is configured, the variable is published. If the behavior is configured as null
or **, the property will contain the resulting local branch name sans the remote
name.
GIT_PREVIOUS_COMMIT - SHA of the previous built
commit from the same branch (not set on first build on a branch)
GIT_PREVIOUS_SUCCESSFUL_COMMIT - SHA of the previous
successfully built commit from the same branch (not set on first build on a
branch)
GIT_URL - Repository remote URL
GIT_URL_N - Repository remote URLs when there are more than
1 remotes, e.g. GIT_URL_1, GIT_URL_2
GIT_AUTHOR_NAME and
GIT_COMMITTER_NAME - The name entered if the "Custom user name/e-mail address"
behaviour is enabled; falls back to the value entered in the Jenkins system
config under "Global Config user.name Value" (if any)
GIT_AUTHOR_EMAIL and GIT_COMMITTER_EMAIL - The email entered
if the "Custom user name/e-mail address" behaviour is enabled; falls back to the
value entered in the Jenkins system config under "Global Config user.email
Value" (if any)
使用示例：
stage('獲取提交資訊') {steps {
script {
try {
def gitPreviousCommit = env.GIT_PREVIOUS_COMMIT
println("gitPreviousCommit: ${gitPreviousCommit}")
def gitCommit = env.GIT_COMMIT
println("gitCommit: ${gitCommit}")
def gitBranch = env.GIT_BRANCH
println("gitBranch: ${gitBranch}")
} catch (Exception ex) {
println("獲取提交資訊異常: ${ex}")
}
}
}
}
3、Pipeline中使用Jenkinsfile獲取script塊中執行sh的結果
首先git中獲取最近一次提交資訊的sh指令為
git log -1 --pretty=format:'%h - %an, %ar : %s'
如何在script中獲取該指令執行的結果並輸出
def commit = sh(returnStdout:
true, script: "git log -1 --pretty=format:'%h - %an, %ar : %s'").trim()
println("獲取提交資訊: ${commit}")
其中script後面跟的是具體sh指令，其它格式固定，commit是自定義的變數
完整示例：
stage('獲取提交資訊') {
steps {
script {
try {
def gitPreviousCommit =
env.GIT_PREVIOUS_COMMIT
println("gitPreviousCommit: ${gitPreviousCommit}")
def gitCommit = env.GIT_COMMIT
println("gitCommit:
${gitCommit}")
def gitBranch =
env.GIT_BRANCH
println("gitBranch: ${gitBranch}")
def commit = sh(returnStdout: true,
script: "git log -1 --pretty=format:'%h - %an, %ar : %s'").trim()
println("獲取提交資訊: ${commit}")
} catch (Exception ex) {
println("獲取提交資訊異常: ${ex}")
}
}
}
}
完整Jenkinsfile示例：
pipeline {
agent any
tools {
maven 'maven'
jdk 'jdk'
}
stages {
stage('獲取提交資訊')
{
steps {
script {
try {
def gitPreviousCommit =
env.GIT_PREVIOUS_COMMIT
println("gitPreviousCommit: ${gitPreviousCommit}")
def gitCommit = env.GIT_COMMIT
println("gitCommit:
${gitCommit}")
def gitBranch =
env.GIT_BRANCH
println("gitBranch: ${gitBranch}")
def commit = sh(returnStdout: true,
script: "git log -1 --pretty=format:'%h - %an, %ar : %s'").trim()
println("獲取提交資訊: ${commit}")
} catch (Exception ex) {
println("獲取提交資訊異常: ${ex}")
}
}
}
}
stage('編譯構建') {
steps
{
echo '編譯構建'
//sh 'mvn clean package -DskipTests'
}
}
}
post {
always {
echo
'構建結束，結果：'
}
success
{
echo '構建成功'
}
failure {
echo
'構建失敗'
}
}
}
示例執行結果
