[CI] Add enforce maven plugin to do snapshot version check

[htynkn]

What is the purpose of the change

Creating a jenkins job for deploying snapshot version to apache maven repo.

In order to make everything works well, we need prevent release deploy for this job, so try to add a enforce plugin rule to check all version is snapshot version.

Brief changelog

modify pom.xml and add new enforce plugin

Verifying this change

CI pass with

./mvnw clean validate -Psnapshot-ci-deploy

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[ralf0131]

What command does jenkins job run?

[htynkn]

Jenkins will run

./mvnw clean validate -Psnapshot-ci-deploy

to check all version are snapshot.

And for deployment, it will run

./mvnw clean package deploy -f dubbo-dependencies-bom && ./mvnw clean package deploy -DskipTests=true

And for commit status check will use a groovy script to do

import groovy.json.JsonSlurper
import java.io.File

def env = System.getenv()
def commitId = env["GIT_COMMIT"]

println "Current commit id: $commitId"

String commitStatusJson = new URL("https://api.github.com/repos/apache/dubbo/commits/$commitId/status").text
println "Commit status: \r\n$commitStatusJson"

def jsonSlurper = new JsonSlurper()
def jsonObject = jsonSlurper.parseText(commitStatusJson)

def status = jsonObject.state

println "Current commit status is $status"

if (status == "sucesss") {
    def newFile = new File("CONTINUE_DEPLOY_FLAG")
    newFile.createNewFile() 
    println "Continue to deploy snapshot"
} else {
    println "Current commit status not allow to deploy snapshot"
}

[ralf0131]

So the Jenkins job workflow is:

1. check every 30 min
2. check if the latest commit is built successfully (e.g. CI pass)
3. check if it is a snapshot version
4. deploy the snapshot

Is my understanding correct?

[htynkn]

So the Jenkins job workflow is:

1. check every 30 min
2. check if the latest commit is built successfully (e.g. CI pass)
3. check if it is a snapshot version
4. deploy the snapshot

Is my understanding correct?

Yeah. but for the first one, it will check every 6 hours.
For third one, I will add command after this PR merged

Please refer to latest successfully build: https://builds.apache.org/job/Apache%20Dubbo/job/apache-dubbo-snapshot-deployment/16/

The next step I will try to convert this jenkins job config to a Jenkinsfile(https://jenkins.io/doc/book/pipeline/jenkinsfile/), it will make things more clear and easy to maintain. With Jenkinsfile everyone can see Jenkins job config and send a PR to modify it without Apache account and group access

[ralf0131]

LGTM. Please merge it once CI pass.

[codecov-io]

Codecov Report

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The diff coverage is n/a.

@@            Coverage Diff            @@
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  Coverage          ?   62.89%           
  Complexity        ?      505           
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  Files             ?      768           
  Lines             ?    33064           
  Branches          ?     5220           
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  Hits              ?    20794           
  Misses            ?     9869           
  Partials          ?     2401

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