Regulate kernel build based on kernel job and modules

[lttng-ci.git] / dsl / kernel-lttng-modules.seed.groovy

diff --git a/dsl/kernel-lttng-modules.seed.groovy b/dsl/kernel-lttng-modules.seed.groovy
index e3ee3f0884901e5a7c9ec2566aba865c4c4dedba..5a23065138d7e967cc6f255da2ff2f9f5ef1b3c0 100644 (file)
--- a/dsl/kernel-lttng-modules.seed.groovy
+++ b/dsl/kernel-lttng-modules.seed.groovy
@@ -248,6 +248,7 @@ if ( result.exitValue() == 0 ) {
     // Trigger generations
     def dslTriggerKernel = """\
 import hudson.model.*
+import jenkins.model.*
 import hudson.AbortException
 import hudson.console.HyperlinkNote
 import java.util.concurrent.CancellationException
@@ -257,9 +258,11 @@ import java.util.Random
 Random random = new Random()
 def jobs = hudson.model.Hudson.instance.items
 def fail = false
-def jobStartWith = "dsl-kernel-"
+def jobStartWithKernel = "KERNELPREFIX"
+def jobStartWithModule = "MODULEPREFIX"
 def toBuild = []
 def counter = 0
+def limitQueue = 4
 
 def anotherBuild
 jobs.each { job ->
@@ -288,12 +291,22 @@ hudson.model.Hudson.instance.nodes.each { node ->
 println "Nb of live kernel enabled build node "+ kernelEnabledNode
 
 def ongoingBuild = []
+def q = jenkins.model.Jenkins.getInstance().getQueue() 
 
 while (toBuild.size() != 0) {
-       if(ongoingBuild.size() <= (kernelEnabledNode.intdiv(2))) {
+       // Throttle the build with both the number of current parent task and queued
+       // task.Look for both kernel and downstream module from previous kernel.
+       def queuedTask = q.getItems().findAll {
+               it.task.name.startsWith(jobStartWithKernel) ||
+               it.task.name.startsWith(jobStartWithModule)
+       }
+
+       if ((ongoingBuild.size() <= kernelEnabledNode) && (queuedTask.size() < limitQueue)) {
                def job = toBuild.pop()
                ongoingBuild.push(job.scheduleBuild2(0))
-               println "\\t trigering" + HyperlinkNote.encodeTo('/' + job.url, job.fullDisplayName)
+               println "Currently " + queuedTask.findAll{it.task.name.startsWith(jobStartWithModule).size() + "module jobs are queued"
+               println "Currently " + queuedTask.findAll{it.task.name.startsWith(jobStartWithKernel).size() + "kernel jobs are queued"
+               println "\\t trigering " + HyperlinkNote.encodeTo('/' + job.url, job.fullDisplayName)
        } else {
                Thread.sleep(random.nextInt(120000))
                ongoingBuild.removeAll{ it.isCancelled() || it.isDone() }
@@ -352,6 +365,10 @@ if (fail){
        throw new AbortException("Some job failed")
 }
 """
+
+       dslTriggerKernel = dslTriggerKernel.replaceAll("KERNELPREFIX", kernelPrefix)
+       dslTriggerKernel = dslTriggerKernel.replaceAll("MODULEPREFIX", modulesPrefix)
+       dslTriggerModule = dslTriggerModule.replaceAll("JOBPREFIX",modulesPrefix + separator + branch + separator)
     if (isJenkinsInstance) {
         freeStyleJob("dsl-trigger-kernel") {
             steps {
@@ -365,7 +382,7 @@ if (fail){
                modulesBranches.each { branch ->
                        freeStyleJob("dsl-trigger-module-${branch}") {
                                steps {
-                                       systemGroovyCommand(dslTriggerModule.replaceAll("JOBPREFIX",modulesPrefix + separator + branch + separator))
+                                       systemGroovyCommand(dslTriggerModule)
                                }
                                triggers {
                                        scm('@daily')