Upgrade of Jackson 2 API plugin to 2.12.0 breaks docker-cloud.

[ymagriso]

After upgrading to odavid/my-bloody-jenkins:2.263.1-235, which includes the upgrade of Jackson 2 API plugin to 2.12.0, I am encountering the following error when trying to build on docker-cloud based nodes:

SEVERE	c.n.j.p.docker.DockerCloud$1#run: Error in provisioning; template='DockerTemplate{configVersion=2, labelString='simple-docker-node', connector=DockerComputerJNLPConnector{jnlpLauncher=hudson.slaves.JNLPLauncher@3af392cd, jenkinsUrl='http://jenkins:8080'}, instanceCap=5, mode=EXCLUSIVE, retentionStrategy=com.nirima.jenkins.plugins.docker.strategy.DockerOnceRetentionStrategy@29, dockerTemplateBase=DockerTemplateBase{image='jenkins-jnlp-slave:latest', network'='some-network-bridge', volumes=[/var/run/docker.sock:/var/run/docker.sock], environment=[TZ=Asia/Jerusalem, http_proxy=http://proxy.company.com:8080, https_proxy=http://proxy.company.com:8080, no_proxy=.company.com,localhost,127.0.0.1], bindAllPorts=false, memoryLimit=0, memorySwap=0, cpuShares=0, privileged=true, tty=false}, removeVolumes=true, stopTimeout=10, pullStrategy=PULL_NEVER, pullTimeout=0, nodeProperties=[hudson.slaves.EnvironmentVariablesNodeProperty@325aea7b], disabled=BySystem,0 ms,4 min 59 sec,Template provisioning failed.}' for cloud='docker-cloud'
com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot construct instance of `com.github.dockerjava.api.model.Volume` (although at least one Creator exists): no String-argument constructor/factory method to deserialize from String value ('/var/run/docker.sock')
at [Source: (byte[])"{"Id":"fec4090ebbb912011c86176a02cac305a9ba0fd3ff66ed70f04398e3a8202569","Created":"2020-12-07T17:32:46.906204069Z","Path":"tiny","Args":["--","/entrypoint.sh","-url","http://jenkins:8080","9bad855083c45465f9a3504fa6c18d6895dea9b9fa402ba304679b72286b5d48","docker-002bqoq26d70a"],"State":{"Status":"running","Running":true,"Paused":false,"Restarting":false,"OOMKilled":false,"Dead":false,"Pid":21229,"ExitCode":0,"Error":"","StartedAt":"2020-12-07T17:32:47.405912845Z","FinishedAt":"0001-01-"[truncated 7816 bytes]; line: 1, column: 4859] (through reference chain: com.github.dockerjava.api.command.InspectContainerResponse["Mounts"]->java.util.ArrayList[0]->com.github.dockerjava.api.command.InspectContainerResponse$Mount["Destination"])

Apparently, the issue has been reported in several places:

• Jackson MismatchedInputException on HttpResponseHandler.channelRead0 docker-java/docker-java#1509
• Broke with Jackson 2 API v2.12.0 jenkinsci/docker-plugin#821

Can the plugin be downgraded back to 2.11.3?

[odavid]

Hi @ymagriso
Will release a new version soon.
You will need to delete all the $JENKINS_HOME/plugins directory before upgrading.