/**
 *
 * Update Salt environment pipeline
 *
 * Expected parameters:
 *   SALT_MASTER_URL            Salt API server location
 *   SALT_MASTER_CREDENTIALS    Credentials to the Salt API
 *   MCP_VERSION                Version of MCP to upgrade to
 *   UPGRADE_SALTSTACK          Upgrade SaltStack packages to new version.
 *   UPDATE_CLUSTER_MODEL       Update MCP version parameter in cluster model
 *   UPDATE_PIPELINES           Update pipeline repositories on Gerrit
 *   UPDATE_LOCAL_REPOS         Update local repositories
 */

// Load shared libs
salt = new com.mirantis.mk.Salt()
common = new com.mirantis.mk.Common()
python = new com.mirantis.mk.Python()
jenkinsUtils = new com.mirantis.mk.JenkinsUtils()
venvPepper = "venvPepper"
workspace = ""

def triggerMirrorJob(jobName){
    params = jenkinsUtils.getJobParameters(jobName)
    build job: jobName, parameters: [
        [$class: 'StringParameterValue', name: 'BRANCHES', value: params.get("BRANCHES")],
        [$class: 'StringParameterValue', name: 'CREDENTIALS_ID', value: params.get("CREDENTIALS_ID")],
        [$class: 'StringParameterValue', name: 'SOURCE_URL', value: params.get("SOURCE_URL")],
        [$class: 'StringParameterValue', name: 'TARGET_URL', value: params.get("TARGET_URL")]
    ]
}

def updateSaltStack(target, pkgs){
    try{
        salt.runSaltProcessStep(venvPepper, target, 'pkg.install', ["force_yes=True", "pkgs='$pkgs'"], null, true, 5)
    }catch(Exception ex){}

    common.retry(10, 30){
        salt.minionsReachable(venvPepper, 'I@salt:master', '*')
        def running = salt.runSaltProcessStep(venvPepper, target, 'saltutil.running', [], null, true, 5)
        for(value in running.get("return")[0].values()){
            if(value != []){
                throw new Exception("Not all salt-minions are ready for execution")
            }
        }
    }

    def saltVersion = salt.getPillar(venvPepper, 'I@salt:master', "_param:salt_version").get("return")[0].values()[0]
    def saltMinionVersions = salt.cmdRun(venvPepper, target, "apt-cache policy salt-common |  awk '/Installed/ && /$saltVersion/'").get("return")
    def saltMinionVersion = ""

    for(minion in saltMinionVersions[0].keySet()){
        saltMinionVersion = saltMinionVersions[0].get(minion).replace("Salt command execution success","").trim()
        if(saltMinionVersion == ""){
            error("Installed version of Salt on $minion doesn't match specified version in the model.")
        }
    }
}

def archiveReclassInventory(filename){
    def ret = salt.cmdRun(venvPepper, 'I@salt:master', "reclass -i", true, null, false)
    def reclassInv = ret.values()[0]
    writeFile file: filename, text: reclassInv.toString()
    archiveArtifacts artifacts: "$filename"
}

timeout(time: 12, unit: 'HOURS') {
    node("python") {
        try {
            def gitMcpVersion = MCP_VERSION
            workspace = common.getWorkspace()
            python.setupPepperVirtualenv(venvPepper, SALT_MASTER_URL, SALT_MASTER_CREDENTIALS)

            if(MCP_VERSION == ""){
                error("You must specify MCP version")
            }
            if(MCP_VERSION == "testing"){
                gitMcpVersion = "master"
            }

            stage("Update Reclass"){
                def cluster_name = salt.getPillar(venvPepper, 'I@salt:master', "_param:cluster_name").get("return")[0].values()[0]
                if(UPDATE_CLUSTER_MODEL.toBoolean()){
                    try{
                        salt.cmdRun(venvPepper, 'I@salt:master', "cd /srv/salt/reclass/ && git diff-index --quiet HEAD --")
                    }
                    catch(Exception ex){
                        error("You have uncommited changes in your Reclass cluster model repository. Please commit or reset them and rerun the pipeline.")
                    }
                    def dateTime = common.getDatetime()
                    salt.cmdRun(venvPepper, 'I@salt:master', "cd /srv/salt/reclass/classes/cluster/$cluster_name && grep -r --exclude-dir=aptly -l 'apt_mk_version: .*' * | xargs sed -i 's/apt_mk_version: .*/apt_mk_version: \"$MCP_VERSION\"/g'")
                    common.infoMsg("The following changes were made to the cluster model and will be commited. Please consider if you want to push them to the remote repository or not. You have to do this manually when the run is finished.")
                    salt.cmdRun(venvPepper, 'I@salt.master', "cd /srv/salt/reclass/classes/cluster/$cluster_name && git diff")
                    salt.cmdRun(venvPepper, 'I@salt:master', "cd /srv/salt/reclass/classes/cluster/$cluster_name && git status && git add -u && git commit -m 'Cluster model update to the release $MCP_VERSION on $dateTime'")
                }

                try{
                    salt.cmdRun(venvPepper, 'I@salt:master', "cd /srv/salt/reclass/classes/system && git diff-index --quiet HEAD --")
                }
                catch(Exception ex){
                    error("You have unstaged changes in your Reclass system model repository. Please reset them and rerun the pipeline.")
                }
                salt.cmdRun(venvPepper, 'I@salt:master', "cd /srv/salt/reclass/classes/system && git checkout $gitMcpVersion")
            }

            if(UPDATE_LOCAL_REPOS.toBoolean()){
                stage("Update local repos"){
                    common.infoMsg("Updating local repositories")

                    def engine = salt.getPillar(venvPepper, 'I@aptly:server', "aptly:server:source:engine")
                    runningOnDocker = engine.get("return")[0].containsValue("docker")

                    if (runningOnDocker) {
                        common.infoMsg("Aptly is running as Docker container")
                    }
                    else {
                        common.infoMsg("Aptly isn't running as Docker container. Going to use aptly user for executing aptly commands")
                    }

                    salt.cmdRun(venvPepper, 'I@salt:master', "cd /srv/salt/reclass/classes/cluster/$cluster_name/cicd/aptly && git checkout $MCP_VERSION")

                    if(runningOnDocker){
                        salt.cmdRun(venvPepper, 'I@aptly:server', "aptly mirror list --raw | grep -E '*' | xargs -n 1 aptly mirror drop -force", true, null, true)
                    }
                    else{
                       salt.cmdRun(venvPepper, 'I@aptly:server', "aptly mirror list --raw | grep -E '*' | xargs -n 1 aptly mirror drop -force", true, null, true, ['runas=aptly'])
                    }

                    salt.enforceState(venvPepper, 'I@aptly:server', 'aptly', true)

                    if(runningOnDocker){
                        salt.runSaltProcessStep(venvPepper, 'I@aptly:server', 'cmd.script', ['salt://aptly/files/aptly_mirror_update.sh', "args=-sv"], null, true)
                        salt.runSaltProcessStep(venvPepper, 'I@aptly:server', 'cmd.script', ['salt://aptly/files/aptly_publish_update.sh', "args=-frv -u http://10.99.0.1:8080"], null, true)
                    }
                    else{
                        salt.runSaltProcessStep(venvPepper, 'I@aptly:server', 'cmd.script', ['salt://aptly/files/aptly_mirror_update.sh', "args=-sv", 'runas=aptly'], null, true)
                        salt.runSaltProcessStep(venvPepper, 'I@aptly:server', 'cmd.script', ['salt://aptly/files/aptly_publish_update.sh', "args=-afrv", 'runas=aptly'], null, true)
                    }

                    salt.enforceState(venvPepper, 'I@aptly:server', 'docker.client.registry', true)

                    salt.enforceState(venvPepper, 'I@aptly:server', 'debmirror', true)

                    salt.enforceState(venvPepper, 'I@aptly:server', 'git.server', true)

                    salt.enforceState(venvPepper, 'I@aptly:server', 'linux.system.file', true)
                }
            }

            stage("Update Drivetrain"){
                salt.cmdRun(venvPepper, 'I@salt:master', "sed -i -e 's/[^ ]*[^ ]/$MCP_VERSION/4' /etc/apt/sources.list.d/mcp_salt.list")
                salt.cmdRun(venvPepper, 'I@salt:master', "apt-get -o Dir::Etc::sourcelist='/etc/apt/sources.list.d/mcp_salt.list' -o Dir::Etc::sourceparts='-' -o APT::Get::List-Cleanup='0' update")
                salt.cmdRun(venvPepper, 'I@salt:master', "apt-get install -y --allow-downgrades salt-formula-*")

                def inventoryBeforeFilename = "reclass-inventory-before.out"
                def inventoryAfterFilename = "reclass-inventory-after.out"

                archiveReclassInventory(inventoryBeforeFilename)

                salt.cmdRun(venvPepper, 'I@salt:master', "sed -i -e 's/[^ ]*[^ ]/$MCP_VERSION/4' /etc/apt/sources.list.d/mcp_extra.list")
                salt.cmdRun(venvPepper, 'I@salt:master', "apt-get -o Dir::Etc::sourcelist='/etc/apt/sources.list.d/mcp_extra.list' -o Dir::Etc::sourceparts='-' -o APT::Get::List-Cleanup='0' update")
                salt.cmdRun(venvPepper, 'I@salt:master', "apt-get install -y --allow-downgrades reclass")

                salt.fullRefresh(venvPepper, 'I@salt:master')

                try{
                    salt.enforceState(venvPepper, "I@salt:master", 'reclass', true)
                }
                catch(Exception ex){
                    error("Reclass fails rendering. Pay attention to your cluster model.")
                }

                salt.fullRefresh(venvPepper, '*')

                try{
                    salt.cmdRun(venvPepper, 'I@salt:master', "reclass-salt --top")
                }
                catch(Exception ex){
                    error("Reclass fails rendering. Pay attention to your cluster model.")
                }

                archiveReclassInventory(inventoryAfterFilename)

                sh "diff -u $inventoryBeforeFilename $inventoryAfterFilename > reclass-inventory-diff.out || true"
                archiveArtifacts artifacts: "reclass-inventory-diff.out"

                if(UPGRADE_SALTSTACK.toBoolean()){
                    salt.enforceState(venvPepper, "I@linux:system", 'linux.system.repo', true)

                    updateSaltStack("I@salt:master", '["salt-master", "salt-common", "salt-api", "salt-minion"]')

                    updateSaltStack("I@salt:minion and not I@salt:master", '["salt-minion"]')
                }

                if(UPDATE_PIPELINES.toBoolean()){
                    triggerMirrorJob("git-mirror-downstream-mk-pipelines")
                    triggerMirrorJob("git-mirror-downstream-pipeline-library")
                }

                salt.enforceState(venvPepper, "I@jenkins:client", 'jenkins.client', true)

                salt.cmdRun(venvPepper, "I@salt:master", "salt -C 'I@jenkins:client and I@docker:client' state.sls docker.client --async")

                sleep(180)

                common.infoMsg("Checking if Docker containers are up")

                try{
                    common.retry(10, 30){
                        salt.cmdRun(venvPepper, 'I@jenkins:client and I@docker:client', "! docker service ls | tail -n +2 | grep -v -E '\\s([0-9])/\\1\\s'")
                    }
                }
                catch(Exception ex){
                    error("Docker containers for CI/CD services are having troubles with starting.")
                }
            }
        }
        catch (Throwable e) {
            // If there was an error or exception thrown, the build failed
            currentBuild.result = "FAILURE"
            throw e
        }
    }
}