190 lines
4.1 KiB
Bash
190 lines
4.1 KiB
Bash
#!/bin/bash
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set -e
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shopt -s nullglob
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showUsage()
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{
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me="$(basename "$0")"
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cat <<EOF
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Usage: $me [OPTION] PATH
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Deploys a prebuilt Docker configuration profile.
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Options:
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-p, --profile=NAME Name of the Nix profile that stores the sysvinit scripts
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(defaults to: processes)
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-o, --old-profile=PATH
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Path to the previously deployed Nix profile (by default,
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it gets auto detected)
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-h, --help Shows the usage of this command
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Environment:
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NIX_STATE_DIR Overrides the location of the Nix state directory
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EOF
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}
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# Parse valid argument options
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PARAMS=`@getopt@ -n $0 -o p:o:h -l profile:,old-profile:,state-dir:,force-disable-user-change,help -- "$@"`
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if [ $? != 0 ]
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then
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showUsage
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exit 1
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fi
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# Evaluate valid options
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eval set -- "$PARAMS"
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while [ "$1" != "--" ]
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do
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case "$1" in
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-p|--profile)
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profile="$2"
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;;
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-o|--old-profile)
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oldProfilePath="$2"
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;;
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-h|--help)
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showUsage
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exit 0
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;;
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esac
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shift
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done
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shift
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profilePath="$1"
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# Validate the given options
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source @commonchecks@
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checkNixStateDir
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checkProfile
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composeOldProfilePath
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# Execute the deployment operation
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deployContainer()
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{
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local configDir="$1"
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local containerName="$2"
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(
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source $configDir/$containerName-docker-settings
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dockerContainerName="nixproc-$containerName"
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# Load the Docker image (this operation is already idempotent)
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docker load -i $dockerImage
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# Create the container if it does not exists yet
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if [ "$(docker ps -a -f "name=$dockerContainerName\$" | wc -l)" = "1" ]
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then
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(
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cat $configDir/$containerName-docker-createparams
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echo "--name"
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echo "$dockerContainerName"
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if [ "$forceDisableUserChange" = "1" ]
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then
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echo "--user"
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id -u
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fi
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echo "$dockerImageTag"
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) | @xargs@ -d '\n' docker create
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fi
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if [ "$(docker ps -f "name=$dockerContainerName\$" | wc -l)" = "1" ]
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then
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docker start $dockerContainerName
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fi
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)
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}
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undeployContainer()
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{
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local configDir="$1"
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local containerName="$2"
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(
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source $configDir/$containerName-docker-settings
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dockerContainerName="nixproc-$containerName"
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dockerStopTimeout=${dockerStopTimeout:-1}
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if [ "$(docker ps -f "name=$dockerContainerName\$" | wc -l)" = "2" ]
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then
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docker stop -t $dockerStopTimeout $dockerContainerName
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fi
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if [ "$(docker ps -a -f "name=$dockerContainerName\$" | wc -l)" = "2" ]
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then
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docker rm $dockerContainerName
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fi
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if [ "$(docker images -f "reference=$dockerImageTag" | wc -l)" = "2" ]
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then
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docker rmi $dockerImageTag
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fi
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)
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}
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# Determine paths of old containers
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oldunits=()
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if [ -d "$oldProfilePath" ]
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then
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for i in $oldProfilePath/*-docker-priority
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do
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currentPath=$(readlink -f "$i")
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oldunits+=($currentPath)
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done
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fi
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# Determine paths of new containers
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newunits=()
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for i in $profilePath/*-docker-priority
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do
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currentPath=$(readlink -f "$i")
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newunits+=($currentPath)
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done
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if [ "$oldProfilePath" != "" ]
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then
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# Undeploy obsolete containers
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if [ "$(echo $oldProfilePath/*-docker-priority)" != "" ]
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then
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for i in $(ls $oldProfilePath/*-docker-priority | sort -r)
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do
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if ! containsElement "$(readlink -f "$i")" "${newunits[@]}"
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then
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priorityFile="$(basename "$i" -docker-priority)"
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undeployContainer "$(dirname "$i")" "${priorityFile:3}"
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fi
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done
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fi
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fi
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# Deploy new containers
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for i in $profilePath/*-docker-priority
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do
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if ! containsElement "$(readlink -f "$i")" "${oldunits[@]}"
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then
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priorityFile="$(basename "$i" -docker-priority)"
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deployContainer "$(dirname "$i")" "${priorityFile:3}"
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fi
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done
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# Set new profile
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setNixProfile
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