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home-manager/modules/services/podman-linux/activation.nix
Nicholas Hassan 1743615b61
podman: add module
Adds a new Podman module for creating user containers and networks as
systemd services. These are installed to the user's
`$XDG_CONFIG/systemd/user` directory.
2024-11-01 20:45:06 +01:00

99 lines
3.4 KiB
Nix

{ config, podman-lib, ... }:
{
cleanup = ''
PATH=$PATH:${podman-lib.newuidmapPaths}
export VERBOSE=true
DRYRUN_ENABLED() {
return $([ -n "''${DRY_RUN:-}" ] && echo 0 || echo 1)
}
VERBOSE_ENABLED() {
return $([ -n "''${VERBOSE:-}" ] && echo 0 || echo 1)
}
cleanup() {
local resourceType=$1
local manifestFile="${config.xdg.configHome}/podman/$2"
local extraListCommands="''${3:-}"
[[ $resourceType = "container" ]] && extraListCommands+=" -a"
[ ! -f "$manifestFile" ] && VERBOSE_ENABLED && echo "Manifest does not exist: $manifestFile" && return 0
VERBOSE_ENABLED && echo "Cleaning up ''${resourceType}s not in manifest..." || true
loadManifest "$manifestFile"
formatString="{{.Name}}"
[[ $resourceType = "container" ]] && formatString="{{.Names}}"
local listOutput=$(${config.services.podman.package}/bin/podman $resourceType ls $extraListCommands --filter 'label=nix.home-manager.managed=true' --format "$formatString")
IFS=$'\n' read -r -d "" -a podmanResources <<< "$listOutput" || true
if [ ''${#podmanResources[@]} -eq 0 ]; then
VERBOSE_ENABLED && echo "No ''${resourceType}s available to process." || true
else
for resource in "''${podmanResources[@]}"; do
if ! isResourceInManifest "$resource"; then
removeResource "$resourceType" "$resource"
else
VERBOSE_ENABLED && echo "Keeping managed $resourceType: $resource" || true
fi
done
fi
}
isResourceInManifest() {
local resource="$1"
for manifestEntry in "''${resourceManifest[@]}"; do
if [ "$resource" = "$manifestEntry" ]; then
return 0 # Resource found in manifest
fi
done
return 1 # Resource not found in manifest
}
# Function to fill resourceManifest from the manifest file
loadManifest() {
local manifestFile="$1"
VERBOSE_ENABLED && echo "Loading manifest from $manifestFile..." || true
IFS=$'\n' read -r -d "" -a resourceManifest <<< "$(cat "$manifestFile")" || true
}
removeResource() {
local resourceType="$1"
local resource="$2"
echo "Removing orphaned $resourceType: $resource"
commands=()
case "$resourceType" in
"container")
commands+="${config.services.podman.package}/bin/podman $resourceType stop $resource"
commands+="${config.services.podman.package}/bin/podman $resourceType rm -f $resource"
;;
"network")
commands+="${config.services.podman.package}/bin/podman $resourceType rm $resource"
;;
esac
for command in "''${commands[@]}"; do
command=$(echo $command | tr -d ';&|`')
DRYRUN_ENABLED && echo "Would run: $command" && continue || true
VERBOSE_ENABLED && echo "Running: $command" || true
if [[ "$(eval "$command")" != "$resource" ]]; then
echo -e "\tCommand failed: ''${command}"
usedByContainers=$(${config.services.podman.package}/bin/podman container ls -a --filter "$resourceType=$resource" --format "{{.Names}}")
echo -e "\t$resource in use by containers: $usedByContainers"
fi
done
}
resourceManifest=()
[[ "$@" == *"--verbose"* ]] && VERBOSE="true"
[[ "$@" == *"--dry-run"* ]] && DRY_RUN="true"
for type in "container" "network"; do
cleanup "$type" "''${type}s.manifest"
done
'';
}