78 lines
2.5 KiB
Go
78 lines
2.5 KiB
Go
// Package docker serves a remote suitable for use with docker volume api
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package docker
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import (
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"context"
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_ "embed"
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"path/filepath"
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"syscall"
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"github.com/spf13/cobra"
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"github.com/rclone/rclone/cmd"
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"github.com/rclone/rclone/cmd/mountlib"
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"github.com/rclone/rclone/fs/config/flags"
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"github.com/rclone/rclone/vfs"
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"github.com/rclone/rclone/vfs/vfsflags"
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)
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var (
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pluginName = "rclone"
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pluginScope = "local"
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baseDir = "/var/lib/docker-volumes/rclone"
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sockDir = "/run/docker/plugins" //lint:ignore U1000 unused when not building linux
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defSpecDir = "/etc/docker/plugins"
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stateFile = "docker-plugin.state"
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socketAddr = "" // TCP listening address or empty string for Unix socket
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socketGid = syscall.Getgid()
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canPersist = false // allows writing to config file
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forgetState = false
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noSpec = false
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)
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//go:embed docker.md
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var longHelp string
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func init() {
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cmdFlags := Command.Flags()
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// Add command specific flags
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flags.StringVarP(cmdFlags, &baseDir, "base-dir", "", baseDir, "Base directory for volumes", "")
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flags.StringVarP(cmdFlags, &socketAddr, "socket-addr", "", socketAddr, "Address <host:port> or absolute path (default: /run/docker/plugins/rclone.sock)", "")
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flags.IntVarP(cmdFlags, &socketGid, "socket-gid", "", socketGid, "GID for unix socket (default: current process GID)", "")
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flags.BoolVarP(cmdFlags, &forgetState, "forget-state", "", forgetState, "Skip restoring previous state", "")
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flags.BoolVarP(cmdFlags, &noSpec, "no-spec", "", noSpec, "Do not write spec file", "")
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// Add common mount/vfs flags
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mountlib.AddFlags(cmdFlags)
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vfsflags.AddFlags(cmdFlags)
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}
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// Command definition for cobra
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var Command = &cobra.Command{
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Use: "docker",
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Short: `Serve any remote on docker's volume plugin API.`,
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Long: longHelp + vfs.Help,
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Annotations: map[string]string{
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"versionIntroduced": "v1.56",
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"groups": "Filter",
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},
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Run: func(command *cobra.Command, args []string) {
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cmd.CheckArgs(0, 0, command, args)
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cmd.Run(false, false, command, func() error {
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ctx := context.Background()
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drv, err := NewDriver(ctx, baseDir, nil, nil, false, forgetState)
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if err != nil {
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return err
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}
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srv := NewServer(drv)
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if socketAddr == "" {
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// Listen on unix socket at /run/docker/plugins/<pluginName>.sock
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return srv.ServeUnix(pluginName, socketGid)
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}
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if filepath.IsAbs(socketAddr) {
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// Listen on unix socket at given path
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return srv.ServeUnix(socketAddr, socketGid)
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}
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return srv.ServeTCP(socketAddr, "", nil, noSpec)
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})
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},
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}
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