/
command.go
79 lines (63 loc) · 1.46 KB
/
command.go
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package init
import (
"errors"
"flag"
"io"
"os"
"github.com/influxdata/influxdb/cmd/influx_tools/generate"
"github.com/influxdata/influxdb/cmd/influx_tools/server"
)
// Command represents the program execution for "store query".
type Command struct {
Stdin io.Reader
Stdout io.Writer
Stderr io.Writer
server server.Interface
configPath string
printOnly bool
spec generate.StorageSpec
}
// NewCommand returns a new instance of Command.
func NewCommand(server server.Interface) *Command {
return &Command{
Stdin: os.Stdin,
Stdout: os.Stdout,
Stderr: os.Stderr,
server: server,
}
}
func (cmd *Command) Run(args []string) (err error) {
err = cmd.parseFlags(args)
if err != nil {
return err
}
err = cmd.server.Open(cmd.configPath)
if err != nil {
return err
}
plan, err := cmd.spec.Plan(cmd.server)
if err != nil {
return err
}
plan.PrintPlan(cmd.Stdout)
if !cmd.printOnly {
return plan.InitMetadata(cmd.server.MetaClient())
}
return nil
}
func (cmd *Command) parseFlags(args []string) error {
fs := flag.NewFlagSet("gen-init", flag.ContinueOnError)
fs.StringVar(&cmd.configPath, "config", "", "Config file")
fs.BoolVar(&cmd.printOnly, "print", false, "Print data spec only")
cmd.spec.AddFlags(fs)
if err := fs.Parse(args); err != nil {
return err
}
if cmd.spec.Database == "" {
return errors.New("database is required")
}
if cmd.spec.Retention == "" {
return errors.New("retention policy is required")
}
return nil
}