influxdb/cmd/influx/query.go

102 lines
2.2 KiB
Go

package main
import (
"fmt"
"io/ioutil"
"os"
"strings"
"github.com/influxdata/flux"
_ "github.com/influxdata/flux/stdlib"
_ "github.com/influxdata/influxdb/v2/query/stdlib"
"github.com/spf13/cobra"
)
var queryFlags struct {
org organization
file string
}
func cmdQuery(f *globalFlags, opts genericCLIOpts) *cobra.Command {
cmd := opts.newCmd("query [query literal or -f /path/to/query.flux]", fluxQueryF, true)
cmd.Short = "Execute a Flux query"
cmd.Long = `Execute a Flux query provided via the first argument or a file or stdin`
cmd.Args = cobra.MaximumNArgs(1)
queryFlags.org.register(cmd, true)
cmd.Flags().StringVarP(&queryFlags.file, "file", "f", "", "Path to Flux query file")
return cmd
}
// readFluxQuery returns first argument, file contents or stdin
func readFluxQuery(args []string, file string) (string, error) {
// backward compatibility
if len(args) > 0 {
if strings.HasPrefix(args[0], "@") {
file = args[0][1:]
args = args[:0]
} else if args[0] == "-" {
file = ""
args = args[:0]
}
}
var query string
switch {
case len(args) > 0:
query = args[0]
case len(file) > 0:
content, err := ioutil.ReadFile(file)
if err != nil {
return "", err
}
query = string(content)
default:
content, err := ioutil.ReadAll(os.Stdin)
if err != nil {
return "", err
}
query = string(content)
}
return query, nil
}
func fluxQueryF(cmd *cobra.Command, args []string) error {
if flags.local {
return fmt.Errorf("local flag not supported for query command")
}
if err := queryFlags.org.validOrgFlags(&flags); err != nil {
return err
}
q, err := readFluxQuery(args, queryFlags.file)
if err != nil {
return fmt.Errorf("failed to load query: %v", err)
}
orgSvc, err := newOrganizationService()
if err != nil {
return fmt.Errorf("failed to initialized organization service client: %v", err)
}
orgID, err := queryFlags.org.getID(orgSvc)
if err != nil {
return err
}
flux.FinalizeBuiltIns()
r, err := getFluxREPL(flags.Host, flags.Token, flags.skipVerify, orgID)
if err != nil {
return fmt.Errorf("failed to get the flux REPL: %v", err)
}
if err := r.Input(q); err != nil {
return fmt.Errorf("failed to execute query: %v", err)
}
return nil
}