/
create_desired_lrp.go
93 lines (78 loc) · 2.17 KB
/
create_desired_lrp.go
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package commands
import (
"encoding/json"
"fmt"
"io"
"os"
"strings"
"code.cloudfoundry.org/bbs"
"code.cloudfoundry.org/bbs/models"
"code.cloudfoundry.org/bbs/trace"
"code.cloudfoundry.org/cfdot/commands/helpers"
"github.com/spf13/cobra"
)
var createDesiredLRPCmd = &cobra.Command{
Use: "create-desired-lrp (SPEC|@FILE)",
Short: "Create a desired LRP",
Long: "Create a desired LRP from the given spec. Spec can either be json encoded desired-lrp, e.g. '{\"process_guid\":\"some-guid\"}' or a file containing json encoded desired-lrp, e.g. @/path/to/spec/file",
RunE: createDesiredLRP,
}
func init() {
AddBBSAndTimeoutFlags(createDesiredLRPCmd)
RootCmd.AddCommand(createDesiredLRPCmd)
}
func createDesiredLRP(cmd *cobra.Command, args []string) error {
if len(args) != 1 {
return NewCFDotValidationError(cmd, fmt.Errorf("missing spec argument"))
}
spec, err := ValidateCreateDesiredLRPArguments(args)
if err != nil {
return NewCFDotValidationError(cmd, err)
}
bbsClient, err := helpers.NewBBSClient(cmd, Config)
if err != nil {
return NewCFDotError(cmd, err)
}
err = CreateDesiredLRP(cmd.OutOrStdout(), cmd.OutOrStderr(), bbsClient, spec)
if err != nil {
return NewCFDotError(cmd, err)
}
return nil
}
func ValidateCreateDesiredLRPArguments(args []string) ([]byte, error) {
var desiredLRP *models.DesiredLRP
var err error
var spec []byte
argValue := args[0]
if strings.HasPrefix(argValue, "@") {
_, err := os.Stat(argValue[1:])
if err != nil {
return nil, err
}
spec, err = os.ReadFile(argValue[1:])
if err != nil {
return nil, err
}
} else {
spec = []byte(argValue)
}
err = json.Unmarshal([]byte(spec), &desiredLRP)
if err != nil {
return nil, fmt.Errorf("Invalid JSON: %s", err.Error())
}
return spec, nil
}
func CreateDesiredLRP(stdout, stderr io.Writer, bbsClient bbs.Client, spec []byte) error {
traceID := trace.GenerateTraceID()
logger := trace.LoggerWithTraceInfo(globalLogger.Session("create-desired-lrp"), traceID)
var desiredLRP *models.DesiredLRP
err := json.Unmarshal(spec, &desiredLRP)
if err != nil {
return err
}
err = bbsClient.DesireLRP(logger, traceID, desiredLRP)
if err != nil {
return err
}
return nil
}