forked from cloudfoundry/cli
/
runner.go
54 lines (45 loc) · 1.08 KB
/
runner.go
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package commands
import (
"cf/requirements"
"errors"
"fmt"
"github.com/codegangsta/cli"
"os"
)
type Command interface {
GetRequirements(reqFactory requirements.Factory, c *cli.Context) (reqs []requirements.Requirement, err error)
Run(c *cli.Context)
}
type Runner interface {
RunCmdByName(cmdName string, c *cli.Context) (err error)
}
type ConcreteRunner struct {
cmdFactory Factory
reqFactory requirements.Factory
}
func NewRunner(cmdFactory Factory, reqFactory requirements.Factory) (runner ConcreteRunner) {
runner.cmdFactory = cmdFactory
runner.reqFactory = reqFactory
return
}
func (runner ConcreteRunner) RunCmdByName(cmdName string, c *cli.Context) (err error) {
cmd, err := runner.cmdFactory.GetByCmdName(cmdName)
if err != nil {
fmt.Printf("Error finding command %s\n", cmdName)
os.Exit(1)
return
}
requirements, err := cmd.GetRequirements(runner.reqFactory, c)
if err != nil {
return
}
for _, requirement := range requirements {
success := requirement.Execute()
if !success {
err = errors.New("Error in requirement")
return
}
}
cmd.Run(c)
return
}