func getConfig(c *cli.Context) (*manager.Config, string, error) {
var reader io.Reader
configFile := ""
if !c.GlobalIsSet("config") {
logrus.Debugf("no configuration was specified, starting with default.")
} else if c.GlobalString("config") == "-" {
logrus.Debugf("reading configuration from stdin")
reader = bufio.NewReader(os.Stdin)
} else {
f, err := os.Open(c.GlobalString("config"))
if err != nil {
return nil, "", errored.Errorf("failed to open config file. Error: %v", err)
}
defer func() { f.Close() }()
logrus.Debugf("reading configuration from file: %q", c.GlobalString("config"))
reader = bufio.NewReader(f)
configFile = c.GlobalString("config")
}
config := manager.DefaultConfig()
if reader != nil {
if _, err := config.MergeFromReader(reader); err != nil {
return nil, "", errored.Errorf("failed to merge configuration. Error: %v", err)
}
}
return config, configFile, nil
}
package main
import (
"github.com/Sirupsen/logrus"
"github.com/codegangsta/cli"
"github.com/contiv/cluster/management/src/clusterm/manager"
"github.com/contiv/errored"
)
var (
clustermFlags = []cli.Flag{
cli.StringFlag{
Name: "url, u",
Value: manager.DefaultConfig().Manager.Addr,
Usage: "cluster manager's REST service url",
},
}
extraVarsFlag = cli.StringFlag{
Name: "extra-vars, e",
Value: "",
Usage: "extra vars for ansible configuration. This should be a quoted json string.",
}
jsonFlag = cli.BoolFlag{
Name: "json, j",
Usage: "print command output in JSON",
}
getFlags = []cli.Flag{
jsonFlag,