Files
dokku/plugins/resource/resource.go

118 lines
2.9 KiB
Go

package resource
import (
"errors"
"fmt"
"os"
"reflect"
"sort"
"strings"
"github.com/dokku/dokku/plugins/common"
)
// Resource is a collection of resource constraints for apps
type Resource struct {
CPU string `json:"cpu"`
Memory string `json:"memory"`
MemorySwap string `json:"memory-swap"`
Network string `json:"network"`
NetworkIngress string `json:"network-ingress"`
NetworkEgress string `json:"network-egress"`
}
// ReportSingleApp is an internal function that displays the app report for one or more apps
func ReportSingleApp(appName, infoFlag string) {
if err := common.VerifyAppName(appName); err != nil {
common.LogFail(err.Error())
}
resources, err := common.PropertyGetAll("resource", appName)
if err != nil {
return
}
flags := []string{}
infoFlags := map[string]string{}
for key, value := range resources {
flag := fmt.Sprintf("--resource-%v", key)
flags = append(flags, flag)
infoFlags[flag] = value
}
sort.Strings(flags)
if len(infoFlag) == 0 {
common.LogInfo2Quiet(fmt.Sprintf("%s resource information", appName))
for _, k := range flags {
v := infoFlags[k]
key := strings.Replace(strings.Replace(strings.TrimPrefix(k, "--resource-"), "-", " ", -1), ".", " ", -1)
common.LogVerbose(fmt.Sprintf("%s%s", Right(fmt.Sprintf("%s:", key), 31, " "), v))
}
return
}
for _, k := range flags {
v := infoFlags[k]
if infoFlag == k {
fmt.Fprintln(os.Stdout, v)
return
}
}
keys := reflect.ValueOf(infoFlags).MapKeys()
strkeys := make([]string, len(keys))
for i := 0; i < len(keys); i++ {
strkeys[i] = keys[i].String()
}
common.LogFail(fmt.Sprintf("Invalid flag passed, valid flags: %s", strings.Join(strkeys, ", ")))
}
// GetResourceValue fetches a single value for a given app/process/request/key combination
func GetResourceValue(appName string, processType string, resourceType string, key string) (string, error) {
resources, err := common.PropertyGetAll("resource", appName)
if err != nil {
return "", err
}
defaultValue := ""
for k, value := range resources {
if k == propertyKey("_default_", resourceType, key) {
defaultValue = value
}
if k == propertyKey(processType, resourceType, key) {
return value, nil
}
}
return defaultValue, nil
}
func times(str string, n int) (out string) {
for i := 0; i < n; i++ {
out += str
}
return
}
// Right right-pads the string with pad up to len runes
func Right(str string, length int, pad string) string {
return str + times(pad, length-len(str))
}
func propertyKey(processType string, resourceType string, key string) string {
return fmt.Sprintf("%v.%v.%v", processType, resourceType, key)
}
func getAppName(args []string) (string, error) {
if len(args) < 1 {
return "", errors.New("Please specify an app to run the command on")
}
appName := args[0]
if err := common.VerifyAppName(appName); err != nil {
return "", err
}
return appName, nil
}