feat: Implement resource:limit and resource:reserve

Also add the install and post-delete hooks

plugins/resource/subcommands.go

@@ -0,0 +1,83 @@
+package resource
+
+import (
+	"errors"
+	"fmt"
+	"github.com/dokku/dokku/plugins/common"
+)
+
+// CommandLimit implements resource:limit
+func CommandLimit(args []string, processType string, r Resource) (err error) {
+	return setRequestType(args, processType, r, "limit")
+}
+
+// CommandReserve implements resource:reserve
+func CommandReserve(args []string, processType string, r Resource) (err error) {
+	return setRequestType(args, processType, r, "reserve")
+}
+
+func setRequestType(args []string, processType string, r Resource, requestType string) (err error) {
+	var appName string
+	appName, err = getAppName(args)
+	if err != nil {
+		return
+	}
+
+	if err = common.VerifyAppName(appName); err != nil {
+		common.LogFail(err.Error())
+	}
+
+	if len(processType) == 0 {
+		processType = "_all_"
+	}
+
+	resources := map[string]string{
+		"cpu":             r.Cpu,
+		"memory":          r.Memory,
+		"memory-swap":     r.MemorySwap,
+		"network":         r.Network,
+		"network-ingress": r.NetworkIngress,
+		"network-egress":  r.NetworkEgress,
+	}
+
+	hasValues := false
+	for _, value := range resources {
+		if value != "" {
+			hasValues = true
+		}
+	}
+
+	if !hasValues {
+		return errors.New("Please specify a resource to modify")
+	}
+
+	if requestType == "limit" {
+		common.LogInfo2Quiet(fmt.Sprintf("Setting resource limits for %v", appName))
+	} else if requestType == "reserve" {
+		common.LogInfo2Quiet(fmt.Sprintf("Setting resource reservation for %v", appName))
+	}
+
+	for key, value := range resources {
+		if value != "" {
+			common.LogVerbose(fmt.Sprintf("%v: %v", key, value))
+		}
+
+		property := fmt.Sprintf("%v.%v.%v", processType, requestType, key)
+		err = common.PropertyWrite(PluginName, appName, property, value)
+		if err != nil {
+			return
+		}
+	}
+
+	return
+}
+
+func getAppName(args []string) (appName string, err error) {
+	if len(args) >= 1 {
+		appName = args[0]
+	} else {
+		err = errors.New("Please specify an app to run the command on")
+	}
+
+	return
+}