/
resource.go
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/
resource.go
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package dokku
import (
"fmt"
"github.com/texm/dokku-go/internal/reports"
"strconv"
"strings"
)
type resourceManager interface {
GetAppResourceReport(appName string) (*AppResourceReport, error)
GetResourceReport() (ResourceReport, error)
SetAppDefaultResourceLimit(appName string, resource ResourceSpec, limit int) error
ClearAppDefaultResourceLimit(appName string, resource ResourceSpec) error
ClearAppDefaultResourceLimits(appName string) error
SetAppProcessResourceLimit(appName string, process string, resource ResourceSpec, limit int) error
ClearAppProcessResourceLimit(appName string, process string, resource ResourceSpec) error
ClearAppProcessResourceLimits(appName string, process string) error
SetAppResourceReservation(appName string, resource ResourceSpec, reserve int) error
ClearAppResourceReservation(appName string, resource ResourceSpec) error
ClearAppResourceReservations(appName string) error
SetAppProcessResourceReservation(appName string, process string, resource ResourceSpec, reserve int) error
ClearAppProcessResourceReservation(appName string, process string, resource ResourceSpec) error
ClearAppProcessResourceReservations(appName string, process string) error
}
const (
resourceReportCmd = "resource:report"
resourceReportAppCmd = "resource:report %s"
resourceLimitCmd = "resource:limit %s --%s %s"
resourceLimitProcessCmd = "resource:limit %s --process-type %s --%s %s"
resourceLimitClearCmd = "resource:limit-clear %s"
resourceLimitClearProcessCmd = "resource:limit-clear %s --process-type %s"
resourceReserveCmd = "resource:reserve %s --%s %s"
resourceReserveProcessCmd = "resource:reserve %s --process-type %s --%s %s"
resourceReserveClearCmd = "resource:reserve-clear %s"
resourceReserveClearProcessCmd = "resource:reserve-clear %s --process-type %s"
)
type ResourceSpec struct {
Name string `json:"name"`
Suffix string `json:"suffix"`
}
type Resource struct {
Type ResourceSpec `json:"type"`
Amount int `json:"amount"`
}
type ResourceUnits struct {
CPU *Resource `json:"cpu"`
Memory *Resource `json:"memory"`
MemorySwap *Resource `json:"memory_swap"`
Network *Resource `json:"network"`
NetworkIngress *Resource `json:"network_ingress"`
NetworkEgress *Resource `json:"network_egress"`
NvidiaGPU *Resource `json:"nvidia_gpu"`
}
type ResourceSettings struct {
Limits ResourceUnits `json:"limits"`
Reservations ResourceUnits `json:"reservations"`
}
type AppResourceReport struct {
Defaults ResourceSettings `json:"defaults"`
Processes map[string]ResourceSettings `json:"processes"`
}
type ResourceReport map[string]*AppResourceReport
var (
ResourceCPU = ResourceSpec{"cpu", ""}
ResourceMemoryBytes = ResourceSpec{"memory", "b"}
ResourceMemoryKilobytes = ResourceSpec{"memory", "k"}
ResourceMemoryMegabytes = ResourceSpec{"memory", "m"}
ResourceMemoryGigabytes = ResourceSpec{"memory", "g"}
ResourceMemorySwapBytes = ResourceSpec{"memory-swap", "b"}
ResourceMemorySwapKilobytes = ResourceSpec{"memory-swap", "k"}
ResourceMemorySwapMegabytes = ResourceSpec{"memory-swap", "m"}
ResourceMemorySwapGigabytes = ResourceSpec{"memory-swap", "g"}
ResourceNetwork = ResourceSpec{"network", ""}
ResourceNetworkIngress = ResourceSpec{"network-ingress", ""}
ResourceNetworkEgress = ResourceSpec{"network-egress", ""}
ResourceNvidiaGPU = ResourceSpec{"nvidia-gpu", ""}
)
func (c *BaseClient) SetAppDefaultResourceLimit(appName string, resource ResourceSpec, limit int) error {
amt := fmt.Sprintf("%d%s", limit, resource.Suffix)
cmd := fmt.Sprintf(resourceLimitCmd, appName, resource.Name, amt)
_, err := c.Exec(cmd)
return err
}
func (c *BaseClient) ClearAppDefaultResourceLimit(appName string, resource ResourceSpec) error {
cmd := fmt.Sprintf(resourceLimitCmd, appName, resource.Name, "clear")
_, err := c.Exec(cmd)
return err
}
func (c *BaseClient) ClearAppDefaultResourceLimits(appName string) error {
cmd := fmt.Sprintf(resourceLimitClearCmd, appName)
_, err := c.Exec(cmd)
return err
}
func (c *BaseClient) SetAppProcessResourceLimit(appName string, process string, resource ResourceSpec, limit int) error {
amt := fmt.Sprintf("%d%s", limit, resource.Suffix)
cmd := fmt.Sprintf(resourceLimitProcessCmd, appName, process, resource.Name, amt)
_, err := c.Exec(cmd)
return err
}
func (c *BaseClient) ClearAppProcessResourceLimit(appName string, process string, resource ResourceSpec) error {
cmd := fmt.Sprintf(resourceLimitProcessCmd, appName, process, resource.Name, "clear")
_, err := c.Exec(cmd)
return err
}
func (c *BaseClient) ClearAppProcessResourceLimits(appName string, process string) error {
cmd := fmt.Sprintf(resourceLimitClearProcessCmd, appName, process)
_, err := c.Exec(cmd)
return err
}
func (c *BaseClient) SetAppResourceReservation(appName string, resource ResourceSpec, reserve int) error {
amt := fmt.Sprintf("%d%s", reserve, resource.Suffix)
cmd := fmt.Sprintf(resourceReserveCmd, appName, resource.Name, amt)
_, err := c.Exec(cmd)
return err
}
func (c *BaseClient) ClearAppResourceReservation(appName string, resource ResourceSpec) error {
cmd := fmt.Sprintf(resourceReserveCmd, appName, resource.Name, "clear")
_, err := c.Exec(cmd)
return err
}
func (c *BaseClient) ClearAppResourceReservations(appName string) error {
cmd := fmt.Sprintf(resourceReserveClearCmd, appName)
_, err := c.Exec(cmd)
return err
}
func (c *BaseClient) SetAppProcessResourceReservation(appName string, process string, resource ResourceSpec, reserve int) error {
amt := fmt.Sprintf("%d%s", reserve, resource.Suffix)
cmd := fmt.Sprintf(resourceReserveProcessCmd, appName, process, resource.Name, amt)
_, err := c.Exec(cmd)
return err
}
func (c *BaseClient) ClearAppProcessResourceReservation(appName string, process string, resource ResourceSpec) error {
cmd := fmt.Sprintf(resourceReserveProcessCmd, appName, process, resource.Name, "clear")
_, err := c.Exec(cmd)
return err
}
func (c *BaseClient) ClearAppProcessResourceReservations(appName string, process string) error {
cmd := fmt.Sprintf(resourceReserveClearProcessCmd, appName, process)
_, err := c.Exec(cmd)
return err
}
func updateResourceUnitSettings(units *ResourceUnits, resourceType string, rawVal string) error {
resSpec := ResourceSpec{
Name: resourceType,
}
if resourceType == "memory" || resourceType == "memory-swap" {
resSpec.Suffix = rawVal[len(rawVal)-1:]
rawVal = rawVal[:len(rawVal)-1]
}
amt, err := strconv.Atoi(rawVal)
if err != nil {
return fmt.Errorf("failed to convert resource amount (%s)", rawVal)
}
res := &Resource{
Amount: amt,
Type: resSpec,
}
switch resourceType {
case "cpu":
units.CPU = res
case "memory":
units.Memory = res
case "memory-swap":
units.MemorySwap = res
case "network":
units.Network = res
case "network-ingress":
units.NetworkIngress = res
case "network-egress":
units.NetworkEgress = res
case "nvidia-gpu":
units.NvidiaGPU = res
default:
return fmt.Errorf("unknown resource type %s", resourceType)
}
return nil
}
func parseAppResourceReport(reportMap map[string]string) (*AppResourceReport, error) {
report := &AppResourceReport{
Defaults: ResourceSettings{
Limits: ResourceUnits{},
Reservations: ResourceUnits{},
},
Processes: map[string]ResourceSettings{},
}
for k, v := range reportMap {
kSplit := strings.Split(k, " ")
proc := kSplit[0]
mType := kSplit[1]
resType := kSplit[2]
var resSettings *ResourceSettings
isProcess := proc != "_default_"
if !isProcess {
resSettings = &report.Defaults
} else {
settings, ok := report.Processes[proc]
if !ok {
settings = ResourceSettings{
Limits: ResourceUnits{},
Reservations: ResourceUnits{},
}
}
resSettings = &settings
}
var err error
if mType == "limit" {
err = updateResourceUnitSettings(&resSettings.Limits, resType, v)
} else if mType == "reserve" {
err = updateResourceUnitSettings(&resSettings.Reservations, resType, v)
} else {
return nil, fmt.Errorf("unknown resource management '%s'", mType)
}
if err != nil {
return nil, err
}
if isProcess {
report.Processes[proc] = *resSettings
}
}
return report, nil
}
func (c *BaseClient) GetAppResourceReport(appName string) (*AppResourceReport, error) {
cmd := fmt.Sprintf(resourceReportAppCmd, appName)
output, err := c.Exec(cmd)
if err != nil {
return nil, err
}
reportMap, err := reports.ParseSingle(output)
if err != nil {
return nil, err
}
return parseAppResourceReport(reportMap)
}
func (c *BaseClient) GetResourceReport() (ResourceReport, error) {
output, err := c.Exec(resourceReportCmd)
if err != nil {
return nil, err
}
reportMap, err := reports.ParseMultiple(output)
if err != nil {
return nil, err
}
appsReport := ResourceReport{}
for name, report := range reportMap {
appReport, err := parseAppResourceReport(report)
if err != nil {
return nil, err
}
appsReport[name] = appReport
}
return appsReport, nil
}