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config.go
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config.go
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package flink
import (
"fmt"
"math"
"sort"
"strings"
"github.com/hashicorp/go-version"
"github.com/lyft/flinkk8soperator/integ/log"
"github.com/lyft/flinkk8soperator/pkg/apis/app/v1beta1"
)
const (
JobManagerDefaultReplicaCount = 1
TaskManagerDefaultSlots = 16
RPCDefaultPort = 6123
QueryDefaultPort = 6124
BlobDefaultPort = 6125
UIDefaultPort = 8081
MetricsQueryDefaultPort = 50101
OffHeapMemoryDefaultFraction = 0.5
SystemMemoryDefaultFraction = 0.2
HighAvailabilityKey = "high-availability"
MaxCheckpointRestoreAgeSeconds = 3600
)
func firstNonNil(x *int32, y int32) int32 {
if x != nil {
return *x
}
return y
}
func getValidFraction(x *float64, d float64) float64 {
if x != nil && *x >= float64(0) && *x <= float64(1) {
return *x
}
return d
}
func getTaskmanagerSlots(app *v1beta1.FlinkApplication) int32 {
return firstNonNil(app.Spec.TaskManagerConfig.TaskSlots, TaskManagerDefaultSlots)
}
func getJobmanagerReplicas(app *v1beta1.FlinkApplication) int32 {
return firstNonNil(app.Spec.JobManagerConfig.Replicas, JobManagerDefaultReplicaCount)
}
func getServiceAccountName(app *v1beta1.FlinkApplication) string {
return app.Spec.ServiceAccountName
}
func getRPCPort(app *v1beta1.FlinkApplication) int32 {
return firstNonNil(app.Spec.RPCPort, RPCDefaultPort)
}
func getUIPort(app *v1beta1.FlinkApplication) int32 {
return firstNonNil(app.Spec.UIPort, UIDefaultPort)
}
func getQueryPort(app *v1beta1.FlinkApplication) int32 {
return firstNonNil(app.Spec.QueryPort, QueryDefaultPort)
}
func getBlobPort(app *v1beta1.FlinkApplication) int32 {
return firstNonNil(app.Spec.BlobPort, BlobDefaultPort)
}
func getInternalMetricsQueryPort(app *v1beta1.FlinkApplication) int32 {
return firstNonNil(app.Spec.MetricsQueryPort, MetricsQueryDefaultPort)
}
func getMaxCheckpointRestoreAgeSeconds(app *v1beta1.FlinkApplication) int32 {
return firstNonNil(app.Spec.MaxCheckpointRestoreAgeSeconds, MaxCheckpointRestoreAgeSeconds)
}
func getRequestedTaskManagerMemory(application *v1beta1.FlinkApplication) int64 {
tmResources := application.Spec.TaskManagerConfig.Resources
if tmResources == nil {
tmResources = &TaskManagerDefaultResources
}
tmMemory, ok := tmResources.Requests.Memory().AsInt64()
if !ok {
tmMemory, ok = tmResources.Requests.Memory().ToDec().AsInt64()
if !ok {
log.Errorf("Task Manager memory couldn't be parsed, sorry: name=%s", application.Name)
return 0
}
}
return tmMemory
}
func getRequestedJobManagerMemory(application *v1beta1.FlinkApplication) int64 {
jmResources := application.Spec.JobManagerConfig.Resources
if jmResources == nil {
jmResources = &JobManagerDefaultResources
}
jmMemory, ok := jmResources.Requests.Memory().AsInt64()
if !ok {
jmMemory, ok = jmResources.Requests.Memory().ToDec().AsInt64()
if !ok {
log.Errorf("Job Manager memory couldn't be parsed, sorry: name=%s", application.Name)
return 0
}
}
return jmMemory
}
func computeMemory(memoryInBytes float64, fraction float64) string {
kbs := int64(math.Round(memoryInBytes-(memoryInBytes*fraction)) / 1024)
return fmt.Sprintf("%dk", kbs)
}
// heap memory configs are used for Flink < 1.11
func getTaskManagerHeapMemory(app *v1beta1.FlinkApplication) string {
tmMemory := float64(getRequestedTaskManagerMemory(app))
fraction := getValidFraction(app.Spec.TaskManagerConfig.OffHeapMemoryFraction, OffHeapMemoryDefaultFraction)
tmMemoryStr := computeMemory(tmMemory, fraction)
return tmMemoryStr
}
func getJobManagerHeapMemory(app *v1beta1.FlinkApplication) string {
jmMemory := float64(getRequestedJobManagerMemory(app))
fraction := getValidFraction(app.Spec.JobManagerConfig.OffHeapMemoryFraction, OffHeapMemoryDefaultFraction)
jmMemoryStr := computeMemory(jmMemory, fraction)
return jmMemoryStr
}
// process memory configs are used for Flink >= 1.11
func getTaskManagerProcessMemory(app *v1beta1.FlinkApplication) string {
tmMemory := float64(getRequestedTaskManagerMemory(app))
fraction := getValidFraction(app.Spec.TaskManagerConfig.SystemMemoryFraction, SystemMemoryDefaultFraction)
tmMemoryStr := computeMemory(tmMemory, fraction)
return tmMemoryStr
}
func getJobManagerProcessMemory(app *v1beta1.FlinkApplication) string {
jmMemory := float64(getRequestedJobManagerMemory(app))
fraction := getValidFraction(app.Spec.JobManagerConfig.SystemMemoryFraction, SystemMemoryDefaultFraction)
jmMemoryStr := computeMemory(jmMemory, fraction)
return jmMemoryStr
}
func getFlinkVersion(app *v1beta1.FlinkApplication) string {
return app.Spec.FlinkVersion
}
// Renders the flink configuration overrides stored in FlinkApplication.FlinkConfig into a
// YAML string suitable for interpolating into flink-conf.yaml.
func renderFlinkConfig(app *v1beta1.FlinkApplication) (string, error) {
config := app.Spec.FlinkConfig.DeepCopy()
if config == nil {
config = &v1beta1.FlinkConfig{}
}
// we will fill this in later using the versioned service
delete(*config, "jobmanager.rpc.address")
(*config)["taskmanager.numberOfTaskSlots"] = getTaskmanagerSlots(app)
(*config)["jobmanager.rpc.port"] = getRPCPort(app)
(*config)["jobmanager.web.port"] = getUIPort(app)
(*config)["query.server.port"] = getQueryPort(app)
(*config)["blob.server.port"] = getBlobPort(app)
(*config)["metrics.internal.query-service.port"] = getInternalMetricsQueryPort(app)
appVersion, err := version.NewVersion(getFlinkVersion(app))
v11, _ := version.NewVersion("1.11")
if err != nil || appVersion == nil || appVersion.LessThan(v11) {
// if process memory is specified for < 11, error out
if app.Spec.JobManagerConfig.SystemMemoryFraction != nil || app.Spec.TaskManagerConfig.SystemMemoryFraction != nil {
return "", fmt.Errorf("systemMemoryFraction config cannot be used with flinkVersion < 1.11', use " +
"offHeapMemoryFraction instead")
}
(*config)["jobmanager.heap.size"] = getJobManagerHeapMemory(app)
(*config)["taskmanager.heap.size"] = getTaskManagerHeapMemory(app)
} else {
// if heap memory is used for >= 1.11, error out
if app.Spec.JobManagerConfig.OffHeapMemoryFraction != nil || app.Spec.TaskManagerConfig.OffHeapMemoryFraction != nil {
return "", fmt.Errorf("offHeapMemoryFraction config cannot be used with flinkVersion >= 1.11'; " +
"use systemMemoryFraction istead")
}
(*config)["jobmanager.memory.process.size"] = getJobManagerProcessMemory(app)
(*config)["taskmanager.memory.process.size"] = getTaskManagerProcessMemory(app)
}
// get the keys for the map
var keys = make([]string, len(*config))
i := 0
for k := range *config {
keys[i] = k
i++
}
// sort them to provide a stable iteration order
sort.Strings(keys)
// print them in order
var s strings.Builder
for _, k := range keys {
var vStr string
switch v := (*config)[k].(type) {
case int, uint, int32, uint32, int64, uint64, bool, float32, float64:
vStr = fmt.Sprintf("%v", v)
case string:
vStr = v
default:
return "", fmt.Errorf("invalid type in flink config: %T", v)
}
_, _ = fmt.Fprintf(&s, "%s: %s\n", k, vStr)
}
return s.String(), nil
}
func isHAEnabled(flinkConfig v1beta1.FlinkConfig) bool {
if val, ok := flinkConfig[HighAvailabilityKey]; ok {
value := val.(string)
if strings.ToLower(strings.TrimSpace(value)) != "none" {
return true
}
}
return false
}