DRY up fetcher configuration (#1168)

Consolidates the addition of the fetcher container to the pod into a new type FetcherConfig and takes care of serviceAccountName if not set. Also added PreStop lifecycle handler if pod set TerminationGracePeriodSeconds

executor/util/util.go

@@ -1,57 +0,0 @@
-/*
-Copyright 2016 The Fission Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-package util
-
-import (
-	"os"
-
-	"k8s.io/api/core/v1"
-	"k8s.io/apimachinery/pkg/api/resource"
-)
-
-func GetFetcherResources() (v1.ResourceRequirements, error) {
-	mincpu, err := resource.ParseQuantity(os.Getenv("FETCHER_MINCPU"))
-	if err != nil {
-		return v1.ResourceRequirements{}, err
-	}
-
-	minmem, err := resource.ParseQuantity(os.Getenv("FETCHER_MINMEM"))
-	if err != nil {
-		return v1.ResourceRequirements{}, err
-	}
-
-	maxcpu, err := resource.ParseQuantity(os.Getenv("FETCHER_MAXCPU"))
-	if err != nil {
-		return v1.ResourceRequirements{}, err
-	}
-
-	maxmem, err := resource.ParseQuantity(os.Getenv("FETCHER_MAXMEM"))
-	if err != nil {
-		return v1.ResourceRequirements{}, err
-	}
-
-	return v1.ResourceRequirements{
-		Requests: map[v1.ResourceName]resource.Quantity{
-			v1.ResourceCPU:    mincpu,
-			v1.ResourceMemory: minmem,
-		},
-		Limits: map[v1.ResourceName]resource.Quantity{
-			v1.ResourceCPU:    maxcpu,
-			v1.ResourceMemory: maxmem,
-		},
-	}, nil
-}