/
aggregates.go
117 lines (104 loc) · 4.21 KB
/
aggregates.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
package selector
import (
"fmt"
"regexp"
"github.com/aws/amazon-ec2-instance-selector/v2/pkg/bytequantity"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/service/ec2"
)
const (
// AggregateLowPercentile is the default lower percentile for resource ranges on similar instance type comparisons
AggregateLowPercentile = 0.9
// AggregateHighPercentile is the default upper percentile for resource ranges on similar instance type comparisons
AggregateHighPercentile = 1.2
)
// FiltersTransform can be implemented to provide custom transforms
type FiltersTransform interface {
Transform(Filters) (Filters, error)
}
// TransformFn is the func type definition for a FiltersTransform
type TransformFn func(Filters) (Filters, error)
// Transform implements FiltersTransform interface on TransformFn
// This allows any TransformFn to be passed into funcs accepting FiltersTransform interface
func (fn TransformFn) Transform(filters Filters) (Filters, error) {
return fn(filters)
}
// TransformBaseInstanceType transforms lower level filters based on the instanceTypeBase specs
func (itf Selector) TransformBaseInstanceType(filters Filters) (Filters, error) {
if filters.InstanceTypeBase == nil {
return filters, nil
}
instanceTypesOutput, err := itf.EC2.DescribeInstanceTypes(&ec2.DescribeInstanceTypesInput{
InstanceTypes: []*string{filters.InstanceTypeBase},
})
if err != nil {
return filters, err
}
if len(instanceTypesOutput.InstanceTypes) == 0 {
return filters, fmt.Errorf("error instance type %s is not a valid instance type", *filters.InstanceTypeBase)
}
instanceTypeInfo := instanceTypesOutput.InstanceTypes[0]
if filters.BareMetal == nil {
filters.BareMetal = instanceTypeInfo.BareMetal
}
if filters.CPUArchitecture == nil && len(instanceTypeInfo.ProcessorInfo.SupportedArchitectures) == 1 {
filters.CPUArchitecture = instanceTypeInfo.ProcessorInfo.SupportedArchitectures[0]
}
if filters.Fpga == nil {
isFpgaSupported := instanceTypeInfo.FpgaInfo != nil
filters.Fpga = &isFpgaSupported
}
if filters.GpusRange == nil {
gpuCount := 0
if instanceTypeInfo.GpuInfo != nil {
gpuCount = int(*getTotalGpusCount(instanceTypeInfo.GpuInfo))
}
filters.GpusRange = &IntRangeFilter{LowerBound: gpuCount, UpperBound: gpuCount}
}
if filters.MemoryRange == nil {
lowerBound := bytequantity.ByteQuantity{Quantity: uint64(float64(*instanceTypeInfo.MemoryInfo.SizeInMiB) * AggregateLowPercentile)}
upperBound := bytequantity.ByteQuantity{Quantity: uint64(float64(*instanceTypeInfo.MemoryInfo.SizeInMiB) * AggregateHighPercentile)}
filters.MemoryRange = &ByteQuantityRangeFilter{LowerBound: lowerBound, UpperBound: upperBound}
}
if filters.VCpusRange == nil {
lowerBound := int(float64(*instanceTypeInfo.VCpuInfo.DefaultVCpus) * AggregateLowPercentile)
upperBound := int(float64(*instanceTypeInfo.VCpuInfo.DefaultVCpus) * AggregateHighPercentile)
filters.VCpusRange = &IntRangeFilter{LowerBound: lowerBound, UpperBound: upperBound}
}
if filters.VirtualizationType == nil && len(instanceTypeInfo.SupportedVirtualizationTypes) == 1 {
filters.VirtualizationType = instanceTypeInfo.SupportedVirtualizationTypes[0]
}
filters.InstanceTypeBase = nil
return filters, nil
}
// TransformFlexible transforms lower level filters based on a set of opinions
func (itf Selector) TransformFlexible(filters Filters) (Filters, error) {
if filters.Flexible == nil {
return filters, nil
}
if filters.CPUArchitecture == nil {
filters.CPUArchitecture = aws.String("x86_64")
}
if filters.BareMetal == nil {
filters.BareMetal = aws.Bool(false)
}
if filters.Fpga == nil {
filters.Fpga = aws.Bool(false)
}
if filters.AllowList == nil {
baseAllowedInstanceTypes, err := regexp.Compile("^[cmr][3-9][ag]?\\..*$|^a[1-9]\\..*$|^t[2-9]\\..*$")
if err != nil {
return filters, err
}
filters.AllowList = baseAllowedInstanceTypes
}
if filters.VCpusRange == nil && filters.MemoryRange == nil {
defaultVcpus := 4
filters.VCpusRange = &IntRangeFilter{LowerBound: defaultVcpus, UpperBound: defaultVcpus}
}
return filters, nil
}
// TransformForService transforms lower level filters based on the service
func (itf Selector) TransformForService(filters Filters) (Filters, error) {
return itf.ServiceRegistry.ExecuteTransforms(filters)
}