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Index ¶
Constants ¶
This section is empty.
Variables ¶
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Functions ¶
Types ¶
type Image ¶
type Image struct {
Id string
Arch string
// The type of virtualisation supported by this image.
VirtType string
}
Image holds the attributes that vary amongst relevant images for a given series in a given region.
func ImageMetadataToImages ¶
func ImageMetadataToImages(inputs []*imagemetadata.ImageMetadata) []Image
ImageMetadataToImages converts an array of ImageMetadata pointers (as returned by imagemetadata.Fetch) to an array of Image objects (as required by instances.FindInstanceSpec).
type InstanceConstraint ¶
type InstanceConstraint struct {
Region string
Series string
Arches []string
Constraints constraints.Value
// Storage specifies a list of storage types, in order of preference.
// eg ["ssd", "ebs"] means find images with ssd storage, but if none
// exist, find those with ebs instead.
Storage []string
}
InstanceConstraint constrains the possible instances that may be chosen by the environment provider.
func (*InstanceConstraint) String ¶
func (ic *InstanceConstraint) String() string
String returns a human readable form of this InstanceConstraint.
type InstanceSpec ¶
type InstanceSpec struct {
InstanceType InstanceType
Image Image
// contains filtered or unexported fields
}
InstanceSpec holds an instance type name and the chosen image info.
func FindInstanceSpec ¶
func FindInstanceSpec(possibleImages []Image, ic *InstanceConstraint, allInstanceTypes []InstanceType) (*InstanceSpec, error)
FindInstanceSpec returns an InstanceSpec satisfying the supplied InstanceConstraint. possibleImages contains a list of images matching the InstanceConstraint. allInstanceTypes provides information on every known available instance type (name, memory, cpu cores etc) on which instances can be run. The InstanceConstraint is used to filter allInstanceTypes and then a suitable image compatible with the matching instance types is returned.
type InstanceType ¶
type InstanceType struct {
Id string
Name string
Arches []string
CpuCores uint64
Mem uint64
Cost uint64
RootDisk uint64
// These attributes are not supported by all clouds.
VirtType *string // The type of virtualisation used by the hypervisor, must match the image.
CpuPower *uint64
Tags []string
Deprecated bool
}
InstanceType holds all relevant attributes of the various instance types.
func MatchingInstanceTypes ¶
func MatchingInstanceTypes(allInstanceTypes []InstanceType, region string, cons constraints.Value) ([]InstanceType, error)
MatchingInstanceTypes returns all instance types matching constraints and available in region, sorted by increasing region-specific cost (if known).
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