aws_cloud

package
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 Go to latest Published: Jan 6, 2016 License: Apache-2.0 Imports: 25 Imported by: 0

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Index

Constants

View Source 
const MaxReadThenCreateRetries = 30

We sometimes read to see if something exists; then try to create it if we didn't find it This can fail once in a consistent system if done in parallel In an eventually consistent system, it could fail unboundedly MaxReadThenCreateRetries sets the maxiumum number of attempts we will make

View Source 
const ProviderName = "aws"
View Source 
const TagNameKubernetesCluster = "KubernetesCluster"

The tag name we use to differentiate multiple logically independent clusters running in the same AZ

Variables

This section is empty.

Functions

This section is empty.

Types

type ASG 

type ASG interface {
	UpdateAutoScalingGroup(*autoscaling.UpdateAutoScalingGroupInput) (*autoscaling.UpdateAutoScalingGroupOutput, error)
	DescribeAutoScalingGroups(*autoscaling.DescribeAutoScalingGroupsInput) (*autoscaling.DescribeAutoScalingGroupsOutput, error)
}

This is a simple pass-through of the Autoscaling client interface, which allows for testing

type AWSCloud 

type AWSCloud struct {
	// contains filtered or unexported fields
}

AWSCloud is an implementation of Interface, TCPLoadBalancer and Instances for Amazon Web Services.

func (*AWSCloud) AddSSHKeyToAllInstances 

func (self *AWSCloud) AddSSHKeyToAllInstances(user string, keyData []byte) error

func (*AWSCloud) AttachDisk 

func (aws *AWSCloud) AttachDisk(instanceName string, diskName string, readOnly bool) (string, error)

Implements Volumes.AttachDisk

func (*AWSCloud) Clusters 

func (aws *AWSCloud) Clusters() (cloudprovider.Clusters, bool)

func (*AWSCloud) Configure 

func (v *AWSCloud) Configure(name string, spec *api.NodeSpec) error

func (*AWSCloud) CreateRoute 

func (s *AWSCloud) CreateRoute(clusterName string, nameHint string, route *cloudprovider.Route) error

CreateRoute implements Routes.CreateRoute Create the described route

func (*AWSCloud) CreateVolume 

func (aws *AWSCloud) CreateVolume(volumeOptions *VolumeOptions) (string, error)

Implements Volumes.CreateVolume

func (*AWSCloud) CurrentNodeName 

func (a *AWSCloud) CurrentNodeName(hostname string) (string, error)

func (*AWSCloud) DeleteRoute 

func (s *AWSCloud) DeleteRoute(clusterName string, route *cloudprovider.Route) error

DeleteRoute implements Routes.DeleteRoute Delete the specified route

func (*AWSCloud) DeleteVolume 

func (aws *AWSCloud) DeleteVolume(volumeName string) error

Implements Volumes.DeleteVolume

func (*AWSCloud) DescribeInstanceGroup 

func (a *AWSCloud) DescribeInstanceGroup(instanceGroupName string) (InstanceGroupInfo, error)

Implement InstanceGroups.DescribeInstanceGroup Queries the cloud provider for information about the specified instance group

func (*AWSCloud) DetachDisk 

func (aws *AWSCloud) DetachDisk(instanceName string, diskName string) error

Implements Volumes.DetachDisk

func (*AWSCloud) EnsureTCPLoadBalancer 

func (s *AWSCloud) EnsureTCPLoadBalancer(name, region string, publicIP net.IP, ports []*api.ServicePort, hosts []string, affinity api.ServiceAffinity) (*api.LoadBalancerStatus, error)

EnsureTCPLoadBalancer implements TCPLoadBalancer.EnsureTCPLoadBalancer TODO(justinsb) It is weird that these take a region. I suspect it won't work cross-region anwyay.

func (*AWSCloud) EnsureTCPLoadBalancerDeleted 

func (s *AWSCloud) EnsureTCPLoadBalancerDeleted(name, region string) error

EnsureTCPLoadBalancerDeleted implements TCPLoadBalancer.EnsureTCPLoadBalancerDeleted.

func (*AWSCloud) ExternalID 

func (aws *AWSCloud) ExternalID(name string) (string, error)

ExternalID returns the cloud provider ID of the specified instance (deprecated). Note that if the instance does not exist or is no longer running, we must return ("", cloudprovider.InstanceNotFound)

func (*AWSCloud) GetTCPLoadBalancer 

func (s *AWSCloud) GetTCPLoadBalancer(name, region string) (*api.LoadBalancerStatus, bool, error)

GetTCPLoadBalancer is an implementation of TCPLoadBalancer.GetTCPLoadBalancer

func (*AWSCloud) GetZone 

func (self *AWSCloud) GetZone() (cloudprovider.Zone, error)

GetZone implements Zones.GetZone

func (*AWSCloud) InstanceID 

func (aws *AWSCloud) InstanceID(name string) (string, error)

InstanceID returns the cloud provider ID of the specified instance.

func (*AWSCloud) Instances 

func (aws *AWSCloud) Instances() (cloudprovider.Instances, bool)

Instances returns an implementation of Instances for Amazon Web Services.

func (*AWSCloud) List 

func (aws *AWSCloud) List(filter string) ([]string, error)

List is an implementation of Instances.List.

func (*AWSCloud) ListRoutes 

func (s *AWSCloud) ListRoutes(clusterName string) ([]*cloudprovider.Route, error)

ListRoutes implements Routes.ListRoutes List all routes that match the filter

func (*AWSCloud) NodeAddresses 

func (aws *AWSCloud) NodeAddresses(name string) ([]api.NodeAddress, error)

NodeAddresses is an implementation of Instances.NodeAddresses.

func (*AWSCloud) ProviderName 

func (aws *AWSCloud) ProviderName() string

ProviderName returns the cloud provider ID.

func (*AWSCloud) Release 

func (v *AWSCloud) Release(name string) error

func (*AWSCloud) ResizeInstanceGroup 

func (a *AWSCloud) ResizeInstanceGroup(instanceGroupName string, size int) error

Implement InstanceGroups.ResizeInstanceGroup Set the size to the fixed size

func (*AWSCloud) Routes 

func (aws *AWSCloud) Routes() (cloudprovider.Routes, bool)

Routes returns an implementation of Routes for Amazon Web Services.

func (*AWSCloud) TCPLoadBalancer 

func (s *AWSCloud) TCPLoadBalancer() (cloudprovider.TCPLoadBalancer, bool)

TCPLoadBalancer returns an implementation of TCPLoadBalancer for Amazon Web Services.

func (*AWSCloud) UpdateTCPLoadBalancer 

func (s *AWSCloud) UpdateTCPLoadBalancer(name, region string, hosts []string) error

UpdateTCPLoadBalancer implements TCPLoadBalancer.UpdateTCPLoadBalancer

func (*AWSCloud) Zones 

func (aws *AWSCloud) Zones() (cloudprovider.Zones, bool)

Zones returns an implementation of Zones for Amazon Web Services.

type AWSCloudConfig 

type AWSCloudConfig struct {
	Global struct {
		// TODO: Is there any use for this?  We can get it from the instance metadata service
		// Maybe if we're not running on AWS, e.g. bootstrap; for now it is not very useful
		Zone string

		KubernetesClusterTag string
	}
}

type AWSServices 

type AWSServices interface {
	Compute(region string) (EC2, error)
	LoadBalancing(region string) (ELB, error)
	Autoscaling(region string) (ASG, error)
	Metadata() (EC2Metadata, error)
}

Abstraction over AWS, to allow mocking/other implementations

type EC2 

type EC2 interface {
	// Query EC2 for instances matching the filter
	DescribeInstances(request *ec2.DescribeInstancesInput) ([]*ec2.Instance, error)

	// Attach a volume to an instance
	AttachVolume(volumeID, instanceId, mountDevice string) (resp *ec2.VolumeAttachment, err error)
	// Detach a volume from an instance it is attached to
	DetachVolume(request *ec2.DetachVolumeInput) (resp *ec2.VolumeAttachment, err error)
	// Lists volumes
	DescribeVolumes(request *ec2.DescribeVolumesInput) ([]*ec2.Volume, error)
	// Create an EBS volume
	CreateVolume(request *ec2.CreateVolumeInput) (resp *ec2.Volume, err error)
	// Delete an EBS volume
	DeleteVolume(volumeID string) (resp *ec2.DeleteVolumeOutput, err error)

	DescribeSecurityGroups(request *ec2.DescribeSecurityGroupsInput) ([]*ec2.SecurityGroup, error)

	CreateSecurityGroup(*ec2.CreateSecurityGroupInput) (*ec2.CreateSecurityGroupOutput, error)
	DeleteSecurityGroup(request *ec2.DeleteSecurityGroupInput) (*ec2.DeleteSecurityGroupOutput, error)

	AuthorizeSecurityGroupIngress(*ec2.AuthorizeSecurityGroupIngressInput) (*ec2.AuthorizeSecurityGroupIngressOutput, error)
	RevokeSecurityGroupIngress(*ec2.RevokeSecurityGroupIngressInput) (*ec2.RevokeSecurityGroupIngressOutput, error)

	DescribeSubnets(*ec2.DescribeSubnetsInput) ([]*ec2.Subnet, error)

	CreateTags(*ec2.CreateTagsInput) (*ec2.CreateTagsOutput, error)

	DescribeRouteTables(request *ec2.DescribeRouteTablesInput) ([]*ec2.RouteTable, error)
	CreateRoute(request *ec2.CreateRouteInput) (*ec2.CreateRouteOutput, error)
	DeleteRoute(request *ec2.DeleteRouteInput) (*ec2.DeleteRouteOutput, error)

	ModifyInstanceAttribute(request *ec2.ModifyInstanceAttributeInput) (*ec2.ModifyInstanceAttributeOutput, error)
}

TODO: Should we rename this to AWS (EBS & ELB are not technically part of EC2) Abstraction over EC2, to allow mocking/other implementations Note that the DescribeX functions return a list, so callers don't need to deal with paging

type EC2Metadata 

type EC2Metadata interface {
	// Query the EC2 metadata service (used to discover instance-id etc)
	GetMetadata(path string) (string, error)
}

Abstraction over the AWS metadata service

type ELB 

type ELB interface {
	CreateLoadBalancer(*elb.CreateLoadBalancerInput) (*elb.CreateLoadBalancerOutput, error)
	DeleteLoadBalancer(*elb.DeleteLoadBalancerInput) (*elb.DeleteLoadBalancerOutput, error)
	DescribeLoadBalancers(*elb.DescribeLoadBalancersInput) (*elb.DescribeLoadBalancersOutput, error)
	RegisterInstancesWithLoadBalancer(*elb.RegisterInstancesWithLoadBalancerInput) (*elb.RegisterInstancesWithLoadBalancerOutput, error)
	DeregisterInstancesFromLoadBalancer(*elb.DeregisterInstancesFromLoadBalancerInput) (*elb.DeregisterInstancesFromLoadBalancerOutput, error)

	DetachLoadBalancerFromSubnets(*elb.DetachLoadBalancerFromSubnetsInput) (*elb.DetachLoadBalancerFromSubnetsOutput, error)
	AttachLoadBalancerToSubnets(*elb.AttachLoadBalancerToSubnetsInput) (*elb.AttachLoadBalancerToSubnetsOutput, error)

	CreateLoadBalancerListeners(*elb.CreateLoadBalancerListenersInput) (*elb.CreateLoadBalancerListenersOutput, error)
	DeleteLoadBalancerListeners(*elb.DeleteLoadBalancerListenersInput) (*elb.DeleteLoadBalancerListenersOutput, error)

	ApplySecurityGroupsToLoadBalancer(*elb.ApplySecurityGroupsToLoadBalancerInput) (*elb.ApplySecurityGroupsToLoadBalancerOutput, error)

	ConfigureHealthCheck(*elb.ConfigureHealthCheckInput) (*elb.ConfigureHealthCheckOutput, error)
}

This is a simple pass-through of the ELB client interface, which allows for testing

type InstanceGroupInfo 

type InstanceGroupInfo interface {
	// The number of instances currently running under control of this group
	CurrentSize() (int, error)
}

InstanceGroupInfo is returned by InstanceGroups.Describe, and exposes information about the group.

type InstanceGroups 

type InstanceGroups interface {
	// Set the size to the fixed size
	ResizeInstanceGroup(instanceGroupName string, size int) error
	// Queries the cloud provider for information about the specified instance group
	DescribeInstanceGroup(instanceGroupName string) (InstanceGroupInfo, error)
}

InstanceGroups is an interface for managing cloud-managed instance groups / autoscaling instance groups TODO: Allow other clouds to implement this

type VolumeOptions 

type VolumeOptions struct {
	CapacityMB int
}

type Volumes 

type Volumes interface {
	// Attach the disk to the specified instance
	// instanceName can be empty to mean "the instance on which we are running"
	// Returns the device (e.g. /dev/xvdf) where we attached the volume
	AttachDisk(instanceName string, volumeName string, readOnly bool) (string, error)
	// Detach the disk from the specified instance
	// instanceName can be empty to mean "the instance on which we are running"
	DetachDisk(instanceName string, volumeName string) error

	// Create a volume with the specified options
	CreateVolume(volumeOptions *VolumeOptions) (volumeName string, err error)
	DeleteVolume(volumeName string) error
}

Volumes is an interface for managing cloud-provisioned volumes TODO: Allow other clouds to implement this

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