filter

package
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Published: Feb 18, 2016 License: Apache-2.0, CC-BY-SA-4.0 Imports: 8 Imported by: 0

README

Filters README

The Docker Swarm scheduler comes with multiple filters. To read the end-user filters documentation, visit the Swarm API documentation on docs.docker.com. If you want to modify the filter documentation, start with the docs/scheduler directory in this project.

Documentation

Index

Constants

View Source
const (
	// EQ is exported
	EQ = iota
	// NOTEQ is exported
	NOTEQ
)

Variables

View Source
var (
	// ErrNoHealthyNodeAvailable is exported
	ErrNoHealthyNodeAvailable = errors.New("No healthy node available in the cluster")
)
View Source
var (

	// ErrNotSupported is exported
	ErrNotSupported = errors.New("filter not supported")
)
View Source
var OPERATORS = []string{"==", "!="}

OPERATORS is exported

Functions

func ApplyFilters

func ApplyFilters(filters []Filter, config *cluster.ContainerConfig, nodes []*node.Node, soft bool) ([]*node.Node, error)

ApplyFilters applies a set of filters in batch.

func List added in v0.2.0

func List() []string

List returns the names of all the available filters

Types

type AffinityFilter

type AffinityFilter struct {
}

AffinityFilter selects only nodes based on other containers on the node.

func (*AffinityFilter) Filter

func (f *AffinityFilter) Filter(config *cluster.ContainerConfig, nodes []*node.Node, soft bool) ([]*node.Node, error)

Filter is exported

func (*AffinityFilter) Name added in v0.2.0

func (f *AffinityFilter) Name() string

Name returns the name of the filter

type ConstraintFilter

type ConstraintFilter struct {
}

ConstraintFilter selects only nodes that match certain labels.

func (*ConstraintFilter) Filter

func (f *ConstraintFilter) Filter(config *cluster.ContainerConfig, nodes []*node.Node, soft bool) ([]*node.Node, error)

Filter is exported

func (*ConstraintFilter) Name added in v0.2.0

func (f *ConstraintFilter) Name() string

Name returns the name of the filter

type DependencyFilter

type DependencyFilter struct {
}

DependencyFilter co-schedules dependent containers on the same node.

func (*DependencyFilter) Filter

func (f *DependencyFilter) Filter(config *cluster.ContainerConfig, nodes []*node.Node, _ bool) ([]*node.Node, error)

Filter is exported

func (*DependencyFilter) Name added in v0.2.0

func (f *DependencyFilter) Name() string

Name returns the name of the filter

func (*DependencyFilter) String

func (f *DependencyFilter) String(config *cluster.ContainerConfig) string

Get a string representation of the dependencies found in the container config.

type Filter

type Filter interface {
	Name() string

	// Return a subset of nodes that were accepted by the filtering policy.
	Filter(*cluster.ContainerConfig, []*node.Node, bool) ([]*node.Node, error)
}

Filter is exported

func New

func New(names []string) ([]Filter, error)

New is exported

type HealthFilter

type HealthFilter struct {
}

HealthFilter only schedules containers on healthy nodes.

func (*HealthFilter) Filter

func (f *HealthFilter) Filter(_ *cluster.ContainerConfig, nodes []*node.Node, _ bool) ([]*node.Node, error)

Filter is exported

func (*HealthFilter) Name added in v0.2.0

func (f *HealthFilter) Name() string

Name returns the name of the filter

type PortFilter

type PortFilter struct {
}

PortFilter guarantees that, when scheduling a container binding a public port, only nodes that have not already allocated that same port will be considered.

func (*PortFilter) Filter

func (p *PortFilter) Filter(config *cluster.ContainerConfig, nodes []*node.Node, _ bool) ([]*node.Node, error)

Filter is exported

func (*PortFilter) Name added in v0.2.0

func (p *PortFilter) Name() string

Name returns the name of the filter

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