mirror of https://github.com/docker/docs.git
84 lines
1.9 KiB
Go
84 lines
1.9 KiB
Go
package node
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import (
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"errors"
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"strings"
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"github.com/docker/swarm/cluster"
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)
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// Node is an abstract type used by the scheduler.
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type Node struct {
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ID string
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IP string
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Addr string
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Name string
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Labels map[string]string
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Containers []*cluster.Container
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Images []*cluster.Image
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UsedMemory int64
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UsedCpus int64
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TotalMemory int64
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TotalCpus int64
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IsHealthy bool
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}
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// NewNode creates a node from an engine.
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func NewNode(e *cluster.Engine) *Node {
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return &Node{
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ID: e.ID,
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IP: e.IP,
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Addr: e.Addr,
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Name: e.Name,
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Labels: e.Labels,
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Containers: e.Containers(),
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Images: e.Images(),
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UsedMemory: e.UsedMemory(),
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UsedCpus: e.UsedCpus(),
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TotalMemory: e.TotalMemory(),
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TotalCpus: e.TotalCpus(),
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IsHealthy: e.IsHealthy(),
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}
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}
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// Container returns the container with IDOrName in the engine.
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func (n *Node) Container(IDOrName string) *cluster.Container {
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// Abort immediately if the name is empty.
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if len(IDOrName) == 0 {
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return nil
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}
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for _, container := range n.Containers {
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// Match ID prefix.
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if strings.HasPrefix(container.Id, IDOrName) {
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return container
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}
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// Match name, /name or engine/name.
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for _, name := range container.Names {
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if name == IDOrName || name == "/"+IDOrName || container.Engine.ID+name == IDOrName || container.Engine.Name+name == IDOrName {
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return container
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}
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}
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}
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return nil
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}
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// AddContainer injects a container into the internal state.
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func (n *Node) AddContainer(container *cluster.Container) error {
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if container.Config != nil {
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memory := container.Config.Memory
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cpus := container.Config.CpuShares
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if n.TotalMemory-memory < 0 || n.TotalCpus-cpus < 0 {
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return errors.New("not enough resources")
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}
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n.UsedMemory = n.UsedMemory + memory
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n.UsedCpus = n.UsedCpus + cpus
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}
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n.Containers = append(n.Containers, container)
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return nil
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}
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