112 lines
2.9 KiB
Go
112 lines
2.9 KiB
Go
/*
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Copyright 2020 Docker Compose CLI authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package compose
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import (
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"context"
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"github.com/docker/docker/api/types"
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"github.com/pkg/errors"
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)
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// ContainersKey is the context key to access context value os a ContainersStatus
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type ContainersKey struct{}
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// ContainersState state management interface
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type ContainersState interface {
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Get(string) *types.Container
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GetContainers() Containers
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Add(c types.Container)
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AddAll(cs Containers)
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Remove(string) types.Container
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}
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// NewContainersState creates a new container state manager
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func NewContainersState(cs Containers) ContainersState {
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s := containersState{
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observedContainers: &cs,
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}
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return &s
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}
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// ContainersStatus works as a collection container for the observed containers
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type containersState struct {
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observedContainers *Containers
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}
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func (s *containersState) AddAll(cs Containers) {
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for _, c := range cs {
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lValue := append(*s.observedContainers, c)
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s.observedContainers = &lValue
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}
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}
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func (s *containersState) Add(c types.Container) {
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if s.Get(c.ID) == nil {
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lValue := append(*s.observedContainers, c)
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s.observedContainers = &lValue
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}
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}
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func (s *containersState) Remove(id string) types.Container {
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var c types.Container
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var newObserved Containers
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for _, o := range *s.observedContainers {
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if o.ID == id {
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c = o
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continue
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}
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newObserved = append(newObserved, o)
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}
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s.observedContainers = &newObserved
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return c
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}
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func (s *containersState) Get(id string) *types.Container {
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for _, o := range *s.observedContainers {
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if id == o.ID {
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return &o
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}
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}
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return nil
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}
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func (s *containersState) GetContainers() Containers {
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if s.observedContainers != nil && *s.observedContainers != nil {
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return *s.observedContainers
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}
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return make(Containers, 0)
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}
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// GetContextContainerState gets the container state manager
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func GetContextContainerState(ctx context.Context) (ContainersState, error) {
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cState, ok := ctx.Value(ContainersKey{}).(*containersState)
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if !ok {
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return nil, errors.New("containers' containersState not available in context")
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}
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return cState, nil
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}
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func (s composeService) getUpdatedContainersStateContext(ctx context.Context, projectName string) (context.Context, error) {
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observedState, err := s.getContainers(ctx, projectName, oneOffInclude, true)
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if err != nil {
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return nil, err
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}
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containerState := NewContainersState(observedState)
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return context.WithValue(ctx, ContainersKey{}, containerState), nil
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}
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