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/*
Copyright 2020 Docker Compose CLI authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package compose
import (
"context"
"fmt"
"sort"
"strconv"
"github.com/compose-spec/compose-go/v2/types"
"github.com/docker/compose/v2/pkg/api"
"github.com/docker/compose/v2/pkg/utils"
moby "github.com/docker/docker/api/types"
containerType "github.com/docker/docker/api/types/container"
"github.com/docker/docker/api/types/filters"
)
// Containers is a set of moby Container
type Containers []moby.Container
type oneOff int
const (
oneOffInclude = oneOff(iota)
oneOffExclude
oneOffOnly
)
func (s *composeService) getContainers(ctx context.Context, project string, oneOff oneOff, all bool, selectedServices ...string) (Containers, error) {
var containers Containers
f := getDefaultFilters(project, oneOff, selectedServices...)
containers, err := s.apiClient().ContainerList(ctx, containerType.ListOptions{
Filters: filters.NewArgs(f...),
All: all,
})
if err != nil {
return nil, err
}
if len(selectedServices) > 1 {
containers = containers.filter(isService(selectedServices...))
}
return containers, nil
}
func getDefaultFilters(projectName string, oneOff oneOff, selectedServices ...string) []filters.KeyValuePair {
f := []filters.KeyValuePair{projectFilter(projectName)}
if len(selectedServices) == 1 {
f = append(f, serviceFilter(selectedServices[0]))
}
f = append(f, hasConfigHashLabel())
switch oneOff {
case oneOffOnly:
f = append(f, oneOffFilter(true))
case oneOffExclude:
f = append(f, oneOffFilter(false))
case oneOffInclude:
}
return f
}
func (s *composeService) getSpecifiedContainer(ctx context.Context, projectName string, oneOff oneOff, all bool, serviceName string, containerIndex int) (moby.Container, error) {
defaultFilters := getDefaultFilters(projectName, oneOff, serviceName)
if containerIndex > 0 {
defaultFilters = append(defaultFilters, containerNumberFilter(containerIndex))
}
containers, err := s.apiClient().ContainerList(ctx, containerType.ListOptions{
Filters: filters.NewArgs(
defaultFilters...,
),
All: all,
})
if err != nil {
return moby.Container{}, err
}
if len(containers) < 1 {
if containerIndex > 0 {
return moby.Container{}, fmt.Errorf("service %q is not running container #%d", serviceName, containerIndex)
}
return moby.Container{}, fmt.Errorf("service %q is not running", serviceName)
}
// Sort by container number first, then put one-off containers at the end
sort.Slice(containers, func(i, j int) bool {
numberLabelX, _ := strconv.Atoi(containers[i].Labels[api.ContainerNumberLabel])
numberLabelY, _ := strconv.Atoi(containers[j].Labels[api.ContainerNumberLabel])
IsOneOffLabelTrueX := containers[i].Labels[api.OneoffLabel] == "True"
IsOneOffLabelTrueY := containers[j].Labels[api.OneoffLabel] == "True"
if numberLabelX == numberLabelY {
return !IsOneOffLabelTrueX && IsOneOffLabelTrueY
}
return numberLabelX < numberLabelY
})
container := containers[0]
return container, nil
}
// containerPredicate define a predicate we want container to satisfy for filtering operations
type containerPredicate func(c moby.Container) bool
func matches(c moby.Container, predicates ...containerPredicate) bool {
for _, predicate := range predicates {
if !predicate(c) {
return false
}
}
return true
}
func isService(services ...string) containerPredicate {
return func(c moby.Container) bool {
service := c.Labels[api.ServiceLabel]
return utils.StringContains(services, service)
}
}
func isRunning() containerPredicate {
return func(c moby.Container) bool {
return c.State == "running"
}
}
// isOrphaned is a predicate to select containers without a matching service definition in compose project
func isOrphaned(project *types.Project) containerPredicate {
services := append(project.ServiceNames(), project.DisabledServiceNames()...)
return func(c moby.Container) bool {
// One-off container
v, ok := c.Labels[api.OneoffLabel]
if ok && v == "True" {
return c.State == ContainerExited || c.State == ContainerDead
}
// Service that is not defined in the compose model
service := c.Labels[api.ServiceLabel]
return !utils.StringContains(services, service)
}
}
func isNotOneOff(c moby.Container) bool {
v, ok := c.Labels[api.OneoffLabel]
return !ok || v == "False"
}
// filter return Containers with elements to match predicate
func (containers Containers) filter(predicates ...containerPredicate) Containers {
var filtered Containers
for _, c := range containers {
if matches(c, predicates...) {
filtered = append(filtered, c)
}
}
return filtered
}
func (containers Containers) names() []string {
var names []string
for _, c := range containers {
names = append(names, getCanonicalContainerName(c))
}
return names
}
func (containers Containers) forEach(fn func(moby.Container)) {
for _, c := range containers {
fn(c)
}
}
func (containers Containers) sorted() Containers {
sort.Slice(containers, func(i, j int) bool {
return getCanonicalContainerName(containers[i]) < getCanonicalContainerName(containers[j])
})
return containers
}
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