compose/pkg/compose/create.go

1313 lines
38 KiB
Go

/*
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 (
"bytes"
"context"
"encoding/json"
"errors"
"fmt"
"os"
"path"
"path/filepath"
"strconv"
"strings"
moby "github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/blkiodev"
"github.com/docker/docker/api/types/container"
"github.com/docker/docker/api/types/filters"
"github.com/docker/docker/api/types/mount"
"github.com/docker/docker/api/types/network"
"github.com/docker/docker/api/types/strslice"
"github.com/docker/docker/api/types/versions"
volume_api "github.com/docker/docker/api/types/volume"
"github.com/docker/docker/errdefs"
"github.com/docker/go-connections/nat"
"github.com/docker/go-units"
"github.com/sirupsen/logrus"
"github.com/compose-spec/compose-go/v2/types"
"github.com/docker/compose/v2/pkg/api"
"github.com/docker/compose/v2/pkg/progress"
"github.com/docker/compose/v2/pkg/utils"
)
type createOptions struct {
AutoRemove bool
AttachStdin bool
UseNetworkAliases bool
Labels types.Labels
}
type createConfigs struct {
Container *container.Config
Host *container.HostConfig
Network *network.NetworkingConfig
Links []string
}
func (s *composeService) Create(ctx context.Context, project *types.Project, createOpts api.CreateOptions) error {
return progress.RunWithTitle(ctx, func(ctx context.Context) error {
return s.create(ctx, project, createOpts)
}, s.stdinfo(), "Creating")
}
func (s *composeService) create(ctx context.Context, project *types.Project, options api.CreateOptions) error {
if len(options.Services) == 0 {
options.Services = project.ServiceNames()
}
var observedState Containers
observedState, err := s.getContainers(ctx, project.Name, oneOffInclude, true)
if err != nil {
return err
}
err = s.ensureImagesExists(ctx, project, options.Build, options.QuietPull)
if err != nil {
return err
}
prepareNetworks(project)
if err := s.ensureNetworks(ctx, project.Networks); err != nil {
return err
}
if err := s.ensureProjectVolumes(ctx, project); err != nil {
return err
}
allServiceNames := append(project.ServiceNames(), project.DisabledServiceNames()...)
orphans := observedState.filter(isNotService(allServiceNames...))
if len(orphans) > 0 && !options.IgnoreOrphans {
if options.RemoveOrphans {
err := s.removeContainers(ctx, orphans, nil, false)
if err != nil {
return err
}
} else {
logrus.Warnf("Found orphan containers (%s) for this project. If "+
"you removed or renamed this service in your compose "+
"file, you can run this command with the "+
"--remove-orphans flag to clean it up.", orphans.names())
}
}
return newConvergence(options.Services, observedState, s).apply(ctx, project, options)
}
func prepareNetworks(project *types.Project) {
for k, network := range project.Networks {
network.Labels = network.Labels.Add(api.NetworkLabel, k)
network.Labels = network.Labels.Add(api.ProjectLabel, project.Name)
network.Labels = network.Labels.Add(api.VersionLabel, api.ComposeVersion)
project.Networks[k] = network
}
}
func (s *composeService) ensureNetworks(ctx context.Context, networks types.Networks) error {
for i, network := range networks {
err := s.ensureNetwork(ctx, &network)
if err != nil {
return err
}
networks[i] = network
}
return nil
}
func (s *composeService) ensureProjectVolumes(ctx context.Context, project *types.Project) error {
for k, volume := range project.Volumes {
volume.Labels = volume.Labels.Add(api.VolumeLabel, k)
volume.Labels = volume.Labels.Add(api.ProjectLabel, project.Name)
volume.Labels = volume.Labels.Add(api.VersionLabel, api.ComposeVersion)
err := s.ensureVolume(ctx, volume, project.Name)
if err != nil {
return err
}
}
return nil
}
func (s *composeService) getCreateConfigs(ctx context.Context,
p *types.Project,
service types.ServiceConfig,
number int,
inherit *moby.Container,
opts createOptions,
) (createConfigs, error) {
labels, err := s.prepareLabels(opts.Labels, service, number)
if err != nil {
return createConfigs{}, err
}
var (
runCmd strslice.StrSlice
entrypoint strslice.StrSlice
)
if service.Command != nil {
runCmd = strslice.StrSlice(service.Command)
}
if service.Entrypoint != nil {
entrypoint = strslice.StrSlice(service.Entrypoint)
}
var (
tty = service.Tty
stdinOpen = service.StdinOpen
)
proxyConfig := types.MappingWithEquals(s.configFile().ParseProxyConfig(s.apiClient().DaemonHost(), nil))
env := proxyConfig.OverrideBy(service.Environment)
var mainNwName string
var mainNw *types.ServiceNetworkConfig
if len(service.Networks) > 0 {
mainNwName = service.NetworksByPriority()[0]
mainNw = service.Networks[mainNwName]
}
macAddress, err := s.prepareContainerMACAddress(ctx, service, mainNw, mainNwName)
if err != nil {
return createConfigs{}, err
}
healthcheck, err := s.ToMobyHealthCheck(ctx, service.HealthCheck)
if err != nil {
return createConfigs{}, err
}
var containerConfig = container.Config{
Hostname: service.Hostname,
Domainname: service.DomainName,
User: service.User,
ExposedPorts: buildContainerPorts(service),
Tty: tty,
OpenStdin: stdinOpen,
StdinOnce: opts.AttachStdin && stdinOpen,
AttachStdin: opts.AttachStdin,
AttachStderr: true,
AttachStdout: true,
Cmd: runCmd,
Image: api.GetImageNameOrDefault(service, p.Name),
WorkingDir: service.WorkingDir,
Entrypoint: entrypoint,
NetworkDisabled: service.NetworkMode == "disabled",
MacAddress: macAddress,
Labels: labels,
StopSignal: service.StopSignal,
Env: ToMobyEnv(env),
Healthcheck: healthcheck,
StopTimeout: ToSeconds(service.StopGracePeriod),
} // VOLUMES/MOUNTS/FILESYSTEMS
tmpfs := map[string]string{}
for _, t := range service.Tmpfs {
if arr := strings.SplitN(t, ":", 2); len(arr) > 1 {
tmpfs[arr[0]] = arr[1]
} else {
tmpfs[arr[0]] = ""
}
}
binds, mounts, err := s.buildContainerVolumes(ctx, *p, service, inherit)
if err != nil {
return createConfigs{}, err
}
// NETWORKING
links, err := s.getLinks(ctx, p.Name, service, number)
if err != nil {
return createConfigs{}, err
}
networkMode, networkingConfig := defaultNetworkSettings(p, service, number, links, opts.UseNetworkAliases)
portBindings := buildContainerPortBindingOptions(service)
// MISC
resources := getDeployResources(service)
var logConfig container.LogConfig
if service.Logging != nil {
logConfig = container.LogConfig{
Type: service.Logging.Driver,
Config: service.Logging.Options,
}
}
securityOpts, unconfined, err := parseSecurityOpts(p, service.SecurityOpt)
if err != nil {
return createConfigs{}, err
}
hostConfig := container.HostConfig{
AutoRemove: opts.AutoRemove,
Binds: binds,
Mounts: mounts,
CapAdd: strslice.StrSlice(service.CapAdd),
CapDrop: strslice.StrSlice(service.CapDrop),
NetworkMode: networkMode,
Init: service.Init,
IpcMode: container.IpcMode(service.Ipc),
CgroupnsMode: container.CgroupnsMode(service.Cgroup),
ReadonlyRootfs: service.ReadOnly,
RestartPolicy: getRestartPolicy(service),
ShmSize: int64(service.ShmSize),
Sysctls: service.Sysctls,
PortBindings: portBindings,
Resources: resources,
VolumeDriver: service.VolumeDriver,
VolumesFrom: service.VolumesFrom,
DNS: service.DNS,
DNSSearch: service.DNSSearch,
DNSOptions: service.DNSOpts,
ExtraHosts: service.ExtraHosts.AsList(":"),
SecurityOpt: securityOpts,
UsernsMode: container.UsernsMode(service.UserNSMode),
UTSMode: container.UTSMode(service.Uts),
Privileged: service.Privileged,
PidMode: container.PidMode(service.Pid),
Tmpfs: tmpfs,
Isolation: container.Isolation(service.Isolation),
Runtime: service.Runtime,
LogConfig: logConfig,
GroupAdd: service.GroupAdd,
Links: links,
OomScoreAdj: int(service.OomScoreAdj),
}
if unconfined {
hostConfig.MaskedPaths = []string{}
hostConfig.ReadonlyPaths = []string{}
}
cfgs := createConfigs{
Container: &containerConfig,
Host: &hostConfig,
Network: networkingConfig,
Links: links,
}
return cfgs, nil
}
// prepareContainerMACAddress handles the service-level mac_address field and the newer mac_address field added to service
// network config. This newer field is only compatible with the Engine API v1.44 (and onwards), and this API version
// also deprecates the container-wide mac_address field. Thus, this method will validate service config and mutate the
// passed mainNw to provide backward-compatibility whenever possible.
//
// It returns the container-wide MAC address, but this value will be kept empty for newer API versions.
func (s *composeService) prepareContainerMACAddress(ctx context.Context, service types.ServiceConfig, mainNw *types.ServiceNetworkConfig, nwName string) (string, error) {
version, err := s.RuntimeVersion(ctx)
if err != nil {
return "", err
}
// Engine API 1.44 added support for endpoint-specific MAC address and now returns a warning when a MAC address is
// set in container.Config. Thus, we have to jump through a number of hoops:
//
// 1. Top-level mac_address and main endpoint's MAC address should be the same ;
// 2. If supported by the API, top-level mac_address should be migrated to the main endpoint and container.Config
// should be kept empty ;
// 3. Otherwise, the endpoint mac_address should be set in container.Config and no other endpoint-specific
// mac_address can be specified. If that's the case, use top-level mac_address ;
//
// After that, if an endpoint mac_address is set, it's either user-defined or migrated by the code below, so
// there's no need to check for API version in defaultNetworkSettings.
macAddress := service.MacAddress
if macAddress != "" && mainNw != nil && mainNw.MacAddress != "" && mainNw.MacAddress != macAddress {
return "", fmt.Errorf("the service-level mac_address should have the same value as network %s", nwName)
}
if versions.GreaterThanOrEqualTo(version, "1.44") {
if mainNw != nil && mainNw.MacAddress == "" {
mainNw.MacAddress = macAddress
}
macAddress = ""
} else if len(service.Networks) > 0 {
var withMacAddress []string
for nwName, nw := range service.Networks {
if nw != nil && nw.MacAddress != "" {
withMacAddress = append(withMacAddress, nwName)
}
}
if len(withMacAddress) > 1 {
return "", fmt.Errorf("a MAC address is specified for multiple networks (%s), but this feature requires Docker Engine 1.44 or later (currently: %s)", strings.Join(withMacAddress, ", "), version)
}
if mainNw != nil {
macAddress = mainNw.MacAddress
}
}
return macAddress, nil
}
func getAliases(project *types.Project, service types.ServiceConfig, serviceIndex int, networkKey string, useNetworkAliases bool) []string {
aliases := []string{getContainerName(project.Name, service, serviceIndex)}
if useNetworkAliases {
aliases = append(aliases, service.Name)
if cfg := service.Networks[networkKey]; cfg != nil {
aliases = append(aliases, cfg.Aliases...)
}
}
return aliases
}
func createEndpointSettings(p *types.Project, service types.ServiceConfig, serviceIndex int, networkKey string, links []string, useNetworkAliases bool) *network.EndpointSettings {
config := service.Networks[networkKey]
var ipam *network.EndpointIPAMConfig
var (
ipv4Address string
ipv6Address string
macAddress string
)
if config != nil {
ipv4Address = config.Ipv4Address
ipv6Address = config.Ipv6Address
ipam = &network.EndpointIPAMConfig{
IPv4Address: ipv4Address,
IPv6Address: ipv6Address,
LinkLocalIPs: config.LinkLocalIPs,
}
macAddress = config.MacAddress
}
return &network.EndpointSettings{
Aliases: getAliases(p, service, serviceIndex, networkKey, useNetworkAliases),
Links: links,
IPAddress: ipv4Address,
IPv6Gateway: ipv6Address,
IPAMConfig: ipam,
MacAddress: macAddress,
}
}
// copy/pasted from https://github.com/docker/cli/blob/9de1b162f/cli/command/container/opts.go#L673-L697 + RelativePath
// TODO find so way to share this code with docker/cli
func parseSecurityOpts(p *types.Project, securityOpts []string) ([]string, bool, error) {
var (
unconfined bool
parsed []string
)
for _, opt := range securityOpts {
if opt == "systempaths=unconfined" {
unconfined = true
continue
}
con := strings.SplitN(opt, "=", 2)
if len(con) == 1 && con[0] != "no-new-privileges" {
if strings.Contains(opt, ":") {
con = strings.SplitN(opt, ":", 2)
} else {
return securityOpts, false, fmt.Errorf("Invalid security-opt: %q", opt)
}
}
if con[0] == "seccomp" && con[1] != "unconfined" {
f, err := os.ReadFile(p.RelativePath(con[1]))
if err != nil {
return securityOpts, false, fmt.Errorf("opening seccomp profile (%s) failed: %w", con[1], err)
}
b := bytes.NewBuffer(nil)
if err := json.Compact(b, f); err != nil {
return securityOpts, false, fmt.Errorf("compacting json for seccomp profile (%s) failed: %w", con[1], err)
}
parsed = append(parsed, fmt.Sprintf("seccomp=%s", b.Bytes()))
} else {
parsed = append(parsed, opt)
}
}
return parsed, unconfined, nil
}
func (s *composeService) prepareLabels(labels types.Labels, service types.ServiceConfig, number int) (map[string]string, error) {
hash, err := ServiceHash(service)
if err != nil {
return nil, err
}
labels[api.ConfigHashLabel] = hash
labels[api.ContainerNumberLabel] = strconv.Itoa(number)
var dependencies []string
for s, d := range service.DependsOn {
dependencies = append(dependencies, fmt.Sprintf("%s:%s:%t", s, d.Condition, d.Restart))
}
labels[api.DependenciesLabel] = strings.Join(dependencies, ",")
return labels, nil
}
// defaultNetworkSettings determines the container.NetworkMode and corresponding network.NetworkingConfig (nil if not applicable).
func defaultNetworkSettings(
project *types.Project,
service types.ServiceConfig,
serviceIndex int,
links []string,
useNetworkAliases bool,
) (container.NetworkMode, *network.NetworkingConfig) {
if service.NetworkMode != "" {
return container.NetworkMode(service.NetworkMode), nil
}
if len(project.Networks) == 0 {
return "none", nil
}
var networkKey string
if len(service.Networks) > 0 {
networkKey = service.NetworksByPriority()[0]
} else {
networkKey = "default"
}
mobyNetworkName := project.Networks[networkKey].Name
epSettings := createEndpointSettings(project, service, serviceIndex, networkKey, links, useNetworkAliases)
networkConfig := &network.NetworkingConfig{
EndpointsConfig: map[string]*network.EndpointSettings{
mobyNetworkName: epSettings,
},
}
// From the Engine API docs:
// > Supported standard values are: bridge, host, none, and container:<name|id>.
// > Any other value is taken as a custom network's name to which this container should connect to.
return container.NetworkMode(mobyNetworkName), networkConfig
}
func getRestartPolicy(service types.ServiceConfig) container.RestartPolicy {
var restart container.RestartPolicy
if service.Restart != "" {
split := strings.Split(service.Restart, ":")
var attempts int
if len(split) > 1 {
attempts, _ = strconv.Atoi(split[1])
}
restart = container.RestartPolicy{
Name: mapRestartPolicyCondition(split[0]),
MaximumRetryCount: attempts,
}
}
if service.Deploy != nil && service.Deploy.RestartPolicy != nil {
policy := *service.Deploy.RestartPolicy
var attempts int
if policy.MaxAttempts != nil {
attempts = int(*policy.MaxAttempts)
}
restart = container.RestartPolicy{
Name: mapRestartPolicyCondition(policy.Condition),
MaximumRetryCount: attempts,
}
}
return restart
}
func mapRestartPolicyCondition(condition string) container.RestartPolicyMode {
// map definitions of deploy.restart_policy to engine definitions
switch condition {
case "none", "no":
return container.RestartPolicyDisabled
case "on-failure":
return container.RestartPolicyOnFailure
case "unless-stopped":
return container.RestartPolicyUnlessStopped
case "any", "always":
return container.RestartPolicyAlways
default:
return container.RestartPolicyMode(condition)
}
}
func getDeployResources(s types.ServiceConfig) container.Resources {
var swappiness *int64
if s.MemSwappiness != 0 {
val := int64(s.MemSwappiness)
swappiness = &val
}
resources := container.Resources{
CgroupParent: s.CgroupParent,
Memory: int64(s.MemLimit),
MemorySwap: int64(s.MemSwapLimit),
MemorySwappiness: swappiness,
MemoryReservation: int64(s.MemReservation),
OomKillDisable: &s.OomKillDisable,
CPUCount: s.CPUCount,
CPUPeriod: s.CPUPeriod,
CPUQuota: s.CPUQuota,
CPURealtimePeriod: s.CPURTPeriod,
CPURealtimeRuntime: s.CPURTRuntime,
CPUShares: s.CPUShares,
NanoCPUs: int64(s.CPUS * 1e9),
CPUPercent: int64(s.CPUPercent * 100),
CpusetCpus: s.CPUSet,
DeviceCgroupRules: s.DeviceCgroupRules,
}
if s.PidsLimit != 0 {
resources.PidsLimit = &s.PidsLimit
}
setBlkio(s.BlkioConfig, &resources)
if s.Deploy != nil {
setLimits(s.Deploy.Resources.Limits, &resources)
setReservations(s.Deploy.Resources.Reservations, &resources)
}
for _, device := range s.Devices {
// FIXME should use docker/cli parseDevice, unfortunately private
src := ""
dst := ""
permissions := "rwm"
arr := strings.Split(device, ":")
switch len(arr) {
case 3:
permissions = arr[2]
fallthrough
case 2:
dst = arr[1]
fallthrough
case 1:
src = arr[0]
}
if dst == "" {
dst = src
}
resources.Devices = append(resources.Devices, container.DeviceMapping{
PathOnHost: src,
PathInContainer: dst,
CgroupPermissions: permissions,
})
}
ulimits := toUlimits(s.Ulimits)
resources.Ulimits = ulimits
return resources
}
func toUlimits(m map[string]*types.UlimitsConfig) []*units.Ulimit {
var ulimits []*units.Ulimit
for name, u := range m {
soft := u.Single
if u.Soft != 0 {
soft = u.Soft
}
hard := u.Single
if u.Hard != 0 {
hard = u.Hard
}
ulimits = append(ulimits, &units.Ulimit{
Name: name,
Hard: int64(hard),
Soft: int64(soft),
})
}
return ulimits
}
func setReservations(reservations *types.Resource, resources *container.Resources) {
if reservations == nil {
return
}
// Cpu reservation is a swarm option and PIDs is only a limit
// So we only need to map memory reservation and devices
if reservations.MemoryBytes != 0 {
resources.MemoryReservation = int64(reservations.MemoryBytes)
}
for _, device := range reservations.Devices {
resources.DeviceRequests = append(resources.DeviceRequests, container.DeviceRequest{
Capabilities: [][]string{device.Capabilities},
Count: int(device.Count),
DeviceIDs: device.IDs,
Driver: device.Driver,
})
}
}
func setLimits(limits *types.Resource, resources *container.Resources) {
if limits == nil {
return
}
if limits.MemoryBytes != 0 {
resources.Memory = int64(limits.MemoryBytes)
}
if limits.NanoCPUs != "" {
if f, err := strconv.ParseFloat(limits.NanoCPUs, 64); err == nil {
resources.NanoCPUs = int64(f * 1e9)
}
}
if limits.Pids > 0 {
resources.PidsLimit = &limits.Pids
}
}
func setBlkio(blkio *types.BlkioConfig, resources *container.Resources) {
if blkio == nil {
return
}
resources.BlkioWeight = blkio.Weight
for _, b := range blkio.WeightDevice {
resources.BlkioWeightDevice = append(resources.BlkioWeightDevice, &blkiodev.WeightDevice{
Path: b.Path,
Weight: b.Weight,
})
}
for _, b := range blkio.DeviceReadBps {
resources.BlkioDeviceReadBps = append(resources.BlkioDeviceReadBps, &blkiodev.ThrottleDevice{
Path: b.Path,
Rate: uint64(b.Rate),
})
}
for _, b := range blkio.DeviceReadIOps {
resources.BlkioDeviceReadIOps = append(resources.BlkioDeviceReadIOps, &blkiodev.ThrottleDevice{
Path: b.Path,
Rate: uint64(b.Rate),
})
}
for _, b := range blkio.DeviceWriteBps {
resources.BlkioDeviceWriteBps = append(resources.BlkioDeviceWriteBps, &blkiodev.ThrottleDevice{
Path: b.Path,
Rate: uint64(b.Rate),
})
}
for _, b := range blkio.DeviceWriteIOps {
resources.BlkioDeviceWriteIOps = append(resources.BlkioDeviceWriteIOps, &blkiodev.ThrottleDevice{
Path: b.Path,
Rate: uint64(b.Rate),
})
}
}
func buildContainerPorts(s types.ServiceConfig) nat.PortSet {
ports := nat.PortSet{}
for _, s := range s.Expose {
p := nat.Port(s)
ports[p] = struct{}{}
}
for _, p := range s.Ports {
p := nat.Port(fmt.Sprintf("%d/%s", p.Target, p.Protocol))
ports[p] = struct{}{}
}
return ports
}
func buildContainerPortBindingOptions(s types.ServiceConfig) nat.PortMap {
bindings := nat.PortMap{}
for _, port := range s.Ports {
p := nat.Port(fmt.Sprintf("%d/%s", port.Target, port.Protocol))
binding := nat.PortBinding{
HostIP: port.HostIP,
HostPort: port.Published,
}
bindings[p] = append(bindings[p], binding)
}
return bindings
}
func getDependentServiceFromMode(mode string) string {
if strings.HasPrefix(
mode,
types.NetworkModeServicePrefix,
) {
return mode[len(types.NetworkModeServicePrefix):]
}
return ""
}
func (s *composeService) buildContainerVolumes(
ctx context.Context,
p types.Project,
service types.ServiceConfig,
inherit *moby.Container,
) ([]string, []mount.Mount, error) {
var mounts []mount.Mount
var binds []string
image := api.GetImageNameOrDefault(service, p.Name)
imgInspect, _, err := s.apiClient().ImageInspectWithRaw(ctx, image)
if err != nil {
return nil, nil, err
}
mountOptions, err := buildContainerMountOptions(p, service, imgInspect, inherit)
if err != nil {
return nil, nil, err
}
MOUNTS:
for _, m := range mountOptions {
if m.Type == mount.TypeNamedPipe {
mounts = append(mounts, m)
continue
}
if m.Type == mount.TypeBind {
// `Mount` is preferred but does not offer option to created host path if missing
// so `Bind` API is used here with raw volume string
// see https://github.com/moby/moby/issues/43483
for _, v := range service.Volumes {
if v.Target == m.Target {
switch {
case string(m.Type) != v.Type:
v.Source = m.Source
fallthrough
case v.Bind != nil && v.Bind.CreateHostPath:
binds = append(binds, v.String())
continue MOUNTS
}
}
}
}
mounts = append(mounts, m)
}
return binds, mounts, nil
}
func buildContainerMountOptions(p types.Project, s types.ServiceConfig, img moby.ImageInspect, inherit *moby.Container) ([]mount.Mount, error) {
var mounts = map[string]mount.Mount{}
if inherit != nil {
for _, m := range inherit.Mounts {
if m.Type == "tmpfs" {
continue
}
src := m.Source
if m.Type == "volume" {
src = m.Name
}
m.Destination = path.Clean(m.Destination)
if img.Config != nil {
if _, ok := img.Config.Volumes[m.Destination]; ok {
// inherit previous container's anonymous volume
mounts[m.Destination] = mount.Mount{
Type: m.Type,
Source: src,
Target: m.Destination,
ReadOnly: !m.RW,
}
}
}
volumes := []types.ServiceVolumeConfig{}
for _, v := range s.Volumes {
if v.Target != m.Destination || v.Source != "" {
volumes = append(volumes, v)
continue
}
// inherit previous container's anonymous volume
mounts[m.Destination] = mount.Mount{
Type: m.Type,
Source: src,
Target: m.Destination,
ReadOnly: !m.RW,
}
}
s.Volumes = volumes
}
}
mounts, err := fillBindMounts(p, s, mounts)
if err != nil {
return nil, err
}
values := make([]mount.Mount, 0, len(mounts))
for _, v := range mounts {
values = append(values, v)
}
return values, nil
}
func fillBindMounts(p types.Project, s types.ServiceConfig, m map[string]mount.Mount) (map[string]mount.Mount, error) {
for _, v := range s.Volumes {
bindMount, err := buildMount(p, v)
if err != nil {
return nil, err
}
m[bindMount.Target] = bindMount
}
secrets, err := buildContainerSecretMounts(p, s)
if err != nil {
return nil, err
}
for _, s := range secrets {
if _, found := m[s.Target]; found {
continue
}
m[s.Target] = s
}
configs, err := buildContainerConfigMounts(p, s)
if err != nil {
return nil, err
}
for _, c := range configs {
if _, found := m[c.Target]; found {
continue
}
m[c.Target] = c
}
return m, nil
}
func buildContainerConfigMounts(p types.Project, s types.ServiceConfig) ([]mount.Mount, error) {
var mounts = map[string]mount.Mount{}
configsBaseDir := "/"
for _, config := range s.Configs {
target := config.Target
if config.Target == "" {
target = configsBaseDir + config.Source
} else if !isAbsTarget(config.Target) {
target = configsBaseDir + config.Target
}
if config.UID != "" || config.GID != "" || config.Mode != nil {
logrus.Warn("config `uid`, `gid` and `mode` are not supported, they will be ignored")
}
definedConfig := p.Configs[config.Source]
if definedConfig.External {
return nil, fmt.Errorf("unsupported external config %s", definedConfig.Name)
}
if definedConfig.Driver != "" {
return nil, errors.New("Docker Compose does not support configs.*.driver")
}
if definedConfig.TemplateDriver != "" {
return nil, errors.New("Docker Compose does not support configs.*.template_driver")
}
if definedConfig.Environment != "" || definedConfig.Content != "" {
continue
}
bindMount, err := buildMount(p, types.ServiceVolumeConfig{
Type: types.VolumeTypeBind,
Source: definedConfig.File,
Target: target,
ReadOnly: true,
})
if err != nil {
return nil, err
}
mounts[target] = bindMount
}
values := make([]mount.Mount, 0, len(mounts))
for _, v := range mounts {
values = append(values, v)
}
return values, nil
}
func buildContainerSecretMounts(p types.Project, s types.ServiceConfig) ([]mount.Mount, error) {
var mounts = map[string]mount.Mount{}
secretsDir := "/run/secrets/"
for _, secret := range s.Secrets {
target := secret.Target
if secret.Target == "" {
target = secretsDir + secret.Source
} else if !isAbsTarget(secret.Target) {
target = secretsDir + secret.Target
}
if secret.UID != "" || secret.GID != "" || secret.Mode != nil {
logrus.Warn("secrets `uid`, `gid` and `mode` are not supported, they will be ignored")
}
definedSecret := p.Secrets[secret.Source]
if definedSecret.External {
return nil, fmt.Errorf("unsupported external secret %s", definedSecret.Name)
}
if definedSecret.Driver != "" {
return nil, errors.New("Docker Compose does not support secrets.*.driver")
}
if definedSecret.TemplateDriver != "" {
return nil, errors.New("Docker Compose does not support secrets.*.template_driver")
}
if definedSecret.Environment != "" {
continue
}
mnt, err := buildMount(p, types.ServiceVolumeConfig{
Type: types.VolumeTypeBind,
Source: definedSecret.File,
Target: target,
ReadOnly: true,
})
if err != nil {
return nil, err
}
mounts[target] = mnt
}
values := make([]mount.Mount, 0, len(mounts))
for _, v := range mounts {
values = append(values, v)
}
return values, nil
}
func isAbsTarget(p string) bool {
return isUnixAbs(p) || isWindowsAbs(p)
}
func isUnixAbs(p string) bool {
return strings.HasPrefix(p, "/")
}
func isWindowsAbs(p string) bool {
if strings.HasPrefix(p, "\\\\") {
return true
}
if len(p) > 2 && p[1] == ':' {
return p[2] == '\\'
}
return false
}
func buildMount(project types.Project, volume types.ServiceVolumeConfig) (mount.Mount, error) {
source := volume.Source
// on windows, filepath.IsAbs(source) is false for unix style abs path like /var/run/docker.sock.
// do not replace these with filepath.Abs(source) that will include a default drive.
if volume.Type == types.VolumeTypeBind && !filepath.IsAbs(source) && !strings.HasPrefix(source, "/") {
// volume source has already been prefixed with workdir if required, by compose-go project loader
var err error
source, err = filepath.Abs(source)
if err != nil {
return mount.Mount{}, err
}
}
if volume.Type == types.VolumeTypeVolume {
if volume.Source != "" {
pVolume, ok := project.Volumes[volume.Source]
if ok {
source = pVolume.Name
}
}
}
bind, vol, tmpfs := buildMountOptions(project, volume)
volume.Target = path.Clean(volume.Target)
if bind != nil {
volume.Type = types.VolumeTypeBind
}
return mount.Mount{
Type: mount.Type(volume.Type),
Source: source,
Target: volume.Target,
ReadOnly: volume.ReadOnly,
Consistency: mount.Consistency(volume.Consistency),
BindOptions: bind,
VolumeOptions: vol,
TmpfsOptions: tmpfs,
}, nil
}
func buildMountOptions(project types.Project, volume types.ServiceVolumeConfig) (*mount.BindOptions, *mount.VolumeOptions, *mount.TmpfsOptions) {
switch volume.Type {
case "bind":
if volume.Volume != nil {
logrus.Warnf("mount of type `bind` should not define `volume` option")
}
if volume.Tmpfs != nil {
logrus.Warnf("mount of type `bind` should not define `tmpfs` option")
}
return buildBindOption(volume.Bind), nil, nil
case "volume":
if volume.Bind != nil {
logrus.Warnf("mount of type `volume` should not define `bind` option")
}
if volume.Tmpfs != nil {
logrus.Warnf("mount of type `volume` should not define `tmpfs` option")
}
if v, ok := project.Volumes[volume.Source]; ok && v.DriverOpts["o"] == types.VolumeTypeBind {
return buildBindOption(&types.ServiceVolumeBind{
CreateHostPath: true,
}), nil, nil
}
return nil, buildVolumeOptions(volume.Volume), nil
case "tmpfs":
if volume.Bind != nil {
logrus.Warnf("mount of type `tmpfs` should not define `bind` option")
}
if volume.Volume != nil {
logrus.Warnf("mount of type `tmpfs` should not define `volume` option")
}
return nil, nil, buildTmpfsOptions(volume.Tmpfs)
}
return nil, nil, nil
}
func buildBindOption(bind *types.ServiceVolumeBind) *mount.BindOptions {
if bind == nil {
return nil
}
return &mount.BindOptions{
Propagation: mount.Propagation(bind.Propagation),
// NonRecursive: false, FIXME missing from model ?
}
}
func buildVolumeOptions(vol *types.ServiceVolumeVolume) *mount.VolumeOptions {
if vol == nil {
return nil
}
return &mount.VolumeOptions{
NoCopy: vol.NoCopy,
// Labels: , // FIXME missing from model ?
// DriverConfig: , // FIXME missing from model ?
}
}
func buildTmpfsOptions(tmpfs *types.ServiceVolumeTmpfs) *mount.TmpfsOptions {
if tmpfs == nil {
return nil
}
return &mount.TmpfsOptions{
SizeBytes: int64(tmpfs.Size),
Mode: os.FileMode(tmpfs.Mode),
}
}
func (s *composeService) ensureNetwork(ctx context.Context, n *types.NetworkConfig) error {
if n.External {
return s.resolveExternalNetwork(ctx, n)
}
err := s.resolveOrCreateNetwork(ctx, n)
if errdefs.IsConflict(err) {
// Maybe another execution of `docker compose up|run` created same network
// let's retry once
return s.resolveOrCreateNetwork(ctx, n)
}
return err
}
func (s *composeService) resolveOrCreateNetwork(ctx context.Context, n *types.NetworkConfig) error { //nolint:gocyclo
expectedNetworkLabel := n.Labels[api.NetworkLabel]
expectedProjectLabel := n.Labels[api.ProjectLabel]
// First, try to find a unique network matching by name or ID
inspect, err := s.apiClient().NetworkInspect(ctx, n.Name, moby.NetworkInspectOptions{})
if err == nil {
// NetworkInspect will match on ID prefix, so double check we get the expected one
// as looking for network named `db` we could erroneously matched network ID `db9086999caf`
if inspect.Name == n.Name || inspect.ID == n.Name {
p, ok := inspect.Labels[api.ProjectLabel]
if !ok {
logrus.Warnf("a network with name %s exists but was not created by compose.\n"+
"Set `external: true` to use an existing network", n.Name)
} else if p != expectedProjectLabel {
logrus.Warnf("a network with name %s exists but was not created for project %q.\n"+
"Set `external: true` to use an existing network", n.Name, expectedProjectLabel)
}
if inspect.Labels[api.NetworkLabel] != expectedNetworkLabel {
return fmt.Errorf("network %s was found but has incorrect label %s set to %q", n.Name, api.NetworkLabel, inspect.Labels[api.NetworkLabel])
}
return nil
}
}
// ignore other errors. Typically, an ambiguous request by name results in some generic `invalidParameter` error
// Either not found, or name is ambiguous - use NetworkList to list by name
networks, err := s.apiClient().NetworkList(ctx, moby.NetworkListOptions{
Filters: filters.NewArgs(filters.Arg("name", n.Name)),
})
if err != nil {
return err
}
// NetworkList Matches all or part of a network name, so we have to filter for a strict match
networks = utils.Filter(networks, func(net moby.NetworkResource) bool {
return net.Name == n.Name
})
for _, net := range networks {
if net.Labels[api.ProjectLabel] == expectedProjectLabel &&
net.Labels[api.NetworkLabel] == expectedNetworkLabel {
return nil
}
}
// we could have set NetworkList with a projectFilter and networkFilter but not doing so allows to catch this
// scenario were a network with same name exists but doesn't have label, and use of `CheckDuplicate: true`
// prevents to create another one.
if len(networks) > 0 {
logrus.Warnf("a network with name %s exists but was not created by compose.\n"+
"Set `external: true` to use an existing network", n.Name)
return nil
}
var ipam *network.IPAM
if n.Ipam.Config != nil {
var config []network.IPAMConfig
for _, pool := range n.Ipam.Config {
config = append(config, network.IPAMConfig{
Subnet: pool.Subnet,
IPRange: pool.IPRange,
Gateway: pool.Gateway,
AuxAddress: pool.AuxiliaryAddresses,
})
}
ipam = &network.IPAM{
Driver: n.Ipam.Driver,
Config: config,
}
}
createOpts := moby.NetworkCreate{
CheckDuplicate: true,
Labels: n.Labels,
Driver: n.Driver,
Options: n.DriverOpts,
Internal: n.Internal,
Attachable: n.Attachable,
IPAM: ipam,
EnableIPv6: n.EnableIPv6,
}
if n.Ipam.Driver != "" || len(n.Ipam.Config) > 0 {
createOpts.IPAM = &network.IPAM{}
}
if n.Ipam.Driver != "" {
createOpts.IPAM.Driver = n.Ipam.Driver
}
for _, ipamConfig := range n.Ipam.Config {
config := network.IPAMConfig{
Subnet: ipamConfig.Subnet,
IPRange: ipamConfig.IPRange,
Gateway: ipamConfig.Gateway,
AuxAddress: ipamConfig.AuxiliaryAddresses,
}
createOpts.IPAM.Config = append(createOpts.IPAM.Config, config)
}
networkEventName := fmt.Sprintf("Network %s", n.Name)
w := progress.ContextWriter(ctx)
w.Event(progress.CreatingEvent(networkEventName))
_, err = s.apiClient().NetworkCreate(ctx, n.Name, createOpts)
if err != nil {
w.Event(progress.ErrorEvent(networkEventName))
return fmt.Errorf("failed to create network %s: %w", n.Name, err)
}
w.Event(progress.CreatedEvent(networkEventName))
return nil
}
func (s *composeService) resolveExternalNetwork(ctx context.Context, n *types.NetworkConfig) error {
// NetworkInspect will match on ID prefix, so NetworkList with a name
// filter is used to look for an exact match to prevent e.g. a network
// named `db` from getting erroneously matched to a network with an ID
// like `db9086999caf`
networks, err := s.apiClient().NetworkList(ctx, moby.NetworkListOptions{
Filters: filters.NewArgs(filters.Arg("name", n.Name)),
})
if err != nil {
return err
}
if len(networks) == 0 {
// in this instance, n.Name is really an ID
sn, err := s.apiClient().NetworkInspect(ctx, n.Name, moby.NetworkInspectOptions{})
if err != nil {
return err
}
networks = append(networks, sn)
}
// NetworkList API doesn't return the exact name match, so we can retrieve more than one network with a request
networks = utils.Filter(networks, func(net moby.NetworkResource) bool {
// later in this function, the name is changed the to ID.
// this function is called during the rebuild stage of `compose watch`.
// we still require just one network back, but we need to run the search on the ID
return net.Name == n.Name || net.ID == n.Name
})
switch len(networks) {
case 1:
n.Name = networks[0].ID
return nil
case 0:
if n.Driver == "overlay" {
// Swarm nodes do not register overlay networks that were
// created on a different node unless they're in use.
// Here we assume `driver` is relevant for a network we don't manage
// which is a non-sense, but this is our legacy ¯\(ツ)/¯
// networkAttach will later fail anyway if network actually doesn't exists
enabled, err := s.isSWarmEnabled(ctx)
if err != nil {
return err
}
if enabled {
return nil
}
}
return fmt.Errorf("network %s declared as external, but could not be found", n.Name)
default:
return fmt.Errorf("multiple networks with name %q were found. Use network ID as `name` to avoid ambiguity", n.Name)
}
}
func (s *composeService) ensureVolume(ctx context.Context, volume types.VolumeConfig, project string) error {
inspected, err := s.apiClient().VolumeInspect(ctx, volume.Name)
if err != nil {
if !errdefs.IsNotFound(err) {
return err
}
if volume.External {
return fmt.Errorf("external volume %q not found", volume.Name)
}
err := s.createVolume(ctx, volume)
return err
}
if volume.External {
return nil
}
// Volume exists with name, but let's double-check this is the expected one
p, ok := inspected.Labels[api.ProjectLabel]
if !ok {
logrus.Warnf("volume %q already exists but was not created by Docker Compose. Use `external: true` to use an existing volume", volume.Name)
}
if ok && p != project {
logrus.Warnf("volume %q already exists but was created for project %q (expected %q). Use `external: true` to use an existing volume", volume.Name, p, project)
}
return nil
}
func (s *composeService) createVolume(ctx context.Context, volume types.VolumeConfig) error {
eventName := fmt.Sprintf("Volume %q", volume.Name)
w := progress.ContextWriter(ctx)
w.Event(progress.CreatingEvent(eventName))
_, err := s.apiClient().VolumeCreate(ctx, volume_api.CreateOptions{
Labels: volume.Labels,
Name: volume.Name,
Driver: volume.Driver,
DriverOpts: volume.DriverOpts,
})
if err != nil {
w.Event(progress.ErrorEvent(eventName))
return err
}
w.Event(progress.CreatedEvent(eventName))
return nil
}