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service.go
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service.go
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package swarm
import (
"context"
"runtime"
"testing"
"time"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/filters"
swarmtypes "github.com/docker/docker/api/types/swarm"
"github.com/docker/docker/client"
"github.com/docker/docker/testutil/daemon"
"github.com/docker/docker/testutil/environment"
"gotest.tools/v3/assert"
"gotest.tools/v3/poll"
"gotest.tools/v3/skip"
)
// ServicePoll tweaks the pollSettings for `service`
func ServicePoll(config *poll.Settings) {
// Override the default pollSettings for `service` resource here ...
config.Timeout = 15 * time.Second
config.Delay = 100 * time.Millisecond
if runtime.GOARCH == "arm64" || runtime.GOARCH == "arm" {
config.Timeout = 90 * time.Second
}
}
// NetworkPoll tweaks the pollSettings for `network`
func NetworkPoll(config *poll.Settings) {
// Override the default pollSettings for `network` resource here ...
config.Timeout = 30 * time.Second
config.Delay = 100 * time.Millisecond
if runtime.GOARCH == "arm64" || runtime.GOARCH == "arm" {
config.Timeout = 50 * time.Second
}
}
// ContainerPoll tweaks the pollSettings for `container`
func ContainerPoll(config *poll.Settings) {
// Override the default pollSettings for `container` resource here ...
if runtime.GOARCH == "arm64" || runtime.GOARCH == "arm" {
config.Timeout = 30 * time.Second
config.Delay = 100 * time.Millisecond
}
}
// NewSwarm creates a swarm daemon for testing
func NewSwarm(t *testing.T, testEnv *environment.Execution, ops ...daemon.Option) *daemon.Daemon {
t.Helper()
skip.If(t, testEnv.IsRemoteDaemon)
skip.If(t, testEnv.DaemonInfo.OSType == "windows")
skip.If(t, testEnv.IsRootless, "rootless mode doesn't support Swarm-mode")
if testEnv.DaemonInfo.ExperimentalBuild {
ops = append(ops, daemon.WithExperimental())
}
d := daemon.New(t, ops...)
d.StartAndSwarmInit(t)
return d
}
// ServiceSpecOpt is used with `CreateService` to pass in service spec modifiers
type ServiceSpecOpt func(*swarmtypes.ServiceSpec)
// CreateService creates a service on the passed in swarm daemon.
func CreateService(t *testing.T, d *daemon.Daemon, opts ...ServiceSpecOpt) string {
t.Helper()
client := d.NewClientT(t)
defer client.Close()
spec := CreateServiceSpec(t, opts...)
resp, err := client.ServiceCreate(context.Background(), spec, types.ServiceCreateOptions{})
assert.NilError(t, err, "error creating service")
return resp.ID
}
// CreateServiceSpec creates a default service-spec, and applies the provided options
func CreateServiceSpec(t *testing.T, opts ...ServiceSpecOpt) swarmtypes.ServiceSpec {
t.Helper()
var spec swarmtypes.ServiceSpec
ServiceWithImage("busybox:latest")(&spec)
ServiceWithCommand([]string{"/bin/top"})(&spec)
ServiceWithReplicas(1)(&spec)
for _, o := range opts {
o(&spec)
}
return spec
}
// ServiceWithMode sets the mode of the service to the provided mode.
func ServiceWithMode(mode swarmtypes.ServiceMode) func(*swarmtypes.ServiceSpec) {
return func(spec *swarmtypes.ServiceSpec) {
spec.Mode = mode
}
}
// ServiceWithInit sets whether the service should use init or not
func ServiceWithInit(b *bool) func(*swarmtypes.ServiceSpec) {
return func(spec *swarmtypes.ServiceSpec) {
ensureContainerSpec(spec)
spec.TaskTemplate.ContainerSpec.Init = b
}
}
// ServiceWithImage sets the image to use for the service
func ServiceWithImage(image string) func(*swarmtypes.ServiceSpec) {
return func(spec *swarmtypes.ServiceSpec) {
ensureContainerSpec(spec)
spec.TaskTemplate.ContainerSpec.Image = image
}
}
// ServiceWithCommand sets the command to use for the service
func ServiceWithCommand(cmd []string) ServiceSpecOpt {
return func(spec *swarmtypes.ServiceSpec) {
ensureContainerSpec(spec)
spec.TaskTemplate.ContainerSpec.Command = cmd
}
}
// ServiceWithConfig adds the config reference to the service
func ServiceWithConfig(configRef *swarmtypes.ConfigReference) ServiceSpecOpt {
return func(spec *swarmtypes.ServiceSpec) {
ensureContainerSpec(spec)
spec.TaskTemplate.ContainerSpec.Configs = append(spec.TaskTemplate.ContainerSpec.Configs, configRef)
}
}
// ServiceWithSecret adds the secret reference to the service
func ServiceWithSecret(secretRef *swarmtypes.SecretReference) ServiceSpecOpt {
return func(spec *swarmtypes.ServiceSpec) {
ensureContainerSpec(spec)
spec.TaskTemplate.ContainerSpec.Secrets = append(spec.TaskTemplate.ContainerSpec.Secrets, secretRef)
}
}
// ServiceWithReplicas sets the replicas for the service
func ServiceWithReplicas(n uint64) ServiceSpecOpt {
return func(spec *swarmtypes.ServiceSpec) {
spec.Mode = swarmtypes.ServiceMode{
Replicated: &swarmtypes.ReplicatedService{
Replicas: &n,
},
}
}
}
// ServiceWithMaxReplicas sets the max replicas for the service
func ServiceWithMaxReplicas(n uint64) ServiceSpecOpt {
return func(spec *swarmtypes.ServiceSpec) {
ensurePlacement(spec)
spec.TaskTemplate.Placement.MaxReplicas = n
}
}
// ServiceWithName sets the name of the service
func ServiceWithName(name string) ServiceSpecOpt {
return func(spec *swarmtypes.ServiceSpec) {
spec.Annotations.Name = name
}
}
// ServiceWithNetwork sets the network of the service
func ServiceWithNetwork(network string) ServiceSpecOpt {
return func(spec *swarmtypes.ServiceSpec) {
spec.TaskTemplate.Networks = append(spec.TaskTemplate.Networks,
swarmtypes.NetworkAttachmentConfig{Target: network})
}
}
// ServiceWithEndpoint sets the Endpoint of the service
func ServiceWithEndpoint(endpoint *swarmtypes.EndpointSpec) ServiceSpecOpt {
return func(spec *swarmtypes.ServiceSpec) {
spec.EndpointSpec = endpoint
}
}
// ServiceWithSysctls sets the Sysctls option of the service's ContainerSpec.
func ServiceWithSysctls(sysctls map[string]string) ServiceSpecOpt {
return func(spec *swarmtypes.ServiceSpec) {
ensureContainerSpec(spec)
spec.TaskTemplate.ContainerSpec.Sysctls = sysctls
}
}
// ServiceWithCapabilities sets the Capabilities option of the service's ContainerSpec.
func ServiceWithCapabilities(add []string, drop []string) ServiceSpecOpt {
return func(spec *swarmtypes.ServiceSpec) {
ensureContainerSpec(spec)
spec.TaskTemplate.ContainerSpec.CapabilityAdd = add
spec.TaskTemplate.ContainerSpec.CapabilityDrop = drop
}
}
// ServiceWithPidsLimit sets the PidsLimit option of the service's Resources.Limits.
func ServiceWithPidsLimit(limit int64) ServiceSpecOpt {
return func(spec *swarmtypes.ServiceSpec) {
ensureResources(spec)
spec.TaskTemplate.Resources.Limits.Pids = limit
}
}
// GetRunningTasks gets the list of running tasks for a service
func GetRunningTasks(t *testing.T, c client.ServiceAPIClient, serviceID string) []swarmtypes.Task {
t.Helper()
tasks, err := c.TaskList(context.Background(), types.TaskListOptions{
Filters: filters.NewArgs(
filters.Arg("service", serviceID),
filters.Arg("desired-state", "running"),
),
})
assert.NilError(t, err)
return tasks
}
// ExecTask runs the passed in exec config on the given task
func ExecTask(t *testing.T, d *daemon.Daemon, task swarmtypes.Task, config types.ExecConfig) types.HijackedResponse {
t.Helper()
client := d.NewClientT(t)
defer client.Close()
ctx := context.Background()
resp, err := client.ContainerExecCreate(ctx, task.Status.ContainerStatus.ContainerID, config)
assert.NilError(t, err, "error creating exec")
startCheck := types.ExecStartCheck{}
attach, err := client.ContainerExecAttach(ctx, resp.ID, startCheck)
assert.NilError(t, err, "error attaching to exec")
return attach
}
func ensureResources(spec *swarmtypes.ServiceSpec) {
if spec.TaskTemplate.Resources == nil {
spec.TaskTemplate.Resources = &swarmtypes.ResourceRequirements{}
}
if spec.TaskTemplate.Resources.Limits == nil {
spec.TaskTemplate.Resources.Limits = &swarmtypes.Limit{}
}
if spec.TaskTemplate.Resources.Reservations == nil {
spec.TaskTemplate.Resources.Reservations = &swarmtypes.Resources{}
}
}
func ensureContainerSpec(spec *swarmtypes.ServiceSpec) {
if spec.TaskTemplate.ContainerSpec == nil {
spec.TaskTemplate.ContainerSpec = &swarmtypes.ContainerSpec{}
}
}
func ensurePlacement(spec *swarmtypes.ServiceSpec) {
if spec.TaskTemplate.Placement == nil {
spec.TaskTemplate.Placement = &swarmtypes.Placement{}
}
}