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moby--moby/integration-cli/daemon/daemon_swarm.go

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package daemon
import (
"encoding/json"
"fmt"
"net/http"
"strings"
"time"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/filters"
"github.com/docker/docker/api/types/swarm"
"github.com/docker/docker/integration-cli/checker"
"github.com/go-check/check"
"github.com/pkg/errors"
)
// Swarm is a test daemon with helpers for participating in a swarm.
type Swarm struct {
*Daemon
swarm.Info
Port int
ListenAddr string
}
// Init initializes a new swarm cluster.
func (d *Swarm) Init(req swarm.InitRequest) error {
if req.ListenAddr == "" {
req.ListenAddr = d.ListenAddr
}
status, out, err := d.SockRequest("POST", "/swarm/init", req)
if status != http.StatusOK {
return fmt.Errorf("initializing swarm: invalid statuscode %v, %q", status, out)
}
if err != nil {
return fmt.Errorf("initializing swarm: %v", err)
}
info, err := d.SwarmInfo()
if err != nil {
return err
}
d.Info = info
return nil
}
// Join joins a daemon to an existing cluster.
func (d *Swarm) Join(req swarm.JoinRequest) error {
if req.ListenAddr == "" {
req.ListenAddr = d.ListenAddr
}
status, out, err := d.SockRequest("POST", "/swarm/join", req)
if status != http.StatusOK {
return fmt.Errorf("joining swarm: invalid statuscode %v, %q", status, out)
}
if err != nil {
return fmt.Errorf("joining swarm: %v", err)
}
info, err := d.SwarmInfo()
if err != nil {
return err
}
d.Info = info
return nil
}
// Leave forces daemon to leave current cluster.
func (d *Swarm) Leave(force bool) error {
url := "/swarm/leave"
if force {
url += "?force=1"
}
status, out, err := d.SockRequest("POST", url, nil)
if status != http.StatusOK {
return fmt.Errorf("leaving swarm: invalid statuscode %v, %q", status, out)
}
if err != nil {
err = fmt.Errorf("leaving swarm: %v", err)
}
return err
}
// SwarmInfo returns the swarm information of the daemon
func (d *Swarm) SwarmInfo() (swarm.Info, error) {
var info struct {
Swarm swarm.Info
}
status, dt, err := d.SockRequest("GET", "/info", nil)
if status != http.StatusOK {
return info.Swarm, fmt.Errorf("get swarm info: invalid statuscode %v", status)
}
if err != nil {
return info.Swarm, fmt.Errorf("get swarm info: %v", err)
}
if err := json.Unmarshal(dt, &info); err != nil {
return info.Swarm, err
}
return info.Swarm, nil
}
// Unlock tries to unlock a locked swarm
func (d *Swarm) Unlock(req swarm.UnlockRequest) error {
status, out, err := d.SockRequest("POST", "/swarm/unlock", req)
if status != http.StatusOK {
return fmt.Errorf("unlocking swarm: invalid statuscode %v, %q", status, out)
}
if err != nil {
err = errors.Wrap(err, "unlocking swarm")
}
return err
}
// ServiceConstructor defines a swarm service constructor function
type ServiceConstructor func(*swarm.Service)
// NodeConstructor defines a swarm node constructor
type NodeConstructor func(*swarm.Node)
// SpecConstructor defines a swarm spec constructor
type SpecConstructor func(*swarm.Spec)
// CreateService creates a swarm service given the specified service constructor
func (d *Swarm) CreateService(c *check.C, f ...ServiceConstructor) string {
var service swarm.Service
for _, fn := range f {
fn(&service)
}
status, out, err := d.SockRequest("POST", "/services/create", service.Spec)
c.Assert(err, checker.IsNil, check.Commentf(string(out)))
c.Assert(status, checker.Equals, http.StatusCreated, check.Commentf("output: %q", string(out)))
var scr types.ServiceCreateResponse
c.Assert(json.Unmarshal(out, &scr), checker.IsNil)
return scr.ID
}
// GetService returns the swarm service corresponding to the specified id
func (d *Swarm) GetService(c *check.C, id string) *swarm.Service {
var service swarm.Service
status, out, err := d.SockRequest("GET", "/services/"+id, nil)
c.Assert(err, checker.IsNil, check.Commentf(string(out)))
c.Assert(status, checker.Equals, http.StatusOK, check.Commentf("output: %q", string(out)))
c.Assert(json.Unmarshal(out, &service), checker.IsNil)
return &service
}
// GetServiceTasks returns the swarm tasks for the specified service
func (d *Swarm) GetServiceTasks(c *check.C, service string) []swarm.Task {
var tasks []swarm.Task
filterArgs := filters.NewArgs()
filterArgs.Add("desired-state", "running")
filterArgs.Add("service", service)
filters, err := filters.ToParam(filterArgs)
c.Assert(err, checker.IsNil)
status, out, err := d.SockRequest("GET", "/tasks?filters="+filters, nil)
c.Assert(err, checker.IsNil, check.Commentf(string(out)))
c.Assert(status, checker.Equals, http.StatusOK, check.Commentf("output: %q", string(out)))
c.Assert(json.Unmarshal(out, &tasks), checker.IsNil)
return tasks
}
// CheckServiceTasksInState returns the number of tasks with a matching state,
// and optional message substring.
func (d *Swarm) CheckServiceTasksInState(service string, state swarm.TaskState, message string) func(*check.C) (interface{}, check.CommentInterface) {
return func(c *check.C) (interface{}, check.CommentInterface) {
tasks := d.GetServiceTasks(c, service)
var count int
for _, task := range tasks {
if task.Status.State == state {
if message == "" || strings.Contains(task.Status.Message, message) {
count++
}
}
}
return count, nil
}
}
// CheckServiceRunningTasks returns the number of running tasks for the specified service
func (d *Swarm) CheckServiceRunningTasks(service string) func(*check.C) (interface{}, check.CommentInterface) {
return d.CheckServiceTasksInState(service, swarm.TaskStateRunning, "")
}
// CheckServiceUpdateState returns the current update state for the specified service
func (d *Swarm) CheckServiceUpdateState(service string) func(*check.C) (interface{}, check.CommentInterface) {
return func(c *check.C) (interface{}, check.CommentInterface) {
service := d.GetService(c, service)
if service.UpdateStatus == nil {
return "", nil
}
return service.UpdateStatus.State, nil
}
}
// CheckServiceTasks returns the number of tasks for the specified service
func (d *Swarm) CheckServiceTasks(service string) func(*check.C) (interface{}, check.CommentInterface) {
return func(c *check.C) (interface{}, check.CommentInterface) {
tasks := d.GetServiceTasks(c, service)
return len(tasks), nil
}
}
// CheckRunningTaskImages returns the number of different images attached to a running task
func (d *Swarm) CheckRunningTaskImages(c *check.C) (interface{}, check.CommentInterface) {
var tasks []swarm.Task
filterArgs := filters.NewArgs()
filterArgs.Add("desired-state", "running")
filters, err := filters.ToParam(filterArgs)
c.Assert(err, checker.IsNil)
status, out, err := d.SockRequest("GET", "/tasks?filters="+filters, nil)
c.Assert(err, checker.IsNil, check.Commentf(string(out)))
c.Assert(status, checker.Equals, http.StatusOK, check.Commentf("output: %q", string(out)))
c.Assert(json.Unmarshal(out, &tasks), checker.IsNil)
result := make(map[string]int)
for _, task := range tasks {
if task.Status.State == swarm.TaskStateRunning {
result[task.Spec.ContainerSpec.Image]++
}
}
return result, nil
}
// CheckNodeReadyCount returns the number of ready node on the swarm
func (d *Swarm) CheckNodeReadyCount(c *check.C) (interface{}, check.CommentInterface) {
nodes := d.ListNodes(c)
var readyCount int
for _, node := range nodes {
if node.Status.State == swarm.NodeStateReady {
readyCount++
}
}
return readyCount, nil
}
// GetTask returns the swarm task identified by the specified id
func (d *Swarm) GetTask(c *check.C, id string) swarm.Task {
var task swarm.Task
status, out, err := d.SockRequest("GET", "/tasks/"+id, nil)
c.Assert(err, checker.IsNil, check.Commentf(string(out)))
c.Assert(status, checker.Equals, http.StatusOK, check.Commentf("output: %q", string(out)))
c.Assert(json.Unmarshal(out, &task), checker.IsNil)
return task
}
// UpdateService updates a swarm service with the specified service constructor
func (d *Swarm) UpdateService(c *check.C, service *swarm.Service, f ...ServiceConstructor) {
for _, fn := range f {
fn(service)
}
url := fmt.Sprintf("/services/%s/update?version=%d", service.ID, service.Version.Index)
status, out, err := d.SockRequest("POST", url, service.Spec)
c.Assert(err, checker.IsNil, check.Commentf(string(out)))
c.Assert(status, checker.Equals, http.StatusOK, check.Commentf("output: %q", string(out)))
}
// RemoveService removes the specified service
func (d *Swarm) RemoveService(c *check.C, id string) {
status, out, err := d.SockRequest("DELETE", "/services/"+id, nil)
c.Assert(err, checker.IsNil, check.Commentf(string(out)))
c.Assert(status, checker.Equals, http.StatusOK, check.Commentf("output: %q", string(out)))
}
// GetNode returns a swarm node identified by the specified id
func (d *Swarm) GetNode(c *check.C, id string) *swarm.Node {
var node swarm.Node
status, out, err := d.SockRequest("GET", "/nodes/"+id, nil)
c.Assert(err, checker.IsNil, check.Commentf(string(out)))
c.Assert(status, checker.Equals, http.StatusOK, check.Commentf("output: %q", string(out)))
c.Assert(json.Unmarshal(out, &node), checker.IsNil)
c.Assert(node.ID, checker.Equals, id)
return &node
}
// RemoveNode removes the specified node
func (d *Swarm) RemoveNode(c *check.C, id string, force bool) {
url := "/nodes/" + id
if force {
url += "?force=1"
}
status, out, err := d.SockRequest("DELETE", url, nil)
c.Assert(err, checker.IsNil, check.Commentf(string(out)))
c.Assert(status, checker.Equals, http.StatusOK, check.Commentf("output: %q", string(out)))
}
// UpdateNode updates a swarm node with the specified node constructor
func (d *Swarm) UpdateNode(c *check.C, id string, f ...NodeConstructor) {
for i := 0; ; i++ {
node := d.GetNode(c, id)
for _, fn := range f {
fn(node)
}
url := fmt.Sprintf("/nodes/%s/update?version=%d", node.ID, node.Version.Index)
status, out, err := d.SockRequest("POST", url, node.Spec)
if i < 10 && strings.Contains(string(out), "update out of sequence") {
time.Sleep(100 * time.Millisecond)
continue
}
c.Assert(err, checker.IsNil, check.Commentf(string(out)))
c.Assert(status, checker.Equals, http.StatusOK, check.Commentf("output: %q", string(out)))
return
}
}
// ListNodes returns the list of the current swarm nodes
func (d *Swarm) ListNodes(c *check.C) []swarm.Node {
status, out, err := d.SockRequest("GET", "/nodes", nil)
c.Assert(err, checker.IsNil, check.Commentf(string(out)))
c.Assert(status, checker.Equals, http.StatusOK, check.Commentf("output: %q", string(out)))
nodes := []swarm.Node{}
c.Assert(json.Unmarshal(out, &nodes), checker.IsNil)
return nodes
}
// ListServices return the list of the current swarm services
func (d *Swarm) ListServices(c *check.C) []swarm.Service {
status, out, err := d.SockRequest("GET", "/services", nil)
c.Assert(err, checker.IsNil, check.Commentf(string(out)))
c.Assert(status, checker.Equals, http.StatusOK, check.Commentf("output: %q", string(out)))
services := []swarm.Service{}
c.Assert(json.Unmarshal(out, &services), checker.IsNil)
return services
}
// CreateSecret creates a secret given the specified spec
func (d *Swarm) CreateSecret(c *check.C, secretSpec swarm.SecretSpec) string {
status, out, err := d.SockRequest("POST", "/secrets/create", secretSpec)
c.Assert(err, checker.IsNil, check.Commentf(string(out)))
c.Assert(status, checker.Equals, http.StatusCreated, check.Commentf("output: %q", string(out)))
var scr types.SecretCreateResponse
c.Assert(json.Unmarshal(out, &scr), checker.IsNil)
return scr.ID
}
// ListSecrets returns the list of the current swarm secrets
func (d *Swarm) ListSecrets(c *check.C) []swarm.Secret {
status, out, err := d.SockRequest("GET", "/secrets", nil)
c.Assert(err, checker.IsNil, check.Commentf(string(out)))
c.Assert(status, checker.Equals, http.StatusOK, check.Commentf("output: %q", string(out)))
secrets := []swarm.Secret{}
c.Assert(json.Unmarshal(out, &secrets), checker.IsNil)
return secrets
}
// GetSecret returns a swarm secret identified by the specified id
func (d *Swarm) GetSecret(c *check.C, id string) *swarm.Secret {
var secret swarm.Secret
status, out, err := d.SockRequest("GET", "/secrets/"+id, nil)
c.Assert(err, checker.IsNil, check.Commentf(string(out)))
c.Assert(status, checker.Equals, http.StatusOK, check.Commentf("output: %q", string(out)))
c.Assert(json.Unmarshal(out, &secret), checker.IsNil)
return &secret
}
// DeleteSecret removes the swarm secret identified by the specified id
func (d *Swarm) DeleteSecret(c *check.C, id string) {
status, out, err := d.SockRequest("DELETE", "/secrets/"+id, nil)
c.Assert(err, checker.IsNil, check.Commentf(string(out)))
c.Assert(status, checker.Equals, http.StatusNoContent, check.Commentf("output: %q", string(out)))
}
// GetSwarm return the current swarm object
func (d *Swarm) GetSwarm(c *check.C) swarm.Swarm {
var sw swarm.Swarm
status, out, err := d.SockRequest("GET", "/swarm", nil)
c.Assert(err, checker.IsNil, check.Commentf(string(out)))
c.Assert(status, checker.Equals, http.StatusOK, check.Commentf("output: %q", string(out)))
c.Assert(json.Unmarshal(out, &sw), checker.IsNil)
return sw
}
// UpdateSwarm updates the current swarm object with the specified spec constructors
func (d *Swarm) UpdateSwarm(c *check.C, f ...SpecConstructor) {
sw := d.GetSwarm(c)
for _, fn := range f {
fn(&sw.Spec)
}
url := fmt.Sprintf("/swarm/update?version=%d", sw.Version.Index)
status, out, err := d.SockRequest("POST", url, sw.Spec)
c.Assert(err, checker.IsNil, check.Commentf(string(out)))
c.Assert(status, checker.Equals, http.StatusOK, check.Commentf("output: %q", string(out)))
}
// RotateTokens update the swarm to rotate tokens
func (d *Swarm) RotateTokens(c *check.C) {
var sw swarm.Swarm
status, out, err := d.SockRequest("GET", "/swarm", nil)
c.Assert(err, checker.IsNil, check.Commentf(string(out)))
c.Assert(status, checker.Equals, http.StatusOK, check.Commentf("output: %q", string(out)))
c.Assert(json.Unmarshal(out, &sw), checker.IsNil)
url := fmt.Sprintf("/swarm/update?version=%d&rotateWorkerToken=true&rotateManagerToken=true", sw.Version.Index)
status, out, err = d.SockRequest("POST", url, sw.Spec)
c.Assert(err, checker.IsNil, check.Commentf(string(out)))
c.Assert(status, checker.Equals, http.StatusOK, check.Commentf("output: %q", string(out)))
}
// JoinTokens returns the current swarm join tokens
func (d *Swarm) JoinTokens(c *check.C) swarm.JoinTokens {
var sw swarm.Swarm
status, out, err := d.SockRequest("GET", "/swarm", nil)
c.Assert(err, checker.IsNil, check.Commentf(string(out)))
c.Assert(status, checker.Equals, http.StatusOK, check.Commentf("output: %q", string(out)))
c.Assert(json.Unmarshal(out, &sw), checker.IsNil)
return sw.JoinTokens
}
// CheckLocalNodeState returns the current swarm node state
func (d *Swarm) CheckLocalNodeState(c *check.C) (interface{}, check.CommentInterface) {
info, err := d.SwarmInfo()
c.Assert(err, checker.IsNil)
return info.LocalNodeState, nil
}
// CheckControlAvailable returns the current swarm control available
func (d *Swarm) CheckControlAvailable(c *check.C) (interface{}, check.CommentInterface) {
info, err := d.SwarmInfo()
c.Assert(err, checker.IsNil)
c.Assert(info.LocalNodeState, checker.Equals, swarm.LocalNodeStateActive)
return info.ControlAvailable, nil
}
// CheckLeader returns whether there is a leader on the swarm or not
func (d *Swarm) CheckLeader(c *check.C) (interface{}, check.CommentInterface) {
errList := check.Commentf("could not get node list")
status, out, err := d.SockRequest("GET", "/nodes", nil)
if err != nil {
return err, errList
}
if status != http.StatusOK {
return fmt.Errorf("expected http status OK, got: %d", status), errList
}
var ls []swarm.Node
if err := json.Unmarshal(out, &ls); err != nil {
return err, errList
}
for _, node := range ls {
if node.ManagerStatus != nil && node.ManagerStatus.Leader {
return nil, nil
}
}
return fmt.Errorf("no leader"), check.Commentf("could not find leader")
}
// CmdRetryOutOfSequence tries the specified command against the current daemon for 10 times
func (d *Swarm) CmdRetryOutOfSequence(args ...string) (string, error) {
for i := 0; ; i++ {
out, err := d.Cmd(args...)
if err != nil {
if strings.Contains(out, "update out of sequence") {
if i < 10 {
continue
}
}
}
return out, err
}
}