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// Copyright 2016 go-dockerclient authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package docker
import (
"context"
"encoding/json"
"io"
"net/http"
"time"
"github.com/docker/docker/api/types/swarm"
)
// NoSuchService is the error returned when a given service does not exist.
type NoSuchService struct {
ID string
Err error
}
func (err *NoSuchService) Error() string {
if err.Err != nil {
return err.Err.Error()
}
return "No such service: " + err.ID
}
// CreateServiceOptions specify parameters to the CreateService function.
//
// See https://goo.gl/KrVjHz for more details.
type CreateServiceOptions struct {
Auth AuthConfiguration `qs:"-"`
swarm.ServiceSpec
Context context.Context
}
// CreateService creates a new service, returning the service instance
// or an error in case of failure.
//
// See https://goo.gl/KrVjHz for more details.
func (c *Client) CreateService(opts CreateServiceOptions) (*swarm.Service, error) {
headers, err := headersWithAuth(opts.Auth)
if err != nil {
return nil, err
}
path := "/services/create?" + queryString(opts)
resp, err := c.do(http.MethodPost, path, doOptions{
headers: headers,
data: opts.ServiceSpec,
forceJSON: true,
context: opts.Context,
})
if err != nil {
return nil, err
}
defer resp.Body.Close()
var service swarm.Service
if err := json.NewDecoder(resp.Body).Decode(&service); err != nil {
return nil, err
}
return &service, nil
}
// RemoveServiceOptions encapsulates options to remove a service.
//
// See https://goo.gl/Tqrtya for more details.
type RemoveServiceOptions struct {
ID string `qs:"-"`
Context context.Context
}
// RemoveService removes a service, returning an error in case of failure.
//
// See https://goo.gl/Tqrtya for more details.
func (c *Client) RemoveService(opts RemoveServiceOptions) error {
path := "/services/" + opts.ID
resp, err := c.do(http.MethodDelete, path, doOptions{context: opts.Context})
if err != nil {
if e, ok := err.(*Error); ok && e.Status == http.StatusNotFound {
return &NoSuchService{ID: opts.ID}
}
return err
}
resp.Body.Close()
return nil
}
// UpdateServiceOptions specify parameters to the UpdateService function.
//
// See https://goo.gl/wu3MmS for more details.
type UpdateServiceOptions struct {
Auth AuthConfiguration `qs:"-"`
swarm.ServiceSpec `qs:"-"`
Context context.Context
Version uint64
Rollback string
}
// UpdateService updates the service at ID with the options
//
// See https://goo.gl/wu3MmS for more details.
func (c *Client) UpdateService(id string, opts UpdateServiceOptions) error {
headers, err := headersWithAuth(opts.Auth)
if err != nil {
return err
}
resp, err := c.do(http.MethodPost, "/services/"+id+"/update?"+queryString(opts), doOptions{
headers: headers,
data: opts.ServiceSpec,
forceJSON: true,
context: opts.Context,
})
if err != nil {
if e, ok := err.(*Error); ok && e.Status == http.StatusNotFound {
return &NoSuchService{ID: id}
}
return err
}
defer resp.Body.Close()
return nil
}
// InspectService returns information about a service by its ID.
//
// See https://goo.gl/dHmr75 for more details.
func (c *Client) InspectService(id string) (*swarm.Service, error) {
path := "/services/" + id
resp, err := c.do(http.MethodGet, path, doOptions{})
if err != nil {
if e, ok := err.(*Error); ok && e.Status == http.StatusNotFound {
return nil, &NoSuchService{ID: id}
}
return nil, err
}
defer resp.Body.Close()
var service swarm.Service
if err := json.NewDecoder(resp.Body).Decode(&service); err != nil {
return nil, err
}
return &service, nil
}
// ListServicesOptions specify parameters to the ListServices function.
//
// See https://goo.gl/DwvNMd for more details.
type ListServicesOptions struct {
Filters map[string][]string
Status bool
Context context.Context
}
// ListServices returns a slice of services matching the given criteria.
//
// See https://goo.gl/DwvNMd for more details.
func (c *Client) ListServices(opts ListServicesOptions) ([]swarm.Service, error) {
path := "/services?" + queryString(opts)
resp, err := c.do(http.MethodGet, path, doOptions{context: opts.Context})
if err != nil {
return nil, err
}
defer resp.Body.Close()
var services []swarm.Service
if err := json.NewDecoder(resp.Body).Decode(&services); err != nil {
return nil, err
}
return services, nil
}
// LogsServiceOptions represents the set of options used when getting logs from a
// service.
type LogsServiceOptions struct {
Context context.Context
Service string `qs:"-"`
OutputStream io.Writer `qs:"-"`
ErrorStream io.Writer `qs:"-"`
InactivityTimeout time.Duration `qs:"-"`
Tail string
Since int64
// Use raw terminal? Usually true when the container contains a TTY.
RawTerminal bool `qs:"-"`
Follow bool
Stdout bool
Stderr bool
Timestamps bool
Details bool
}
// GetServiceLogs gets stdout and stderr logs from the specified service.
//
// When LogsServiceOptions.RawTerminal is set to false, go-dockerclient will multiplex
// the streams and send the containers stdout to LogsServiceOptions.OutputStream, and
// stderr to LogsServiceOptions.ErrorStream.
//
// When LogsServiceOptions.RawTerminal is true, callers will get the raw stream on
// LogsServiceOptions.OutputStream.
func (c *Client) GetServiceLogs(opts LogsServiceOptions) error {
if opts.Service == "" {
return &NoSuchService{ID: opts.Service}
}
if opts.Tail == "" {
opts.Tail = "all"
}
path := "/services/" + opts.Service + "/logs?" + queryString(opts)
return c.stream(http.MethodGet, path, streamOptions{
setRawTerminal: opts.RawTerminal,
stdout: opts.OutputStream,
stderr: opts.ErrorStream,
inactivityTimeout: opts.InactivityTimeout,
context: opts.Context,
})
}
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