docker

package
v0.1.0 Latest Latest
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 Go to latest Published: Feb 2, 2016 License: Apache-2.0 Imports: 27 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	NAME    = Label("io.docker.compose.name")
	PROJECT = Label("io.docker.compose.project")
	SERVICE = Label("io.docker.compose.service")
	HASH    = Label("io.docker.compose.config-hash")
)

Libcompose default labels.

View Source 
const (
	// DefaultAPIVersion is the default docker API version set by libcompose
	DefaultAPIVersion = "1.20"
)
View Source 
const DefaultDockerfileName = "Dockerfile"

DefaultDockerfileName is the default name of a Dockerfile

View Source 
const DefaultTag = "latest"

DefaultTag is the name of the default tag of an image.

Variables

This section is empty.

Functions

func And 

func And(left, right map[string][]string) map[string][]string

And returns a map of labels by merging the two specified values (left and right).

func AndString 

func AndString(left, right string) string

AndString returns a json list of labels by merging the two specified values (left and right) serialized as string.

func Convert 

func Convert(c *project.ServiceConfig, ctx *Context) (*dockerclient.Config, *dockerclient.HostConfig, error)

Convert converts a service configuration to an docker API structures (Config and HostConfig)

func ConvertToAPI 

func ConvertToAPI(s *Service, name string) (*dockerclient.CreateContainerOptions, error)

ConvertToAPI converts a service configuration to a docker API container configuration.

func CreateClient 

func CreateClient(c ClientOpts) (*dockerclient.Client, error)

CreateClient creates a docker client based on the specified options.

func CreateTar 

func CreateTar(p *project.Project, name string) (io.ReadCloser, error)

CreateTar create a build context tar for the specified project and service name.

func Filter 

func Filter(vs []string, f func(string) bool) []string

Filter filters the specified string slice with the specified function.

func GetContainerByID 

func GetContainerByID(client *dockerclient.Client, id string) (*dockerclient.APIContainers, error)

GetContainerByID looks up the hosts containers with the specified Id and returns it, or an error.

func GetContainerByName 

func GetContainerByName(client *dockerclient.Client, name string) (*dockerclient.APIContainers, error)

GetContainerByName looks up the hosts containers with the specified name and returns it, or an error.

func GetContainersByFilter 

func GetContainersByFilter(client *dockerclient.Client, filters ...map[string][]string) ([]dockerclient.APIContainers, error)

GetContainersByFilter looks up the hosts containers with the specified filters and returns a list of container matching it, or an error.

func NewProject 

func NewProject(context *Context) (*project.Project, error)

NewProject creates a Project with the specified context.

Types

type Builder 

type Builder interface {
	Build(imageName string, p *project.Project, service project.Service) error
}

Builder defines methods to provide a docker builder. This makes libcompose not tied up to the docker daemon builder.

type ClientFactory 

type ClientFactory interface {
	// Create constructs a Docker client for the given service. The passed in
	// config may be nil in which case a generic client for the project should
	// be returned.
	Create(service project.Service) *dockerclient.Client
}

ClientFactory is a factory to create docker clients.

func NewDefaultClientFactory 

func NewDefaultClientFactory(opts ClientOpts) (ClientFactory, error)

NewDefaultClientFactory creates and returns the default client factory that uses github.com/samalba/dockerclient.

type ClientOpts 

type ClientOpts struct {
	TLS        bool
	TLSVerify  bool
	TLSOptions tlsconfig.Options
	TrustKey   string
	Host       string
	APIVersion string
}

ClientOpts holds docker client options (host, tls, ..)

type Container 

type Container struct {
	project.EmptyService
	// contains filtered or unexported fields
}

Container holds information about a docker container and the service it is tied on. It implements Service interface by encapsulating a EmptyService.

func NewContainer 

func NewContainer(client *dockerclient.Client, name string, service *Service) *Container

NewContainer creates a container struct with the specified docker client, name and service.

func (*Container) Create 

func (c *Container) Create(imageName string) (*dockerclient.APIContainers, error)

Create creates the container based on the specified image name and send an event to notify the container has been created. If the container already exists, does nothing.

func (*Container) Delete 

func (c *Container) Delete() error

Delete removes the container if existing. If the container is running, it tries to stop it first.

func (*Container) Down 

func (c *Container) Down() error

Down stops the container.

func (*Container) ID 

func (c *Container) ID() (string, error)

ID returns the container Id.

func (*Container) Info 

func (c *Container) Info(qFlag bool) (project.Info, error)

Info returns info about the container, like name, command, state or ports.

func (*Container) IsRunning 

func (c *Container) IsRunning() (bool, error)

IsRunning returns the running state of the container.

func (*Container) Kill 

func (c *Container) Kill() error

Kill kill the container.

func (*Container) Log 

func (c *Container) Log() error

Log forwards container logs to the project configured logger.

func (*Container) Name 

func (c *Container) Name() string

Name returns the container name.

func (*Container) OutOfSync 

func (c *Container) OutOfSync(imageName string) (bool, error)

OutOfSync checks if the container is out of sync with the service definition. It looks if the the service hash container label is the same as the computed one.

func (*Container) Pause 

func (c *Container) Pause() error

Pause pauses the container. If the containers are already paused, don't fail.

func (*Container) Port 

func (c *Container) Port(port string) (string, error)

Port returns the host port the specified port is mapped on.

func (*Container) Pull 

func (c *Container) Pull() error

Pull pulls the image the container is based on.

func (*Container) Recreate 

func (c *Container) Recreate(imageName string) (*dockerclient.APIContainers, error)

Recreate will not refresh the container by means of relaxation and enjoyment, just delete it and create a new one with the current configuration

func (*Container) Restart 

func (c *Container) Restart() error

Restart restarts the container if existing, does nothing otherwise.

func (*Container) Unpause 

func (c *Container) Unpause() error

Unpause unpauses the container. If the containers are not paused, don't fail.

func (*Container) Up 

func (c *Container) Up(imageName string) error

Up creates and start the container based on the image name and send an event to notify the container has been created. If the container exists but is stopped it tries to start it.

type Context 

type Context struct {
	project.Context
	Builder       Builder
	ClientFactory ClientFactory
	ConfigDir     string
	ConfigFile    *cliconfig.ConfigFile
}

Context holds context meta information about a libcompose project and docker client information (like configuration file, builder to use, …)

func (*Context) LookupConfig 

func (c *Context) LookupConfig() error

LookupConfig tries to load the docker configuration files, if any.

type DaemonBuilder 

type DaemonBuilder struct {
	// contains filtered or unexported fields
}

DaemonBuilder is the daemon "docker build" Builder implementation.

func NewDaemonBuilder 

func NewDaemonBuilder(context *Context) *DaemonBuilder

NewDaemonBuilder creates a DaemonBuilder based on the specified context.

func (*DaemonBuilder) Build 

func (d *DaemonBuilder) Build(imageName string, p *project.Project, service project.Service) error

Build implements Builder. It consumes the docker build API endpoint and sends a tar of the specified service build context.

type Label 

type Label string

Label represents a docker label.

func (Label) Eq 

func (f Label) Eq(value string) map[string][]string

Eq returns a label map representation with the specified value.

func (Label) EqString 

func (f Label) EqString(value string) string

EqString returns a label json string representation with the specified value.

func (Label) Str 

func (f Label) Str() string

Str returns the label name.

type Namer 

type Namer interface {
	io.Closer
	Next() string
}

Namer defines method to provide container name.

func NewNamer 

func NewNamer(client *dockerclient.Client, project, service string) Namer

NewNamer returns a namer that returns names based on the specified project and service name and an inner counter, e.g. project_service_1, project_service_2…

func NewSingleNamer 

func NewSingleNamer(name string) Namer

NewSingleNamer returns a namer that only allows a single name.

type Service 

type Service struct {
	// contains filtered or unexported fields
}

Service is a project.Service implementations.

func NewService 

func NewService(name string, serviceConfig *project.ServiceConfig, context *Context) *Service

NewService creates a service

func (*Service) Build 

func (s *Service) Build() error

Build implements Service.Build. If an imageName is specified or if the context has no build to work with it will do nothing. Otherwise it will try to build the image and returns an error if any.

func (*Service) Config 

func (s *Service) Config() *project.ServiceConfig

Config returns the configuration of the service (project.ServiceConfig).

func (*Service) Containers 

func (s *Service) Containers() ([]project.Container, error)

Containers implements Service.Containers. It returns the list of containers that are related to the service.

func (*Service) Create 

func (s *Service) Create() error

Create implements Service.Create. It ensures the image exists or build it if it can and then create a container.

func (*Service) Delete 

func (s *Service) Delete() error

Delete implements Service.Delete. It removes any containers related to the service.

func (*Service) DependentServices 

func (s *Service) DependentServices() []project.ServiceRelationship

DependentServices returns the dependent services (as an array of ServiceRelationship) of the service.

func (*Service) Down 

func (s *Service) Down() error

Down implements Service.Down. It stops any containers related to the service.

func (*Service) Info 

func (s *Service) Info(qFlag bool) (project.InfoSet, error)

Info implements Service.Info. It returns an project.InfoSet with the containers related to this service (can be multiple if using the scale command).

func (*Service) Kill 

func (s *Service) Kill() error

Kill implements Service.Kill. It kills any containers related to the service.

func (*Service) Log 

func (s *Service) Log() error

Log implements Service.Log. It returns the docker logs for each container related to the service.

func (*Service) Name 

func (s *Service) Name() string

Name returns the service name.

func (*Service) Pause 

func (s *Service) Pause() error

Pause implements Service.Pause. It puts into pause the container(s) related to the service.

func (*Service) Pull 

func (s *Service) Pull() error

Pull implements Service.Pull. It pulls the image of the service and skip the service that would need to be built.

func (*Service) Restart 

func (s *Service) Restart() error

Restart implements Service.Restart. It restarts any containers related to the service.

func (*Service) Scale 

func (s *Service) Scale(scale int) error

Scale implements Service.Scale. It creates or removes containers to have the specified number of related container to the service to run.

func (*Service) Start 

func (s *Service) Start() error

Start implements Service.Start. It tries to start a container without creating it.

func (*Service) Unpause 

func (s *Service) Unpause() error

Unpause implements Service.Pause. It brings back from pause the container(s) related to the service.

func (*Service) Up 

func (s *Service) Up() error

Up implements Service.Up. It builds the image if needed, creates a container and start it.

type ServiceFactory 

type ServiceFactory struct {
	// contains filtered or unexported fields
}

ServiceFactory is an implementation of project.ServiceFactory.

func (*ServiceFactory) Create 

func (s *ServiceFactory) Create(project *project.Project, name string, serviceConfig *project.ServiceConfig) (project.Service, error)

Create creates a Service based on the specified project, name and service configuration.

Source Files

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