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dex/vendor/github.com/testcontainers/testcontainers-go/container.go

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2020-01-31 15:02:00 +05:30
package testcontainers
import (
"context"
"io"
"github.com/docker/docker/pkg/archive"
"github.com/docker/go-connections/nat"
"github.com/pkg/errors"
"github.com/testcontainers/testcontainers-go/wait"
)
// DeprecatedContainer shows methods that were supported before, but are now deprecated
// Deprecated: Use Container
type DeprecatedContainer interface {
GetHostEndpoint(ctx context.Context, port string) (string, string, error)
GetIPAddress(ctx context.Context) (string, error)
LivenessCheckPorts(ctx context.Context) (nat.PortSet, error)
Terminate(ctx context.Context) error
}
// ContainerProvider allows the creation of containers on an arbitrary system
type ContainerProvider interface {
CreateContainer(context.Context, ContainerRequest) (Container, error) // create a container without starting it
RunContainer(context.Context, ContainerRequest) (Container, error) // create a container and start it
}
// Container allows getting info about and controlling a single container instance
type Container interface {
GetContainerID() string // get the container id from the provider
Endpoint(context.Context, string) (string, error) // get proto://ip:port string for the first exposed port
PortEndpoint(context.Context, nat.Port, string) (string, error) // get proto://ip:port string for the given exposed port
Host(context.Context) (string, error) // get host where the container port is exposed
MappedPort(context.Context, nat.Port) (nat.Port, error) // get externally mapped port for a container port
Ports(context.Context) (nat.PortMap, error) // get all exposed ports
SessionID() string // get session id
Start(context.Context) error // start the container
Terminate(context.Context) error // terminate the container
Logs(context.Context) (io.ReadCloser, error) // Get logs of the container
Name(context.Context) (string, error) // get container name
Networks(context.Context) ([]string, error) // get container networks
NetworkAliases(context.Context) (map[string][]string, error) // get container network aliases for a network
Exec(ctx context.Context, cmd []string) (int, error)
}
// ImageBuildInfo defines what is needed to build an image
type ImageBuildInfo interface {
GetContext() (io.Reader, error) // the path to the build context
GetDockerfile() string // the relative path to the Dockerfile, including the fileitself
ShouldBuildImage() bool // return true if the image needs to be built
}
// FromDockerfile represents the parameters needed to build an image from a Dockerfile
// rather than using a pre-built one
type FromDockerfile struct {
Context string // the path to the context of of the docker build
ContextArchive io.Reader // the tar archive file to send to docker that contains the build context
Dockerfile string // the path from the context to the Dockerfile for the image, defaults to "Dockerfile"
}
// ContainerRequest represents the parameters used to get a running container
type ContainerRequest struct {
FromDockerfile
Image string
Env map[string]string
ExposedPorts []string // allow specifying protocol info
Cmd []string
Labels map[string]string
BindMounts map[string]string
RegistryCred string
WaitingFor wait.Strategy
Name string // for specifying container name
Privileged bool // for starting privileged container
Networks []string // for specifying network names
NetworkAliases map[string][]string // for specifying network aliases
SkipReaper bool // indicates whether we skip setting up a reaper for this
}
// ProviderType is an enum for the possible providers
type ProviderType int
// possible provider types
const (
ProviderDocker ProviderType = iota // Docker is default = 0
)
// GetProvider provides the provider implementation for a certain type
func (t ProviderType) GetProvider() (GenericProvider, error) {
switch t {
case ProviderDocker:
provider, err := NewDockerProvider()
if err != nil {
return nil, errors.Wrap(err, "failed to create Docker provider")
}
return provider, nil
}
return nil, errors.New("unknown provider")
}
// Validate ensures that the ContainerRequest does not have invalid paramters configured to it
// ex. make sure you are not specifying both an image as well as a context
func (c *ContainerRequest) Validate() error {
validationMethods := []func() error{
c.validateContextAndImage,
c.validateContexOrImageIsSpecified,
}
var err error
for _, validationMethod := range validationMethods {
err = validationMethod()
if err != nil {
return err
}
}
return nil
}
// GetContext retrieve the build context for the request
func (c *ContainerRequest) GetContext() (io.Reader, error) {
if c.ContextArchive != nil {
return c.ContextArchive, nil
}
buildContext, err := archive.TarWithOptions(c.Context, &archive.TarOptions{})
if err != nil {
return nil, err
}
return buildContext, nil
}
// GetDockerfile returns the Dockerfile from the ContainerRequest, defaults to "Dockerfile"
func (c *ContainerRequest) GetDockerfile() string {
f := c.FromDockerfile.Dockerfile
if f == "" {
return "Dockerfile"
}
return f
}
func (c *ContainerRequest) ShouldBuildImage() bool {
return c.FromDockerfile.Context != "" || c.FromDockerfile.ContextArchive != nil
}
func (c *ContainerRequest) validateContextAndImage() error {
if c.FromDockerfile.Context != "" && c.Image != "" {
return errors.New("you cannot specify both an Image and Context in a ContainerRequest")
}
return nil
}
func (c *ContainerRequest) validateContexOrImageIsSpecified() error {
if c.FromDockerfile.Context == "" && c.FromDockerfile.ContextArchive == nil && c.Image == "" {
return errors.New("you must specify either a build context or an image")
}
return nil
}