func StartApparatchik(dockerClient *docker.Client) (*Apparatchik, error) {
dockerEventsChannel := make(chan *docker.APIEvents, 20)
err := dockerClient.AddEventListener(dockerEventsChannel)
if err != nil {
return nil, err
}
apparatchick := &Apparatchik{
applications: map[string]*Application{},
dockerClient: dockerClient,
dockerEventsChannel: dockerEventsChannel,
Emitter: emission.NewEmitter(),
}
apparatchick.Emitter.SetMaxListeners(MaxListeners)
// call HandleDockerEvent for every new docker event
// in a separate go-routine
go func() {
for evt := range dockerEventsChannel {
apparatchick.HandleDockerEvent(evt)
}
}()
apparatchick.Emitter.Emit("applications", apparatchick.applicatioNames())
return apparatchick, nil
}
func NewApplication(applicationName string, applicationConfiguration *ApplicationConfiguration, dockerClient *docker.Client) *Application {
fileName := "/applications/" + applicationName + ".json"
json, err := json.Marshal(applicationConfiguration)
if err != nil {
panic(err)
}
ioutil.WriteFile(fileName, json, 0644)
emitter := emission.NewEmitter()
emitter.SetMaxListeners(MaxListeners)
app := &Application{
Name: applicationName,
Configuration: applicationConfiguration,
Goals: map[string]*Goal{},
MainGoal: applicationConfiguration.MainGoal,
ApplicationFileName: fileName,
DockerClient: dockerClient,
Emitter: emitter,
}
app.startGoals()
app.Emit("update", app.Status())
return app
}
func NewGoal(application *Application, goalName string, applicationName string, configs map[string]*GoalConfiguration, dockerClient *docker.Client) *Goal {
config := configs[goalName]
emitter := emission.NewEmitter()
emitter.SetMaxListeners(MaxListeners)
goal := &Goal{
application: application,
Name: goalName,
ApplicationName: applicationName,
DockerClient: dockerClient,
CurrentStatus: "not_running",
RunAfterStatuses: map[string]string{},
LinksStatuses: map[string]string{},
AuthConfig: config.AuthConfig,
transitionLog: []TransitionLogEntry{},
UpstreamGoalStatuses: map[string]string{},
SmartRestart: config.SmartRestart,
CreateContainerOptions: docker.CreateContainerOptions{
Name: containerName(applicationName, goalName, config.ContainerName),
Config: &docker.Config{
Image: config.Image,
Cmd: config.Command,
ExposedPorts: map[docker.Port]struct{}{},
Env: []string{},
Labels: config.Labels,
WorkingDir: config.WorkingDir,
Entrypoint: config.Entrypoint,
User: config.User,
Hostname: config.Hostname,
Domainname: config.Domainname,
MacAddress: config.MacAddress,
OpenStdin: config.StdinOpen,
Tty: config.Tty,
VolumeDriver: config.VolumeDrvier,
AttachStdin: config.AttachStdin,
AttachStdout: config.AttachStdout,
AttachStderr: config.AttachStderr,
},
HostConfig: &docker.HostConfig{
ExtraHosts: config.ExtraHosts,
PortBindings: map[docker.Port][]docker.PortBinding{},
Binds: []string{},
CapAdd: config.CapAdd,
CapDrop: config.CapDrop,
DNSSearch: config.DNSSearch,
Devices: []docker.Device{},
SecurityOpt: config.SecurityOpt,
Memory: config.MemLimit,
MemorySwap: config.MemSwapLimit,
Privileged: config.Privileged,
CPUShares: config.CpuShares,
CPUSetCPUs: config.CpuSet,
CPUSetMEMs: config.CpuSet,
ReadonlyRootfs: config.ReadOnly,
},
},
Emitter: emitter,
}
if config.Restart != "" {
goal.CreateContainerOptions.HostConfig.RestartPolicy = docker.RestartPolicy{Name: config.Restart}
}
for _, deviceString := range config.Devices {
parts := strings.Split(deviceString, ":")
perm := "mrw"
hostDevice := parts[0]
containerDevice := parts[0]
if len(parts) == 3 {
perm = parts[2]
containerDevice = parts[1]
} else if len(parts) == 2 {
if len(parts[1]) > 3 {
containerDevice = parts[1]
} else {
containerDevice = parts[0]
perm = parts[1]
}
}
goal.CreateContainerOptions.HostConfig.Devices = append(goal.CreateContainerOptions.HostConfig.Devices, docker.Device{
PathOnHost: hostDevice,
PathInContainer: containerDevice,
CgroupPermissions: perm})
}
if len(config.Dns) != 0 {
goal.CreateContainerOptions.HostConfig.DNS = config.Dns
}
if config.Net != "" {
goal.CreateContainerOptions.HostConfig.NetworkMode = config.Net
}
if config.LogDriver != "" {
goal.CreateContainerOptions.HostConfig.LogConfig = docker.LogConfig{
Type: config.LogDriver,
Config: config.LogConfig,
}
}
for k, v := range config.Environment {
goal.CreateContainerOptions.Config.Env = append(goal.CreateContainerOptions.Config.Env, k+"="+v)
}
for _, bind := range config.Volumes {
parts := strings.Split(bind, ":")
if len(parts) == 1 {
goal.CreateContainerOptions.HostConfig.Binds = append(goal.CreateContainerOptions.HostConfig.Binds, replaceRelativePath(parts[0]+":"+parts[0]))
} else if len(parts) == 2 {
if parts[1] == "rw" || parts[1] == "ro" {
goal.CreateContainerOptions.HostConfig.Binds = append(goal.CreateContainerOptions.HostConfig.Binds, replaceRelativePath(parts[0]+":"+parts[0]+":"+parts[1]))
} else {
goal.CreateContainerOptions.HostConfig.Binds = append(goal.CreateContainerOptions.HostConfig.Binds, replaceRelativePath(bind))
}
} else {
goal.CreateContainerOptions.HostConfig.Binds = append(goal.CreateContainerOptions.HostConfig.Binds, replaceRelativePath(bind))
}
}
for _, name := range config.RunAfter {
goal.RunAfterStatuses[name] = "unknown"
}
for _, link := range config.Links {
parts := strings.Split(link, ":")
name := parts[0]
alias := name
if len(parts) > 1 {
alias = parts[1]
}
goal.LinksStatuses[name] = "unknown"
goal.CreateContainerOptions.HostConfig.Links = append(goal.CreateContainerOptions.HostConfig.Links, containerName(applicationName, name, configs[name].ContainerName)+":"+alias)
}
for _, link := range config.ExternalLinks {
parts := strings.Split(link, ":")
name := parts[0]
alias := name
if len(parts) > 1 {
alias = parts[1]
}
goal.CreateContainerOptions.HostConfig.Links = append(goal.CreateContainerOptions.HostConfig.Links, name+":"+alias)
}
for _, port := range config.Ports {
protoParts := strings.Split(port, "/")
proto := "tcp"
if len(protoParts) == 2 {
proto = protoParts[1]
}
parts := strings.Split(protoParts[0], ":")
hostPort := ""
containerPort := parts[0]
if len(parts) == 2 {
hostPort = parts[0]
containerPort = parts[1]
portBinding := docker.PortBinding{HostPort: hostPort}
goal.CreateContainerOptions.HostConfig.PortBindings[docker.Port(containerPort+"/"+proto)] = []docker.PortBinding{portBinding}
} else {
goal.CreateContainerOptions.HostConfig.PortBindings[docker.Port(containerPort+"/"+proto)] = []docker.PortBinding{}
}
}
for _, port := range config.Expose {
protoParts := strings.Split(port, "/")
proto := "tcp"
if len(protoParts) == 2 {
proto = protoParts[1]
}
goal.CreateContainerOptions.Config.ExposedPorts[docker.Port(protoParts[0]+"/"+proto)] = struct{}{}
}
goal.FetchImage()
goal.broadcastStatus()
return goal
}