/
container.go
219 lines (171 loc) · 4.41 KB
/
container.go
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//go:generate mockgen -destination=./mocks/mock_container.go -package=mocks . Handler
//Package container provides primitives for configuration and starting all primitives in the module
package container
import (
"encoding/json"
"github.com/google/wire"
"github.com/mnikita/task-queue/pkg/connection"
"github.com/mnikita/task-queue/pkg/connector"
"github.com/mnikita/task-queue/pkg/consumer"
"github.com/mnikita/task-queue/pkg/log"
"github.com/mnikita/task-queue/pkg/util"
"github.com/mnikita/task-queue/pkg/worker"
"io/ioutil"
"os"
)
var WireSet = wire.NewSet(NewContainer, NewConfiguration,
wire.Bind(new(Handler), new(*Container)), worker.WireSet, consumer.WireSet,
connector.WireSet, connection.WireSet)
type Handler interface {
Init(configFile string) error
Close() error
ConnectionHandler() consumer.ConnectionHandler
Connection() connection.Handler
Worker() worker.Handler
Consumer() consumer.Handler
Connector() connector.Handler
Config() *Configuration
}
type Configuration struct {
ConnectionConfig *connection.Configuration
WorkerConfig *worker.Configuration
ConsumerConfig *consumer.Configuration
ConnectorConfig *connector.Configuration
ConfigFile string `json:"-"`
configWatcher *util.ConfigWatcher `json:"-"`
}
type Container struct {
*Configuration
connection connection.Handler
worker worker.Handler
consumer consumer.Handler
connector connector.Handler
}
func (c *Configuration) load() error {
if c.ConfigFile == "" {
//nothing to load
return nil
}
jsonFile, err := os.Open(c.ConfigFile)
if err != nil {
return err
}
configData, err := ioutil.ReadAll(jsonFile)
if err != nil {
return err
}
err = json.Unmarshal(configData, c)
if err != nil {
return err
}
log.Logger().ContainerConfigLoaded(c.ConfigFile)
err = c.initConfigWatcher()
if err != nil {
return err
}
return nil
}
func (c *Configuration) close() error {
if c.ConfigFile == "" {
//nothing to close
return nil
}
return c.closeConfigWatcher()
}
func (c *Configuration) initConfigWatcher() (err error) {
c.configWatcher, err = util.NewConfigWatcher(c)
if err != nil {
return err
}
err = c.configWatcher.WatchConfigFile(c.ConfigFile)
if err != nil {
return err
}
return nil
}
func (c *Configuration) closeConfigWatcher() (err error) {
return c.configWatcher.StopWatch()
}
func NewConfiguration(workerConfig *worker.Configuration, consumerConfig *consumer.Configuration,
connectorConfig *connector.Configuration, connectionConfig *connection.Configuration) *Configuration {
config := &Configuration{}
config.WorkerConfig = workerConfig
config.ConsumerConfig = consumerConfig
config.ConnectorConfig = connectorConfig
config.ConnectionConfig = connectionConfig
return config
}
func NewContainer(config *Configuration, connectionHandler connection.Handler,
connectorHandler connector.Handler, workerHandler worker.Handler,
consumerHandler consumer.Handler) *Container {
c := &Container{}
c.Configuration = config
c.connection = connectionHandler
c.connector = connectorHandler
c.worker = workerHandler
c.consumer = consumerHandler
return c
}
func (c *Container) Init(configFile string) (err error) {
//Init Configuration
c.ConfigFile = configFile
if err = c.load(); err != nil {
return err
}
//Init Objects
if err = c.Connection().Init(); err != nil {
return err
}
if err = c.Worker().Init(); err != nil {
return err
}
if err = c.Consumer().Init(); err != nil {
return err
}
if err = c.Connector().Init(); err != nil {
return err
}
return nil
}
func (c *Container) Close() (err error) {
//Close Objects
err = c.Connector().Close()
if err != nil {
return err
}
err = c.Consumer().Close()
if err != nil {
return err
}
err = c.Worker().Close()
if err != nil {
return err
}
err = c.Connection().Close()
if err != nil {
return err
}
//Close Configuration
return c.close()
}
func (c *Container) Connection() connection.Handler {
return c.connection
}
func (c *Container) Worker() worker.Handler {
return c.worker
}
func (c *Container) Consumer() consumer.Handler {
return c.consumer
}
func (c *Container) ConnectionHandler() consumer.ConnectionHandler {
return c.connection.(consumer.ConnectionHandler)
}
func (c *Container) Connector() connector.Handler {
return c.connector
}
func (c *Container) Config() *Configuration {
return c.Configuration
}
func (c *Configuration) OnConfigModified() {
//TODO: Implement configuration modification logic
}