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main.go
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package main
import (
"flag"
"os"
"reflect"
"github.com/AnubhavUjjawal/MoMo/operators"
"github.com/AnubhavUjjawal/MoMo/worker"
"github.com/AnubhavUjjawal/MoMo/logger"
"github.com/AnubhavUjjawal/MoMo/server"
"github.com/AnubhavUjjawal/MoMo/core"
"github.com/AnubhavUjjawal/MoMo/scheduler"
)
func registerOperators() {
// TODO: Refactor this.
// TODO: Allow custom operators via plugins
bashOp := &operators.BashOperator{}
baseTask := &core.BaseTask{}
core.OperatorsRegistry[bashOp.GetRegistryName()] = reflect.TypeOf(*bashOp)
core.OperatorsRegistry[baseTask.GetRegistryName()] = reflect.TypeOf(*baseTask)
// fmt.Println(core.OperatorsRegistry)
}
func main() {
registerOperators()
sugar := logger.GetSugaredLogger()
sugar.Info("Starting MoMo 😽😺: A Workflow management platform inspired by Apache Airflow!")
// Sample DAG check
// schedule, _ := time.ParseDuration("2h")
// sampleDag := &core.DAG{Name: "SampleDAG", Schedule: schedule}
// task1, _ := core.NewTask("SampleTask1", "sample description", sampleDag, core.Dict{"1": "2"})
// task2, _ := core.NewTask("SampleTask2", "sample description", sampleDag, core.Dict{"1": "2"})
// task3, _ := core.NewTask("SampleTask3", "sample description", sampleDag, core.Dict{"1": "2"})
// task4, _ := core.NewTask("SampleTask4", "sample description", sampleDag, core.Dict{"1": "2"})
// task5, _ := core.NewTask("SampleTask5", "sample description", sampleDag, core.Dict{"1": "2"})
// task6, _ := core.NewTask("SampleTask6", "sample description", sampleDag, core.Dict{"1": "2"})
// task1.AddUpstream(task2)
// task5.AddUpstream(task6)
// // task6.AddUpstream(task4)
// task4.AddUpstream(task5)
// task4.AddUpstream(task1)
// sampleDag.LogInfo()
// for task := range sampleDag.TopologicalSortedTasks() {
// fmt.Println(task.GetName())
// }
// task3.Void()
if len(os.Args) < 2 {
sugar.Fatalw("Failed to provide subcommand.")
}
commands := registerSubCommands()
parseSubCommand(commands)
}
func registerSubCommands() []core.CommandInterface {
// TODO: Allow users to add their own custom commands.
// This can be done by GO plugins
// https://medium.com/learning-the-go-programming-language/writing-modular-go-programs-with-plugins-ec46381ee1a9
commands := make([]core.CommandInterface, 0)
commands = append(commands,
scheduler.NewCommand(),
server.NewCommand(),
worker.NewCommand())
return commands
}
func parseSubCommand(commands []core.CommandInterface) {
sugar := logger.GetSugaredLogger()
success := false
for _, command := range commands {
if command.GetCommandString() == os.Args[1] {
command.RunCommand()
success = true
}
}
if !success {
sugar.Fatalw("Invalid subcommand.")
flag.PrintDefaults()
os.Exit(1)
}
}