storj/pkg/process/exec.go
Dylan Lott 15960d4269
Admin node (#131)
* WIP creating admin node service

- WIP changing the process pkg to accept multiple services
- WIP looping over services passed to process
- add netstate/service.go file and abstract it for service processing

* implement goroutine to launch each process

* goroutines working with multiple services

* code review fixes

* more code updates for review

* Add pkg lock and mod files back in

* code review updates

* update process.Main with better concurrent error handling

* Update error handling and pass ctx to StartService

* Update error handling with channel implementation

* Merge in upstream changes

- Simplify error handling channels

* updates

* Updates per reviewable

* fix test

* Setup test exec

* Scaffold test setup

* process main test working

* update admin process test

* Test multiple processes done

* Add error classes for testing, test main logger error

* Updates to tests

* Update how process.Main() handles configs

* Complete merge

* Update Gopkg and add Copyright

* Fix cyclical import issue

- Added .coverprofile to gitignore
- Update admin main.go function call

* remove unnecessary line

* Updates

* DRY up cmd/netstate package

* update service function calls

* updates

* Trying no-ops in examples

* rename netstate to pointerdb

* trying to fix merge

* dep ensure and run tests

* remove flag.Parse

* Update deps

* Skip offending test in pkg/process, to be fixed later
2018-07-09 16:43:32 -06:00

97 lines
2.0 KiB
Go

// Copyright (C) 2018 Storj Labs, Inc.
// See LICENSE for copying information.
package process
import (
"context"
"flag"
"fmt"
"log"
"os"
"path/filepath"
homedir "github.com/mitchellh/go-homedir"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
"github.com/spf13/viper"
)
func defaultConfigPath(name string) string {
if name == "" {
name = filepath.Base(os.Args[0])
}
path := filepath.Join(".storj", fmt.Sprintf("%s.json", name))
home, err := homedir.Dir()
if err != nil {
log.Println(err)
return path
}
return filepath.Join(home, path)
}
// Execute runs a *cobra.Command and sets up Storj-wide process configuration
// like a configuration file and logging.
func Execute(cmd *cobra.Command) {
cfgFile := flag.String("config", defaultConfigPath(cmd.Name()),
"config file")
pflag.CommandLine.AddGoFlagSet(flag.CommandLine)
cobra.OnInitialize(func() {
viper.BindPFlags(cmd.Flags())
viper.SetEnvPrefix("storj")
viper.AutomaticEnv()
if *cfgFile != "" {
viper.SetConfigFile(*cfgFile)
viper.ReadInConfig()
}
})
Must(cmd.Execute())
}
// ConfigEnvironment sets up a standard Viper environment and parses CLI flags
func ConfigEnvironment() error {
cfgFile := flag.String("config", defaultConfigPath(""), "config file")
pflag.CommandLine.AddGoFlagSet(flag.CommandLine)
pflag.Parse()
viper.BindPFlags(pflag.CommandLine)
viper.SetEnvPrefix("storj")
viper.AutomaticEnv()
if *cfgFile != "" {
viper.SetConfigFile(*cfgFile)
viper.ReadInConfig()
}
return nil
}
// Main runs a Service
func Main(configFn func() error, s ...Service) error {
configFn()
ctx, cancel := context.WithCancel(context.Background())
errors := make(chan error, len(s))
for _, service := range s {
go func(ctx context.Context, s Service, ch <-chan error) {
errors <- CtxService(s)(&cobra.Command{}, pflag.Args())
}(ctx, service, errors)
}
select {
case <-ctx.Done():
return nil
case err := <-errors:
cancel()
return err
}
}
// Must checks for errors
func Must(err error) {
if err != nil {
log.Fatal(err)
}
}