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fs_main.go
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fs_main.go
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/*
* Copyright (c) 2018. Abstrium SAS <team (at) pydio.com>
* This file is part of Pydio Cells.
*
* Pydio Cells is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pydio Cells is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Pydio Cells. If not, see <http://www.gnu.org/licenses/>.
*
* The latest code can be found at <https://pydio.com>.
*/
// Package main provides a command line version of sync
package main
import (
"bufio"
"context"
"errors"
"fmt"
"log"
"net/url"
"os"
"os/signal"
"runtime"
"strings"
"sync"
"syscall"
"github.com/pydio/cells/data/source/sync/lib/common"
"github.com/pydio/cells/data/source/sync/lib/endpoints"
"github.com/pydio/cells/data/source/sync/lib/proc"
"github.com/pydio/cells/data/source/sync/lib/task"
)
// Parse an argument to create a Sync Endpoint
// Expected format can be
// + fs:///Path/to/file
// + s3://apikey:secret@host:port/bucket/folder
// + db://
// Resulting examples
// source := endpoints.NewFSClient("/Users/charles/tmp/source")
// source := endpoints.NewS3Client("127.0.0.1:9001", "minio", "miniostorage", "test", watchPath)
// source := endpoints.NewMemDB()
func parseUrl(urlArg string, otherArgs []string) (endpoint common.Endpoint, e error) {
u, e := url.Parse(urlArg)
if e != nil {
return nil, e
}
if u.Scheme == "fs" {
path := u.Path
if runtime.GOOS == "windows" {
parts := strings.Split(path, "/")
path = parts[1] + ":/" + strings.Join(parts[2:], "/")
}
return endpoints.NewFSClient(path)
} else if u.Scheme == "db" {
return endpoints.NewMemDB(), nil
} else if u.Scheme == "s3" || u.Scheme == "s3mac" {
fullPath := u.Path
parts := strings.Split(fullPath, "/")
bucket := parts[1]
parts = parts[2:]
rootPath := strings.Join(parts, "/")
if u.User == nil {
return nil, errors.New("Please provide API Keys and Secret in URL")
}
password, _ := u.User.Password()
log.Print(u.Host, "-", u.User.Username(), "-", password, "-", bucket, "-", rootPath)
// FS watch ?
if len(otherArgs) == 4 {
fsRootPath := otherArgs[3]
client, err := endpoints.NewS3ClientFSWatch(context.Background(), u.Host, u.User.Username(), password, bucket, rootPath, fsRootPath)
if err != nil {
return nil, err
}
if u.Scheme == "s3mac" {
client.ServerRequiresNormalization = true
}
return client, nil
} else {
client, err := endpoints.NewS3Client(context.Background(), u.Host, u.User.Username(), password, bucket, rootPath)
if err != nil {
return nil, err
}
if u.Scheme == "s3mac" {
client.ServerRequiresNormalization = true
}
return client, nil
}
} else {
return nil, errors.New("Unsupported scheme " + u.Scheme)
}
}
func parseArgs(args []string) (common.PathSyncSource, common.PathSyncTarget) {
if len(args) < 3 {
log.Fatal("Please enter at least two arguments")
}
source, e1 := parseUrl(args[1], args)
target, e2 := parseUrl(args[2], args)
if e1 != nil || e2 != nil {
log.Fatalf("Cannot parse urls %v, %v", e1, e2)
}
return interface{}(source).(common.PathSyncSource), interface{}(target).(common.PathSyncTarget)
}
func main() {
ctx := context.Background()
source, target := parseArgs(os.Args)
trapCh := SignalTrap(os.Interrupt, syscall.SIGTERM)
commandLineCh := make(chan bool)
resyncCh := make(chan bool)
// Initialize.. waitgroup to track the go-routine.
wg := sync.WaitGroup{}
// Increment wait group to wait subsequent routine.
wg.Add(1)
testInfo := make(chan string)
testHeader := make(chan string)
dbEvents := make(chan endpoints.DBEvent)
processorEvents := make(chan common.ProcessorEvent)
syncTask := task.NewSync(ctx, source, target)
syncTask.Start(ctx)
syncTask.Resync(ctx, false, nil)
// Start routine to watching on events.
go func() {
defer wg.Done()
// Wait for all events.
for {
select {
case <-trapCh:
// Signal received we are done.
log.Println("Closing")
syncTask.Shutdown()
return
case <-commandLineCh:
// Signal received we are done.
log.Println("Closing!")
syncTask.Shutdown()
return
case <-resyncCh:
syncTask.Resync(ctx, false, nil)
case dbEvent := <-dbEvents:
log.Printf("[DB] %v", dbEvent)
case processorEvent := <-processorEvents:
if processorEvent.Type == "merger:end" {
log.Println(processorEvent.Type)
diff, err := proc.ComputeSourcesDiff(ctx, source, interface{}(target).(common.PathSyncSource), true)
if err != nil {
log.Println("Error while computing sources diff", err)
} else if len(diff.MissingLeft) > 0 || len(diff.MissingRight) > 0 {
log.Println(diff)
log.Printf("%v %v", len(diff.MissingLeft), len(diff.MissingRight))
} else {
log.Println(" -- Diff is successful")
}
} else {
//log.Println(processorEvent.Batch)
}
case testString := <-testInfo:
log.Println(" * " + testString)
case testString := <-testHeader:
log.Println("")
log.Println("")
log.Println(testString)
}
}
}()
go func() {
fmt.Println("Type 'exit' and enter or Ctrl+C to quit, type 'resync' and enter to launch a resync.")
scanner := bufio.NewScanner(os.Stdin)
for scanner.Scan() {
text := scanner.Text()
if text == "exit" {
fmt.Println("Exiting ?")
commandLineCh <- true
} else if text == "resync" {
syncTask.Resync(context.Background(), false, nil)
} else {
fmt.Println("Unsupported command, type exit or resync")
}
}
}()
/*
if(len(os.Args) > 2){
externalPath := os.Args[2]
f, err := os.OpenFile(filepath.Join(externalPath, "testlogfile"), os.O_RDWR | os.O_CREATE | os.O_APPEND, 0777)
if err != nil {
log.Printf("error opening file: %v", err)
}else{
defer f.Close()
log.SetOutput(f)
}
common.PerformTests(watchPath, externalPath, testInfo, testHeader)
}
*/
// Wait on the routine to be finished or exit.
wg.Wait()
}
func checkErr(err error) {
if err != nil {
log.Fatal(err)
}
}
// signalTrap traps the registered signals and notifies the caller.
func SignalTrap(sig ...os.Signal) <-chan bool {
// channel to notify the caller.
trapCh := make(chan bool, 1)
go func(chan<- bool) {
// channel to receive signals.
sigCh := make(chan os.Signal, 1)
defer close(sigCh)
// `signal.Notify` registers the given channel to
// receive notifications of the specified signals.
signal.Notify(sigCh, sig...)
// Wait for the signal.
<-sigCh
// Once signal has been received stop signal Notify handler.
signal.Stop(sigCh)
// Notify the caller.
trapCh <- true
}(trapCh)
return trapCh
}