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server.go
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server.go
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package server
import (
"bytes"
"context"
"crypto/tls"
"crypto/x509"
"encoding/json"
"errors"
"fmt"
"io"
"net/http"
"net/http/pprof"
"net/url"
"os"
"os/signal"
"path"
"path/filepath"
"regexp"
"strconv"
"strings"
"syscall"
"time"
"github.com/Altinity/clickhouse-backup/v2/pkg/backup"
"github.com/Altinity/clickhouse-backup/v2/pkg/clickhouse"
"github.com/Altinity/clickhouse-backup/v2/pkg/common"
"github.com/Altinity/clickhouse-backup/v2/pkg/config"
"github.com/Altinity/clickhouse-backup/v2/pkg/resumable"
"github.com/Altinity/clickhouse-backup/v2/pkg/server/metrics"
"github.com/Altinity/clickhouse-backup/v2/pkg/status"
"github.com/Altinity/clickhouse-backup/v2/pkg/utils"
apexLog "github.com/apex/log"
"github.com/google/shlex"
"github.com/gorilla/mux"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/urfave/cli"
)
type APIServer struct {
cliApp *cli.App
cliCtx *cli.Context
configPath string
config *config.Config
server *http.Server
restart chan struct{}
metrics *metrics.APIMetrics
log *apexLog.Entry
routes []string
clickhouseBackupVersion string
}
var (
ErrAPILocked = errors.New("another operation is currently running")
)
// Run - expose CLI commands as REST API
func Run(cliCtx *cli.Context, cliApp *cli.App, configPath string, clickhouseBackupVersion string) error {
log := apexLog.WithField("logger", "server.Run")
var (
cfg *config.Config
err error
)
log.Debug("Wait for ClickHouse")
for {
cfg, err = config.LoadConfig(configPath)
if err != nil {
log.Error(err.Error())
time.Sleep(5 * time.Second)
continue
}
ch := clickhouse.ClickHouse{
Config: &cfg.ClickHouse,
Log: apexLog.WithField("logger", "clickhouse"),
}
if err := ch.Connect(); err != nil {
log.Error(err.Error())
time.Sleep(5 * time.Second)
continue
}
_ = ch.GetConn().Close()
break
}
api := APIServer{
cliApp: cliApp,
cliCtx: cliCtx,
configPath: configPath,
config: cfg,
restart: make(chan struct{}),
clickhouseBackupVersion: clickhouseBackupVersion,
metrics: metrics.NewAPIMetrics(),
log: apexLog.WithField("logger", "server"),
}
if cfg.API.CreateIntegrationTables {
if err := api.CreateIntegrationTables(); err != nil {
log.Error(err.Error())
}
}
api.metrics.RegisterMetrics()
log.Infof("Starting API server %s on %s", api.cliApp.Version, api.config.API.ListenAddr)
sigterm := make(chan os.Signal, 1)
signal.Notify(sigterm, os.Interrupt, syscall.SIGTERM)
sighup := make(chan os.Signal, 1)
signal.Notify(sighup, os.Interrupt, syscall.SIGHUP)
if err := api.Restart(); err != nil {
return err
}
if api.config.API.CompleteResumableAfterRestart {
go func() {
if err := api.ResumeOperationsAfterRestart(); err != nil {
log.Errorf("ResumeOperationsAfterRestart return error: %v", err)
}
}()
}
go func() {
if metricsErr := api.UpdateBackupMetrics(context.Background(), false); metricsErr != nil {
log.Errorf("UpdateBackupMetrics return error: %v", metricsErr)
}
}()
if cliCtx.Bool("watch") {
go api.RunWatch(cliCtx)
}
for {
select {
case <-api.restart:
if err := api.Restart(); err != nil {
log.Errorf("Failed to restarting API server: %v", err)
continue
}
log.Infof("Reloaded by HTTP")
case <-sighup:
if err := api.Restart(); err != nil {
log.Errorf("Failed to restarting API server: %v", err)
continue
}
log.Info("Reloaded by SIGHUP")
case <-sigterm:
log.Info("Stopping API server")
return api.Stop()
}
}
}
func (api *APIServer) GetMetrics() *metrics.APIMetrics {
return api.metrics
}
func (api *APIServer) RunWatch(cliCtx *cli.Context) {
api.log.Info("Starting API Server in watch mode")
b := backup.NewBackuper(api.config)
commandId, _ := status.Current.Start("watch")
err := b.Watch(
cliCtx.String("watch-interval"), cliCtx.String("full-interval"), cliCtx.String("watch-backup-name-template"),
"*.*", nil, false, false, false, false,
api.clickhouseBackupVersion, commandId, api.GetMetrics(), cliCtx,
)
api.handleWatchResponse(commandId, err)
}
// Stop cancel all running commands, @todo think about graceful period
func (api *APIServer) Stop() error {
status.Current.CancelAll("canceled during server stop")
return api.server.Close()
}
func (api *APIServer) Restart() error {
log := apexLog.WithField("logger", "server.Restart").WithField("version", api.cliApp.Version)
_, err := api.ReloadConfig(nil, "restart")
if err != nil {
return err
}
status.Current.CancelAll("canceled via API /restart")
if api.server != nil {
_ = api.server.Close()
}
server := api.registerHTTPHandlers()
api.server = server
if api.config.API.Secure {
go func() {
err = api.server.ListenAndServeTLS(api.config.API.CertificateFile, api.config.API.PrivateKeyFile)
if err != nil {
if errors.Is(err, http.ErrServerClosed) {
log.Warnf("ListenAndServeTLS get signal: %s", err.Error())
} else {
log.Fatalf("ListenAndServeTLS error: %s", err.Error())
}
}
}()
return nil
} else {
go func() {
if err = api.server.ListenAndServe(); err != nil {
if errors.Is(err, http.ErrServerClosed) {
log.Warnf("ListenAndServe get signal: %s", err.Error())
} else {
log.Fatalf("ListenAndServe error: %s", err.Error())
}
}
}()
}
return nil
}
// registerHTTPHandlers - resister API routes
func (api *APIServer) registerHTTPHandlers() *http.Server {
log := apexLog.WithField("logger", "registerHTTPHandlers")
r := mux.NewRouter()
r.Use(api.basicAuthMiddleware)
r.NotFoundHandler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
api.writeError(w, http.StatusNotFound, r.URL.Path, fmt.Errorf("%s %s 404 Not Found", r.Method, r.URL))
})
r.MethodNotAllowedHandler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
api.writeError(w, http.StatusMethodNotAllowed, r.URL.Path, fmt.Errorf("405 Method %s Not Allowed", r.Method))
})
r.HandleFunc("/", api.httpRootHandler).Methods("GET", "HEAD")
r.HandleFunc("/", api.httpRestartHandler).Methods("POST")
r.HandleFunc("/restart", api.httpRestartHandler).Methods("POST", "GET")
r.HandleFunc("/backup/version", api.httpVersionHandler).Methods("GET", "HEAD")
r.HandleFunc("/backup/kill", api.httpKillHandler).Methods("POST", "GET")
r.HandleFunc("/backup/watch", api.httpWatchHandler).Methods("POST", "GET")
r.HandleFunc("/backup/tables", api.httpTablesHandler).Methods("GET")
r.HandleFunc("/backup/tables/all", api.httpTablesHandler).Methods("GET")
r.HandleFunc("/backup/list", api.httpListHandler).Methods("GET", "HEAD")
r.HandleFunc("/backup/list/{where}", api.httpListHandler).Methods("GET")
r.HandleFunc("/backup/create", api.httpCreateHandler).Methods("POST")
r.HandleFunc("/backup/clean", api.httpCleanHandler).Methods("POST")
r.HandleFunc("/backup/clean/remote_broken", api.httpCleanRemoteBrokenHandler).Methods("POST")
r.HandleFunc("/backup/upload/{name}", api.httpUploadHandler).Methods("POST")
r.HandleFunc("/backup/download/{name}", api.httpDownloadHandler).Methods("POST")
r.HandleFunc("/backup/restore/{name}", api.httpRestoreHandler).Methods("POST")
r.HandleFunc("/backup/delete/{where}/{name}", api.httpDeleteHandler).Methods("POST")
r.HandleFunc("/backup/status", api.httpBackupStatusHandler).Methods("GET")
r.HandleFunc("/backup/actions", api.actionsLog).Methods("GET", "HEAD")
r.HandleFunc("/backup/actions", api.actions).Methods("POST")
var routes []string
if err := r.Walk(func(route *mux.Route, router *mux.Router, ancestors []*mux.Route) error {
t, err := route.GetPathTemplate()
if err != nil {
return err
}
routes = append(routes, t)
return nil
}); err != nil {
log.Errorf("mux.Router.Walk return error: %v", err)
return nil
}
api.routes = routes
api.registerMetricsHandlers(r, api.config.API.EnableMetrics, api.config.API.EnablePprof)
srv := &http.Server{
Addr: api.config.API.ListenAddr,
Handler: r,
}
if api.config.API.CACertFile != "" {
caCert, err := os.ReadFile(api.config.API.CACertFile)
if err != nil {
api.log.Fatalf("api initialization error %s: %v", api.config.API.CAKeyFile, err)
}
caCertPool := x509.NewCertPool()
caCertPool.AppendCertsFromPEM(caCert)
srv.TLSConfig = &tls.Config{
ClientCAs: caCertPool,
ClientAuth: tls.RequireAndVerifyClientCert,
}
}
return srv
}
func (api *APIServer) basicAuthMiddleware(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if r.URL.Path != "/metrics" {
api.log.Infof("API call %s %s", r.Method, r.URL.Path)
} else {
api.log.Debugf("API call %s %s", r.Method, r.URL.Path)
}
user, pass, _ := r.BasicAuth()
query := r.URL.Query()
if u, exist := query["user"]; exist {
user = u[0]
}
if p, exist := query["pass"]; exist {
pass = p[0]
}
if (user != api.config.API.Username) || (pass != api.config.API.Password) {
api.log.Warnf("%s %s Authorization failed %s:%s", r.Method, r.URL, user, pass)
w.Header().Set("WWW-Authenticate", "Basic realm=\"Provide username and password\"")
w.WriteHeader(http.StatusUnauthorized)
if _, err := w.Write([]byte("401 Unauthorized\n")); err != nil {
api.log.Errorf("RequestWriter.Write return error: %v", err)
}
return
}
next.ServeHTTP(w, r)
})
}
type actionsResultsRow struct {
Status string `json:"status"`
Operation string `json:"operation"`
}
// CREATE TABLE system.backup_actions (command String, start DateTime, finish DateTime, status String, error String) ENGINE=URL('http://127.0.0.1:7171/backup/actions?user=user&pass=pass', JSONEachRow)
// INSERT INTO system.backup_actions (command) VALUES ('create backup_name')
// INSERT INTO system.backup_actions (command) VALUES ('upload backup_name')
func (api *APIServer) actions(w http.ResponseWriter, r *http.Request) {
body, err := io.ReadAll(r.Body)
if err != nil {
api.writeError(w, http.StatusInternalServerError, "", err)
return
}
if len(body) == 0 {
api.writeError(w, http.StatusBadRequest, "", fmt.Errorf("empty request"))
return
}
lines := bytes.Split(body, []byte("\n"))
actionsResults := make([]actionsResultsRow, 0)
for _, line := range lines {
if len(line) == 0 {
continue
}
row := status.ActionRow{}
if err := json.Unmarshal(line, &row); err != nil {
api.writeError(w, http.StatusBadRequest, string(line), err)
return
}
api.log.WithField("version", api.cliApp.Version).Infof("/backup/actions call: %s", row.Command)
args, err := shlex.Split(row.Command)
if err != nil {
api.writeError(w, http.StatusBadRequest, "", err)
return
}
command := args[0]
switch command {
// watch command can't be run via cli app.Run, need parsing args
case "watch":
actionsResults, err = api.actionsWatchHandler(w, row, args, actionsResults)
if err != nil {
api.writeError(w, http.StatusInternalServerError, row.Command, err)
return
}
case "clean_remote_broken":
actionsResults, err = api.actionsCleanRemoteBrokenHandler(w, row, command, actionsResults)
if err != nil {
api.writeError(w, http.StatusInternalServerError, row.Command, err)
return
}
case "kill":
actionsResults, err = api.actionsKillHandler(row, args, actionsResults)
if err != nil {
api.writeError(w, http.StatusInternalServerError, row.Command, err)
return
}
case "create", "restore", "upload", "download", "create_remote", "restore_remote", "list":
actionsResults, err = api.actionsAsyncCommandsHandler(command, args, row, actionsResults)
if err != nil {
api.writeError(w, http.StatusInternalServerError, row.Command, err)
return
}
case "delete":
actionsResults, err = api.actionsDeleteHandler(row, args, actionsResults)
if err != nil {
api.writeError(w, http.StatusInternalServerError, row.Command, err)
return
}
default:
api.writeError(w, http.StatusBadRequest, row.Command, fmt.Errorf("unknown command"))
return
}
}
api.sendJSONEachRow(w, http.StatusOK, actionsResults)
}
func (api *APIServer) actionsDeleteHandler(row status.ActionRow, args []string, actionsResults []actionsResultsRow) ([]actionsResultsRow, error) {
if !api.config.API.AllowParallel && status.Current.InProgress() {
return actionsResults, ErrAPILocked
}
commandId, _ := status.Current.Start(row.Command)
err := api.cliApp.Run(append([]string{"clickhouse-backup", "-c", api.configPath, "--command-id", strconv.FormatInt(int64(commandId), 10)}, args...))
status.Current.Stop(commandId, err)
if err != nil {
return actionsResults, err
}
api.log.Info("DELETED")
go func() {
if metricsErr := api.UpdateBackupMetrics(context.Background(), args[1] == "local"); metricsErr != nil {
api.log.Errorf("UpdateBackupMetrics return error: %v", metricsErr)
}
}()
actionsResults = append(actionsResults, actionsResultsRow{
Status: "success",
Operation: row.Command,
})
return actionsResults, nil
}
func (api *APIServer) actionsAsyncCommandsHandler(command string, args []string, row status.ActionRow, actionsResults []actionsResultsRow) ([]actionsResultsRow, error) {
if !api.config.API.AllowParallel && status.Current.InProgress() {
return actionsResults, ErrAPILocked
}
// to avoid race condition between GET /backup/actions and POST /backup/actions
commandId, _ := status.Current.Start(row.Command)
go func() {
err, _ := api.metrics.ExecuteWithMetrics(command, 0, func() error {
return api.cliApp.Run(append([]string{"clickhouse-backup", "-c", api.configPath, "--command-id", strconv.FormatInt(int64(commandId), 10)}, args...))
})
status.Current.Stop(commandId, err)
if err != nil {
api.log.Errorf("API /backup/actions error: %v", err)
return
}
go func() {
if err := api.UpdateBackupMetrics(context.Background(), command == "create" || strings.HasPrefix(command, "restore") || command == "download"); err != nil {
api.log.Errorf("UpdateBackupMetrics return error: %v", err)
}
}()
}()
actionsResults = append(actionsResults, actionsResultsRow{
Status: "acknowledged",
Operation: row.Command,
})
return actionsResults, nil
}
func (api *APIServer) actionsKillHandler(row status.ActionRow, args []string, actionsResults []actionsResultsRow) ([]actionsResultsRow, error) {
killCommand := ""
if len(args) > 1 {
killCommand = args[1]
}
commandId, _ := status.Current.Start(row.Command)
err := status.Current.Cancel(killCommand, fmt.Errorf("canceled from API /backup/actions"))
defer status.Current.Stop(commandId, err)
if err != nil {
return actionsResults, err
}
actionsResults = append(actionsResults, actionsResultsRow{
Status: "success",
Operation: row.Command,
})
return actionsResults, nil
}
func (api *APIServer) actionsCleanRemoteBrokenHandler(w http.ResponseWriter, row status.ActionRow, command string, actionsResults []actionsResultsRow) ([]actionsResultsRow, error) {
if !api.config.API.AllowParallel && status.Current.InProgress() {
api.log.Warn(ErrAPILocked.Error())
return actionsResults, ErrAPILocked
}
commandId, _ := status.Current.Start(command)
cfg, err := api.ReloadConfig(w, "clean_remote_broken")
if err != nil {
status.Current.Stop(commandId, err)
return actionsResults, err
}
b := backup.NewBackuper(cfg)
err = b.CleanRemoteBroken(commandId)
if err != nil {
api.log.Errorf("Clean remote broken error: %v", err)
status.Current.Stop(commandId, err)
return actionsResults, err
}
api.log.Info("CLEANED")
go func() {
if metricsErr := api.UpdateBackupMetrics(context.Background(), false); metricsErr != nil {
api.log.Errorf("UpdateBackupMetrics return error: %v", metricsErr)
}
}()
status.Current.Stop(commandId, nil)
actionsResults = append(actionsResults, actionsResultsRow{
Status: "success",
Operation: row.Command,
})
return actionsResults, nil
}
func (api *APIServer) actionsWatchHandler(w http.ResponseWriter, row status.ActionRow, args []string, actionsResults []actionsResultsRow) ([]actionsResultsRow, error) {
if (!api.config.API.AllowParallel && status.Current.InProgress()) || status.Current.CheckCommandInProgress(row.Command) {
api.log.Info(ErrAPILocked.Error())
return actionsResults, ErrAPILocked
}
cfg, err := api.ReloadConfig(w, "watch")
if err != nil {
return actionsResults, err
}
tablePattern := ""
partitionsToBackup := make([]string, 0)
schemaOnly := false
rbacOnly := false
configsOnly := false
skipCheckPartsColumns := false
watchInterval := ""
fullInterval := ""
watchBackupNameTemplate := ""
fullCommand := "watch"
simpleParseArg := func(i int, args []string, paramName string) (bool, string) {
if strings.HasPrefix(args[i], paramName) {
if !strings.HasPrefix(args[i], paramName+"=") {
if i < len(args)-1 && !strings.HasPrefix(args[i+1], "--") {
return true, strings.ReplaceAll(args[i+1], "\"", "")
}
if i < len(args)-1 && strings.HasPrefix(args[i+1], "--") {
return true, ""
}
if i == len(args)-1 {
return true, ""
}
} else {
return true, strings.ReplaceAll(strings.SplitN(args[i], "=", 1)[1], "\"", "")
}
}
return false, ""
}
for i := range args {
matchParam := false
if matchParam, watchInterval = simpleParseArg(i, args, "--watch-interval"); matchParam {
fullCommand = fmt.Sprintf("%s --watch-interval=\"%s\"", fullCommand, watchInterval)
}
if matchParam, fullInterval = simpleParseArg(i, args, "--full-interval"); matchParam {
fullCommand = fmt.Sprintf("%s --full-interval=\"%s\"", fullCommand, fullInterval)
}
if matchParam, watchBackupNameTemplate = simpleParseArg(i, args, "--watch-backup-name-template"); matchParam {
fullCommand = fmt.Sprintf("%s --watch-backup-name-template=\"%s\"", fullCommand, watchBackupNameTemplate)
}
if matchParam, tablePattern = simpleParseArg(i, args, "--tables"); matchParam {
fullCommand = fmt.Sprintf("%s --tables=\"%s\"", fullCommand, tablePattern)
}
if matchParam, partitions := simpleParseArg(i, args, "--partitions"); matchParam {
partitionsToBackup = append(partitionsToBackup, partitions)
fullCommand = fmt.Sprintf("%s --partitions=\"%s\"", fullCommand, partitions)
}
if matchParam, _ = simpleParseArg(i, args, "--schema"); matchParam {
schemaOnly = true
fullCommand = fmt.Sprintf("%s --schema", fullCommand)
}
if matchParam, _ = simpleParseArg(i, args, "--rbac"); matchParam {
rbacOnly = true
fullCommand = fmt.Sprintf("%s --rbac", fullCommand)
}
if matchParam, _ = simpleParseArg(i, args, "--configs"); matchParam {
configsOnly = true
fullCommand = fmt.Sprintf("%s --configs", fullCommand)
}
if matchParam, _ = simpleParseArg(i, args, "--skip-check-parts-columns"); matchParam {
skipCheckPartsColumns = true
fullCommand = fmt.Sprintf("%s --skip-check-parts-columns", fullCommand)
}
}
commandId, _ := status.Current.Start(fullCommand)
go func() {
b := backup.NewBackuper(cfg)
err := b.Watch(watchInterval, fullInterval, watchBackupNameTemplate, tablePattern, partitionsToBackup, schemaOnly, rbacOnly, configsOnly, skipCheckPartsColumns, api.clickhouseBackupVersion, commandId, api.GetMetrics(), api.cliCtx)
api.handleWatchResponse(commandId, err)
}()
actionsResults = append(actionsResults, actionsResultsRow{
Status: "acknowledged",
Operation: row.Command,
})
return actionsResults, nil
}
func (api *APIServer) handleWatchResponse(watchCommandId int, err error) {
status.Current.Stop(watchCommandId, err)
api.log.Errorf("Watch error: %v", err)
if api.config.API.WatchIsMainProcess {
// Do not stop server if 'watch' was canceled by the user command
if errors.Is(err, context.Canceled) {
return
}
status.Current.CancelAll("canceled because main watch process stopped unexpectedly")
_ = api.server.Close()
}
}
func (api *APIServer) actionsLog(w http.ResponseWriter, r *http.Request) {
var last int64
var err error
if r.Method == http.MethodHead {
api.sendJSONEachRow(w, http.StatusOK, "")
return
}
q := r.URL.Query()
if q.Get("last") != "" {
last, err = strconv.ParseInt(q.Get("last"), 10, 16)
if err != nil {
api.log.Warn(err.Error())
api.writeError(w, http.StatusInternalServerError, "actions", err)
return
}
}
api.sendJSONEachRow(w, http.StatusOK, status.Current.GetStatus(false, q.Get("filter"), int(last)))
}
// httpRootHandler - display API index
func (api *APIServer) httpRootHandler(w http.ResponseWriter, _ *http.Request) {
w.Header().Set("Content-Type", "text/plain; charset=UTF-8")
w.Header().Set("Cache-Control", "no-store, no-cache, must-revalidate")
w.Header().Set("Pragma", "no-cache")
_, _ = fmt.Fprintf(w, "Version: %s\nDocumentation: https://github.com/Altinity/clickhouse-backup#api\n", api.cliApp.Version)
for _, r := range api.routes {
_, _ = fmt.Fprintln(w, r)
}
}
// httpRestartHandler - restart API server
func (api *APIServer) httpRestartHandler(w http.ResponseWriter, _ *http.Request) {
api.sendJSONEachRow(w, http.StatusCreated, struct {
Status string `json:"status"`
Operation string `json:"operation"`
}{
Status: "acknowledged",
Operation: "restart",
})
defer func() {
api.restart <- struct{}{}
}()
}
// httpVersionHandler
func (api *APIServer) httpVersionHandler(w http.ResponseWriter, _ *http.Request) {
api.sendJSONEachRow(w, http.StatusOK, struct {
Version string `json:"version"`
}{
Version: api.cliApp.Version,
})
}
// httpKillHandler - kill selected command if it InProgress
func (api *APIServer) httpKillHandler(w http.ResponseWriter, r *http.Request) {
var err error
command, exists := r.URL.Query()["command"]
if exists && len(command) > 0 {
err = status.Current.Cancel(command[0], fmt.Errorf("canceled from API /backup/kill"))
} else {
err = status.Current.Cancel("", fmt.Errorf("canceled from API /backup/kill"))
}
if err != nil {
api.sendJSONEachRow(w, http.StatusInternalServerError, struct {
Status string `json:"status"`
Operation string `json:"operation"`
Error string `json:"error"`
}{
Status: "error",
Operation: "kill",
Error: err.Error(),
})
} else {
api.sendJSONEachRow(w, http.StatusOK, struct {
Status string `json:"status"`
Operation string `json:"operation"`
Command string `json:"command"`
}{
Status: "success",
Operation: "kill",
Command: command[0],
})
}
}
// httpTablesHandler - display list of tables
func (api *APIServer) httpTablesHandler(w http.ResponseWriter, r *http.Request) {
cfg, err := api.ReloadConfig(w, "tables")
if err != nil {
return
}
b := backup.NewBackuper(cfg)
q := r.URL.Query()
var tables []clickhouse.Table
// https://github.com/Altinity/clickhouse-backup/issues/778
if q.Get("remote_backup") != "" {
tables, err = b.GetTablesRemote(context.Background(), q.Get("remote_backup"), q.Get("table"))
} else {
tables, err = b.GetTables(context.Background(), q.Get("table"))
}
if err != nil {
api.writeError(w, http.StatusInternalServerError, "tables", err)
return
}
if r.URL.Path == "/backup/tables/all" {
api.sendJSONEachRow(w, http.StatusOK, tables)
return
}
tables = api.getTablesWithSkip(tables)
api.sendJSONEachRow(w, http.StatusOK, tables)
}
func (api *APIServer) getTablesWithSkip(tables []clickhouse.Table) []clickhouse.Table {
showCounts := 0
for _, t := range tables {
if !t.Skip {
showCounts++
}
}
showTables := make([]clickhouse.Table, showCounts)
showCounts = 0
for _, t := range tables {
if !t.Skip {
showTables[showCounts] = t
showCounts++
}
}
return showTables
}
// httpListHandler - display list of all backups stored locally and remotely, could run in parallel independent of allow_parallel=true
// CREATE TABLE system.backup_list (name String, created DateTime, size Int64, location String, desc String) ENGINE=URL('http://127.0.0.1:7171/backup/list?user=user&pass=pass', JSONEachRow)
// SELECT * FROM system.backup_list
func (api *APIServer) httpListHandler(w http.ResponseWriter, r *http.Request) {
if r.Method == http.MethodHead {
api.sendJSONEachRow(w, http.StatusOK, "")
return
}
type backupJSON struct {
Name string `json:"name"`
Created string `json:"created"`
Size uint64 `json:"size,omitempty"`
Location string `json:"location"`
RequiredBackup string `json:"required"`
Desc string `json:"desc"`
}
backupsJSON := make([]backupJSON, 0)
cfg, err := api.ReloadConfig(w, "list")
if err != nil {
return
}
vars := mux.Vars(r)
where, wherePresent := vars["where"]
fullCommand := "list"
if wherePresent {
fullCommand += " " + where
}
commandId, ctx := status.Current.Start(fullCommand)
defer status.Current.Stop(commandId, err)
if err != nil {
api.writeError(w, http.StatusInternalServerError, "list", err)
return
}
b := backup.NewBackuper(cfg)
if where == "local" || !wherePresent {
var localBackups []backup.LocalBackup
localBackups, _, err = b.GetLocalBackups(ctx, nil)
if err != nil && !os.IsNotExist(err) {
api.writeError(w, http.StatusInternalServerError, "list", err)
return
}
for _, item := range localBackups {
description := item.DataFormat
if item.Broken != "" {
description = item.Broken
}
if item.Tags != "" {
if description != "" {
description += ", "
}
description += item.Tags
}
backupsJSON = append(backupsJSON, backupJSON{
Name: item.BackupName,
Created: item.CreationDate.Format(common.TimeFormat),
Size: item.DataSize + item.MetadataSize,
Location: "local",
RequiredBackup: item.RequiredBackup,
Desc: description,
})
}
api.metrics.NumberBackupsLocal.Set(float64(len(localBackups)))
}
if cfg.General.RemoteStorage != "none" && (where == "remote" || !wherePresent) {
brokenBackups := 0
remoteBackups, err := b.GetRemoteBackups(ctx, true)
if err != nil {
api.writeError(w, http.StatusInternalServerError, "list", err)
return
}
for i, b := range remoteBackups {
description := b.DataFormat
if b.Broken != "" {
description = b.Broken
brokenBackups++
}
if b.Tags != "" {
if description != "" {
description += ", "
}
description += b.Tags
}
fullSize := b.GetFullSize()
backupsJSON = append(backupsJSON, backupJSON{
Name: b.BackupName,
Created: b.CreationDate.Format(common.TimeFormat),
Size: fullSize,
Location: "remote",
RequiredBackup: b.RequiredBackup,
Desc: description,
})
if i == len(remoteBackups)-1 {
api.metrics.LastBackupSizeRemote.Set(float64(fullSize))
}
}
api.metrics.NumberBackupsRemoteBroken.Set(float64(brokenBackups))
api.metrics.NumberBackupsRemote.Set(float64(len(remoteBackups)))
}
api.sendJSONEachRow(w, http.StatusOK, backupsJSON)
}
// httpCreateHandler - create a backup
func (api *APIServer) httpCreateHandler(w http.ResponseWriter, r *http.Request) {
if !api.config.API.AllowParallel && status.Current.InProgress() {
api.log.Info(ErrAPILocked.Error())
api.writeError(w, http.StatusLocked, "create", ErrAPILocked)
return
}
cfg, err := api.ReloadConfig(w, "create")
if err != nil {
return
}
tablePattern := ""
diffFromRemote := ""
partitionsToBackup := make([]string, 0)
backupName := backup.NewBackupName()
schemaOnly := false
createRBAC := false
createConfigs := false
checkPartsColumns := true
fullCommand := "create"
query := r.URL.Query()
if tp, exist := query["table"]; exist {
tablePattern = tp[0]
fullCommand = fmt.Sprintf("%s --tables=\"%s\"", fullCommand, tablePattern)
}
if baseBackup, exists := query["diff-from-remote"]; exists {
diffFromRemote = baseBackup[0]
}
if partitions, exist := query["partitions"]; exist {
partitionsToBackup = append(partitionsToBackup, partitions...)
fullCommand = fmt.Sprintf("%s --partitions=\"%s\"", fullCommand, strings.Join(partitions, "\" --partitions=\""))
}
if schema, exist := query["schema"]; exist {
schemaOnly, _ = strconv.ParseBool(schema[0])
if schemaOnly {
fullCommand = fmt.Sprintf("%s --schema", fullCommand)
}
}
if rbac, exist := query["rbac"]; exist {
createRBAC, _ = strconv.ParseBool(rbac[0])
if createRBAC {
fullCommand = fmt.Sprintf("%s --rbac", fullCommand)
}
}
if configs, exist := query["configs"]; exist {
createConfigs, _ = strconv.ParseBool(configs[0])
if createConfigs {
fullCommand = fmt.Sprintf("%s --configs", fullCommand)
}
}
if partsColumns, exist := query["check_parts_columns"]; exist {
checkPartsColumns, _ = strconv.ParseBool(partsColumns[0])
fullCommand = fmt.Sprintf("%s --check-parts-columns=%v", fullCommand, checkPartsColumns)
}
if name, exist := query["name"]; exist {
backupName = utils.CleanBackupNameRE.ReplaceAllString(name[0], "")
fullCommand = fmt.Sprintf("%s %s", fullCommand, backupName)
}
callback, err := parseCallback(query)
if err != nil {
api.log.Error(err.Error())
api.writeError(w, http.StatusBadRequest, "create", err)
return
}
commandId, _ := status.Current.Start(fullCommand)
go func() {
err, _ := api.metrics.ExecuteWithMetrics("create", 0, func() error {
b := backup.NewBackuper(cfg)
return b.CreateBackup(backupName, diffFromRemote, tablePattern, partitionsToBackup, schemaOnly, createRBAC, false, createConfigs, false, checkPartsColumns, api.clickhouseBackupVersion, commandId)
})
if err != nil {
api.log.Errorf("API /backup/create error: %v", err)
status.Current.Stop(commandId, err)
api.errorCallback(context.Background(), err, callback)
return
}
go func() {
if metricsErr := api.UpdateBackupMetrics(context.Background(), true); metricsErr != nil {
api.log.Errorf("UpdateBackupMetrics return error: %v", metricsErr)
}
}()
status.Current.Stop(commandId, nil)
api.successCallback(context.Background(), callback)
}()
api.sendJSONEachRow(w, http.StatusCreated, struct {
Status string `json:"status"`
Operation string `json:"operation"`
BackupName string `json:"backup_name"`
}{
Status: "acknowledged",
Operation: "create",
BackupName: backupName,
})
}
// httpWatchHandler - run watch command go routine, can't run the same watch command twice
func (api *APIServer) httpWatchHandler(w http.ResponseWriter, r *http.Request) {
if !api.config.API.AllowParallel && status.Current.InProgress() {
api.log.Info(ErrAPILocked.Error())
api.writeError(w, http.StatusLocked, "watch", ErrAPILocked)
return
}
cfg, err := api.ReloadConfig(w, "watch")
if err != nil {
return
}
tablePattern := ""
partitionsToBackup := make([]string, 0)
schemaOnly := false
rbacOnly := false
configsOnly := false
skipCheckPartsColumns := false
watchInterval := ""
fullInterval := ""
watchBackupNameTemplate := ""
fullCommand := "watch"
query := r.URL.Query()
if interval, exist := query["watch_interval"]; exist {
watchInterval = interval[0]
fullCommand = fmt.Sprintf("%s --watch-interval=\"%s\"", fullCommand, watchInterval)
}
if interval, exist := query["full_interval"]; exist {
fullInterval = interval[0]
fullCommand = fmt.Sprintf("%s --full-interval=\"%s\"", fullCommand, fullInterval)
}
if template, exist := query["watch_backup_name_template"]; exist {
watchBackupNameTemplate = template[0]
fullCommand = fmt.Sprintf("%s --watch-backup-name-template=\"%s\"", fullCommand, watchBackupNameTemplate)
}
if tp, exist := query["table"]; exist {
tablePattern = tp[0]
fullCommand = fmt.Sprintf("%s --tables=\"%s\"", fullCommand, tablePattern)
}
if partitions, exist := query["partitions"]; exist {
partitionsToBackup = append(partitionsToBackup, partitions...)
fullCommand = fmt.Sprintf("%s --partitions=\"%s\"", fullCommand, strings.Join(partitions, "\" --partitions=\""))
}
if schema, exist := query["schema"]; exist {
schemaOnly, _ = strconv.ParseBool(schema[0])
if schemaOnly {
fullCommand = fmt.Sprintf("%s --schema", fullCommand)
}
}
if rbac, exist := query["rbac"]; exist {
rbacOnly, _ = strconv.ParseBool(rbac[0])
if rbacOnly {
fullCommand = fmt.Sprintf("%s --rbac", fullCommand)
}
}
if configs, exist := query["configs"]; exist {
configsOnly, _ = strconv.ParseBool(configs[0])
if configsOnly {
fullCommand = fmt.Sprintf("%s --configs", fullCommand)
}
}
if partsColumns, exist := query["skip_check_parts_columns"]; exist {
skipCheckPartsColumns, _ = strconv.ParseBool(partsColumns[0])
if configsOnly {
fullCommand = fmt.Sprintf("%s --skip-check-parts-columns", fullCommand)
}
}
if status.Current.CheckCommandInProgress(fullCommand) {
api.log.Warnf("%s error: %v", fullCommand, ErrAPILocked)
api.writeError(w, http.StatusLocked, "watch", ErrAPILocked)
return
}
commandId, _ := status.Current.Start(fullCommand)
go func() {
b := backup.NewBackuper(cfg)
err := b.Watch(watchInterval, fullInterval, watchBackupNameTemplate, tablePattern, partitionsToBackup, schemaOnly, rbacOnly, configsOnly, skipCheckPartsColumns, api.clickhouseBackupVersion, commandId, api.GetMetrics(), api.cliCtx)
defer status.Current.Stop(commandId, err)
if err != nil {
api.log.Errorf("Watch error: %v", err)
return
}
}()
api.sendJSONEachRow(w, http.StatusCreated, struct {