// GetAllTabletsAccrossCells returns all tablets from known cells.
func GetAllTabletsAccrossCells(ts topo.Server) ([]*topo.TabletInfo, error) {
cells, err := ts.GetKnownCells()
if err != nil {
return nil, err
}
results := make(chan []*topo.TabletInfo)
errors := make(chan error)
for _, cell := range cells {
go func(cell string) {
tablets, err := GetAllTablets(ts, cell)
if err != nil && err != topo.ErrNoNode {
errors <- err
return
}
results <- tablets
}(cell)
}
allTablets := make([]*topo.TabletInfo, 0)
for _ = range cells {
select {
case tablets := <-results:
allTablets = append(allTablets, tablets...)
case err := <-errors:
return nil, err
}
}
return allTablets, nil
}
// GetAllTabletsAcrossCells returns all tablets from known cells.
// If it returns topo.ErrPartialResult, then the list is valid, but partial.
func GetAllTabletsAcrossCells(ctx context.Context, ts topo.Server) ([]*topo.TabletInfo, error) {
cells, err := ts.GetKnownCells(ctx)
if err != nil {
return nil, err
}
results := make([][]*topo.TabletInfo, len(cells))
errors := make([]error, len(cells))
wg := sync.WaitGroup{}
wg.Add(len(cells))
for i, cell := range cells {
go func(i int, cell string) {
results[i], errors[i] = GetAllTablets(ctx, ts, cell)
wg.Done()
}(i, cell)
}
wg.Wait()
err = nil
var allTablets []*topo.TabletInfo
for i := range cells {
if errors[i] == nil {
allTablets = append(allTablets, results[i]...)
} else {
err = topo.ErrPartialResult
}
}
return allTablets, err
}
// CopyTablets will create the tablets in the destination topo
func CopyTablets(fromTS, toTS topo.Server) {
cells, err := fromTS.GetKnownCells()
if err != nil {
log.Fatalf("fromTS.GetKnownCells failed: %v", err)
}
wg := sync.WaitGroup{}
rec := concurrency.AllErrorRecorder{}
for _, cell := range cells {
wg.Add(1)
go func(cell string) {
defer wg.Done()
tabletAliases, err := fromTS.GetTabletsByCell(cell)
if err != nil {
rec.RecordError(err)
} else {
for _, tabletAlias := range tabletAliases {
wg.Add(1)
go func(tabletAlias topo.TabletAlias) {
defer wg.Done()
// read the source tablet
ti, err := fromTS.GetTablet(tabletAlias)
if err != nil {
rec.RecordError(err)
return
}
// try to create the destination
err = toTS.CreateTablet(ti.Tablet)
if err == topo.ErrNodeExists {
// update the destination tablet
log.Warningf("tablet %v already exists, updating it", tabletAlias)
err = toTS.UpdateTabletFields(ti.Alias(), func(t *topo.Tablet) error {
*t = *ti.Tablet
return nil
})
}
if err != nil {
rec.RecordError(err)
return
}
// create the replication paths
// for masters only here
if ti.Type == topo.TYPE_MASTER {
if err = toTS.CreateReplicationPath(ti.Keyspace, ti.Shard, ti.Alias().String()); err != nil && err != topo.ErrNodeExists {
rec.RecordError(err)
}
}
}(tabletAlias)
}
}
}(cell)
}
wg.Wait()
if rec.HasErrors() {
log.Fatalf("copyTablets failed: %v", rec.Error())
}
}
func newRealtimeStats(ts topo.Server) (*realtimeStats, error) {
hc := discovery.NewHealthCheck(*vtctl.HealthCheckTimeout, *vtctl.HealthcheckRetryDelay, *vtctl.HealthCheckTimeout)
tabletStatsCache := &tabletStatsCache{
statuses: make(map[string]map[string]*discovery.TabletStats),
}
hc.SetListener(tabletStatsCache)
r := &realtimeStats{
healthCheck: hc,
tabletStats: tabletStatsCache,
}
// Get the list of all tablets from all cells and monitor the topology for added or removed tablets with a CellTabletsWatcher.
cells, err := ts.GetKnownCells(context.Background())
if err != nil {
return r, fmt.Errorf("error when getting cells: %v", err)
}
var watchers []*discovery.TopologyWatcher
for _, cell := range cells {
watcher := discovery.NewCellTabletsWatcher(ts, hc, cell, *vtctl.HealthCheckTopologyRefresh, discovery.DefaultTopoReadConcurrency)
watchers = append(watchers, watcher)
}
r.cellWatchers = watchers
return r, nil
}
func getLocalCell(ctx context.Context, t *testing.T, ts topo.Server) string {
cells, err := ts.GetKnownCells(ctx)
if err != nil {
t.Fatalf("GetKnownCells: %v", err)
}
if len(cells) < 1 {
t.Fatalf("provided topo.Server doesn't have enough cells (need at least 1): %v", cells)
}
return cells[0]
}
func newKnownCellsCache(ts topo.Server) *VersionedObjectCache {
return NewVersionedObjectCache(func(ctx context.Context) (VersionedObject, error) {
cells, err := ts.GetKnownCells(ctx)
if err != nil {
return nil, err
}
return &KnownCells{
Cells: cells,
}, nil
})
}
// CopyTablets will create the tablets in the destination topo
func CopyTablets(fromTS, toTS topo.Server) {
cells, err := fromTS.GetKnownCells()
if err != nil {
log.Fatalf("fromTS.GetKnownCells: %v", err)
}
wg := sync.WaitGroup{}
rec := concurrency.AllErrorRecorder{}
for _, cell := range cells {
wg.Add(1)
go func(cell string) {
defer wg.Done()
tabletAliases, err := fromTS.GetTabletsByCell(cell)
if err != nil {
rec.RecordError(fmt.Errorf("GetTabletsByCell(%v): %v", cell, err))
} else {
for _, tabletAlias := range tabletAliases {
wg.Add(1)
go func(tabletAlias topo.TabletAlias) {
defer wg.Done()
// read the source tablet
ti, err := fromTS.GetTablet(tabletAlias)
if err != nil {
rec.RecordError(fmt.Errorf("GetTablet(%v): %v", tabletAlias, err))
return
}
// try to create the destination
err = toTS.CreateTablet(ti.Tablet)
if err == topo.ErrNodeExists {
// update the destination tablet
log.Warningf("tablet %v already exists, updating it", tabletAlias)
err = toTS.UpdateTabletFields(ti.Alias, func(t *topo.Tablet) error {
*t = *ti.Tablet
return nil
})
}
if err != nil {
rec.RecordError(fmt.Errorf("CreateTablet(%v): %v", tabletAlias, err))
return
}
}(tabletAlias)
}
}
}(cell)
}
wg.Wait()
if rec.HasErrors() {
log.Fatalf("copyTablets failed: %v", rec.Error())
}
}
func initAPI(ctx context.Context, ts topo.Server, actions *ActionRepository) {
tabletHealthCache := newTabletHealthCache(ts)
// Cells
handleCollection("cells", func(r *http.Request) (interface{}, error) {
if getItemPath(r.URL.Path) != "" {
return nil, errors.New("cells can only be listed, not retrieved")
}
return ts.GetKnownCells(ctx)
})
// Keyspaces
handleCollection("keyspaces", func(r *http.Request) (interface{}, error) {
keyspace := getItemPath(r.URL.Path)
// List all keyspaces.
if keyspace == "" {
return ts.GetKeyspaces(ctx)
}
// Perform an action on a keyspace.
if r.Method == "POST" {
if err := r.ParseForm(); err != nil {
return nil, err
}
action := r.FormValue("action")
if action == "" {
return nil, errors.New("must specify action")
}
return actions.ApplyKeyspaceAction(ctx, action, keyspace, r), nil
}
// Get the keyspace record.
return ts.GetKeyspace(ctx, keyspace)
})
// Shards
handleCollection("shards", func(r *http.Request) (interface{}, error) {
shardPath := getItemPath(r.URL.Path)
if !strings.Contains(shardPath, "/") {
return nil, fmt.Errorf("invalid shard path: %q", shardPath)
}
parts := strings.SplitN(shardPath, "/", 2)
keyspace := parts[0]
shard := parts[1]
// List the shards in a keyspace.
if shard == "" {
return ts.GetShardNames(ctx, keyspace)
}
// Perform an action on a shard.
if r.Method == "POST" {
if err := r.ParseForm(); err != nil {
return nil, err
}
action := r.FormValue("action")
if action == "" {
return nil, errors.New("must specify action")
}
return actions.ApplyShardAction(ctx, action, keyspace, shard, r), nil
}
// Get the shard record.
return ts.GetShard(ctx, keyspace, shard)
})
// Tablets
handleCollection("tablets", func(r *http.Request) (interface{}, error) {
tabletPath := getItemPath(r.URL.Path)
// List tablets based on query params.
if tabletPath == "" {
if err := r.ParseForm(); err != nil {
return nil, err
}
shardRef := r.FormValue("shard")
cell := r.FormValue("cell")
if shardRef != "" {
// Look up by keyspace/shard, and optionally cell.
keyspace, shard, err := topoproto.ParseKeyspaceShard(shardRef)
if err != nil {
return nil, err
}
if cell != "" {
return ts.FindAllTabletAliasesInShardByCell(ctx, keyspace, shard, []string{cell})
}
return ts.FindAllTabletAliasesInShard(ctx, keyspace, shard)
}
// Get all tablets in a cell.
if cell == "" {
return nil, errors.New("cell param required")
}
return ts.GetTabletsByCell(ctx, cell)
}
// Get tablet health.
if parts := strings.Split(tabletPath, "/"); len(parts) == 2 && parts[1] == "health" {
tabletAlias, err := topoproto.ParseTabletAlias(parts[0])
if err != nil {
return nil, err
}
return tabletHealthCache.Get(ctx, tabletAlias)
}
tabletAlias, err := topoproto.ParseTabletAlias(tabletPath)
if err != nil {
return nil, err
}
// Perform an action on a tablet.
if r.Method == "POST" {
if err := r.ParseForm(); err != nil {
return nil, err
}
action := r.FormValue("action")
if action == "" {
return nil, errors.New("must specify action")
}
return actions.ApplyTabletAction(ctx, action, tabletAlias, r), nil
}
// Get the tablet record.
return ts.GetTablet(ctx, tabletAlias)
})
// EndPoints
handleCollection("endpoints", func(r *http.Request) (interface{}, error) {
// We expect cell/keyspace/shard/tabletType.
epPath := getItemPath(r.URL.Path)
parts := strings.Split(epPath, "/")
if len(parts) != 4 {
return nil, fmt.Errorf("invalid cell/keyspace/shard/tabletType: %q", epPath)
}
if parts[3] == "" {
// tabletType is empty, so list the tablet types.
return ts.GetSrvTabletTypesPerShard(ctx, parts[0], parts[1], parts[2])
}
tabletType, err := topoproto.ParseTabletType(parts[3])
if err != nil {
return nil, fmt.Errorf("invalid tablet type %v: %v", parts[3], err)
}
// Get the endpoints object for a specific type.
ep, _, err := ts.GetEndPoints(ctx, parts[0], parts[1], parts[2], tabletType)
return ep, err
})
// Schema Change
http.HandleFunc(apiPrefix+"schema/apply", func(w http.ResponseWriter, r *http.Request) {
req := struct{ Keyspace, SQL string }{}
if err := unmarshalRequest(r, &req); err != nil {
httpErrorf(w, r, "can't unmarshal request: %v", err)
return
}
executor := schemamanager.NewTabletExecutor(
tmclient.NewTabletManagerClient(),
ts)
schemamanager.Run(ctx,
schemamanager.NewUIController(req.SQL, req.Keyspace, w), executor)
})
// VSchema
http.HandleFunc(apiPrefix+"vschema/", func(w http.ResponseWriter, r *http.Request) {
// Save VSchema
if r.Method == "POST" {
vschema, err := ioutil.ReadAll(r.Body)
if err != nil {
httpErrorf(w, r, "can't read request body: %v", err)
return
}
if err := ts.SaveVSchema(ctx, string(vschema)); err != nil {
httpErrorf(w, r, "can't save vschema: %v", err)
}
return
}
// Get VSchema
vschema, err := ts.GetVSchema(ctx)
if err != nil {
httpErrorf(w, r, "can't get vschema: %v", err)
return
}
w.Header().Set("Content-Type", jsonContentType)
w.Write([]byte(vschema))
})
}
func initAPI(ctx context.Context, ts topo.Server, actions *ActionRepository) {
tabletHealthCache := newTabletHealthCache(ts)
// Cells
handleCollection("cells", func(r *http.Request) (interface{}, error) {
if getItemPath(r.URL.Path) != "" {
return nil, errors.New("cells can only be listed, not retrieved")
}
return ts.GetKnownCells(ctx)
})
// Keyspaces
handleCollection("keyspaces", func(r *http.Request) (interface{}, error) {
keyspace := getItemPath(r.URL.Path)
// List all keyspaces.
if keyspace == "" {
return ts.GetKeyspaces(ctx)
}
// Perform an action on a keyspace.
if r.Method == "POST" {
if err := r.ParseForm(); err != nil {
return nil, err
}
action := r.FormValue("action")
if action == "" {
return nil, errors.New("must specify action")
}
return actions.ApplyKeyspaceAction(ctx, action, keyspace, r), nil
}
// Get the keyspace record.
return ts.GetKeyspace(ctx, keyspace)
})
// Shards
handleCollection("shards", func(r *http.Request) (interface{}, error) {
shardPath := getItemPath(r.URL.Path)
if !strings.Contains(shardPath, "/") {
return nil, fmt.Errorf("invalid shard path: %q", shardPath)
}
parts := strings.SplitN(shardPath, "/", 2)
keyspace := parts[0]
shard := parts[1]
// List the shards in a keyspace.
if shard == "" {
return ts.GetShardNames(ctx, keyspace)
}
// Perform an action on a shard.
if r.Method == "POST" {
if err := r.ParseForm(); err != nil {
return nil, err
}
action := r.FormValue("action")
if action == "" {
return nil, errors.New("must specify action")
}
return actions.ApplyShardAction(ctx, action, keyspace, shard, r), nil
}
// Get the shard record.
return ts.GetShard(ctx, keyspace, shard)
})
// Tablets
handleCollection("tablets", func(r *http.Request) (interface{}, error) {
tabletPath := getItemPath(r.URL.Path)
// List tablets based on query params.
if tabletPath == "" {
if err := r.ParseForm(); err != nil {
return nil, err
}
shardRef := r.FormValue("shard")
cell := r.FormValue("cell")
if shardRef != "" {
// Look up by keyspace/shard, and optionally cell.
keyspace, shard, err := topoproto.ParseKeyspaceShard(shardRef)
if err != nil {
return nil, err
}
if cell != "" {
return ts.FindAllTabletAliasesInShardByCell(ctx, keyspace, shard, []string{cell})
}
return ts.FindAllTabletAliasesInShard(ctx, keyspace, shard)
}
// Get all tablets in a cell.
if cell == "" {
return nil, errors.New("cell param required")
}
return ts.GetTabletsByCell(ctx, cell)
}
// Get tablet health.
if parts := strings.Split(tabletPath, "/"); len(parts) == 2 && parts[1] == "health" {
tabletAlias, err := topoproto.ParseTabletAlias(parts[0])
if err != nil {
return nil, err
}
return tabletHealthCache.Get(ctx, tabletAlias)
}
tabletAlias, err := topoproto.ParseTabletAlias(tabletPath)
if err != nil {
return nil, err
}
// Perform an action on a tablet.
if r.Method == "POST" {
if err := r.ParseForm(); err != nil {
return nil, err
}
action := r.FormValue("action")
if action == "" {
return nil, errors.New("must specify action")
}
return actions.ApplyTabletAction(ctx, action, tabletAlias, r), nil
}
// Get the tablet record.
return ts.GetTablet(ctx, tabletAlias)
})
// Schema Change
http.HandleFunc(apiPrefix+"schema/apply", func(w http.ResponseWriter, r *http.Request) {
req := struct{ Keyspace, SQL string }{}
if err := unmarshalRequest(r, &req); err != nil {
httpErrorf(w, r, "can't unmarshal request: %v", err)
return
}
executor := schemamanager.NewTabletExecutor(
tmclient.NewTabletManagerClient(),
ts)
schemamanager.Run(ctx,
schemamanager.NewUIController(req.SQL, req.Keyspace, w), executor)
})
}
func initAPI(ctx context.Context, ts topo.Server, actions *ActionRepository, realtimeStats *realtimeStats) {
tabletHealthCache := newTabletHealthCache(ts)
tmClient := tmclient.NewTabletManagerClient()
// Cells
handleCollection("cells", func(r *http.Request) (interface{}, error) {
if getItemPath(r.URL.Path) != "" {
return nil, errors.New("cells can only be listed, not retrieved")
}
return ts.GetKnownCells(ctx)
})
// Keyspaces
handleCollection("keyspaces", func(r *http.Request) (interface{}, error) {
keyspace := getItemPath(r.URL.Path)
switch r.Method {
case "GET":
// List all keyspaces.
if keyspace == "" {
return ts.GetKeyspaces(ctx)
}
// Get the keyspace record.
k, err := ts.GetKeyspace(ctx, keyspace)
// Pass the embedded proto directly or jsonpb will panic.
return k.Keyspace, err
// Perform an action on a keyspace.
case "POST":
if keyspace == "" {
return nil, errors.New("A POST request needs a keyspace in the URL")
}
if err := r.ParseForm(); err != nil {
return nil, err
}
action := r.FormValue("action")
if action == "" {
return nil, errors.New("A POST request must specify action")
}
return actions.ApplyKeyspaceAction(ctx, action, keyspace, r), nil
default:
return nil, fmt.Errorf("unsupported HTTP method: %v", r.Method)
}
})
// Shards
handleCollection("shards", func(r *http.Request) (interface{}, error) {
shardPath := getItemPath(r.URL.Path)
if !strings.Contains(shardPath, "/") {
return nil, fmt.Errorf("invalid shard path: %q", shardPath)
}
parts := strings.SplitN(shardPath, "/", 2)
keyspace := parts[0]
shard := parts[1]
// List the shards in a keyspace.
if shard == "" {
return ts.GetShardNames(ctx, keyspace)
}
// Perform an action on a shard.
if r.Method == "POST" {
if err := r.ParseForm(); err != nil {
return nil, err
}
action := r.FormValue("action")
if action == "" {
return nil, errors.New("must specify action")
}
return actions.ApplyShardAction(ctx, action, keyspace, shard, r), nil
}
// Get the shard record.
si, err := ts.GetShard(ctx, keyspace, shard)
// Pass the embedded proto directly or jsonpb will panic.
return si.Shard, err
})
// SrvKeyspace
handleCollection("srv_keyspace", func(r *http.Request) (interface{}, error) {
keyspacePath := getItemPath(r.URL.Path)
parts := strings.SplitN(keyspacePath, "/", 2)
// Request was incorrectly formatted.
if len(parts) != 2 {
return nil, fmt.Errorf("invalid srvkeyspace path: %q expected path: /srv_keyspace/<cell>/<keyspace>", keyspacePath)
}
cell := parts[0]
keyspace := parts[1]
if cell == "local" {
if *localCell == "" {
return nil, fmt.Errorf("local cell requested, but not specified. Please set with -cell flag")
}
cell = *localCell
}
// If a keyspace is provided then return the specified srvkeyspace.
if keyspace != "" {
srvKeyspace, err := ts.GetSrvKeyspace(ctx, cell, keyspace)
if err != nil {
return nil, fmt.Errorf("Can't get server keyspace: %v", err)
}
return srvKeyspace, nil
}
// Else return the srvKeyspace from all keyspaces.
srvKeyspaces := make(map[string]interface{})
keyspaceNamesList, err := ts.GetSrvKeyspaceNames(ctx, cell)
if err != nil {
return nil, fmt.Errorf("can't get list of SrvKeyspaceNames for cell %q: GetSrvKeyspaceNames returned: %v", cell, err)
}
for _, keyspaceName := range keyspaceNamesList {
err := addSrvkeyspace(ctx, ts, cell, keyspaceName, srvKeyspaces)
if err != nil {
return nil, err
}
}
return srvKeyspaces, nil
})
// Tablets
handleCollection("tablets", func(r *http.Request) (interface{}, error) {
tabletPath := getItemPath(r.URL.Path)
// List tablets based on query params.
if tabletPath == "" {
if err := r.ParseForm(); err != nil {
return nil, err
}
shardRef := r.FormValue("shard")
cell := r.FormValue("cell")
if shardRef != "" {
// Look up by keyspace/shard, and optionally cell.
keyspace, shard, err := topoproto.ParseKeyspaceShard(shardRef)
if err != nil {
return nil, err
}
if cell != "" {
result, err := ts.FindAllTabletAliasesInShardByCell(ctx, keyspace, shard, []string{cell})
if err != nil && err != topo.ErrPartialResult {
return result, err
}
return result, nil
}
result, err := ts.FindAllTabletAliasesInShard(ctx, keyspace, shard)
if err != nil && err != topo.ErrPartialResult {
return result, err
}
return result, nil
}
// Get all tablets in a cell.
if cell == "" {
return nil, errors.New("cell param required")
}
return ts.GetTabletsByCell(ctx, cell)
}
// Get tablet health.
if parts := strings.Split(tabletPath, "/"); len(parts) == 2 && parts[1] == "health" {
tabletAlias, err := topoproto.ParseTabletAlias(parts[0])
if err != nil {
return nil, err
}
return tabletHealthCache.Get(ctx, tabletAlias)
}
tabletAlias, err := topoproto.ParseTabletAlias(tabletPath)
if err != nil {
return nil, err
}
// Perform an action on a tablet.
if r.Method == "POST" {
if err := r.ParseForm(); err != nil {
return nil, err
}
action := r.FormValue("action")
if action == "" {
return nil, errors.New("must specify action")
}
return actions.ApplyTabletAction(ctx, action, tabletAlias, r), nil
}
// Get the tablet record.
t, err := ts.GetTablet(ctx, tabletAlias)
// Pass the embedded proto directly or jsonpb will panic.
return t.Tablet, err
})
// Healthcheck real time status per (cell, keyspace, tablet type, metric).
handleCollection("tablet_statuses", func(r *http.Request) (interface{}, error) {
targetPath := getItemPath(r.URL.Path)
// Get the heatmap data based on query parameters.
if targetPath == "" {
if err := r.ParseForm(); err != nil {
return nil, err
}
keyspace := r.FormValue("keyspace")
cell := r.FormValue("cell")
tabletType := r.FormValue("type")
_, err := topoproto.ParseTabletType(tabletType)
// Excluding the case where parse fails because all tabletTypes was chosen.
if err != nil && tabletType != "all" {
return nil, fmt.Errorf("invalid tablet type: %v ", err)
}
metric := r.FormValue("metric")
// Setting default values if none was specified in the query params.
if keyspace == "" {
keyspace = "all"
}
if cell == "" {
cell = "all"
}
if tabletType == "" {
tabletType = "all"
}
if metric == "" {
metric = "health"
}
if realtimeStats == nil {
return nil, fmt.Errorf("realtimeStats not initialized")
}
heatmap, err := realtimeStats.heatmapData(keyspace, cell, tabletType, metric)
if err != nil {
return nil, fmt.Errorf("couldn't get heatmap data: %v", err)
}
return heatmap, nil
}
return nil, fmt.Errorf("invalid target path: %q expected path: ?keyspace=<keyspace>&cell=<cell>&type=<type>&metric=<metric>", targetPath)
})
handleCollection("tablet_health", func(r *http.Request) (interface{}, error) {
tabletPath := getItemPath(r.URL.Path)
parts := strings.SplitN(tabletPath, "/", 2)
// Request was incorrectly formatted.
if len(parts) != 2 {
return nil, fmt.Errorf("invalid tablet_health path: %q expected path: /tablet_health/<cell>/<uid>", tabletPath)
}
if realtimeStats == nil {
return nil, fmt.Errorf("realtimeStats not initialized")
}
cell := parts[0]
uidStr := parts[1]
uid, err := topoproto.ParseUID(uidStr)
if err != nil {
return nil, fmt.Errorf("incorrect uid: %v", err)
}
tabletAlias := topodatapb.TabletAlias{
Cell: cell,
Uid: uid,
}
tabletStat, err := realtimeStats.tabletStats(&tabletAlias)
if err != nil {
return nil, fmt.Errorf("could not get tabletStats: %v", err)
}
return tabletStat, nil
})
handleCollection("topology_info", func(r *http.Request) (interface{}, error) {
targetPath := getItemPath(r.URL.Path)
// Retrieving topology information (keyspaces, cells, and types) based on query params.
if targetPath == "" {
if err := r.ParseForm(); err != nil {
return nil, err
}
keyspace := r.FormValue("keyspace")
cell := r.FormValue("cell")
// Setting default values if none was specified in the query params.
if keyspace == "" {
keyspace = "all"
}
if cell == "" {
cell = "all"
}
if realtimeStats == nil {
return nil, fmt.Errorf("realtimeStats not initialized")
}
return realtimeStats.topologyInfo(keyspace, cell), nil
}
return nil, fmt.Errorf("invalid target path: %q expected path: ?keyspace=<keyspace>&cell=<cell>", targetPath)
})
// Vtctl Command
http.HandleFunc(apiPrefix+"vtctl/", func(w http.ResponseWriter, r *http.Request) {
if err := acl.CheckAccessHTTP(r, acl.ADMIN); err != nil {
httpErrorf(w, r, "Access denied")
return
}
var args []string
resp := struct {
Error string
Output string
}{}
if err := unmarshalRequest(r, &args); err != nil {
httpErrorf(w, r, "can't unmarshal request: %v", err)
return
}
logstream := logutil.NewMemoryLogger()
wr := wrangler.New(logstream, ts, tmClient)
// TODO(enisoc): Context for run command should be request-scoped.
err := vtctl.RunCommand(ctx, wr, args)
if err != nil {
resp.Error = err.Error()
}
resp.Output = logstream.String()
data, err := json.MarshalIndent(resp, "", " ")
if err != nil {
httpErrorf(w, r, "json error: %v", err)
return
}
w.Header().Set("Content-Type", jsonContentType)
w.Write(data)
})
// Schema Change
http.HandleFunc(apiPrefix+"schema/apply", func(w http.ResponseWriter, r *http.Request) {
if err := acl.CheckAccessHTTP(r, acl.ADMIN); err != nil {
httpErrorf(w, r, "Access denied")
return
}
req := struct {
Keyspace, SQL string
SlaveTimeoutSeconds int
}{}
if err := unmarshalRequest(r, &req); err != nil {
httpErrorf(w, r, "can't unmarshal request: %v", err)
return
}
if req.SlaveTimeoutSeconds <= 0 {
req.SlaveTimeoutSeconds = 10
}
logger := logutil.NewCallbackLogger(func(ev *logutilpb.Event) {
w.Write([]byte(logutil.EventString(ev)))
})
wr := wrangler.New(logger, ts, tmClient)
executor := schemamanager.NewTabletExecutor(
wr, time.Duration(req.SlaveTimeoutSeconds)*time.Second)
schemamanager.Run(ctx,
schemamanager.NewUIController(req.SQL, req.Keyspace, w), executor)
})
}
func initAPI(ctx context.Context, ts topo.Server) {
// Get Cells
handleGet("cells", func(r *http.Request) (interface{}, error) {
if getItemPath(r.URL.Path) != "" {
return nil, errors.New("cells can only be listed, not retrieved")
}
return ts.GetKnownCells(ctx)
})
// Get Keyspaces
handleGet("keyspaces", func(r *http.Request) (interface{}, error) {
keyspace := getItemPath(r.URL.Path)
if keyspace == "" {
return ts.GetKeyspaces(ctx)
}
return ts.GetKeyspace(ctx, keyspace)
})
// Get Shards
handleGet("shards", func(r *http.Request) (interface{}, error) {
shardPath := getItemPath(r.URL.Path)
if !strings.Contains(shardPath, "/") {
return nil, fmt.Errorf("invalid shard path: %q", shardPath)
}
parts := strings.SplitN(shardPath, "/", 2)
if parts[1] == "" {
// It's just a keyspace. List the shards.
return ts.GetShardNames(ctx, parts[0])
}
// It's a keyspace/shard reference.
return ts.GetShard(ctx, parts[0], parts[1])
})
// Get Tablets
handleGet("tablets", func(r *http.Request) (interface{}, error) {
tabletPath := getItemPath(r.URL.Path)
if tabletPath == "" {
// List tablets based on query params.
if err := r.ParseForm(); err != nil {
return nil, err
}
shardRef := r.FormValue("shard")
cell := r.FormValue("cell")
if shardRef != "" {
// Look up by keyspace/shard, and optionally cell.
keyspace, shard, err := topo.ParseKeyspaceShardString(shardRef)
if err != nil {
return nil, err
}
if cell != "" {
return topo.FindAllTabletAliasesInShardByCell(ctx, ts, keyspace, shard, []string{cell})
}
return topo.FindAllTabletAliasesInShard(ctx, ts, keyspace, shard)
}
// Get all tablets in a cell.
if cell == "" {
return nil, errors.New("cell param required")
}
return ts.GetTabletsByCell(ctx, cell)
}
// Get a specific tablet.
tabletAlias, err := topo.ParseTabletAliasString(tabletPath)
if err != nil {
return nil, err
}
return ts.GetTablet(ctx, tabletAlias)
})
// Get EndPoints
handleGet("endpoints", func(r *http.Request) (interface{}, error) {
// We expect cell/keyspace/shard/tabletType.
epPath := getItemPath(r.URL.Path)
parts := strings.Split(epPath, "/")
if len(parts) != 4 {
return nil, fmt.Errorf("invalid cell/keyspace/shard/tabletType: %q", epPath)
}
if parts[3] == "" {
// tabletType is empty, so list the tablet types.
return ts.GetSrvTabletTypesPerShard(ctx, parts[0], parts[1], parts[2])
}
// Get the endpoints object for a specific type.
ep, _, err := ts.GetEndPoints(ctx, parts[0], parts[1], parts[2], topo.TabletType(parts[3]))
return ep, err
})
}
func initAPI(ctx context.Context, ts topo.Server, actions *ActionRepository) {
tabletHealthCache := newTabletHealthCache(ts)
tmClient := tmclient.NewTabletManagerClient()
// Cells
handleCollection("cells", func(r *http.Request) (interface{}, error) {
if getItemPath(r.URL.Path) != "" {
return nil, errors.New("cells can only be listed, not retrieved")
}
return ts.GetKnownCells(ctx)
})
// Keyspaces
handleCollection("keyspaces", func(r *http.Request) (interface{}, error) {
keyspace := getItemPath(r.URL.Path)
// List all keyspaces.
if keyspace == "" {
return ts.GetKeyspaces(ctx)
}
// Perform an action on a keyspace.
if r.Method == "POST" {
if err := r.ParseForm(); err != nil {
return nil, err
}
action := r.FormValue("action")
if action == "" {
return nil, errors.New("must specify action")
}
return actions.ApplyKeyspaceAction(ctx, action, keyspace, r), nil
}
// Get the keyspace record.
return ts.GetKeyspace(ctx, keyspace)
})
// Shards
handleCollection("shards", func(r *http.Request) (interface{}, error) {
shardPath := getItemPath(r.URL.Path)
if !strings.Contains(shardPath, "/") {
return nil, fmt.Errorf("invalid shard path: %q", shardPath)
}
parts := strings.SplitN(shardPath, "/", 2)
keyspace := parts[0]
shard := parts[1]
// List the shards in a keyspace.
if shard == "" {
return ts.GetShardNames(ctx, keyspace)
}
// Perform an action on a shard.
if r.Method == "POST" {
if err := r.ParseForm(); err != nil {
return nil, err
}
action := r.FormValue("action")
if action == "" {
return nil, errors.New("must specify action")
}
return actions.ApplyShardAction(ctx, action, keyspace, shard, r), nil
}
// Get the shard record.
return ts.GetShard(ctx, keyspace, shard)
})
//SrvKeyspace
handleCollection("srv_keyspace", func(r *http.Request) (interface{}, error) {
keyspacePath := getItemPath(r.URL.Path)
parts := strings.SplitN(keyspacePath, "/", 2)
//request was incorrectly formatted
if len(parts) != 2 {
return nil, fmt.Errorf("invalid srvkeyspace path: %q expected path: /srv_keyspace/<cell>/<keyspace>", keyspacePath)
}
cell := parts[0]
keyspace := parts[1]
if cell == "local" {
if *localCell == "" {
return nil, fmt.Errorf("local cell requested, but not specified. Please set with -cell flag")
}
cell = *localCell
}
//If a keyspace is provided then return the specified srvkeyspace
if keyspace != "" {
srvKeyspace, err := ts.GetSrvKeyspace(ctx, cell, keyspace)
if err != nil {
return nil, fmt.Errorf("Can't get server keyspace: %v", err)
}
return srvKeyspace, nil
}
//Else return the srvKeyspace from all keyspaces
srvKeyspaces := make(map[string]interface{})
keyspaceNamesList, err := ts.GetSrvKeyspaceNames(ctx, cell)
if err != nil {
return nil, fmt.Errorf("can't get list of SrvKeyspaceNames for cell %q: GetSrvKeyspaceNames returned: %v", cell, err)
}
for _, keyspaceName := range keyspaceNamesList {
err := addSrvkeyspace(ctx, ts, cell, keyspaceName, srvKeyspaces)
if err != nil {
return nil, err
}
}
return srvKeyspaces, nil
})
// Tablets
handleCollection("tablets", func(r *http.Request) (interface{}, error) {
tabletPath := getItemPath(r.URL.Path)
// List tablets based on query params.
if tabletPath == "" {
if err := r.ParseForm(); err != nil {
return nil, err
}
shardRef := r.FormValue("shard")
cell := r.FormValue("cell")
if shardRef != "" {
// Look up by keyspace/shard, and optionally cell.
keyspace, shard, err := topoproto.ParseKeyspaceShard(shardRef)
if err != nil {
return nil, err
}
if cell != "" {
return ts.FindAllTabletAliasesInShardByCell(ctx, keyspace, shard, []string{cell})
}
return ts.FindAllTabletAliasesInShard(ctx, keyspace, shard)
}
// Get all tablets in a cell.
if cell == "" {
return nil, errors.New("cell param required")
}
return ts.GetTabletsByCell(ctx, cell)
}
// Get tablet health.
if parts := strings.Split(tabletPath, "/"); len(parts) == 2 && parts[1] == "health" {
tabletAlias, err := topoproto.ParseTabletAlias(parts[0])
if err != nil {
return nil, err
}
return tabletHealthCache.Get(ctx, tabletAlias)
}
tabletAlias, err := topoproto.ParseTabletAlias(tabletPath)
if err != nil {
return nil, err
}
// Perform an action on a tablet.
if r.Method == "POST" {
if err := r.ParseForm(); err != nil {
return nil, err
}
action := r.FormValue("action")
if action == "" {
return nil, errors.New("must specify action")
}
return actions.ApplyTabletAction(ctx, action, tabletAlias, r), nil
}
// Get the tablet record.
return ts.GetTablet(ctx, tabletAlias)
})
// Schema Change
http.HandleFunc(apiPrefix+"schema/apply", func(w http.ResponseWriter, r *http.Request) {
req := struct {
Keyspace, SQL string
SlaveTimeoutSeconds int
}{}
if err := unmarshalRequest(r, &req); err != nil {
httpErrorf(w, r, "can't unmarshal request: %v", err)
return
}
if req.SlaveTimeoutSeconds <= 0 {
req.SlaveTimeoutSeconds = 10
}
logger := logutil.NewCallbackLogger(func(ev *logutilpb.Event) {
w.Write([]byte(logutil.EventString(ev)))
})
wr := wrangler.New(logger, ts, tmClient)
executor := schemamanager.NewTabletExecutor(
wr, time.Duration(req.SlaveTimeoutSeconds)*time.Second)
schemamanager.Run(ctx,
schemamanager.NewUIController(req.SQL, req.Keyspace, w), executor)
})
}
func initAPI(ctx context.Context, ts topo.Server, actions *ActionRepository) {
tabletHealthCache := newTabletHealthCache(ts)
// Cells
handleCollection("cells", func(r *http.Request) (interface{}, error) {
if getItemPath(r.URL.Path) != "" {
return nil, errors.New("cells can only be listed, not retrieved")
}
return ts.GetKnownCells(ctx)
})
// Keyspaces
handleCollection("keyspaces", func(r *http.Request) (interface{}, error) {
keyspace := getItemPath(r.URL.Path)
// List all keyspaces.
if keyspace == "" {
return ts.GetKeyspaces(ctx)
}
// Perform an action on a keyspace.
if r.Method == "POST" {
if err := r.ParseForm(); err != nil {
return nil, err
}
action := r.FormValue("action")
if action == "" {
return nil, errors.New("must specify action")
}
return actions.ApplyKeyspaceAction(ctx, action, keyspace, r), nil
}
// Get the keyspace record.
return ts.GetKeyspace(ctx, keyspace)
})
// Shards
handleCollection("shards", func(r *http.Request) (interface{}, error) {
shardPath := getItemPath(r.URL.Path)
if !strings.Contains(shardPath, "/") {
return nil, fmt.Errorf("invalid shard path: %q", shardPath)
}
parts := strings.SplitN(shardPath, "/", 2)
keyspace := parts[0]
shard := parts[1]
// List the shards in a keyspace.
if shard == "" {
return ts.GetShardNames(ctx, keyspace)
}
// Perform an action on a shard.
if r.Method == "POST" {
if err := r.ParseForm(); err != nil {
return nil, err
}
action := r.FormValue("action")
if action == "" {
return nil, errors.New("must specify action")
}
return actions.ApplyShardAction(ctx, action, keyspace, shard, r), nil
}
// Get the shard record.
return ts.GetShard(ctx, keyspace, shard)
})
// Tablets
handleCollection("tablets", func(r *http.Request) (interface{}, error) {
tabletPath := getItemPath(r.URL.Path)
// List tablets based on query params.
if tabletPath == "" {
if err := r.ParseForm(); err != nil {
return nil, err
}
shardRef := r.FormValue("shard")
cell := r.FormValue("cell")
if shardRef != "" {
// Look up by keyspace/shard, and optionally cell.
keyspace, shard, err := topo.ParseKeyspaceShardString(shardRef)
if err != nil {
return nil, err
}
if cell != "" {
return topo.FindAllTabletAliasesInShardByCell(ctx, ts, keyspace, shard, []string{cell})
}
return topo.FindAllTabletAliasesInShard(ctx, ts, keyspace, shard)
}
// Get all tablets in a cell.
if cell == "" {
return nil, errors.New("cell param required")
}
return ts.GetTabletsByCell(ctx, cell)
}
// Get tablet health.
if parts := strings.Split(tabletPath, "/"); len(parts) == 2 && parts[1] == "health" {
tabletAlias, err := topo.ParseTabletAliasString(parts[0])
if err != nil {
return nil, err
}
return tabletHealthCache.Get(ctx, tabletAlias)
}
tabletAlias, err := topo.ParseTabletAliasString(tabletPath)
if err != nil {
return nil, err
}
// Perform an action on a tablet.
if r.Method == "POST" {
if err := r.ParseForm(); err != nil {
return nil, err
}
action := r.FormValue("action")
if action == "" {
return nil, errors.New("must specify action")
}
return actions.ApplyTabletAction(ctx, action, tabletAlias, r), nil
}
// Get the tablet record.
return ts.GetTablet(ctx, tabletAlias)
})
// EndPoints
handleCollection("endpoints", func(r *http.Request) (interface{}, error) {
// We expect cell/keyspace/shard/tabletType.
epPath := getItemPath(r.URL.Path)
parts := strings.Split(epPath, "/")
if len(parts) != 4 {
return nil, fmt.Errorf("invalid cell/keyspace/shard/tabletType: %q", epPath)
}
if parts[3] == "" {
// tabletType is empty, so list the tablet types.
return ts.GetSrvTabletTypesPerShard(ctx, parts[0], parts[1], parts[2])
}
// Get the endpoints object for a specific type.
ep, _, err := ts.GetEndPoints(ctx, parts[0], parts[1], parts[2], topo.TabletType(parts[3]))
return ep, err
})
}
// RebuildVSchema rebuilds the SrvVSchema for the provided cell list
// (or all cells if cell list is empty).
func RebuildVSchema(ctx context.Context, log logutil.Logger, ts topo.Server, cells []string) error {
// get the actual list of cells
if len(cells) == 0 {
var err error
cells, err = ts.GetKnownCells(ctx)
if err != nil {
return fmt.Errorf("GetKnownCells failed: %v", err)
}
}
// get the keyspaces
keyspaces, err := ts.GetKeyspaces(ctx)
if err != nil {
return fmt.Errorf("GetKeyspaces failed: %v", err)
}
// build the SrvVSchema in parallel, protected by mu
wg := sync.WaitGroup{}
mu := sync.Mutex{}
var finalErr error
srvVSchema := &vschemapb.SrvVSchema{
Keyspaces: map[string]*vschemapb.Keyspace{},
}
for _, keyspace := range keyspaces {
wg.Add(1)
go func(keyspace string) {
defer wg.Done()
k, err := ts.GetVSchema(ctx, keyspace)
if err == topo.ErrNoNode {
err = nil
k = &vschemapb.Keyspace{}
}
mu.Lock()
defer mu.Unlock()
if err != nil {
log.Errorf("GetVSchema(%v) failed: %v", keyspace, err)
finalErr = err
return
}
srvVSchema.Keyspaces[keyspace] = k
}(keyspace)
}
wg.Wait()
if finalErr != nil {
return finalErr
}
// now save the SrvVSchema in all cells in parallel
for _, cell := range cells {
wg.Add(1)
go func(cell string) {
defer wg.Done()
if err := ts.UpdateSrvVSchema(ctx, cell, srvVSchema); err != nil {
log.Errorf("UpdateSrvVSchema(%v) failed: %v", cell, err)
mu.Lock()
finalErr = err
mu.Unlock()
}
}(cell)
}
wg.Wait()
return finalErr
}