// GetTabletsByCell implements topo.Server.
func (s *Server) GetTabletsByCell(ctx context.Context, cellName string) ([]topo.TabletAlias, error) {
cell, err := s.getCell(cellName)
if err != nil {
return nil, err
}
resp, err := cell.Get(tabletsDirPath, false /* sort */, false /* recursive */)
if err != nil {
return nil, convertError(err)
}
nodes, err := getNodeNames(resp)
if err != nil {
return nil, err
}
tablets := make([]topo.TabletAlias, 0, len(nodes))
for _, node := range nodes {
tabletAlias, err := topo.ParseTabletAliasString(node)
if err != nil {
return nil, err
}
tablets = append(tablets, tabletAlias)
}
return tablets, nil
}
// actionPathToTabletAlias parses an actionPath back
// zkActionPath is /zk/<cell>/vt/tablets/<uid>/action/<number>
func actionPathToTabletAlias(actionPath string) (topo.TabletAlias, error) {
pathParts := strings.Split(actionPath, "/")
if len(pathParts) != 8 || pathParts[0] != "" || pathParts[1] != "zk" || pathParts[3] != "vt" || pathParts[4] != "tablets" || pathParts[6] != "action" {
return topo.TabletAlias{}, fmt.Errorf("invalid action path: %v", actionPath)
}
return topo.ParseTabletAliasString(pathParts[2] + "-" + pathParts[5])
}
// handleExplorerRedirect returns the redirect target URL.
func handleExplorerRedirect(r *http.Request) (string, error) {
keyspace := r.FormValue("keyspace")
shard := r.FormValue("shard")
cell := r.FormValue("cell")
switch r.FormValue("type") {
case "keyspace":
if keyspace == "" {
return "", errors.New("keyspace is required for this redirect")
}
return explorer.GetKeyspacePath(keyspace), nil
case "shard":
if keyspace == "" || shard == "" {
return "", errors.New("keyspace and shard are required for this redirect")
}
return explorer.GetShardPath(keyspace, shard), nil
case "srv_keyspace":
if keyspace == "" || cell == "" {
return "", errors.New("keyspace and cell are required for this redirect")
}
return explorer.GetSrvKeyspacePath(cell, keyspace), nil
case "srv_shard":
if keyspace == "" || shard == "" || cell == "" {
return "", errors.New("keyspace, shard, and cell are required for this redirect")
}
return explorer.GetSrvShardPath(cell, keyspace, shard), nil
case "srv_type":
tabletType := r.FormValue("tablet_type")
if keyspace == "" || shard == "" || cell == "" || tabletType == "" {
return "", errors.New("keyspace, shard, cell, and tablet_type are required for this redirect")
}
tt, err := topo.ParseTabletType(tabletType)
if err != nil {
return "", fmt.Errorf("cannot parse tablet type %v: %v", tabletType, err)
}
return explorer.GetSrvTypePath(cell, keyspace, shard, tt), nil
case "tablet":
alias := r.FormValue("alias")
if alias == "" {
return "", errors.New("alias is required for this redirect")
}
tabletAlias, err := topo.ParseTabletAliasString(alias)
if err != nil {
return "", fmt.Errorf("bad tablet alias %q: %v", alias, err)
}
return explorer.GetTabletPath(tabletAlias), nil
case "replication":
if keyspace == "" || shard == "" || cell == "" {
return "", errors.New("keyspace, shard, and cell are required for this redirect")
}
return explorer.GetReplicationSlaves(cell, keyspace, shard), nil
default:
return "", errors.New("bad redirect type")
}
}
// FIXME(alainjobart) remove after migration
func BackfillAlias(zkPath string, alias *topo.TabletAlias) error {
if alias.IsZero() && zkPath != "" {
zkPathParts := strings.Split(zkPath, "/")
if len(zkPathParts) != 6 || zkPathParts[0] != "" || zkPathParts[1] != "zk" || zkPathParts[3] != "vt" || zkPathParts[4] != "tablets" {
return fmt.Errorf("Invalid tablet path: %v", zkPath)
}
a, err := topo.ParseTabletAliasString(zkPathParts[2] + "-" + zkPathParts[5])
if err != nil {
return err
}
*alias = a
}
return nil
}
// tabletParamToTabletAlias takes either an old style ZK tablet path or a
// new style tablet alias as a string, and returns a TabletAlias.
func tabletParamToTabletAlias(param string) topo.TabletAlias {
if param[0] == '/' {
// old zookeeper path, convert to new-style string tablet alias
zkPathParts := strings.Split(param, "/")
if len(zkPathParts) != 6 || zkPathParts[0] != "" || zkPathParts[1] != "zk" || zkPathParts[3] != "vt" || zkPathParts[4] != "tablets" {
log.Fatalf("Invalid tablet path: %v", param)
}
param = zkPathParts[2] + "-" + zkPathParts[5]
}
result, err := topo.ParseTabletAliasString(param)
if err != nil {
log.Fatalf("Invalid tablet alias %v: %v", param, err)
}
return result
}
func commandVtTabletStreamHealth(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
count := subFlags.Int("count", 1, "number of responses to wait for")
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vttablet client")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 1 {
return fmt.Errorf("The <tablet alias> argument is required for the VtTabletStreamHealth command.")
}
tabletAlias, err := topo.ParseTabletAliasString(subFlags.Arg(0))
if err != nil {
return err
}
tabletInfo, err := wr.TopoServer().GetTablet(ctx, tabletAlias)
if err != nil {
return err
}
ep, err := tabletInfo.EndPoint()
if err != nil {
return fmt.Errorf("cannot get EndPoint from tablet record: %v", err)
}
// pass in a non-UNKNOWN tablet type to not use sessionId
conn, err := tabletconn.GetDialer()(ctx, ep, "", "", pb.TabletType_MASTER, *connectTimeout)
if err != nil {
return fmt.Errorf("cannot connect to tablet %v: %v", tabletAlias, err)
}
stream, errFunc, err := conn.StreamHealth(ctx)
if err != nil {
return err
}
for i := 0; i < *count; i++ {
shr, ok := <-stream
if !ok {
return fmt.Errorf("stream ended early: %v", errFunc())
}
data, err := json.Marshal(shr)
if err != nil {
wr.Logger().Errorf("cannot json-marshal structure: %v", err)
} else {
wr.Logger().Printf("%v\n", string(data))
}
}
return nil
}
func commandReparentTablet(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
if *disableActiveReparents {
return fmt.Errorf("active reparent actions disable in this cluster")
}
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 1 {
return fmt.Errorf("action ReparentTablet requires <tablet alias>")
}
tabletAlias, err := topo.ParseTabletAliasString(subFlags.Arg(0))
if err != nil {
return err
}
return wr.ReparentTablet(ctx, tabletAlias)
}
func commandVtTabletBegin(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
keyspace := subFlags.String("keyspace", "", "keyspace the tablet belongs to")
shard := subFlags.String("shard", "", "shard the tablet belongs to")
tabletType := subFlags.String("tablet_type", "unknown", "tablet type we expect from the tablet (use unknown to use sessionId)")
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vttablet client")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 1 {
return fmt.Errorf("the <tablet_alias> argument is required for the VtTabletBegin command")
}
tt, err := topo.ParseTabletType(*tabletType)
if err != nil {
return err
}
tabletAlias, err := topo.ParseTabletAliasString(subFlags.Arg(0))
if err != nil {
return err
}
tabletInfo, err := wr.TopoServer().GetTablet(ctx, tabletAlias)
if err != nil {
return err
}
ep, err := topo.TabletEndPoint(tabletInfo.Tablet)
if err != nil {
return fmt.Errorf("cannot get EndPoint from tablet record: %v", err)
}
conn, err := tabletconn.GetDialer()(ctx, ep, *keyspace, *shard, tt, *connectTimeout)
if err != nil {
return fmt.Errorf("cannot connect to tablet %v: %v", tabletAlias, err)
}
defer conn.Close()
transactionID, err := conn.Begin(ctx)
if err != nil {
return fmt.Errorf("Begin failed: %v", err)
}
result := map[string]int64{
"transaction_id": transactionID,
}
return printJSON(wr, result)
}
func commandVtTabletExecute(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
transactionID := subFlags.Int("transaction_id", 0, "transaction id to use, if inside a transaction.")
bindVariables := newBindvars(subFlags)
keyspace := subFlags.String("keyspace", "", "keyspace the tablet belongs to")
shard := subFlags.String("shard", "", "shard the tablet belongs to")
tabletType := subFlags.String("tablet_type", "unknown", "tablet type we expect from the tablet (use unknown to use sessionId)")
connectTimeout := subFlags.Duration("connect_timeout", 30*time.Second, "Connection timeout for vttablet client")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 2 {
return fmt.Errorf("the <tablet_alis> and <sql> arguments are required for the VtTabletExecute command")
}
tt, err := parseTabletType3(*tabletType)
if err != nil {
return err
}
tabletAlias, err := topo.ParseTabletAliasString(subFlags.Arg(0))
if err != nil {
return err
}
tabletInfo, err := wr.TopoServer().GetTablet(ctx, tabletAlias)
if err != nil {
return err
}
ep, err := tabletInfo.EndPoint()
if err != nil {
return fmt.Errorf("cannot get EndPoint from tablet record: %v", err)
}
conn, err := tabletconn.GetDialer()(ctx, ep, *keyspace, *shard, tt, *connectTimeout)
if err != nil {
return fmt.Errorf("cannot connect to tablet %v: %v", tabletAlias, err)
}
defer conn.Close()
qr, err := conn.Execute(ctx, subFlags.Arg(1), *bindVariables, int64(*transactionID))
if err != nil {
return fmt.Errorf("Execute failed: %v", err)
}
wr.Logger().Printf("%v\n", jscfg.ToJSON(qr))
return nil
}
func commandDemoteMaster(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
if *disableActiveReparents {
return fmt.Errorf("active reparent actions disable in this cluster")
}
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 1 {
return fmt.Errorf("action DemoteMaster requires <tablet alias>")
}
tabletAlias, err := topo.ParseTabletAliasString(subFlags.Arg(0))
if err != nil {
return err
}
tabletInfo, err := wr.TopoServer().GetTablet(ctx, tabletAlias)
if err != nil {
return err
}
_, err = wr.TabletManagerClient().DemoteMaster(ctx, tabletInfo)
return err
}
func commandEmergencyReparentShard(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
if *disableActiveReparents {
return fmt.Errorf("active reparent actions disable in this cluster")
}
waitSlaveTimeout := subFlags.Duration("wait_slave_timeout", 30*time.Second, "time to wait for slaves to catch up in reparenting")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 2 {
return fmt.Errorf("action EmergencyReparentShard requires <keyspace/shard> <tablet alias>")
}
keyspace, shard, err := topo.ParseKeyspaceShardString(subFlags.Arg(0))
if err != nil {
return err
}
tabletAlias, err := topo.ParseTabletAliasString(subFlags.Arg(1))
if err != nil {
return err
}
return wr.EmergencyReparentShard(ctx, keyspace, shard, tabletAlias, *waitSlaveTimeout)
}
func commandInitShardMaster(ctx context.Context, wr *wrangler.Wrangler, subFlags *flag.FlagSet, args []string) error {
if *disableActiveReparents {
return fmt.Errorf("active reparent actions disable in this cluster")
}
force := subFlags.Bool("force", false, "will force the reparent even if the provided tablet is not a master or the shard master")
waitSlaveTimeout := subFlags.Duration("wait_slave_timeout", 30*time.Second, "time to wait for slaves to catch up in reparenting")
if err := subFlags.Parse(args); err != nil {
return err
}
if subFlags.NArg() != 2 {
return fmt.Errorf("action InitShardMaster requires <keyspace/shard> <tablet alias>")
}
keyspace, shard, err := topo.ParseKeyspaceShardString(subFlags.Arg(0))
if err != nil {
return err
}
tabletAlias, err := topo.ParseTabletAliasString(subFlags.Arg(1))
if err != nil {
return err
}
return wr.InitShardMaster(ctx, keyspace, shard, tabletAlias, *force, *waitSlaveTimeout)
}
func (zkts *Server) GetReplicationPaths(keyspace, shard, repPath string) ([]topo.TabletAlias, error) {
replicationPath := path.Join(globalKeyspacesPath, keyspace, "shards", shard, repPath)
children, _, err := zkts.zconn.Children(replicationPath)
if err != nil {
if zookeeper.IsError(err, zookeeper.ZNONODE) {
err = topo.ErrNoNode
}
return nil, err
}
result := make([]topo.TabletAlias, 0, len(children))
for _, child := range children {
// 'action' and 'actionlog' can only be present at the toplevel
if (repPath == "" || repPath == "/") && (child == "action" || child == "actionlog") {
continue
}
alias, err := topo.ParseTabletAliasString(child)
if err != nil {
return nil, err
}
result = append(result, alias)
}
return result, nil
}
func main() {
flag.Parse()
servenv.Init()
defer servenv.Close()
templateLoader = NewTemplateLoader(*templateDir, dummyTemplate, *debug)
ts = topo.GetServer()
defer topo.CloseServers()
wr := wrangler.New(logutil.NewConsoleLogger(), ts, 30*time.Second, 30*time.Second)
actionRepo = NewActionRepository(ts)
// keyspace actions
actionRepo.RegisterKeyspaceAction("ValidateKeyspace",
func(wr *wrangler.Wrangler, keyspace string, r *http.Request) (string, error) {
return "", wr.ValidateKeyspace(keyspace, false)
})
actionRepo.RegisterKeyspaceAction("ValidateSchemaKeyspace",
func(wr *wrangler.Wrangler, keyspace string, r *http.Request) (string, error) {
return "", wr.ValidateSchemaKeyspace(keyspace, nil, false)
})
actionRepo.RegisterKeyspaceAction("ValidateVersionKeyspace",
func(wr *wrangler.Wrangler, keyspace string, r *http.Request) (string, error) {
return "", wr.ValidateVersionKeyspace(keyspace)
})
actionRepo.RegisterKeyspaceAction("ValidatePermissionsKeyspace",
func(wr *wrangler.Wrangler, keyspace string, r *http.Request) (string, error) {
return "", wr.ValidatePermissionsKeyspace(keyspace)
})
// shard actions
actionRepo.RegisterShardAction("ValidateShard",
func(wr *wrangler.Wrangler, keyspace, shard string, r *http.Request) (string, error) {
return "", wr.ValidateShard(keyspace, shard, false)
})
actionRepo.RegisterShardAction("ValidateSchemaShard",
func(wr *wrangler.Wrangler, keyspace, shard string, r *http.Request) (string, error) {
return "", wr.ValidateSchemaShard(keyspace, shard, nil, false)
})
actionRepo.RegisterShardAction("ValidateVersionShard",
func(wr *wrangler.Wrangler, keyspace, shard string, r *http.Request) (string, error) {
return "", wr.ValidateVersionShard(keyspace, shard)
})
actionRepo.RegisterShardAction("ValidatePermissionsShard",
func(wr *wrangler.Wrangler, keyspace, shard string, r *http.Request) (string, error) {
return "", wr.ValidatePermissionsShard(keyspace, shard)
})
// tablet actions
actionRepo.RegisterTabletAction("RpcPing", "",
func(wr *wrangler.Wrangler, tabletAlias topo.TabletAlias, r *http.Request) (string, error) {
return "", wr.ActionInitiator().RpcPing(tabletAlias, 10*time.Second)
})
actionRepo.RegisterTabletAction("ScrapTablet", acl.ADMIN,
func(wr *wrangler.Wrangler, tabletAlias topo.TabletAlias, r *http.Request) (string, error) {
// refuse to scrap tablets that are not spare
ti, err := wr.TopoServer().GetTablet(tabletAlias)
if err != nil {
return "", err
}
if ti.Type != topo.TYPE_SPARE {
return "", fmt.Errorf("Can only scrap spare tablets")
}
actionPath, err := wr.Scrap(tabletAlias, false, false)
if err != nil {
return "", err
}
return "", wr.WaitForCompletion(actionPath)
})
actionRepo.RegisterTabletAction("ScrapTabletForce", acl.ADMIN,
func(wr *wrangler.Wrangler, tabletAlias topo.TabletAlias, r *http.Request) (string, error) {
// refuse to scrap tablets that are not spare
ti, err := wr.TopoServer().GetTablet(tabletAlias)
if err != nil {
return "", err
}
if ti.Type != topo.TYPE_SPARE {
return "", fmt.Errorf("Can only scrap spare tablets")
}
_, err = wr.Scrap(tabletAlias, true, false)
return "", err
})
actionRepo.RegisterTabletAction("DeleteTablet", acl.ADMIN,
func(wr *wrangler.Wrangler, tabletAlias topo.TabletAlias, r *http.Request) (string, error) {
return "", wr.DeleteTablet(tabletAlias)
})
// toplevel index
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
templateLoader.ServeTemplate("index.html", indexContent, w, r)
})
// keyspace actions
http.HandleFunc("/keyspace_actions", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpError(w, "cannot parse form: %s", err)
return
}
action := r.FormValue("action")
if action == "" {
http.Error(w, "no action provided", http.StatusBadRequest)
return
}
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "no keyspace provided", http.StatusBadRequest)
return
}
result := actionRepo.ApplyKeyspaceAction(action, keyspace, r)
templateLoader.ServeTemplate("action.html", result, w, r)
})
// shard actions
http.HandleFunc("/shard_actions", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpError(w, "cannot parse form: %s", err)
return
}
action := r.FormValue("action")
if action == "" {
http.Error(w, "no action provided", http.StatusBadRequest)
return
}
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "no keyspace provided", http.StatusBadRequest)
return
}
shard := r.FormValue("shard")
if shard == "" {
http.Error(w, "no shard provided", http.StatusBadRequest)
return
}
result := actionRepo.ApplyShardAction(action, keyspace, shard, r)
templateLoader.ServeTemplate("action.html", result, w, r)
})
// tablet actions
http.HandleFunc("/tablet_actions", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpError(w, "cannot parse form: %s", err)
return
}
action := r.FormValue("action")
if action == "" {
http.Error(w, "no action provided", http.StatusBadRequest)
return
}
alias := r.FormValue("alias")
if alias == "" {
http.Error(w, "no alias provided", http.StatusBadRequest)
return
}
tabletAlias, err := topo.ParseTabletAliasString(alias)
if err != nil {
http.Error(w, "bad alias provided", http.StatusBadRequest)
return
}
result := actionRepo.ApplyTabletAction(action, tabletAlias, r)
templateLoader.ServeTemplate("action.html", result, w, r)
})
// topology server
http.HandleFunc("/dbtopo", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpError(w, "cannot parse form: %s", err)
return
}
result := DbTopologyResult{}
topology, err := topotools.DbTopology(wr.TopoServer())
if err != nil {
result.Error = err.Error()
} else {
result.Topology = topology
}
templateLoader.ServeTemplate("dbtopo.html", result, w, r)
})
// serving graph
http.HandleFunc("/serving_graph/", func(w http.ResponseWriter, r *http.Request) {
parts := strings.Split(r.URL.Path, "/")
cell := parts[len(parts)-1]
if cell == "" {
cells, err := ts.GetKnownCells()
if err != nil {
httpError(w, "cannot get known cells: %v", err)
return
} else {
templateLoader.ServeTemplate("serving_graph_cells.html", cells, w, r)
}
return
}
servingGraph := topotools.DbServingGraph(wr.TopoServer(), cell)
templateLoader.ServeTemplate("serving_graph.html", servingGraph, w, r)
})
// redirects for explorers
http.HandleFunc("/explorers/redirect", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpError(w, "cannot parse form: %s", err)
return
}
var explorer Explorer
switch len(explorers) {
case 0:
http.Error(w, "no explorer configured", http.StatusInternalServerError)
return
case 1:
for _, ex := range explorers {
explorer = ex
}
default:
explorerName := r.FormValue("explorer")
var ok bool
explorer, ok = explorers[explorerName]
if !ok {
http.Error(w, "bad explorer name", http.StatusBadRequest)
return
}
}
var target string
switch r.FormValue("type") {
case "keyspace":
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "keyspace is obligatory for this redirect", http.StatusBadRequest)
return
}
target = explorer.GetKeyspacePath(keyspace)
case "shard":
keyspace, shard := r.FormValue("keyspace"), r.FormValue("shard")
if keyspace == "" || shard == "" {
http.Error(w, "keyspace and shard are obligatory for this redirect", http.StatusBadRequest)
return
}
target = explorer.GetShardPath(keyspace, shard)
case "srv_keyspace":
cell := r.FormValue("cell")
if cell == "" {
http.Error(w, "cell is obligatory for this redirect", http.StatusBadRequest)
return
}
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "keyspace is obligatory for this redirect", http.StatusBadRequest)
return
}
target = explorer.GetSrvKeyspacePath(cell, keyspace)
case "srv_shard":
cell := r.FormValue("cell")
if cell == "" {
http.Error(w, "cell is obligatory for this redirect", http.StatusBadRequest)
return
}
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "keyspace is obligatory for this redirect", http.StatusBadRequest)
return
}
shard := r.FormValue("shard")
if shard == "" {
http.Error(w, "shard is obligatory for this redirect", http.StatusBadRequest)
return
}
target = explorer.GetSrvShardPath(cell, keyspace, shard)
case "srv_type":
cell := r.FormValue("cell")
if cell == "" {
http.Error(w, "cell is obligatory for this redirect", http.StatusBadRequest)
return
}
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "keyspace is obligatory for this redirect", http.StatusBadRequest)
return
}
shard := r.FormValue("shard")
if shard == "" {
http.Error(w, "shard is obligatory for this redirect", http.StatusBadRequest)
return
}
tabletType := r.FormValue("tablet_type")
if tabletType == "" {
http.Error(w, "tablet_type is obligatory for this redirect", http.StatusBadRequest)
return
}
target = explorer.GetSrvTypePath(cell, keyspace, shard, topo.TabletType(tabletType))
case "tablet":
aliasName := r.FormValue("alias")
if aliasName == "" {
http.Error(w, "keyspace is obligatory for this redirect", http.StatusBadRequest)
return
}
alias, err := topo.ParseTabletAliasString(aliasName)
if err != nil {
http.Error(w, "bad tablet alias", http.StatusBadRequest)
return
}
target = explorer.GetTabletPath(alias)
case "replication":
cell := r.FormValue("cell")
if cell == "" {
http.Error(w, "cell is obligatory for this redirect", http.StatusBadRequest)
return
}
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "keyspace is obligatory for this redirect", http.StatusBadRequest)
return
}
shard := r.FormValue("shard")
if shard == "" {
http.Error(w, "shard is obligatory for this redirect", http.StatusBadRequest)
return
}
target = explorer.GetReplicationSlaves(cell, keyspace, shard)
default:
http.Error(w, "bad redirect type", http.StatusBadRequest)
return
}
http.Redirect(w, r, target, http.StatusFound)
})
servenv.RunDefault()
}
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
})
}
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
})
// 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) {
schemafier, ok := ts.(topo.Schemafier)
if !ok {
httpErrorf(w, r, "%T doesn't support schemafier API", ts)
return
}
// 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 := schemafier.SaveVSchema(ctx, string(vschema)); err != nil {
httpErrorf(w, r, "can't save vschema: %v", err)
}
return
}
// Get VSchema
vschema, err := schemafier.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 main() {
flag.Parse()
servenv.Init()
defer servenv.Close()
templateLoader = NewTemplateLoader(*templateDir, dummyTemplate, *debug)
ts := topo.GetServer()
defer topo.CloseServers()
wr := wrangler.New(ts, 30*time.Second, 30*time.Second)
actionRepo = NewActionRepository(wr)
// keyspace actions
actionRepo.RegisterKeyspaceAction("ValidateKeyspace",
func(wr *wrangler.Wrangler, keyspace string, r *http.Request) (string, error) {
return "", wr.ValidateKeyspace(keyspace, false)
})
actionRepo.RegisterKeyspaceAction("ValidateSchemaKeyspace",
func(wr *wrangler.Wrangler, keyspace string, r *http.Request) (string, error) {
return "", wr.ValidateSchemaKeyspace(keyspace, false)
})
actionRepo.RegisterKeyspaceAction("ValidateVersionKeyspace",
func(wr *wrangler.Wrangler, keyspace string, r *http.Request) (string, error) {
return "", wr.ValidateVersionKeyspace(keyspace)
})
actionRepo.RegisterKeyspaceAction("ValidatePermissionsKeyspace",
func(wr *wrangler.Wrangler, keyspace string, r *http.Request) (string, error) {
return "", wr.ValidatePermissionsKeyspace(keyspace)
})
// shard actions
actionRepo.RegisterShardAction("ValidateShard",
func(wr *wrangler.Wrangler, keyspace, shard string, r *http.Request) (string, error) {
return "", wr.ValidateShard(keyspace, shard, false)
})
actionRepo.RegisterShardAction("ValidateSchemaShard",
func(wr *wrangler.Wrangler, keyspace, shard string, r *http.Request) (string, error) {
return "", wr.ValidateSchemaShard(keyspace, shard, false)
})
actionRepo.RegisterShardAction("ValidateVersionShard",
func(wr *wrangler.Wrangler, keyspace, shard string, r *http.Request) (string, error) {
return "", wr.ValidateVersionShard(keyspace, shard)
})
actionRepo.RegisterShardAction("ValidatePermissionsShard",
func(wr *wrangler.Wrangler, keyspace, shard string, r *http.Request) (string, error) {
return "", wr.ValidatePermissionsShard(keyspace, shard)
})
// tablet actions
actionRepo.RegisterTabletAction("RpcPing",
func(wr *wrangler.Wrangler, tabletAlias topo.TabletAlias, r *http.Request) (string, error) {
return "", wr.ActionInitiator().RpcPing(tabletAlias, 10*time.Second)
})
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
templateLoader.ServeTemplate("index.html", indexContent, w, r)
})
http.HandleFunc("/keyspace_actions", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpError(w, "cannot parse form: %s", err)
return
}
action := r.FormValue("action")
if action == "" {
http.Error(w, "no action provided", http.StatusBadRequest)
return
}
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "no keyspace provided", http.StatusBadRequest)
return
}
result := actionRepo.ApplyKeyspaceAction(action, keyspace, r)
templateLoader.ServeTemplate("action.html", result, w, r)
})
http.HandleFunc("/shard_actions", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpError(w, "cannot parse form: %s", err)
return
}
action := r.FormValue("action")
if action == "" {
http.Error(w, "no action provided", http.StatusBadRequest)
return
}
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "no keyspace provided", http.StatusBadRequest)
return
}
shard := r.FormValue("shard")
if shard == "" {
http.Error(w, "no shard provided", http.StatusBadRequest)
return
}
result := actionRepo.ApplyShardAction(action, keyspace, shard, r)
templateLoader.ServeTemplate("action.html", result, w, r)
})
http.HandleFunc("/tablet_actions", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpError(w, "cannot parse form: %s", err)
return
}
action := r.FormValue("action")
if action == "" {
http.Error(w, "no action provided", http.StatusBadRequest)
return
}
alias := r.FormValue("alias")
if alias == "" {
http.Error(w, "no alias provided", http.StatusBadRequest)
return
}
tabletAlias, err := topo.ParseTabletAliasString(alias)
if err != nil {
http.Error(w, "bad alias provided", http.StatusBadRequest)
return
}
result := actionRepo.ApplyTabletAction(action, tabletAlias, r)
templateLoader.ServeTemplate("action.html", result, w, r)
})
http.HandleFunc("/dbtopo", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpError(w, "cannot parse form: %s", err)
return
}
result := DbTopologyResult{}
topology, err := wr.DbTopology()
if err != nil {
result.Error = err.Error()
} else {
result.Topology = topology
}
templateLoader.ServeTemplate("dbtopo.html", result, w, r)
})
http.HandleFunc("/serving_graph/", func(w http.ResponseWriter, r *http.Request) {
parts := strings.Split(r.URL.Path, "/")
cell := parts[len(parts)-1]
if cell == "" {
cells, err := wr.TopoServer().GetKnownCells()
if err != nil {
httpError(w, "cannot get known cells: %v", err)
return
} else {
templateLoader.ServeTemplate("serving_graph_cells.html", cells, w, r)
}
return
}
result := ServingGraphResult{}
servingGraph, err := wr.ServingGraph(cell)
if err != nil {
result.Error = err.Error()
} else {
result.ServingGraph = servingGraph
}
templateLoader.ServeTemplate("serving_graph.html", result, w, r)
})
http.HandleFunc("/explorers/redirect", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpError(w, "cannot parse form: %s", err)
return
}
explorerName := r.FormValue("explorer")
explorer, ok := explorers[explorerName]
if !ok {
http.Error(w, "bad explorer name", http.StatusBadRequest)
return
}
var target string
switch r.FormValue("type") {
case "keyspace":
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "keyspace is obligatory for this redirect", http.StatusBadRequest)
return
}
target = explorer.GetKeyspacePath(keyspace)
case "shard":
keyspace, shard := r.FormValue("keyspace"), r.FormValue("shard")
if keyspace == "" || shard == "" {
http.Error(w, "keyspace and shard are obligatory for this redirect", http.StatusBadRequest)
return
}
target = explorer.GetShardPath(keyspace, shard)
case "srv_keyspace":
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "keyspace is obligatory for this redirect", http.StatusBadRequest)
return
}
cell := r.FormValue("cell")
if cell == "" {
http.Error(w, "cell is obligatory for this redirect", http.StatusBadRequest)
return
}
target = explorer.GetSrvKeyspacePath(cell, keyspace)
case "srv_shard":
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "keyspace is obligatory for this redirect", http.StatusBadRequest)
return
}
cell := r.FormValue("cell")
if cell == "" {
http.Error(w, "cell is obligatory for this redirect", http.StatusBadRequest)
return
}
shard := r.FormValue("shard")
if shard == "" {
http.Error(w, "shard is obligatory for this redirect", http.StatusBadRequest)
return
}
target = explorer.GetSrvShardPath(cell, keyspace, shard)
case "srv_type":
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "keyspace is obligatory for this redirect", http.StatusBadRequest)
return
}
cell := r.FormValue("cell")
if cell == "" {
http.Error(w, "cell is obligatory for this redirect", http.StatusBadRequest)
return
}
shard := r.FormValue("shard")
if shard == "" {
http.Error(w, "shard is obligatory for this redirect", http.StatusBadRequest)
return
}
tabletType := r.FormValue("tablet_type")
if tabletType == "" {
http.Error(w, "tablet_type is obligatory for this redirect", http.StatusBadRequest)
return
}
target = explorer.GetSrvTypePath(cell, keyspace, shard, topo.TabletType(tabletType))
case "tablet":
aliasName := r.FormValue("alias")
if aliasName == "" {
http.Error(w, "keyspace is obligatory for this redirect", http.StatusBadRequest)
return
}
alias, err := topo.ParseTabletAliasString(aliasName)
if err != nil {
http.Error(w, "bad tablet alias", http.StatusBadRequest)
return
}
target = explorer.GetTabletPath(alias)
case "replication":
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "keyspace is obligatory for this redirect", http.StatusBadRequest)
return
}
cell := r.FormValue("cell")
if cell == "" {
http.Error(w, "cell is obligatory for this redirect", http.StatusBadRequest)
return
}
shard := r.FormValue("shard")
if shard == "" {
http.Error(w, "shard is obligatory for this redirect", http.StatusBadRequest)
return
}
target = explorer.GetReplicationSlaves(cell, keyspace, shard)
default:
http.Error(w, "bad redirect type", http.StatusBadRequest)
return
}
http.Redirect(w, r, target, http.StatusFound)
})
servenv.Run(*port)
}
func main() {
flag.Parse()
servenv.Init()
defer servenv.Close()
templateLoader = NewTemplateLoader(*templateDir, *debug)
ts = topo.GetServer()
defer topo.CloseServers()
actionRepo = NewActionRepository(ts)
// keyspace actions
actionRepo.RegisterKeyspaceAction("ValidateKeyspace",
func(ctx context.Context, wr *wrangler.Wrangler, keyspace string, r *http.Request) (string, error) {
return "", wr.ValidateKeyspace(ctx, keyspace, false)
})
actionRepo.RegisterKeyspaceAction("ValidateSchemaKeyspace",
func(ctx context.Context, wr *wrangler.Wrangler, keyspace string, r *http.Request) (string, error) {
return "", wr.ValidateSchemaKeyspace(ctx, keyspace, nil, false)
})
actionRepo.RegisterKeyspaceAction("ValidateVersionKeyspace",
func(ctx context.Context, wr *wrangler.Wrangler, keyspace string, r *http.Request) (string, error) {
return "", wr.ValidateVersionKeyspace(ctx, keyspace)
})
actionRepo.RegisterKeyspaceAction("ValidatePermissionsKeyspace",
func(ctx context.Context, wr *wrangler.Wrangler, keyspace string, r *http.Request) (string, error) {
return "", wr.ValidatePermissionsKeyspace(ctx, keyspace)
})
// shard actions
actionRepo.RegisterShardAction("ValidateShard",
func(ctx context.Context, wr *wrangler.Wrangler, keyspace, shard string, r *http.Request) (string, error) {
return "", wr.ValidateShard(ctx, keyspace, shard, false)
})
actionRepo.RegisterShardAction("ValidateSchemaShard",
func(ctx context.Context, wr *wrangler.Wrangler, keyspace, shard string, r *http.Request) (string, error) {
return "", wr.ValidateSchemaShard(ctx, keyspace, shard, nil, false)
})
actionRepo.RegisterShardAction("ValidateVersionShard",
func(ctx context.Context, wr *wrangler.Wrangler, keyspace, shard string, r *http.Request) (string, error) {
return "", wr.ValidateVersionShard(ctx, keyspace, shard)
})
actionRepo.RegisterShardAction("ValidatePermissionsShard",
func(ctx context.Context, wr *wrangler.Wrangler, keyspace, shard string, r *http.Request) (string, error) {
return "", wr.ValidatePermissionsShard(ctx, keyspace, shard)
})
// tablet actions
actionRepo.RegisterTabletAction("Ping", "",
func(ctx context.Context, wr *wrangler.Wrangler, tabletAlias *pb.TabletAlias, r *http.Request) (string, error) {
ti, err := wr.TopoServer().GetTablet(ctx, tabletAlias)
if err != nil {
return "", err
}
return "", wr.TabletManagerClient().Ping(ctx, ti)
})
actionRepo.RegisterTabletAction("RefreshState", acl.ADMIN,
func(ctx context.Context, wr *wrangler.Wrangler, tabletAlias *pb.TabletAlias, r *http.Request) (string, error) {
ti, err := wr.TopoServer().GetTablet(ctx, tabletAlias)
if err != nil {
return "", err
}
return "", wr.TabletManagerClient().RefreshState(ctx, ti)
})
actionRepo.RegisterTabletAction("ScrapTablet", acl.ADMIN,
func(ctx context.Context, wr *wrangler.Wrangler, tabletAlias *pb.TabletAlias, r *http.Request) (string, error) {
// refuse to scrap tablets that are not spare
ti, err := wr.TopoServer().GetTablet(ctx, tabletAlias)
if err != nil {
return "", err
}
if ti.Type != pb.TabletType_SPARE {
return "", fmt.Errorf("Can only scrap spare tablets")
}
return "", wr.Scrap(ctx, tabletAlias, false, false)
})
actionRepo.RegisterTabletAction("ScrapTabletForce", acl.ADMIN,
func(ctx context.Context, wr *wrangler.Wrangler, tabletAlias *pb.TabletAlias, r *http.Request) (string, error) {
// refuse to scrap tablets that are not spare
ti, err := wr.TopoServer().GetTablet(ctx, tabletAlias)
if err != nil {
return "", err
}
if ti.Type != pb.TabletType_SPARE {
return "", fmt.Errorf("Can only scrap spare tablets")
}
return "", wr.Scrap(ctx, tabletAlias, true, false)
})
actionRepo.RegisterTabletAction("DeleteTablet", acl.ADMIN,
func(ctx context.Context, wr *wrangler.Wrangler, tabletAlias *pb.TabletAlias, r *http.Request) (string, error) {
return "", wr.DeleteTablet(ctx, tabletAlias)
})
actionRepo.RegisterTabletAction("ReloadSchema", acl.ADMIN,
func(ctx context.Context, wr *wrangler.Wrangler, tabletAlias *pb.TabletAlias, r *http.Request) (string, error) {
return "", wr.ReloadSchema(ctx, tabletAlias)
})
// keyspace actions
http.HandleFunc("/keyspace_actions", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpErrorf(w, r, "cannot parse form: %s", err)
return
}
action := r.FormValue("action")
if action == "" {
http.Error(w, "no action provided", http.StatusBadRequest)
return
}
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "no keyspace provided", http.StatusBadRequest)
return
}
ctx := context.Background()
result := actionRepo.ApplyKeyspaceAction(ctx, action, keyspace, r)
templateLoader.ServeTemplate("action.html", result, w, r)
})
// shard actions
http.HandleFunc("/shard_actions", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpErrorf(w, r, "cannot parse form: %s", err)
return
}
action := r.FormValue("action")
if action == "" {
http.Error(w, "no action provided", http.StatusBadRequest)
return
}
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "no keyspace provided", http.StatusBadRequest)
return
}
shard := r.FormValue("shard")
if shard == "" {
http.Error(w, "no shard provided", http.StatusBadRequest)
return
}
ctx := context.Background()
result := actionRepo.ApplyShardAction(ctx, action, keyspace, shard, r)
templateLoader.ServeTemplate("action.html", result, w, r)
})
// tablet actions
http.HandleFunc("/tablet_actions", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpErrorf(w, r, "cannot parse form: %s", err)
return
}
action := r.FormValue("action")
if action == "" {
http.Error(w, "no action provided", http.StatusBadRequest)
return
}
alias := r.FormValue("alias")
if alias == "" {
http.Error(w, "no alias provided", http.StatusBadRequest)
return
}
tabletAlias, err := topo.ParseTabletAliasString(alias)
if err != nil {
http.Error(w, "bad alias provided", http.StatusBadRequest)
return
}
ctx := context.Background()
result := actionRepo.ApplyTabletAction(ctx, action, tabletAlias, r)
templateLoader.ServeTemplate("action.html", result, w, r)
})
// topology server
http.HandleFunc("/dbtopo", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpErrorf(w, r, "cannot parse form: %s", err)
return
}
result := DbTopologyResult{}
ctx := context.TODO()
topology, err := topotools.DbTopology(ctx, ts)
if err == nil && modifyDbTopology != nil {
err = modifyDbTopology(ctx, ts, topology)
}
if err != nil {
result.Error = err.Error()
} else {
result.Topology = topology
}
templateLoader.ServeTemplate("dbtopo.html", result, w, r)
})
// serving graph
http.HandleFunc("/serving_graph/", func(w http.ResponseWriter, r *http.Request) {
ctx := context.Background()
parts := strings.Split(r.URL.Path, "/")
cell := parts[len(parts)-1]
if cell == "" {
cells, err := ts.GetKnownCells(ctx)
if err != nil {
httpErrorf(w, r, "cannot get known cells: %v", err)
return
}
templateLoader.ServeTemplate("serving_graph_cells.html", cells, w, r)
return
}
servingGraph := topotools.DbServingGraph(ctx, ts, cell)
if modifyDbServingGraph != nil {
modifyDbServingGraph(ctx, ts, servingGraph)
}
templateLoader.ServeTemplate("serving_graph.html", servingGraph, w, r)
})
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
http.Redirect(w, r, "/app/", http.StatusFound)
})
http.HandleFunc("/content/", func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, *templateDir+r.URL.Path[8:])
})
// Serve the static files for the vtctld web app.
http.HandleFunc("/app/", func(w http.ResponseWriter, r *http.Request) {
// Strip the prefix.
parts := strings.SplitN(r.URL.Path, "/", 3)
if len(parts) != 3 {
http.NotFound(w, r)
return
}
rest := parts[2]
if rest == "" {
rest = "index.html"
}
http.ServeFile(w, r, path.Join(*webDir, rest))
})
// Serve the REST API for the vtctld web app.
initAPI(context.Background(), ts, actionRepo)
// vschema viewer
http.HandleFunc("/vschema", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpErrorf(w, r, "cannot parse form: %s", err)
return
}
schemafier, ok := ts.(topo.Schemafier)
if !ok {
httpErrorf(w, r, "%s", fmt.Errorf("%T doesn't support schemafier API", ts))
}
var data struct {
Error error
Input, Output string
}
ctx := context.Background()
switch r.Method {
case "POST":
data.Input = r.FormValue("vschema")
data.Error = schemafier.SaveVSchema(ctx, data.Input)
}
vschema, err := schemafier.GetVSchema(ctx)
if err != nil {
if data.Error == nil {
data.Error = fmt.Errorf("Error fetching schema: %s", err)
}
}
data.Output = vschema
templateLoader.ServeTemplate("vschema.html", data, w, r)
})
// redirects for explorers
http.HandleFunc("/explorers/redirect", func(w http.ResponseWriter, r *http.Request) {
if explorer == nil {
http.Error(w, "no explorer configured", http.StatusInternalServerError)
return
}
if err := r.ParseForm(); err != nil {
httpErrorf(w, r, "cannot parse form: %s", err)
return
}
target, err := handleExplorerRedirect(r)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
http.Redirect(w, r, target, http.StatusFound)
})
// serve some data
knownCellsCache := newKnownCellsCache(ts)
http.HandleFunc("/json/KnownCells", func(w http.ResponseWriter, r *http.Request) {
ctx := context.Background()
result, err := knownCellsCache.Get(ctx)
if err != nil {
httpErrorf(w, r, "error getting known cells: %v", err)
return
}
w.Write(result)
})
keyspacesCache := newKeyspacesCache(ts)
http.HandleFunc("/json/Keyspaces", func(w http.ResponseWriter, r *http.Request) {
ctx := context.Background()
result, err := keyspacesCache.Get(ctx)
if err != nil {
httpErrorf(w, r, "error getting keyspaces: %v", err)
return
}
w.Write(result)
})
keyspaceCache := newKeyspaceCache(ts)
http.HandleFunc("/json/Keyspace", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpErrorf(w, r, "cannot parse form: %s", err)
return
}
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "no keyspace provided", http.StatusBadRequest)
return
}
ctx := context.Background()
result, err := keyspaceCache.Get(ctx, keyspace)
if err != nil {
httpErrorf(w, r, "error getting keyspace: %v", err)
return
}
w.Write(result)
})
shardNamesCache := newShardNamesCache(ts)
http.HandleFunc("/json/ShardNames", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpErrorf(w, r, "cannot parse form: %s", err)
return
}
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "no keyspace provided", http.StatusBadRequest)
return
}
ctx := context.Background()
result, err := shardNamesCache.Get(ctx, keyspace)
if err != nil {
httpErrorf(w, r, "error getting shardNames: %v", err)
return
}
w.Write(result)
})
shardCache := newShardCache(ts)
http.HandleFunc("/json/Shard", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpErrorf(w, r, "cannot parse form: %s", err)
return
}
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "no keyspace provided", http.StatusBadRequest)
return
}
shard := r.FormValue("shard")
if shard == "" {
http.Error(w, "no shard provided", http.StatusBadRequest)
return
}
ctx := context.Background()
result, err := shardCache.Get(ctx, keyspace+"/"+shard)
if err != nil {
httpErrorf(w, r, "error getting shard: %v", err)
return
}
w.Write(result)
})
cellShardTabletsCache := newCellShardTabletsCache(ts)
http.HandleFunc("/json/CellShardTablets", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpErrorf(w, r, "cannot parse form: %s", err)
return
}
cell := r.FormValue("cell")
if cell == "" {
http.Error(w, "no cell provided", http.StatusBadRequest)
return
}
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "no keyspace provided", http.StatusBadRequest)
return
}
shard := r.FormValue("shard")
if shard == "" {
http.Error(w, "no shard provided", http.StatusBadRequest)
return
}
ctx := context.Background()
result, err := cellShardTabletsCache.Get(ctx, cell+"/"+keyspace+"/"+shard)
if err != nil {
httpErrorf(w, r, "error getting shard: %v", err)
return
}
w.Write(result)
})
// flush all data and will force a full client reload
http.HandleFunc("/json/flush", func(w http.ResponseWriter, r *http.Request) {
knownCellsCache.Flush()
keyspacesCache.Flush()
keyspaceCache.Flush()
shardNamesCache.Flush()
shardCache.Flush()
cellShardTabletsCache.Flush()
})
http.HandleFunc("/json/schema-manager", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpErrorf(w, r, "cannot parse form: %s", err)
return
}
sqlStr := r.FormValue("data")
keyspace := r.FormValue("keyspace")
executor := schemamanager.NewTabletExecutor(
tmclient.NewTabletManagerClient(),
ts)
ctx := context.Background()
schemamanager.Run(
ctx,
schemamanager.NewUIController(sqlStr, keyspace, w),
executor,
)
})
if *schemaChangeDir != "" {
interval := 60
if *schemaChangeCheckInterval > 0 {
interval = *schemaChangeCheckInterval
}
timer := timer.NewTimer(time.Duration(interval) * time.Second)
controllerFactory, err :=
schemamanager.GetControllerFactory(*schemaChangeController)
if err != nil {
log.Fatalf("unable to get a controller factory, error: %v", err)
}
timer.Start(func() {
controller, err := controllerFactory(map[string]string{
schemamanager.SchemaChangeDirName: *schemaChangeDir,
schemamanager.SchemaChangeUser: *schemaChangeUser,
})
if err != nil {
log.Errorf("failed to get controller, error: %v", err)
return
}
ctx := context.Background()
err = schemamanager.Run(
ctx,
controller,
schemamanager.NewTabletExecutor(
tmclient.NewTabletManagerClient(), ts),
)
if err != nil {
log.Errorf("Schema change failed, error: %v", err)
}
})
servenv.OnClose(func() { timer.Stop() })
}
servenv.RunDefault()
}
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 main() {
flag.Parse()
templateLoader = NewTemplateLoader(*templateDir, dummyTemplate, *debug)
ts := topo.GetServer()
defer topo.CloseServers()
wr := wrangler.New(ts, 30*time.Second, 30*time.Second)
actionRepo = NewActionRepository(wr)
// keyspace actions
actionRepo.RegisterKeyspaceAction("ValidateKeyspace",
func(wr *wrangler.Wrangler, keyspace string, r *http.Request) (string, error) {
return "", wr.ValidateKeyspace(keyspace, false)
})
actionRepo.RegisterKeyspaceAction("ValidateSchemaKeyspace",
func(wr *wrangler.Wrangler, keyspace string, r *http.Request) (string, error) {
return "", wr.ValidateSchemaKeyspace(keyspace, false)
})
actionRepo.RegisterKeyspaceAction("ValidateVersionKeyspace",
func(wr *wrangler.Wrangler, keyspace string, r *http.Request) (string, error) {
return "", wr.ValidateVersionKeyspace(keyspace)
})
actionRepo.RegisterKeyspaceAction("ValidatePermissionsKeyspace",
func(wr *wrangler.Wrangler, keyspace string, r *http.Request) (string, error) {
return "", wr.ValidatePermissionsKeyspace(keyspace)
})
// shard actions
actionRepo.RegisterShardAction("ValidateShard",
func(wr *wrangler.Wrangler, keyspace, shard string, r *http.Request) (string, error) {
return "", wr.ValidateShard(keyspace, shard, false)
})
actionRepo.RegisterShardAction("ValidateSchemaShard",
func(wr *wrangler.Wrangler, keyspace, shard string, r *http.Request) (string, error) {
return "", wr.ValidateSchemaShard(keyspace, shard, false)
})
actionRepo.RegisterShardAction("ValidateVersionShard",
func(wr *wrangler.Wrangler, keyspace, shard string, r *http.Request) (string, error) {
return "", wr.ValidateVersionShard(keyspace, shard)
})
actionRepo.RegisterShardAction("ValidatePermissionsShard",
func(wr *wrangler.Wrangler, keyspace, shard string, r *http.Request) (string, error) {
return "", wr.ValidatePermissionsShard(keyspace, shard)
})
// tablet actions
actionRepo.RegisterTabletAction("RpcPing",
func(wr *wrangler.Wrangler, tabletAlias topo.TabletAlias, r *http.Request) (string, error) {
return "", wr.ActionInitiator().RpcPing(tabletAlias, 10*time.Second)
})
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
templateLoader.ServeTemplate("index.html", indexContent, w, r)
})
http.HandleFunc("/keyspace_actions", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpError(w, "cannot parse form: %s", err)
return
}
action := r.FormValue("action")
if action == "" {
http.Error(w, "no action provided", http.StatusBadRequest)
return
}
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "no keyspace provided", http.StatusBadRequest)
return
}
result := actionRepo.ApplyKeyspaceAction(action, keyspace, r)
templateLoader.ServeTemplate("action.html", result, w, r)
})
http.HandleFunc("/shard_actions", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpError(w, "cannot parse form: %s", err)
return
}
action := r.FormValue("action")
if action == "" {
http.Error(w, "no action provided", http.StatusBadRequest)
return
}
keyspace := r.FormValue("keyspace")
if keyspace == "" {
http.Error(w, "no keyspace provided", http.StatusBadRequest)
return
}
shard := r.FormValue("shard")
if shard == "" {
http.Error(w, "no shard provided", http.StatusBadRequest)
return
}
result := actionRepo.ApplyShardAction(action, keyspace, shard, r)
templateLoader.ServeTemplate("action.html", result, w, r)
})
http.HandleFunc("/tablet_actions", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpError(w, "cannot parse form: %s", err)
return
}
action := r.FormValue("action")
if action == "" {
http.Error(w, "no action provided", http.StatusBadRequest)
return
}
alias := r.FormValue("alias")
if alias == "" {
http.Error(w, "no alias provided", http.StatusBadRequest)
return
}
tabletAlias, err := topo.ParseTabletAliasString(alias)
if err != nil {
http.Error(w, "bad alias provided", http.StatusBadRequest)
return
}
result := actionRepo.ApplyTabletAction(action, tabletAlias, r)
templateLoader.ServeTemplate("action.html", result, w, r)
})
http.HandleFunc("/dbtopo", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpError(w, "cannot parse form: %s", err)
return
}
result := DbTopologyResult{}
topology, err := wr.DbTopology()
if err != nil {
result.Error = err.Error()
} else {
result.Topology = topology
}
templateLoader.ServeTemplate("dbtopo.html", result, w, r)
})
log.Fatalf("%s", http.ListenAndServe(fmt.Sprintf(":%d", *port), nil))
}
func main() {
defer exit.Recover()
flags := dbconfigs.AppConfig | dbconfigs.DbaConfig |
dbconfigs.FilteredConfig | dbconfigs.ReplConfig
dbconfigs.RegisterFlags(flags)
mysqlctl.RegisterFlags()
flag.Parse()
if len(flag.Args()) > 0 {
flag.Usage()
log.Errorf("vttablet doesn't take any positional arguments")
exit.Return(1)
}
servenv.Init()
if *tabletPath == "" {
log.Errorf("tabletPath required")
exit.Return(1)
}
tabletAlias, err := topo.ParseTabletAliasString(*tabletPath)
if err != nil {
log.Error(err)
exit.Return(1)
}
mycnf, err := mysqlctl.NewMycnfFromFlags(tabletAlias.Uid)
if err != nil {
log.Errorf("mycnf read failed: %v", err)
exit.Return(1)
}
dbcfgs, err := dbconfigs.Init(mycnf.SocketFile, flags)
if err != nil {
log.Warning(err)
}
dbcfgs.App.EnableRowcache = *enableRowcache
if *tableAclConfig != "" {
tableacl.Register("simpleacl", &simpleacl.Factory{})
tableacl.Init(*tableAclConfig)
} else if *enforceTableACLConfig {
log.Error("table acl config has to be specified with table-acl-config flag because enforce-tableacl-config is set.")
exit.Return(1)
}
// creates and registers the query service
qsc := tabletserver.NewQueryServiceControl()
tabletserver.InitQueryService(qsc)
binlog.RegisterUpdateStreamService(mycnf)
// Create mysqld and register the health reporter (needs to be done
// before initializing the agent, so the initial health check
// done by the agent has the right reporter)
mysqld := mysqlctl.NewMysqld("Dba", "App", mycnf, &dbcfgs.Dba, &dbcfgs.App.ConnParams, &dbcfgs.Repl)
registerHealthReporter(mysqld)
// Depends on both query and updateStream.
gRPCPort := int32(0)
if servenv.GRPCPort != nil {
gRPCPort = int32(*servenv.GRPCPort)
}
agent, err = tabletmanager.NewActionAgent(context.Background(), mysqld, qsc, tabletAlias, dbcfgs, mycnf, int32(*servenv.Port), gRPCPort, *overridesFile, *lockTimeout)
if err != nil {
log.Error(err)
exit.Return(1)
}
servenv.OnRun(func() {
addStatusParts(qsc)
})
servenv.OnTerm(func() {
qsc.DisallowQueries()
binlog.DisableUpdateStreamService()
agent.Stop()
})
servenv.OnClose(func() {
// We will still use the topo server during lameduck period
// to update our state, so closing it in OnClose()
topo.CloseServers()
})
servenv.RunDefault()
}
func main() {
flag.Parse()
templateLoader := NewTemplateLoader(*templateDir, dummyTemplate, *debug)
ts := topo.GetServer()
defer topo.CloseServers()
wr := wrangler.New(ts, 30*time.Second, 30*time.Second)
actionRepo := NewActionRepository(wr)
const (
keyspacePath = "/zk/global/vt/keyspaces/*"
shardPath = "/zk/global/vt/keyspaces/*/shards/*"
tabletPath = "/zk/*/vt/tablets/*"
)
actionRepo.Register(keyspacePath, "ValidateKeyspace",
func(wr *wrangler.Wrangler, zkPath string, r *http.Request) (string, error) {
return "", wr.ValidateKeyspace(path.Base(zkPath), false)
})
actionRepo.Register(keyspacePath, "ValidateSchemaKeyspace",
func(wr *wrangler.Wrangler, zkPath string, r *http.Request) (string, error) {
return "", wr.ValidateSchemaKeyspace(path.Base(zkPath), false)
})
actionRepo.Register(keyspacePath, "ValidateVersionKeyspace",
func(wr *wrangler.Wrangler, zkPath string, r *http.Request) (string, error) {
return "", wr.ValidateVersionKeyspace(path.Base(zkPath))
})
actionRepo.Register(keyspacePath, "ValidatePermissionsKeyspace",
func(wr *wrangler.Wrangler, zkPath string, r *http.Request) (string, error) {
return "", wr.ValidatePermissionsKeyspace(path.Base(zkPath))
})
actionRepo.Register(shardPath, "ValidateShard",
func(wr *wrangler.Wrangler, zkPath string, r *http.Request) (string, error) {
zkPathParts := strings.Split(zkPath, "/")
return "", wr.ValidateShard(zkPathParts[5], zkPathParts[7], false)
})
actionRepo.Register(shardPath, "ValidateSchemaShard",
func(wr *wrangler.Wrangler, zkPath string, r *http.Request) (string, error) {
zkPathParts := strings.Split(zkPath, "/")
return "", wr.ValidateSchemaShard(zkPathParts[5], zkPathParts[7], false)
})
actionRepo.Register(shardPath, "ValidateVersionShard",
func(wr *wrangler.Wrangler, zkPath string, r *http.Request) (string, error) {
zkPathParts := strings.Split(zkPath, "/")
return "", wr.ValidateVersionShard(zkPathParts[5], zkPathParts[7])
})
actionRepo.Register(shardPath, "ValidatePermissionsShard",
func(wr *wrangler.Wrangler, zkPath string, r *http.Request) (string, error) {
zkPathParts := strings.Split(zkPath, "/")
return "", wr.ValidatePermissionsShard(zkPathParts[5], zkPathParts[7])
})
actionRepo.Register(tabletPath, "RpcPing",
func(wr *wrangler.Wrangler, zkPath string, r *http.Request) (string, error) {
zkPathParts := strings.Split(zkPath, "/")
alias, err := topo.ParseTabletAliasString(zkPathParts[2] + "-" + zkPathParts[5])
if err != nil {
return "", err
}
return "", wr.ActionInitiator().RpcPing(alias, 10*time.Second)
})
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
tmpl, err := templateLoader.Lookup("index.html")
if err != nil {
httpError(w, "error in template loader: %v", err)
return
}
if err := tmpl.Execute(w, nil); err != nil {
httpError(w, "error executing template", err)
}
})
http.HandleFunc("/actions", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpError(w, "cannot parse form: %s", err)
return
}
action := r.FormValue("action")
if action == "" {
http.Error(w, "no action provided", http.StatusBadRequest)
return
}
zkPath := r.FormValue("zkpath")
if zkPath == "" {
http.Error(w, "no zookeeper path provided", http.StatusBadRequest)
return
}
result := actionRepo.Apply(action, zkPath, r)
templateLoader.ServeTemplate("action.html", result, w, r)
})
http.HandleFunc("/dbtopo", func(w http.ResponseWriter, r *http.Request) {
if err := r.ParseForm(); err != nil {
httpError(w, "cannot parse form: %s", err)
return
}
result := DbTopologyResult{}
topology, err := wr.DbTopology()
if err != nil {
result.Error = err.Error()
} else {
result.Topology = topology
}
templateLoader.ServeTemplate("dbtopo.html", result, w, r)
})
http.HandleFunc("/zk/", func(w http.ResponseWriter, r *http.Request) {
zkTopoServ := topo.GetServerByName("zookeeper")
if zkTopoServ == nil {
http.Error(w, "can only look at zk with zktopo.Server", http.StatusInternalServerError)
return
}
zconn := zkTopoServ.(*zktopo.Server).GetZConn()
if err := r.ParseForm(); err != nil {
httpError(w, "cannot parse form: %s", err)
return
}
zkPath := r.URL.Path[strings.Index(r.URL.Path, "/zk"):]
if cleanPath := path.Clean(zkPath); zkPath != cleanPath && zkPath != cleanPath+"/" {
relog.Info("redirecting to %v", cleanPath)
http.Redirect(w, r, cleanPath, http.StatusTemporaryRedirect)
return
}
if strings.HasSuffix(zkPath, "/") {
zkPath = zkPath[:len(zkPath)-1]
}
result := NewZkResult(zkPath)
if zkPath == "/zk" {
cells, err := zk.ResolveWildcards(zconn, []string{"/zk/*"})
if err != nil {
httpError(w, "zk error: %v", err)
return
}
for i, cell := range cells {
cells[i] = cell[4:] // cut off "/zk/"
}
result.Children = cells
} else {
if data, _, err := zconn.Get(zkPath); err != nil {
result.Error = err.Error()
} else {
actionRepo.PopulateAvailableActions(result)
result.Data = data
if children, _, err := zconn.Children(zkPath); err != nil {
result.Error = err.Error()
} else {
result.Children = children
}
}
}
templateLoader.ServeTemplate("zk.html", result, w, r)
})
relog.Fatal("%s", http.ListenAndServe(fmt.Sprintf(":%d", *port), nil))
}