-
Notifications
You must be signed in to change notification settings - Fork 719
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Signed-off-by: disksing <i@disksing.com>
- Loading branch information
Showing
4 changed files
with
353 additions
and
2 deletions.
There are no files selected for viewing
Large diffs are not rendered by default.
Oops, something went wrong.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,210 @@ | ||
| // Copyright 2019 PingCAP, Inc. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package api | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "encoding/hex" | ||
| "net/http" | ||
| "strconv" | ||
|
|
||
| "github.com/gorilla/mux" | ||
| "github.com/pingcap/pd/pkg/apiutil" | ||
| "github.com/pingcap/pd/pkg/codec" | ||
| "github.com/pingcap/pd/server" | ||
| "github.com/pingcap/pd/server/core" | ||
| "github.com/pingcap/pd/server/schedule/placement" | ||
| "github.com/pkg/errors" | ||
| "github.com/unrolled/render" | ||
| ) | ||
|
|
||
| var errPlacementDisabled = errors.New("placement rules feature is disabled") | ||
|
|
||
| type ruleHandler struct { | ||
| svr *server.Server | ||
| rd *render.Render | ||
| } | ||
|
|
||
| func newRulesHandler(svr *server.Server, rd *render.Render) *ruleHandler { | ||
| return &ruleHandler{ | ||
| svr: svr, | ||
| rd: rd, | ||
| } | ||
| } | ||
|
|
||
| func (h *ruleHandler) GetAll(w http.ResponseWriter, r *http.Request) { | ||
| cluster := h.svr.GetRaftCluster() | ||
| if cluster == nil { | ||
| h.rd.JSON(w, http.StatusInternalServerError, server.ErrNotBootstrapped.Error()) | ||
| return | ||
| } | ||
| if !cluster.IsPlacementRulesEnabled() { | ||
| h.rd.JSON(w, http.StatusPreconditionFailed, errPlacementDisabled.Error()) | ||
| return | ||
| } | ||
| rules := cluster.GetRuleManager().GetAllRules() | ||
| h.rd.JSON(w, http.StatusOK, rules) | ||
| } | ||
|
|
||
| func (h *ruleHandler) GetAllByGroup(w http.ResponseWriter, r *http.Request) { | ||
| cluster := h.svr.GetRaftCluster() | ||
| if cluster == nil { | ||
| h.rd.JSON(w, http.StatusInternalServerError, server.ErrNotBootstrapped.Error()) | ||
| return | ||
| } | ||
| if !cluster.IsPlacementRulesEnabled() { | ||
| h.rd.JSON(w, http.StatusPreconditionFailed, errPlacementDisabled.Error()) | ||
| return | ||
| } | ||
| group := mux.Vars(r)["group"] | ||
| rules := cluster.GetRuleManager().GetRulesByGroup(group) | ||
| h.rd.JSON(w, http.StatusOK, rules) | ||
| } | ||
|
|
||
| func (h *ruleHandler) GetAllByRegion(w http.ResponseWriter, r *http.Request) { | ||
| cluster := h.svr.GetRaftCluster() | ||
| if cluster == nil { | ||
| h.rd.JSON(w, http.StatusInternalServerError, server.ErrNotBootstrapped.Error()) | ||
| return | ||
| } | ||
| if !cluster.IsPlacementRulesEnabled() { | ||
| h.rd.JSON(w, http.StatusPreconditionFailed, errPlacementDisabled.Error()) | ||
| return | ||
| } | ||
| regionStr := mux.Vars(r)["region"] | ||
| regionID, err := strconv.ParseUint(regionStr, 10, 64) | ||
| if err != nil { | ||
| h.rd.JSON(w, http.StatusBadRequest, "invalid region id") | ||
| return | ||
| } | ||
| region := cluster.GetRegion(regionID) | ||
| if region == nil { | ||
| h.rd.JSON(w, http.StatusNotFound, server.ErrRegionNotFound(regionID).Error()) | ||
| return | ||
| } | ||
| rules := cluster.GetRuleManager().GetRulesForApplyRegion(region) | ||
| h.rd.JSON(w, http.StatusOK, rules) | ||
| } | ||
|
|
||
| func (h *ruleHandler) GetAllByKey(w http.ResponseWriter, r *http.Request) { | ||
| cluster := h.svr.GetRaftCluster() | ||
| if cluster == nil { | ||
| h.rd.JSON(w, http.StatusInternalServerError, server.ErrNotBootstrapped.Error()) | ||
| return | ||
| } | ||
| if !cluster.IsPlacementRulesEnabled() { | ||
| h.rd.JSON(w, http.StatusPreconditionFailed, errPlacementDisabled.Error()) | ||
| return | ||
| } | ||
| keyHex := mux.Vars(r)["key"] | ||
| key, err := hex.DecodeString(keyHex) | ||
| if err != nil { | ||
| h.rd.JSON(w, http.StatusBadRequest, "key should be in hex format") | ||
| return | ||
| } | ||
| rules := cluster.GetRuleManager().GetRulesByKey(key) | ||
| h.rd.JSON(w, http.StatusOK, rules) | ||
| } | ||
|
|
||
| func (h *ruleHandler) Get(w http.ResponseWriter, r *http.Request) { | ||
| cluster := h.svr.GetRaftCluster() | ||
| if cluster == nil { | ||
| h.rd.JSON(w, http.StatusInternalServerError, server.ErrNotBootstrapped.Error()) | ||
| return | ||
| } | ||
| if !cluster.IsPlacementRulesEnabled() { | ||
| h.rd.JSON(w, http.StatusPreconditionFailed, errPlacementDisabled.Error()) | ||
| return | ||
| } | ||
| group, id := mux.Vars(r)["group"], mux.Vars(r)["id"] | ||
| rule := cluster.GetRuleManager().GetRule(group, id) | ||
| if rule == nil { | ||
| h.rd.JSON(w, http.StatusNotFound, nil) | ||
| return | ||
| } | ||
| h.rd.JSON(w, http.StatusOK, rule) | ||
| } | ||
|
|
||
| func (h *ruleHandler) Set(w http.ResponseWriter, r *http.Request) { | ||
| cluster := h.svr.GetRaftCluster() | ||
| if cluster == nil { | ||
| h.rd.JSON(w, http.StatusInternalServerError, server.ErrNotBootstrapped.Error()) | ||
| return | ||
| } | ||
| if !cluster.IsPlacementRulesEnabled() { | ||
| h.rd.JSON(w, http.StatusPreconditionFailed, errPlacementDisabled.Error()) | ||
| return | ||
| } | ||
| var rule placement.Rule | ||
| if err := apiutil.ReadJSONRespondError(h.rd, w, r.Body, &rule); err != nil { | ||
| return | ||
| } | ||
| if err := h.checkRule(&rule); err != nil { | ||
| h.rd.JSON(w, http.StatusBadRequest, err.Error()) | ||
| return | ||
| } | ||
| if err := cluster.GetRuleManager().SetRule(&rule); err != nil { | ||
| h.rd.JSON(w, http.StatusInternalServerError, err.Error()) | ||
| return | ||
| } | ||
| h.rd.JSON(w, http.StatusOK, nil) | ||
| } | ||
|
|
||
| func (h *ruleHandler) checkRule(r *placement.Rule) error { | ||
| start, err := hex.DecodeString(r.StartKeyHex) | ||
| if err != nil { | ||
| return errors.Wrap(err, "start key is not in hex format") | ||
| } | ||
| end, err := hex.DecodeString(r.EndKeyHex) | ||
| if err != nil { | ||
| return errors.Wrap(err, "end key is not hex format") | ||
| } | ||
| if len(start) > 0 && bytes.Compare(end, start) <= 0 { | ||
| return errors.New("endKey should be greater than startKey") | ||
| } | ||
|
|
||
| keyType := h.svr.GetConfig().PDServerCfg.KeyType | ||
| if keyType == core.Table.String() || keyType == core.Txn.String() { | ||
| if len(start) > 0 { | ||
| if _, _, err = codec.DecodeBytes(start); err != nil { | ||
| return errors.Wrapf(err, "start key should be encoded in %s mode", keyType) | ||
| } | ||
| } | ||
| if len(end) > 0 { | ||
| if _, _, err = codec.DecodeBytes(end); err != nil { | ||
| return errors.Wrapf(err, "end key should be encoded in %s mode", keyType) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func (h *ruleHandler) Delete(w http.ResponseWriter, r *http.Request) { | ||
| cluster := h.svr.GetRaftCluster() | ||
| if cluster == nil { | ||
| h.rd.JSON(w, http.StatusInternalServerError, server.ErrNotBootstrapped.Error()) | ||
| return | ||
| } | ||
| if !cluster.IsPlacementRulesEnabled() { | ||
| h.rd.JSON(w, http.StatusPreconditionFailed, errPlacementDisabled.Error()) | ||
| return | ||
| } | ||
| group, id := mux.Vars(r)["group"], mux.Vars(r)["id"] | ||
| if err := cluster.GetRuleManager().DeleteRule(group, id); err != nil { | ||
| h.rd.JSON(w, http.StatusInternalServerError, err.Error()) | ||
| return | ||
| } | ||
| h.rd.JSON(w, http.StatusOK, nil) | ||
| } |