mirror of
https://github.com/etcd-io/etcd.git
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485 lines
16 KiB
Go
485 lines
16 KiB
Go
// Copyright 2016 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package apply
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import (
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"context"
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"go.uber.org/zap"
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pb "go.etcd.io/etcd/api/v3/etcdserverpb"
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"go.etcd.io/etcd/api/v3/membershippb"
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"go.etcd.io/etcd/client/pkg/v3/types"
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"go.etcd.io/etcd/pkg/v3/traceutil"
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"go.etcd.io/etcd/server/v3/auth"
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"go.etcd.io/etcd/server/v3/etcdserver/api"
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"go.etcd.io/etcd/server/v3/etcdserver/api/membership"
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"go.etcd.io/etcd/server/v3/etcdserver/api/v3alarm"
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"go.etcd.io/etcd/server/v3/etcdserver/cindex"
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"go.etcd.io/etcd/server/v3/etcdserver/errors"
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mvcctxn "go.etcd.io/etcd/server/v3/etcdserver/txn"
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"go.etcd.io/etcd/server/v3/etcdserver/version"
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"go.etcd.io/etcd/server/v3/lease"
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serverstorage "go.etcd.io/etcd/server/v3/storage"
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"go.etcd.io/etcd/server/v3/storage/backend"
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"go.etcd.io/etcd/server/v3/storage/mvcc"
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"github.com/coreos/go-semver/semver"
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"github.com/gogo/protobuf/proto"
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)
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const (
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v3Version = "v3"
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)
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// RaftStatusGetter represents etcd server and Raft progress.
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type RaftStatusGetter interface {
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MemberId() types.ID
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Leader() types.ID
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CommittedIndex() uint64
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AppliedIndex() uint64
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Term() uint64
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}
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type Result struct {
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Resp proto.Message
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Err error
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// Physc signals the physical effect of the request has completed in addition
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// to being logically reflected by the node. Currently, only used for
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// Compaction requests.
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Physc <-chan struct{}
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Trace *traceutil.Trace
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}
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type applyFunc func(ctx context.Context, r *pb.InternalRaftRequest, shouldApplyV3 membership.ShouldApplyV3) *Result
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// applierV3 is the interface for processing V3 raft messages
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type applierV3 interface {
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// Apply executes the generic portion of application logic for the current applier, but
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// delegates the actual execution to the applyFunc method.
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Apply(ctx context.Context, r *pb.InternalRaftRequest, shouldApplyV3 membership.ShouldApplyV3, applyFunc applyFunc) *Result
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Put(ctx context.Context, txn mvcc.TxnWrite, p *pb.PutRequest) (*pb.PutResponse, *traceutil.Trace, error)
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Range(ctx context.Context, txn mvcc.TxnRead, r *pb.RangeRequest) (*pb.RangeResponse, error)
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DeleteRange(txn mvcc.TxnWrite, dr *pb.DeleteRangeRequest) (*pb.DeleteRangeResponse, error)
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Txn(ctx context.Context, rt *pb.TxnRequest) (*pb.TxnResponse, *traceutil.Trace, error)
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Compaction(compaction *pb.CompactionRequest) (*pb.CompactionResponse, <-chan struct{}, *traceutil.Trace, error)
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LeaseGrant(lc *pb.LeaseGrantRequest) (*pb.LeaseGrantResponse, error)
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LeaseRevoke(lc *pb.LeaseRevokeRequest) (*pb.LeaseRevokeResponse, error)
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LeaseCheckpoint(lc *pb.LeaseCheckpointRequest) (*pb.LeaseCheckpointResponse, error)
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Alarm(*pb.AlarmRequest) (*pb.AlarmResponse, error)
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Authenticate(r *pb.InternalAuthenticateRequest) (*pb.AuthenticateResponse, error)
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AuthEnable() (*pb.AuthEnableResponse, error)
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AuthDisable() (*pb.AuthDisableResponse, error)
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AuthStatus() (*pb.AuthStatusResponse, error)
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UserAdd(ua *pb.AuthUserAddRequest) (*pb.AuthUserAddResponse, error)
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UserDelete(ua *pb.AuthUserDeleteRequest) (*pb.AuthUserDeleteResponse, error)
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UserChangePassword(ua *pb.AuthUserChangePasswordRequest) (*pb.AuthUserChangePasswordResponse, error)
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UserGrantRole(ua *pb.AuthUserGrantRoleRequest) (*pb.AuthUserGrantRoleResponse, error)
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UserGet(ua *pb.AuthUserGetRequest) (*pb.AuthUserGetResponse, error)
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UserRevokeRole(ua *pb.AuthUserRevokeRoleRequest) (*pb.AuthUserRevokeRoleResponse, error)
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RoleAdd(ua *pb.AuthRoleAddRequest) (*pb.AuthRoleAddResponse, error)
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RoleGrantPermission(ua *pb.AuthRoleGrantPermissionRequest) (*pb.AuthRoleGrantPermissionResponse, error)
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RoleGet(ua *pb.AuthRoleGetRequest) (*pb.AuthRoleGetResponse, error)
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RoleRevokePermission(ua *pb.AuthRoleRevokePermissionRequest) (*pb.AuthRoleRevokePermissionResponse, error)
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RoleDelete(ua *pb.AuthRoleDeleteRequest) (*pb.AuthRoleDeleteResponse, error)
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UserList(ua *pb.AuthUserListRequest) (*pb.AuthUserListResponse, error)
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RoleList(ua *pb.AuthRoleListRequest) (*pb.AuthRoleListResponse, error)
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// processing internal V3 raft request
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ClusterVersionSet(r *membershippb.ClusterVersionSetRequest, shouldApplyV3 membership.ShouldApplyV3)
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ClusterMemberAttrSet(r *membershippb.ClusterMemberAttrSetRequest, shouldApplyV3 membership.ShouldApplyV3)
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DowngradeInfoSet(r *membershippb.DowngradeInfoSetRequest, shouldApplyV3 membership.ShouldApplyV3)
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}
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type SnapshotServer interface {
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ForceSnapshot()
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}
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type applierV3backend struct {
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lg *zap.Logger
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kv mvcc.KV
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alarmStore *v3alarm.AlarmStore
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authStore auth.AuthStore
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lessor lease.Lessor
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cluster *membership.RaftCluster
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raftStatus RaftStatusGetter
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snapshotServer SnapshotServer
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consistentIndex cindex.ConsistentIndexer
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txnModeWriteWithSharedBuffer bool
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}
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func newApplierV3Backend(
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lg *zap.Logger,
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kv mvcc.KV,
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alarmStore *v3alarm.AlarmStore,
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authStore auth.AuthStore,
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lessor lease.Lessor,
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cluster *membership.RaftCluster,
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raftStatus RaftStatusGetter,
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snapshotServer SnapshotServer,
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consistentIndex cindex.ConsistentIndexer,
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txnModeWriteWithSharedBuffer bool) applierV3 {
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return &applierV3backend{
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lg: lg,
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kv: kv,
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alarmStore: alarmStore,
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authStore: authStore,
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lessor: lessor,
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cluster: cluster,
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raftStatus: raftStatus,
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snapshotServer: snapshotServer,
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consistentIndex: consistentIndex,
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txnModeWriteWithSharedBuffer: txnModeWriteWithSharedBuffer}
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}
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func (a *applierV3backend) Apply(ctx context.Context, r *pb.InternalRaftRequest, shouldApplyV3 membership.ShouldApplyV3, applyFunc applyFunc) *Result {
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return applyFunc(ctx, r, shouldApplyV3)
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}
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func (a *applierV3backend) Put(ctx context.Context, txn mvcc.TxnWrite, p *pb.PutRequest) (resp *pb.PutResponse, trace *traceutil.Trace, err error) {
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return mvcctxn.Put(ctx, a.lg, a.lessor, a.kv, txn, p)
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}
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func (a *applierV3backend) DeleteRange(txn mvcc.TxnWrite, dr *pb.DeleteRangeRequest) (*pb.DeleteRangeResponse, error) {
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return mvcctxn.DeleteRange(a.kv, txn, dr)
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}
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func (a *applierV3backend) Range(ctx context.Context, txn mvcc.TxnRead, r *pb.RangeRequest) (*pb.RangeResponse, error) {
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return mvcctxn.Range(ctx, a.lg, a.kv, txn, r)
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}
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func (a *applierV3backend) Txn(ctx context.Context, rt *pb.TxnRequest) (*pb.TxnResponse, *traceutil.Trace, error) {
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return mvcctxn.Txn(ctx, a.lg, rt, a.txnModeWriteWithSharedBuffer, a.kv, a.lessor)
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}
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func (a *applierV3backend) Compaction(compaction *pb.CompactionRequest) (*pb.CompactionResponse, <-chan struct{}, *traceutil.Trace, error) {
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resp := &pb.CompactionResponse{}
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resp.Header = &pb.ResponseHeader{}
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trace := traceutil.New("compact",
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a.lg,
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traceutil.Field{Key: "revision", Value: compaction.Revision},
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)
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ch, err := a.kv.Compact(trace, compaction.Revision)
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if err != nil {
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return nil, ch, nil, err
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}
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// get the current revision. which key to get is not important.
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rr, _ := a.kv.Range(context.TODO(), []byte("compaction"), nil, mvcc.RangeOptions{})
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resp.Header.Revision = rr.Rev
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return resp, ch, trace, err
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}
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func (a *applierV3backend) LeaseGrant(lc *pb.LeaseGrantRequest) (*pb.LeaseGrantResponse, error) {
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l, err := a.lessor.Grant(lease.LeaseID(lc.ID), lc.TTL)
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resp := &pb.LeaseGrantResponse{}
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if err == nil {
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resp.ID = int64(l.ID)
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resp.TTL = l.TTL()
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resp.Header = a.newHeader()
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}
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return resp, err
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}
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func (a *applierV3backend) LeaseRevoke(lc *pb.LeaseRevokeRequest) (*pb.LeaseRevokeResponse, error) {
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err := a.lessor.Revoke(lease.LeaseID(lc.ID))
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return &pb.LeaseRevokeResponse{Header: a.newHeader()}, err
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}
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func (a *applierV3backend) LeaseCheckpoint(lc *pb.LeaseCheckpointRequest) (*pb.LeaseCheckpointResponse, error) {
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for _, c := range lc.Checkpoints {
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err := a.lessor.Checkpoint(lease.LeaseID(c.ID), c.Remaining_TTL)
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if err != nil {
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return &pb.LeaseCheckpointResponse{Header: a.newHeader()}, err
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}
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}
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return &pb.LeaseCheckpointResponse{Header: a.newHeader()}, nil
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}
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func (a *applierV3backend) Alarm(ar *pb.AlarmRequest) (*pb.AlarmResponse, error) {
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resp := &pb.AlarmResponse{}
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switch ar.Action {
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case pb.AlarmRequest_GET:
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resp.Alarms = a.alarmStore.Get(ar.Alarm)
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case pb.AlarmRequest_ACTIVATE:
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if ar.Alarm == pb.AlarmType_NONE {
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break
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}
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m := a.alarmStore.Activate(types.ID(ar.MemberID), ar.Alarm)
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if m == nil {
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break
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}
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resp.Alarms = append(resp.Alarms, m)
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alarms.WithLabelValues(types.ID(ar.MemberID).String(), m.Alarm.String()).Inc()
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case pb.AlarmRequest_DEACTIVATE:
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m := a.alarmStore.Deactivate(types.ID(ar.MemberID), ar.Alarm)
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if m == nil {
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break
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}
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resp.Alarms = append(resp.Alarms, m)
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alarms.WithLabelValues(types.ID(ar.MemberID).String(), m.Alarm.String()).Dec()
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default:
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return nil, nil
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}
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return resp, nil
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}
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type applierV3Capped struct {
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applierV3
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q serverstorage.BackendQuota
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}
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// newApplierV3Capped creates an applyV3 that will reject Puts and transactions
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// with Puts so that the number of keys in the store is capped.
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func newApplierV3Capped(base applierV3) applierV3 { return &applierV3Capped{applierV3: base} }
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func (a *applierV3Capped) Put(_ context.Context, _ mvcc.TxnWrite, _ *pb.PutRequest) (*pb.PutResponse, *traceutil.Trace, error) {
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return nil, nil, errors.ErrNoSpace
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}
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func (a *applierV3Capped) Txn(ctx context.Context, r *pb.TxnRequest) (*pb.TxnResponse, *traceutil.Trace, error) {
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if a.q.Cost(r) > 0 {
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return nil, nil, errors.ErrNoSpace
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}
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return a.applierV3.Txn(ctx, r)
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}
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func (a *applierV3Capped) LeaseGrant(_ *pb.LeaseGrantRequest) (*pb.LeaseGrantResponse, error) {
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return nil, errors.ErrNoSpace
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}
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func (a *applierV3backend) AuthEnable() (*pb.AuthEnableResponse, error) {
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err := a.authStore.AuthEnable()
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if err != nil {
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return nil, err
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}
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return &pb.AuthEnableResponse{Header: a.newHeader()}, nil
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}
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func (a *applierV3backend) AuthDisable() (*pb.AuthDisableResponse, error) {
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a.authStore.AuthDisable()
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return &pb.AuthDisableResponse{Header: a.newHeader()}, nil
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}
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func (a *applierV3backend) AuthStatus() (*pb.AuthStatusResponse, error) {
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enabled := a.authStore.IsAuthEnabled()
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authRevision := a.authStore.Revision()
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return &pb.AuthStatusResponse{Header: a.newHeader(), Enabled: enabled, AuthRevision: authRevision}, nil
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}
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func (a *applierV3backend) Authenticate(r *pb.InternalAuthenticateRequest) (*pb.AuthenticateResponse, error) {
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ctx := context.WithValue(context.WithValue(context.Background(), auth.AuthenticateParamIndex{}, a.consistentIndex.ConsistentIndex()), auth.AuthenticateParamSimpleTokenPrefix{}, r.SimpleToken)
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resp, err := a.authStore.Authenticate(ctx, r.Name, r.Password)
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if resp != nil {
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resp.Header = a.newHeader()
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}
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return resp, err
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}
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func (a *applierV3backend) UserAdd(r *pb.AuthUserAddRequest) (*pb.AuthUserAddResponse, error) {
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resp, err := a.authStore.UserAdd(r)
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if resp != nil {
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resp.Header = a.newHeader()
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}
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return resp, err
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}
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func (a *applierV3backend) UserDelete(r *pb.AuthUserDeleteRequest) (*pb.AuthUserDeleteResponse, error) {
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resp, err := a.authStore.UserDelete(r)
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if resp != nil {
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resp.Header = a.newHeader()
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}
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return resp, err
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}
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func (a *applierV3backend) UserChangePassword(r *pb.AuthUserChangePasswordRequest) (*pb.AuthUserChangePasswordResponse, error) {
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resp, err := a.authStore.UserChangePassword(r)
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if resp != nil {
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resp.Header = a.newHeader()
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}
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return resp, err
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}
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func (a *applierV3backend) UserGrantRole(r *pb.AuthUserGrantRoleRequest) (*pb.AuthUserGrantRoleResponse, error) {
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resp, err := a.authStore.UserGrantRole(r)
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if resp != nil {
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resp.Header = a.newHeader()
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}
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return resp, err
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}
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func (a *applierV3backend) UserGet(r *pb.AuthUserGetRequest) (*pb.AuthUserGetResponse, error) {
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resp, err := a.authStore.UserGet(r)
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if resp != nil {
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resp.Header = a.newHeader()
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}
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return resp, err
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}
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func (a *applierV3backend) UserRevokeRole(r *pb.AuthUserRevokeRoleRequest) (*pb.AuthUserRevokeRoleResponse, error) {
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resp, err := a.authStore.UserRevokeRole(r)
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if resp != nil {
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resp.Header = a.newHeader()
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}
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return resp, err
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}
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func (a *applierV3backend) RoleAdd(r *pb.AuthRoleAddRequest) (*pb.AuthRoleAddResponse, error) {
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resp, err := a.authStore.RoleAdd(r)
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if resp != nil {
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resp.Header = a.newHeader()
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}
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return resp, err
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}
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func (a *applierV3backend) RoleGrantPermission(r *pb.AuthRoleGrantPermissionRequest) (*pb.AuthRoleGrantPermissionResponse, error) {
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resp, err := a.authStore.RoleGrantPermission(r)
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if resp != nil {
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resp.Header = a.newHeader()
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}
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return resp, err
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}
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func (a *applierV3backend) RoleGet(r *pb.AuthRoleGetRequest) (*pb.AuthRoleGetResponse, error) {
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resp, err := a.authStore.RoleGet(r)
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if resp != nil {
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resp.Header = a.newHeader()
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}
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return resp, err
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}
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func (a *applierV3backend) RoleRevokePermission(r *pb.AuthRoleRevokePermissionRequest) (*pb.AuthRoleRevokePermissionResponse, error) {
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resp, err := a.authStore.RoleRevokePermission(r)
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if resp != nil {
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resp.Header = a.newHeader()
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}
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return resp, err
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}
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func (a *applierV3backend) RoleDelete(r *pb.AuthRoleDeleteRequest) (*pb.AuthRoleDeleteResponse, error) {
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resp, err := a.authStore.RoleDelete(r)
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if resp != nil {
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resp.Header = a.newHeader()
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}
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return resp, err
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}
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func (a *applierV3backend) UserList(r *pb.AuthUserListRequest) (*pb.AuthUserListResponse, error) {
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resp, err := a.authStore.UserList(r)
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if resp != nil {
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resp.Header = a.newHeader()
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}
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return resp, err
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}
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func (a *applierV3backend) RoleList(r *pb.AuthRoleListRequest) (*pb.AuthRoleListResponse, error) {
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resp, err := a.authStore.RoleList(r)
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if resp != nil {
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resp.Header = a.newHeader()
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}
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return resp, err
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}
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func (a *applierV3backend) ClusterVersionSet(r *membershippb.ClusterVersionSetRequest, shouldApplyV3 membership.ShouldApplyV3) {
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prevVersion := a.cluster.Version()
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newVersion := semver.Must(semver.NewVersion(r.Ver))
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a.cluster.SetVersion(newVersion, api.UpdateCapability, shouldApplyV3)
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// Force snapshot after cluster version downgrade.
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if prevVersion != nil && newVersion.LessThan(*prevVersion) {
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lg := a.lg
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if lg != nil {
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lg.Info("Cluster version downgrade detected, forcing snapshot",
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zap.String("prev-cluster-version", prevVersion.String()),
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zap.String("new-cluster-version", newVersion.String()),
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)
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}
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a.snapshotServer.ForceSnapshot()
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}
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}
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func (a *applierV3backend) ClusterMemberAttrSet(r *membershippb.ClusterMemberAttrSetRequest, shouldApplyV3 membership.ShouldApplyV3) {
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a.cluster.UpdateAttributes(
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types.ID(r.Member_ID),
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membership.Attributes{
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Name: r.MemberAttributes.Name,
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ClientURLs: r.MemberAttributes.ClientUrls,
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},
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shouldApplyV3,
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)
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}
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func (a *applierV3backend) DowngradeInfoSet(r *membershippb.DowngradeInfoSetRequest, shouldApplyV3 membership.ShouldApplyV3) {
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d := version.DowngradeInfo{Enabled: false}
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if r.Enabled {
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d = version.DowngradeInfo{Enabled: true, TargetVersion: r.Ver}
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}
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a.cluster.SetDowngradeInfo(&d, shouldApplyV3)
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}
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type quotaApplierV3 struct {
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applierV3
|
|
q serverstorage.Quota
|
|
}
|
|
|
|
func newQuotaApplierV3(lg *zap.Logger, quotaBackendBytesCfg int64, be backend.Backend, app applierV3) applierV3 {
|
|
return "aApplierV3{app, serverstorage.NewBackendQuota(lg, quotaBackendBytesCfg, be, "v3-applier")}
|
|
}
|
|
|
|
func (a *quotaApplierV3) Put(ctx context.Context, txn mvcc.TxnWrite, p *pb.PutRequest) (*pb.PutResponse, *traceutil.Trace, error) {
|
|
ok := a.q.Available(p)
|
|
resp, trace, err := a.applierV3.Put(ctx, txn, p)
|
|
if err == nil && !ok {
|
|
err = errors.ErrNoSpace
|
|
}
|
|
return resp, trace, err
|
|
}
|
|
|
|
func (a *quotaApplierV3) Txn(ctx context.Context, rt *pb.TxnRequest) (*pb.TxnResponse, *traceutil.Trace, error) {
|
|
ok := a.q.Available(rt)
|
|
resp, trace, err := a.applierV3.Txn(ctx, rt)
|
|
if err == nil && !ok {
|
|
err = errors.ErrNoSpace
|
|
}
|
|
return resp, trace, err
|
|
}
|
|
|
|
func (a *quotaApplierV3) LeaseGrant(lc *pb.LeaseGrantRequest) (*pb.LeaseGrantResponse, error) {
|
|
ok := a.q.Available(lc)
|
|
resp, err := a.applierV3.LeaseGrant(lc)
|
|
if err == nil && !ok {
|
|
err = errors.ErrNoSpace
|
|
}
|
|
return resp, err
|
|
}
|
|
|
|
func (a *applierV3backend) newHeader() *pb.ResponseHeader {
|
|
return &pb.ResponseHeader{
|
|
ClusterId: uint64(a.cluster.ID()),
|
|
MemberId: uint64(a.raftStatus.MemberId()),
|
|
Revision: a.kv.Rev(),
|
|
RaftTerm: a.raftStatus.Term(),
|
|
}
|
|
}
|