/
coordinatorblocker.go
71 lines (65 loc) · 2.39 KB
/
coordinatorblocker.go
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// Copyright 2022 PayPal Inc.
//
// Licensed to the Apache Software Foundation (ASF) under one or more
// contributor license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright ownership.
// The ASF licenses this file to You 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,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package lib
import (
"fmt"
"github.com/paypal/hera/cal"
"github.com/paypal/hera/common"
"github.com/paypal/hera/utility"
"github.com/paypal/hera/utility/encoding/netstring"
)
func (crd *Coordinator) PreprocessQueryBindBlocker(requests []*netstring.Netstring) (bool, string) {
qbb := GetQueryBindBlockerCfg()
if qbb == nil {
return false, ""
}
sz := len(requests)
var sqltext string
bindPairs := make([]string,0)
for i := 0; i < sz; i++ {
if (requests[i].Cmd == common.CmdPrepare) || (requests[i].Cmd == common.CmdPrepareV2) || (requests[i].Cmd == common.CmdPrepareSpecial) {
sqltext = string(requests[i].Payload)
}
if requests[i].Cmd == common.CmdBindName {
for j:=1; i+j<sz; j++ {
if requests[i+j].Cmd == common.CmdBindNum {
continue
} else if requests[i+j].Cmd == common.CmdBindType {
continue
} else if requests[i+j].Cmd == common.CmdBindValueMaxSize {
continue
} else if requests[i+j].Cmd == common.CmdBindValue {
bindPairs = append(bindPairs, string(requests[i].Payload))
bindPairs = append(bindPairs, string(requests[i+j].Payload))
} else {
// i=3 i+j=5 ---- 3:name 4:value 5:name
i += j-2
break
}
}
} // end if bind name
}
rv, reason := qbb.IsBlocked(sqltext, bindPairs)
if rv {
sqlhashStr := fmt.Sprintf("%d",uint32(utility.GetSQLHash(sqltext)))
caltxn := cal.NewCalTransaction("DBA_QUERY_BIND_BLOCKER", sqlhashStr, /*status*/"1.DB.MANUAL.1", "", cal.DefaultTGName)
caltxn.AddDataStr("val", reason)
caltxn.AddDataStr("raddr", crd.conn.RemoteAddr().String())
caltxn.Completed()
}
return rv, reason
}