89 lines
3.1 KiB
Go
89 lines
3.1 KiB
Go
// Copyright 2019 PingCAP, Inc.
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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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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"context"
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"fmt"
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"sync/atomic"
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"github.com/pingcap/tidb/plugin"
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"github.com/pingcap/tidb/sessionctx/variable"
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)
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// Accumulator of connection
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// It can be increased by 1 after each OnConnectionEvent is triggered.
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var connection int32
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// Validate implements TiDB plugin's Validate SPI.
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func Validate(ctx context.Context, m *plugin.Manifest) error {
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fmt.Println("## conn_ip_example Validate called ##")
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fmt.Printf("---- context: %s\n", ctx)
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fmt.Printf("---- read cfg in validate [key: conn_ip_example_key, value: %s]\n", m.SysVars["conn_ip_example_key"].Value)
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return nil
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}
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// OnInit implements TiDB plugin's OnInit SPI.
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func OnInit(ctx context.Context, manifest *plugin.Manifest) error {
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fmt.Println("## conn_ip_example OnInit called ##")
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fmt.Printf("---- context: %s\n", ctx)
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fmt.Printf("---- read cfg in init [key: conn_ip_example_key, value: %s]\n", manifest.SysVars["conn_ip_example_key"].Value)
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atomic.SwapInt32(&connection, 0)
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return nil
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}
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// OnShutdown implements TiDB plugin's OnShutdown SPI.
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func OnShutdown(ctx context.Context, manifest *plugin.Manifest) error {
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fmt.Println("## conn_ip_examples OnShutdown called ##")
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fmt.Printf("---- context: %s\n", ctx)
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fmt.Printf("---- read cfg in shutdown [key: conn_ip_example_key, value: %s]\n", manifest.SysVars["conn_ip_example_key"].Value)
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atomic.SwapInt32(&connection, 0)
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return nil
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}
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// OnGeneralEvent implements TiDB Audit plugin's OnGeneralEvent SPI.
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func OnGeneralEvent(ctx context.Context, sctx *variable.SessionVars, event plugin.GeneralEvent, cmd string) {
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fmt.Println("## conn_ip_example OnGeneralEvent called ##")
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fmt.Printf("---- new connection by %s\n", ctx.Value("ip"))
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if sctx != nil {
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fmt.Printf("---- session status: %d\n", sctx.Status)
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}
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switch event {
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case plugin.Log:
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fmt.Println("---- event: Log")
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case plugin.Error:
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fmt.Println("---- event: Error")
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case plugin.Result:
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fmt.Println("---- event: Result")
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case plugin.Status:
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fmt.Println("---- event: Status")
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default:
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fmt.Println("---- event: unrecognized")
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}
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fmt.Printf("---- cmd: %s\n", cmd)
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}
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// OnConnectionEvent implements TiDB Audit plugin's OnConnectionEvent SPI.
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func OnConnectionEvent(ctx context.Context, event plugin.ConnectionEvent, info *variable.ConnectionInfo) error {
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var reason string
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if r := ctx.Value(plugin.RejectReasonCtxValue{}); r != nil {
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reason = r.(string)
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}
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fmt.Println("## conn_ip_example onConnectionEvent called ##")
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fmt.Printf("---- conenct event: %s, reason: [%s]\n", event, reason)
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fmt.Printf("---- connection host: %s\n", info.Host)
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atomic.AddInt32(&connection, 1)
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return nil
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}
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