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package main
import (
"context"
"fmt"
"time"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
)
const (
dbName string = "test"
colName string = "pids"
)
func deal() {
defer wg.Done()
var cooked Event
var ok bool
var err error
var mongo *mongo.Client
var res []bson.M
mongo, err = connect()
if err != nil {
fmt.Printf("Err connecting the mongodb: %v\n", err)
}
pidCol := mongo.Database(dbName).Collection(colName)
err = pidCol.Drop(context.Background())
if err != nil {
fmt.Printf("Err drop: %v\n", err)
}
_, err = pidCol.InsertOne(context.Background(), bson.M{
"ppid": 1,
"pid": containerdPid,
"cwd": "/",
})
if err != nil {
fmt.Printf("Err containerd: %v", err)
return
}
fmt.Printf("Containerd: %d\n", containerdPid)
for {
cooked, ok = <-cookedChan
if !ok {
break
}
switch syscallTable[cooked.syscall] {
case "fork", "vfork", "clone":
// 有无父进程在观察中
res, err = findDocuments(mongo, "test", "pids", bson.M{"pid": cooked.ppid})
if err != nil || len(res) != 1 {
break
}
// 自身是否已经记录
res, err = findDocuments(mongo, "test", "pids", bson.M{"pid": cooked.pid})
if err != nil {
fmt.Printf("Err finding: %v\n", err)
break
} else if len(res) != 0 {
fmt.Printf("Err inserting pid %v: already in db: %v\n", cooked.pid, res)
break
}
doc := []bson.A{}
for _, str := range cooked.argv {
doc = append(doc, bson.A{str})
}
_, err := pidCol.InsertOne(context.Background(), bson.M{
"timestamp": cooked.timestamp,
"ppid": cooked.ppid,
"pid": cooked.pid,
"cwd": cooked.cwd,
"args": doc,
"children": []bson.M{},
})
if err != nil {
fmt.Printf("Err insert: %v\n", err)
}
_, err = pidCol.UpdateOne(context.Background(), bson.M{"pid": cooked.pid}, bson.M{
"$push": bson.M{
"children": cooked.pid,
},
})
if err != nil {
fmt.Printf("Err insert: %v\n", err)
}
case "exit", "exit_group":
// TODO: 记得补全退出逻辑
// 上哪找exit code呢？
}
}
}
func connect() (*mongo.Client, error) {
client, err := mongo.NewClient(options.Client().ApplyURI("mongodb://localhost:27017"))
if err != nil {
return nil, err
}
ctx, _ := context.WithTimeout(context.Background(), 10*time.Second)
err = client.Connect(ctx)
if err != nil {
return nil, err
}
return client, nil
}
func findDocuments(client *mongo.Client, dbName, colName string, filter bson.M) ([]bson.M, error) {
collection := client.Database(dbName).Collection(colName)
cur, err := collection.Find(context.Background(), filter)
if err != nil {
return nil, err
}
var results []bson.M
err = cur.All(context.Background(), &results)
return results, err
}
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