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// Copyright (C) MongoDB, Inc. 2017-present.
//
// 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
package main
import (
"context"
"log"
"time"
"flag"
"go.mongodb.org/mongo-driver/mongo/description"
"go.mongodb.org/mongo-driver/x/bsonx/bsoncore"
"go.mongodb.org/mongo-driver/x/mongo/driver/connstring"
"go.mongodb.org/mongo-driver/x/mongo/driver/operation"
"go.mongodb.org/mongo-driver/x/mongo/driver/topology"
)
var uri = flag.String("uri", "mongodb://localhost:27017", "the mongodb uri to use")
var col = flag.String("c", "test", "the collection name to use")
func main() {
flag.Parse()
if *uri == "" {
log.Fatalf("uri flag must have a value")
}
cs, err := connstring.ParseAndValidate(*uri)
if err != nil {
log.Fatal(err)
}
t, err := topology.New(topology.WithConnString(func(connstring.ConnString) connstring.ConnString { return cs }))
if err != nil {
log.Fatal(err)
}
err = t.Connect()
if err != nil {
log.Fatal(err)
}
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()
dbname := cs.Database
if dbname == "" {
dbname = "test"
}
op := operation.NewCommand(bsoncore.BuildDocument(nil, bsoncore.AppendStringElement(nil, "count", *col))).
Deployment(t).Database(dbname).ServerSelector(description.WriteSelector())
err = op.Execute(ctx)
if err != nil {
log.Fatalf("failed executing count command on %s.%s: %v", dbname, *col, err)
}
rdr := op.Result()
log.Println(rdr)
}
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