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// Copyright (C) MongoDB, Inc. 2023-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 integration
import (
"context"
"fmt"
"net"
"net/url"
"os/exec"
"strconv"
"testing"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/event"
"go.mongodb.org/mongo-driver/internal/assert"
"go.mongodb.org/mongo-driver/internal/require"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/integration/mtest"
"go.mongodb.org/mongo-driver/mongo/options"
"go.mongodb.org/mongo-driver/x/bsonx/bsoncore"
)
type mongocryptdProcess struct {
cmd *exec.Cmd
}
// start will start a mongocryptd server in the background on the OS.
func (p *mongocryptdProcess) start(port int) error {
args := []string{
"mongocryptd",
"--port", strconv.Itoa(port),
}
p.cmd = exec.Command(args[0], args[1:]...) //nolint:gosec
p.cmd.Stderr = p.cmd.Stdout
return p.cmd.Start()
}
// close will kill the underlying process on the command.
func (p *mongocryptdProcess) close() error {
if p.cmd.Process == nil {
return nil
}
if err := p.cmd.Process.Kill(); err != nil {
return fmt.Errorf("failed to terminate mongocryptd process: %w", err)
}
// Release instead of wait to avoid blocking in CI.
err := p.cmd.Process.Release()
if err != nil {
return fmt.Errorf("failed to release mongocryptd: %w", err)
}
return nil
}
// newTestSessionMongocryptdProseClient will Create the client using the mongo
// API rather than mtest. mtest will attempt to create a collection as
// a database operation, which will not work on a mongocryptd server. A
// mongocryptd server does not support operations on a database.
func newTestSessionMongocryptdProseClient(mt *mtest.T) *mongo.Client {
const mongocryptdPort = 27022
// Monitor the lsid value on commands. If an operation run in any
// subtests contains an lsid, then the Go Driver wire message
// construction has incorrectly interpreted that
// LogicalSessionTimeoutMinutes was returned by the server on handshake.
cmdMonitor := &event.CommandMonitor{
Started: func(_ context.Context, evt *event.CommandStartedEvent) {
_, err := evt.Command.LookupErr("lsid")
assert.ErrorIs(mt, err, bsoncore.ErrElementNotFound)
},
}
uri := &url.URL{
Scheme: "mongodb",
Host: net.JoinHostPort("localhost", strconv.Itoa(mongocryptdPort)),
}
proc := mongocryptdProcess{}
// Start a mongocryptd server.
err := proc.start(mongocryptdPort)
require.NoError(mt, err, "failed to create a mongocryptd process: %v", err)
mt.Cleanup(func() {
err := proc.close()
require.NoError(mt, err, "failed to close mongocryptd: %v", err)
})
clientOpts := options.
Client().
ApplyURI(uri.String()).
SetMonitor(cmdMonitor)
ctx := context.Background()
client, err := mongo.Connect(ctx, clientOpts)
require.NoError(mt, err, "could not connect to mongocryptd: %v", err)
return client
}
func TestSessionsMongocryptdProse(t *testing.T) {
mtOpts := mtest.NewOptions().
MinServerVersion("4.2").
Topologies(mtest.ReplicaSet, mtest.Sharded).
CreateCollection(false).
CreateClient(false)
// Create a new instance of mtest (MongoDB testing framework) for this
// test and configure it to control server versions.
mt := mtest.New(t, mtOpts)
proseTest18 := "18. implicit session is ignored if connection does not support sessions"
mt.RunOpts(proseTest18, mtOpts, func(mt *mtest.T) {
client := newTestSessionMongocryptdProseClient(mt)
mt.Cleanup(func() {
err := client.Disconnect(context.Background())
require.NoError(mt, err, "mongocryptd client could not disconnect: %v", err)
})
coll := client.Database("db").Collection("coll")
// Send a read command to the server (e.g., findOne), ignoring
// any errors from the server response
mt.RunOpts("read", mtOpts, func(_ *mtest.T) {
_ = coll.FindOne(context.Background(), bson.D{{"x", 1}})
})
// Send a write command to the server (e.g., insertOne),
// ignoring any errors from the server response
mt.RunOpts("write", mtOpts, func(_ *mtest.T) {
_, _ = coll.InsertOne(context.Background(), bson.D{{"x", 1}})
})
})
proseTest19 := "19. explicit session raises an error if connection does not support sessions"
mt.RunOpts(proseTest19, mtOpts, func(mt *mtest.T) {
client := newTestSessionMongocryptdProseClient(mt)
mt.Cleanup(func() {
err := client.Disconnect(context.Background())
require.NoError(mt, err, "mongocryptd client could not disconnect: %v", err)
})
// Create a new explicit session by calling startSession (this
// MUST NOT error).
session, err := client.StartSession()
require.NoError(mt, err, "expected error to be nil, got %v", err)
defer session.EndSession(context.Background())
sessionCtx := mongo.NewSessionContext(context.TODO(), session)
err = session.StartTransaction()
require.NoError(mt, err, "expected error to be nil, got %v", err)
coll := client.Database("db").Collection("coll")
// Attempt to send a read command to the server (e.g., findOne)
// with the explicit session passed in.
mt.RunOpts("read", mtOpts, func(mt *mtest.T) {
// Assert that a client-side error is generated
// indicating that sessions are not supported
res := coll.FindOne(sessionCtx, bson.D{{"x", 1}})
assert.EqualError(mt, res.Err(), "current topology does not support sessions")
})
// Attempt to send a write command to the server (e.g.,
// ``insertOne``) with the explicit session passed in.
mt.RunOpts("write", mtOpts, func(mt *mtest.T) {
// Assert that a client-side error is generated
// indicating that sessions are not supported.
res := coll.FindOne(sessionCtx, bson.D{{"x", 1}})
assert.EqualError(mt, res.Err(), "current topology does not support sessions")
})
})
}
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