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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 integration
import (
"context"
"testing"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/internal/assert"
"go.mongodb.org/mongo-driver/internal/eventtest"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/integration/mtest"
"go.mongodb.org/mongo-driver/mongo/options"
)
const (
errorNotPrimary int32 = 10107
errorShutdownInProgress int32 = 91
errorInterruptedAtShutdown int32 = 11600
)
func TestConnectionsSurvivePrimaryStepDown(t *testing.T) {
mt := mtest.New(t, mtest.NewOptions().Topologies(mtest.ReplicaSet).CreateClient(false))
getMoreOpts := mtest.NewOptions().MinServerVersion("4.2")
mt.RunOpts("getMore iteration", getMoreOpts, func(mt *mtest.T) {
tpm := eventtest.NewTestPoolMonitor()
mt.ResetClient(options.Client().
SetRetryWrites(false).
SetPoolMonitor(tpm.PoolMonitor))
initCollection(mt, mt.Coll)
cur, err := mt.Coll.Find(context.Background(), bson.D{}, options.Find().SetBatchSize(2))
assert.Nil(mt, err, "Find error: %v", err)
defer cur.Close(context.Background())
assert.True(mt, cur.Next(context.Background()), "expected Next true, got false")
// replSetStepDown can fail with transient errors, so we use executeAdminCommandWithRetry to handle them and
// retry until a timeout is hit.
stepDownCmd := bson.D{
{"replSetStepDown", 5},
{"force", true},
}
stepDownOpts := options.RunCmd().SetReadPreference(mtest.PrimaryRp)
executeAdminCommandWithRetry(mt, mt.Client, stepDownCmd, stepDownOpts)
assert.True(mt, cur.Next(context.Background()), "expected Next true, got false")
assert.False(mt, tpm.IsPoolCleared(), "expected pool to not be cleared but was")
})
mt.RunOpts("server errors", noClientOpts, func(mt *mtest.T) {
testCases := []struct {
name string
minVersion, maxVersion string
errCode int32
poolCleared bool
}{
{"notPrimary keep pool", "4.2", "", errorNotPrimary, false},
{"notPrimary reset pool", "4.0", "4.0", errorNotPrimary, true},
{"shutdown in progress reset pool", "4.0", "", errorShutdownInProgress, true},
{"interrupted at shutdown reset pool", "4.0", "", errorInterruptedAtShutdown, true},
}
for _, tc := range testCases {
opts := mtest.NewOptions()
if tc.minVersion != "" {
opts.MinServerVersion(tc.minVersion)
}
if tc.maxVersion != "" {
opts.MaxServerVersion(tc.maxVersion)
}
mt.RunOpts(tc.name, opts, func(mt *mtest.T) {
tpm := eventtest.NewTestPoolMonitor()
mt.ResetClient(options.Client().
SetRetryWrites(false).
SetPoolMonitor(tpm.PoolMonitor).
// Use a low heartbeat frequency so the Client will quickly recover when using
// failpoints that cause SDAM state changes.
SetHeartbeatInterval(defaultHeartbeatInterval))
mt.SetFailPoint(mtest.FailPoint{
ConfigureFailPoint: "failCommand",
Mode: mtest.FailPointMode{
Times: 1,
},
Data: mtest.FailPointData{
FailCommands: []string{"insert"},
ErrorCode: tc.errCode,
},
})
_, err := mt.Coll.InsertOne(context.Background(), bson.D{{"test", 1}})
assert.NotNil(mt, err, "expected InsertOne error, got nil")
cerr, ok := err.(mongo.CommandError)
assert.True(mt, ok, "expected error type %v, got %v", mongo.CommandError{}, err)
assert.Equal(mt, tc.errCode, cerr.Code, "expected error code %v, got %v", tc.errCode, cerr.Code)
if tc.poolCleared {
assert.True(mt, tpm.IsPoolCleared(), "expected pool to be cleared but was not")
return
}
// if pool shouldn't be cleared, another operation should succeed
_, err = mt.Coll.InsertOne(context.Background(), bson.D{{"test", 1}})
assert.Nil(mt, err, "InsertOne error: %v", err)
assert.False(mt, tpm.IsPoolCleared(), "expected pool to not be cleared but was")
})
}
})
}
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