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Commit854044e

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chore: fix concurrentCommitQuota transactions for unrelated users/orgs (#15261)
The failure condition being fixed is `w1` and `w2` could belongto different users, organizations, and templates and still cause aserializable failure if run concurrently. This is because the old query did a `seq scan` on the `workspace_builds` table. Since that is the table being updated, we really want to prevent that.So before this would fail for any 2 workspaces. Now it only fails if`w1` and `w2` are owned by the same user and organization.
1 parent47f9a8a commit854044e

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15 files changed

+982
-23
lines changed

15 files changed

+982
-23
lines changed

‎coderd/database/db.go‎

Lines changed: 28 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -28,6 +28,7 @@ type Store interface {
2828
wrapper
2929

3030
Ping(ctx context.Context) (time.Duration,error)
31+
PGLocks(ctx context.Context) (PGLocks,error)
3132
InTx(func(Store)error,*TxOptions)error
3233
}
3334

@@ -48,13 +49,26 @@ type DBTX interface {
4849
GetContext(ctx context.Context,destinterface{},querystring,args...interface{})error
4950
}
5051

52+
funcWithSerialRetryCount(countint)func(*sqlQuerier) {
53+
returnfunc(q*sqlQuerier) {
54+
q.serialRetryCount=count
55+
}
56+
}
57+
5158
// New creates a new database store using a SQL database connection.
52-
funcNew(sdb*sql.DB)Store {
59+
funcNew(sdb*sql.DB,opts...func(*sqlQuerier))Store {
5360
dbx:=sqlx.NewDb(sdb,"postgres")
54-
return&sqlQuerier{
61+
q:=&sqlQuerier{
5562
db:dbx,
5663
sdb:dbx,
64+
// This is an arbitrary number.
65+
serialRetryCount:3,
66+
}
67+
68+
for_,opt:=rangeopts {
69+
opt(q)
5770
}
71+
returnq
5872
}
5973

6074
// TxOptions is used to pass some execution metadata to the callers.
@@ -104,6 +118,10 @@ type querier interface {
104118
typesqlQuerierstruct {
105119
sdb*sqlx.DB
106120
dbDBTX
121+
122+
// serialRetryCount is the number of times to retry a transaction
123+
// if it fails with a serialization error.
124+
serialRetryCountint
107125
}
108126

109127
func (*sqlQuerier)Wrappers() []string {
@@ -143,11 +161,9 @@ func (q *sqlQuerier) InTx(function func(Store) error, txOpts *TxOptions) error {
143161
// If we are in a transaction already, the parent InTx call will handle the retry.
144162
// We do not want to duplicate those retries.
145163
if!inTx&&sqlOpts.Isolation==sql.LevelSerializable {
146-
// This is an arbitrarily chosen number.
147-
constretryAmount=3
148164
varerrerror
149165
attempts:=0
150-
forattempts=0;attempts<retryAmount;attempts++ {
166+
forattempts=0;attempts<q.serialRetryCount;attempts++ {
151167
txOpts.executionCount++
152168
err=q.runTx(function,sqlOpts)
153169
iferr==nil {
@@ -203,3 +219,10 @@ func (q *sqlQuerier) runTx(function func(Store) error, txOpts *sql.TxOptions) er
203219
}
204220
returnnil
205221
}
222+
223+
funcsafeString(s*string)string {
224+
ifs==nil {
225+
return"<nil>"
226+
}
227+
return*s
228+
}

‎coderd/database/dbauthz/dbauthz.go‎

Lines changed: 4 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -627,6 +627,10 @@ func (q *querier) Ping(ctx context.Context) (time.Duration, error) {
627627
returnq.db.Ping(ctx)
628628
}
629629

630+
func (q*querier)PGLocks(ctx context.Context) (database.PGLocks,error) {
631+
returnq.db.PGLocks(ctx)
632+
}
633+
630634
// InTx runs the given function in a transaction.
631635
func (q*querier)InTx(functionfunc(querier database.Store)error,txOpts*database.TxOptions)error {
632636
returnq.db.InTx(func(tx database.Store)error {

‎coderd/database/dbauthz/dbauthz_test.go‎

Lines changed: 4 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -152,7 +152,10 @@ func TestDBAuthzRecursive(t *testing.T) {
152152
fori:=2;i<method.Type.NumIn();i++ {
153153
ins=append(ins,reflect.New(method.Type.In(i)).Elem())
154154
}
155-
ifmethod.Name=="InTx"||method.Name=="Ping"||method.Name=="Wrappers" {
155+
ifmethod.Name=="InTx"||
156+
method.Name=="Ping"||
157+
method.Name=="Wrappers"||
158+
method.Name=="PGLocks" {
156159
continue
157160
}
158161
// Log the name of the last method, so if there is a panic, it is

‎coderd/database/dbauthz/setup_test.go‎

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -34,6 +34,7 @@ var errMatchAny = xerrors.New("match any error")
3434
varskipMethods=map[string]string{
3535
"InTx":"Not relevant",
3636
"Ping":"Not relevant",
37+
"PGLocks":"Not relevant",
3738
"Wrappers":"Not relevant",
3839
"AcquireLock":"Not relevant",
3940
"TryAcquireLock":"Not relevant",

‎coderd/database/dbfake/builder.go‎

Lines changed: 127 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,127 @@
1+
package dbfake
2+
3+
import (
4+
"testing"
5+
6+
"github.com/google/uuid"
7+
"github.com/stretchr/testify/require"
8+
9+
"github.com/coder/coder/v2/coderd/database"
10+
"github.com/coder/coder/v2/coderd/database/dbauthz"
11+
"github.com/coder/coder/v2/coderd/database/dbgen"
12+
"github.com/coder/coder/v2/coderd/database/dbtime"
13+
"github.com/coder/coder/v2/testutil"
14+
)
15+
16+
typeOrganizationBuilderstruct {
17+
t*testing.T
18+
db database.Store
19+
seed database.Organization
20+
allUsersAllowanceint32
21+
members []uuid.UUID
22+
groupsmap[database.Group][]uuid.UUID
23+
}
24+
25+
funcOrganization(t*testing.T,db database.Store)OrganizationBuilder {
26+
returnOrganizationBuilder{
27+
t:t,
28+
db:db,
29+
members: []uuid.UUID{},
30+
groups:make(map[database.Group][]uuid.UUID),
31+
}
32+
}
33+
34+
typeOrganizationResponsestruct {
35+
Org database.Organization
36+
AllUsersGroup database.Group
37+
Members []database.OrganizationMember
38+
Groups []database.Group
39+
}
40+
41+
func (bOrganizationBuilder)EveryoneAllowance(allowanceint)OrganizationBuilder {
42+
//nolint: revive // returns modified struct
43+
b.allUsersAllowance=int32(allowance)
44+
returnb
45+
}
46+
47+
func (bOrganizationBuilder)Seed(seed database.Organization)OrganizationBuilder {
48+
//nolint: revive // returns modified struct
49+
b.seed=seed
50+
returnb
51+
}
52+
53+
func (bOrganizationBuilder)Members(users...database.User)OrganizationBuilder {
54+
for_,u:=rangeusers {
55+
//nolint: revive // returns modified struct
56+
b.members=append(b.members,u.ID)
57+
}
58+
returnb
59+
}
60+
61+
func (bOrganizationBuilder)Group(seed database.Group,members...database.User)OrganizationBuilder {
62+
//nolint: revive // returns modified struct
63+
b.groups[seed]= []uuid.UUID{}
64+
for_,u:=rangemembers {
65+
//nolint: revive // returns modified struct
66+
b.groups[seed]=append(b.groups[seed],u.ID)
67+
}
68+
returnb
69+
}
70+
71+
func (bOrganizationBuilder)Do()OrganizationResponse {
72+
org:=dbgen.Organization(b.t,b.db,b.seed)
73+
74+
ctx:=testutil.Context(b.t,testutil.WaitShort)
75+
//nolint:gocritic // builder code needs perms
76+
ctx=dbauthz.AsSystemRestricted(ctx)
77+
everyone,err:=b.db.InsertAllUsersGroup(ctx,org.ID)
78+
require.NoError(b.t,err)
79+
80+
ifb.allUsersAllowance>0 {
81+
everyone,err=b.db.UpdateGroupByID(ctx, database.UpdateGroupByIDParams{
82+
Name:everyone.Name,
83+
DisplayName:everyone.DisplayName,
84+
AvatarURL:everyone.AvatarURL,
85+
QuotaAllowance:b.allUsersAllowance,
86+
ID:everyone.ID,
87+
})
88+
require.NoError(b.t,err)
89+
}
90+
91+
members:=make([]database.OrganizationMember,0)
92+
iflen(b.members)>0 {
93+
for_,u:=rangeb.members {
94+
newMem:=dbgen.OrganizationMember(b.t,b.db, database.OrganizationMember{
95+
UserID:u,
96+
OrganizationID:org.ID,
97+
CreatedAt:dbtime.Now(),
98+
UpdatedAt:dbtime.Now(),
99+
Roles:nil,
100+
})
101+
members=append(members,newMem)
102+
}
103+
}
104+
105+
groups:=make([]database.Group,0)
106+
iflen(b.groups)>0 {
107+
forg,users:=rangeb.groups {
108+
g.OrganizationID=org.ID
109+
group:=dbgen.Group(b.t,b.db,g)
110+
groups=append(groups,group)
111+
112+
for_,u:=rangeusers {
113+
dbgen.GroupMember(b.t,b.db, database.GroupMemberTable{
114+
UserID:u,
115+
GroupID:group.ID,
116+
})
117+
}
118+
}
119+
}
120+
121+
returnOrganizationResponse{
122+
Org:org,
123+
AllUsersGroup:everyone,
124+
Members:members,
125+
Groups:groups,
126+
}
127+
}

‎coderd/database/dbgen/dbgen.go‎

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -408,6 +408,8 @@ func OrganizationMember(t testing.TB, db database.Store, orig database.Organizat
408408
}
409409

410410
funcGroup(t testing.TB,db database.Store,orig database.Group) database.Group {
411+
t.Helper()
412+
411413
name:=takeFirst(orig.Name,testutil.GetRandomName(t))
412414
group,err:=db.InsertGroup(genCtx, database.InsertGroupParams{
413415
ID:takeFirst(orig.ID,uuid.New()),

‎coderd/database/dbmem/dbmem.go‎

Lines changed: 4 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -339,6 +339,10 @@ func (*FakeQuerier) Ping(_ context.Context) (time.Duration, error) {
339339
return0,nil
340340
}
341341

342+
func (*FakeQuerier)PGLocks(_ context.Context) (database.PGLocks,error) {
343+
return []database.PGLock{},nil
344+
}
345+
342346
func (tx*fakeTx)AcquireLock(_ context.Context,idint64)error {
343347
if_,ok:=tx.FakeQuerier.locks[id];ok {
344348
returnxerrors.Errorf("cannot acquire lock %d: already held",id)

‎coderd/database/dbmetrics/querymetrics.go‎

Lines changed: 7 additions & 0 deletions
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‎coderd/database/dbmock/dbmock.go‎

Lines changed: 15 additions & 0 deletions
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‎coderd/database/dbtestutil/db.go‎

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -135,7 +135,8 @@ func NewDB(t testing.TB, opts ...Option) (database.Store, pubsub.Pubsub) {
135135
ifo.dumpOnFailure {
136136
t.Cleanup(func() {DumpOnFailure(t,connectionURL) })
137137
}
138-
db=database.New(sqlDB)
138+
// Unit tests should not retry serial transaction failures.
139+
db=database.New(sqlDB,database.WithSerialRetryCount(1))
139140

140141
ps,err=pubsub.New(context.Background(),o.logger,sqlDB,connectionURL)
141142
require.NoError(t,err)

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