/
postgres.go
219 lines (195 loc) · 6.39 KB
/
postgres.go
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// package dockertestenv provides test environment where service dependencies are docker containers
package dockertestenv
import (
"context"
"os"
"sync"
"testing"
"time"
"github.com/pachyderm/pachyderm/v2/src/internal/backoff"
"github.com/pachyderm/pachyderm/v2/src/internal/dbutil"
"github.com/pachyderm/pachyderm/v2/src/internal/errors"
"github.com/pachyderm/pachyderm/v2/src/internal/log"
"github.com/pachyderm/pachyderm/v2/src/internal/pachconfig"
"github.com/pachyderm/pachyderm/v2/src/internal/pachsql"
"github.com/pachyderm/pachyderm/v2/src/internal/pctx"
"github.com/pachyderm/pachyderm/v2/src/internal/require"
"github.com/pachyderm/pachyderm/v2/src/internal/testutil"
"go.uber.org/zap"
)
const (
postgresPort = 30228
PGBouncerPort = 30229
maxOpenConns = 10
DefaultPostgresPassword = "correcthorsebatterystable"
DefaultPostgresUser = "pachyderm"
DefaultPostgresDatabase = "pachyderm"
)
func postgresHost() string {
return getDockerHost()
}
func PGBouncerHost() string {
return postgresHost()
}
type PostgresConfig struct {
Host string
Port uint16
User string
Password string
DBName string
}
func (pgc PostgresConfig) DBOptions() []dbutil.Option {
return []dbutil.Option{
dbutil.WithMaxOpenConns(10),
dbutil.WithUserPassword(pgc.User, pgc.Password),
dbutil.WithHostPort(pgc.Host, int(pgc.Port)),
dbutil.WithDBName(pgc.DBName),
}
}
type DBConfig struct {
Direct PostgresConfig
PGBouncer PostgresConfig
Identity PostgresConfig
}
func (dbc DBConfig) PachConfigOption(c *pachconfig.Configuration) {
// common
c.PostgresDBName = dbc.PGBouncer.DBName
c.IdentityServerDatabase = dbc.Identity.DBName
c.PostgresUser = dbc.PGBouncer.User
c.PostgresPassword = dbc.PGBouncer.Password
// direct
c.PostgresHost = dbc.Direct.Host
c.PostgresPort = int(dbc.Direct.Port)
// pg_bouncer
c.PGBouncerHost = dbc.PGBouncer.Host
c.PGBouncerPort = int(dbc.PGBouncer.Port)
}
// NewTestDBConfig returns a DBConfig for a test environment
// The environment will be torn down at the end of the test.
func NewTestDBConfig(t testing.TB) DBConfig {
var (
ctx = pctx.TestContext(t)
dbName = testutil.GenerateEphemeralDBName(t)
dexName = testutil.UniqueString("dex")
)
err := backoff.Retry(func() error {
return EnsureDBEnv(ctx)
}, backoff.NewConstantBackOff(time.Second*3))
require.NoError(t, err, "DB should be created")
db := testutil.OpenDB(t,
dbutil.WithMaxOpenConns(1),
dbutil.WithUserPassword(DefaultPostgresUser, DefaultPostgresPassword),
dbutil.WithHostPort(PGBouncerHost(), PGBouncerPort),
dbutil.WithDBName(DefaultPostgresDatabase),
)
testutil.CreateEphemeralDB(t, db, dbName)
testutil.CreateEphemeralDB(t, db, dexName)
return DBConfig{
Direct: PostgresConfig{
Host: postgresHost(),
Port: postgresPort,
User: DefaultPostgresUser,
Password: DefaultPostgresPassword,
DBName: dbName,
},
PGBouncer: PostgresConfig{
Host: PGBouncerHost(),
Port: PGBouncerPort,
User: DefaultPostgresUser,
Password: DefaultPostgresPassword,
DBName: dbName,
},
Identity: PostgresConfig{
Host: PGBouncerHost(),
Port: PGBouncerPort,
User: DefaultPostgresUser,
Password: DefaultPostgresPassword,
DBName: dexName,
},
}
}
// NewTestDB creates a new database connection scoped to the test.
func NewTestDB(t testing.TB) *pachsql.DB {
cfg := NewTestDBConfig(t)
return testutil.OpenDB(t, cfg.PGBouncer.DBOptions()...)
}
func NewTestDirectDB(t testing.TB) *pachsql.DB {
cfg := NewTestDBConfig(t)
return testutil.OpenDB(t, cfg.Direct.DBOptions()...)
}
// NewEphemeralPostgresDB creates a randomly-named new database, returning a
// connection to the new DB and the name itself.
func NewEphemeralPostgresDB(ctx context.Context, t testing.TB) (*pachsql.DB, string) {
c := NewTestDBConfig(t)
return testutil.OpenDB(t, c.Direct.DBOptions()...), c.Direct.DBName
}
var spawnLock sync.Mutex
// TODO: use the docker client, instead of the bash script
// TODO: use the bitnami pg_bouncer image
// TODO: look into https://github.com/ory/dockertest
func EnsureDBEnv(ctx context.Context) error {
// bazel run //src/testing/cmd/dockertestenv creates these for many CI runs.
if got, want := os.Getenv("SKIP_DOCKER_POSTGRES_CREATE"), "1"; got == want {
log.Info(ctx, "not attempting to create docker container; SKIP_DOCKER_POSTGRES_CREATE=1")
return nil
}
spawnLock.Lock()
defer spawnLock.Unlock()
timeout := 120 * time.Second
ctx, cf := context.WithTimeout(ctx, timeout)
defer cf()
dclient := newDockerClient()
defer dclient.Close()
if err := ensureContainer(ctx, dclient, "pach_test_postgres", containerSpec{
Env: map[string]string{
"POSTGRES_DB": "pachyderm",
"POSTGRES_USER": "pachyderm",
"POSTGRES_HOST_AUTH_METHOD": "trust",
},
PortMap: map[uint16]uint16{
30228: 5432,
},
Image: "postgres:13.0-alpine",
Cmd: []string{"postgres", "-c", "max_connections=500", "-c", "fsync=off"},
}); err != nil {
return errors.EnsureStack(err)
}
containerJSON, err := dclient.ContainerInspect(ctx, "pach_test_postgres")
if err != nil {
return errors.EnsureStack(err)
}
postgresIP := containerJSON.NetworkSettings.IPAddress
if err := ensureContainer(ctx, dclient, "pach_test_pgbouncer", containerSpec{
Env: map[string]string{
"PGBOUNCER_AUTH_TYPE": "any",
"POSTGRESQL_USERNAME": "pachyderm",
"POSTGRESQL_PASSWORD": "password",
"POSTGRESQL_HOST": postgresIP,
"POSTGRESQL_PORT": "5432",
"PGBOUNCER_MAX_CLIENT_CONN": "100000",
"PGBOUNCER_POOL_MODE": "transaction",
"PGBOUNCER_IGNORE_STARTUP_PARAMETERS": "extra_float_digits",
},
PortMap: map[uint16]uint16{
30229: 5432,
},
Image: "pachyderm/pgbouncer:1.16.2",
}); err != nil {
return errors.EnsureStack(err)
}
return backoff.RetryUntilCancel(ctx, func() error {
db, err := dbutil.NewDB(
dbutil.WithDBName(DefaultPostgresDatabase),
dbutil.WithHostPort(PGBouncerHost(), PGBouncerPort),
dbutil.WithUserPassword(DefaultPostgresUser, DefaultPostgresPassword),
)
if err != nil {
log.Info(ctx, "failed to connect to database; retrying", zap.Error(err))
return errors.Wrap(err, "connect to db")
}
defer db.Close()
return errors.Wrap(db.PingContext(ctx), "ping db")
}, backoff.RetryEvery(time.Second), func(err error, _ time.Duration) error {
return nil
})
}