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package psql
import (
"context"
"database/sql"
"flag"
"fmt"
"io/ioutil"
"log"
"os"
"os/signal"
"testing"
"time"
"github.com/adlio/schema"
"github.com/gogo/protobuf/proto"
"github.com/ory/dockertest"
"github.com/ory/dockertest/docker"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/tendermint/tendermint/internal/state/indexer"
"github.com/tendermint/tendermint/types"
// Register the Postgres database driver.
_ "github.com/lib/pq"
)
// Verify that the type satisfies the EventSink interface.
var _ indexer.EventSink = (*EventSink)(nil)
var (
doPauseAtExit = flag.Bool("pause-at-exit", false,
"If true, pause the test until interrupted at shutdown, to allow debugging")
// A hook that test cases can call to obtain the shared database instance
// used for testing the sink. This is initialized in TestMain (see below).
testDB func() *sql.DB
)
const (
user = "postgres"
password = "secret"
port = "5432"
dsn = "postgres://%s:%s@localhost:%s/%s?sslmode=disable"
dbName = "postgres"
chainID = "test-chainID"
viewBlockEvents = "block_events"
viewTxEvents = "tx_events"
)
func TestMain(m *testing.M) {
flag.Parse()
// Set up docker and start a container running PostgreSQL.
pool, err := dockertest.NewPool(os.Getenv("DOCKER_URL"))
if err != nil {
log.Fatalf("Creating docker pool: %v", err)
}
resource, err := pool.RunWithOptions(&dockertest.RunOptions{
Repository: "postgres",
Tag: "13",
Env: []string{
"POSTGRES_USER=" + user,
"POSTGRES_PASSWORD=" + password,
"POSTGRES_DB=" + dbName,
"listen_addresses = '*'",
},
ExposedPorts: []string{port},
}, func(config *docker.HostConfig) {
// set AutoRemove to true so that stopped container goes away by itself
config.AutoRemove = true
config.RestartPolicy = docker.RestartPolicy{
Name: "no",
}
})
if err != nil {
log.Fatalf("Starting docker pool: %v", err)
}
if *doPauseAtExit {
log.Print("Pause at exit is enabled, containers will not expire")
} else {
const expireSeconds = 60
_ = resource.Expire(expireSeconds)
log.Printf("Container expiration set to %d seconds", expireSeconds)
}
// Connect to the database, clear any leftover data, and install the
// indexing schema.
conn := fmt.Sprintf(dsn, user, password, resource.GetPort(port+"/tcp"), dbName)
var db *sql.DB
if err := pool.Retry(func() error {
sink, err := NewEventSink(conn, chainID)
if err != nil {
return err
}
db = sink.DB() // set global for test use
return db.Ping()
}); err != nil {
log.Fatalf("Connecting to database: %v", err)
}
if err := resetDatabase(db); err != nil {
log.Fatalf("Flushing database: %v", err)
}
sm, err := readSchema()
if err != nil {
log.Fatalf("Reading schema: %v", err)
}
migrator := schema.NewMigrator()
if err := migrator.Apply(db, sm); err != nil {
log.Fatalf("Applying schema: %v", err)
}
// Set up the hook for tests to get the shared database handle.
testDB = func() *sql.DB { return db }
// Run the selected test cases.
code := m.Run()
// Clean up and shut down the database container.
if *doPauseAtExit {
log.Print("Testing complete, pausing for inspection. Send SIGINT to resume teardown")
waitForInterrupt()
log.Print("(resuming)")
}
log.Print("Shutting down database")
if err := pool.Purge(resource); err != nil {
log.Printf("WARNING: Purging pool failed: %v", err)
}
if err := db.Close(); err != nil {
log.Printf("WARNING: Closing database failed: %v", err)
}
os.Exit(code)
}
func TestType(t *testing.T) {
psqlSink := &EventSink{store: testDB(), chainID: chainID}
assert.Equal(t, indexer.PSQL, psqlSink.Type())
}
func TestIndexing(t *testing.T) {
t.Run("IndexBlockEvents", func(t *testing.T) {
indexer := &EventSink{store: testDB(), chainID: chainID}
require.NoError(t, indexer.IndexBlockEvents(newTestBlockHeader()))
verifyBlock(t, 1)
verifyBlock(t, 2)
verifyNotImplemented(t, "hasBlock", func() (bool, error) { return indexer.HasBlock(1) })
verifyNotImplemented(t, "hasBlock", func() (bool, error) { return indexer.HasBlock(2) })
verifyNotImplemented(t, "block search", func() (bool, error) {
v, err := indexer.SearchBlockEvents(context.Background(), nil)
return v != nil, err
})
require.NoError(t, verifyTimeStamp(tableBlocks))
// Attempting to reindex the same events should gracefully succeed.
require.NoError(t, indexer.IndexBlockEvents(newTestBlockHeader()))
})
t.Run("IndexTxEvents", func(t *testing.T) {
indexer := &EventSink{store: testDB(), chainID: chainID}
txResult := txResultWithEvents([]abci.Event{
makeIndexedEvent("account.number", "1"),
makeIndexedEvent("account.owner", "Ivan"),
makeIndexedEvent("account.owner", "Yulieta"),
{Type: "", Attributes: []abci.EventAttribute{{Key: "not_allowed", Value: "Vlad", Index: true}}},
})
require.NoError(t, indexer.IndexTxEvents([]*abci.TxResult{txResult}))
txr, err := loadTxResult(types.Tx(txResult.Tx).Hash())
require.NoError(t, err)
assert.Equal(t, txResult, txr)
require.NoError(t, verifyTimeStamp(tableTxResults))
require.NoError(t, verifyTimeStamp(viewTxEvents))
verifyNotImplemented(t, "getTxByHash", func() (bool, error) {
txr, err := indexer.GetTxByHash(types.Tx(txResult.Tx).Hash())
return txr != nil, err
})
verifyNotImplemented(t, "tx search", func() (bool, error) {
txr, err := indexer.SearchTxEvents(context.Background(), nil)
return txr != nil, err
})
// try to insert the duplicate tx events.
err = indexer.IndexTxEvents([]*abci.TxResult{txResult})
require.NoError(t, err)
})
}
func TestStop(t *testing.T) {
indexer := &EventSink{store: testDB()}
require.NoError(t, indexer.Stop())
}
// newTestBlockHeader constructs a fresh copy of a block header containing
// known test values to exercise the indexer.
func newTestBlockHeader() types.EventDataNewBlockHeader {
return types.EventDataNewBlockHeader{
Header: types.Header{Height: 1},
ResultBeginBlock: abci.ResponseBeginBlock{
Events: []abci.Event{
makeIndexedEvent("begin_event.proposer", "FCAA001"),
makeIndexedEvent("thingy.whatzit", "O.O"),
},
},
ResultEndBlock: abci.ResponseEndBlock{
Events: []abci.Event{
makeIndexedEvent("end_event.foo", "100"),
makeIndexedEvent("thingy.whatzit", "-.O"),
},
},
}
}
// readSchema loads the indexing database schema file
func readSchema() ([]*schema.Migration, error) {
const filename = "schema.sql"
contents, err := ioutil.ReadFile(filename)
if err != nil {
return nil, fmt.Errorf("failed to read sql file from '%s': %w", filename, err)
}
return []*schema.Migration{{
ID: time.Now().Local().String() + " db schema",
Script: string(contents),
}}, nil
}
// resetDB drops all the data from the test database.
func resetDatabase(db *sql.DB) error {
_, err := db.Exec(`DROP TABLE IF EXISTS blocks,tx_results,events,attributes CASCADE;`)
if err != nil {
return fmt.Errorf("dropping tables: %v", err)
}
_, err = db.Exec(`DROP VIEW IF EXISTS event_attributes,block_events,tx_events CASCADE;`)
if err != nil {
return fmt.Errorf("dropping views: %v", err)
}
return nil
}
// txResultWithEvents constructs a fresh transaction result with fixed values
// for testing, that includes the specified events.
func txResultWithEvents(events []abci.Event) *abci.TxResult {
return &abci.TxResult{
Height: 1,
Index: 0,
Tx: types.Tx("HELLO WORLD"),
Result: abci.ResponseDeliverTx{
Data: []byte{0},
Code: abci.CodeTypeOK,
Log: "",
Events: events,
},
}
}
func loadTxResult(hash []byte) (*abci.TxResult, error) {
hashString := fmt.Sprintf("%X", hash)
var resultData []byte
if err := testDB().QueryRow(`
SELECT tx_result FROM `+tableTxResults+` WHERE tx_hash = $1;
`, hashString).Scan(&resultData); err != nil {
return nil, fmt.Errorf("lookup transaction for hash %q failed: %v", hashString, err)
}
txr := new(abci.TxResult)
if err := proto.Unmarshal(resultData, txr); err != nil {
return nil, fmt.Errorf("unmarshaling txr: %v", err)
}
return txr, nil
}
func verifyTimeStamp(tableName string) error {
return testDB().QueryRow(fmt.Sprintf(`
SELECT DISTINCT %[1]s.created_at
FROM %[1]s
WHERE %[1]s.created_at >= $1;
`, tableName), time.Now().Add(-2*time.Second)).Err()
}
func verifyBlock(t *testing.T, height int64) {
// Check that the blocks table contains an entry for this height.
if err := testDB().QueryRow(`
SELECT height FROM `+tableBlocks+` WHERE height = $1;
`, height).Err(); err == sql.ErrNoRows {
t.Errorf("No block found for height=%d", height)
} else if err != nil {
t.Fatalf("Database query failed: %v", err)
}
// Verify the presence of begin_block and end_block events.
if err := testDB().QueryRow(`
SELECT type, height, chain_id FROM `+viewBlockEvents+`
WHERE height = $1 AND type = $2 AND chain_id = $3;
`, height, types.EventTypeBeginBlock, chainID).Err(); err == sql.ErrNoRows {
t.Errorf("No %q event found for height=%d", types.EventTypeBeginBlock, height)
} else if err != nil {
t.Fatalf("Database query failed: %v", err)
}
if err := testDB().QueryRow(`
SELECT type, height, chain_id FROM `+viewBlockEvents+`
WHERE height = $1 AND type = $2 AND chain_id = $3;
`, height, types.EventTypeEndBlock, chainID).Err(); err == sql.ErrNoRows {
t.Errorf("No %q event found for height=%d", types.EventTypeEndBlock, height)
} else if err != nil {
t.Fatalf("Database query failed: %v", err)
}
}
// verifyNotImplemented calls f and verifies that it returns both a
// false-valued flag and a non-nil error whose string matching the expected
// "not supported" message with label prefixed.
func verifyNotImplemented(t *testing.T, label string, f func() (bool, error)) {
t.Helper()
t.Logf("Verifying that %q reports it is not implemented", label)
want := label + " is not supported via the postgres event sink"
ok, err := f()
assert.False(t, ok)
require.NotNil(t, err)
assert.Equal(t, want, err.Error())
}
// waitForInterrupt blocks until a SIGINT is received by the process.
func waitForInterrupt() {
ch := make(chan os.Signal, 1)
signal.Notify(ch, os.Interrupt)
<-ch
}