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middleware.go
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middleware.go
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package middleware
import (
"context"
"time"
"cloud.google.com/go/bigquery"
"github.com/rudderlabs/rudder-server/warehouse/logfield"
)
type Opt func(*Client)
type loggerMW interface {
Infow(msg string, keysAndValues ...interface{})
}
type Client struct {
*bigquery.Client
since func(time.Time) time.Duration
logger loggerMW
keysAndValues []any
slowQueryThreshold time.Duration
}
func WithLogger(logger loggerMW) Opt {
return func(s *Client) {
s.logger = logger
}
}
func WithKeyAndValues(keyAndValues ...any) Opt {
return func(s *Client) {
s.keysAndValues = keyAndValues
}
}
func WithSlowQueryThreshold(slowQueryThreshold time.Duration) Opt {
return func(s *Client) {
s.slowQueryThreshold = slowQueryThreshold
}
}
func WithSince(since func(time.Time) time.Duration) Opt {
return func(s *Client) {
s.since = since
}
}
func New(client *bigquery.Client, opts ...Opt) *Client {
s := &Client{
Client: client,
since: time.Since,
slowQueryThreshold: 300 * time.Second,
}
for _, opt := range opts {
opt(s)
}
return s
}
func (client *Client) Run(ctx context.Context, query *bigquery.Query) (*bigquery.Job, error) {
startedAt := time.Now()
job, err := query.Run(ctx)
client.logQuery(query, client.since(startedAt))
return job, err
}
func (client *Client) Read(ctx context.Context, query *bigquery.Query) (it *bigquery.RowIterator, err error) {
startedAt := time.Now()
it, err = query.Read(ctx)
client.logQuery(query, client.since(startedAt))
return it, err
}
func (client *Client) logQuery(query *bigquery.Query, elapsed time.Duration) {
if elapsed < client.slowQueryThreshold {
return
}
queryStatement := query.QueryConfig.Q
keysAndValues := []any{
logfield.Query, queryStatement,
logfield.QueryExecutionTime, elapsed,
}
keysAndValues = append(keysAndValues, client.keysAndValues...)
client.logger.Infow("executing query", keysAndValues...)
}