mirror of
https://github.com/matrix-org/dendrite
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f7cfa75886
* Limit database connections (#564) - Add new options to the config file database: max_open_conns: 100 max_idle_conns: 2 conn_max_lifetime: -1 - Implement connection parameter setup on the *DB (database/sql) in internal/sqlutil/trace.go:Open() - Propagate the values in the form of DbProperties interface via all the Open() and NewDatabase() functions Signed-off-by: Tomas Jirka <tomas.jirka@email.cz> * Fix wasm builds * Remove file accidentally added from working tree Co-authored-by: Tomas Jirka <tomas.jirka@email.cz>
106 lines
3.3 KiB
Go
106 lines
3.3 KiB
Go
// Copyright 2020 The Matrix.org Foundation C.I.C.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package sqlutil
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import (
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"context"
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"database/sql"
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"database/sql/driver"
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"fmt"
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"io"
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"os"
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"regexp"
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"strings"
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"time"
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"github.com/matrix-org/dendrite/common"
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"github.com/ngrok/sqlmw"
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"github.com/sirupsen/logrus"
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)
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var tracingEnabled = os.Getenv("DENDRITE_TRACE_SQL") == "1"
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type traceInterceptor struct {
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sqlmw.NullInterceptor
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}
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func (in *traceInterceptor) StmtQueryContext(ctx context.Context, stmt driver.StmtQueryContext, query string, args []driver.NamedValue) (driver.Rows, error) {
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startedAt := time.Now()
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rows, err := stmt.QueryContext(ctx, args)
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logrus.WithField("duration", time.Since(startedAt)).WithField(logrus.ErrorKey, err).Debug("executed sql query ", query, " args: ", args)
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return rows, err
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}
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func (in *traceInterceptor) StmtExecContext(ctx context.Context, stmt driver.StmtExecContext, query string, args []driver.NamedValue) (driver.Result, error) {
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startedAt := time.Now()
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result, err := stmt.ExecContext(ctx, args)
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logrus.WithField("duration", time.Since(startedAt)).WithField(logrus.ErrorKey, err).Debug("executed sql query ", query, " args: ", args)
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return result, err
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}
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func (in *traceInterceptor) RowsNext(c context.Context, rows driver.Rows, dest []driver.Value) error {
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err := rows.Next(dest)
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if err == io.EOF {
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// For all cases, we call Next() n+1 times, the first to populate the initial dest, then eventually
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// it will io.EOF. If we log on each Next() call we log the last element twice, so don't.
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return err
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}
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cols := rows.Columns()
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logrus.Debug(strings.Join(cols, " | "))
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b := strings.Builder{}
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for i, val := range dest {
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b.WriteString(fmt.Sprintf("%v", val))
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if i+1 <= len(dest)-1 {
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b.WriteString(" | ")
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}
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}
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logrus.Debug(b.String())
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return err
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}
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// Open opens a database specified by its database driver name and a driver-specific data source name,
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// usually consisting of at least a database name and connection information. Includes tracing driver
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// if DENDRITE_TRACE_SQL=1
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func Open(driverName, dsn string, dbProperties common.DbProperties) (*sql.DB, error) {
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if tracingEnabled {
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// install the wrapped driver
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driverName += "-trace"
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}
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db, err := sql.Open(driverName, dsn)
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if err != nil {
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return nil, err
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}
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if driverName != common.SQLiteDriverName() && dbProperties != nil {
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logrus.WithFields(logrus.Fields{
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"MaxOpenConns": dbProperties.MaxOpenConns(),
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"MaxIdleConns": dbProperties.MaxIdleConns(),
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"ConnMaxLifetime": dbProperties.ConnMaxLifetime(),
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"dataSourceName": regexp.MustCompile(`://[^@]*@`).ReplaceAllLiteralString(dsn, "://"),
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}).Debug("Setting DB connection limits")
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db.SetMaxOpenConns(dbProperties.MaxOpenConns())
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db.SetMaxIdleConns(dbProperties.MaxIdleConns())
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db.SetConnMaxLifetime(dbProperties.ConnMaxLifetime())
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}
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return db, nil
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}
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func init() {
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registerDrivers()
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}
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