79 lines
1.9 KiB
Go
79 lines
1.9 KiB
Go
package mongo
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import (
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"context"
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"fmt"
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"log"
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"net"
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"net/url"
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"time"
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"go.mongodb.org/mongo-driver/event"
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"go.mongodb.org/mongo-driver/mongo"
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"go.mongodb.org/mongo-driver/mongo/options"
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)
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type ConnectDeps struct {
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Configuration *Configuration
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Timeout time.Duration
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}
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func Connect(ctx context.Context, deps *ConnectDeps) (*mongo.Database, error) {
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if deps == nil {
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return nil, ErrEmptyArgs
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}
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mongoURI := &url.URL{
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Scheme: "mongodb",
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Host: net.JoinHostPort(deps.Configuration.Host, deps.Configuration.Port),
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}
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cmdMonitor := &event.CommandMonitor{
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Started: func(_ context.Context, evt *event.CommandStartedEvent) {
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log.Println(evt.Command)
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},
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Succeeded: func(_ context.Context, evt *event.CommandSucceededEvent) {
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log.Println(evt.Reply)
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},
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Failed: func(_ context.Context, evt *event.CommandFailedEvent) {
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log.Println(evt.Failure)
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},
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}
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connectionOptions := options.Client().
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ApplyURI(mongoURI.String()).
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SetAuth(options.Credential{
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AuthMechanism: "SCRAM-SHA-1",
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AuthSource: deps.Configuration.Auth,
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Username: deps.Configuration.User,
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Password: deps.Configuration.Password,
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}).
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SetMonitor(cmdMonitor)
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ticker := time.NewTicker(1 * time.Second)
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timeoutExceeded := time.After(deps.Timeout)
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defer ticker.Stop()
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for {
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select {
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case <-ticker.C:
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connection, err := mongo.Connect(ctx, connectionOptions)
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if err == nil {
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err = connection.Ping(ctx, nil)
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if err == nil {
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return connection.Database(deps.Configuration.DatabaseName), nil
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}
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log.Printf("failed to ping the database <%s>: %s", mongoURI.String(), err.Error())
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}
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log.Printf("failed to connect to db <%s>: %s", mongoURI.String(), err.Error())
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case <-timeoutExceeded:
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return nil, fmt.Errorf("db connection <%s> failed after %d timeout", mongoURI.String(), deps.Timeout)
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default:
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time.Sleep(1 * time.Second)
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}
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}
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}
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