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wire.go
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wire.go
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// Copyright 2022 Namespace Labs Inc; All rights reserved.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
package incluster
import (
"context"
"database/sql"
"encoding/json"
"errors"
"flag"
"fmt"
"namespacelabs.dev/foundation/schema"
"namespacelabs.dev/foundation/std/go/core"
_ "github.com/go-sql-driver/mysql"
)
var (
mariadbEndpoint = flag.String("mariadb_endpoint", "", "Endpoint configuration.")
)
func getEndpoint() (*schema.Endpoint, error) {
if *mariadbEndpoint == "" {
return nil, errors.New("startup configuration missing, --mariadb_endpoint not specified")
}
var endpoint schema.Endpoint
if err := json.Unmarshal([]byte(*mariadbEndpoint), &endpoint); err != nil {
return nil, fmt.Errorf("failed to parse mariadb endpoint configuration: %w", err)
}
return &endpoint, nil
}
func ProvideDatabase(ctx context.Context, db *Database, deps ExtensionDeps) (*sql.DB, error) {
endpoint, err := getEndpoint()
if err != nil {
return nil, err
}
res, err := sql.Open("mysql", fmt.Sprintf("root:%s@tcp(%s:%d)/%s", deps.Creds.Password, endpoint.AllocatedName, endpoint.Port.ContainerPort, db.Name))
if err != nil {
panic(err)
}
// Asynchronously wait until a database connection is ready.
deps.ReadinessCheck.RegisterFunc(fmt.Sprintf("%s/%s", core.InstantiationPathFromContext(ctx), db.Name), func(ctx context.Context) error {
return res.PingContext(ctx)
})
return res, nil
}